Transmission device and bevel gear backlash detection device thereof

Abstract

The utility model relates to a transmission device. The transmission device comprises a driving bevel gear, a driven bevel gear and a shell. The utility model further relates to a bevel gear backlash detection device, the bevel gear backlash detection device is used for detecting a gap between the driving bevel gear and the driven bevel gear which are installed in the shell, the driving bevel gear is meshed with the driven bevel gear, and the bevel gear backlash detection device comprises a positioning clamping plate, a detection assembly, a fixing assembly and a testing plate. The positioning clamping plate is installed on the outer surface of the shell, the detection assembly is installed on the positioning clamping plate, the fixing assembly is used for fixing the driving bevel gear, the testing plate is fixed to the driven bevel gear and provided with a testing part, and the distance between the testing part and the rotating axis of the driven bevel gear is L 1. The distance from the central point of the meshed position of the driving bevel gear and the driven bevel gear to the rotating axis of the driven bevel gear is L2, the L < 1 > is in direct proportion to the L2, and the detection assembly is connected to the testing part to detect the stroke of the reciprocating motion of the testing part.

Description

Technical Field

[0001] The present application relates to the technical field of backlash measurement, and in particular to a transmission device and a bevel gear backlash detection device thereof. Background Art

[0002] As the power source of new energy vehicles, the electric drive system is required to have the characteristics of high power density, large load variation, strong overload capacity and high performance. The main components in the electric drive system are the motor stator, motor rotor and reducer gear shaft. During the operation of the electric drive system, the speed and torque of the motor need to be transmitted to the transfer shaft and the output shaft respectively. Because it involves vertical reversing of power, the application requirements of the master and driven bevel gears are increased. The size of the gap between the master and driven bevel gears has a serious impact on the overall noise evaluation of the electric drive system and the gear transmission effect. However, since the entire transmission device is installed inside the housing, it is a fully enclosed structure. The relevant technology usually measures each component independently and calculates the gear clearance according to the dimension chain system. The manufacturing accuracy of the components and the investment in measuring equipment are high, and there is a problem of inconvenience in measuring the actual gap. Utility Model Content

[0003] In view of this, the present application provides a transmission device and a bevel gear side clearance detection device thereof, which can conveniently detect the actual clearance between the driving and driven bevel gears.

[0004] An embodiment of the present application provides a transmission device, which includes: an intermediate shaft, a driving bevel gear, a driven bevel gear and a housing, wherein the driving bevel gear and the driven bevel gear are both arranged in the housing; wherein the transmission device also includes an adjusting gasket, which is arranged at one end of the intermediate shaft and is used to press the intermediate shaft so that the intermediate shaft has a starting torque T1; when the intermediate shaft is subjected to a torque less than the starting torque T1, the intermediate shaft and the housing remain relatively stationary; when the intermediate shaft is subjected to a torque greater than or equal to the starting torque T1, the intermediate shaft starts to rotate.

[0005] In one or more of the above embodiments, the transmission device further includes a first conical bearing, which surrounds the mounting shaft of the driven bevel gear and presses the end face of the driven bevel gear so that the starting torque of the driven bevel gear is T2, and the difference between T1 and T2 is greater than or equal to 3N·m.

[0006] In one or more of the above embodiments, the transmission device further comprises a first gasket, which is mounted on the outer circumferential surface of the mounting shaft of the driven bevel gear, and the first gasket abuts against the end surface of the driven bevel gear and the end surface of the first bevel bearing respectively.

[0007] In one or more of the above embodiments, the transmission device further includes a second gasket, which is mounted on the outer circumference of the intermediate shaft and located below the intermediate shaft, and the second gasket abuts against the shoulder of the intermediate shaft and the end face of the first tapered bearing respectively.

[0008] In one or more of the above embodiments, the intermediate shaft is disposed in the housing, and one end of the mounting shaft of the driven bevel gear extends out of the housing.

[0009] An embodiment of the present application provides a bevel gear side clearance detection device for detecting the clearance between the driving bevel gear and the driven bevel gear of any transmission device. The bevel gear side clearance detection device comprises: a test plate, the test plate is used to be fixed to the driven bevel gear, the test plate has a test part; a positioning clamp, the positioning clamp is used to be installed on the outer surface of the shell; a detection component, the detection component is installed on the positioning clamp, and the detection component is connected to the test part to detect the reciprocating motion stroke of the test part.

[0010] In one or more of the above embodiments, a plurality of testing parts are provided, and the plurality of testing parts are evenly distributed around the rotation axis of the driven bevel gear.

[0011] In one or more of the above embodiments, the detection assembly includes a micrometer, which is fixed to the positioning clamp, and the micrometer has a probe, which is held against the testing part.

[0012] In one or more of the above embodiments, the test plate also includes a fixed part, the test part is located on the outer peripheral surface of the fixed part, and the fixed part is fixedly connected to the driven bevel gear; the probe is tangent to the outer peripheral surface of the fixed part, and when the driven bevel gear rotates, the micrometer displays the reciprocating rotation stroke of the test part.

[0013] In one or more of the above embodiments, the detection assembly includes a sensor, which is mounted on the positioning clamp and connected to the driven bevel gear to detect the rotation angle or rotation stroke of the driven bevel gear.

[0014] The transmission device provided by the present application realizes the torque difference between the driving bevel gear and the driven bevel gear through the adjustment gasket inside the transmission device without affecting the transmission efficiency of the transmission device. When the driven bevel gear is rotated by external force, the reciprocating motion stroke of the driven bevel gear is detected outside the housing, so that the gap size between the driving bevel gear and the driven bevel gear is obtained by conversion, thereby improving the testing convenience.

[0015] The transmission device and bevel gear side clearance detection device provided by the present application can rotate the driven bevel gear when an external force is used to rotate the driven bevel gear if there is a gap between the driving bevel gear and the driven bevel gear. During this process, the detection component can detect the reciprocating motion stroke of the test part outside the shell, so as to obtain the gap size between the driving bevel gear and the driven bevel gear by conversion, thereby realizing direct measurement of the bevel gear side clearance when the transmission device is assembled, thereby improving the convenience of testing. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1It is a schematic diagram of the overall structure of a transmission device in an embodiment of the present application.

[0017] Figure 2 yes Figure 1 Schematic diagram of the cross-sectional structure of the middle transmission device along Ⅱ-Ⅱ.

[0018] Figure 3 It is a front view of the assembly structure of a bevel gear backlash detection device and a transmission device in one embodiment of the present application.

[0019] Figure 4 It is a side view of the assembly structure of a bevel gear backlash detection device and a transmission device in one embodiment of the present application.

[0020] Figure 5 It is a simplified diagram of the assembly structure of a bevel gear backlash detection device and a transmission device in one embodiment of the present application. DETAILED DESCRIPTION

[0021] The following will describe the technical solutions in the embodiments of the present application in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. In the absence of conflict, the features in the following implementation modes and embodiments can be combined with each other.

[0022] Figure 1 A schematic diagram of the overall structure of a transmission device 100 in an embodiment of the present application is shown. Figure 2 Shows Figure 1 A schematic diagram of the cross-sectional structure of the middle transmission device 100 along II-II.

[0023] See also Figure 1 and Figure 2 An embodiment of the present application provides a transmission device 100, including a housing 11, a driving bevel gear 12 and a driven bevel gear 13 installed in the housing 11, and the driving bevel gear 12 is meshed with the driven bevel gear 13. A first direction X substantially parallel to the central axis of the driving bevel gear 12 and a second direction Y substantially parallel to the central axis of the driven bevel gear 13 are defined, and the first direction X is perpendicular to the second direction Y.

[0024] In one embodiment, the transmission device 100 further includes an input shaft 14, which is rotatably mounted on the housing 11 parallel to the first direction X and connected to a power system (not shown). The input shaft 14 includes an input portion 141 and a connecting portion 142, and an input gear 143 is coaxially arranged on the outer circumference of the connecting portion 142. The power system can be connected to the input portion 141 to drive the connecting portion 142 to rotate, thereby driving the input gear 143 to rotate.

[0025] In one embodiment, the transmission device 100 further includes an intermediate shaft 15 and a first intermediate gear 151. The intermediate shaft 15 is rotatably mounted in the housing 11 parallel to the first direction X. The first intermediate gear 151 is coaxially mounted on the outer circumference of the intermediate shaft 15, and the first intermediate gear 151 is meshed with the input gear 143. The driving bevel gear 12 is coaxially mounted on the outer circumference of the intermediate shaft 15. When the input gear 143 drives the first intermediate gear 151 to rotate, the driving bevel gear 12 rotates synchronously with the first intermediate gear 151.

[0026] In one embodiment, the transmission device 100 further includes a second intermediate gear 152 , which is coaxially mounted on the outer circumferential surface of the intermediate shaft 15 , so that the second intermediate gear 152 rotates synchronously with the first intermediate gear 151 and the driving bevel gear 12 .

[0027] In one embodiment, the second intermediate gear 152 is installed on the side of the driving bevel gear 12 away from the first intermediate gear 151. Since the installation directions of the driving bevel gear 12 and the driven bevel gear 13 are perpendicular to each other, the meshing surface of the driven bevel gear 13 occupies a large space in the first direction X. By installing the second intermediate gear 152 on the side of the driving bevel gear 12 away from the first intermediate gear 151, the second intermediate gear 152 can share space with the meshing surface of the driven bevel gear 13 in the second direction Y, thereby reducing the space occupancy rate of the driving bevel gear 12 and improving the compactness of the structure of the transmission device 100.

[0028] In one embodiment, the transmission device 100 further includes an output shaft 16 and an output gear 161. The output shaft 16 is used to connect to a traveling system (not shown) to drive the traveling system to move. The output shaft 16 is rotatably mounted on the housing 11 parallel to the first direction X. The output gear 161 is coaxially mounted on the outer circumference of the output shaft 16. The output gear 161 is meshed with the second intermediate gear 152. When the input gear 143 drives the first intermediate gear 151 and the second intermediate gear 152 to rotate, the second intermediate gear 152 drives the output gear 161 to rotate, so that the output gear 161 drives the output shaft 16 to rotate, thereby realizing the output of power.

[0029] In one embodiment, the driven bevel gear 13 includes a mounting shaft 131 and a meshing portion 132. The mounting shaft 131 is rotatably mounted on the housing 11, and one end of the mounting shaft 131 extends out of the housing 11. The meshing portion 132 meshes with the active bevel gear 12. When the input gear 143 drives the active bevel gear 12 to rotate, the active bevel gear 12 meshes with the meshing portion 132 to drive the mounting shaft 131 to rotate.

[0030] In one embodiment, the input shaft 14, the intermediate shaft 15, the output shaft 16 and the mounting shaft 131 are all mounted on the housing 11 via bearings, which may be tapered roller bearings. In another embodiment, the bearings may also be angular contact ball bearings or other bearings capable of bearing pressure on the end faces.

[0031] An embodiment of the present application further provides a bevel gear backlash detection device 200 for detecting a backlash between a driving bevel gear 12 and a driven bevel gear 13 installed in a housing 11 .

[0032] Figure 3 A front view of the assembly structure of a bevel gear backlash detection device 200 and a transmission device 100 in one embodiment of the present application is shown. Figure 4 A side view of the assembly structure of a bevel gear backlash detection device 200 and a transmission device 100 in one embodiment of the present application is shown.

[0033] See also Figure 3 and Figure 4 The bevel gear backlash detection device 200 includes a positioning clamping plate 21, a detection assembly 22, a fixing assembly 23 and a test plate 24. The positioning clamping plate 21 is mounted on the outer surface of the housing 11, the detection assembly 22 is mounted on the positioning clamping plate 21, and the fixing assembly 23 is used to fix the active bevel gear 12 so that the active bevel gear 12 remains fixed during the backlash detection process, that is, the active bevel gear 12 does not rotate during the backlash detection process.

[0034] Figure 5 A simplified diagram of the assembly structure of a bevel gear backlash detection device 200 and a transmission device 100 in one embodiment of the present application is shown.

[0035] See also Figure 4 and Figure 5 The test plate 24 is fixed to the outer peripheral surface of the driven bevel gear 13. The test plate 24 has a test portion 241. The distance from the test portion 241 to the central axis of the mounting shaft 131 is L1. The distance from the center point of the mutually meshing position of the active bevel gear 12 and the driven bevel gear 13 to the rotation axis of the driven bevel gear 13 is L2. L1 is proportional to L2. The detection component 22 is connected to the test portion 241 to detect the reciprocating stroke of the test portion 241. The active bevel gear 12 is fixed by using the fixing component 23. The distance from the test portion 241 to the rotation axis of the driven bevel gear 13 is proportional to the distance from the center point of the mutually meshing position of the active bevel gear 12 and the driven bevel gear 13 to the rotation axis of the driven bevel gear 13.

[0036] When an external force is used to rotate the driven bevel gear 13, if there is a gap between the meshing portion 132 of the active bevel gear 12 and the driven bevel gear 13, the driven bevel gear 13 can be rotated. In this process, the detection component 22 can detect the reciprocating stroke of the test portion 241 outside the housing 11, so as to obtain the gap size between the active bevel gear 12 and the driven bevel gear 13 by conversion, and realize the direct measurement of the bevel gear side clearance when the transmission device 100 is assembled, thereby improving the convenience of testing.

[0037] In one embodiment, L1=L2, and the stroke of the reciprocating motion of the test part 241 is the stroke of the clearance between the driving bevel gear 12 and the driven bevel gear 13. In another embodiment, L1=n*L2, that is, the distance from the test part 241 to the rotation axis of the driven bevel gear 13 and the distance from the center point of the mutually meshing position of the driving bevel gear 12 and the driven bevel gear 13 to the rotation axis of the driven bevel gear 13 can be any known value. When the value of L1 / L2 is smaller, the sensitivity of the detection component 22 to detect the reciprocating motion stroke of the test part 241 is higher, and the space occupied by the test plate 24 is larger. The distance from the test part 241 to the rotation axis of the driven bevel gear 13 is equal to the distance from the center point of the mutually meshing position of the driving bevel gear 12 and the driven bevel gear 13 to the rotation axis of the driven bevel gear 13, which is conducive to calculating the meshing clearance between the driving bevel gear 12 and the driven bevel gear 13.

[0038] In one embodiment, the test plate 24 further includes a fixing portion 242, the test portion 241 is located on the outer peripheral surface of the fixing portion 242, and the fixing portion 242 is fixedly connected to the mounting shaft 131 of the driven bevel gear 13. When the driven bevel gear 13 is able to rotate, since the fixing portion 242 is fixedly connected to the mounting shaft 131, the test portion 241 can rotate synchronously with the driven bevel gear 13.

[0039] In one embodiment, a plurality of testing portions 241 are provided, and the plurality of testing portions 241 are distributed on the outer circumference of the fixing portion 242 and are evenly distributed around the rotation axis of the driven bevel gear 13 .

[0040] In one embodiment, the detection assembly 22 includes a micrometer 211, which is fixed to the positioning clamping plate 21. The micrometer 211 has a probe 2121, and the probe 2121 is abutted against the testing portion 241. The probe 2121 is tangent to the outer peripheral surface of the fixing portion 242, so that the rotation direction of the abutment point between the probe 2121 and the testing portion 241 is parallel to the probe 2121. When the driven bevel gear 13 rotates, the micrometer 211 displays the rotation stroke of the reciprocating rotation of the testing portion 241, which is conducive to improving the sensitivity of the test.

[0041] In one embodiment, the detection component 22 includes a sensor (not shown), which is installed on the positioning clamp 21 and connected to the driven bevel gear 13, so as to detect the rotation angle or rotation stroke of the driven bevel gear 13 and directly output relevant data. The data can be directly converted through a computer program to obtain the clearance data between the driving bevel gear 12 and the driven bevel gear 13, thereby improving the convenience of testing.

[0042] In one embodiment, the fixing assembly 23 includes a locking rod, which extends into the housing 11 and blocks the rotation of the active bevel gear 12. Specifically, a pin hole is provided on the end surface of the active bevel gear 12, and the locking rod is inserted into the pin hole from the housing 11, thereby limiting the rotation of the active bevel gear 12.

[0043] In one embodiment, the outer peripheral surface of the locking rod is provided with threads, the housing 11 is provided with threaded holes, and the locking rod is threadedly connected with the threaded holes. By screwing the locking rod into the housing 11, the locking rod can be fixed to improve the convenience of operation.

[0044] An embodiment of the present application further provides a bevel gear backlash detection device 200 for detecting the backlash between the driving bevel gear 12 and the driven bevel gear 13 .

[0045] See also Figure 2 , Figure 4 and Figure 5 The bevel gear backlash detection device 200 includes a positioning clamping plate 21, a detection assembly 22, a first half shell 121, a second half shell 122, a fixing assembly 23 and a test plate 24.

[0046] The first half shell 121 and the second half shell 122 are enclosed to form a receiving cavity, which is used to receive the driving bevel gear 12 and the driven bevel gear 13. The first half shell 121 is located above the second half shell 122. The first half shell 121 and the second half shell 122 press the driving bevel gear 12 and the driven bevel gear 13 through the fixing assembly 23, so that the driving bevel gear 12 has a starting torque T1; when the intermediate shaft 15 is subjected to a torque less than the starting torque T1, the intermediate shaft 15 and the housing 11 remain relatively stationary; when the intermediate shaft 15 is subjected to a torque greater than or equal to the starting torque T1, the intermediate shaft 15 starts to rotate. The driven bevel gear 13 has a starting torque T2, T1-T2≥3N·m. In the initial stage of rotating the driven bevel gear 13, that is, when the starting torque of the driving bevel gear 12 minus the starting torque of the driving bevel gear 12 is less than 3N·m, the driving bevel gear 12 cannot rotate, so as to achieve the effect of fixing the driving bevel gear 12 within a certain torque range, thereby eliminating the need to open a hole in the first half shell 121 or the second half shell 122, and fixing the driving bevel gear 12 by a locking rod, thereby reducing the corresponding processing design, blocking parts design, and sealing design costs.

[0047] The positioning clamping plate 21 is mounted on the first half shell 121 or the second half shell 122. In this embodiment, the positioning clamping plate 21 is mounted on the upper surface of the first half shell 121. The detection assembly 22 is mounted on the positioning clamping plate 21, and the test plate 24 is fixed to the driven bevel gear 13. The test plate 24 has a test portion 241. The distance from the test portion 241 to the rotation axis of the driven bevel gear 13 is L1. The distance from the center point A of the position where the active bevel gear 12 and the driven bevel gear 13 are meshed with each other to the rotation axis of the driven bevel gear 13 is L2. L1 is proportional to L2. The detection assembly 22 is connected to the test portion 241 to detect the reciprocating stroke of the test portion 241. When an external force is used to rotate the driven bevel gear 13, if there is a gap between the driving bevel gear 12 and the driven bevel gear 13, the driven bevel gear 13 can be rotated. During this process, the detection component 22 can detect the reciprocating motion stroke of the test part 241 outside the housing 11, so as to obtain the gap size between the driving bevel gear 12 and the driven bevel gear 13 by conversion, thereby realizing direct measurement of the bevel gear side clearance when the transmission device 100 is assembled, thereby improving the convenience of testing.

[0048] In one embodiment, the transmission device 100 further includes a first conical bearing 17, which surrounds the mounting shaft 131 of the driven bevel gear 13 and presses the end surface of the driven bevel gear 13 so that the starting torque T2 of the driven bevel gear 13 is in the range of 0.5 N·m≤T2≤1.8 N·m.

[0049] In one embodiment, the transmission device 100 further includes a first gasket 171, which is mounted on the outer circumferential surface of the mounting shaft 131, and the first gasket 171 is respectively in contact with the end surface of the meshing portion 132 and the end surface of the first cone bearing 17. When the clearance between the active bevel gear 12 and the driven bevel gear 13 is not suitable during the clearance adjustment process, the first gasket 171 can be replaced to adjust the pressing force of the first cone bearing 17 on the driven bevel gear 13.

[0050] In one embodiment, the transmission device 100 further includes a second tapered bearing 18, which presses the end surface of the intermediate shaft 15, and the installation interference of the second tapered bearing 18 is set to 0.05mm-0.215mm.

[0051] In one embodiment, the second cone bearings 18 are provided at both ends of the intermediate shaft 15 so that the forces on both ends of the intermediate shaft 15 are uniform. When the first half shell 121 and the second half shell 122 are locked with each other, since the driving bevel gear 12 is installed on the intermediate shaft 15, the intermediate shaft 15 is subjected to the pressure of the driven bevel gear 13 pressing the intermediate shaft 15 in the second direction Y. The second cone bearings 18 can support the intermediate shaft 15 and have a force component that balances the above pressure to improve the movement stability of the intermediate shaft 15.

[0052] In one embodiment, the transmission device 100 further includes a second gasket 171, which is mounted on the outer circumferential surface of the intermediate shaft 15 and is located below the intermediate shaft 15, and the second gasket 171 abuts against the shaft shoulder of the intermediate shaft 15 and the end surface of the first cone bearing 17, respectively, so as to support the intermediate shaft 15. When the clearance between the driving bevel gear 12 and the driven bevel gear 13 is not suitable during the clearance adjustment process, the second gasket 171 can be replaced to adjust the upper and lower positions of the intermediate shaft 15, thereby adjusting the position of the driving bevel gear 12, so as to change the clearance between the driving bevel gear 12 and the driven bevel gear 13.

[0053] In one embodiment, the transmission device 100 includes an adjusting washer 19. Since the driving bevel gear 12 is mounted on the intermediate shaft 15, the adjusting washer 19 is disposed on a side of the intermediate shaft 15 close to the first half shell 121. When the first half shell 121 and the second half shell 122 are interlocked and locked, the first half shell 121 presses the adjusting washer 19, and the adjusting washer 19 presses the intermediate shaft 15, so that the intermediate shaft 15 has a starting torque T1 due to static friction.

[0054] In one embodiment, the fixing assembly 23 may be replaced by an adjusting shim 19 .

[0055] When testing the clearance between the driving bevel gear 12 and the driven bevel gear 13, by locking the first half shell 121 and the second half shell 122, the first half shell 121 and the second half shell 122 press the driving bevel gear 12 and the driven bevel gear 13 through the fixing assembly 23, so that the driving bevel gear 12 has a starting torque T1, and the driven bevel gear 13 has a starting torque T2, T1-T2≥3N·m, so that in the initial stage of rotating the driven bevel gear 13, that is, when the starting torque of the driving bevel gear 12 minus the starting torque of the driving bevel gear 12 is less than 3N·m, the driving bevel gear 12 cannot rotate, so as to achieve the effect of fixing the driving bevel gear 12 within a certain torque range. Use external force to rotate the driven bevel gear 13. If there is a gap between the driving bevel gear 12 and the driven bevel gear 13, the driven bevel gear 13 can be rotated. During this process, the detection component 22 can detect the reciprocating motion stroke of the test part 241 outside the shell 11, so as to obtain the gap size between the driving bevel gear 12 and the driven bevel gear 13 by conversion.

[0056] In addition, those skilled in the art may also make other changes within the technical concept of the present application. Of course, these changes made based on the technical concept of the present application should be included in the scope disclosed in the present application.

Claims

1. A transmission device, comprising: An intermediate shaft, wherein the intermediate shaft extends along a preset direction; A driving bevel gear, wherein the driving bevel gear is mounted on the intermediate shaft; A driven bevel gear, the driven bevel gear meshing with the driving bevel gear; A housing, wherein the driving bevel gear and the driven bevel gear are both arranged in the housing; It is characterized in that The transmission device also includes an adjusting gasket, which is arranged at one end of the intermediate shaft and is used to press the intermediate shaft and the housing so that the intermediate shaft has a starting torque T1; when the intermediate shaft is subjected to a torque less than the starting torque T1, the intermediate shaft and the housing remain relatively stationary; when the intermediate shaft is subjected to a torque greater than or equal to the starting torque T1, the intermediate shaft starts to rotate.

2. The transmission device according to claim 1, characterized in that: The transmission device further includes a first cone bearing, which surrounds the mounting shaft of the driven bevel gear and presses the end surface of the driven bevel gear so that the starting torque of the driven bevel gear is T2, and the difference between T1 and T2 is greater than or equal to 3N·m.

3. The transmission device according to claim 2, characterized in that: The transmission device further includes a first gasket, which is mounted on the outer peripheral surface of the mounting shaft of the driven bevel gear, and the first gasket abuts against the end surface of the driven bevel gear and the end surface of the first bevel bearing respectively.

4. The transmission device according to claim 3, characterized in that: The transmission device further comprises a second gasket, which is mounted on the outer circumferential surface of the intermediate shaft and is located below the intermediate shaft, and the second gasket abuts against the shaft shoulder of the intermediate shaft and the end surface of the first tapered bearing respectively.

5. The transmission device according to claim 1, characterized in that: The intermediate shaft is arranged in the housing, and one end of the mounting shaft of the driven bevel gear extends out of the housing.

6. A bevel gear backlash detection device, used for detecting the gap between the driving bevel gear and the driven bevel gear of the transmission device according to any one of claims 1 to 5, the bevel gear backlash detection device comprising: A test plate, the test plate is used to be fixed to the driven bevel gear, and the test plate has a test portion; A positioning clamping plate, the positioning clamping plate is used to be installed on the outer surface of the shell; A detection component is installed on the positioning clamp plate, and the detection component is connected to the test part to detect the reciprocating motion stroke of the test part.

7. The bevel gear backlash detection device according to claim 6, characterized in that: A plurality of the testing parts are provided, and the plurality of testing parts are evenly distributed around the rotation axis of the driven bevel gear.

8. The bevel gear backlash detection device according to claim 6, characterized in that: The detection component comprises a micrometer, the micrometer is fixed to the positioning clamp, the micrometer has a probe, and the probe is supported by the testing part.

9. The bevel gear backlash detection device according to claim 8, characterized in that: The test plate also includes a fixing portion, the test portion is located on the outer circumferential surface of the fixing portion, and the fixing portion is fixedly connected to the driven bevel gear; the probe is tangent to the outer circumferential surface of the fixing portion, and when the driven bevel gear rotates, the micrometer displays the reciprocating rotation stroke of the test portion.

10. The bevel gear backlash detection device according to claim 8, characterized in that: The detection assembly comprises a sensor, the sensor is mounted on the positioning clamping plate, and the sensor is connected to the driven bevel gear to detect the rotation angle or rotation stroke of the driven bevel gear.

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