Cantilever for fatigue performance test of swivel chair

Abstract

The utility model discloses a cantilever for fatigue performance test of a swivel chair, which comprises a cantilever main body and a driving device, one end of the main body is connected with an industrial robot and is driven by the industrial robot to move three-dimensionally, the driving device is positioned in the main body, and the lower end of the driving device is connected with a driving rod and is used for driving the driving rod to rotate. A connecting rod is arranged at the end, away from the main body, of the driving rod, a connecting end is formed at the end, away from the driving rod, of the connecting rod, and the driving rod is used for driving the connecting end to rotate with the axis of the driving rod as the center; the rotation angle of the driving rod is tested by arranging the testing device, so that the torque or the rotation speed required by rotation of the swivel chair can be measured by inputting different parameters in cooperation with the arrangement of the industrial robot, different testing requirements are met, and the practicability is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of testing devices, and more specifically to a cantilever for a swivel chair fatigue performance test. Background Art

[0002] In the swivel chair fatigue test, it is necessary to rotate the swivel chair for a long time to judge whether its service life meets the standard. However, the current rotation test devices cannot be adapted to the swivel chair, and there are mainly two problems:

[0003] 1. Due to the large morphological differences between different swivel chairs, the adaptability of traditional rotation test devices is poor;

[0004] 2. Due to the large weight of the swivel chair itself, the fatigue test for the swivel chair not only includes the life test, but also includes a series of tests such as the torque required for the swivel chair to rotate and the rotation speed, and the traditional test devices cannot meet the requirements, so there is a need for improvement. Summary of the Utility Model

[0005] Aiming at the deficiencies of the existing technology, the purpose of the present utility model is to provide a cantilever for a swivel chair fatigue performance test, which has strong adaptability and can carry out a variety of test experiments to meet the swivel chair test requirements.

[0006] To achieve the above purpose, the present utility model provides the following technical solutions:

[0007] A cantilever for a swivel chair fatigue performance test, including a cantilever main body, one end of the main body is connected to an industrial robot and performs three-dimensional movement under the drive of the industrial robot;

[0008] A driving device, the driving device is located inside the main body, the lower end of the driving device is connected to a driving rod and is used to drive the driving rod to rotate, one end of the driving rod far away from the main body is provided with a connecting rod, and one end of the connecting rod far away from the driving rod forms a connecting end, and the driving rod is used to drive the connecting end to rotate around the axis of the driving rod;

[0009] A detection device, the detection device is arranged corresponding to the driving rod, and the detection device is used to detect the rotation angle of the driving rod.

[0010] As a further improvement of the present utility model, the driving rod includes a first connection section and a second connection section, one end of the first connection section is connected to the driving device, and the other end is connected to the second connection section, and the position of the second connection section is adjustable along the axis direction of the first connection section.

[0011] As a further improvement of the present utility model, a telescopic cavity is provided at one end of the first connection section, one end of the second connection section is telescopically connected to the telescopic cavity, through adjustment grooves are symmetrically provided on the outer wall of the first connection section, limit holes are provided on the second connection section corresponding to the adjustment grooves, and further includes a bolt. One end of the bolt passes through the two adjustment grooves and the limit holes respectively and is provided with a nut, and the bolt is fixed to the first connection section through the nut.

[0012] As a further improvement of the present utility model, the detection device includes a sensor and a detection disk. The detection disk is coaxially fixed to the second connection section, a plurality of detection grooves are provided on the circumference of the detection disk, and the sensor is arranged corresponding to the detection grooves.

[0013] As a further improvement of the present utility model, the detection device further includes a bracket, and both ends of the bracket are respectively connected to the main body and the sensor.

[0014] As a further improvement of the present utility model, the connecting rod includes a first rod and a second rod. One end of the first rod is fixed to the driving rod, an adjustment hole is provided on the first rod, the second rod is vertically arranged relative to the first rod and is fixed to the first rod through the adjustment hole.

[0015] As a further improvement of the present utility model, the adjustment holes are multiple and are arranged along the length direction of the second rod.

[0016] As a further improvement of the present utility model, at least two mounting holes are provided on the driving rod corresponding to the adjustment holes, and the adjustment holes and the mounting holes are fixedly installed with each other through bolts.

[0017] As a further improvement of the present utility model, a first positioning hole is provided on the side wall of the first rod, a plurality of second positioning holes are provided on the second rod along the length direction, and the first positioning hole is fixed to the second positioning hole through a bolt.

[0018] As a further improvement of the present utility model, a soft cushion layer is wrapped outside the second rod.

[0019] Advantages of the present utility model:

[0020] 1. By connecting to an industrial robot, the position of the cantilever can be adjusted within a large range, so as to meet different test requirements. At the same time, the overall volume can be greatly reduced to achieve lightweight.

[0021] 2. Through the setting of the connecting rod and the connection end, the fixed installation with the swivel chair can be facilitated, thereby expanding the applicability.

[0022] 3. By setting a test device to test the rotation angle of the driving rod, and in cooperation with the setting of the industrial robot, the torque or rotation speed required for the swivel chair to rotate can be measured by inputting different parameters, so as to meet different test requirements and improve the practicality. Description of the Drawings

[0023] Figure 1 This is the overall installation schematic diagram of the present utility model;

[0024] Figure 2 This is the installation schematic diagram of the driving rod of the present utility model;

[0025] Figure 3 This is the installation schematic diagram of the detection disk of the present utility model.

[0026] Reference numerals in the drawings: 1, main body; 2, driving device; 3, driving rod; 4, connecting rod; 5, connecting end; 6, detection device; 7, first connecting section; 8, second connecting section; 9, telescopic cavity; 10, adjustment groove; 11, limiting hole; 12, sensor; 13, detection disk; 14, detection groove; 15, bracket; 16, first rod; 17, second rod; 18, adjustment hole; 19, mounting hole; 20, first positioning hole; 21, second positioning hole. Detailed Description of the Preferred Embodiments

[0027] The present utility model will be further described in detail below in conjunction with the drawings and embodiments. Among them, the same components are denoted by the same reference numerals.

[0028] As Figures 1-3 shown, a cantilever for a swivel chair fatigue performance test includes a cantilever main body 1, one end of the main body 1 is connected to an industrial robot, and it performs three-dimensional movement under the drive of the industrial robot.

[0029] Specifically, the industrial robot is any three-dimensional movement device in the prior art, and is preferably an at least two-axis drive robotic arm in this embodiment.

[0030] Preferably, it further includes a driving device 2. The driving device 2 is located inside the main body 1. The lower end of the driving device 2 is connected to a driving rod 3 and is used to drive the driving rod 3 to rotate. One end of the driving rod 3 away from the main body 1 is provided with a connecting rod 4. One end of the connecting rod 4 away from the driving rod 3 forms a connecting end 5. The driving rod 3 is used to drive the connecting end 5 to rotate around the axis of the driving rod 3.

[0031] Specifically, the driving device 2 is a motor.

[0032] Preferably, it further includes a detection device 6. The detection device 6 is arranged corresponding to the driving rod 3 and is used to detect the rotation angle of the driving rod 3.

[0033] During use, the swivel chair is connected to the connecting end 5. This connection method includes bolt connection, rope fixation or clamping. Further, the driving device 2 drives the connecting rod 4 to rotate through the driving rod 3, thereby driving the swivel chair to rotate. At this time, the detection device 6 measures the rotation angle of the driving rod 3.

[0034] When the operator needs to conduct a rotational fatigue strength test on the swivel chair, it can be completed only by rotating the swivel chair through the driving device 2 for a long time.

[0035] When the operator needs to conduct a driving strength test on the swivel chair, the rotational speed of the swivel chair under different output torques can be tested by adjusting the output torque of the driving device 2, so as to meet various test requirements.

[0036] Preferably, the driving rod 3 includes a first connection section 7 and a second connection section 8. One end of the first connection section 7 is connected to the driving device 2, and the other end is connected to the second connection section 8. The position of the second connection section 8 is adjustable along the axis direction of the first connection section 7.

[0037] By adjusting the position of the second connection section 8 relative to the axis of the first connection section 7, the position of the connecting rod 4 relative to the main body 1 can be adjusted, so as to improve the adaptability to swivel chairs of different shapes.

[0038] Preferably, one end of the first connection section 7 is provided with a telescopic cavity 9. One end of the second connection section 8 is telescopically connected to the telescopic cavity 9. The outer wall of the first connection section 7 is symmetrically provided with through adjustment grooves 10. The second connection section 8 is provided with limiting holes 11 corresponding to the adjustment grooves 10. A bolt is also included. One end of the bolt passes through the two adjustment grooves 10 and the limiting holes 11 respectively and is provided with a nut. The bolt is fixed to the first connection section 7 through the nut.

[0039] During use, the second connection section 8 is located in the telescopic hole. The bolt passes through the two adjustment grooves 10 and the limiting holes 11 and is connected with the nut. By tightening the nut, the adjustment of the position of the second connection section 8 relative to the first connection section 7 can be realized. The adjustment method of the bolt makes the adjustment more convenient and fast.

[0040] Preferably, the detection device 6 includes a sensor 12 and a detection disc 13. The detection disc 13 is coaxially fixed with the second connection section 8. A plurality of detection grooves 14 are provided on the circumference of the detection disc 13. The sensor 12 is arranged corresponding to the detection grooves 14.

[0041] Specifically, the sensor 12 is a photosensitive sensor 12. Further preferably, the detection disc 13 is black to improve the detection accuracy. During use, when the second connection section 8 rotates, it will drive the detection disc 13 to rotate at the same time, so that the detection grooves 14 pass through the sensor 12. The photosensitive sensor 12 realizes the angle recognition effect through the change of light.

[0042] In another embodiment, the sensor 12 can also be a specific sensor 12, that is, when the detection groove 14 / the detection disc 13 corresponds to the sensor 12, the signal change of the sensor 12 can also be realized.

[0043] Preferably, the detection device 6 further includes a bracket 15, and both ends of the bracket 15 are respectively connected to the main body 1 and the sensor 12.

[0044] In one way, the bracket 15 is detachable from the main body 1. In another way, the bracket 15 is also set as a telescopic device, specifically a telescopic rod.

[0045] Preferably, the connecting rod 4 includes a first rod 16 and a second rod 17. One end of the first rod 16 is fixed to the driving rod 3, and an adjustment hole 18 is provided on the first rod 16. The second rod 17 is vertically arranged relative to the first rod 16 and is fixed to the first rod 16 through the adjustment hole 18.

[0046] The vertically arranged second rod 17 can greatly increase the installation range with the swivel chair. More specifically, in this embodiment, the connecting end 5 is the entire outer wall of the second rod 17.

[0047] Preferably, there are multiple adjustment holes 18, which are arranged along the length direction of the second rod 17.

[0048] The arrangement of multiple adjustment holes 18 can adjust the position of the second rod 17 relative to the first rod 16, thereby increasing the overall adjustment range.

[0049] Preferably, the driving rod 3 is provided with at least two mounting holes 19 corresponding to the adjustment holes 18, and the adjustment holes 18 and the mounting holes 19 are fixedly installed with each other through bolts.

[0050] The arrangement of two mounting holes 19 can, on the one hand, adjust the relative position of the first rod 16 and the driving rod 3, and at the same time, the two mounting holes 19 can fix and limit the driving rod 3.

[0051] Preferably, a first positioning hole 20 is provided on the side wall of the first rod 16, and multiple second positioning holes 21 are provided along the length direction of the second rod 17. The first positioning hole 20 is fixed to the second positioning holes 21 through bolts.

[0052] The arrangement of multiple second positioning holes 21 can adjust the position of the second rod 17 relative to the adjustment holes 18 to further expand the installation range.

[0053] Preferably, a soft cushion layer (not shown in the figure) is wrapped outside the second rod 17.

[0054] The arrangement of the soft cushion layer can reduce the rigid contact with the swivel chair, and at the same time make the force on the second rod 17 more uniform to improve the overall heavy load capacity.

[0055] The above are only the preferred embodiments of the present utility model. The protection scope of the present utility model is not limited to the above embodiments. All technical solutions falling within the concept of the present utility model belong to the protection scope of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present utility model, several improvements and refinements should also be regarded as within the protection scope of the present utility model.

Claims

1. A cantilever for fatigue performance test of a swivel chair, characterized in that: It includes a cantilever main body (1), one end of the main body (1) is connected to an industrial robot and performs three-dimensional movement under the drive of the industrial robot; A driving device (2), the driving device (2) is located inside the main body (1), a driving rod (3) is connected to the lower end of the driving device (2) and is used to drive the driving rod (3) to rotate, one end of the driving rod (3) away from the main body (1) is provided with a connecting rod (4), and a connecting end (5) is formed at one end of the connecting rod (4) away from the driving rod (3), and the driving rod (3) is used to drive the connecting end (5) to rotate around the axis of the driving rod (3); A detection device (6), the detection device (6) is arranged corresponding to the driving rod (3), and the detection device (6) is used to detect the rotation angle of the driving rod (3).

2. The cantilever for the fatigue performance test of a swivel chair according to claim 1, characterized in that: The driving rod (3) includes a first connection section (7) and a second connection section (8), one end of the first connection section (7) is connected to the driving device (2), and the other end is connected to the second connection section (8), and the position of the second connection section (8) is adjustable along the axis direction of the first connection section (7).

3. The cantilever for swivel chair fatigue performance test according to claim 2, characterized in that: One end of the first connection section (7) is provided with a telescopic cavity (9), one end of the second connection section (8) is telescopically connected to the telescopic cavity (9), through adjustment grooves (10) are symmetrically arranged on the outer wall of the first connection section (7), a limiting hole (11) is arranged on the second connection section (8) corresponding to the adjustment groove (10), and a bolt is further included. One end of the bolt passes through the two adjustment grooves (10) and the limiting hole (11) respectively and is provided with a nut, and the bolt is fixed to the first connection section (7) through the nut.

4. A cantilever for a swivel chair fatigue performance test according to claim 2, characterized in that: The detection device (6) includes a sensor (12) and a detection disk (13), the detection disk (13) is coaxially fixed to the second connection section (8), and a plurality of detection grooves (14) are arranged circumferentially on the detection disk (13), and the sensor (12) is arranged corresponding to the detection grooves (14).

5. A cantilever for a swivel chair fatigue performance test according to claim 4, characterized in that: The detection device (6) further includes a bracket (15), and both ends of the bracket (15) are respectively connected to the main body (1) and the sensor (12).

6. The cantilever for the fatigue performance test of a swivel chair according to claim 1, characterized in that: The connecting rod (4) includes a first rod (16) and a second rod (17), one end of the first rod (16) is fixed to the driving rod (3), an adjustment hole (18) is arranged on the first rod (16), the second rod (17) is arranged perpendicular to the first rod (16) and is fixed to the first rod (16) through the adjustment hole (18).

7. A cantilever for a swivel chair fatigue performance test according to claim 6, characterized in that: The adjustment holes (18) are multiple and are arranged along the length direction of the second rod (17).

8. A cantilever for a swivel chair fatigue performance test according to claim 7, characterized in that: At least two mounting holes (19) are arranged on the driving rod (3) corresponding to the adjustment holes (18), and the adjustment holes (18) and the mounting holes (19) are fixedly installed with each other through bolts.

9. A cantilever for a swivel chair fatigue performance test according to claim 6, characterized in that: A first positioning hole (20) is arranged on the side wall of the first rod (16), a plurality of second positioning holes (21) are arranged along the length direction of the second rod (17), and the first positioning hole (20) is fixed to the second positioning hole (21) through a bolt.

10. A cantilever for a swivel chair fatigue performance test according to claim 6, characterized in that: The second rod (17) is wrapped with a soft cushion layer.

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