A test bench equipment shafting butt joint device

Abstract

The utility model discloses a test board equipment axle system butt joint device, include: sleeve, pivot module and response module, and the one end of sleeve is connected with gearbox, and the first end of pivot module is connected with test board equipment, and the second end of pivot module is equipped with the butt joint of length and internal diameter of sleeve adaptation, and the butt joint is used for in the inside of sleeve and is inserted or is projected, and response module sets up in the end of butt joint away from sleeve, is used for when sleeve reaches the end of butt joint away from sleeve and shows butt joint complete signal, the utility model discloses a sleeve and gearbox connection, pivot module has butt joint and response module automatic detection butt joint state's technical means, has realized gearbox and test board equipment axle system's automatic alignment and butt joint, has replaced manual adjustment to solved the technical problem that butt joint precision is difficult to guarantee, has improved butt joint's accuracy and efficiency.

Description

Technical Field

[0001] This utility model relates to the field of transmission testing technology, and in particular to a shaft docking device for a test bench. Background Technology

[0002] The off-line testing of gearboxes is the final critical quality inspection process before products leave the factory. It directly affects not only the reliability of product quality but also the overall efficiency of the production line. To balance the dual requirements of quality control and production cycle time, manufacturers need to minimize the installation time of products on the test bench while ensuring testing accuracy. Therefore, achieving rapid, accurate, and automated installation of gearboxes on testing equipment has become a crucial technical aspect for improving the automation level and operational efficiency of the production line.

[0003] In existing technical solutions, the shaft connection between the gearbox and the testing equipment generally adopts a universal coupling structure. This solution typically includes the following hardware configuration and operation procedure: the testing equipment end is usually equipped with a drive motor and torque sensor, and its output shaft is connected to one end of the universal coupling via a mounting flange; the input or output shaft of the gearbox under test is also equipped with a corresponding mounting flange. Due to the wide variety of gearbox models, significant differences in external structure, and the lack of a unified and precise positioning benchmark for most, during alignment, the operator must manually adjust the position of the gearbox on the test bench to initially align the holes between the gearbox flange and the coupling flange before inserting bolts or pins for fixation. Universal couplings, due to their angular and axial compensation capabilities within a certain range, can alleviate the difficulty of direct alignment and are widely used to compensate for misalignment during installation.

[0004] However, the installation quality under manual adjustment is significantly affected by the operator's experience, and the consistency of the connection and the positional accuracy are difficult to guarantee, which can easily lead to residual deviations in alignment and affect the accuracy and reliability of the test data. Utility Model Content

[0005] The purpose of this utility model is to provide a shaft system docking device for test bench equipment, so as to overcome the problem that the existing technology requires manual adjustment of the position of the gearbox on the test bench to dock the gearbox with the coupling, which makes it difficult to guarantee the docking accuracy.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: This utility model discloses a shaft system docking device for a test bench, comprising: a sleeve, a rotating shaft module, and a sensing module. One end of the sleeve is connected to the gearbox, and the axis of the sleeve coincides with the axis of the output shaft of the gearbox; The first end of the rotating shaft module is connected to the test bench equipment, and the axis of the rotating shaft module coincides with the drive shaft axis of the test bench equipment. The second end of the rotating shaft module is provided with a connector that matches the length and inner diameter of the sleeve. The connector is used to extend into or out of the sleeve. The sensing module is located at the end of the connector away from the sleeve, and is used to display a docking completion signal when the sleeve reaches the end of the connector away from the sleeve.

[0007] Preferably, the inner wall of the sleeve is provided with an internal spline; The outer wall of the connector is provided with an external spline that matches the internal spline.

[0008] Preferably, the rotating shaft module includes: a first connecting rod and an elastic element; The first connecting rod is disposed between the test bench equipment and the connector; The elastic element is disposed between the test bench equipment and the first connecting rod, and is used to compress and deform when the internal spline and the external spline are mismatched, so as to provide retraction space for the first connecting rod and the connector.

[0009] Preferably, the sensing module includes a ring unit, a first sensor, and an extension plate with grooves on its surface; The collar unit is arranged around the outer surface of the first connecting rod; One end of the extension plate is fixed to the collar unit, the extension plate is parallel to the axis of the connector, and the other end of the extension plate extends toward the sleeve. The first sensor is fixed in the groove of the extension plate and corresponds to the end of the connector away from the sleeve, and is used to display a docking completion signal when the sleeve reaches the end of the connector away from the sleeve.

[0010] Preferably, the shaft docking device of the test bench equipment further includes a second sensor and a third sensor; The second sensor is fixed in the groove of the extension plate and at a preset distance from the end of the connector away from the sleeve. It is used to display a docking failure signal when the end of the connector near the sleeve retracts beyond the detection distance of the second sensor. The preset distance is less than or equal to the detection distance. The third sensor is located at the end of the connector near the sleeve, and is used to display a docking start signal when the sleeve reaches the end of the connector near the sleeve.

[0011] Preferably, in the shaft docking device of the test bench equipment, the rotating shaft module further includes: a universal joint and a second connecting rod arranged sequentially along the direction away from the sleeve. The end of the second connecting rod furthest from the sleeve is connected to the test bench equipment; The universal joint is disposed between the other end of the second connecting rod and the elastic element.

[0012] The aforementioned test bench equipment shaft system docking device further includes multiple support modules arranged circumferentially along the outer surface of the collar unit. The support module is used to provide support for the rotating shaft module.

[0013] Preferably, the shaft docking device of the test bench equipment includes, in each support module: a first pressure plate, a second pressure plate, and a spring; The first pressure plate is fixed on the collar unit; One end of the spring is fixedly connected to the first pressure plate; The second pressure plate is disposed opposite to the first pressure plate, and the second pressure plate is fixedly connected to the other end of the spring.

[0014] Preferably, in the shaft docking device of the test bench equipment, each support module further includes a connecting shaft; The connecting shaft passes through the inside of the spring along the extension and retraction direction of the spring, and passes through the first pressure plate and the second pressure plate in sequence, and is fixedly connected to the collar unit.

[0015] Preferably, the sleeve is further provided with a lifting hole at a preset position to assist the moving tool in placing the sleeve.

[0016] Compared with the prior art, the present invention has the following beneficial technical effects: (1) This utility model achieves automatic alignment and docking of the gearbox and the test bench equipment shaft system by using a sleeve to connect the gearbox, a rotating shaft module with a coupling joint, and a sensing module to automatically detect the docking status. This replaces manual adjustment, thereby solving the technical problem of difficulty in ensuring docking accuracy and improving the accuracy and efficiency of docking. (2) Furthermore, by setting up matching inner and outer spline structures, this utility model enables the sleeve and the connector to mesh precisely when docking, solving the slippage problem that may occur when relying solely on frictional transmission, and further improving the reliability of transmission and the accuracy of docking. (3) Furthermore, by setting a first connecting rod and an elastic element, this utility model provides buffer and retraction space for the joint when the spline is misaligned, avoiding equipment damage caused by forced docking, solving the impact problem caused by position deviation during docking, and improving the service life and safety of the device. (4) Furthermore, this utility model sets a second sensor to monitor the retraction status of the docking joint in real time. When the retraction exceeds the preset distance, a docking failure signal is issued, which solves the problem that the operator cannot perceive the docking abnormality in time, facilitates quick adjustment and retry, and improves the controllability of the docking process. (5) Furthermore, by setting a third sensor to display a docking start signal when the sleeve approaches the docking joint, this utility model solves the problem of unclear docking start point, provides accurate timing control for the subsequent docking process, and enhances the standardization of operation; (6) Furthermore, by setting a universal joint and a second connecting rod at the first end of the rotating shaft module, the rotating shaft module can adapt to a certain angular deviation, which solves the problem of docking difficulties caused by the incomplete coaxiality of the test bench and the gearbox installation position, and improves the adaptability and fault tolerance of the device. (7) Furthermore, by setting a support module, this utility model provides a stable support force for the rotating shaft module during axial movement, which solves the problem of shaking caused by the weight or movement of the rotating shaft module, and ensures the stability and accuracy of the docking process; (8) Furthermore, by adopting a support module composed of double pressure plates and springs, this utility model achieves elastic support for the rotating shaft module, solves the stress concentration problem that may be caused by rigid support, absorbs minor vibrations during docking, and improves the stability of the device. (9) Furthermore, by setting a connecting shaft in each support module, the present invention makes the support force adjustable and evenly distributed, thus solving the problems of reliability and durability of the support module; (10) Furthermore, by providing lifting holes on the sleeve, this utility model facilitates placement and adjustment using moving tools, solving the problem of the sleeve being difficult to position accurately due to its weight or volume, and improving installation efficiency and convenience. Attached Figure Description

[0017] Figure 1 This is a front view of the rotating shaft module in this utility model; Figure 2 This is a side view of the rotating shaft module in this utility model; Figure 3 This is a cross-sectional view of the rotating shaft module in this utility model; Figure 4 This is a cross-sectional view of the sleeve in this utility model; Figure 5 This is a front view of the end of the sleeve that connects to the gearbox in this utility model; In the diagram, 1-second spring; 2-connecting shaft; 3-second pressure plate; 4-first pressure plate; 5-extension plate; 6-ring bracket; 7-button joint; 8-sliding bearing sleeve; 9-spherical bearing; 10-bearing seat; 11-floating docking seat bracket; 12-universal joint; 13-first sliding spline sleeve; 14-ring unit; 15-third sensor; 16-second sensor; 17-first sensor; 18-spring pressure plate; 19-first spring; 20-sliding baffle; 21-bearing; 22-groove; 23-second sliding spline sleeve; 24-first connecting rod; 25-second connecting rod; 26-end face of the sleeve connected to the gearbox; 27-lifting hole; 28-cylinder opening; 29-inner spline; 30-outer metal diaphragm; 31-inner metal diaphragm; 32-end of the button joint away from the sleeve; 33-end of the button joint near the sleeve; 34-outer spline. Detailed Implementation

[0018] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0019] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the utility model described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0020] like Figure 1 As shown, this utility model discloses a shaft docking device for a test bench, comprising: a sleeve, a rotating shaft module, and a sensing module. When using this utility model, the gearbox and the sleeve must first be connected so that the axis of the sleeve coincides with the output shaft axis of the gearbox; then the rotating shaft module is aligned and connected with the test bench equipment, and the axis of the rotating shaft module coincides with the drive shaft axis of the test bench equipment; finally, the axis of the sleeve and the axis of the rotating shaft module are connected to complete the shaft system connection of the test bench equipment.

[0021] One end of the sleeve is connected to the gearbox; such as Figure 5 The image shown is a front view of the end face 26 at the end where the sleeve connects to the gearbox; Figure 4 The image shows a side sectional view of the sleeve. Preferably, the inner wall of the sleeve is provided with an internal spline 29; and the inner diameter is not uniform, with the inner diameter being smaller in the section near the gearbox and larger in the section away from the gearbox and also provided with an internal spline 29.

[0022] Preferably, a lifting hole 27 is provided at the preset position of the sleeve to assist the moving tool in placing the sleeve.

[0023] like Figures 1-3 As shown, this is the rotating shaft module of this utility model.

[0024] Specifically, such as Figure 1 , Figure 2 As shown, the first end of the rotating shaft module is connected to the test bench equipment, and the second end of the rotating shaft module is provided with a connector 7 that is adapted to the length and inner diameter of the sleeve. The connector 7 is used to extend or retract into the inside of the sleeve; See Figure 2 Joint 7 refers to the section labeled 32 to 33 in the diagram, which is composed of... Figure 2 It can be seen that the changes in the length and inner diameter of connector 7 are both related to Figure 4 The sleeves are consistent.

[0025] Furthermore, by Figure 2 It can be seen that the outer wall of the connector 7 is also provided with an external spline 34 that matches the size and position of the internal spline 29.

[0026] Preferred, such as Figure 3 As shown, the rotating shaft module includes: a first connecting rod 24 and an elastic element; The first connecting rod 24 is disposed between the test bench equipment and the connector 7; The elastic element is disposed between the test bench equipment and the first connecting rod 24, and is used to compress and deform when the inner spline 29 and the outer spline 34 are mismatched, so as to provide a retraction space for the first connecting rod 24 and the coupling 7.

[0027] Preferred, such as Figure 2 , Figure 3 As shown, the rotating shaft module also includes: a universal joint 12 and a second connecting rod 25 arranged sequentially along the direction away from the sleeve. The end of the second connecting rod 25 furthest from the sleeve is connected to the test bench equipment; The universal joint 12 is located between the other end of the second connecting rod 25 and the elastic element.

[0028] Specifically, such as Figure 3 As shown, the elastic element includes a first sliding spline sleeve 13, a second sliding spline sleeve 23, a sliding baffle 20, a spring pressure plate 18, and a first spring 19; The first sliding spline sleeve 13 is slidably connected to the outer surface of the first connecting rod 24; The sliding baffle 20 abuts against the end of the first connecting rod 24 away from the connector 7, and the two sides of the sliding baffle 20 are slidably connected to the inner wall of the first sliding spline sleeve 13. One end of the first spring 19 is connected to the sliding baffle 20, and the extension and retraction direction of the first spring 19 is parallel to the axis of the connector 7. The other end of the first spring 19 is connected to the spring pressure plate 18, which provides support for the compression of the first spring 19. The second sliding spline sleeve 23 is fitted onto the outer surface of the first spring 19 to fix the first spring 19.

[0029] When the connector 7 is not accurately centered inside the sleeve and is resisted by the inner wall of the sleeve, the connector 7 and the first connecting rod 24 move along the compression direction of the first spring 19.

[0030] like Figure 2 As shown, the sensing module is located at the end 32 of the connector 7 away from the sleeve, and is used to display a docking completion signal when the sleeve reaches the end 32 of the connector 7 away from the sleeve.

[0031] The end 32 of the connector 7 furthest from the sleeve is considered the end point of the docking. Therefore, when the sleeve reaches this point, the sensing module will detect the presence of the sleeve and trigger the sensing light or other sensing signals of the sensing module to indicate that the docking is complete.

[0032] The first connecting rod 24 can rotate around the joint portion of the universal joint 12, thereby enabling the rotating shaft module to float.

[0033] In one embodiment, such as Figure 2 As shown, the sensing module includes a collar unit 14, a first sensor 17, and an extension plate 5 with a groove 22 on its surface; The collar unit 14 is fixed around the outer surface of the first connecting rod 24; Preferred, such as Figure 1 As shown, the collar unit 14 is composed of multiple concentric cylindrical parts. Specifically, the collar unit 14 includes, from the outside to the inside, an annular support 6, a sliding bearing sleeve 8, and an annular double-layer metal diaphragm. The annular bracket 6, the sliding bearing sleeve 8, and the double-layer metal diaphragm are arranged in concentric circles from the outside to the inside on the first connecting rod 24; Combination Figure 1As can be seen, in this utility model, the overall shape of the ring unit 14 is a multi-layered concentric circle, which includes, from the outside to the inside, a ring-shaped support 6, a sliding bearing 21 set 8, and a double-layered metal diaphragm arranged in a concentric circle; the rotating shaft module is located in the inner layer of the metal diaphragm, and together with the components of the ring-shaped support 6, it forms a multi-layered concentric circle.

[0034] Depend on Figure 2 It is known that one end of the extension plate 5 is fixed on the collar unit 14, the extension plate 5 is parallel to the axis of the coupling 7 and the other end of the extension plate 5 extends towards the sleeve. The first sensor 17 is fixed in the groove 22 of the extension plate 5 and corresponds to the end 32 of the coupling 7 away from the sleeve. It is used to display the docking completion signal when the sleeve reaches the end 32 of the coupling 7 away from the sleeve.

[0035] Combination Figure 1 , Figure 2 It is known that the collar unit 14 is sleeved on the first connecting rod 24, and the inner metal diaphragm 31 of the collar unit 14 is provided with an extension plate 5. The extension plate 5 is arranged parallel to the axial direction of the coupling 7 and extends along the direction of the sleeve. The first sensor 17 is arranged in the groove 22 of the extension plate 5 and is aligned with the end of the external spline 34 near the first connecting rod 24. The end of the external spline 34 is regarded as the end point of the coupling 7. When the sleeve and the coupling 7 are successfully docked, the sleeve will reach the end point. At this time, it is considered that the docking is completed. The first sensor 17 detects the sleeve and the sensor light is lit.

[0036] Depend on Figure 3 It can be seen that a sliding bearing is installed inside the sliding bearing sleeve 8.

[0037] Preferably, the second sensor 16 and the third sensor 15; The second sensor 16 is fixed in the groove 22 of the extension plate 5 and is at a preset distance from the end 32 of the connector 7 away from the sleeve. It is used to display a docking failure signal when the end 33 of the connector 7 near the sleeve retracts beyond the detection distance of the second sensor 16. The preset distance is less than or equal to the detection distance. The third sensor 15 is located at the end 33 of the connector 7 near the sleeve, and is used to display a docking start signal when the sleeve reaches the end of the connector 7 near the sleeve.

[0038] In this invention, the first, second and third sensors 15 are all proximity switches.

[0039] In other embodiments, such as Figure 1 As shown, the shaft system docking device of the test bench equipment also includes multiple support modules arranged circumferentially along the outer surface of the collar unit 14. The support module is used to provide support for the shaft module and prevent the shaft module from sagging when it is not connected to the sleeve.

[0040] Specifically, each support module includes: a first pressure plate 4, a second pressure plate 3, and a second spring 1; The first pressure plate 4 is fixed to the outer surface of the collar unit 14. Specifically, the first pressure plate is fixed to the outer surface of the annular bracket. One end of the second spring 1 is fixedly connected to the first pressure plate 4; The second pressure plate 3 is positioned opposite to the first pressure plate 4, and the second pressure plate 3 is fixedly connected to the other end of the second spring 1.

[0041] Preferably, each support module also includes a connecting shaft 2; The connecting shaft 2 passes through the interior of the second spring 1 along the extension and retraction direction of the second spring 1, and passes through the first pressure plate 4 and the second pressure plate 3 in sequence, and is fixedly connected to the collar unit 14.

[0042] Depend on Figure 1 As can be seen, in one embodiment, the connecting shaft 2 is fixedly connected to the inner metal diaphragm 31 in the double-layer metal diaphragm. In this embodiment, each support module also includes a joint bearing 9, which is sleeved on the connecting shaft 2 and located inside the annular bracket.

[0043] The extension plate 5 is fixed on the outer surface of the inner metal diaphragm 31 in the double-layer metal diaphragm.

[0044] like Figure 2 As shown, preferably, the present invention also includes a floating docking seat bracket 11 and a bearing seat 10. The floating docking seat bracket 11 is cylindrical and is sleeved on the outer periphery of the first connecting rod 24 and the universal joint 12. One end of the floating docking seat bracket 11 is connected to the collar unit 14. The bearing housing 10 is fitted onto the outer periphery of the second connecting rod 25.

[0045] The usage process of this utility model device is as follows: (1) Mechanism installation: Using screws, install... Figure 2 The bearing housing 10 is installed on the slide bracket of the test bench equipment. Then, the rotating shaft module is fixed to the shaft system of the test bench equipment with screws, so that the rotating shaft module can be fixed and the connector 7 can be rotated under the drive of the shaft system of the test bench equipment. (2) Tooling installation: Before testing the gearbox, install the gearbox at the corresponding sleeve mounting position; (3) Shaft assembly: at the gearbox and Figure 1 After the rotating shaft module is installed on the test bench, the shaft system of the drive mechanism on the equipment starts to rotate at a speed of 5 rpm, controlled by the slide table connected to the test bench. Figure 1 The rotating shaft module shown is either close to or far from the gearbox; when close, Figure 1The coupling 7 in the rotating shaft module passes through the sleeve opening 28 and is guided by the sleeve opening 28 to ensure that the involute external spline 34 of the coupling 7 can smoothly enter. Figure 4 The internal spline 29 of the sleeve is used to detect whether the shaft is properly connected via a proximity switch mounted on the extension plate 5. There are three sensors on the detection bracket. When the third sensor 15 detects the sleeve, it indicates that shaft connection is about to begin; when the first sensor 17 detects the sleeve, it indicates that the connection is complete. If the external spline 34 on the shaft does not engage with the internal spline 29 on the tooling, the mating joint 7 will move away from the sleeve along its axial direction, compressing the first spring 19 and causing the second sensor 16 on the extension plate 5 to fail to detect the mating joint 7. In this situation, the sliding table on the test bench needs to be controlled. Figure 1 The rotating shaft module shown moves away from the sleeve, at which point the connector 7 resets under the action of the first spring 19. This step is repeated multiple times until the inner and outer splines 34 are fully matched, at which point the docking is complete, and all three sensors light up.

Claims

1. A shaft connection device for a test bench, characterized in that, include: Sleeve, shaft module, and sensing module, One end of the sleeve is connected to the gearbox, and the axis of the sleeve coincides with the axis of the output shaft of the gearbox; The first end of the rotating shaft module is connected to the test bench equipment, and the axis of the rotating shaft module coincides with the drive shaft axis of the test bench equipment. The second end of the rotating shaft module is provided with a connector that matches the length and inner diameter of the sleeve. The connector is used to extend into or out of the sleeve. The sensing module is located at the end of the connector away from the sleeve, and is used to display a docking completion signal when the sleeve reaches the end of the connector away from the sleeve.

2. The shaft connection device for the test bench equipment according to claim 1, characterized in that, The inner wall of the sleeve is provided with an internal spline; The outer wall of the connector is provided with an external spline that matches the internal spline.

3. The shaft connection device for the test bench equipment according to claim 2, characterized in that, The rotating shaft module includes: a first connecting rod and an elastic element; The first connecting rod is disposed between the test bench equipment and the connector; The elastic element is disposed between the test bench equipment and the first connecting rod, and is used to compress and deform when the internal spline and the external spline are mismatched, so as to provide retraction space for the first connecting rod and the connector.

4. The shaft connection device for the test bench equipment according to claim 3, characterized in that, The sensing module includes a ring unit, a first sensor, and an extension plate with grooves on its surface; The collar unit is arranged around the outer surface of the first connecting rod; One end of the extension plate is fixed to the collar unit, the extension plate is parallel to the axis of the connector, and the other end of the extension plate extends toward the sleeve. The first sensor is fixed in the groove of the extension plate and corresponds to the end of the connector away from the sleeve, and is used to display a docking completion signal when the sleeve reaches the end of the connector away from the sleeve.

5. The shaft connection device for the test bench equipment according to claim 4, characterized in that, It also includes a second sensor and a third sensor; The second sensor is fixed in the groove of the extension plate and at a preset distance from the end of the connector away from the sleeve. It is used to display a docking failure signal when the end of the connector near the sleeve retracts beyond the detection distance of the second sensor. The preset distance is less than or equal to the detection distance. The third sensor is located at the end of the connector near the sleeve, and is used to display a docking start signal when the sleeve reaches the end of the connector near the sleeve.

6. The shaft connection device for the test bench equipment according to claim 3, characterized in that, The rotating shaft module further includes: a universal joint and a second connecting rod arranged sequentially along the direction away from the sleeve. The end of the second connecting rod furthest from the sleeve is connected to the test bench equipment; The universal joint is disposed between the other end of the second connecting rod and the elastic element.

7. The shaft connection device for the test bench equipment according to claim 4, characterized in that, It also includes a plurality of support modules arranged circumferentially along the outer surface of the collar unit. The support module is used to provide support for the rotating shaft module.

8. The shaft connection device for the test bench equipment according to claim 7, characterized in that, Each support module includes: a first pressure plate, a second pressure plate, and a spring; The first pressure plate is fixed on the collar unit; One end of the spring is fixedly connected to the first pressure plate; The second pressure plate is disposed opposite to the first pressure plate, and the second pressure plate is fixedly connected to the other end of the spring.

9. The shaft connection device for the test bench equipment according to claim 8, characterized in that, Each support module also includes a connecting shaft; The connecting shaft passes through the inside of the spring along the extension and retraction direction of the spring, and passes through the first pressure plate and the second pressure plate in sequence, and is fixedly connected to the collar unit.

10. The shaft connection device for the test bench equipment according to claim 1, characterized in that, The sleeve is also provided with a lifting hole at a preset position to assist the moving tool in placing the sleeve.

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