A gap measurement system
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG LEAPMOTOR TECH CO LTD
- Filing Date
- 2025-08-08
- Publication Date
- 2026-07-14
Smart Images
Figure CN224499353U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of component inspection technology, specifically to a gap measurement system. Background Technology
[0002] With the rapid development of the automotive industry, cars are becoming increasingly electrified, intelligent, and lightweight, while people are paying more attention to the comfort of cars. Electric vehicles, due to their fast response and high torque, often suffer from problems such as gear knocking, tooth knocking, and roaring. The gear backlash of the reducer assembly is an important factor affecting the NVH (Noise, Vibration, Harshness) performance of the entire vehicle. If the gear backlash is too small, the gear meshing surface will not be adequately lubricated, which can easily lead to scuffing, uneven friction, and roaring. If the gear backlash is too large, it will cause serious vibration and abnormal noise problems.
[0003] Existing test results for reducer assembly clearance are inaccurate and cannot truly reflect the clearance of the reducer assembly. Therefore, there is a need to provide a reliable clearance measurement system to detect the clearance of the reducer gear assembly, realize product quality monitoring, and avoid vehicle NVH problems caused by reducer gear assembly clearance. Utility Model Content
[0004] This application provides a clearance measurement system that can improve the accuracy and reliability of the clearance measurement results of reducers.
[0005] This application provides a clearance measurement system for measuring the clearance of a reducer assembly, the clearance measurement system comprising:
[0006] Test fixture;
[0007] A connecting assembly for connecting to the input end of the reducer, the connecting assembly including a sleeve and a tightening member, the sleeve being fitted onto the drive shaft of the input end, and the tightening member being fitted onto the outer periphery of the sleeve;
[0008] A fixing component is used to connect to the first output end of the reducer. The fixing component includes a first plug and a first expansion member. The first plug is inserted into the first transmission sleeve of the first output end and is fixedly connected to the reducer. The first expansion member passes through the first plug.
[0009] The socket has an internal spline, and the tightening member is configured to tighten the socket and engage its internal spline with the external spline of the drive shaft; the first insertion member has an external spline, and the first expansion member is configured to expand the first insertion member and engage its external spline with the internal spline of the first drive sleeve.
[0010] In one embodiment of this application, the socket is a sleeve-shaped structure, and the socket is provided with at least one tightening channel;
[0011] The tightening member has a ring structure and at least one adjusting member is installed on it. The tightening member is configured to tighten the sleeve through the adjusting member.
[0012] In one embodiment of this application, the tightening channel is a strip groove arranged along the axial direction of the socket; and / or,
[0013] The adjusting component is a tightening bolt, and the tightening component has a threaded hole.
[0014] In one embodiment of this application, the sleeve is provided with an adjusting end relative to the other end of the drive shaft; and / or,
[0015] A gap reading element is provided on the reducer at the input end, and an indicator element is provided on the tightening element.
[0016] In one embodiment of this application, the first connector is a columnar structure, the first connector has a first through hole inside, and the first connector has at least one first expansion channel;
[0017] The first expansion member is a columnar structure, and one end of the first expansion member has a first expansion end. The first expansion member is configured to expand the first connector through the first expansion end.
[0018] In one embodiment of this application, the first perforation has a first expansion surface, and the first expansion surface and the first expansion channel are located at the same end of the first connector; and / or,
[0019] The first expansion channel is a strip groove arranged along the axial direction of the first connector; and / or,
[0020] The first expansion member is an expansion bolt, the first expansion end is the end of the expansion bolt, and the first expansion end is tapered. A first expansion nut is installed on the expansion bolt.
[0021] In one embodiment of this application, the fixing component further includes a first fixing plate, and a plurality of first fixing parts are provided on the side of the reducer. The first fixing plate and the first fixing parts are fixed together. The first plug-in has a first connecting end, and the first connecting end is fixed to the first fixing plate.
[0022] In one embodiment of this application, the reducer further has a second output end, and a second transmission sleeve with an internal spline is disposed in the second output end. The fixing component is also used to connect to the second output end of the reducer. The fixing component further includes a second plug and a second expansion member disposed at the second output end. The second plug is inserted into the second transmission sleeve and is fixedly connected to the reducer. The second expansion member passes through the second plug.
[0023] The second connector has an external spline, and the second expansion member is configured to engage the external spline of the second connector with the internal spline of the second transmission sleeve.
[0024] In one embodiment of this application, the second connector is a columnar structure, the second connector has a second through hole inside, and the second connector has at least one second expansion channel;
[0025] The second expansion member is a columnar structure, and one end of the second expansion member has a second expansion end. The second expansion member is configured to expand the second connector through the second expansion end.
[0026] In one embodiment of this application, the second perforation has a second expansion surface, and the second expansion surface and the second expansion channel are located at the same end of the second connector; and / or,
[0027] The second expansion channel is a strip groove arranged along the axial direction of the second connector; and / or,
[0028] The second expansion member is an expansion bolt, the second expansion end is the end of the expansion bolt, and the second expansion end is tapered. A second expansion nut is installed on the expansion bolt.
[0029] In one embodiment of this application, the fixing component further includes a second fixing plate, and a plurality of second fixing parts are provided on the side of the reducer. The second fixing plate and the second fixing parts are fixed together. The second plug-in has a second connecting end, and the second connecting end is fixed to the second fixing plate.
[0030] The beneficial effects of this application are as follows: By adjusting the tightening part and the socket, the socket can be tightened, allowing the internal spline of the socket to mesh with the external spline of the reducer's drive shaft, thus avoiding any gap at the spline connection between the socket and the reducer's input shaft. By adjusting the first insert and the first expansion part, the first insert can be expanded, allowing the external spline of the first insert to mesh with the internal spline of the reducer's first transmission sleeve, again avoiding any gap at the spline connection between the first insert and the reducer's first transmission sleeve. Simultaneously, by directly and fixedly connecting the first insert to the reducer, rather than to the test frame, the accuracy of the reducer assembly clearance measurement is avoided due to installation errors between the reducer and the test frame, as well as manufacturing errors of the test frame. This improves the authenticity and reliability of the clearance measurement results from the clearance detection system, effectively monitors product quality, and avoids vehicle NVH problems caused by reducer gear assembly clearance factors. Attached Figure Description
[0031] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0032] Figure 1 This is a schematic diagram of the structure of an embodiment of the gap measurement system of this application from one perspective;
[0033] Figure 2 This is a schematic diagram of the reducer of the clearance measurement system shown in this application mounted on the test frame from one perspective;
[0034] Figure 3 yes Figure 1 A schematic diagram of the exploded structure from one perspective of the gap measurement system shown.
[0035] Figure 4 yes Figure 1 A schematic diagram of the exploded structure of the gap measurement system shown from another perspective;
[0036] Figure 5 This is a schematic diagram of the structure of the sleeve and tightening member in the gap measurement system shown in this application;
[0037] Figure 6 This is a schematic diagram of the structure of the first connector and the first expansion member in the gap measurement system shown in this application;
[0038] Figure 7 This is a schematic diagram of the structure of the first connector in the gap measurement system shown in this application;
[0039] Figure 8 yes Figure 1 A schematic diagram of the gap measurement system from another perspective;
[0040] Figure 9 This is a schematic diagram of the reducer of the clearance measurement system shown in this application mounted on the test frame from another perspective;
[0041] Figure 10 This is a schematic diagram of the structure of the second connector and the second expansion member in the gap measurement system shown in this application;
[0042] Figure 11 This is a schematic diagram of the structure of the second connector in the gap measurement system shown in this application.
[0043] Explanation of reference numerals in the attached figures:
[0044] 10. Test fixture; 20. Reducer; 21. Input end; 211. Drive shaft; 22. First output end; 221. First transmission sleeve; 23. Second output end; 231. Second transmission sleeve; 24. Gap reading element; 26. First fixing part; 27. Second fixing part; 28. First fixing plate; 29. Second fixing plate; 30. Socket; 31. Tightening channel; 32. Adjusting end; 40. Tightening element; 41. Adjusting element; 42. Threaded hole; 43. Indicator; 50. First insertion part; 51. First through hole; 511. First expansion surface; 52. 53. First expansion channel; 54. First connecting end; 55.1. First end face; 55.2. First connecting screw hole; 60. First expansion member; 61. First expansion end; 62. First expansion nut; 63. First washer; 70. Second plug-in member; 71. Second through hole; 711. Second expansion surface; 72. Second expansion channel; 73. Second connecting end; 731. Second end face; 732. Second connecting screw hole; 80. Second expansion member; 81. Second expansion end; 82. Second expansion nut; 83. Second washer; 90. Connecting assembly; 91. Fixing assembly. Detailed Implementation
[0045] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application. In addition, it should be understood that the specific embodiments described herein are only for illustration and explanation of this application and are not intended to limit this application. In this application, unless otherwise stated, directional terms such as "up," "down," "left," and "right" generally refer to up, down, left, and right in the actual use or working state of the device, specifically the drawing directions in the accompanying drawings.
[0046] In this application, unless otherwise expressly specified and limited, the terms "connected," "linked," "stacked," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two elements or the interaction between two elements. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.
[0047] The test results of the reducer assembly clearance in the existing technology generally include the reducer assembly clearance, the input shaft spline fit clearance, the output shaft spline fit clearance, the manufacturing error of the measuring base, and the installation error between the reducer and the measuring base, etc., which leads to poor accuracy of the reducer clearance measurement results and cannot truly reflect the clearance of the reducer assembly.
[0048] To solve the above problem, please refer to Figures 1 to 4 This application provides a clearance measurement system for measuring the clearance of a reducer 20 assembly. The clearance measurement system includes a test frame 10, a connecting assembly 90, and a fixing assembly 91.
[0049] Specifically, the test frame 10 is used to install the reducer 20. The test frame 10 may include a base placed on the ground and a support arm set on the base. The reducer 20 can be installed on the base through the support arm, thereby connecting the reducer 20 and the test frame 10.
[0050] The connecting assembly 90 is used to connect to the input end 21 of the reducer 20. The connecting assembly 90 includes a sleeve 30 and a tightening member 40. The sleeve 30 is sleeved on the drive shaft 211 of the input end 21, and the tightening member 40 is sleeved on the outer periphery of the sleeve 30. The sleeve 30 can be modified from a motor output shaft that matches the drive shaft 211, saving costs and shortening the manufacturing cycle. The sleeve 30 can drive the drive shaft 211 to rotate synchronously, thereby realizing the power input during the clearance measurement process of the reducer 20.
[0051] The fixing component 91 is used to connect to the first output end 22 of the reducer 20. The fixing component 91 includes a first plug-in 50 and a first expansion member 60. The first plug-in 50 is inserted into the first transmission sleeve 221 of the first output end 22 and is fixedly connected to the reducer 20. The first expansion member 60 passes through the first plug-in 50. The first plug-in 50 can be modified from a drive shaft moving joint that matches the transmission sleeve 221 of the reducer 20. This ensures a high-precision fit between the first plug-in 50 and the first transmission sleeve 221, reduces the spline fit error between the first transmission sleeve 221 of the reducer 20 and the first plug-in 50, improves the clearance measurement accuracy of the reducer 20, and saves costs and shortens the manufacturing period of the entire clearance measurement system. The first plug-in 50 can be fixedly connected to the reducer 20 through the first fixing part 26 on the reducer 20, thereby reducing the impact of the installation error between the reducer 20 and the test frame 10 and the manufacturing error of the test frame 10 on the clearance measurement of the reducer 20.
[0052] The socket 30 has an internal spline, and the tightening member 40 is configured to tighten the socket 30 and make its internal spline engage with the external spline of the drive shaft 211; the first insertion member 50 has an external spline (not shown in the figure), and the first expansion member 60 is configured to expand the first insertion member 50 and make its external spline engage with the internal spline of the first transmission sleeve 221.
[0053] Through the above-described method, by adjusting the tightening member 40 and the socket 30, the socket 30 can be tightened, allowing the internal spline of the socket 30 to mesh with the external spline of the drive shaft 211 of the reducer 20, thus preventing any gap at the spline connection between the socket 30 and the input shaft of the reducer 20. By adjusting the first insertion member 50 and the first expansion member 60, the first insertion member 50 can be expanded, allowing the external spline of the first insertion member 50 to mesh with the internal spline of the first transmission sleeve 221 of the reducer 20, thus preventing any gap between the first insertion member 50 and the input shaft of the reducer 20. There is a gap at the spline connection of the first transmission sleeve 221 of the reducer 20. At the same time, the first plug-in 50 is directly fixedly connected to the reducer 20 instead of the test frame 10. This avoids the impact of installation errors between the reducer 20 and the test frame 10 and manufacturing errors of the test frame 10 on the accuracy of the reducer 20 assembly gap measurement. This can improve the authenticity and reliability of the gap measurement results of the reducer 20 by the gap detection system, effectively monitor product quality, and avoid the vehicle NVH problems caused by the gear assembly gap of the reducer 20.
[0054] In one embodiment, please refer to Figure 5The socket 30 has a cylindrical structure and at least one tightening channel 31. The cylindrical socket 30 has an internal spline that matches the external spline of the drive shaft 211. When the socket 30 is fitted onto the drive shaft 211, the internal spline of the socket 30 can engage with the external spline of the drive shaft 211. The tightening channel 31 allows the socket 30 to contract under external force, resulting in a tighter engagement between the internal spline and the external spline of the drive shaft 211, reducing the clearance at the spline connection.
[0055] The tightening member 40 is an annular structure, and at least one adjusting member 41 is installed on the tightening member 40. The tightening member 40 is configured to tighten the socket 30 through the adjusting member 41. The annular tightening member 40 can be fitted around the outer periphery of the socket 30. The socket 30 located inside the tightening member 40 can reduce the tightening channel 31 through the squeezing action of the adjusting member 41, thereby achieving its own structural tightening. This allows its internal spline to tightly engage with the external spline of the drive shaft 211, preventing the spline clearance at the connection between the input end 21 of the reducer 20 and the socket 30 from affecting the accuracy of the reducer 20 assembly clearance measurement.
[0056] In one embodiment, please continue to refer to Figure 5 The tightening channel 31 is a strip groove arranged along the axial direction of the sleeve 30. Specifically, there can be four strip grooves, and the strip grooves are arranged at one end of the sleeve 30 for fitting onto the drive shaft 211. The four strip grooves can be evenly arranged at the end of the sleeve 30, so that the end of the sleeve 30 that fits onto the drive shaft 211 can be tightened to reduce the gap at the spline connection between the sleeve 30 and the drive shaft 211.
[0057] The adjusting component 41 is a tightening bolt, and the tightening component 40 has a threaded hole 42. Specifically, there can be two threaded holes 42, and tightening bolts 41 are installed in both threaded holes 42. When the tightening component 40 is sleeved on the sleeve 30, the tightening bolts 41 compress the sleeve 30 on both sides of the tightening channel 31, causing deformation at the connection between the tightening component 40 and the drive shaft 211, which facilitates the tightening of the sleeve 30, realizes the tight engagement between the inner spline of the sleeve 30 and the outer spline of the drive shaft 211, and improves the synchronization of power transmission between the drive shaft 211 and the sleeve 30.
[0058] In one embodiment, please refer to Figures 1 to 3 as well as Figure 5 The other end of the socket 30 relative to the drive shaft 211 is provided with an adjusting end 32. Specifically, the adjusting end 32 and the socket 30 can be manufactured by integral molding. The adjusting end 32 can be a structure including but not limited to a regular hexagonal prism, so that it is convenient to adjust the rotation of the socket 30 using tools such as wrenches or sockets.
[0059] A gap reading element 24 is provided on the reducer 20 at the input end 21, and an indicator 43 is provided on the tightening member 40. Specifically, the gap reading element 24 can be a circular dial, which is installed on the same side of the reducer 20 as the input end 21. The circular dial coincides with the axis of the transmission shaft 211, and a through hole corresponding to the input end 21 of the reducer 20 is opened in the center of the circular dial. The indicator 43 can be a pointer set on the tightening member 40. The pointer can rotate synchronously with the tightening member 40 and the socket 30. During the gap measurement of the reducer 20 assembly, when the socket 30 is rotated by a tool such as a wrench or socket, the tightening member 40 and the pointer rotate with the socket 30. The circular dial can be read by the pointer, which facilitates the measurement of the gap of the reducer 20 assembly. The gap reading method using a pointer and a circular dial avoids the problems of inaccurate calibration and inconvenient fixation that sometimes exist when using electronic angle instruments.
[0060] In one embodiment, please refer to Figure 6 and Figure 7 The first connector 50 has a columnar structure and a first through hole 51 inside. The first connector 50 also has at least one first expansion channel 52. Specifically, the first through hole 51 is arranged along the axial direction of the first connector 50, and the first expansion channel 52 extends from the outer wall of the first connector 50 to the first through hole 51. This allows the first connector 50 to expand its structure through the first expansion channel 52, achieving a tight engagement between the external spline of the first connector 50 and the internal spline of the first transmission sleeve 221. This reduces the gap at the spline connection between the first transmission sleeve 221 and the first connector 50, improving the accuracy of the clearance measurement of the reducer 20 assembly.
[0061] The first expansion member 60 is a columnar structure, with a first expansion end 61 at one end. The first expansion member 60 is configured to expand the first connector 50 through the first expansion end 61. Specifically, the first expansion member 60 can pass through the first connector 50 through the first through hole 51. The first expansion end 61 and the first expansion channel 52 are located at the same end of the first expansion member 60. By adjusting the first expansion member 60, the end action of the first expansion end 61 and the first connector 50 can be adjusted, further distancing the first connector 50 on both sides of the first expansion channel 52. The expansion at the connection between the first connector 50 and the first transmission sleeve 221 achieves a tight engagement between the external spline of the first connector 50 and the internal spline of the first transmission sleeve 221, preventing the spline clearance at the connection between the first output end 22 of the reducer 20 and the first connector 50 from affecting the accuracy of the reducer 20 assembly clearance measurement.
[0062] In one embodiment, please continue to refer to Figure 6 and Figure 7The first perforation 51 has a first expansion surface 511, and the first expansion surface 511 and the first expansion channel 52 are located at the same end of the first connector 50. Specifically, the first expansion surface 511 is an inclined surface provided at the end of the first perforation 51. The provision of the first expansion surface 511 can increase the contact area between the first expansion end 61 and the end of the first perforation 51, reduce the stress on the contact surface of the first expansion end 61 and the first perforation 51, and reduce the wear of the contact surface of the two.
[0063] The first expansion channel 52 is a strip groove arranged along the axial direction of the first connector 50. Specifically, the strip groove can extend from the outer wall of the first connector 50 into the first through hole 51. There can be four strip grooves, which are evenly arranged at the ends of the first connector 50, so that the size of the first connector 50 between adjacent strip grooves remains the same. When the first expansion end 61 presses the first connector 50, the first connectors 50 with adjacent strip grooves of the same size are subjected to uniform force and can maintain the same deformation effect, so that the expansion degree of all external splines of the first connector 50 remains uniform, ensuring that the external splines on the outer periphery of the first connector 50 can correspond and mesh with the internal splines of the first transmission sleeve 221, improving the connection effect between the first connector 50 and the first transmission sleeve 221, and reducing the spline fit gap at the connection between the two.
[0064] The first expansion member 60 is an expansion bolt, and the first expansion end 61 is the end of the expansion bolt, and the first expansion end 61 is tapered. A first expansion nut 62 is installed on the expansion bolt. Specifically, the tapered first expansion end 61 facilitates the outward pressing of the first expansion end 61 against the first insertion member 50 between adjacent first expansion channels 52, which helps to achieve deformation and expansion at the end of the first insertion member 50, ensuring that the splines at the connection between the first insertion member 50 and the first transmission sleeve 221 can mesh with each other, reducing the fit clearance at the spline connection between the two. Through the cooperation of the expansion bolt and the first expansion nut 62, the first expansion member 60 can be adjusted. By tightening the first expansion nut 62, the first expansion end 61 can press against the first expansion surface 511 at the end of the first through hole 51, making the adjustment process convenient and quick.
[0065] In one embodiment, please refer to Figures 1 to 4 as well as Figure 7The fixing assembly 91 also includes a first fixing plate 28. A plurality of first fixing parts 26 are provided on the side of the reducer 20. The first fixing plate 28 and the first fixing parts 26 are fixed together. The first connector 50 has a first connecting end 53, which is fixed to the first fixing plate 28. Specifically, the first fixing part 26 is a threaded seat on the reducer 20 located on the side of the first output end 22. At least two threaded seats can be provided. The first fixing plate 28 can be fixed to the reducer 20 by bolts adapted to the threaded seats. An extension sleeve can be added between the first fixing part 26 and the first fixing plate 28. The bolt needs to pass through the extension sleeve before it can be connected to the first fixing part 26. Thus, the extension sleeve can separate the first fixing plate 28 and the reducer 20, preventing interference between the housing of the reducer 20 and the first fixing plate 28. The first connecting end 53 and the first plug-in 50 can be an integral structural component. The first connecting end 53 is provided with first connecting screw holes 532 evenly. The first connecting end 53 can be fixed to the first fixing plate 28 by bolts corresponding to the first connecting screw holes 532.
[0066] It should be noted that the first fixing plate 28 is provided with a clearance hole for the first expansion member 60 to pass through, so as to avoid the first fixing plate 28 blocking the first expansion member 60 and affecting the adjustment of the first expansion member 60.
[0067] In addition, a first end face 531 is provided inside the first connecting end 53. When the first expansion member 60 is an expansion bolt, a first pad 63 can also be provided at the first end face 531. The first pad 63 can be a sleeve-shaped structure. The first pad 63 is sleeved on the first expansion member 60. The first expansion nut 62 and the first connecting end 53 can be separated by a certain distance through the first pad 63, which is convenient for manual adjustment.
[0068] In one embodiment, please refer to Figures 8 to 10 The reducer 20 also has a second output end 23, within which a second transmission sleeve 231 with internal splines is disposed. A fixing assembly 91 is also used to connect to the second output end 23 of the reducer 20. The fixing assembly 91 further includes a second insertion member 70 and a second expansion member 80 disposed at the second output end 23. The second insertion member 70 is inserted into the second transmission sleeve 231 and is fixedly connected to the reducer 20. The second expansion member 80 passes through the second insertion member 70. The second insertion member 70 can also be modified from a half-shaft sliding joint that matches the transmission sleeve 231 of the reducer 20. This ensures a precise fit between it and the second transmission sleeve 231, reducing the spline fit error between the second transmission sleeve 231 and the second insertion member 70 of the reducer 20, and improving the clearance measurement accuracy of the reducer 20. The second insertion member 70 can be fixedly connected to the reducer 20 via a second fixing part 27 on the reducer 20.
[0069] The second connector 70 has an external spline (not shown in the figure), and the second expansion member 80 is configured to allow the external spline of the second connector 70 to engage with the internal spline of the second transmission sleeve 231. Through the adjustment and engagement of the second connector 70 and the second expansion member 80, the second connector 70 can expand, allowing its external spline to engage with the internal spline of the second transmission sleeve 231 of the reducer 20. This avoids gaps at the spline connection between the second connector 70 and the second transmission sleeve 231 of the reducer 20. Simultaneously, by directly and fixedly connecting the second connector 70 to the reducer 20 without connecting it to the test frame 10, the accuracy of the reducer 20 assembly gap measurement is avoided due to installation errors between the reducer 20 and the test frame 10, as well as manufacturing errors of the test frame 10.
[0070] Therefore, the second connector 70 and the second expansion member 80, together with the first connector 50 and the first expansion member 60, can not only reduce the spline fit clearance at the output end of the reducer 20, thus avoiding the spline fit clearance at the output end of the reducer 20 from affecting the accuracy of the reducer 20 assembly clearance measurement, but also avoid the accuracy of the reducer 20 assembly clearance measurement affected by factors such as the installation error between the reducer 20 and the test frame 10 and the manufacturing error of the test frame 10.
[0071] In one embodiment, please refer to Figure 10 and Figure 11 The second connector 70 has a columnar structure and a second through hole 71 inside. The second connector 70 also has at least one second expansion channel 72. Specifically, the second through hole 71 is arranged along the axial direction of the second connector 70, and the second expansion channel 72 extends from the outer wall of the second connector 70 to the second through hole 71. This allows the second connector 70 to expand its structure through the second expansion channel 72, achieving a tight engagement between the external spline of the second connector 70 and the internal spline of the second transmission sleeve 231. This reduces the gap at the spline connection between the second transmission sleeve 231 and the second connector 70, improving the accuracy of the clearance measurement of the reducer 20 assembly.
[0072] The second expansion member 80 has a columnar structure, with a second expansion end 81 at one end. The second expansion member 80 is configured to expand the second connector 70 through the second expansion end 81. Specifically, the second expansion member 80 can pass through the second connector 70 via the second through hole 71. The second expansion end 81 and the second expansion channel 72 are located at the same end of the second expansion member 80. Adjusting the second expansion member 80 allows the ends of the second expansion end 81 and the second connector 70 to act in unison, further distancing the second connector 70 on both sides of the second expansion channel 72. The expansion at the connection between the second connector 70 and the second transmission sleeve 231 achieves a tight engagement between the external spline of the second connector 70 and the internal spline of the second transmission sleeve 231, preventing the spline clearance at the connection between the second output end 23 of the reducer 20 and the second connector 70 from affecting the accuracy of the reducer 20 assembly clearance measurement.
[0073] In one embodiment, please continue to refer to Figure 10 and Figure 11 The second perforation 71 has a second expansion surface 711, and the second expansion surface 711 and the second expansion channel 72 are located at the same end of the second connector 70. Specifically, the second expansion surface 711 is an inclined surface provided at the end of the second perforation 71. The provision of the second expansion surface 711 can increase the contact area between the second expansion end 81 and the end of the second perforation 71, reduce the stress on the contact surface of the second expansion end 81 and the second perforation 71, and reduce the wear of the contact surface.
[0074] The second expansion channel 72 is a strip groove arranged along the axial direction of the second connector 70. Specifically, the strip groove can extend from the outer wall of the second connector 70 into the second through hole 71. There can be four strip grooves, which are evenly arranged at the ends of the second connector 70. This ensures that the dimensions of the second connector 70 between adjacent strip grooves are the same. When the second expansion end 81 presses the second connector 70, the second connectors 70 with adjacent strip grooves of the same size are subjected to uniform force and can maintain the same deformation effect. This ensures that the expansion degree of all external splines of the second connector 70 is uniform, and that the external splines on the outer periphery of the second connector 70 can mesh with the internal splines of the second transmission sleeve 231. This improves the connection effect between the second connector 70 and the second transmission sleeve 231 and reduces the spline fit gap at the connection between the two.
[0075] The second expansion member 80 is an expansion bolt, and the second expansion end 81 is the end of the expansion bolt, with the second expansion end 81 being tapered. A second expansion nut 82 is installed on the expansion bolt. Specifically, the tapered second expansion end 81 facilitates the outward pressing of the second insertion member 70 between adjacent second expansion channels 72, which helps to achieve deformation and expansion at the end of the second insertion member 70. This ensures that the splines at the connection between the second insertion member 70 and the second transmission sleeve 231 can mesh with each other, reducing the fit clearance at the spline connection. The second expansion member 80 can be adjusted through the cooperation of the expansion bolt and the second expansion nut 82. Tightening the second expansion nut 82 allows the second expansion end 81 to press against the second expansion surface 711 at the end of the second through hole 71, making the adjustment process convenient and quick.
[0076] In one embodiment, please refer to Figure 3 , Figure 4 , Figure 8 , Figure 9 and Figure 10 The fixing assembly 91 also includes a second fixing plate 29. Several second fixing parts 27 are provided on the side of the reducer 20. The second fixing plate 29 and the second fixing parts 27 are fixed together. The second connector 70 has a second connecting end 73, which is fixed to the second fixing plate 29. Specifically, the second fixing part 27 is a threaded seat on the reducer 20 located on the side of the second output end 23. At least two threaded seats can be provided. The second fixing plate 29 can be fixed to the reducer 20 by bolts that fit the threaded seats. The second connecting end 73 and the second connector 70 can be an integral structural component. The second connecting end 73 has evenly distributed second connecting screw holes 732. The second connecting end 73 can be fixed to the second fixing plate 29 by bolts corresponding to the second connecting screw holes 732.
[0077] It should be noted that the second fixing plate 29 is also provided with a clearance hole for the second expansion member 80 to pass through, so as to avoid the second fixing plate 29 from blocking the second expansion member 80 and affecting the adjustment of the second expansion member 80.
[0078] In addition, a second end face 731 is provided inside the second connecting end 73. When the second expansion member 80 is an expansion bolt, a second pad 83 can also be provided at the second end face 731. The second pad 83 can be a sleeve-shaped structure. The second pad 83 is sleeved on the second expansion member 80. The second expansion nut 82 and the second connecting end 73 can be separated by a certain distance through the second pad 83, which is convenient for manual adjustment.
[0079] The method of using this gap measurement system is as follows:
[0080] Fix the reducer 20 onto the test frame 10. Insert the first expansion member 60 and the second expansion member 80 into the first connector 50 and the second connector 70, respectively. Then insert the first connector 50 and the second connector 70 into the first transmission sleeve 221 and the second transmission sleeve 231 of the reducer 20, respectively. Install the first expansion nut 62 and the second expansion nut 82 onto the first expansion member 60 and the second expansion member 80. Note that the first expansion nut 62 and the second expansion nut 82 should not be tightened during this process. Connect the first connecting end 53 and the second connecting end 73 to the first fixing plate 28 and the second fixing plate 29 with bolts that are adapted to the first connecting screw hole 532 and the second connecting screw hole 732, respectively. Fix the first fixing plate 28 and the second fixing plate 29 to the reducer 20 with bolts that are adapted to the first fixing part 26 and the second fixing part 27, respectively.
[0081] The socket 30 is installed on the drive shaft 211 inside the output end of the reducer 20. The tightening member 40 is sleeved on the socket 30. The adjusting member 41 is used to tighten the socket 30 and make its inner spline and the outer spline of the drive shaft 211 tightly mesh.
[0082] Install the gap reading element 24 on the input end 21 of the reducer 20 so that it corresponds to the indicator 43 on the tightening element 40.
[0083] Adjust the adjusting end 32 of the socket 30 using a torque wrench or similar tool, and apply a specified torque to the socket 30 using the torque wrench or similar tool. While continuously applying torque to the socket 30 using a torque wrench, tighten the first expansion nut 62 and the second expansion nut 82 respectively, so that the external splines of the first insertion piece 50 and the second insertion piece 70 and the internal splines of the first transmission sleeve 221 and the second transmission sleeve 231 engage with each other.
[0084] Apply the test torque clockwise using a torque wrench or similar tool, and record the angle reading of the pointer on the circular dial as A; apply the test torque counterclockwise using a torque wrench or similar tool, and record the angle reading of the pointer on the circular dial as B. The angle AB is the clearance of the reducer 20 assembly under this test torque.
[0085] The gap measurement system provided in this application has been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.
Claims
1. A gap measurement system, characterized in that, The clearance measuring system is used to measure the clearance of the reducer (20) assembly, and includes: Test fixture (10); A connecting assembly (90) is used to connect to the input end (21) of the reducer (20). The connecting assembly (90) includes a sleeve (30) and a tightening member (40). The sleeve (30) is sleeved on the drive shaft (211) of the input end (21), and the tightening member (40) is sleeved on the outer periphery of the sleeve (30). A fixing component (91) is used to connect to the first output end (22) of the reducer (20). The fixing component (91) includes a first plug (50) and a first expansion member (60). The first plug (50) is inserted into the first transmission sleeve (221) of the first output end (22). The first plug (50) is fixedly connected to the reducer (20). The first expansion member (60) passes through the first plug (50). The socket (30) has an internal spline, and the tightening member (40) is configured to tighten the socket (30) and make its internal spline engage with the external spline of the drive shaft (211); the first plug (50) has an external spline, and the first expansion member (60) is configured to expand the first plug (50) and make its external spline engage with the internal spline of the first drive sleeve (221).
2. The gap measuring system according to claim 1, characterized in that, The socket (30) is a sleeve-shaped structure, and the socket (30) is provided with at least one tightening channel (31); The tightening member (40) has a ring structure and at least one adjusting member (41) is installed on the tightening member (40). The tightening member (40) is configured to tighten the sleeve (30) by means of the adjusting member (41).
3. The gap measuring system according to claim 2, characterized in that, The tightening channel (31) is a strip groove arranged along the axial direction of the sleeve (30); and / or, The adjusting component (41) is a tightening bolt, and the tightening component (40) has a threaded hole (42).
4. The gap measuring system according to claim 2, characterized in that, The sleeve (30) is provided with an adjusting end (32) at the other end opposite to the drive shaft (211); and / or, A gap reading element (24) is provided on the reducer (20) at the input end (21), and an indicator element (43) is provided on the tightening element (40).
5. The gap measuring system according to claim 1, characterized in that, The first plug-in (50) is a columnar structure, and the first plug-in (50) has a first through hole (51) inside, and the first plug-in (50) has at least one first expansion channel (52); The first expansion member (60) is a columnar structure, and one end of the first expansion member (60) has a first expansion end (61). The first expansion member (60) is configured to expand the first plug (50) through the first expansion end (61).
6. The gap measuring system according to claim 5, characterized in that, The first perforation (51) has a first expansion surface (511), and the first expansion surface (511) and the first expansion channel (52) are located at the same end of the first connector (50); and / or, The first expansion channel (52) is a strip groove arranged axially along the first connector (50); and / or, The first expansion member (60) is an expansion bolt, the first expansion end (61) is the end of the expansion bolt, and the first expansion end (61) is tapered. A first expansion nut (62) is installed on the expansion bolt.
7. The gap measuring system according to claim 5, characterized in that, The fixing component (91) further includes a first fixing plate (28), and the reducer (20) has a plurality of first fixing parts (26) on its side. The first fixing plate (28) and the first fixing parts (26) are fixed together. The first plug-in (50) has a first connecting end (53), and the first connecting end (53) is fixed together with the first fixing plate (28).
8. The gap measuring system according to claim 1, characterized in that, The reducer (20) also has a second output end (23), and a second transmission sleeve (231) with an internal spline is provided in the second output end (23). The fixing component (91) is also used to connect with the second output end (23) of the reducer (20). The fixing component (91) also includes a second plug (70) and a second expansion member (80) provided at the second output end (23). The second plug (70) is inserted into the second transmission sleeve (231). The second plug (70) is fixedly connected to the reducer (20). The second expansion member (80) passes through the second plug (70). The second connector (70) has an external spline, and the second expansion member (80) is configured to engage the external spline of the second connector (70) with the internal spline of the second transmission sleeve (231).
9. The gap measuring system according to claim 8, characterized in that, The second connector (70) is a columnar structure, and the second connector (70) has a second through hole (71) inside and at least one second expansion channel (72). The second expansion member (80) is a columnar structure, and one end of the second expansion member (80) has a second expansion end (81). The second expansion member (80) is configured to expand the second connector (70) through the second expansion end (81).
10. The gap measuring system according to claim 9, characterized in that, The second perforation (71) has a second expansion surface (711), and the second expansion surface (711) and the second expansion channel (72) are located at the same end of the second connector (70); and / or, The second expansion channel (72) is a strip groove arranged axially along the second connector (70); and / or, The second expansion member (80) is an expansion bolt, the second expansion end (81) is the end of the expansion bolt, and the second expansion end (81) is tapered. A second expansion nut (82) is installed on the expansion bolt.
11. The gap measuring system according to claim 9, characterized in that, The fixing component (91) further includes a second fixing plate (29). The reducer (20) has a plurality of second fixing parts (27) on its side. The second fixing plate (29) and the second fixing parts (27) are fixed together. The second plug-in (70) has a second connecting end (73). The second connecting end (73) is fixed together with the second fixing plate (29).