Some standard content:
ICS55.180.20
National Standard of the People's Republic of China
GB/T10819—2005
Replaces GB/T10819--1989
Wooden skid
Published on 2005-05-25
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
Standardization Administration of the People's Republic of China
Implemented on 2005-11-01
GB/T10819—2005
This standard amends and adopts Japanese Industrial Standard JIS Z1405-84 "Wooden skid (for export packaging)". GB10819--1989 "Wooden skid for transport packaging" is revised. Compared with JIS Z1405 standard, the main differences are as follows: some arrangement orders in the standard have been modified according to Chinese habits; - the scope of application has been changed from 500kg to 60,000kg to 500kg to 40,000kg; - the concept of forklift handling has been added;
- the requirements for wood pest prevention have been added; Compared with GB10819-1989, the main changes of this standard are as follows: the concept of forklift handling has been added;
the requirements for wood pest prevention have been added. From the date of implementation, this standard will replace GB10819-1989. This standard is proposed by China Machinery Industry Federation. This standard is under the jurisdiction of the National Technical Committee for Packaging Standardization. The main drafting units of this standard are: China Machinery Productivity Promotion Center, Beijing Aerospace Wanyuan Electric Company, Beijing Fangda Huayuan Packaging Products Co., Ltd.
The main drafters of this standard are: Huang Xue, Zhou Shu, Zhang Xiaojian, Mu Lin, Si Weixin. 1 Scope
Wooden chassis
GB/T10819—2005
This standard specifies the structural type, component size, test method, etc. of wooden chassis for transport packaging with an internal mass of 500kg to 40,000kg (hereinafter referred to as chassis).
This standard applies to the design, production and manufacturing of wooden chassis. 2 Normative references
The clauses in the following documents become the clauses of this standard through reference in this standard. For all dated referenced documents, all subsequent amendments (excluding errata) or revisions are not applicable to this standard. However, the parties to the agreement based on this standard are encouraged to study whether the latest versions of these documents can be used. For all undated referenced documents, the latest versions shall apply to this standard. Hexagonal nut Grade C
GB/T41
GB/T95
Flat washer Grade C
GB/T96.2Large washer Grade C
GB/T953
GB/T5398
Equal length stud Grade C
Test method for large transport packages
Hexagonal bolt Grade C
GB/T5780
GB/T13384||tt| |GB/T18927
GJB2711
YB/T025
General technical conditions for packaging of electromechanical products
Metal accessories of packaging containers
Test methods for military transport packages
Steel straps for packaging
YB/T5002
Round steel nails for general use
3 Structural types
The structural types of the chassis are classified according to the loading and unloading methods during storage and transportation as shown in Table 1. Table 1 Chassis type
Loading and unloading methods
Lifting or rolling bar, forklift loading and unloading, handling by chassis Direct lifting of the contents itself, only loading and unloading and handling by roller bar by chassis Scope of application
As a general chassis, it is applicable to all kinds of items Mainly applicable to items that can be directly lifted The basic structure of type A chassis is shown in Figure 1. The B-type chassis has the same structure as the A-type chassis except that the auxiliary slide is not installed and the two ends of the slide need to be chamfered.
Auxiliary slide
GB/T10819--2005
4 Materials
4.1 Wood
4.1.1 Allowable strength of wood
The allowable strength of wood shall be as specified in Table 2
Bending strength, f
Figure 1 (continued)
Auxiliary slide
Table 2 Allowable strength of wood
(Compressive strength along the grain, f
Unit: MPa
(Tensile strength along the grain, f
The design of each chassis component may also change the size of its component according to the proportional relationship between the allowable strength of the wood actually used and the allowable strength in Table 2 (the allowable strength is equal to the test strength divided by the safety factor, the safety factor for bending strength is 7, the compressive strength is 100%, the safety factor for bending strength is 100%, the safety factor for ... The safety factor of strength is 5.5).
4.1.2 Types of wood
The main load-bearing components of the chassis, such as the slides, end woods, and sleepers, are mainly larch, pine, cold pine, cloud pine, mechanical wood, elm, etc. Wood species with the same or greater strength can also be used. 4.1.3 Moisture content of wood
The moisture content of each component of the chassis should be below 25%. 4.1.4 Defects of wood
The allowable defect limit of wood shall be in accordance with the provisions of GB/T13384. 4.1.5 Dimensional tolerance of wood
The dimensional tolerance of the wood used for the chassis shall be in accordance with the provisions of Table 3. Table 3 Dimensional tolerance of wood
Dimension range
200~1000
4.1.6 Pest control of wood
When necessary, The wood used should be treated with pesticide fumigation, high temperature and high pressure to eliminate pests. 4.2 Metal materials
4.2.1 Metal components
Unit: mm
The components of the chassis can also be made of metal components, and the allowable load of the components should be greater than or equal to the allowable load of the wood. The assembly between metal components and wooden components should be bolted, and the assembly between metal components can be bolted or welded. 2
4.2.2 Steel nails
Use the steel nails specified in YB/T5002.
4.2.3 Bolts, nuts and washers
GB/T10819—2005
Use the bolts specified in GB/T5780 and GB/T953 and the nuts specified in GB/T41 and GB/ T95 and washers specified in GB/T96.2. Other types of bolts may also be used as needed. 4.2.4 Steel belt
Use ordinary precision steel belt specified in YB/T025. The minimum width of the steel belt should be above 19mm and the minimum thickness should be above 0.45mm.
4.2.5 Metal accessories
Metal accessories specified in GB/T18927 should also be used as needed. Such as lifting guardrails, various fasteners and reinforcing components. All items with contents above 5t should be equipped with lifting guardrails. 5 Components and dimensions
5.1 Slide
5.1.1 Slide dimensions
The dimensions of the slide are determined according to the mass of the contents, the center spacing of the sleepers and the placement of the contents on the chassis. 5.1.1.1 When using A-type chassis, determine the cross-sectional dimensions of the slide rails according to the following two situations. a) As shown in Figure 2, when the two outermost sleepers that fix the contents to the chassis are both beyond the lifting point, the cross-sectional dimensions of each slide rail shall be selected according to Table 4.
Zhao Lifting Rope Case
#Figure
Spoke Rib Slide Rail
[The center distance between the two sleepers at the lifting point. Figure 2
Table 4 Minimum width of the slide
Contents
Mass/kg
Wood thickness
Unit: mm
Centre distance between two sleepers at the lifting point
GB/T10819—2005
Contents
Mass/kg
Slide thickness
Table 4 (continued)
Centre distance between two sleepers at the lifting point
Unit: mm
Contents
Mass/kg
Slide thickness
Table 4 (continued)
Centre distance between two sleepers at the lifting point Interval
GB/T10819-2005
Unit: mm
GB/T10819—2005
Contents
Mass/kg
Thickness of slide
Table 4 (continued)
Center interval between two sleepers at the lifting point
Unit: mm
As shown in Figure 3, when the outermost fixing point of the contents and the chassis is on the inner side of the two lifting points, select the cross-section b)
size of the slide according to Table 4, but at this time, the "center interval between two sleepers at the lifting point" in Table 4 should be "the distance between the lifting point and the outermost fixing point of the contents". This value should generally not be greater than 600mm. Lifting rope
[The distance between a lifting point and the outermost fixing point of the contents. 6
GB/T10819-2005
5.1.1.2 When using B-type chassis, the cross-sectional dimensions of the slide shall be selected according to Table 4, but at this time, the "center distance between two sleepers at the lifting point" in Table 4 should be the "maximum center distance between any two adjacent sleepers", and the width of the slide selected from Table 4 is half of the sum of the widths of all slides used.
5.1.1.3 The slide shall preferably have a cross-sectional dimension with equal width and thickness or width greater than thickness. 5.1.2 Determination of the number of slides
The center distance between two adjacent slides is generally not greater than 1200mm. When a forklift is required to transport the slides horizontally, the center distance between the slides shall not exceed 1000mm (when the mass of the contents is less than 1500kg, it shall not exceed 800mm). If it exceeds the specified value, slides with the same cross-sectional dimensions or the same thickness shall be added in between.
5.1.3 Butt joint of slides
Slides should be made of a whole piece of wood as much as possible. If the length is not enough, they can be butt jointed in the manner shown in Figure 4. The butt joint position cannot be near the center of the length or the lifting position. The butt joint positions of two adjacent slides should be staggered. When the slide width is less than or equal to 90mm, use M10 bolts to connect. When it exceeds 90mm, use M12 bolts to connect. Steel nails
b-The width of the slide.
Butt joint of middle slide
Butt joint of slides on both sides
a) Butt joint with wooden board reinforcement, applicable to chassis with contents below 4000 kgb) Butt joint with steel plate reinforcement, applicable to chassis with contents above 4000 kge) Butt joint with parallel board reinforcement, applicable to all kinds of chassisFigure 4
GB/T10819—-2005
5.1.4 Structure of both ends of slide
For B-type chassis, both ends of slide shall be chamfered with 35°～45° at about half of the height from the bottom surface, as shown in Figure 5. Figure 5
5.2 Auxiliary slide
A-type chassis shall be installed with auxiliary slide to adjust the lifting position or the fork hole position of forklift5.2.1 Size of auxiliary slide. The width of auxiliary slide shall be more than 80% of the width of slide. Its thickness shall be selected according to Table 5. The auxiliary slide can be butt jointed along the length direction. When rollers are required for loading and unloading, the two ends of the auxiliary slide should be chamfered with 35°～45°. Table 5 Thickness of auxiliary slide
Mass of content/kg
≤1500
>12500bzxz.net
5.2.2 Installation position of auxiliary slide
Thickness of auxiliary slide/mm
5.2.2.1 When the content is unbalanced, the installation position of the auxiliary slide should ensure that the chassis is in a balanced state during the lifting operation. 5.2.2.2
200mm.
When two sleepers are used and the content is not unbalanced, the two ends of the auxiliary slide are generally about 100mm from the two ends of the slide. When three sleepers are used and the content is not unbalanced, the installation position of the auxiliary slide is shown in Figure 6. The center interval of one or two adjacent sleepers.
5.2.2.4 When more than four sleepers are used and the contents are non-biased weight items, the installation position of the auxiliary slide is shown in Figures 7 and 8. 1 The center distance between two adjacent sleepers.
The center distance between two adjacent sleepers.
GB/T10819—2005
5.2.2.5 For chassis that require forklifts to load and unload, the positions of the two fork holes should be at equal distances from the center of gravity of the contents. The width of the fork holes and the distance between the two fork holes shall be in accordance with the provisions of Figure 9 and Table 6. ab and c in the figure shall be determined according to the dimensions in Table 6. Figure 9
Mass of contents/kg
Installation dimensions of fork holes
Unit: mm
5.2.3 The auxiliary slide is nailed to the bottom of the slide with steel nails. The steel nails are staggered in two rows. The spacing between the steel nails in the same row shall not exceed 300mm. 5.3 End Wood
The end wood is a component that connects the slide rails horizontally and is installed at both ends of the slide rails. 5.3.1 Dimensions of End Wood
When the internal objects are not placed on the end wood, the dimensions of the end wood and the dimensions of the mounting bolts shall be in accordance with the provisions of Table 7. When the internal objects are installed on the end wood, the dimensions of the end wood are the same as those of the sleepers. Table 7 Dimensions of end wood and connecting bolts
Mass of contents/kg
5.3.2 Installation method of end wood
Dimensions of end wood (width×thickness)/
90×45 or 60×60
75×75
100×100
120×120
150×150
Diameter of connecting bolts
When the width of the end wood is less than 150mm, each connecting part is installed on the sliding wood with one bolt, and when the width of the end wood is greater than 150mm, two bolts are used to connect.
5.4 Sleepers
5.4.1 Dimensions of sleepers for A-type chassis
5.4.1.1 When the sleepers are subjected to uniform loads, the cross-sectional dimensions and quantity of the sleepers are determined by Table 8. When more than five sleepers are used, the dimensions are the same as when four sleepers are used. However, even if more than five sleepers are used, if the lifting position is as shown in Figure 10, the dimensions of the sleepers are still the same as when three sleepers are used.
GB/T10819—2005
Lifting rope hanging opening>30cm
5.4.1.2 When the sleepers are subjected to two-point concentrated loads as shown in Figure 11, the following method is used to determine the cross-sectional dimensions of the sleepers. e
, —internal spacing between the concentrated load and the outer slide; —internal spacing between the outermost slide;
Mass of the contents.
When >12, multiply the allowable bending load value in Table 8 by the value of formula (1) as the allowable bending load value in this case. 41-+)
（1）
When 1=1, multiply the allowable bending load value in Table 8 by the value of formula (2) as the allowable bending load value in this case. However, when the values of formula (1) and formula (2) are greater than 2.5, they must still be calculated based on 2.5. 421
5.4.1.3 When the contents are cylindrical as shown in Figure 12, assume that the center point of the contact points a and b between the items and the sleepers and the block is c, then take the distance between point c and the inner side of the outer slide as 11, and then calculate the allowable load value according to Table 8 and formula 1) or formula (2). The contact point between the object and the sleeper and the block and its center point; a, b, c
h——the distance between the point and the inner side of the outer slide; the inner compartment of the outermost slide.
5.4.2 Sleeper size for B-type chassis
The sleeper size for B-type chassis is determined in the same way as for A-type, but when more than three slides are used, the value in Table 8 can be doubled.2 When using B-type chassis, the cross-sectional dimensions of the slide shall be selected according to Table 4, but the "center distance between two sleepers at the lifting point" in Table 4 should be the "maximum center distance between any two adjacent sleepers", and the width of the slide selected from Table 4 should be half of the sum of the widths of all slides used.
5.1.1.3 The slide shall preferably have a cross-sectional dimension with equal width and thickness or width greater than thickness. 5.1.2 Determination of the number of slides
The center distance between two adjacent slides is generally not greater than 1200mm. When forklifts are required to transport the slides horizontally, the center distance between the slides should not exceed 1000mm (when the mass of the contents is less than 1500kg, it should not exceed 800mm). If it exceeds the specified value, slides with the same cross-sectional dimensions or the same thickness shall be added in the middle.
5.1.3 Butt joint of slides
The slide shall be made of a whole piece as much as possible. If the length is not enough, it can be butt jointed in the manner shown in Figure 4. The butt joint position cannot be near the center of the length or the lifting position. The butt joint positions of two adjacent slides should be staggered. When the slide width is less than or equal to 90mm, use M10 bolts to connect, and when it exceeds 90mm, use M12 bolts to connect. Steel nails
b-The width of the slide.
Butt joint of the middle slide
Butt joint of the two side slides
a) Butt joint with wooden board reinforcement, applicable to chassis with internal contents less than 4000kgb) Butt joint with steel plate reinforcement, applicable to chassis with internal contents more than 4000kge) Butt joint with parallel board reinforcement, applicable to all types of chassis Figure 4
GB/T10819--2005
5.1.4 Structure of both ends of the slide
For type B chassis, the two ends of the slide should be made into a 35°~45° chamfer at about half the height from the bottom surface, as shown in Figure 5. Figure 5
5.2 Auxiliary Slide
A-type chassis needs to be installed with auxiliary slides to adjust the lifting position or the fork hole position of the forklift 5.2.1 The size of the auxiliary slide. The width of the auxiliary slide should be more than 80% of the slide width. Its thickness is selected according to Table 5. The auxiliary slide can be butt-jointed along the length direction. When rollers are required for loading and unloading, the two ends of the auxiliary slide should be chamfered with 35° to 45°. Table 5 Thickness of auxiliary slide
Mass of internal contents/kg
≤1500
>12500
5.2.2 Installation position of auxiliary slide
Thickness of auxiliary slide/mm
5.2.2.1 When the internal contents are heavy items, the installation position of the auxiliary slide should ensure that the chassis is in a balanced state during lifting operations. 5.2.2.2
200mm.
When two sleepers are used and the contents are not eccentrically heavy, the two ends of the auxiliary slide are generally about 100 meters away from the two ends of the slide. When three sleepers are used and the contents are not eccentrically heavy, the installation position of the auxiliary slide is shown in Figure 6. One center interval between two adjacent sleepers.
5.2.2.4When four or more sleepers are used and the contents are not eccentrically heavy, the installation position of the auxiliary slide is shown in Figures 7 and 8. 1 One center interval between two adjacent sleepers.
One center interval between two adjacent sleepers.
GB/T10819—2005
5.2.2.5For chassis that need to be loaded and unloaded by forklift, the position of the two fork holes should be at an equal distance from the center of gravity of the contents, and the width of the fork holes and the distance between the two fork holes shall be in accordance with the provisions of Figure 9 and Table 6. The ab and c in the figure shall be determined according to the dimensions in Table 6. Figure 9
Mass of contents/kg
Installation dimensions of fork holes
Unit: mm
5.2.3 The auxiliary slide is nailed to the bottom of the slide with steel nails. The steel nails are staggered in two rows. The interval between the steel nails in the same row is not more than 300mm. 5.3 End wood
The end wood is a component that connects the slide horizontally and is installed at both ends of the slide. 5.3.1 Dimensions of end wood
When the contents are not placed on the end wood, the dimensions of the end wood and the dimensions of the mounting bolts shall be in accordance with the provisions of Table 7. When the contents are installed on the end wood, the dimensions of the end wood are the same as those of the sleepers. Table 7 Dimensions of end wood and connecting bolts
Mass of contents/kg
5.3.2 Installation method of end wood
Dimensions of end wood (width×thickness)/
90×45 or 60×60
75×75
100×100
120×120
150×150
Diameter of connecting bolts
When the width of the end wood is less than 150mm, each connecting part is installed on the sliding wood with one bolt, and when the width of the end wood is greater than 150mm, two bolts are used to connect.
5.4 Sleepers
5.4.1 Dimensions of sleepers for A-type chassis
5.4.1.1 When the sleepers are subjected to uniform loads, the cross-sectional dimensions and quantity of the sleepers are determined by Table 8. When more than five sleepers are used, the dimensions are the same as when four sleepers are used. However, even if more than five sleepers are used, if the lifting position is as shown in Figure 10, the dimensions of the sleepers are still the same as when three sleepers are used.
GB/T10819—2005
Lifting rope hanging opening>30cm
5.4.1.2 When the sleepers are subjected to two-point concentrated loads as shown in Figure 11, the following method is used to determine the cross-sectional dimensions of the sleepers. e
, —internal spacing between the concentrated load and the outer slide; —internal spacing between the outermost slide;
Mass of the contents.
When >12, multiply the allowable bending load value in Table 8 by the value of formula (1) as the allowable bending load value in this case. 41-+)
（1）
When 1=1, multiply the allowable bending load value in Table 8 by the value of formula (2) as the allowable bending load value in this case. However, when the values of formula (1) and formula (2) are greater than 2.5, they must still be calculated based on 2.5. 421
5.4.1.3 When the contents are cylindrical as shown in Figure 12, assume that the center point of the contact points a and b between the items and the sleepers and the block is c, then take the distance between point c and the inner side of the outer slide as 11, and then calculate the allowable load value according to Table 8 and formula 1) or formula (2). The contact point between the object and the sleeper and the block and its center point; a, b, c
h——the distance between the point and the inner side of the outer slide; the inner compartment of the outermost slide.
5.4.2 Sleeper size for B-type chassis
The sleeper size for B-type chassis is determined in the same way as for A-type, but when more than three slides are used, the value in Table 8 can be doubled.2 When using B-type chassis, the cross-sectional dimensions of the slide shall be selected according to Table 4, but the "center distance between two sleepers at the lifting point" in Table 4 should be the "maximum center distance between any two adjacent sleepers", and the width of the slide selected from Table 4 should be half of the sum of the widths of all slides used.
5.1.1.3 The slide shall preferably have a cross-sectional dimension with equal width and thickness or width greater than thickness. 5.1.2 Determination of the number of slides
The center distance between two adjacent slides is generally not greater than 1200mm. When forklifts are required to transport the slides horizontally, the center distance between the slides should not exceed 1000mm (when the mass of the contents is less than 1500kg, it should not exceed 800mm). If it exceeds the specified value, slides with the same cross-sectional dimensions or the same thickness shall be added in the middle.
5.1.3 Butt joint of slides
The slide shall be made of a whole piece as much as possible. If the length is not enough, it can be butt jointed in the manner shown in Figure 4. The butt joint position cannot be near the center of the length or the lifting position. The butt joint positions of two adjacent slides should be staggered. When the slide width is less than or equal to 90mm, use M10 bolts to connect, and when it exceeds 90mm, use M12 bolts to connect. Steel nails
b-The width of the slide.
Butt joint of the middle slide
Butt joint of the two side slides
a) Butt joint with wooden board reinforcement, applicable to chassis with internal contents less than 4000kgb) Butt joint with steel plate reinforcement, applicable to chassis with internal contents more than 4000kge) Butt joint with parallel board reinforcement, applicable to all types of chassis Figure 4
GB/T10819--2005
5.1.4 Structure of both ends of the slide
For type B chassis, the two ends of the slide should be made into a 35°~45° chamfer at about half the height from the bottom surface, as shown in Figure 5. Figure 5
5.2 Auxiliary Slide
A-type chassis needs to be installed with auxiliary slides to adjust the lifting position or the fork hole position of the forklift 5.2.1 The size of the auxiliary slide. The width of the auxiliary slide should be more than 80% of the slide width. Its thickness is selected according to Table 5. The auxiliary slide can be butt-jointed along the length direction. When rollers are required for loading and unloading, the two ends of the auxiliary slide should be chamfered with 35° to 45°. Table 5 Thickness of auxiliary slide
Mass of internal contents/kg
≤1500
>12500
5.2.2 Installation position of auxiliary slide
Thickness of auxiliary slide/mm
5.2.2.1 When the internal contents are heavy items, the installation position of the auxiliary slide should ensure that the chassis is in a balanced state during lifting operations. 5.2.2.2
200mm.
When two sleepers are used and the contents are not eccentrically heavy, the two ends of the auxiliary slide are generally about 100 meters away from the two ends of the slide. When three sleepers are used and the contents are not eccentrically heavy, the installation position of the auxiliary slide is shown in Figure 6. One center interval between two adjacent sleepers.
5.2.2.4When four or more sleepers are used and the contents are not eccentrically heavy, the installation position of the auxiliary slide is shown in Figures 7 and 8. 1 One center interval between two adjacent sleepers.
One center interval between two adjacent sleepers.
GB/T10819—2005
5.2.2.5For chassis that need to be loaded and unloaded by forklift, the position of the two fork holes should be at an equal distance from the center of gravity of the contents, and the width of the fork holes and the distance between the two fork holes shall be in accordance with the provisions of Figure 9 and Table 6. The ab and c in the figure shall be determined according to the dimensions in Table 6. Figure 9
Mass of contents/kg
Installation dimensions of fork holes
Unit: mm
5.2.3 The auxiliary slide is nailed to the bottom of the slide with steel nails. The steel nails are staggered in two rows. The interval between the steel nails in the same row is not more than 300mm. 5.3 End wood
The end wood is a component that connects the slide horizontally and is installed at both ends of the slide. 5.3.1 Dimensions of end wood
When the contents are not placed on the end wood, the dimensions of the end wood and the dimensions of the mounting bolts shall be in accordance with the provisions of Table 7. When the contents are installed on the end wood, the dimensions of the end wood are the same as those of the sleepers. Table 7 Dimensions of end wood and connecting bolts
Mass of contents/kg
5.3.2 Installation method of end wood
Dimensions of end wood (width×thickness)/
90×45 or 60×60
75×75
100×100
120×120
150×150
Diameter of connecting bolts
When the width of the end wood is less than 150mm, each connecting part is installed on the sliding wood with one bolt, and when the width of the end wood is greater than 150mm, two bolts are used to connect.
5.4 Sleepers
5.4.1 Dimensions of sleepers for A-type chassis
5.4.1.1 When the sleepers are subjected to uniform loads, the cross-sectional dimensions and quantity of the sleepers are determined by Table 8. When more than five sleepers are used, the dimensions are the same as when four sleepers are used. However, even if more than five sleepers are used, if the lifting position is as shown in Figure 10, the dimensions of the sleepers are still the same as when three sleepers are used.
GB/T10819—2005
Lifting rope hanging opening>30cm
5.4.1.2 When the sleepers are subjected to two-point concentrated loads as shown in Figure 11, the following method is used to determine the cross-sectional dimensions of the sleepers. e
, —internal spacing between the concentrated load and the outer slide; —internal spacing between the outermost slide;
Mass of the contents.
When >12, multiply the allowable bending load value in Table 8 by the value of formula (1) as the allowable bending load value in this case. 41-+)
（1）
When 1=1, multiply the allowable bending load value in Table 8 by the value of formula (2) as the allowable bending load value in this case. However, when the values of formula (1) and formula (2) are greater than 2.5, they must still be calculated based on 2.5. 421
5.4.1.3 When the contents are cylindrical as shown in Figure 12, assume that the center point of the contact points a and b between the items and the sleepers and the block is c, then take the distance between point c and the inner side of the outer slide as 11, and then calculate the allowable load value according to Table 8 and formula 1) or formula (2). The contact point between the object and the sleeper and the block and its center point; a, b, c
h——the distance between the point and the inner side of the outer slide; the inner compartment of the outermost slide.
5.4.2 Sleeper size for B-type chassis
The sleeper size for B-type chassis is determined in the same way as for A-type, but when more than three slides are used, the value in Table 8 can be doubled.1 When the contents are unbalanced, the installation position of the auxiliary slide should ensure that the chassis is in a balanced state during the lifting operation. 5.2.2.2
200mm.
When two sleepers are used and the contents are not unbalanced, the two ends of the auxiliary slide are generally about 100mm away from the two ends of the slide. When three sleepers are used and the contents are not unbalanced, the installation position of the auxiliary slide is shown in Figure 6. The center interval between two adjacent sleepers.
5.2.2.4 When more than four sleepers are used and the contents are not unbalanced, the installation position of the auxiliary slide is shown in Figures 7 and 8. 1 The center interval between two adjacent sleepers.
The center interval between two adjacent sleepers.
GB/T10819—2005
5.2.2.5For chassis that need to be loaded and unloaded by forklift, the distance between the two fork holes and the center of gravity of the contents shall be equal. The width of the fork holes and the distance between the two fork holes shall be in accordance with the provisions of Figure 9 and Table 6. ab and c in the figure shall be determined according to the dimensions in Table 6. Figure 9
Mass of contents/kg
Installation dimensions of fork holes
Unit: mm
5.2.3 The auxiliary slide is nailed to the bottom of the slide with steel nails. The steel nails are arranged in two rows and staggered. The spacing between the steel nails in the same row is not more than 300mm. 5.3 End wood
The end wood is a component that connects the slide horizontally and is installed at both ends of the slide. 5.3.1 Dimensions of end wood
When the contents are not placed on the end wood, the dimensions of the end wood and the dimensions of the mounting bolts shall be in accordance with the provisions of Table 7. When the contents are installed on the end wood, the size of the end wood is the same as that of the sleeper. Table 7 Dimensions of end wood and connecting bolts
Mass of contents/kg
5.3.2 Installation method of end wood
Dimensions of end wood (width×thickness)/
90×45 or 60×60
75×75
100×100
120×120
150×150
Diameter of connecting bolt
When the width of the end wood is less than 150mm, each connection part is installed on the slide with one bolt, and when the width of the end wood is greater than 150mm, two bolts are used for connection.
5.4 Sleepers
5.4.1 Dimensions of sleepers for A-type chassis
5.4.1.1 When the sleepers are subjected to uniform loads, the cross-sectional dimensions and quantity of the sleepers are determined by Table 8. When more than five sleepers are used, the dimensions are the same as when four sleepers are used. However, even if more than five sleepers are used, if the lifting position is as shown in Figure 10, the dimensions of the sleepers are still the same as when three sleepers are used.
GB/T10819—2005
Lifting rope hanging opening>30cm
5.4.1.2 When the sleepers are subjected to two-point concentrated loads as shown in Figure 11, the following method is used to determine the cross-sectional dimensions of the sleepers. e
, —internal spacing between the concentrated load and the outer slide; —internal spacing between the outermost slide;
Mass of the contents.
When >12, multiply the allowable bending load value in Table 8 by the value of formula (1) as the allowable bending load value in this case. 41-+)
（1）
When 1=1, multiply the allowable bending load value in Table 8 by the value of formula (2) as the allowable bending load value in this case. However, when the values of formula (1) and formula (2) are greater than 2.5, they must still be calculated based on 2.5. 421
5.4.1.3 When the contents are cylindrical as shown in Figure 12, assume that the center point of the contact points a and b between the items and the sleepers and the block is c, then take the distance between point c and the inner side of the outer slide as 11, and then calculate the allowable load value according to Table 8 and formula 1) or formula (2). The contact point between the object and the sleeper and the block and its center point; a, b, c
h——the distance between the point and the inner side of the outer slide; the inner compartment of the outermost slide.
5.4.2 Sleeper size for B-type chassis
The sleeper size for B-type chassis is determined in the same way as for A-type, but when more than three slides are used, the value in Table 8 can be doubled.1 When the contents are unbalanced, the installation position of the auxiliary slide should ensure that the chassis is in a balanced state during the lifting operation. 5.2.2.2
200mm.
When two sleepers are used and the contents are not unbalanced, the two ends of the auxiliary slide are generally about 100mm away from the two ends of the slide. When three sleepers are used and the contents are not unbalanced, the installation position of the auxiliary slide is shown in Figure 6. The center interval between two adjacent sleepers.
5.2.2.4 When more than four sleepers are used and the contents are not unbalanced, the installation position of the auxiliary slide is shown in Figures 7 and 8. 1 The center interval between two adjacent sleepers.
The center interval between two adjacent sleepers.
GB/T10819—2005
5.2.2.5For chassis that need to be loaded and unloaded by forklift, the distance between the two fork holes and the center of gravity of the contents shall be equal. The width of the fork holes and the distance between the two fork holes shall be in accordance with the provisions of Figure 9 and Table 6. ab and c in the figure shall be determined according to the dimensions in Table 6. Figure 9
Mass of contents/kg
Installation dimensions of fork holes
Unit: mm
5.2.3 The auxiliary slide is nailed to the bottom of the slide with steel nails. The steel nails are arranged in two rows and staggered. The spacing between the steel nails in the same row is not more than 300mm. 5.3 End wood
The end wood is a component that connects the slide horizontally and is installed at both ends of the slide. 5.3.1 Dimensions of end wood
When the contents are not placed on the end wood, the dimensions of the end wood and the dimensions of the mounting bolts shall be in accordance with the provisions of Table 7. When the contents are installed on the end wood, the size of the end wood is the same as that of the sleeper. Table 7 Dimensions of end wood and connecting bolts
Mass of contents/kg
5.3.2 Installation method of end wood
Dimensions of end wood (width×thickness)/
90×45 or 60×60
75×75
100×100
120×120
150×150
Diameter of connecting bolt
When the width of the end wood is less than 150mm, each connection part is installed on the slide with one bolt, and when the width of the end wood is greater than 150mm, two bolts are used for connection.
5.4 Sleepers
5.4.1 Dimensions of sleepers for A-type chassis
5.4.1.1 When the sleepers are subjected to uniform loads, the cross-sectional dimensions and quantity of the sleepers are determined by Table 8. When more than five sleepers are used, the dimensions are the same as when four sleepers are used. However, even if more than five sleepers are used, if the lifting position is as shown in Figure 10, the dimensions of the sleepers are still the same as when three sleepers are used.
GB/T10819—2005
Lifting rope hanging opening>30cm
5.4.1.2 When the sleepers are subjected to two-point concentrated loads as shown in Figure 11, the following method is used to determine the cross-sectional dimensions of the sleepers. e
, —internal spacing between the concentrated load and the outer slide; —internal spacing between the outermost slide;
Mass of the contents.
When >12, multiply the allowable bending load value in Table 8 by the value of formula (1) as the allowable bending load value in this case. 41-+)
（1）
When 1=1, multiply the allowable bending load value in Table 8 by the value of formula (2) as the allowable bending load value in this case. However, when the values of formula (1) and formula (2) are greater than 2.5, they must still be calculated based on 2.5. 421
5.4.1.3 When the contents are cylindrical as shown in Figure 12, assume that the center point of the contact points a and b between the items and the sleepers and the block is c, then take the distance between point c and the inner side of the outer slide as 11, and then calculate the allowable load value according to Table 8 and formula 1) or formula (2). The contact point between the object and the sleeper and the block and its center point; a, b, c
h——the distance between the point and the inner side of the outer slide; the inner compartment of the outermost slide.
5.4.2 Sleeper size for B-type chassis
The sleeper size for B-type chassis is determined in the same way as for A-type, but when more than three slides are used, the value in Table 8 can be doubled.
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