A rotation durability testing device for a support arm

Abstract

The present invention provides a rotation durability test device for a support arm. First, a mounting table is provided, on which a plurality of test units are mounted. The test units include a driving component, a transmission mechanism, and a positioning plate. A sheet metal part is positioned on the positioning plate. The sheet metal part includes a base plate and a support arm. The support arm is rotatably connected to the base plate. The transmission mechanism includes a rack, a gear, a transmission shaft, and a fixture. The gear is rollingly connected to the rack. The first end of the fixture and the gear are respectively fixedly connected to the opposite ends of the transmission shaft. The second end of the fixture clamps the support arm. The rack reciprocates under the drive of the cylinder. The gear rotates under the drive of the rack, and the fixture rotates under the drive of the gear, thereby driving the support arm to rotate back and forth. Compared with the prior art, the present invention assists the support arm in completing the rotation test through a direct and effective gear and rack transmission structure. Its high stability meets the durability requirements of the test, and the rotation frequency is adjustable to meet a variety of test requirements.

Description

Technical Field

[0001] The invention relates to a rotation performance test of a support arm, and in particular to a rotation durability test device of a support arm. Background Art

[0002] The rotation test platform is a device used for rotation measurement. When the rotation performance of a product is to be tested, the test device and the tested product are placed on the rotation test platform. The rotation of the product is then driven by the rotation of the rotation test device. The rotation performance of the product can be tested to different degrees by adjusting the frequency of the driving device to obtain more complete test data.

[0003] At present, there is no durability test on the support arm in the relevant technical field. It is just a simple preliminary torque test on the product. The service life and performance experience of the product are not taken into consideration. There are quality risks. There is no more stringent product management and service pursuit, which is not conducive to the long-term development experience and far-reaching strategy of the product. For example, the torque attenuation curve of the support arm during the test of 10,000 times will affect the customer's product experience. Summary of the invention

[0004] In view of this, the present invention provides a rotation durability testing device for a support arm. Compared with the prior art, a direct and effective gear and rack transmission structure is used to assist the support arm in completing the rotation test. Its high stability meets the durability requirements of the test, and the rotation frequency is adjustable to meet a variety of testing needs.

[0005] To this end, the present invention provides a rotation durability test device for a support arm. First, a mounting table is set up, on which a plurality of test units are installed. The test units include a driving component, a transmission mechanism and a positioning plate. A sheet metal part is positioned on the positioning plate. The sheet metal part includes a base plate and a support arm. The support arm is rotatably connected to the base plate. The transmission mechanism includes a rack, a gear, a transmission shaft and a clamp. The gear is rollingly connected to the rack. The first end of the clamp and the gear are respectively fixedly connected to the opposite ends of the transmission shaft. The second end of the clamp clamps the support arm. The rack makes reciprocating motion under the drive of the cylinder, the gear rotates under the drive of the rack, and the clamp rotates under the drive of the gear, thereby driving the support arm to rotate back and forth.

[0006] Furthermore, the rack is slidably mounted on the mounting platform through a limiting seat.

[0007] Furthermore, the limit seat includes a linear guide rail and two limit plates, the two limit plates are respectively connected to opposite sides of the linear guide rail, the rack is slidably connected to the linear guide rail, and the two limit plates are respectively against opposite sides of the rack.

[0008] Furthermore, the limiting plate is an L-shaped plate.

[0009] Furthermore, the inner end surface of the limiting plate abuts against the rack, and the inner end surface of the limiting plate is an arc-shaped surface.

[0010] Furthermore, a transmission plate is fixedly connected between the rack and the cylinder.

[0011] Furthermore, a base block is fixedly mounted on the mounting platform, and the transmission shaft passes through the base block.

[0012] Further, the clamp and the gear are respectively located on opposite sides of the base block.

[0013] Furthermore, the clamp includes a U-shaped block and two clamping rods, the U-shaped block is fixedly connected to the end of the transmission shaft, and the two clamping rods are fixedly connected to the U-shaped block.

[0014] Furthermore, the support arm is clamped between the two clamping rods.

[0015] In a rotation durability testing device for a support arm provided by the present invention, a mounting table and multiple test units are mainly arranged. Each test unit can test one support arm. Testing multiple support arms at the same time can improve the efficiency and consistency of the test. The test unit includes a driving component, a transmission mechanism and a positioning plate. The positioning plate is used to position the support arm to avoid position displacement during the test. The driving component adopts a cylinder and uses pneumatics as the power, which has little impact on the product and greatly improves the product standard and efficiency. The transmission mechanism includes a rack, a gear, a transmission shaft and a clamp. The gear is rollingly connected to the rack. The rack reciprocates under the drive of the cylinder, thereby driving the gear transmission, and then driving the support arm to rotate, completing the rotation test of the support arm.

[0016] Therefore, compared with the prior art, this structure has the following advantages:

[0017] 1. The rotation durability test of the support arm is realized, and the customer is informed of the durability data of the product in advance, thereby improving the customer's usage experience.

[0018] 2. The transmission structure is simple and direct, with strong stability.

[0019] 3. The rotation frequency can be adjusted to meet various testing needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present invention. Moreover, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0021] Figure 1A schematic structural diagram of a rotation durability testing device for a support arm provided in an embodiment of the present invention.

[0022] Figure 2 A schematic structural diagram of a rotation durability testing device for a support arm provided in an embodiment of the present invention.

[0023] Figure 3 A schematic structural diagram of a rotation durability testing device for a support arm provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0024] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0025] Embodiment 1:

[0026] See also Figures 1 to 3 , the figure shows a rotation durability test device for a support arm provided by an embodiment of the present invention, wherein a mounting table 1 is first provided, on which a plurality of test units are mounted, the test units comprising a driving component 2, a transmission mechanism 3 and a positioning plate 4, a sheet metal part 41 is positioned on the positioning plate 4, the sheet metal part 41 comprises a base plate 411 and a support arm 412, the support arm 412 is rotatably connected to the base plate 411, the transmission mechanism 3 comprises a rack 31, a gear 32, a transmission shaft 33 and a fixture 34, the gear 32 is rollingly connected to the rack 31, a first end of the fixture 34 and the gear 32 are respectively fixedly connected to opposite ends of the transmission shaft 33, a second end of the fixture 34 clamps the support arm 412, the driving component 2 is a cylinder, the rack 31 reciprocates under the drive of the cylinder 2, the gear 32 rotates under the drive of the rack 31, and the fixture 34 rotates under the drive of the gear 32, thereby driving the support arm 412 to rotate back and forth.

[0027] See also Figures 1 to 3The rack 31 is slidably mounted on the mounting platform 1 through a limiting seat 5. The limiting seat 5 includes a linear guide rail 51 and two limiting plates 52. The two limiting plates 52 are respectively connected to opposite sides of the linear guide rail 51. The rack 31 is slidably connected to the linear guide rail 51, and the two limiting plates 52 respectively abut against opposite sides of the rack 31. The limiting plate 52 is an L-shaped plate. The inner end surface of the limiting plate 52 abuts against the rack 31, and the inner end surface of the limiting plate 52 is an arc surface. A transmission plate 21 is fixedly connected between the rack 31 and the cylinder, a base block 11 is fixedly installed on the mounting table 1, a transmission shaft 33 is passed through the base block 11, a clamp 34 and a gear 32 are respectively located on opposite sides of the base block 11, and the clamp 34 includes a U-shaped block 341 and two clamping rods 342, the U-shaped block 341 is fixedly connected to the end of the transmission shaft 33, the two clamping rods 342 are fixedly connected to the U-shaped block 341, and the support arm 412 is clamped between the two clamping rods 342.

[0028] In a rotation durability testing device for a support arm provided by the present invention, a mounting table and multiple test units are mainly arranged. Each test unit can test one support arm. Testing multiple support arms at the same time can improve the efficiency and consistency of the test. The test unit includes a driving component, a transmission mechanism and a positioning plate. The positioning plate is used to position the support arm to avoid position displacement during the test. The driving component adopts a cylinder and uses pneumatics as the power, which has little impact on the product and greatly improves the product standard and efficiency. The transmission mechanism includes a rack, a gear, a transmission shaft and a clamp. The gear is rollingly connected to the rack. The rack reciprocates under the drive of the cylinder, thereby driving the gear transmission, and then driving the support arm to rotate, completing the rotation test of the support arm.

[0029] Therefore, compared with the prior art, this structure has the following advantages:

[0030] 1. The rotation durability test of the support arm is realized, and the customer is informed of the durability data of the product in advance, thereby improving the customer's usage experience.

[0031] 2. The transmission structure is simple and direct, with strong stability.

[0032] 3. The rotation frequency can be adjusted to meet various testing needs.

[0033] Embodiment 2:

[0034] See also Figures 1 to 3The figure shows a rotation durability test device for a support arm provided by embodiment 2 of the present invention. Based on the above embodiment, this embodiment further makes the following improved technical solutions: a base block 11 is fixedly mounted on the mounting table 1, a transmission shaft 33 is passed through the base block 11, a through hole is opened in the base block 11, an oil-free bushing is installed in the through hole, and the transmission shaft 33 is rotatably installed in the oil-free bushing, thereby improving the service life of the transmission shaft 33, and at the same time can reduce the resistance generated by the rotation and improve the driving efficiency of the cylinder.

[0035] Embodiment three:

[0036] See also Figures 1 to 3 , the figure shows a rotation durability test device for a support arm provided by embodiment 3 of the present invention. This embodiment further makes the following improved technical solutions on the basis of the above embodiments: a plurality of test units are installed on the mounting table 1, and the test units include a driving component 2, a transmission mechanism 3 and a positioning plate 4. A rotating shaft and a positioning pin are provided between the positioning plate 4 and the mounting table 1. The positioning plate 4 is rotatably installed on the mounting table 1 by the rotating shaft. After the angle of the positioning plate 4 is adjusted, it is fixed with the positioning pin. This structure is suitable for more types of products.

[0037] Embodiment 4:

[0038] See also Figures 1 to 3 , the figure shows a rotation durability test device for a support arm provided by embodiment 4 of the present invention. This embodiment further makes the following improved technical solutions on the basis of the above embodiments: the clamp 34 includes a U-shaped block 341 and two clamping rods 342, the U-shaped block 341 is fixedly connected to the end of the transmission shaft 33, the two clamping rods 342 are elastically connected to the U-shaped block 341, and the support arm 412 is clamped between the two clamping rods 342. The two clamping rods 342 can adjust the spacing between the clamping rods 342 due to the design of the elastic structure, so as to clamp the support arms 412 of different thicknesses.

[0039] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A rotation durability test device for a support arm, characterized in that: include: A mounting platform (1) on which a plurality of test units are mounted, the test units comprising a driving component (2), a transmission mechanism (3) and a positioning plate (4), a sheet metal component (41) being positioned on the positioning plate (4), the sheet metal component (41) comprising a base plate (411) and a support arm (412), the support arm (412) being rotatably connected to the base plate (411); The transmission mechanism (3) comprises a rack (31), a gear (32), a transmission shaft (33) and a clamp (34); the gear (32) is rollingly connected to the rack (31); a first end of the clamp (34) and the gear (32) are respectively fixedly connected to opposite ends of the transmission shaft (33); and a second end of the clamp (34) clamps the support arm (412); The driving component (2) is a cylinder, the rack (31) performs reciprocating motion under the drive of the cylinder, the gear (32) rotates under the drive of the rack (31), and the clamp (34) rotates under the drive of the gear (32), thereby driving the support arm (412) to rotate back and forth; A rotating shaft and a positioning pin are provided between the positioning plate (4) and the mounting platform (1), and the positioning plate (4) is rotatably mounted on the mounting platform (1) via the rotating shaft; The clamp (34) comprises a U-shaped block (341) and two clamping rods (342); the U-shaped block (341) is fixedly connected to the end of the transmission shaft (33); the two clamping rods (342) are elastically connected to the U-shaped block (341); the support arm (412) is clamped between the two clamping rods (342); and the two clamping rods (342) can adjust the distance between the clamping rods (342) through an elastic structure.

2. A rotation durability testing device for a support arm according to claim 1, characterized in that: The rack (31) is slidably mounted on the mounting platform (1) via a limiting seat (5).

3. A support arm rotation durability testing device according to claim 2, characterized in that: The limit seat (5) comprises a linear guide rail (51) and two limit plates (52), the two limit plates (52) are respectively connected to opposite sides of the linear guide rail (51), the rack (31) is slidably connected to the linear guide rail (51), and the two limit plates (52) respectively abut against opposite sides of the rack (31).

4. The rotation durability testing device of a support arm according to claim 3, characterized in that: The limiting plate (52) is an L-shaped plate.

5. The rotation durability testing device of a support arm according to claim 4, characterized in that: The inner end surface of the limiting plate (52) abuts against the rack (31), and the inner end surface of the limiting plate (52) is an arc-shaped surface.

6. A support arm rotation durability testing device according to any one of claims 1 to 5, characterized in that: A transmission plate (21) is fixedly connected between the rack (31) and the cylinder.

7. The rotation durability testing device of a support arm according to claim 1, characterized in that: A base block (11) is fixedly mounted on the mounting platform (1), and the transmission shaft (33) is inserted into the base block (11).

8. The rotation durability testing device of a support arm according to claim 7, characterized in that: The clamp (34) and the gear (32) are respectively located on opposite sides of the base block (11).

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