CN112345144B - Jack load testing device and testing method thereof - Google Patents
Jack load testing device and testing method thereof Download PDFInfo
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- CN112345144B CN112345144B CN202011324900.3A CN202011324900A CN112345144B CN 112345144 B CN112345144 B CN 112345144B CN 202011324900 A CN202011324900 A CN 202011324900A CN 112345144 B CN112345144 B CN 112345144B
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- rod
- hinged
- pull rods
- plate
- support
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25H—WORKSHOP EQUIPMENT, e.g. FOR MARKING-OUT WORK; STORAGE MEANS FOR WORKSHOPS
- B25H1/00—Work benches; Portable stands or supports for positioning portable tools or work to be operated on thereby
- B25H1/06—Work benches; Portable stands or supports for positioning portable tools or work to be operated on thereby of trestle type
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25H—WORKSHOP EQUIPMENT, e.g. FOR MARKING-OUT WORK; STORAGE MEANS FOR WORKSHOPS
- B25H1/00—Work benches; Portable stands or supports for positioning portable tools or work to be operated on thereby
- B25H1/14—Work benches; Portable stands or supports for positioning portable tools or work to be operated on thereby with provision for adjusting the bench top
- B25H1/16—Work benches; Portable stands or supports for positioning portable tools or work to be operated on thereby with provision for adjusting the bench top in height
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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
- G01M13/00—Testing of machine parts
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a jack load testing device, which belongs to the technical field of load testing devices and is characterized in that: the device comprises an upper support, a middle support and a lower support, wherein the upper support comprises upper pull rods, a fixed pressing plate, a connecting ring and a top plate, the connecting ring is hinged with the lower ends of the plurality of upper pull rods, the upper ends of the upper pull rods are hinged with the lower ends of the fixed pressing plate, the top plate is placed at the lower end of the fixed pressing plate, and the lower end of the top plate is provided with a pressure sensor; the middle support comprises a plurality of sections of middle pull rods, connecting blocks and a telescopic support assembly, the plurality of sections of middle pull rods are sequentially hinged, the connecting rings are hinged with the three groups of middle pull rods, the middle pull rod at the upper end is hinged with the connecting rings, the middle pull rod at the lower end is hinged with the connecting blocks, and the three connecting blocks are sequentially connected through the telescopic support assembly; the lower support comprises foot pull rods and foot plates, and the two sides of each foot plate are hinged to the lower ends of the two foot pull rods respectively. Compared with the prior art have simple structure, the characteristics of convenient transport.
Description
Technical Field
The invention relates to the technical field of load testing devices, in particular to a jack load testing device and a testing method thereof.
Background
The aircraft jack has a large volume, the existing load testing device is basically in a portal frame type, the whole structure is heavy, the total weight is about 3T, the transportation is difficult, and the requirements of field testing in different places can not be met. The existing jack load testing device can only test jacks of specified model sizes, and when the jacks of different model sizes need to be tested, the testing devices of different models need to be replaced, so that the process is complicated, inflexible and low in efficiency.
Disclosure of Invention
The invention aims to provide a jack load testing device and a testing method thereof aiming at the defects of the prior art, and the purposes of wide application range and convenience in transportation are achieved.
The invention provides a jack load testing device, which is characterized in that: the device comprises an upper bracket, a middle bracket and a lower bracket, wherein the upper bracket, the middle bracket and the lower bracket are sequentially connected; the upper support comprises upper pull rods, a fixed pressing plate, a connecting ring and a pressure sensor, wherein the connecting ring is hinged with the lower ends of the upper pull rods, the upper ends of the upper pull rods are hinged with the lower ends of the fixed pressing plate and are placed at the lower end of the fixed pressing plate, and the lower end of the upper support is provided with the pressure sensor; the middle support comprises a plurality of sections of middle pull rods, connecting blocks and a telescopic support assembly, the plurality of sections of middle pull rods are sequentially hinged, the connecting rings are hinged with the three groups of middle pull rods, the middle pull rod at the upper end is hinged with the connecting rings, the middle pull rod at the lower end is hinged with the connecting blocks, and the three connecting blocks are sequentially connected through the telescopic support assembly; the lower support comprises foot pull rods and foot plates, the two sides of each foot plate are respectively hinged with the lower ends of the two foot pull rods, and the upper ends of the two foot pull rods are coaxially connected and hinged with the connecting blocks.
The fixed pressing plate is L-shaped and is formed by vertically connecting a vertical plate and a horizontal plate.
The telescopic support assembly comprises an outer rod, an inner rod and racks, wherein the outer rod is provided with a cavity with two open ends, the cavity of the outer rod is internally provided with two symmetrically distributed inner rods, the cavity of the outer rod is internally provided with a gear, the gear is in rotating fit with the inner wall of the cavity of the outer rod, the upper end and the lower end of the gear are respectively provided with one rack, the two racks are vertically and symmetrically distributed in the cavity of the outer rod, the two racks are respectively meshed with the gear, and the two racks are respectively connected with the inner end of one inner rod; a locking device is arranged between the outer rod and the inner rod.
The locking device comprises a connecting plate, positioning shafts and a screw rod, the two ends of the connecting plate are respectively provided with the positioning shafts which are symmetrically installed, the middle position of the connecting plate is provided with a threaded through hole, the middle position of the outer wall of the outer rod is in running fit with one end of the screw rod, the screw rod is in threaded fit with the threaded through hole of the connecting plate, the inner rod is provided with a row of uniformly distributed positioning holes, the two ends of the outer rod are respectively provided with a positioning through hole, and the positioning shafts are inserted into the positioning through holes of the outer rod.
A jack load test method is characterized in that: the method comprises the following steps:
step one, adjusting the height of a jack load testing device: according to the size specification of the test jack, the number of the middle pull rods is adjusted, so that the middle pull rods are connected through the pin shafts in sequence, and the height of the jack load test device is adjusted.
Step two, adjusting the width of the jack load testing device: through adjusting the length of the telescopic support assembly, the width of the jack load testing device is changed, the inner rod at one end of the telescopic support assembly is pulled to move, the inner rod drives the rack to move, the rack drives the gear to rotate, the gear drives another inner rod to move through another rack, so that the two inner rods symmetrically move in opposite directions.
Step three, mounting a jack: three support legs of the jack are respectively placed on the foot plates, so that the top disc of the jack is pressed against the lower end of the jack, the uppermost middle pull rod of the multi-section middle pull rod is hinged with the connecting ring through the pin shaft, the uppermost middle pull rod is pressed against the position of the horizontal plate of the fixed pressing plate, and the horizontal plate of the fixed pressing plate is placed on the upper end of the horizontal plate.
Step four, testing the load of the jack: the jack is started to load the jack, and the pressure sensor transmits the pressure value to the output.
Compared with the prior art, the invention has the following outstanding beneficial effects:
1. the device can change the height of the device by increasing or decreasing the number of the middle pull rods of the middle bracket and change the width of the device by changing the length of the telescopic support assembly, so that jacks of different models and sizes can be tested, and the adaptability of the device is improved;
2. the device is provided with three groups of upper pull rods, middle pull rods, foot pull rods and foot plates respectively, the force generated by the jack can be transmitted to the fixed pressing plate, the upper pull rods, the connecting rings, the middle pull rods, the connecting blocks, the foot pull rods and the foot plates in sequence in a dispersing way through the top plate, and the bottom of the device can be prevented from being deformed due to uneven stress.
3. The main body of the device consists of an upper pull rod, a middle pull rod, a foot pull rod and a foot plate, and has simple and light structure and convenient transportation.
Drawings
Fig. 1 is a schematic structural view of the present invention.
FIG. 2 is a schematic view of the structure of the telescoping support assembly portion of the present invention.
FIG. 3 is a schematic view of the internal structure of the telescoping support assembly portion of the present invention.
Fig. 4 is a schematic view of the assembly of the present invention with a jack.
Detailed Description
The invention is further described with reference to the drawings and the detailed description.
As shown in fig. 1, the present invention includes an upper bracket 1, a middle bracket 2, and a lower bracket 3.
The upper support 1, the middle support 2 and the lower support 3 are connected in sequence.
The upper support 1 comprises an upper pull rod 14, a fixed pressing plate 13, a connecting ring 15 and a top plate 11, wherein the connecting ring 15 is hinged with the lower ends of a plurality of upper pull rods 14 which are uniformly distributed in a circumferential shape, the upper end of each upper pull rod 14 is hinged with the lower end of the corresponding fixed pressing plate 13, the corresponding fixed pressing plate 13 is in an L shape and is formed by vertically connecting a vertical plate and a horizontal plate, and the top plate 11 is placed at the lower end of the horizontal plate of the corresponding fixed pressing plate 13.
And a pressure sensor 12 is installed at the lower end of the top plate 11, and the pressure sensor 12 is connected with a display device through a circuit. The circuit is the prior art, and the specific structure thereof is not described in detail.
The middle support 2 comprises a plurality of sections of middle pull rods 21, a connecting block 23 and a telescopic support assembly 22, the plurality of sections of middle pull rods 21 are sequentially hinged, and the hinging mode is as follows: through holes are respectively arranged at two ends of the middle pull rod 21, and two adjacent middle pull rods 21 are hinged through a pin shaft. The connecting rings 15 are hinged with the three groups of middle pull rods 21, the middle pull rod 21 positioned at the uppermost end is hinged with the connecting rings 15, the middle pull rod 21 positioned at the lowermost end is hinged with the connecting blocks 23, and the three connecting blocks 23 are connected through the telescopic support assembly 22 in sequence to form an equilateral triangle support.
In an optimized scheme, the connecting block 23 is hinged with the telescopic support assembly 22.
As shown in fig. 2 and 3, the telescopic support assembly 22 includes an outer rod 221, an inner rod 222, and racks 223, the outer rod 221 has a cavity with two open ends, two symmetrically distributed inner rods 222 are respectively disposed in the cavity of the outer rod 221, a gear 224 is mounted in the middle of the cavity of the outer rod 221, the gear 224 is rotatably fitted with the inner wall of the cavity of the outer rod 221 through a shaft, two racks 223 are respectively disposed at the upper and lower ends of the gear 224, the two racks 223 are vertically symmetrically distributed in the cavity of the outer rod 221, the two racks 223 are respectively engaged with the gear 224, and the two racks 223 are respectively connected with the inner end of one inner rod 222.
The inner rod 222 is provided with a slot, and the rack 223 is inserted into the slot of the inner rod 222.
The outer rod 221 is provided with a locking device 24 capable of fixing the outer rod 221 and the inner rod 222, the locking device 24 comprises a connecting plate 242, a positioning shaft 241 and a screw rod 244, two ends of the connecting plate 242 are respectively provided with the positioning shafts 241 which are symmetrically installed, the middle position of the connecting plate is provided with a threaded through hole, the middle position of the outer wall of the outer rod 221 is in running fit with one end of the screw rod 244, the other end of the screw rod 244 is connected with a rocker 243, the screw rod 244 is in threaded fit with the threaded through hole of the connecting plate 242, the inner rod 222 is provided with a row of uniformly distributed positioning holes, two ends of the outer rod 221 are respectively provided with a positioning through hole, and the positioning shaft 241 is inserted into the positioning through hole of the outer rod 221. When the screw 244 is rotated, the screw 244 can drive the connecting plate 242 to move, and the connecting plate 242 drives the positioning shaft 241 to move, so that the positioning shaft 241 is inserted into the positioning hole of the inner rod 222.
The connecting block 23 is fixedly connected with the outer ends of the two inner rods 222 respectively, the two inner rods 222 are distributed with an included angle of 60 degrees, and the inner rods 222 are matched with the connecting block 23 through bolts. When the locking device 24 is opened and one of the coupling blocks 23 is pulled, the three telescopic support assemblies 22 can be simultaneously telescopic. Thereby changing the side length of the equilateral triangle support.
In an optimized scheme, two ends of the outer rod 221 are respectively provided with an observation hole, and the distance between the observation hole and the positioning through hole is a multiple of the distance between two adjacent positioning holes of the inner rod 222.
The lower bracket 3 comprises foot pull rods 31 and foot plates 32, two sides of the foot plates 32 are respectively hinged with the lower ends of the two foot pull rods 31, and the upper ends of the two foot pull rods 31 are coaxially connected and hinged with the connecting blocks 23.
As shown in fig. 4, the foot plate 32 is provided with a positioning ring 33, and when in use, the three foot supports of the jack are respectively placed in the circular holes of the positioning ring 33 for positioning.
A jack load testing method comprises the following steps:
step one, adjusting the height of a jack load testing device: and adjusting the number of the middle pull rods 21 according to the size specification of the test jack, so that the middle pull rods 21 are connected through the pin shafts in sequence, and the height of the jack load test device is adjusted.
Step two, adjusting the width of the jack load testing device: one of the coupling blocks 23 is pulled, the coupling block 23 simultaneously drives one inner rod 222 of the two telescopic support assemblies 22 to move, the inner rod 222 drives the rack 223 to move, the rack 223 drives the gear 224 to rotate, and the gear 224 drives the other inner rod 222 to move through the other rack 223, so that the two inner rods 222 symmetrically move in opposite directions. When the connecting block 23 drives the two telescopic support assemblies 22 connected with the connecting block 23 to extend and retract, the two telescopic support assemblies 22 simultaneously drive the telescopic support assemblies 22 opposite to the connecting block 23 to synchronously move, when the telescopic support assemblies 22 reach the required length, the screw rod 244 is rotated, the screw rod 244 drives the connecting plate 242 to move, the connecting plate 242 drives the positioning shaft 241 to move, the positioning shaft 241 is inserted into the positioning hole of the inner rod 222, and the inner rod 222 and the outer rod 221 of the telescopic support assemblies 22 are fixed to meet the requirements of the jack to be tested.
Step three, mounting a jack: three support legs of the jack are respectively placed on the foot plates 32, so that the top plate of the jack is pressed against the lower end of the top plate 11, the uppermost middle pull rod 21 of the multiple sections of middle pull rods 21 is hinged with the connecting ring 15 through a pin shaft, the top plate 11 is pressed against the position of the horizontal plate of the fixed pressing plate 13, and the horizontal plate of the fixed pressing plate 13 is placed at the upper end of the top plate 11.
Step four, testing the load of the jack: the jack is started to load the jack, the pressure sensor 12 transmits pressure values to the output, the pressure of the jack is transmitted to the fixed pressure plate 13, the upper pull rod 14, the coupling ring 15, the middle pull rod 21, the coupling block 23 from the top plate 11 in sequence, and finally the force is dispersed to the three foot plates 32 through the foot pull rods 31.
It should be noted that while the invention has been described in detail with respect to specific embodiments thereof, it will be apparent to those skilled in the art that various obvious changes can be made therein without departing from the spirit and scope of the invention.
Claims (3)
1. A jack load testing device comprises an upper support (1), a middle support (2) and a lower support (3), wherein the upper support (1), the middle support (2) and the lower support (3) are sequentially connected; the method is characterized in that: the upper support (1) comprises upper pull rods (14), a fixed pressing plate (13), a connecting ring (15) and a top plate (11), wherein the connecting ring (15) is hinged with the lower ends of the upper pull rods (14), the upper end of each upper pull rod (14) is hinged with the lower end of the fixed pressing plate (13), the top plate (11) is placed at the lower end of the fixed pressing plate (13), and the lower end of the top plate (11) is provided with a pressure sensor (12); the middle support (2) comprises a plurality of sections of middle pull rods (21), connecting blocks (23) and a telescopic support assembly (22), the plurality of sections of middle pull rods (21) are sequentially hinged, connecting rings (15) are hinged with the three groups of middle pull rods (21), the middle pull rod (21) at the upper end is hinged with the connecting rings (15), the middle pull rod (21) at the lower end is hinged with the connecting blocks (23), and the three connecting blocks (23) are sequentially connected through the telescopic support assembly (22); the telescopic support assembly (22) comprises an outer rod (221) and an inner rod (222), the outer rod (221) is provided with a cavity with two open ends, two symmetrically distributed inner rods (222) are respectively arranged in the cavity of the outer rod (221), the connecting block (23) is respectively fixedly connected with the outer ends of the two inner rods (222), the two inner rods (222) are distributed with an included angle of 60 degrees, and the inner rods (222) are matched with the connecting block (23) through bolts; a gear (224) is installed in the cavity of the outer rod (221), the gear (224) is in running fit with the inner wall of the cavity of the outer rod (221), racks (223) are respectively arranged at the upper end and the lower end of the gear (224), the two racks (223) are symmetrically distributed in the cavity of the outer rod (221) up and down, the two racks (223) are respectively meshed with the gear (224), and the two racks (223) are respectively connected with the inner end of an inner rod (222); a locking device (24) is arranged between the outer rod (221) and the inner rod (222); the lower support (3) comprises foot pull rods (31) and foot plates (32), two sides of each foot plate (32) are hinged to the lower ends of the two foot pull rods (31), and the upper ends of the two foot pull rods (31) are coaxially connected and hinged to the connecting block (23).
2. A jack load testing device according to claim 1, wherein: the fixed pressing plate (13) is L-shaped and is formed by vertically connecting a vertical plate and a horizontal plate.
3. A jack load testing device according to claim 1, wherein: locking device (24) are including connecting plate (242), location axle (241) and screw rod (244), the both ends of connecting plate (242) are equipped with location axle (241) of symmetry installation respectively, the intermediate position is equipped with the screw thread through-hole, the outer wall intermediate position of outer pole (221) and the one end normal running fit of screw rod (244), screw rod (244) and the screw thread through-hole screw-thread fit of connecting plate (242), be equipped with one row of evenly distributed's locating hole on interior pole (222), the both ends of outer pole (221) are equipped with a location through-hole respectively, location axle (241) are inserted in the location through-hole of outer pole (221).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011324900.3A CN112345144B (en) | 2020-11-24 | 2020-11-24 | Jack load testing device and testing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011324900.3A CN112345144B (en) | 2020-11-24 | 2020-11-24 | Jack load testing device and testing method thereof |
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| Publication Number | Publication Date |
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| CN112345144A CN112345144A (en) | 2021-02-09 |
| CN112345144B true CN112345144B (en) | 2022-04-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011324900.3A Active CN112345144B (en) | 2020-11-24 | 2020-11-24 | Jack load testing device and testing method thereof |
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| Country | Link |
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| CN (1) | CN112345144B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117213824B (en) * | 2023-10-11 | 2024-04-02 | 江苏宇力机电设备集团有限公司 | Jack performance test equipment |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4529975A (en) * | 1981-11-06 | 1985-07-16 | Michael Hung | Separate overload detecting and warning system for hydraulic jack |
| CN102744547A (en) * | 2012-07-25 | 2012-10-24 | 济南轨道交通装备有限责任公司 | Pressing tool for assembling truck body |
| CN207860820U (en) * | 2018-01-05 | 2018-09-14 | 上海智能制造系统创新中心有限公司 | A kind of adjustable flexible support plate holder of size |
| CN209014251U (en) * | 2018-09-26 | 2019-06-21 | 广州飞机维修工程有限公司 | A kind of jack for plane axletree pressure loading test device |
| CN209310657U (en) * | 2018-12-12 | 2019-08-27 | 江西国泰民爆集团股份有限公司 | A kind of demolition site surveillance device |
| CN110367788A (en) * | 2019-08-23 | 2019-10-25 | 温州吉鸿建筑信息科技有限公司 | A kind of anti-slip type clothes hanger based on capillary soft tube principle |
| CN209850804U (en) * | 2019-03-11 | 2019-12-27 | 杭州中德传动设备有限公司 | Puller device |
-
2020
- 2020-11-24 CN CN202011324900.3A patent/CN112345144B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4529975A (en) * | 1981-11-06 | 1985-07-16 | Michael Hung | Separate overload detecting and warning system for hydraulic jack |
| CN102744547A (en) * | 2012-07-25 | 2012-10-24 | 济南轨道交通装备有限责任公司 | Pressing tool for assembling truck body |
| CN207860820U (en) * | 2018-01-05 | 2018-09-14 | 上海智能制造系统创新中心有限公司 | A kind of adjustable flexible support plate holder of size |
| CN209014251U (en) * | 2018-09-26 | 2019-06-21 | 广州飞机维修工程有限公司 | A kind of jack for plane axletree pressure loading test device |
| CN209310657U (en) * | 2018-12-12 | 2019-08-27 | 江西国泰民爆集团股份有限公司 | A kind of demolition site surveillance device |
| CN209850804U (en) * | 2019-03-11 | 2019-12-27 | 杭州中德传动设备有限公司 | Puller device |
| CN110367788A (en) * | 2019-08-23 | 2019-10-25 | 温州吉鸿建筑信息科技有限公司 | A kind of anti-slip type clothes hanger based on capillary soft tube principle |
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| Publication number | Publication date |
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| CN112345144A (en) | 2021-02-09 |
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