JB/T 7336-1994 Technical requirements for monorail trolley suspension conveyors
Some standard content:
Mechanical Industry Standard of the People's Republic of China
JB/T7336-94
Monorail trolley suspended conveyor
Technical conditions
Published on 1994-07-18
Ministry of Machinery Industry of the People's Republic of China
Implementation on 1995-07-01
Mechanical Industry Standard of the People's Republic of China
Monorail trolley suspended conveyor
Technical conditions
1 Subject content and scope of application
JB/T 7336 - 94
This standard specifies the technical requirements, test methods and inspection regulations, marking, packaging, transportation and storage of monorail trolley suspension conveyors. This standard applies to monorail trolley suspension conveyors (hereinafter referred to as conveyors) with a load capacity not exceeding 2.2 Reference standards
GB1497
GB2681
GB2682
GB3768
GB4064
GB6404
GB8023
GB9286
GB11352
GB/T13306
GB/T13384
JB/T6391.2
JB7018
ZB J80 013.2
3 Technical requirements
Technical conditions for high-quality carbon structural steel
Basic types and dimensions of weld grooves for gas welding, manual arc welding and gas shielded weldingBasic types and dimensions of weld grooves for buried double weldingBasic standards for low-voltage electrical appliances
Color of conductors in electrical complete sets
Flickering color of indicator lights and buttons in electrical complete setsSimplified method for determining the sound power level of noise sources
Guidelines for safe design of electrical equipment
Determination of the sound power level of noise in gear devices Methods Rust level and rust removal level of steel surface before painting Cross-cut test of paint film of color wash and clear varnish
Carbon steel parts to be manufactured for general engineering
General technical conditions for packaging of mechanical products
Technical conditions for chain electric hoists
Technical conditions for sliding transmission devices of cranes
Safety regulations for monorail trolley suspension conveyors
Technical parts for wire rope electric hoists
3.1 The conveyor shall comply with the requirements of this standard and shall be manufactured according to the drawings and technical documents approved by the prescribed procedures. 3.2 Cast carbon steel parts for conveyors shall comply with the provisions of GB11352. 3.3 The welded grooves of metal structural parts of conveyors shall comply with the provisions of GB985 and GB986, and the welds shall be free of defects such as burn-through, pores, clamping, cracks, and lack of fusion.
3.4 Machine performance
3.4.1 The conveyor should be able to work normally in an environment with an ambient temperature of -10 to +45°C and a relative strength of no more than 85%. 3.4.2 Under normal working conditions, the operation rate of the conveyor should not be less than 95%. The operation rate is calculated according to formula (1): Operation rate = Cumulative operation time of the conveyor (h) × 100% Cumulative operation time of the conveyor (h)
Approved by the Ministry of Machinery Industry on July 18, 1994
Implementation on July 1, 1995
JB/T 733694
3.4.3 The load vehicle should have the function of accumulation and release, that is, when the load vehicle on the previous platform stops or the switch and lifting device are not on track, the load vehicle should be able to automatically accumulate and stop.
3.4.4 When the conveyor is working, the load vehicle should run smoothly, turn flexibly, open and close the switch accurately, lift the lifting device smoothly and flexibly, the electronic control system should work reliably, and the safety device should be sensitive and accurate. 3.5 Tracks and Supports
3.5.1 Tracks and supports should be able to withstand loads under maximum load conditions. When the track is loaded, its deflection should not be greater than 1/400 of the track span.
3.5.2 The track is made of rolled profiles or combined section types. When aluminum alloy rolled profiles are used, they should be hardened. 3.5.3 Track distortion
3.5.3.1 The parallelism of the corresponding edges of the same surface of the straight track on two cross sections 3m apart is 0.5% of the track height. 3.5.3.2 The bottom surface of the curved track is used as the reference. The verticality of the web of the track at the other end to the reference plane is 1.5% of the track height. 3.5.4 There should be a smooth transition between the straight track and the curved section. The limit deviation of the center angle of the curved section track is 2\, and the limit deviation of the radius of curvature is ±5mm
3.5.5 All track joints should have supports and suitable connectors. 3.5.6 The connection between the track and the support should be able to adjust the track. 3.6 Carrier
3.6.1 The carrier should run flexibly and smoothly without jamming or abnormal noise. 3.6.2 The carrier should ensure that it will not derail or fall when parts are damaged. 3.6.3 When the running wheels and guide wheels of the carrier are made of steel wheels, their mechanical properties should not be lower than the requirements of 45 steel in GB699. The surface hardness value shall not be lower than 40HRC. Other materials or non-metallic materials inlaid on the surface are allowed. 3.6.4 The guide wheels of the carrier should rotate flexibly, and the gap with the track should not be greater than 3mm. 3.6.5 When the carrier lifts the rated load, it should operate normally on the track with a slope of no more than 35%, and the wheels should not slip. 3.6.6 When the vehicle is subjected to static load test, it shall be able to withstand a test load of 1.25 times the rated load. After the test, each load-bearing component shall be free of cracks, permanent deformation, oil splattering, and loose joints. When the vehicle is subjected to dynamic load test, it shall be able to withstand 1.1 times the rated load, and shall run smoothly, brake reliably, and accumulate and release accurately. 3.6.7
3.6.8 The parking accuracy of the vehicle when it normally operates at each workstation shall be able to meet the production process requirements. 3.6.9 Reducer
The reducer shall run smoothly and flexibly, and shall not have any impact, vibration, oil leakage, etc. 3.6.9.1
After the reducer has been running continuously for 4 hours, the oil temperature shall not be higher than 80C, and the temperature rise shall not exceed 40C. 3.6.9.3
When the reducer is operating normally, the noise level shall not be greater than 65dB(A). 3.6.10
Lifting device
3.6.10.1 When electric reed is used as the lifting mechanism, it shall comply with the provisions of JB5317.2 and ZBJ80013.2. When other types of lifting mechanisms are used, their performance shall meet the performance requirements of the conveyor. 3.6.10.2
3.7 The sliding transmission device of the conveyor shall comply with the relevant provisions of JB/T6391.2. 3.8 Turnout
3.8.1 The guide wheel of the turnout shall be adjustable, and the movable frame shall move flexibly and smoothly without left and right abnormal movement and jamming. 3.8.2 The turnout shall be accurately connected, the deviation of the connection tread shall not exceed 1mm, and the connection gap shall not exceed 2mm. 3.8.3 A safety baffle shall be installed on the turnout. The safety baffle shall be able to withstand the impact force generated by the load-carrying vehicle at normal operating speed when the load is 1.1 times the rated load.
3.8.4. The axis of the push rod of the movable frame shall be parallel to the plane of the movable frame. There shall be no lifting or lowering of the movable frame and jamming during operation. 3.8.5 When the turnout is subjected to static load test, the movable frame and the track shall not sink or be deformed. 3.8.6 The tongue of the tongue-type turnout shall rotate flexibly, be in place, and not be jammed. The tongue-in-place travel switch shall be installed on the controlled turnout and interlocked with the electrical control.
JB/T733694
3.8.7 The working surface of the turnout tongue plate shall not be higher than the track tread by more than 1mm. Under the rated load, the maximum sinking amount of the turnout tongue end shall not be more than 1.5mm.
3.9 Lifting device
3.9.1 The lifting device should be flexible and stable, without obstruction and abnormal noise, and the safety protection device should work reliably. 3.9.2 The movable guideway of the lifting device should remain horizontal during the lifting process. When connecting the rails, its deviation should not exceed 1mm, and the loading interval should not exceed 2mm.
3.9.3 The lifting device should be equipped with a safety protection device. When the movable track is not aligned with the fixed track, the protection device should prevent the carrier from sliding off the movable track or the fixed track.
3.9.4 The verticality tolerance between the two guide rails of the lifting device and the ground is H/1000 (H is the height of the guide rail). 3.10 Installation and assembly
3.10.1 All parts and components of the conveyor should be inspected and qualified, and the purchased parts should have a certificate of qualification, and can be assembled after the inspection department conducts factory inspection.
3.10.2 The conveyor is installed by the user. Before leaving the factory, the cargo car, turnout, and main electrical control equipment should be pre-assembled and qualified. 3.10.3 When installing the track, the straightness of the straight section track should be ensured to be 0.8L/1000 (L is the length of the straight section track), but the maximum value shall not be greater than 30mm. The verticality of the center line of the track section and the horizontal plane is h/100 (h is the height of the track). 3.10.4 The deviation at the track joint should not be greater than 1mm, and the interface gap should not be greater than 2mm. 3.10.5 The turnout installation should be kept horizontal, and the deviation of the fixed frame axis from the positioning axis is ±5mm. 3.10.6 When installing the lifting device, the deviation between the two columns and the positioning position should be no more than 5mm. 3.11 Painting
3.11.1 Before painting the conveyor parts, burrs, scale, rust, welding and oil stains should be removed. The surface pretreatment of the structural parts should reach the St2 level in GB8923. Painting should be carried out in a clean place. The ambient temperature should be above 5C, the humidity should be below 85%, and the working surface temperature should not exceed 60℃.
3.11.2 Each part of the conveyor should be painted with a primer layer (excluding maintenance primer) and two layers of topcoat. No lag is allowed. The thickness of each paint film is 25~35μm, and the total thickness of the film is 75~105μm. 3.11.3 The oil surface should be uniform, bright, complete, and consistent in color, without obvious brush marks, accumulation and other defects. The film adhesion should meet the requirements of GB9286.
3.11.4 The exposed processing matching surface should be coated with anti-rust grease, and the exposed processing non-matching surface should be coated with primer and topcoat. 3.11.5 The paint color of moving parts should be eye-catching. 3.12 Electric control system
3.12.1 The color of electrical wires should meet the requirements of GB2681, and the color of indicator lights and buttons should meet the requirements of GB2682. 3.12.2 Electric control equipment should meet the requirements of GB1497 and GB4064. 3.12.3 The power line of the control system should be completely separated from the power line. 3.13 Safety and hygiene
3.13.1 The safety requirements of the conveyor should meet the requirements of JB7018. 3.13.2
The noise level of the conveyor during normal operation shall not exceed 70dB(A). 3.14 Completeness
The completeness of the conveyor includes:
Cargo car:
Track (including straight track and curved track):
Turnout;
Lifting device:
Track support and accessories:
Safety baffle;
&.Electronic control equipment:
Note, the completeness can be determined according to the user's process requirements. 3.14.2 Random documents include:
a. Product instruction manual:
b. Packing list;
Wearable parts atlas and installation atlas;
d. Certificate of conformity.
JB/T 7336--94
3.15 Under the condition that the user complies with the rules for the storage, installation and use of the conveyor, within 18 months from the date of delivery (the service life shall not exceed 12 months), if the product is damaged or cannot work properly due to poor manufacturing, the manufacturer shall repair (or replace) the product parts for the user free of charge. bzxz.net
4 Test methods and inspection rules
4.1 The load lifting of the load carrier in the following provisions shall be carried out under the condition of stable, impact-free and gradually increasing the load. 4.2 Each conveyor shall be inspected and qualified by the quality inspection department of the manufacturer before it can be shipped, and a product certificate shall be attached. 4.3 No-load test and rated load test
Turn on the power supply, and each mechanism enters the ready-to-work state, start the load carrier, run the specified route for no less than two times, and repeat the above test by lifting the rated load.
Carrier
Inspect the clearance between the carrier and the track;
The carrier should run flexibly and smoothly without jamming or abnormal noise; The guide wheel should rotate flexibly:
Inspect the parking accuracy of the carrier at each workstation. 4.3.2
Deviation.
The guide wheel of the turnout should be adjustable;
Inspect whether the movable frame moves flexibly and smoothly and whether there is any movement or jamming; Check the accuracy of turnout connection and the deviation and gap of the connection tread; Check the movement of the movable frame and the controlled turnout: Detect the height difference between the working surface of the turnout tongue plate and the track tread, the sinking amount of the turnout tongue end, and the fixed frame axis relative to the positioning axis. 4.3.3 Lifting device
Inspect the deviation and connection gap of the lifting device and movable track when connecting; Check the movement of the lifting device.
4.3.4 Determine the noise of the whole machine
4.3.5 Check whether the reducer is leaking oil.
4.4 Static load test
Hang any load-carrying vehicle on the track, run to the middle of the track span (the section between the two supports is one span), lift 1.25 times the rated load, and let it stand for 30 minutes.
The load-carrying vehicle should be guaranteed not to derail or fall; unload the load, and check whether the load-bearing components are loose, deformed by water for a long time, cracked, or peeled off. 4.4.2 Drive the load-carrying vehicle to the active track of the turnout, lift 1.25 times the rated load, and let it stand for 15 minutes. a.
Check whether the active frame and track have obvious sinking and deformation; unload the load, and check whether there are cracks and peeling of paint. 4.4.3 Drive the load-carrying vehicle to the active track of the lifting device, lift 1.25 times the rated load, and let it stand for 15 minutes. a. Check whether the lifting device has track sinking; JB/T7336-94
b. Remove the load and check for cracks, permanent deformation and paint peeling. 4.5 Dynamic load test
After the static load test, the load carrier is hoisted with 1.1 times the rated load and runs at the rated speed on the straight track, curved track, turnout active track and lifting device active track.
a. Check the operation, braking and accumulation of the load carrier: b. Check the condition of the electrical control system.
4.6 Turnout safety baffle test
On the test bench equipped with the turnout, the load carrier is hoisted with 1.1 times the rated load and runs at the rated speed. It hits the turnout safety baffle, and the safety baffle should not be significantly deformed.
4.7 Test of safety protection device of lifting device
4.7.1 The load carrier is lifted to 1.1 times of the rated load, and the lifting frame is lifted so that the load is 200~300mm above the ground (the lifting frame should be in an out-of-position state). Then the machine is stopped and the power is turned on to allow the load carrier to run at the rated speed. The safety protection device should ensure that the load carrier does not slide off the movable track. 4.7.2 The load carrier is lifted to 1.1 times of the rated load and runs at the rated speed to the end of the fixed track of the lifting device (the lifting frame should be in an out-of-position state). The safety protection device should ensure that the load carrier does not slide off the fixed track. 4.8 Operation rate test
On at least 2 load carriers and at least 1 turnout conveyor, operate for more than 48 hours (not less than 12 hours per day) according to the process requirements, record the cumulative time of the whole line downtime due to faults and the calculated operation time, and calculate the operation rate according to formula (1) of this standard. 4.9 Track deflection test
A cargo vehicle is moved to the middle of the span of the track with the maximum span (a section between two sections is a span), and a cargo vehicle is placed in front and behind at the same time; each cargo vehicle pre-lifts the rated load twice at the same time, and then puts it down; a steel ruler is vertically attached to the side of the center of the span track, and the theodolite is aligned with a certain scale of the steel ruler. Three cargo vehicles simultaneously lift the rated load. 200-300mm from the ground, let it stand for 15 minutes, record the scale displayed by the theodolite, and the difference between the two scale values is the vertical straightness of the track. 4.10 Straightness test of the straight section track of the conveyor 4.10.1 Place the longitude and latitude only above one end of the track to adjust the level and fix it: place a steel ruler vertically at any point on the top surface of the track (select more than 5 points), record the scale displayed by the theodolite, and the difference between the maximum and minimum values is the straightness of the straight track in the vertical direction. 4.10.2 Place the longitude and latitude on the same plane outside one end of the track and draw equal-length scales at the two ends of the track to be tested. Align the longitude and latitude with this scale. Fix it. Place a steel ruler horizontally and vertically on the side of the track at any point of the track (select more than 5 points). Record the scales displayed by the longitude and latitude. The difference between the maximum and minimum values is the horizontal straightness of the straight track. 4.11 Track distortion test
4.11.1 Place a 3m long straight track on the platform and flatten one end of the track. Use a feeler gauge to measure the maximum and minimum values between the bottom line of the other end and the platform. The difference is used as the parallelism of the corresponding sides of the same surface. 4.11.2 Place a curved track on the platform and flatten one end of the curved track. Find the midpoint of the upper plane of the curved track at the other end. Place the hanging line on the midpoint of the upper plane and measure the distance between the hanging line and the midpoint of the lower plane of the curved track, which is used as the verticality of the rubber plate to the reference plane. 4.12 Test of the limit deviation of the center angle and the limit deviation of the curvature radius of the curved track. Place the curved track on the corresponding sample and measure the difference between the workpiece and the sample line. 4.13 Reducer test
Fix the reducer and motor, add lubricating oil as required, and measure the oil temperature with a thermometer at room temperature. Replace the oil on the reducer surface. Turn on the power supply and run continuously for 4 hours. Measure the noise according to the requirements of GB6404. After stopping, wipe the reducer surface with filter paper and visually inspect for oil stains. Open the sealing cover and measure the oil temperature.
4.14 Paint film thickness test
Select 10 points at random on the non-working surface of each component of the conveyor (no less than 2 points for each main component). Use a paint film thickness gauge to measure the total thickness of the paint film.
4.15 Continuous film adhesion test
JB/T 7336---94
The paint film adhesion shall be subjected to a cross-cut test as specified in GB9386: 4.16 Determination of whole machine noise
The conveyor shall hoist the rated load in a non-enclosed workshop and enter into working state. The whole machine noise shall be measured with a sound level meter as specified in GB3768.
Marking, packaging, transportation, storage
Each trolley of auxiliary conveyor shall be distinguished by numbers, letters or colors. 5.1
5.2 Each trolley shall be marked with rated load in a conspicuous position. 5.3
Conveyors shall be equipped with product labels in obvious positions. Their types and dimensions shall comply with the provisions of GB/T13306, including: a.
Manufacturer name:
Product model and name:
Rated load, running speed, working voltage: Control mode:
Manufacture date and number.
For the relatively independent parts of the cargo truck, doze and lifting device, there should be labels for each part, which should comply with the provisions of GB/T13306. The contents include:
Manufacturer name:
Part model and name:
Main technical parameters of the parts:
Manufacturing date and number.
The packaging of the conveyor should comply with the requirements of GB/T13384. 5.5
The random documents should be packed in bags first and then put into boxes. The words "Document Here" should be written on the outside of the box. 5.6
Conveyor products should be stored in a well-ventilated warehouse without opening the packaging. There should be no corrosive gas around. Additional notes:
This standard was proposed and managed by the Beijing Hoisting and Conveying Machinery Research Institute of the Ministry of Machinery Industry. This standard was funded and signed by Huangshi Hoisting Machinery General Factory and Beijing Hoisting and Conveying Machinery Research Institute. The main drafters of this standard are Liu Hong, Xu Huichuan, Liu Lei and Yu Liqun.
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