CN211602725U - Shear type jack comprehensive test device - Google Patents
Shear type jack comprehensive test device Download PDFInfo
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- CN211602725U CN211602725U CN201922319847.7U CN201922319847U CN211602725U CN 211602725 U CN211602725 U CN 211602725U CN 201922319847 U CN201922319847 U CN 201922319847U CN 211602725 U CN211602725 U CN 211602725U
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Abstract
The utility model provides a scissor jack comprehensive test device, belonging to the jack manufacturing technical field, comprising an operation platform, a loading mechanism and a transmission mechanism; the operating platform is connected with a power element for providing torque, the table top is provided with a bearing table for supporting the scissor jack, and the bearing table is provided with a pressure sensor; the loading mechanism is arranged on the operating platform and used for applying pressure load to the scissor jack; one end of the transmission mechanism is connected with the power element, the other end of the transmission mechanism is used for being connected with a lifting screw rod of the scissor jack, and the transmission mechanism is used for continuously or intermittently transmitting torque to the lifting screw rod. The utility model provides a pair of shear type jack combined test device can carry out shear type jack's static load test, can also carry out shear type jack's dynamic load test, and experimental operation is simple, and the experimental data degree of accuracy is high to can judge whether shear type jack's bearing capacity accords with the design standard, satisfy the operation requirement.
Description
Technical Field
The utility model belongs to the technical field of the jack is made, more specifically say, relate to a shear formula jack combined test device.
Background
The scissor jack is a vehicle-mounted tool and is mainly used for temporarily maintaining a vehicle, and the scissor jack is lifted by manually rotating a screw rod of the scissor jack. In the design and development process of the scissor jack, a sample is required to be prefabricated generally, and the jacking capacity of the scissor jack is tested, so that whether a newly developed product meets the design and use requirements is determined, the test on the jacking capacity comprises a static load test mode and a dynamic load test mode, the mode adopted at present is that a heavy object is used for simulating the actual working condition, and the test is carried out by manually rotating a screw rod, the mode cannot collect linear data due to the limitation of the heavy object, the test accuracy is low, and particularly, the test data collection under the dynamic load working condition is more difficult.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a shear type jack combined test device aims at solving the problem of shear type jack's dynamic load test difficulty among the prior art.
In order to achieve the above object, the utility model adopts the following technical scheme: the utility model provides a shear jack combined test device includes:
the operating platform is connected with a power element for providing torque, a bearing platform for supporting the scissor jack is arranged on the table top, and a pressure sensor is arranged on the bearing platform;
the loading mechanism is arranged on the operating platform and used for applying pressure load to the scissor jack;
and one end of the transmission mechanism is connected with the power element, the other end of the transmission mechanism is used for being connected with a lifting screw rod of the scissor jack, and the transmission mechanism is used for continuously or intermittently transmitting torque to the lifting screw rod.
As another embodiment of the present application, a transmission mechanism includes:
one end of the first joint is connected with the power element, and the other end of the first joint is rotatably connected with a first connecting piece along an axial direction vertical to the first joint;
one end of the second joint is used for being connected with the lifting screw rod, and the other end of the second joint is rotatably connected with a second connecting piece along the axial direction vertical to the second joint;
one end of the telescopic assembly is rotationally connected with the first connecting piece along the axial direction perpendicular to the telescopic assembly, and the rotational axis is perpendicular to the rotational axis of the first connecting piece and the first joint; the other end of the second connector is rotationally connected with the second connector along the axial direction of the vertical telescopic component, and the rotational axial direction of the second connector is vertical to the rotational axial direction of the second connector.
As another embodiment of the present application, the first connecting member is a cross shaft, and the distances from the center to the four end surfaces of the first connecting member are equal, the first joint is rotatably connected to the two ends of the first connecting member on the same axis, and one end of the telescopic assembly is rotatably connected to the other two ends of the first connecting member.
As another embodiment of the application, the second connecting piece is a cross shaft, the distances from the four end faces of the second connecting piece to the center are equal, the second joint is rotatably connected with two ends of the second connecting piece on the same axis, and one end of the telescopic assembly is rotatably connected with the other two ends of the second connecting piece.
As another embodiment of the present application, a telescopic assembly includes:
one end of the sliding rod is rotatably connected with the first connecting piece;
one end of the sliding sleeve is rotatably connected with the second connecting piece, and the other end of the sliding sleeve is sleeved on the sliding rod and is in sliding connection with the sliding rod along the axial direction of the sliding rod.
As another embodiment of the application, the radial section of the sliding rod is a polygon, and the inner hole of the sliding sleeve is a polygon hole matched with the shape of the sliding rod.
As another embodiment of the present application, a loading mechanism includes:
the two upright columns are respectively vertically and upwards arranged on the table top of the operating platform at intervals;
the mounting plate is fixedly connected to the top ends of the two upright posts;
and the pressurizing cylinder is arranged on the mounting plate, and the cylinder rod end of the pressurizing cylinder downwards penetrates through the mounting plate and is used for being abutted against the top surface of the scissor jack.
As another embodiment of the application, the cylinder rod end of the pressurizing cylinder is provided with a sliding plate, and two ends of the sliding plate are respectively connected with the two upright posts in a sliding manner.
As another embodiment of this application, the lateral wall of slide is equipped with the pointer, is equipped with the scale the same with the extending direction of stand on operation platform's the mesa, and the pointer slides from top to bottom along the chi face scale of scale.
As another embodiment of the application, one end of the transmission mechanism, which is used for being connected with the lifting screw rod, is provided with a torque sensor.
The utility model provides a pair of shear type jack combined test device's beneficial effect lies in: compared with the prior art, the shear type jack comprehensive test device has the advantages that the shear type jack is placed on the bearing table, the loading mechanism is used for applying pressure to the shear type jack, and the pressure sensor is used for detecting the load pressure borne by the shear type jack, so that static load test data of the shear type jack are obtained;
after a loading mechanism applies a set load to the scissor jack, the power element is started, and the rotating torque of the power element is continuously transmitted to the lifting screw rod through the transmission mechanism, so that the scissor jack is driven to lift, and the data of the pressure sensor is recorded in real time, so that the linear dynamic load test data of the scissor jack can be obtained, the test process is convenient to operate, and the data acquisition is simple and accurate;
through analyzing the static load test data and the dynamic load test data and comparing the static load test data and the dynamic load test data with the design standard, whether the bearing capacity of the scissor jack meets the design standard or not can be determined, and the use requirement is met.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a scissor jack comprehensive test device according to an embodiment of the present invention;
fig. 2 is an exploded schematic view of a transmission mechanism according to an embodiment of the present invention.
In the figure: 1. an operating platform; 11. a bearing table; 2. a loading mechanism; 21. a column; 22. mounting a plate; 23. pressurizing a cylinder; 24. a slide plate; 241. a pointer; 3. a transmission mechanism; 31. a first joint; 311. a first connecting member; 32. a second joint; 321. a second connecting member; 33. a telescoping assembly; 331. a slide bar; 332. a sliding sleeve; 333. a polygonal hole; 4. a pressure sensor; 5. a graduated scale; 6. a torque sensor; 7. a scissor jack.
Detailed Description
In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, a comprehensive testing apparatus for a scissor jack according to the present invention will be described. The shear type jack comprehensive test device comprises an operation platform 1, a loading mechanism 2 and a transmission mechanism 3; the operating platform 1 is connected with a power element for providing torque, a bearing table 11 for supporting the scissor jack 7 is arranged on the table top, and a pressure sensor 4 is arranged on the bearing table 11; the loading mechanism 2 is arranged on the operating platform 1 and used for applying pressure load to the scissor jack 7; one end of the transmission mechanism 3 is connected with the power element, the other end of the transmission mechanism is used for being connected with a lifting screw rod of the scissor jack 7, and the transmission mechanism 3 is used for continuously or intermittently transmitting torque to the lifting screw rod.
The utility model provides a pair of shear type jack combined test device's using-way: it should be noted that the power element may be a speed reduction motor, a pneumatic or hydraulic motor, or other elements capable of providing a rotational force; the pressure sensor 4 can provide real-time pressure detection and carry out digital display through an electrically connected display screen.
When a static load test is carried out on the scissor jack 7, the scissor jack 7 is adjusted to a test height by rotating a lifting screw, the adjusted scissor jack 7 is placed on a bearing table 11, then a load is downwards applied to the top surface of the scissor jack 7 through a loading mechanism 2, a pressure value is detected in real time through a pressure sensor 4 on the bearing table 11, the loading is stopped when the pressure value reaches a target load value, a pressure maintaining test is carried out, and if the test value of the pressure sensor 4 does not change within a set time, the scissor jack 7 is not deformed, so that the static load design standard is met;
during a dynamic load test, the scissor jack 7 connects the transmission mechanism 3 with the lifting screw rod in an initial state (a folding state), then the loading mechanism 2 applies a set load value to the top surface of the scissor jack 7 downwards, then the power element is started, the torque of the power element is continuously transmitted to the lifting screw rod through the transmission mechanism 3, the transmission screw rod rotates to drive the scissor jack 7 to overcome the load applied by the loading mechanism 2 for jacking, the pressure sensor 4 detects and records the pressure data in real time until the scissor jack 7 jacks to the highest point, so that dynamic load test data of the scissor jack 7 are obtained, and if the test data are within a design standard range, the scissor jack 7 meets the dynamic load design standard and the use requirement.
Compared with the prior art, the scissor jack 7 is placed on the bearing table 11, the loading mechanism 2 is used for applying pressure to the scissor jack 7, and the pressure sensor 4 is used for detecting the load pressure borne by the scissor jack 7, so that static load test data of the scissor jack 7 are obtained;
after the loading mechanism 2 applies a set load to the scissor jack 7, the power element is started, the rotating torque of the power element is continuously transmitted to the lifting screw rod through the transmission mechanism 3, so that the scissor jack 7 is driven to lift, and the data of the pressure sensor 4 is recorded in real time, so that the linear dynamic load test data of the scissor jack 7 can be obtained, the test process is convenient to operate, and the data acquisition is simple and accurate;
through analysis of static load test data and dynamic load test data and comparison with design standards, whether the bearing capacity of the scissor jack 7 meets the design standards or not and whether the use requirements are met or not can be determined.
As a specific embodiment of the scissor jack comprehensive test device provided by the present invention, please refer to fig. 2, the transmission mechanism 3 includes a first joint 31, a second joint 32 and a telescopic assembly 33; one end of the first joint 31 is connected with the power element, and the other end is rotatably connected with a first connecting piece 311 along an axial direction perpendicular to the first joint 31; one end of the second joint 32 is used for connecting with the lifting screw, and the other end is rotatably connected with a second connecting piece 321 along the axial direction vertical to the second joint 32; one end of the telescopic assembly 33 is rotatably connected with the first connecting piece 311 along the axial direction perpendicular to the telescopic assembly 33, and the rotating axial direction is perpendicular to the rotating axial direction of the first connecting piece 311 and the first joint 31; the other end is rotatably connected to the second connecting member 321 along the axial direction of the vertical telescopic assembly 33, and the rotating axial direction is perpendicular to the rotating axial direction of the second connecting member 321 and the second joint 32.
It should be noted that, during the dynamic load test of the scissor jack 7, the height of the lifting screw changes continuously, and the relative distance between the lifting screw and the power element also changes continuously.
The first joint 31 and the telescopic assembly 33 are connected through a first connecting piece 311, and have two rotation axes which are perpendicular to each other, so that the transmission of the torque of the broken line between the first joint 31 and the telescopic assembly 33 can be ensured; similarly, the second joint 32 and the telescopic assembly 33 are connected through a second connecting piece 321, and have two rotation axes perpendicular to each other, so that the transmission of the torque of the broken line between the second joint 32 and the telescopic assembly 33 can be ensured; through the connection transition of the first connecting piece 311 and the second connecting piece 321, the broken line torque transmission function of the transmission mechanism 3 is realized, and the length change of the transmission mechanism 3 can be realized by matching with the telescopic function of the telescopic component 33; therefore, the torque transmission requirement of the scissor jack 7 in the dynamic load test process can be met through the transmission assembly, and the transmission is stable and reliable.
In this embodiment, as a specific implementation manner, please refer to fig. 2, the first connecting member 311 is a cross shaft, and distances from four end surfaces of the first connecting member 311 to the center are equal, the first joint 31 is rotatably connected to two ends of the first connecting member 311 on the same axis, and one end of the telescopic assembly 33 is rotatably connected to the other two ends of the first connecting member 311.
The second connecting member 321 is a cross shaft, the distances from the center to the four end surfaces of the second connecting member 321 are equal, the second joint 32 is rotatably connected with two ends of the second connecting member 321 on the same axis, and one end of the telescopic assembly 33 is rotatably connected with the other two ends of the second connecting member 321.
The distances from the four end surfaces of the cross shaft to the center are equal, so that the intersection point of the rotation axis of the first connecting piece 311 on the first joint 31 and the rotation axis of the first connecting piece 311 on the telescopic assembly 33 is positioned at the center of the first connecting piece 311, namely the cross shaft, and the transmission of torque can be ensured under the condition that the axis directions of the telescopic assembly 33 and the first joint 31 have a certain included angle, so that the polygonal line transmission of the torque is realized, the polygonal line torque transmission principle of the second connecting piece 321 is the same as that of the first connecting piece 311, so that the first joint 31 and the second joint 32 can be respectively connected with the two ends of the telescopic assembly 33 through the cross shaft to transmit the torque under the condition that the axes are parallel but different to coincide, the structure is simple and reliable, and the manufacturing cost is low.
As a specific implementation manner of the embodiment of the present invention, please refer to fig. 2, the telescopic assembly 33 includes a sliding rod 331 and a sliding sleeve 332; wherein, one end of the sliding rod 331 is rotatably connected with the first connecting piece 311; one end of the sliding sleeve 332 is rotatably connected to the second connecting element 321, and the other end thereof is sleeved on the sliding rod 331 and is slidably connected to the sliding rod 331 along the axial direction of the sliding rod 331.
The sliding rod 331 is connected with the sliding sleeve 332 in a sliding mode, in the lifting process of the scissor jack 7, the first connector 31 and the second connector 32 respectively generate pulling force or pushing force on the sliding rod 331 and the sliding sleeve 332, so that the telescopic assembly 33 is driven to stretch and contract to generate length change, the torque of a power element of the scissor jack 7 in the lifting process can be continuously transmitted to the lifting screw, the dynamic load test working condition requirement of the scissor jack 7 is met, the structure is simple and reliable, and the manufacturing cost is low.
In this embodiment, as an embodiment, please refer to fig. 2, the radial section of sliding rod 331 is a polygon, and the inner hole of sliding sleeve 332 is a polygon hole 333 matching with the shape of sliding rod 331. The polygonal structure can ensure smooth sliding between the sliding rod 331 and the sliding sleeve 332 and ensure torque transmission.
As a specific implementation manner of the embodiment of the present invention, please refer to fig. 1, the loading mechanism 2 includes two columns 21, a mounting plate 22 and a pressurizing cylinder 23; wherein, the two upright posts 21 are respectively vertically and upwardly arranged on the table top of the operating platform 1 at intervals; the mounting plate 22 is fixedly connected to the top ends of the two upright posts 21; the cylinder 23 is mounted on the mounting plate 22 with the rod end of the cylinder extending downwardly through the mounting plate 22 and adapted to abut the top surface of the scissor jack 7.
It should be noted that the pressure cylinder 23 may be a hydraulic cylinder, and the pressure regulating valve is connected to the hydraulic cylinder, and the loading pressure of the pressure cylinder 23 is adjusted by adjusting the opening and closing size of the pressure regulating valve, so that the hydraulic cylinder has high stability, and can ensure the stability of the applied load and the accuracy of the test data.
In this embodiment, as a specific implementation manner, referring to fig. 1, a sliding plate 24 is disposed at a rod end of the pressurizing cylinder 23, and two ends of the sliding plate 24 are slidably connected to the two columns 21, respectively. Through the sliding connection of the sliding plate 24 and the upright post 21, the connection rigidity of the cylinder rod of the pressurizing cylinder 23 is improved, and the influence of the shaking or the inclination of the cylinder rod of the pressurizing cylinder 23 on the test accuracy is avoided.
In this embodiment, referring to fig. 1, as a specific implementation manner, a pointer 241 is disposed on a side wall of the sliding plate 24, a scale 5 in the same extending direction as the upright post 21 is disposed on a table top of the operating platform 1, and the pointer 241 slides up and down along a scale of a scale surface of the scale 5. Through the graduated scale 5 on the graduated scale 5 that pointer 241 points out, can accurately judge the jacking height of scissor jack 7 to conveniently carry out the experimental data acquisition of scissor jack 7 in each jacking high position.
As a specific implementation manner of the embodiment of the present invention, please refer to fig. 1 and 2, a torque sensor 6 is disposed at one end of the transmission mechanism 3 for connecting with the lifting screw. The torque sensor 6 can detect the torque required by the jacking operation of the scissor jack 7 during the dynamic load test, so as to judge whether the operation torque of the scissor jack 7 in the actual jacking process meets the design standard and the use requirement.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. The utility model provides a shear jack combined test device which characterized in that includes:
the operating platform is connected with a power element for providing torque, a bearing platform for supporting the scissor jack is arranged on the table top, and a pressure sensor is arranged on the bearing platform;
the loading mechanism is arranged on the operating platform and used for applying pressure load to the scissor jack;
and one end of the transmission mechanism is connected with the power element, the other end of the transmission mechanism is used for being connected with a lifting screw rod of the scissor jack, and the transmission mechanism is used for continuously transmitting torque to the lifting screw rod.
2. The scissor jack integrated test apparatus of claim 1, wherein the transmission mechanism comprises:
one end of the first joint is connected with the power element, and the other end of the first joint is rotatably connected with a first connecting piece along an axial direction vertical to the first joint;
one end of the second joint is used for being connected with the lifting screw rod, and the other end of the second joint is rotatably connected with a second connecting piece along an axial direction vertical to the second joint;
one end of the telescopic assembly is rotatably connected with the first connecting piece along an axial direction perpendicular to the telescopic assembly, and the rotating axial direction is perpendicular to the rotating axial direction of the first connecting piece and the first joint; the other end of the second connector is connected with the second connector in a rotating mode along the axial direction perpendicular to the telescopic assembly, and the rotating axial direction of the second connector is perpendicular to the rotating axial direction of the second connector.
3. The scissor jack combination test apparatus of claim 2, wherein: the first connecting piece is a cross shaft, the distances from the four end faces of the first connecting piece to the center are equal, the first joint is rotatably connected with the two ends of the first connecting piece on the same axis, and one end of the telescopic assembly is rotatably connected with the other two ends of the first connecting piece.
4. The scissor jack combination test apparatus of claim 2, wherein: the second connecting piece is a cross shaft, the distances from the center to the four end faces of the second connecting piece are equal, the second joint is rotatably connected with the two ends of the second connecting piece on the same axis, and one end of the telescopic assembly is rotatably connected with the other two ends of the second connecting piece.
5. A scissor jack combination test apparatus as claimed in any one of claims 2 to 4, wherein the telescopic assembly comprises:
one end of the sliding rod is rotatably connected with the first connecting piece;
and one end of the sliding sleeve is rotatably connected with the second connecting piece, and the other end of the sliding sleeve is sleeved on the sliding rod and is in sliding connection with the sliding rod along the axial direction of the sliding rod.
6. The scissor jack combination test apparatus of claim 5, wherein: the radial section of the sliding rod is a polygon, and an inner hole of the sliding sleeve is a polygon hole matched with the shape of the sliding rod.
7. The scissor jack integrated test apparatus of claim 1, wherein the loading mechanism comprises:
the two upright columns are respectively vertically and upwards arranged on the table top of the operating platform at intervals;
the mounting plate is fixedly connected to the top ends of the two upright columns;
and the cylinder rod end of the pressurizing cylinder penetrates through the mounting plate downwards and is used for abutting against the top surface of the scissor jack.
8. The scissor jack combination test apparatus of claim 7, wherein: and the end of the cylinder rod of the pressurizing cylinder is provided with a sliding plate, and two ends of the sliding plate are respectively connected with the two upright posts in a sliding manner.
9. The scissor jack combination test apparatus of claim 8, wherein: the side wall of the sliding plate is provided with a pointer, a graduated scale which is the same as the upright post in the extending direction is arranged on the table top of the operating platform, and the pointer slides up and down along the scale surface scales of the graduated scale.
10. The scissor jack combination test apparatus of claim 1, wherein: and a torque sensor is arranged at one end of the transmission mechanism, which is used for being connected with the lifting screw rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922319847.7U CN211602725U (en) | 2019-12-20 | 2019-12-20 | Shear type jack comprehensive test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922319847.7U CN211602725U (en) | 2019-12-20 | 2019-12-20 | Shear type jack comprehensive test device |
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| Publication Number | Publication Date |
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| CN211602725U true CN211602725U (en) | 2020-09-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201922319847.7U Active CN211602725U (en) | 2019-12-20 | 2019-12-20 | Shear type jack comprehensive test device |
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| CN (1) | CN211602725U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112763199A (en) * | 2020-12-28 | 2021-05-07 | 大连长丰实业总公司 | Aircraft jack test bench |
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2019
- 2019-12-20 CN CN201922319847.7U patent/CN211602725U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112763199A (en) * | 2020-12-28 | 2021-05-07 | 大连长丰实业总公司 | Aircraft jack test bench |
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