CN118533513B - Tractor lifting system test platform - Google Patents
Tractor lifting system test platform Download PDFInfo
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- CN118533513B CN118533513B CN202411008114.0A CN202411008114A CN118533513B CN 118533513 B CN118533513 B CN 118533513B CN 202411008114 A CN202411008114 A CN 202411008114A CN 118533513 B CN118533513 B CN 118533513B
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- 238000012360 testing method Methods 0.000 title claims abstract description 39
- 230000005484 gravity Effects 0.000 claims abstract description 35
- 239000000725 suspension Substances 0.000 claims description 12
- 230000000903 blocking effect Effects 0.000 claims description 4
- 238000004088 simulation Methods 0.000 abstract description 7
- 230000002159 abnormal effect Effects 0.000 abstract description 5
- 230000007246 mechanism Effects 0.000 description 15
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M17/00—Testing of vehicles
- G01M17/007—Wheeled or endless-tracked vehicles
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Of Balance (AREA)
- Agricultural Machines (AREA)
Abstract
The invention is applicable to the technical field of tractors, and provides a test platform of a tractor lifting system, which comprises: a frame; the lifting plate is arranged in the frame, a traction piece is arranged on the lifting plate, the traction piece comprises a traction rope and a lifting rod, the lifting rod can be hung on a lifting device of the tractor, and a lifting system of the tractor is tested; the adjusting groups can control the main gravity blocks with different numbers to move along with the lifting plate; the unbalanced load group comprises an unbalanced load driving piece fixedly connected to the lifting plate, a hanging rod arranged at the output end of the driving piece and a hook rotating synchronously with the hanging rod, and the lifted load condition can be adjusted through the adjustment group, so that the unbalanced load group can be suitable for tractors of different types; the off-load group can simulate the off-load condition of one side of a structure hung on the tractor, and an abnormal condition simulation experiment condition is added.
Description
Technical Field
The invention relates to the technical field of tractors, in particular to a test platform for a tractor lifting system.
Background
After the production and assembly of the tractor are finished, a final inspection test is required to be carried out on a lifting system of the tractor, and heavy objects are pulled and lifted through the lifting system, so that the test is carried out on data indexes such as the functionality and stability of the lifting system, and the product function is guaranteed to be complete; however, when the existing tractor lifting system test bed is used for testing a tractor, only the vertical downward load is tested, and the phenomenon that the weights of two sides of a bearing object are different or the tractor is unbalanced in the actual use process of the tractor cannot be simulated, so that test data are lacked.
The Chinese patent with the grant bulletin number of CN115096615B discloses a lifting capacity testing system of an agricultural wheeled tractor suspension device, which comprises a machine body fixing mechanism, a height measuring mechanism, a lifting force measuring mechanism and a control subsystem; the body fixing mechanism is used for fixing the body of the tractor; the height measuring mechanism is used for measuring the height of a suspension point of a suspension arm of the tractor; the lifting force measuring mechanism is used for measuring the tensile force of the end part of the suspension arm of the tractor, which is overhanging above the foundation pit; the control subsystem is used for measuring and controlling the lifting force measuring mechanism and measuring the hydraulic oil temperature of a hydraulic system of the tractor; the lifting capacity test system cannot simulate the conditions of different weights on two sides of a tractor carrier, and has poor practicability.
In summary, it is clear that the prior art has inconvenience and defects in practical use, so that improvement is needed.
Disclosure of Invention
Aiming at the defects, the invention aims to provide a test platform for a tractor lifting system, which is applicable to different types of tractors, can simulate the condition of one side of a structure hung on the tractor to be unbalanced, is additionally provided with abnormal condition simulation test working conditions, and ensures the lifting test diversity and the maximum fitting of actual use conditions of the tractor.
In order to achieve the above object, the present invention provides a tractor lifting system test platform, comprising: a frame; the lifting plate is arranged in the frame and provided with a traction piece; the adjusting groups can control the main gravity blocks with different numbers to move along with the lifting plate; the unbalanced load group comprises an unbalanced load driving piece fixedly connected to the lifting plate, a hanging rod arranged at the output end of the driving piece and a hook rotating synchronously with the hanging rod, wherein the unbalanced load driving piece drives the hanging rod to move in the lifting plate, a sliding groove is formed in the hanging rod, and a limiting pin matched with the sliding groove is arranged on the lifting plate; the secondary gravity block is arranged at the output end of the hook, and the hook drives the secondary gravity block to move up and down.
According to the tractor lifting system test platform disclosed by the invention, the output end of the unbalanced load driving piece is provided with the track, the poking pin is connected in a sliding manner in the track, and the poking pin is fixedly connected to the suspension rod.
According to the tractor lifting system test platform disclosed by the invention, the sliding rod is arranged in the hanging rod, the sliding rod can axially slide but cannot radially rotate relative to the hanging rod, an elastic piece is arranged between the sliding rod and the hanging rod, a hook is fixedly connected to the hanging rod, and a blocking piece is arranged on the hook.
According to the tractor lifting system test platform disclosed by the invention, the sliding chute consists of the horizontal groove and the rotary groove, and the limiting pin can drive the hanging rod to rotate by 90 degrees when sliding in the sliding chute.
According to the tractor lifting system test platform disclosed by the invention, the adjusting group comprises a secondary driving piece fixedly connected to the frame, a magnetic block arranged at the output end of the secondary driving piece, a limiting sleeve clamped on the magnetic block and a bearing block sleeved outside the limiting sleeve, wherein the secondary driving piece drives the magnetic block to move up and down, the bearing block is arranged at the output end of a main driving piece and drives the bearing block to move up and down, and the magnetic block is adsorbed with the bearing block; the stop collar is located the output of extensible member just extensible member drive stop collar rotates.
According to the tractor lifting system test platform disclosed by the invention, the output end of the auxiliary driving piece is provided with the screw rod, the screw rod is rotationally connected with the lower supporting block, the screw rod is in threaded connection with the magnetic block, the limit sleeve is sleeved outside the screw rod, the limit sleeve is rotationally connected with the upper supporting plate, the bottom of the limit sleeve is provided with the driving wheel, the driving wheel is meshed with the rack, and the rack is arranged at the output end of the telescopic piece.
According to the tractor lifting system test platform disclosed by the invention, the main driving piece is fixedly connected with the lifting plate, the output end of the main driving piece is provided with the driving wheel and the idler wheel which are meshed with each other, the driving wheel and the idler wheel are respectively fixedly connected with one roller, the two rollers are wound with the bearing ropes, and the two bearing ropes are fixedly connected with the bearing block.
According to the test platform for the tractor lifting system, the secondary gravity block is fixedly connected with the side hanging rod, and the side hanging rod is abutted with the hook.
The invention provides a tractor lifting system test platform, which comprises: a frame; the lifting plate is arranged in the frame, a traction piece is arranged on the lifting plate, the traction piece comprises a traction rope and a lifting rod, the lifting rod can be hung on a lifting device of the tractor, and a lifting system of the tractor is tested; the adjusting groups can control the main gravity blocks with different numbers to move along with the lifting plate; the unbalanced load group comprises an unbalanced load driving piece fixedly connected to the lifting plate, a hanging rod arranged at the output end of the driving piece and a hook rotating synchronously with the hanging rod, wherein the unbalanced load driving piece drives the hanging rod to move in the lifting plate, a sliding groove is formed in the hanging rod, and a limiting pin matched with the sliding groove is arranged on the lifting plate; the secondary gravity block is arranged at the output end of the hook, and the hook drives the secondary gravity block to move up and down; the invention has the beneficial effects that: the mechanical lifting mechanism is adopted, so that the condition of suspending the mechanical mechanism can be more attached to the actual use of the tractor, the test result is more accurate, and the high-quality delivery of the tractor is ensured; the lifting load condition can be adjusted through the adjustment group, and the tractor can be suitable for tractors of different types; the device can simulate the condition of unbalanced weight on one side of a structure hung on the tractor through the unbalanced load group, and additionally, abnormal condition simulation experiment working conditions are added, so that the lifting test diversity and the maximum fitting of the actual use condition of the tractor are ensured.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic cross-sectional view of FIG. 1 of the present invention;
FIG. 3 is a schematic diagram of a conditioning pack structure of the present invention;
FIG. 4 is a schematic cross-sectional view of the stop collar of the present invention;
FIG. 5 is a schematic view of the structure of the unbalanced load set according to the present invention;
FIG. 6 is a schematic cross-sectional view of FIG. 5 in accordance with the present invention;
FIG. 7 is a schematic view of the hanger bar construction of the present invention;
In the figure, 1-frame, 2-lifting plate, 201-traction rope, 202-lifting rod, 203-limit pin, 3-main gravity block, 301-traction plate, 302-bearing hole, 4-bearing block, 401-bearing rope, 402-main driving piece, 403-idle wheel, 404-roller, 405-driving wheel, 406-limit sleeve, 407-magnetic block, 408-auxiliary driving piece, 409-telescopic piece, 410-rack, 411-driving wheel, 412-screw, 413-upper supporting block, 414-lower supporting block, 5-bias driving piece, 501-track, 6-bias frame, 601-side hanging rod, 602-secondary gravity block, 7-hanging rod, 701-toggle pin, 702-chute, 703-sliding rod, 704-blocking piece, 705-hook, 706-elastic piece.
Detailed Description
For the purpose of making apparent the objects, technical solutions and advantages of the present invention, the present invention will be further described in detail with reference to the accompanying drawings and examples, it being understood that the specific examples described herein are for illustration only and are not intended to limit the present invention.
Referring to fig. 1 to 7, the present invention provides a tractor lifting system test platform comprising: a frame 1; the lifting plate 2 is arranged in the frame 1, a traction piece is arranged on the lifting plate 2, the traction piece comprises a traction rope 201 and a lifting rod 202, the lifting rod 202 can be hung on a lifting device of a tractor, and a lifting system of the tractor is tested; a plurality of main gravity blocks 3 arranged below the lifting plate 2 and an adjusting group acting on the plurality of main gravity blocks 3, wherein the adjusting group can control different numbers of the main gravity blocks 3 to move along with the lifting plate 2; the unbalanced load group is arranged on the side edge of the frame 1 and comprises an unbalanced load driving piece 5 fixedly connected to the lifting plate 2, a hanging rod 7 arranged at the output end of the driving piece and a hook 705 which rotates synchronously with the hanging rod 7, wherein the unbalanced load driving piece 5 drives the hanging rod 7 to move in the lifting plate 2, a sliding groove 702 is formed in the hanging rod 7, and a limiting pin 203 matched with the sliding groove 702 is arranged on the lifting plate 2; the secondary gravity block 602 is arranged at the output end of the hook 705, and the hook 705 drives the secondary gravity block 602 to move up and down; the mechanical lifting mechanism is adopted, so that the condition of suspending the mechanical mechanism can be more attached to the actual use of the tractor, the test result is more accurate, and the high-quality delivery of the tractor is ensured; the lifting load condition can be adjusted through the adjustment group, and the tractor can be suitable for tractors of different types; the device can simulate the condition of unbalanced weight on one side of a structure hung on the tractor through the unbalanced load group, and additionally, abnormal condition simulation experiment working conditions are added, so that the lifting test diversity and the maximum fitting of the actual use condition of the tractor are ensured.
Referring to fig. 1 to 7, preferably, an output end of the unbalanced load driving member 5 of the present invention is provided with a track 501, the unbalanced load driving member 5 is configured as an unbalanced load motor, a stirring pin 701 is slidably connected to the track 501, the stirring pin 701 is fixedly connected to the suspension rod 7, and when the unbalanced load driving member 5 drives the track 501 to rotate, the stirring pin 701 can be driven to drive the suspension rod 7 to move.
Referring to fig. 1 to 7, in addition, a sliding rod 703 is disposed in the suspension rod 7 of the present invention, the sliding rod 703 can slide axially relative to the suspension rod 7 but cannot rotate radially, an elastic member 706 is disposed between the sliding rod 703 and the suspension rod 7, a hook 705 is fixedly connected to the suspension rod 7, a blocking piece 704 is disposed on the hook 705, and the blocking piece 704 can be abutted against the lifting plate 2; the sliding groove 702 is composed of a horizontal groove and a rotary groove, and the limiting pin 203 can drive the hanging rod 7 to rotate by 90 degrees when sliding in the sliding groove 702;
The specific implementation process comprises the following steps: when the rail 501 drives the hanging rod 7 to move, initially, the limiting pin 203 slides in the horizontal groove, the hanging rod 7 drives the sliding rod 703 to move towards the direction of the offset load frame 6, when the hook 705 moves to the lower part of the side hanging rod 601, the baffle plate 704 is abutted with the lifting plate 2, the hook 705 stops moving, the hanging rod 7 continues moving, at the moment, the elastic piece 706 is forced to shrink, the limiting pin 203 moves in the rotary groove and rotates when driving the hanging rod 7 to move, the sliding rod 7 rotates by 90 degrees, and a flat key is arranged between the hanging rod 7 and the sliding rod 703 to limit, so that the sliding rod 703 can axially slide relative to the hanging rod 7 but not radially rotate; the hanging rod 7 drives the hook 705 to rotate 90 degrees and is abutted with the side hanging rod 601, so that the secondary gravity block 602 can be driven to move upwards.
Referring to fig. 1 to 7, further, the adjusting set of the present invention includes a secondary driving member 408 fixedly connected to the frame 1, a magnetic block 407 disposed at an output end of the secondary driving member 408, a stop collar 406 clamped to the magnetic block 407, and a bearing block 4 sleeved outside the stop collar 406, wherein the secondary driving member 408 drives the magnetic block 407 to move up and down, the bearing block 4 is disposed at an output end of the primary driving member 402, and the primary driving member 402 drives the bearing block 4 to move up and down, and the magnetic block 407 is adsorbed to the bearing block 4; the limiting sleeve 406 is arranged at the output end of the telescopic member 409, and the telescopic member 409 drives the limiting sleeve 406 to rotate.
Referring to fig. 1 to 7, preferably, the output end of the auxiliary driving member 408 of the present invention is provided with a screw 412, the screw 412 is rotatably connected to a lower supporting block 414, a magnetic block 407 is screwed on the screw 412, the stop collar 406 is sleeved outside the screw 412, the stop collar 406 is rotatably connected to an upper supporting plate, the bottom of the stop collar 406 is provided with a driving wheel 411, the driving wheel 411 is meshed with a rack 410, and the rack 410 is provided at the output end of a telescopic member 409;
The specific implementation process comprises the following steps: the auxiliary driving piece 408 is started to drive the screw rod 412 to rotate, the magnetic block 407 is clamped with the limiting sleeve 406, the magnetic block 407 can be prevented from rotating, the screw rod 412 is ensured to drive the magnetic block 407 to move upwards, the magnetic block 407 is adsorbed by the bearing block 4 to drive the bearing block 4 to move downwards, at the moment, the plurality of main gravity blocks 3 are provided with the traction plates 301, the traction plates 301 are provided with the bearing holes 302 matched with the bearing block 4, and simultaneously, when the bearing block 4 moves downwards, the main driving piece 402 drives the two rollers 404 to release the bearing rope 401; the magnetic fast drives the bearing block 4 to move downwards to a set position, the telescopic piece 409 is started, the telescopic piece 409 drives the rack moving plate to drive the driving wheel 411 to rotate, the driving wheel 411 drives the magnetic block 407 to rotate through the limiting sleeve 406, the magnetic block 407 drives the bearing block 4 to rotate, at the moment, the main driving piece 402 drives the two rollers 404 to rotate reversely, the bearing rope 401 is rolled up, the set main gravity block 3 can be locked, and the lifting plate 2 is ensured to drive the set main gravity block 3 to move upwards; and meanwhile, compared with the structure of adjusting the number of the main gravity blocks 3 by bolts, the stability is improved, and the equipment space is reduced.
Referring to fig. 1 to 7, preferably, a main driving member 402 of the present invention is fixedly connected to a lifting plate 2, an output end of the main driving member 402 is provided with a driving wheel 405 and an idle wheel 403 which are meshed with each other, the driving wheel 405 and the idle wheel 403 are respectively fixedly connected to a roller 404, two bearing ropes 401 are wound on the two rollers 404, the two bearing ropes 401 are fixedly connected to a bearing block 4, a side hanging rod 601 is fixedly connected to a secondary gravity block 602, the side hanging rod 601 is abutted to a hook 705, and the secondary gravity block 602 can be driven to move by the hook 705.
Working principle: a hanging mechanism of a lifting mechanism of a tractor is hung on a lifting rod 202, a traction rope 201 is arranged below the lifting rod 202, the traction rope 201 is connected with a lifting plate 2, and a plurality of main gravity blocks 3 are arranged below the lifting plate 2;
When the number of the main gravity blocks 3 is regulated, the auxiliary driving piece 408 drives the screw 412 to drive the magnetic blocks 407 to move upwards, the magnetic blocks 407 are adsorbed with the bearing blocks 4, the auxiliary driving piece 408 drives the magnetic blocks 407 to drive the bearing blocks 4 to move downwards, when the number of the main gravity blocks 3 is set, the telescopic piece 409 is started, the rack is driven to drive the driving wheel 411 to rotate, the driving wheel 411 controls the magnetic blocks 407 to rotate through the limiting sleeve 406, at the moment, the main driving piece 402 drives the two rollers 404 to retract the bearing ropes 401, the bearing blocks 4 are ensured to be abutted against the traction plates 301, and when a tractor is used for lifting test, the main gravity blocks 3 can be regulated according to different types of tractors; and the two sides of the lifting plate 2 are provided with symmetrically arranged adjusting groups;
When the simulation unbalanced load test is performed, the unbalanced load driving piece 5 is started, the unbalanced load driving piece 5 controls the track 501 to rotate, the track 501 drives the hanging rod 7 to move through the toggle pin 701, the hanging rod 7 drives the sliding rod 703 to move, when the baffle 704 is abutted to the lifting plate 2, the hanging rod 7 continues to move, the limiting pin 203 slides in the sliding groove 702, the hanging rod 7 is driven to drive the sliding rod 703 to rotate, the sliding rod 703 drives the hook 705 to rotate, the hook 705 is abutted to the side hanging rod 601, and when the lifting plate 2 is ensured to move upwards, the secondary gravity block 602 is driven to move upwards, so that the unbalanced load simulation test is realized.
In summary, the present invention provides a tractor lifting system test platform, including: a frame; the lifting plate is arranged in the frame, a traction piece is arranged on the lifting plate, the traction piece comprises a traction rope and a lifting rod, the lifting rod can be hung on a lifting device of the tractor, and a lifting system of the tractor is tested; the adjusting groups can control the main gravity blocks with different numbers to move along with the lifting plate; the unbalanced load group comprises an unbalanced load driving piece fixedly connected to the lifting plate, a hanging rod arranged at the output end of the driving piece and a hook rotating synchronously with the hanging rod, wherein the unbalanced load driving piece drives the hanging rod to move in the lifting plate, a sliding groove is formed in the hanging rod, and a limiting pin matched with the sliding groove is arranged on the lifting plate; the secondary gravity block is arranged at the output end of the hook, and the hook drives the secondary gravity block to move up and down; the mechanical lifting mechanism is adopted, so that the condition of suspending the mechanical mechanism can be more attached to the actual use of the tractor, the test result is more accurate, and the high-quality delivery of the tractor is ensured; the lifting load condition can be adjusted through the adjustment group, and the tractor can be suitable for tractors of different types; the device can simulate the condition of unbalanced weight on one side of a structure hung on the tractor through the unbalanced load group, and additionally, abnormal condition simulation experiment working conditions are added, so that the lifting test diversity and the maximum fitting of the actual use condition of the tractor are ensured.
Of course, the present invention is capable of other various embodiments and its several details are capable of modification and variation in light of the present invention, as will be apparent to those skilled in the art, without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (5)
1. A tractor lifting system test platform, comprising: a frame;
the lifting plate is arranged in the frame and provided with a traction piece;
the adjusting groups can control the main gravity blocks with different numbers to move along with the lifting plate;
The unbalanced load group comprises an unbalanced load driving piece fixedly connected to the lifting plate, a hanging rod arranged at the output end of the driving piece and a hook rotating synchronously with the hanging rod, wherein the unbalanced load driving piece drives the hanging rod to move in the lifting plate, a sliding groove is formed in the hanging rod, and a limiting pin matched with the sliding groove is arranged on the lifting plate;
The secondary gravity block is arranged at the output end of the hook, and the hook drives the secondary gravity block to move up and down;
The adjusting group comprises an auxiliary driving piece fixedly connected to the frame, a magnetic block arranged at the output end of the auxiliary driving piece, a limiting sleeve clamped on the magnetic block and a bearing block sleeved outside the limiting sleeve, wherein the auxiliary driving piece drives the magnetic block to move up and down, the bearing block is arranged at the output end of the main driving piece and drives the bearing block to move up and down, and the magnetic block is adsorbed with the bearing block; the limiting sleeve is arranged at the output end of the telescopic piece and the telescopic piece drives the limiting sleeve to rotate;
The output end of the auxiliary driving piece is provided with a screw rod which is rotationally connected with the lower supporting block, the screw rod is connected with a magnetic block in a screwed manner, the limiting sleeve is sleeved outside the screw rod, the limiting sleeve is rotationally connected with the upper supporting plate, the bottom of the limiting sleeve is provided with a driving wheel, the driving wheel is meshed with a rack, and the rack is arranged at the output end of the telescopic piece;
The main driving piece is fixedly connected to the lifting plate, the output end of the main driving piece is provided with a driving wheel and an idler wheel which are meshed with each other, the driving wheel and the idler wheel are fixedly connected to a roller respectively, the two rollers are wound with bearing ropes, and the two bearing ropes are fixedly connected to the bearing block.
2. The tractor lifting system test platform of claim 1, wherein the output end of the unbalanced load driving member is provided with a track, and a toggle pin is slidably connected to the track, and the toggle pin is fixedly connected to the suspension rod.
3. The test platform of a tractor lifting system according to claim 2, wherein a sliding rod is arranged in the hanging rod, the sliding rod can axially slide but cannot radially rotate relative to the hanging rod, an elastic piece is arranged between the sliding rod and the hanging rod, a hook is fixedly connected to the hanging rod, and a blocking piece is arranged on the hook.
4. The tractor lifting system test platform of claim 1, wherein the chute is comprised of a horizontal slot and a rotational slot, and the stop pin is capable of driving the hanger bar to rotate 90 degrees when slid within the chute.
5. The tractor lifting system test platform of claim 1, wherein the secondary gravity block is arranged in a unbalanced load frame, and a side hanging rod is fixedly connected to the secondary gravity block and is abutted to the hook.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202411008114.0A CN118533513B (en) | 2024-07-26 | 2024-07-26 | Tractor lifting system test platform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202411008114.0A CN118533513B (en) | 2024-07-26 | 2024-07-26 | Tractor lifting system test platform |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN118533513A CN118533513A (en) | 2024-08-23 |
| CN118533513B true CN118533513B (en) | 2024-10-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202411008114.0A Active CN118533513B (en) | 2024-07-26 | 2024-07-26 | Tractor lifting system test platform |
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| Country | Link |
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| CN (1) | CN118533513B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN212531987U (en) * | 2020-05-21 | 2021-02-12 | 魏斌 | Rotatable lifting appliance of bridge crane |
| CN216349566U (en) * | 2021-10-27 | 2022-04-19 | 苏州市希格曼智能制造有限公司 | Unbalance loading testing arrangement suitable for slewing bearing |
| CN116857263A (en) * | 2023-07-14 | 2023-10-10 | 山东弘宇农机股份有限公司 | Final inspection test device for hydraulic lifting system of tractor |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030060344A1 (en) * | 2001-08-31 | 2003-03-27 | Varner David | Magnetically anchored, quick release pin |
| CN115650019A (en) * | 2022-09-21 | 2023-01-31 | 日立电梯（中国）有限公司 | A fluid-based self-balancing elevator system |
-
2024
- 2024-07-26 CN CN202411008114.0A patent/CN118533513B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN212531987U (en) * | 2020-05-21 | 2021-02-12 | 魏斌 | Rotatable lifting appliance of bridge crane |
| CN216349566U (en) * | 2021-10-27 | 2022-04-19 | 苏州市希格曼智能制造有限公司 | Unbalance loading testing arrangement suitable for slewing bearing |
| CN116857263A (en) * | 2023-07-14 | 2023-10-10 | 山东弘宇农机股份有限公司 | Final inspection test device for hydraulic lifting system of tractor |
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| CN118533513A (en) | 2024-08-23 |
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