Gearbox shift test mechanism
Patent Information
- Application Number
- CN202522326044.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-03
- Publication Date
- 2026-09-29
- Estimated Expiration
- 2035-11-03
AI Technical Summary
现有技术针对机械式变速箱、机械自动式变速箱进行换挡测试的机构过于繁琐，并且无法直观准确地获取我们想要的参数，包括换挡行程、换挡力矩
[0006]采用本实用新型的方案后，在仅进行换挡形成检测时，换挡施力部件为换挡轴，换挡轴的底部固接于换挡转轴的外凸端，卡尺在初始位置下处于0刻度位置，换挡施力部件带动换挡轴转动时，换挡轴固接的传动结构驱动换挡拨块拨动拨叉组件进行挡位切换，换挡拨块同时驱动卡尺拨块移动，进而驱动卡尺在千分尺上移动，通过读数机构进行读数；需要进行换挡力矩测试时，换挡施力部件为数显扭矩扳手或扭矩测量仪时，换挡转轴的外凸端通过六角接头固接数显扭矩扳手或扭矩测量仪，拨动数显扭矩扳手或扭矩测量仪使得换挡拨块带动拨叉组件进行挡位切换，即可快速获得对应换挡机构的换挡力矩；该机构可方便、精确地测量变速箱换挡部分的功能参数，包括换挡行程、换挡力矩，操作简单，且针对换挡部分的实用性强。
Smart Images
Figure CN224815941U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of gearbox testing, specifically to a gearbox shifting test mechanism. Background Technology
[0002] The shift mechanism is one of the core components of a mechanical transmission. Its ability to shift and engage gears directly affects the transmission's performance. Testing the shift mechanism is a necessary step during transmission testing and before the transmission rolls off the production line. Existing technologies for testing the shift mechanism in mechanical and mechanically automatic transmissions are overly complex and cannot provide a direct and accurate view of the desired parameters, including shift travel and shift torque. Obtaining these parameters in independent transmission testing, particularly for mechanical and mechanically automatic transmissions, requires a high level of expertise from the testing personnel and operators, and the testing mechanisms themselves have significant limitations. Utility Model Content
[0003] To address the aforementioned problems, this utility model provides a gearbox shifting test mechanism, which can conveniently and accurately obtain the functional parameters of the gearbox shifting part, and has a simple structure and good versatility.
[0004] A gearbox shifting test mechanism, characterized in that it comprises: Main support plate, which is used to adapt the gearbox installation; Micrometer mounting bracket; A micrometer includes a reading mechanism, calipers, and caliper levers; The mounting bracket is installed on the upper part of the shift paddle. Shift shaft; Gear shifting force application components; and transmission structure; The main support plate is fixedly mounted on the upper part of the gearbox to be tested. The mounting base is fixedly mounted on the upper part of the shift block of the shift fork mechanism to be tested. The shift shaft is fixedly inserted into the mounting base. The upper part of the transmission structure is fixedly connected to the shift shaft. The lower part of the transmission structure protrudes from the main support plate and is embedded in the drive groove of the shift block. The micrometer mounting base is fixedly mounted on the upper surface of the main support plate, and the micrometer is fixedly mounted on the micrometer mounting base. The caliper is connected to the side protrusion of the caliper block. The vertical part of the caliper block is located in the mounting base, and the bottom of the vertical part of the caliper block is embedded in the drive groove of the shift block to be tested. The shifting force application component is fixedly sleeved on the outer protrusion of the shift shaft.
[0005] Its further features are: When only shift formation detection is performed, the shift force application component is a shift shaft, and the bottom of the shift shaft is fixed to the outer convex end of the shift rotating shaft; When the caliper is initially at the 0 mark position, the shifting force component drives the shifting shaft to rotate. The transmission structure fixed to the shifting shaft drives the shifting block to move the shift fork assembly to switch gears. The shifting block simultaneously drives the caliper shifting block to move, thereby driving the caliper to move on the micrometer. The reading is then taken through the reading mechanism. When the shifting force application component is a digital torque wrench or a torque measuring instrument, the outer convex end of the shifting shaft is fixed to the digital torque wrench or torque measuring instrument through a hexagonal connector. Moving the digital torque wrench or torque measuring instrument causes the shifting block to drive the shift fork assembly to switch gears, thereby quickly obtaining the shifting torque of the corresponding shifting mechanism. The upper surface of the main support plate is provided with notches and grooves corresponding to the positions of the gear shift mechanism of the gearbox. It is also equipped with several mechanism cover plates. When the corresponding gear shift mechanism is not tested, the mechanism cover plate is installed on the upper surface of the main support plate corresponding to the gear shift mechanism. The bottom of the mounting base has a hollow structure to ensure that the transmission structure and caliper lever can reliably be inserted into the drive slot of the shift lever after passing through the notch. Preferably, the drive groove of the shift lever is a flat keyway, and the width of the drive groove of the shift lever covers the transmission structure and the bottom structure of the caliper lever. When the driving operation is performed, a gap is left between the bottom of the transmission structure and the bottom of the caliper lever to ensure that the test results are accurate and reliable. It also includes a self-locking mechanism, which is pressed into the shift fork shaft of the corresponding shifting mechanism after passing through the positioning hole of the main support plate. The self-locking mechanism is a self-locking spring, a self-locking steel ball, or a self-locking pin. The self-locking mechanism can be used for shifting tests during gearbox testing and to maintain the gear for other tests. It is simple and convenient to operate.
[0006] With the solution of this utility model, when only shift formation detection is performed, the shift force application component is the shift shaft, and the bottom of the shift shaft is fixed to the outer convex end of the shift rotating shaft. The caliper is in the 0 mark position in the initial position. When the shift force application component drives the shift shaft to rotate, the transmission structure fixed to the shift shaft drives the shift paddle to move the shift fork assembly to switch gears. The shift paddle simultaneously drives the caliper paddle to move, thereby driving the caliper to move on the micrometer. The reading is obtained through the reading mechanism. When shift torque testing is required, the shift force application component is a digital torque wrench or torque measuring instrument. The outer convex end of the shift rotating shaft is fixed to the digital torque wrench or torque measuring instrument through a hexagonal connector. Moving the digital torque wrench or torque measuring instrument causes the shift paddle to drive the shift fork assembly to switch gears, thus quickly obtaining the shift torque of the corresponding shift mechanism. This mechanism can conveniently and accurately measure the functional parameters of the gearbox shift part, including shift stroke and shift torque. It is simple to operate and highly practical for the shift part. Attached Figure Description
[0007] Figure 1 This is a perspective view of the present utility model; Figure 2 This is a perspective view of the present invention after removing the main support plate, mounting base, and shift shaft. Figure 3 This is a cross-sectional structural diagram of the present invention; The names corresponding to the serial numbers in the diagram are as follows: Shift block 1, drive slot 101, shift fork mechanism 2; Main support plate 10, micrometer mounting base 20, micrometer 30, reading mechanism 31, caliper 32, caliper lever 33, side protrusion 331, vertical part 332, mounting base 40, shift shaft 50, transmission structure 60, shift shaft 70, mechanism cover plate 80, self-locking mechanism 90. Detailed Implementation
[0008] A gearbox shifting test mechanism, see Figures 1-3 It includes a main support plate 10, a micrometer mounting base 20, a micrometer 30, a mounting base 40, a shift shaft 50, a shift force application component, and a transmission structure 60. The main support plate 10 is used to adapt to the gearbox installation; The micrometer 30 includes a reading mechanism 31, a caliper 32, and a caliper lever 33; Mounting bracket 40 is installed on the upper part of the shift lever 1 to be tested; The main support plate 10 is fixedly mounted on the upper part of the gearbox to be tested. The mounting base 40 is fixedly mounted on the upper part of the shift block 1 of the shift fork mechanism 2 to be tested. The shift shaft 50 is fixedly inserted into the side of the mounting base 40. The upper part of the transmission structure 60 is fixedly connected to the shift shaft 50. The lower part of the transmission structure 60 protrudes from the main support plate 10 and is embedded in the drive groove 101 of the shift block 1. The micrometer mounting base 20 is fixedly mounted on the upper surface of the main support plate 10, and the micrometer 30 is fixedly mounted on the micrometer mounting base 20. The caliper 32 is connected to the side protrusion 331 of the caliper block 33. The vertical part 332 of the caliper block 33 is located in the mounting base 40, and the bottom of the vertical part 332 of the caliper block 33 is embedded in the drive groove 101 of the shift block 1 to be tested. The shifting force application component is fixedly sleeved on the outer protrusion end of the shift shaft 50.
[0009] In practice, when only shift formation detection is performed, the shift force application component is the shift shaft 70, and the bottom of the shift shaft 70 is fixed to the outer convex end of the shift shaft 50; When the caliper 32 is in the initial position at the 0 mark, the shifting force component drives the shifting shaft 50 to rotate. The transmission structure 60 fixed to the shifting shaft 50 drives the shifting block 1 to shift the shift fork assembly to switch gears. At the same time, the shifting block 1 drives the caliper block to move, thereby driving the caliper 32 to move on the micrometer 30. The reading is taken through the reading mechanism 31. When the shifting force application component is a digital torque wrench or a torque measuring instrument, the outer convex end of the shifting shaft 50 is fixed to the digital torque wrench or torque measuring instrument through a hexagonal connector. Moving the digital torque wrench or torque measuring instrument causes the shifting block 1 to drive the shift fork assembly to switch gears, thereby quickly obtaining the shifting torque of the corresponding shifting mechanism 2. The upper surface of the main support plate 10 is provided with notches and grooves corresponding to the positions of the gear shift mechanism 2 of the gearbox. It is also equipped with several mechanism cover plates 80. When the corresponding gear shift mechanism is not tested, the mechanism cover plate 80 is installed on the upper surface of the main support plate 10 corresponding to the gear shift mechanism 2. The bottom of the mounting base 40 has a hollow structure to ensure that the transmission structure 60 and the caliper lever 33 can be reliably inserted into the drive slot 101 of the shift lever 1 after passing through the notch.
[0010] In a specific embodiment, the drive groove 101 of the shift block 1 is a flat keyway. The width of the drive groove 101 of the shift block 1 covers the bottom structure of the transmission structure 60 and the caliper block 33. When the drive operation is performed, there is a gap between the bottom of the transmission structure 60 and the bottom of the caliper block 33 to ensure that the test results are accurate and reliable. It also includes a self-locking mechanism 90, which is pressed onto the shift fork shaft of the corresponding shift mechanism 2 after passing through the positioning hole of the main support plate 10. The self-locking mechanism 90 is a self-locking spring, a self-locking steel ball, or a self-locking pin. The self-locking mechanism can be used for shifting tests during gearbox testing and to maintain the gear for other tests. It is simple and convenient to operate.
[0011] Its working principle is as follows: When only shift formation detection is performed, the shift force application component is the shift shaft. The bottom of the shift shaft is fixed to the outer convex end of the shift rotating shaft. The caliper is in the 0 mark position in the initial position. When the shift force application component drives the shift shaft to rotate, the transmission structure fixed to the shift shaft drives the shift paddle to move the shift fork assembly to switch gears. The shift paddle simultaneously drives the caliper paddle to move, which in turn drives the caliper to move on the micrometer. The reading is obtained through the reading mechanism. When shift torque testing is required, the shift force application component is a digital torque wrench or torque measuring instrument. The outer convex end of the shift rotating shaft is fixed to the digital torque wrench or torque measuring instrument through a hexagonal connector. Moving the digital torque wrench or torque measuring instrument causes the shift paddle to drive the shift fork assembly to switch gears, thus quickly obtaining the shift torque of the corresponding shift mechanism. This mechanism can conveniently and accurately measure the functional parameters of the gearbox shift part, including shift stroke and shift torque. It is simple to operate and highly practical for the shift part.
[0012] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
[0013] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. A gearbox shifting test mechanism, characterized in that, It includes: Main support plate, which is used to adapt the gearbox installation; Micrometer mounting bracket; A micrometer includes a reading mechanism, calipers, and caliper levers; The mounting bracket is installed on the upper part of the shift paddle. Shift shaft; Gear shifting force application components; and transmission structure; The main support plate is fixedly mounted on the upper part of the gearbox to be tested. The mounting base is fixedly mounted on the upper part of the shift block of the shift fork mechanism to be tested. The shift shaft is fixedly inserted into the mounting base. The upper part of the transmission structure is fixedly connected to the shift shaft. The lower part of the transmission structure protrudes from the main support plate and is embedded in the drive groove of the shift block. The micrometer mounting base is fixedly mounted on the upper surface of the main support plate, and the micrometer is fixedly mounted on the micrometer mounting base. The caliper is connected to the side protrusion of the caliper block. The vertical part of the caliper block is located in the mounting base, and the bottom of the vertical part of the caliper block is embedded in the drive groove of the shift block to be tested. The shifting force application component is fixedly sleeved on the outer protrusion of the shift shaft.
2. The gearbox shifting test mechanism according to claim 1, characterized in that: When only shift formation detection is performed, the shift force application component is a shift shaft, and the bottom of the shift shaft is fixed to the outer convex end of the shift rotating shaft.
3. The gearbox shifting test mechanism according to claim 2, characterized in that: When the caliper is initially at the 0 mark, the shifting force component drives the shifting shaft to rotate. The transmission structure fixed to the shifting shaft drives the shifting block to move the shift fork assembly to switch gears. The shifting block simultaneously drives the caliper shifting block to move, thereby driving the caliper to move on the micrometer. The reading is then taken through the reading mechanism.
4. The gearbox shifting test mechanism according to claim 1, characterized in that: When the shifting force application component is a digital torque wrench or a torque measuring instrument, the outer convex end of the shifting shaft is fixed to the digital torque wrench or torque measuring instrument through a hexagonal connector. Moving the digital torque wrench or torque measuring instrument causes the shifting block to drive the shift fork assembly to switch gears, thereby quickly obtaining the shifting torque of the corresponding shifting mechanism.
5. The gearbox shifting test mechanism according to claim 1, characterized in that: The upper surface of the main support plate is provided with notches and grooves corresponding to the positions of the gear shift mechanism of the gearbox. It is also equipped with several mechanism cover plates. When the corresponding gear shift mechanism is not tested, the mechanism cover plate is installed on the upper surface of the main support plate corresponding to the gear shift mechanism.
6. The gearbox shifting test mechanism according to claim 1, characterized in that: The bottom of the mounting base has a hollow structure.
7. The gearbox shifting test mechanism according to claim 1, characterized in that: The drive groove of the shift lever is a flat keyway. The width of the drive groove of the shift lever covers the transmission structure and the bottom structure of the caliper lever. When the drive operation is performed, there is a gap between the bottom of the transmission structure and the bottom of the caliper lever.
8. The gearbox shifting test mechanism according to claim 1, characterized in that: It also includes a self-locking mechanism, which is pressed into the shift fork shaft of the corresponding shifting mechanism after passing through the positioning hole of the main support plate. The self-locking mechanism is a self-locking spring, a self-locking steel ball, or a self-locking pin.