Clutch output torque measuring device
By designing the support shaft, bearing housing, and coupling, and combining them with a hydraulic brake, the problem of insufficient coaxiality in existing devices was solved, and high-precision clutch torque measurement was achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI KAIXU TRANSMISSION TECH CO LTD
- Filing Date
- 2025-08-27
- Publication Date
- 2026-07-14
AI Technical Summary
Existing clutch torque measuring devices suffer from inaccurate measurement data and even damage to the torque sensor due to bracket machining errors and the weight of the drive shaft causing coaxiality to exceed requirements.
The stability of torque transmission is improved by using a support shaft and bearing housing, the misalignment of the clutch is compensated by a coupling, and the output shaft of the torque sensor is directly connected to the disc hydraulic brake, reducing the number of transition plates and improving coaxiality and measurement accuracy.
It improves the accuracy and stability of clutch torque measurement, reduces vibration, simplifies the structure, facilitates adjustment, is easy to operate, and has high measurement accuracy.
Smart Images
Figure CN224499738U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of clutch technology, specifically, it relates to a clutch output torque measuring device. Background Technology
[0002] During vehicle operation, the clutch controls the temporary separation and gradual engagement of the engine and transmission to cut off or transmit power from the engine to the transmission. The effectiveness and responsiveness requirements for this process become increasingly stringent. The maximum torque that can be transmitted varies depending on the degree of clutch engagement.
[0003] To test clutch performance, it is necessary to test the clutch's engagement, disengagement, and output torque. Measuring output torque requires a torque sensor. As a precision measuring instrument, the torque sensor has very high requirements for coaxiality and must be securely fastened without any looseness. Currently, most measuring devices are not only bulky but also use rigid connections, directly connecting to the clutch drive shaft and resistance equipment, or using a series of transition plates and supports. Due to machining errors in the supports and the weight of the drive shaft, the coaxiality of the torque sensor on both sides can exceed the required range, resulting in inaccurate measurement data or even damage to the torque sensor. Therefore, improvements are necessary. Utility Model Content
[0004] To address the aforementioned problems in the prior art, this utility model provides a clutch output torque measuring device.
[0005] To achieve the above objectives, the present invention adopts the following technical solution:
[0006] As one aspect of this utility model, a clutch output torque measuring device is provided, comprising:
[0007] Base;
[0008] The support shaft is rotatably connected to the base;
[0009] A rotating unit is detachably connected to the base, and the support shaft is rotatably connected to the base through the rotating unit;
[0010] A torque sensor is detachably connected to the base; the input shaft of the torque sensor is connected to the output end of the support shaft.
[0011] The braking unit is detachably connected to the base; the braking unit is coupled with the output shaft of the torque sensor.
[0012] Optionally, the rotating unit includes a bearing housing detachably connected to the base, on which one or more bearings are mounted; when there are two or more bearings, a spacer is provided between the two bearings; the outer ring of the bearing mates with the bearing hole of the bearing housing, the support shaft is mounted on the inner ring of the bearing, and the two ends of the support shaft are located on the two sides of the bearing housing; the spacer passes through the support shaft.
[0013] Optionally, retaining rings are provided on both sides of the support shaft, and the retaining rings confine the bearing within the bearing housing.
[0014] Optionally, a first flange is installed at the output end of the support shaft.
[0015] Optionally, a first keyway is formed at a preset position of the first flange and a preset position of the support shaft, a first key block is provided between the two first keyways, a first threaded hole is provided on the side of the first flange, a first fastening bolt is threaded onto the first threaded hole, and the first fastening bolt fastens the first key block.
[0016] Optionally, a coupling is also included, wherein the output end of the support shaft is connected to the input shaft of the torque sensor via the coupling.
[0017] Optionally, the braking unit includes a brake bracket detachably connected to a base; a hydraulic brake is mounted on the brake bracket, and the hydraulic brake is clamped or separated from the output shaft of the torque sensor.
[0018] Optionally, the output shaft of the torque sensor is mounted with a brake disc, which is located within the braking zone of the hydraulic brake.
[0019] Optionally, a brake disc mounting bracket is also included, the brake disc being connected to the brake disc mounting bracket, and the brake disc mounting bracket being mounted on the output shaft of the torque sensor.
[0020] Optionally, a second keyway is formed at the preset position of the brake disc mounting base and the preset position of the output shaft of the torque sensor, respectively; a second key block is provided between the two second keyways, and a second threaded hole is provided on the side of the brake disc mounting base, and a second fastening bolt is threaded onto the second threaded hole, and the second fastening bolt fastens the second key block.
[0021] The beneficial effects of this clutch output torque measuring device are specifically reflected in the following aspects: The use of a support shaft and bearing housing improves the stability of clutch torque transmission and reduces vibration; the internal bearing also provides support and can withstand greater weight. A coupling connects the two shafts, and through the clutch's misalignment compensation characteristics, the coaxiality of the input and the accuracy of the measurement are significantly improved. Furthermore, the coupling has a vibration-absorbing effect, reducing vibration during torque transmission. A disc hydraulic brake is used on the resistance side of the torque sensor, directly connecting the brake disc to the output shaft of the torque sensor, reducing a series of intermediate transition plates in other resistance devices, significantly improving alignment and measurement accuracy. The overall structure of the measuring device is simple, easily adjustable according to the clutch torque measurement magnitude and installation dimensions, simple to operate, and offers high measurement accuracy. Attached Figure Description
[0022] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention.
[0023] Figure 1 This is a three-dimensional structural view of the clutch output torque measuring device of this utility model;
[0024] Figure 2 This is a cross-sectional view of the clutch output torque measuring device of this utility model.
[0025] Figure 3 for Figure 2 Sectional view at point AA. Detailed Implementation
[0026] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0027] One embodiment of this application provides a clutch output torque measuring device, such as... Figures 1-3 As shown, it includes: a base 1, which serves as a support;
[0028] Support shaft 2 is rotatably connected to base 1;
[0029] The rotating unit 3 is detachably connected to the base 1 by fasteners, and the support shaft 2 is rotatably connected to the base 1 through the rotating unit 3;
[0030] The torque sensor 4 is detachably connected to the base 1 by fasteners. Its structure and working principle are existing known technologies and will not be described in detail here. The input shaft of the torque sensor 4 is connected to the output end of the support shaft 2.
[0031] The braking unit 5 is detachably connected to the base 1 by fasteners; the braking unit 5 cooperates with the output shaft of the torque sensor 4; the braking unit 5 is a hydraulic brake, which is a known technology and will not be described in detail here.
[0032] In use, the input end of the support shaft 2 is connected to the output end of the clutch, and the output torque of the clutch is transmitted to the torque sensor 4 through the support shaft 2.
[0033] In one embodiment, such as Figures 1-2 As shown, the rotating unit 3 includes a bearing housing 31 detachably connected to the base 1 via fasteners. One or more bearings 32 are mounted on the bearing housing 31. When there are two or more bearings 32, a spacer 33 is provided between the two bearings 32. The spacer 33 adjusts the clearance and preload of the bearings 32 to prevent wear and protect the bearings 32. The outer ring of the bearing 32 mates with the bearing hole of the bearing housing 31. The support shaft 2 is mounted on the inner ring of the bearing 32, with both ends of the support shaft 2 located on the outer sides of the bearing housing 31. The spacer 33 passes through the support shaft 2. Retaining rings 34 are provided on both sides of the support shaft 2, confining the bearing 32 within the bearing housing 31. The support shaft 2 can rotate relative to the base 1 via the bearings 32. The bearings 32 provide support and load-bearing capacity, making the input more stable and preventing damage to the torque sensor from the weight and vibration of the support shaft.
[0034] In one embodiment, such as Figures 1-2 As shown, a first flange 6 is installed at the output end of the support shaft 2. The first flange 6 is used to connect to the output end of the clutch. A first keyway is formed on the preset position of the first flange 6 and the preset position of the support shaft 2 respectively. A first key block 7 is provided between the two first keyways. A first threaded hole 61 is opened on the side of the first flange 6. A first fastening bolt is threaded onto the first threaded hole 61. The first fastening bolt fastens the first key block 7 to prevent the first key block 7 from loosening and causing vibration.
[0035] In one embodiment, such as Figures 1-2 As shown, it also includes a coupling 8, through which the output end of the support shaft 2 is connected to the input shaft of the torque sensor 4; it should be noted that the structure and installation of the coupling 8 are existing known technologies, and will not be described in detail here.
[0036] In one embodiment, such as Figures 1-2As shown, the braking unit 5 includes a brake bracket 51, which is detachably connected to the base 1 by fasteners; a hydraulic brake 52 is mounted on the brake bracket 51 by bolts, and the hydraulic brake 52 is clamped or separated from the output shaft of the torque sensor 4.
[0037] In one embodiment, such as Figures 1-2 As shown, the output shaft of the torque sensor 4 is mounted with a brake disc 9 via fasteners. The brake disc 9 is located within the braking zone of the hydraulic brake 52. Resistance is applied by the clamping force of the hydraulic brake 52 on the brake disc 9. The brake disc 9 is connected to the brake disc mounting base 11 via fasteners. The brake disc mounting base 11 is mounted on the output shaft of the torque sensor 4. Second keyways are formed at preset positions on the brake disc mounting base 11 and the output shaft of the torque sensor 4, respectively. A second key block 10 is provided between the two second keyways. A second threaded hole 111 is provided on the side of the brake disc mounting base 11. A second fastening bolt is threaded onto the second threaded hole 111. The second fastening bolt secures the second key block 10 to prevent the second key block 10 from loosening and causing vibration.
[0038] In this embodiment, the clamping force on the brake disc 9 is adjusted by the pressure of the hydraulic brake 52 to provide reverse resistance, and the torque magnitude is displayed by the output signal of the torque sensor 4, thereby determining the output torque of the clutch. It should be noted that the signal processing and display of the torque sensor 4 are existing known technologies and will not be described in detail here. The focus of this application is: how to assemble the torque sensor 4 to facilitate the measurement of the clutch output torque.
[0039] In this embodiment, the components are fixed together using key blocks, with threaded holes on one side for tightening, improving both tightness and safety. Because the torque sensor requires high coaxiality and cannot withstand heavy weight, direct connection to the support shaft or clutch output end could cause vibration and inaccurate test data; heavy loads could even damage the torque sensor. Using a support shaft and bearing housing at the input end improves the stability of clutch torque transmission, reduces vibration, and the internal bearings provide support, allowing it to withstand greater weight. A coupling connects the two shafts, and the clutch's misalignment compensation significantly improves input coaxiality and measurement accuracy. The coupling also absorbs vibration, reducing vibration during torque transmission. A disc hydraulic brake is used on the resistance side of the torque sensor, directly connecting the brake disc to the output shaft, reducing the need for intermediate transition plates in other resistance devices, significantly improving alignment and measurement accuracy. The overall structure of the measuring device is simple, easily adjustable according to the clutch torque measurement and installation dimensions, and offers simple operation and high measurement accuracy.
[0040] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.
[0041] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values of the components and steps described in these embodiments do not limit the scope of this application. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.
[0042] In the description of this application, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this application; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.
[0043] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.
[0044] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this application.
[0045] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0046] The above description is only a preferred embodiment of the present utility model. All equivalent changes and modifications made within the scope of the patent application of the present utility model shall be covered by the present utility model.
Claims
1. A clutch output torque measuring device, characterized in that, It includes: Base; The support shaft is rotatably connected to the base. A rotating unit is detachably connected to the base, and the support shaft is rotatably connected to the base through the rotating unit; A torque sensor is detachably connected to the base; the input shaft of the torque sensor is connected to the output end of the support shaft. The braking unit is detachably connected to the base; The braking unit is coupled with the output shaft of the torque sensor.
2. The clutch output torque measuring device as described in claim 1, characterized in that, The rotating unit includes a bearing housing detachably connected to the base, on which one or more bearings are mounted; when there are two or more bearings, a spacer is provided between the two bearings; the outer ring of the bearing mates with the bearing hole of the bearing housing, and the support shaft is mounted on the inner ring of the bearing, with both ends of the support shaft located on the outer sides of the bearing housing; the spacer passes through the support shaft.
3. The clutch output torque measuring device as described in claim 2, characterized in that, The support shaft is provided with retaining rings on both sides, which confine the bearing within the bearing housing.
4. The clutch output torque measuring device as described in claim 1, characterized in that, The output end of the support shaft is equipped with a first flange.
5. The clutch output torque measuring device as described in claim 4, characterized in that, A first keyway is formed at the preset position of the first flange and the preset position of the support shaft, and a first key block is provided between the two first keyways. A first threaded hole is opened on the side of the first flange, and a first fastening bolt is threaded onto the first threaded hole. The first fastening bolt fastens the first key block.
6. The clutch output torque measuring device as described in claim 1, characterized in that, It also includes a coupling, through which the output end of the support shaft is connected to the input shaft of the torque sensor.
7. The clutch output torque measuring device as described in claim 1, characterized in that, The braking unit includes a brake bracket, which is detachably connected to the base; a hydraulic brake is mounted on the brake bracket, and the hydraulic brake is clamped or separated from the output shaft of the torque sensor.
8. The clutch output torque measuring device as described in claim 7, characterized in that, The output shaft of the torque sensor is equipped with a brake disc, which is located within the braking zone of the hydraulic brake.
9. The clutch output torque measuring device as described in claim 8, characterized in that, It also includes a brake disc mounting bracket, the brake disc being connected to the brake disc mounting bracket, and the brake disc mounting bracket being mounted on the output shaft of the torque sensor.
10. The clutch output torque measuring device as described in claim 9, characterized in that, A second keyway is formed at the preset position of the brake disc mounting base and the preset position of the output shaft of the torque sensor, respectively; a second key block is provided between the two second keyways; a second threaded hole is provided on the side of the brake disc mounting base; a second fastening bolt is threaded onto the second threaded hole; and the second fastening bolt fastens the second key block.