This standard specifies the definition, classification, technical requirements, test methods, inspection rules and marking, packaging, transportation, storage, etc. of punching and grabbing drilling machines. This standard is applicable to punching and grabbing drilling machines with automatic loading and unloading. JG/T 5110-1999 Punching and grabbing drilling machines JG/T5110-1999 Standard download decompression password: www.bzxz.net

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ICS91.220
People's Republic of China Construction Industry Standard JG/T5110—1999
Impact-grabbering machine
1999-01-26 Issued
People's Republic of China Ministry of Construction Issued
1999-08-01 Implementation
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JG/T5110—1999
Impact-grabbering machine has a simple structure and is easy to operate. It is suitable for construction in hand-sticky, gravel soil and loose and pebble strata mixed with boulders. The formulation of this standard is conducive to the production, inspection and quality assurance of impact-grabbering machine. Promote the further development of products towards serialization and standardization.
Appendix A of this standard is the appendix of the standard.
This standard is proposed by the Standard and Quota Research Institute of the Ministry of Construction. This standard is under the jurisdiction of the Beijing Construction Machinery Comprehensive Research Institute, the unit responsible for the standard technology of mechanical equipment and vehicles of the Ministry of Construction. The drafting units of this standard are: Beijing Construction Machinery Comprehensive Research Institute of the Ministry of Construction, Zhejiang Yinlun Machinery Group (Tiantai Machinery Factory). The main drafters of this standard are: Wang Zhaohong, Wang Xinli, Wang Zhongke, Hu Yongming. This standard is entrusted to the Beijing Construction Machinery Comprehensive Research Institute for interpretation. XXS
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Construction Industry Standard of the People's Republic of China Impact-grab boring machine
Impact-grab boring machine
JG/T5110—1999
This standard specifies the definition, classification, technical requirements, test methods, inspection rules and markings, packaging, transportation and storage of impact-grab boring machines.
This standard applies to automatic loading and unloading impact-grab boring machines (hereinafter referred to as impact-grab machines). 2 Reference Standards
The clauses contained in the listed standards constitute the clauses of this standard through reference in this standard. When this standard is published, the versions shown are valid. All standards will be revised, and the parties using this standard should explore the possibility of using the latest versions of the following standards. GB/T985—1988
Basic types and dimensions of weld grooves for gas welding, manual arc welding and gas shielded weldingGB/T1955—1986
Construction winches
GB/T6947—1986
Test specifications and methods for construction winches
GB/T8918-1996 Wire rope
JG/T5011.1-1992
General technical conditions for steel castings for construction machinery and equipmentJG/T5011.4-1992
JG/T 5011.12-1992
3 Definitions
This standard adopts the following definitions.
General Technical Conditions for Gray Iron Castings of Construction Machinery and Equipment
General Technical Conditions for Painting
3.1 Maximum Drilling Diameter maximum drilling diameter is the nominal drilling diameter. Its value is the grab structure diameter plus 50mm. The grab structure diameter is the distance between the diagonal points when the grab plate is open.
3.b Grab capacity hammer grab capacity The capacity of the open grab: the theoretical volume of the geometry formed when the grab is closed. The capacity of the closed grab: the theoretical capacity of the geometry formed when the grab is closed. 3.3 Impact part mass hammer grab impacting mass The total mass of the impacting object of the hammer grab.
4 Classification
4.1 Model
Approved by the Ministry of Construction of the People's Republic of China on January 26, 1999 and implemented on August 1, 1999
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Update and variant code: expressed in uppercase printed Chinese phonetic letters Main parameter code: indicates the maximum hole diameter, mm Group code: indicates punching and grabbing hole-making machine
Marking example
The maximum hole diameter is 1000mm, the first updated punching and grabbing hole-making machine: punching and grabbing machine KZ1000AJG/T5110
Basic parameters and dimensions,
Basic parameters and dimensions are shown in Table 1.
Maximum hole diameter (main parameter)
Maximum hole depth
Average rope speed
Capacity of grab bucket
(not less than)
Mass of impact part
(not less than)
Technical requirements
Basic requirements
Basic parameters and dimensions
The working environment temperature of KZ1000
The impact grab machine is -10 to +40℃. 5.1.1
KZ1200
KZ1500
5.1.2 The impact grab machine shall be manufactured in accordance with the drawings and technical documents approved by the prescribed procedures. 5..3
KZ2000
KZ2500
All purchased and outsourced parts must have certificates of conformity and shall be subject to random inspection. Assembly can only be carried out after confirmation of qualification. 5.1.4 The raw materials of all parts shall have a certificate of qualification or warranty from the supplier. 5.1.5 Weldments shall comply with the following provisions:
a) The weld type and size shall comply with the provisions of GB/T985, b) The welds of welded parts shall not have defects such as weld nodules, arc pits, pores, cracks, surface weld depressions, and excessive spatter. The operating mechanism of the punching and grabbing machine is flexible and the positioning is accurate and reliable. 5.1.6
The reliability index of the punching and grabbing machine shall comply with the provisions of Table 2, and the reliability test time shall not be less than 250h. The mechanical properties and technical requirements of steel castings shall comply with the provisions of JG/T5011.1. 5.1.8
The mechanical properties and technical requirements of gray iron castings shall comply with the provisions of JG/T5011.4. Table 2 Reliability index of punching and grabbing machine
First failure working time MTTFFbZxz.net
Mean time between failures MTBF
Reliability R
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5.2 Technical performance
5.2.1 The fasteners of the punching and grabbing machine shall not be loose, and there shall be no omissions in the places where anti-loosening devices are required. 5.2.2 When installing the automatic hook and unloader, the center of the hook and unloader should be on the same central axis as the steel wire rope of the sky pulley and the center of the hole. The hook should be able to swing flexibly, and its swinging plane should be parallel to the central axis to ensure that the automatic hook and unloader can work normally. 5.2.3 All parts that need lubrication should have reliable and easy-to-maintain lubrication devices, and lubricants should be added regularly. 5.2.4 When the punching and grabbing machine is in normal working condition, the noise value should not be greater than 75dB (A) at 7m from the edge of the machine. 5.2.5 The working tension of the single rope of the winch should be twice the mass of the hand impact part. 5.2.6 The wire rope of the winch should comply with the provisions of GB/T8918. 5.2.7 The clutch and brake of the winch of the impact grab machine should act quickly and flexibly. 5.2.8 The winch of the impact grab machine should comply with the provisions of GB/T1955. 5.2.9 The structural parts of the impact grab machine should have sufficient strength and rigidity. 5.2.10 The pile frame of the impact grab machine should have a windproof protection device. 5.3 Appearance requirements
The painting of the impact grab machine shall comply with the provisions of JG/T5011.12 unless there are special requirements in the product drawings or technical documents. The factory name, trademark, instructions, warnings and other signs on the product should be clearly different from the paint color on the surface. 6 Test method
Test preparation
6.1.1 Technical information
The test sample should be equipped with relevant technical documents such as the instruction manual. 6.1.2 Test Prototype
Before the test, the prototype should be fully debugged and operated, cleaned and put into normal operation. 6.1.3 Main Instruments and Apparatus
The instruments and apparatus used for the test should be within the calibration period. For various direct measurement parameters, if there is no special instruction, the average value of three measurements should be taken. The measurement accuracy should comply with the provisions of Table 3
Table 3 Measurement Accuracy Table
6.1.4 Test Site
6.1.4.1 The site for static parameter measurement should be solid and flat. Measurement Parameter
Accuracy Requirements
6.1.4.2 When measuring noise, there should be no reflective objects (such as buildings, walls, etc.) within a radius of 25m from the center of the prototype. The background noise should be at least 10dB(A) lower than the noise of the tested prototype. 6.2 Static Parameter Measurement
Measure the main dimensions, mass and volume of the grab bucket. 6.2.1 Main dimensions (see Figure 1)
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6.2.11 Measurement conditions
The grab plate is in the open state and vertically on the measurement site. 6.2.12/Main instruments and tools
Lifting equipment, steel tape measure, steel ruler, steel angle square, marking needle, etc. 6.2.1.3 Measurement method
Measure the height and width of the grab bucket and record them in Table A1 of Appendix A (Standard Appendix). 6.2.2 Mass of the impact part of the grab bucket
6.2.21 Measurement conditions
The prototype is in a non-working state.
6.2.242 Main instruments and tools
Lifting equipment, scale or floor scale
6.2.2.3 Measurement method
Weigh the mass of the impact part of the prototype before general assembly (it is allowed to be disassembled into several parts, and the masses are weighed separately and then summed up), and record it in Table A2 of Appendix A.
6. 3 Grab half volume
6.2.3.1 Measurement conditions
The grab bucket is in a closed lifting state.
6.2.3.2 Main instruments
Scale, measuring cylinder.
6.2.3.3 Measurement method
Depending on the geometric dimensions of the grab bucket, the grab bucket volume can be measured or calculated by one of the following two methods. a) When the grab bucket is an irregular geometric body after closing, pour sand and soil into the grab bucket through a measuring container until it reaches the edge of the grab bucket plate. According to the density of sand and soil and the mass of sand poured, calculate the theoretical volume of the grab bucket according to formula (1). The grab bucket volume is calculated according to formula (2) for open grab buckets and formula (3) for closed grab buckets. Record the sand mass, density, theoretical volume and grab bucket volume in Table A3 of Appendix A. Vo
￥×10
Form: Vi=2V.
Closed form: V2=V.
bzsos，m(1)
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Wy——The mass of the sand poured in, kg/m3;
Wy——The mass of the sand poured in, kg,
V1——The volume of an open grab, m3;
V2——The volume of a closed grab, m3.
b) When the grab is closed and becomes a cone,
Measure the geometric dimensions of the grab and calculate the theoretical volume of the grab according to formula (4). The grab volume is calculated according to formula (2) for an open grab and formula (3) for a closed grab. The cone inner diameter, cone height, theoretical volume of the grab and grab volume are recorded in Table A4 of Appendix A. i2nd2H×10-9
Where d is the inner diameter of the cone, mm,
is the height of the cone, mm.
6.3 Measurement of average speed of grab wire rope
Measurement of average speed of grab wire rope shall be carried out in accordance with the provisions of GB/T6947. 6.4
Measurement of brake and clutch of grab winch The measurement of brake and clutch of grab winch shall be carried out in accordance with the provisions of GB/T6947. Noise measurement
6.5.1 Test conditions
No rain, wind speed shall not exceed 3m/s.
6.5.2 Main instruments
Sound level meter, anemometer.
6.5.3 Location of measuring points
4 points are arranged in front, back, left and right of the edge of the prototype at 7m, and the height of the measuring points from the ground is 1.5m, see Figure 2. Figure 2
6.5.4 Test conditions
The prototype is working normally, the grab is 3m above the ground and falls freely. 6.5.5 Test method
(4)
Use the A-weighted network to measure the background noise and the A-weighted sound pressure level value of each measuring point. Record the measurement results in Table A5 of Appendix A.
6.6 Reliability test
6.6.1 The reliability evaluation index test can be completed in the industrial test and filled in Table A6 of Appendix A. 6.6.2 Reliability calculation method
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6.6.2.1 Working time before first failure (MTTFF) The cumulative working time before the first failure (when the equivalent number of failures is 1) occurs. 6.6.2.2 Equivalent number of failures (r)
The equivalent number of failures (rb) is calculated according to formula (5): rb=
fault category
equivalent number of failures;
the criticality coefficient of the i-th type of failure (see Table 4); the number of the i-th type of failures.
Table 4 Fault Classification
Fault Nature
Fatal Fault
Serious Fault
Minor Fault
Judgment Criteria
Main Fault Contents
1. Bracket Broken:
The machine is seriously damaged and causes personal injury
Main parts are damaged and cannot be repaired by random tools
Causing the working performance of the punching and grabbing machine to decline and stop
After replacing the wearing parts, it can be eliminated within the group
Restore normal work
Does not cause downtime interruption, performance decline, and does not need to replace parts
6.6.2.3 Average Trouble-Free Working Time
The average trouble-free working time is calculated according to formula 6): T.
Where: MTBF
Average trouble-free working time, h;
Accumulated working time, h.
When r<1, take b=1.
6.6.2.4 Reliability
Reliability is calculated according to formula (7):
Where: R——reliability;
Ti——accumulated repair time, h.
7 Inspection rules
The inspection of punching and grabbing machines is divided into factory inspection and type inspection. 7.1 Factory Inspection
2. Faults that cause personal injury or death due to manufacturing quality;
3. The winch is seriously damaged and cannot work
1. The winch motor is damaged;
2. The grab connecting rod and grab plate are broken;
3. The hook in the automatic hanging and unloading device is broken, causing the impact grab machine to fail to work;
4. The wire rope is worn off
1. There are slight cracks in the structural parts and weldments;
2. The hanger deviates from the correct position, and the hanging and unloading is not smooth
Other minor faults
7.1.1 Before the impact grab machine leaves the factory, a factory inspection should be carried out. After passing the inspection, it can be shipped with a product certificate. 7.1.2 The items of factory inspection are as shown in Table 5.
Hazard coefficient
(Negative items)
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Inspection items
Appearance quality inspection
Basic performance of winch
Grab bucket part
Static parameters
Pulley block
Wire rope
Safety and environmental protection
Reliability test
Table 5 Inspection items
Inspection content||tt| |Machine shape, surface appearance, welding and paint qualityIsolator, brake
Geometric parameters, quality parameters, capacity parametersMotion stability
Average rope speed
Wire rope tension
Working noise
Automatic hook and unloader
Working time before first failure
Mean trouble-free working time
Reliability
Note: "△" in the column of type inspection and factory inspection indicates that the items need to be measured. 7.2
Type inspection
7.2.1 The punching and grabbing machine shall be subject to type inspection in one of the following situations: a) When the new product is finalized or the finalized product is transferred to production; b) When the product is resumed after three years of suspension; c) When the product has major changes in design, process or materials; dD When the national quality supervision department proposes the requirement of type inspection. 7.2.2
Type inspection sampling rules
Random sampling method is adopted for type inspection of punching and grabbing machines. The inspection batch is not less than two units, and the prototype is 7.2.3 Type inspection items are carried out according to Table 5. 7.2.4 Judgment rules
Type test
Factory test
In the inspection, except for minor items such as appearance, quality and geometric parameters, two items are allowed to be unqualified. If there is one unqualified item in other items, double sampling should be done from the same batch of products, and the item should be retested. If it is still unqualified, the batch of products is unqualified. If one item in the reliability test does not meet the requirements, the batch of products is judged to be unqualified. 8
Marking, packaging, transportation and storage
The punching and grabbing machine should be fixed with a metal label in a conspicuous place. The content of the label is as follows: a) product name and model;
b) product factory date;
c) product factory number,
d) manufacturer name or mark;
e) main technical parameters.
8.2 When the punching and grabbing machine leaves the factory, the manufacturer shall provide the following technical documents: a) two copies of the product manual;
b) product certificate of conformity;
c) packing list;
d) list of wearing parts.
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8.3 Packaging
The packaging of the punching and grabbing machine adopts a combination of bare packaging and wooden box packaging. 8.3.1 Bare packaging
a) Grab plate (blade);
b) Large structural parts of the punching and grabbing machine.
8.3.2 Wooden box packaging
Electrical equipment, winch, random tools and spare parts8.3.3 The packaging box should be rainproof and moisture-proof, and the parts, tools and spare parts in the box should be fixed reliably. 8.34 The following contents should be clearly marked on the outside of the packaging box: a) Manufacturer's name;
b) Product name and model;
c) Factory number and date;
d) Packing box number, external dimensions and total weight; e) Receiving unit and address;
f) Words or signs of lifting position.
All technical documents of the punching and grabbing machine should be sealed with moisture-proof materials and placed in the box. Transportation and storage
The punching and grabbing machine after packaging should be placed in a dry place and should not be stored in the open air under normal transportation and storage conditions. The effective period of the anti-rust of the punching and grabbing machine should be guaranteed, which shall not be less than six months from the date of leaving the factory. V88
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Prototype Model
Test Date
Test Personnel
Grab Height
Grab Width
Prototype Model
Test Date
Test Personnel
Prototype Model
Test Date
Test Personnel
Average Value
Sand Density
(Measured Value)
Appendix A
(Appendix to the Standard)
Test Record Table
Table A1 Grab Main Dimensions Measurement Table
Factory Number||tt| |Test location
Measurement dimensions
Grab bucket mass measurement record
Factory number
Test location
Measurement value
Table A3 Grab bucket volume measurement record
(After the grab bucket is closed, it is an irregular geometry) Factory number
Test location
Sand and soil quality
(Measured value)
Theoretical volume
(Calculated value)
Average value
Average value
(Calculated value)
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Prototype Model
Test date
Test personnel
Inner diameter of cone
Average value
Prototype model
Test date
Test officer
Test working conditions
7m away from the edge of the machine
Product model
Manufacturer name
Test date
(Measured value)
Operation time
Repair time
Table A4 Grab bucket volume measurement record
(When the grab bucket is closed and becomes a cone)
Factory number
Test location
Cone height||tt ||(measured value)
Theoretical volume
(calculated value)
Noise test record
Factory number
Test location
Background noise
Measured value
Test location
Manufacturing date
Reliability test record
Maintenance time
Repair items
(calculated value)
Average value
Factory number
Test personnel
Nature of fault
Criticality coefficient
Maintenance items
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