Synchronizer balance spring detection device

Abstract

The present invention discloses a synchronizer balance spring detection device, which adopts a three-jaw chuck to fix the synchronizer, the lower end of the shift force sensor is connected to the shift fork of the synchronizer, and the upper end is connected to the moving guide block, and the displacement sensor measures the displacement of the moving guide block; the moving guide block is driven to move by rotating the linear guide rail, and then the shift fork of the synchronizer is driven to move, so that the sliding sleeve compresses the balance spring through the ejector pin, and the shift force sensor detects the force value of the balance spring in real time during the action of the balance spring, and the upper computer analyzes the displacement and the force value of the balance spring, so as to provide a theoretical basis for improving the synchronizer.

Description

Technical Field

[0001] The invention relates to the technical field of synchronizer detection, and in particular to a synchronizer balance spring detection device. Background Art

[0002] The synchronizer balance spring will generate different force values ​​during the synchronizer sleeve sliding process, and its force value directly affects the shifting feel of the synchronizer and whether the synchronizer drops out of gear. In the existing test method, the synchronizer assembly is installed on the synchronizer test bench for testing, but due to the influence of the friction resistance between the shift shaft and the upper cover, the friction resistance between the shift head and the guide block, and the friction resistance between the shift shaft and its housing, the force value generated by the synchronizer balance spring cannot be correctly read, which is not conducive to analyzing the shifting performance of the synchronizer and the cause of the synchronizer dropping out of gear.

[0003] At present, there is no synchronizer balance spring test device in China, and the foreign test device has a long procurement cycle and is expensive. Therefore, it is necessary to design a synchronizer balance spring detection device by ourselves. Summary of the invention

[0004] In view of the problems existing in the prior art, the present invention provides a synchronizer balance spring detection device, which can accurately measure the force value of the synchronizer balance spring and provide a theoretical basis for the improvement of the synchronizer.

[0005] The present invention is achieved through the following technical solutions:

[0006] A synchronizer balance spring detection device comprises a guide rail bracket, a three-jaw chuck, a displacement sensor, a shift force sensor and a host computer;

[0007] Among them, a linear guide is arranged on the top of the guide rail bracket, and a moving guide block is installed on the linear guide rail. The rotation of the linear guide rail can drive the moving guide block to move horizontally along the axial direction of the linear guide rail. The moving guide block is connected to the upper end of the shift force sensor, and the lower end of the shift force sensor is connected to the shift fork of the synchronizer. The synchronizer is fixed on the three-jaw chuck. The displacement sensor is arranged on the guide rail bracket for measuring the moving distance of the shift fork. The shift force sensor and the displacement sensor are respectively connected to the host computer.

[0008] Optionally, a fixing plate is provided on the top of the guide rail bracket, and support plates are provided at both ends of the bottom of the fixing plate respectively. The linear guide rail is horizontally arranged, and its two ends are rotatably connected to the two support plates respectively.

[0009] Optionally, the displacement sensor is mounted on a support plate and located below the linear guide rail.

[0010] Optionally, the linear guide is a turbine screw.

[0011] Optionally, the measurement accuracy of the displacement sensor is 1 / 1000, and the measurement accuracy of the shift force sensor is 1 / 1000.

[0012] Optionally, the shift force sensor and displacement sensor are respectively connected to a host computer via analog-to-digital conversion modules.

[0013] Optionally, connecting shafts are respectively provided at both ends of the shift force sensor, the connecting shaft at the upper end is fixedly connected to the movable guide block, and the connecting shaft at the lower end is connected to the fork shaft hole on the shift fork.

[0014] Optionally, the connecting shaft at the lower end is connected to the fork shaft hole through a horizontal bolt, and a gasket is provided between the end of the fork shaft hole and the nut.

[0015] Optionally, the three-jaw chuck is horizontally arranged on a three-jaw bracket, and the three-jaw chuck is used to clamp the supporting shaft of the synchronizer.

[0016] Optionally, a handle is provided at the end of the linear guide rail.

[0017] Compared with the prior art, the present invention has the following beneficial technical effects:

[0018] The synchronizer balance spring detection device uses a three-claw chuck to fix the synchronizer, the lower end of the shift force sensor is connected to the synchronizer's shift fork, and the upper end is connected to the moving guide block. The displacement sensor measures the displacement of the moving guide block; the moving guide block is driven to move by rotating the linear guide rail, and then the synchronizer's shift fork is driven to move, so that the sliding sleeve compresses the balance spring through the top pin, and the shift force sensor detects the force value of the balance spring in real time during the action process. The upper computer analyzes the displacement and the force value of the balance spring, providing a theoretical basis for improving the synchronizer. The synchronizer balance spring detection device has a simple structure and is easy to install and debug.

[0019] Furthermore, the linear guide rail adopts a worm screw, which makes the movement of the movable guide block more stable and can improve the measurement accuracy.

[0020] Furthermore, the use of high-precision displacement sensors and shift force sensors can improve the measurement accuracy of displacement and force values.

[0021] Furthermore, a gasket is arranged between the connecting shaft and the nut. Since there are many specifications of synchronizers, the connecting shaft can be fixedly connected to different synchronizers. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the structure of the detection device of the present invention;

[0023] Figure 2 for Figure 1 The enlarged view of point A in the middle;

[0024] Figure 3It is the control logic block diagram;

[0025] Figure 4 This is the force curve of the balance spring.

[0026] In the figure: 1. Linear guide; 2. Displacement sensor; 3. Shift force sensor; 5. Support shaft; 6. Shift fork; 7. Three-jaw chuck; 8. Sliding sleeve; 9. Ejector pin; 10. Balance spring. DETAILED DESCRIPTION

[0027] The present invention will be further described in detail below in conjunction with the accompanying drawings, which are intended to explain the present invention rather than to limit it.

[0028] like Figure 1 As shown, a synchronizer balance spring detection device includes a guide rail bracket, a three-claw bracket, a displacement sensor 2, a shift force sensor 3 and a host computer.

[0029] Among them, a linear guide assembly is arranged on the top of the guide rail bracket, and the linear guide assembly includes a horizontally arranged fixed plate, the fixed plate is connected to the top of the guide rail bracket, and vertical support plates are arranged at both ends of the bottom of the fixed plate. The linear guide 1 is arranged horizontally, and two support plates at both ends are rotatably connected. One end of the linear guide 1 passes through one of the support plates, and the end of the linear guide 1 extending out of the support plate is connected with a handle for driving the linear guide 1 to rotate; a moving guide block is installed on the linear guide 1, and the rotation of the linear guide 1 can make the moving guide block move along its axial direction, and the moving guide block is connected to the shift force sensor 3, and the displacement sensor 2 is arranged on another support plate for detecting the moving distance of the fork.

[0030] The upper and lower ends of the shift force sensor 3 are both provided with connecting shafts, the upper connecting shaft is connected to the moving guide block, and the lower connecting shaft is connected to the synchronizer. A bolt hole is provided on the connecting shaft at the lower end of the shift force sensor, and a bolt passes through the bolt hole and is connected to the fork shaft hole on the fork 6 of the synchronizer.

[0031] The linear guide 1 is a worm screw.

[0032] The connecting shaft at the lower end of the shift force sensor 3 is connected to the fork shaft hole on the fork 6 of the synchronizer through bolts and nuts. A gasket is arranged on the bolt, and the gasket contacts the top of the fork shaft hole. The nut is pressed onto the gasket, and the diameter of the gasket is larger than the diameter of the fork shaft hole. By setting the gasket, the nut can be connected to different synchronizers.

[0033] A three-jaw chuck 7 is horizontally fixed on the three-jaw bracket, and the three-jaw chuck 7 tightens the support shaft 5 of the synchronizer to achieve the fixation of the synchronizer.

[0034] like Figure 3As shown, the displacement sensor 2 and the shift force sensor 3 are connected to the host computer via a D / A conversion chip, and the D / A conversion chip converts analog signals into digital signals and transmits them to the host computer.

[0035] The measurement accuracy of the displacement sensor 2 is 1 / 1000, and the measurement accuracy of the shift force sensor 3 is 1 / 1000.

[0036] The working principle of a synchronizer balance spring detection device provided in the present application is described in detail below.

[0037] like Figure 2 As shown, a balance spring 10 is provided in the synchronizer, a top pin 8 is provided on the top of the balance spring 10, and the top pin 9 is used to limit the sliding sleeve 8. The sliding sleeve 8 is connected to the shift fork, the shift fork 6 drives the sliding sleeve to move, and the shift fork 6 is provided with a shift fork shaft hole.

[0038] The supporting shaft 5 in the synchronizer is horizontally clamped in the three-jaw chuck 7, the connecting shaft at the lower end of the shift force sensor 3 is connected to the fork shaft hole through bolts, and the connecting shaft at the upper end of the shift force sensor 3 is connected to the transmission sleeve through bolts.

[0039] Shake the handle to move the guide block along the axis, and then the shift force sensor 3 is subjected to force. At the same time, the shift fork is driven to move through the shift force sensor 3, and the shift fork causes the sleeve to move. During the movement, the sleeve presses down the push pin, and the push pin compresses the balance spring, thereby realizing the force measurement during the action of the balance spring. At the same time, the displacement sensor 2 measures the displacement of the transmission sleeve.

[0040] The data measured by the shift force sensor 3 and the displacement sensor 2 are converted into digital signals by an analog-to-digital converter and transmitted to the host computer for analysis.

[0041] like Figure 4 As shown, it is a curve diagram of the displacement and the force value of the balance spring when the sliding sleeve moves in different directions.

[0042] The synchronizer balance spring detection device has a simple structure and is easy to install and adjust. It adopts a high-precision sensor and can quickly and accurately measure the force value and corresponding displacement of the synchronizer balance spring during its working process. It can timely discover the influence of the balance spring and its related parts on the shifting performance, provide a theoretical basis for the improvement of the synchronizer, and play a guiding role in the next improvement of the synchronizer.

[0043] This test device can test the synchronizer alone, or install the synchronizer into the transmission and test the balance spring.

[0044] The above contents are only for explaining the technical idea of ​​the present invention and cannot be used to limit the protection scope of the present invention. Any changes made on the basis of the technical solution in accordance with the technical idea proposed by the present invention shall fall within the protection scope of the claims of the present invention.

Claims

1. A synchronizer balance spring detection device, characterized in that: It comprises a guide rail bracket, a three-jaw chuck (7), a displacement sensor (2), a host computer and a shift force sensor (3) for measuring the force value of a balance spring in a synchronizer during its operation; The top of the guide rail bracket is provided with a linear guide rail (1), the linear guide rail (1) is equipped with a movable guide block, the movable guide block can move horizontally along the axial direction of the linear guide rail (1), the movable guide block is connected to the upper end of the shift force sensor (3), the lower end of the shift force sensor (3) is connected to the shift fork of the synchronizer, the synchronizer is fixed on the three-jaw chuck (7), the displacement sensor (2) is arranged on the guide rail bracket, and is used to measure the displacement of the shift fork, and the shift force sensor (3) and the displacement sensor (2) are respectively connected to the host computer.

2. The synchronizer balance spring detection device according to claim 1, characterized in that: A fixing plate is arranged on the top of the guide rail bracket, and support plates are arranged at both ends of the bottom of the fixing plate. The linear guide rail (1) is arranged horizontally, and its two ends are rotatably connected to the two support plates.

3. The synchronizer balance spring detection device according to claim 1, characterized in that: The displacement sensor (2) is mounted on the support plate and is located below the linear guide rail (1).

4. The synchronizer balance spring detection device according to any one of claims 1 to 3, characterized in that: The linear guide rail (1) is a turbine screw.

5. The synchronizer balance spring detection device according to claim 1, characterized in that: The measurement accuracy of the displacement sensor (2) is 1 / 1000, and the measurement accuracy of the shift force sensor (3) is 1 / 1000.

6. The synchronizer balance spring detection device according to claim 1, characterized in that: The shift force sensor (3) and the displacement sensor (2) are respectively connected to the host computer via analog-to-digital conversion modules.

7. The synchronizer balance spring detection device according to claim 1, characterized in that: The shift force sensor (3) is provided with connecting shafts at both ends, wherein the connecting shaft at the upper end is fixedly connected to the moving guide block, and the connecting shaft at the lower end is connected to the shift fork shaft hole on the shift fork (6).

8. The synchronizer balance spring detection device according to claim 7, characterized in that: The connecting shaft at the lower end is connected to the fork shaft hole through a horizontally arranged bolt, and a gasket is arranged between the end of the fork shaft hole and the nut.

9. The synchronizer balance spring detection device according to claim 1, characterized in that: The three-jaw chuck (7) is horizontally arranged on a three-jaw bracket, and the three-jaw chuck (7) is used to clamp the support shaft (5) of the synchronizer.

10. The synchronizer balance spring detection device according to claim 1, characterized in that: A handle is provided at the end of the linear guide rail (1).

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