Gear positioning mechanism and gear torsion testing device

Abstract

The utility model discloses a gear positioning mechanism and a gear torsion testing device, and the mechanism comprises a supporting platform which is used for placing a to-be-tested gear; the limiting column is arranged on the supporting table, and the limiting column is matched with a shaft hole of the gear to limit the position of the gear on the supporting table; the gear can move along the limiting column; the side, close to the limiting column, of the positioning piece is provided with at least one positioning groove meshed with any tooth part of the gear, and the positioning piece is used for limiting circumferential rotation of the gear; and a preset distance is formed between the limiting column and the positioning groove, so that the tooth part can be clamped into the positioning groove in the process that the gear moves to the supporting table from the top end of the limiting column. The beneficial effects of the utility model lie in that rapid and accurate positioning of the gear can be realized, thereby improving the testing efficiency.

Description

Technical Field

[0001] This utility model relates to a gear positioning mechanism and a gear torque testing device, belonging to the field of gear torque testing technology. Background Technology

[0002] As a core component of the transmission system, the quality of gears directly affects the operational safety and service life of mechanical equipment. Therefore, performance testing of gears is particularly important after production.

[0003] In practical testing, a torque testing device is typically used to test the gear's ability to withstand torque, thereby evaluating its performance. For example, Chinese utility model patent CN222336606U discloses a torque testing rotary mechanism, including a base with a ring-shaped turntable rotatably mounted on top of the base. A placement platform is located at the center of the turntable on the top of the base, on which a gear-shaped part to be tested is placed. A drive assembly for rotating the turntable is located on the top of the base. This utility model can fix gear-shaped parts of different models. However, positioning the part involves operating multiple clamping rods to abut against the teeth of the part, which is complex and results in low testing efficiency. Utility Model Content

[0004] The purpose of this invention is to provide a gear positioning mechanism and a gear torque testing device, which can achieve rapid and accurate positioning of gears during testing and improve the efficiency of gear torque testing.

[0005] This utility model is achieved through the following technical solution.

[0006] A gear positioning mechanism, comprising:

[0007] A support platform for holding the gear to be tested;

[0008] A limiting post is provided on the support platform, and the limiting post matches the shaft hole of the gear to limit the position of the gear on the support platform; and the gear can move along the limiting post;

[0009] The positioning component has at least one positioning groove on the side near the limiting post that engages with any one of the teeth of the gear, thereby restricting the circumferential rotation of the gear; there is a preset distance between the limiting post and the positioning groove, so that the teeth of the gear can be engaged in the positioning groove during the process of the gear moving from the top of the limiting post to the support platform.

[0010] As a further improvement of this utility model, the positioning groove is provided in multiple ways, and the multiple positioning grooves are arranged at intervals along the circumference of the gear.

[0011] As a further improvement of the utility model, the gear and the limiting column are rotationally matched, so that the gear part and the positioning groove are switched between the misalignment state and the alignment state.

[0012] A gear torsion testing device comprises the gear positioning mechanism and the torsion testing mechanism in the above technical solution, and the torsion testing mechanism has a testing head for applying external torsion to the gear.

[0013] As a further improvement of the utility model, the testing head is arranged in mesh with the gear, and the testing head can rotate along the circumference of the gear.

[0014] As a further improvement of the utility model, the torsion testing mechanism comprises a driver and a rotating shaft driven to rotate by the driver, the testing head is mounted on the rotating shaft, and the driver is used to drive the testing head to rotate so as to apply external torsion to the gear.

[0015] As a further improvement of the utility model, the positioning member is detachably connected with the support table.

[0016] As a further improvement of the utility model, the support table is formed with a mounting cavity, which can accommodate at least the rotating shaft and the testing head.

[0017] As a further improvement of the utility model, the rotating shaft is rotationally connected to the inner wall of the support table corresponding to the mounting cavity through a connecting member.

[0018] As a further improvement of the utility model, the connecting member is a bearing.

[0019] The utility model has the advantages of:

[0020] When the gear is mounted on the support table, the gear part of the gear can be naturally embedded into the positioning groove while the gear is moved from the top end of the limiting column to the support table, the gear part of the gear is engaged with the positioning groove, the gear is conveniently mounted and accurately positioned on the support table, the gear is quickly and accurately positioned, the torsion testing efficiency of the gear is improved, and the gear is quickly dismounted from the support table while the gear is moved along the distal end of the limiting column, the gear is moved out of the positioning groove, the gear is quickly dismounted, and the testing efficiency is further improved. BRIEF DESCRIPTION OF DRAWINGS

[0021] The preferred embodiments of the utility model will be described in detail below with reference to the drawings, so as to help understand the purposes and advantages of the utility model, wherein:

[0022] Figure 1 It is a structural schematic view of a gear positioning mechanism of the utility model;

[0023] Figure 2A plan view of the gear positioning mechanism of the utility model;

[0024] Figure 3 For Figure 2 An enlarged view of part A;

[0025] Figure 4 A plan view of the gear positioning mechanism of the utility model when the gear is not installed;

[0026] Figure 5 For Figure 4 A sectional view along the A-A direction;

[0027] Figure 6 A structural schematic view of the gear. DETAILED DESCRIPTION

[0028] The utility model will be further explained in detail below according to the drawings and implementation cases.

[0029] In the present specification, the orientation terms such as up, down, left, right, front, back, front face, back face, top, bottom, etc. mentioned or possibly mentioned are defined relative to the structure shown in the drawings, and the words "inner" and "outer" respectively refer to the direction towards or away from the geometric center of a particular component, which are relative concepts, so it is possible to change accordingly according to different positions and different use states. Therefore, these or other orientation terms should not be interpreted as restrictive terms. EMBODIMENT

[0030] A gear positioning mechanism for positioning a gear m when performing gear m torsion test, referring to Figures 1-6 , which comprises a support table 1 for placing the gear m to be tested, a limiting column 2 and a positioning piece 3, wherein the gear m is placed on the top surface of the support table 1, the limiting column 2 is arranged on the support table 1 and matches the shaft hole of the gear m to limit the position of the gear m on the support table 1, the limiting column 2 is at least partially above the top surface of the support table 1, the limiting column 2 is perpendicular to the top surface of the support table 1, and the gear m can move along the limiting column 2. The positioning piece 3 has at least one positioning groove 31 for engaging with the tooth part m1 of the gear m on the side close to the limiting column 2, for limiting the circumferential rotation of the gear m, and the limiting column 2 and the positioning groove 31 have a predetermined spacing, and the positioning groove 31 is arranged in extension along the extension direction of the limiting column 2, so that the tooth part m1 can be clamped into the positioning groove 31 in the process of moving the gear m from the top end of the limiting column 2 to the support table 1.

[0031] In the embodiment, the gear m can be moved on the support table 1 along the limiting column 2, and the position of the gear m on the support table 1 is limited by the limiting column 2, the limiting column 2 has a preset interval with the positioning groove 31, and the positioning groove 31 is arranged in extension along the extension direction of the limiting column 2. Therefore, when the gear m is installed on the support table 1, the gear m can be naturally inserted into the positioning groove 31 while the gear m slides from the end of the limiting column 2 away from the support table 1 to the support table 1, so that the gear m is conveniently installed and accurately positioned on the support table 1, the fast and accurate positioning of the gear m is realized, the efficiency of the torsion test of the gear m is improved, and meanwhile, when the gear m is disassembled from the support table 1, the gear m can be moved away from the positioning groove 31 while the gear m is moved along the distal end of the limiting column 2, so that the gear m is quickly disassembled, and the efficiency of the torsion test of the gear m is further improved.

[0032] In the embodiment, the gear m and the limiting column 2 can be gap-fitted, that is, the shaft hole size of the gear m is slightly larger than the size of the limiting column 2, so that the limiting column 2 not only limits the position of the gear m in the axial direction, but also facilitates the movement of the gear m relative to the limiting column 2.

[0033] In the embodiment, the positioning groove 31 of the gear m is engaged with the gear m, that is, the groove wall of the positioning groove 31 is in contact with the gear m, so that the gear m cannot rotate in the circumferential direction under the action of an external force. The positioning groove 31 is provided in a plurality of forms, and the plurality of positioning grooves 31 are arranged in the circumferential direction of the gear m, so that the positioning member 3 and the gear m are formed in a multi-point engagement, which helps to improve the reliability of the positioning of the gear m.

[0034] It should be noted that, in actual operation, in order to enable the gear m to be smoothly inserted into the positioning groove 31 when the gear m is moved along the limiting column 2, it is necessary to ensure that the gear m is aligned with the positioning groove 31 when the gear m is moved, that is, the alignment state. However, since the process of installing the gear m is manually operated, the accuracy of the movement track of the gear m on the limiting column 2 cannot be guaranteed, and errors, that is, misalignment states, are likely to occur, so that the gear m cannot be smoothly inserted into the positioning groove 31. Therefore, in order to enable the gear m to be smoothly inserted into the positioning groove 31 when the movement track of the gear m has an error, the gear m is arranged in rotational cooperation with the limiting column 2, so that when the gear m is in a misalignment state with the positioning groove 31, the gear m can be rotated to enable the gear m to be in an alignment state with the positioning groove 31. Specifically, the limiting column 2 can be made of a low-friction material or have an internal bearing, so as to allow the gear m to be rotated relative to the limiting column 2 before being inserted into the positioning groove 31.

[0035] Embodiment 2

[0036] A gear torsion test device comprises the gear positioning mechanism and the torsion test mechanism of embodiment 1, and the torsion test mechanism has a test head 41 for applying external torsion to the gear m.

[0037] In this embodiment, the test head 41 is arranged in engagement with the gear m and can rotate along the circumference of the gear m. The test head 41 is arranged in engagement with the gear m, which can simulate the force condition of the gear m in the transmission system and is closer to the actual use scenario of the gear m, and the engagement state of the test head 41 and the gear m can prevent the gear m from being accidentally separated from the test head 41 during high-torsion testing and reduce the risk of equipment damage.

[0038] Specifically, the torsion test mechanism comprises a driver (not shown in the figure), a rotating shaft 42 driven to rotate by the driver, and a torsion sensor (not shown in the figure) for testing the output torsion of the driver, which can be installed on the rotating shaft 42 through a shaft coupling. The rotating shaft 42 is installed on the driver, and the test head 41 is installed on the rotating shaft 42. The driver is used to drive the test head 41 to rotate to apply external torsion to the gear m. The driver is a servo motor in this embodiment. During testing, the driver works to drive the rotating shaft 42 to rotate, thereby driving the test head 41 installed on the rotating shaft 42 to rotate. When the test head 41 rotates, it applies torsion to the gear m. The torsion sensor can be connected with an external display for real-time operation.

[0039] In this embodiment, the positioning member 3 is detachably connected with the support table 1 and can be connected through bolts. Different specifications of gears m can be adapted by replacing the positioning member 3, thereby reducing the cost of equipment modification.

[0040] In this embodiment, the support table 1 is formed with a mounting cavity 11 that penetrates the support table 1. The mounting cavity 11 is used to accommodate the rotating shaft 42 and the test head 41, so that the overall structure of the test device is relatively compact. At the same time, the mounting cavity 11 can also play a protective role on the rotating shaft 42 and the test head 41, avoiding interference from the external environment. Furthermore, the rotating shaft 42 is rotatably connected to the inner wall of the support table 1 corresponding to the mounting cavity 11 through a connecting member 43, which can improve the stability of the rotating shaft 42 when it rotates. The connecting member 43 is a bearing in this embodiment.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments or make equivalent replacements to some technical features. These modifications or replacements do not change the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A gear torsion testing device, characterized by, The gear positioning mechanism comprises: A support table (1) for placing a gear (m) to be detected; A limiting column (2) provided on the support table (1), which matches the shaft hole of the gear (m) to limit the position of the gear (m) on the support table (1); and the gear (m) can move along the limiting column (2); A positioning member (3) has at least one positioning groove (31) engaging with any tooth (m1) of the gear (m) on one side close to the limiting column (2), for limiting the circumferential rotation of the gear (m); the limiting column (2) and the positioning groove (31) have a preset distance, so that the tooth (m1) can be clamped into the positioning groove (31) during the movement of the gear (m) from the top end of the limiting column (2) to the support table (1); the positioning groove (31) is provided in plurality and is arranged in interval along the circumference of the gear (m); the gear (m) and the limiting column (2) are rotationally matched, so that the tooth (m1) and the positioning groove (31) can be switched from misalignment state to alignment state; The torque testing mechanism has a testing head (41) for applying external torque to the gear (m); the testing head (41) is arranged in meshing with the gear (m), and the testing head (41) can rotate along the circumference of the gear (m); the torque testing mechanism comprises a driver and a rotating shaft (42) driven to rotate by the driver, the testing head (41) is installed on the rotating shaft (42), and the driver is used to drive the testing head (41) to rotate to apply external torque to the gear (m).

2. The gear torsion testing device of claim 1, wherein, The positioning member (3) and the support table (1) are detachably connected.

3. The gear torsion testing device of claim 1, wherein, The support table (1) is formed with a mounting cavity (11) capable of accommodating at least the rotating shaft (42) and the testing head (41).

4. The gear torsion testing device of claim 3, wherein, The rotating shaft (42) is rotationally connected to the inner wall of the support table (1) corresponding to the mounting cavity (11) through a connecting member (43).

5. The gear torsion testing device of claim 4, wherein, The connecting member (43) is provided as a bearing.

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