A shift control unit (SCU) shift force testing device

Abstract

The utility model discloses a kind of SCU gear shifting force testing devices, including SCU assembly, SCU assembly is installed on SCU mounting bracket assembly, SCU mounting bracket assembly includes SCU mounting plate and bracket bottom plate, SCU mounting plate is equipped with SCU mounting hole for installing SCU assembly.SCU yoke on SCU assembly is connected with SCU yoke piece, SCU yoke piece is sleeved on gear shift axle, the middle part of gear shift axle is connected with gear shift axle support, gear shift axle support is connected with gear shift axle support bottom block, gear shift axle support bottom block is connected with bracket bottom plate;Gear shift axle is connected with joint bearing, joint bearing is connected with force sensor, force sensor is connected with force sensor support, force sensor support is connected with force sensor support bottom block, force sensor support bottom block is connected with bracket bottom plate.The SCU special mounting bracket of the device, using force sensor, realize the measurement of each yoke output force value of SCU, overall gantry design is compact, test is convenient.

Description

Technical Field

[0001] This utility model belongs to the technical field of AMT automatic transmissions for commercial vehicles, and relates to shift testing devices, specifically an SCU shift force testing device. Background Technology

[0002] With the development of the automotive industry and the increasing demands of drivers for vehicle control, the market for AMT transmissions is growing and is currently one of the main development directions. Consequently, the performance requirements for the key component of AMT – the SCU – are also gradually increasing. The SCU integrates the TCU, sensors, actuators, and mechanics into one unit, controlling the shift cylinder, clutch, and brake in a unified manner. Controlling the output force and shift speed through the shift cylinder is also an important indicator of the SCU's shifting performance.

[0003] Currently, the shifting force of the SCU mainly relies on theoretical calculations or manual push-pull force gauge measurements, lacking a dedicated and reliable shifting force testing bench. Summary of the Invention

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to propose an SCU shifting force testing device to solve the technical problem that it is difficult to conveniently and accurately test the SCU shifting force in the existing technology.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] A shifting force testing device for a switch unit (SCU) includes an SCU assembly, wherein the SCU assembly is detachably mounted on an SCU mounting bracket assembly.

[0007] The SCU mounting bracket assembly includes a cuboid SCU mounting plate, which is connected to a cuboid bracket base plate via four columns. The SCU mounting plate has vertically extending SCU mounting holes for mounting the SCU assembly. A guide strip is provided in the middle of the bracket base plate along the left-right direction.

[0008] The SCU assembly has multiple SCU shift forks located between the SCU mounting plate and the bracket base plate. The SCU shift forks are detachably connected to each other. The SCU shift fork plate is detachably sleeved on the left end of the shift shaft. The middle part of the shift shaft is connected to the shift shaft bracket. The shift shaft bracket is connected to a cuboid shift shaft bracket base block. The shift shaft bracket base block is detachably fastened to the bracket base plate. The right end of the shift shaft is connected to the left end of the spherical bearing. The right end of the spherical bearing is connected to the left end of the force sensor. The right end of the force sensor is connected to the force sensor bracket. The force sensor bracket is connected to the force sensor bracket base block. The force sensor bracket base block is also detachably fastened to the bracket base plate.

[0009] This utility model also has the following technical features:

[0010] The shift shaft bracket includes a shift shaft bracket mounting block and a shift shaft bracket connecting block that are integrally connected in sequence. The height of the shift shaft bracket mounting block is greater than the height of the shift shaft bracket connecting block, the width of the shift shaft bracket mounting block is less than the width of the shift shaft bracket connecting block, and the length of the shift shaft bracket mounting block is equal to the length of the shift shaft bracket connecting block.

[0011] The shift shaft bracket connecting block is integrally set at the upper middle part of the shift shaft bracket base block, and the front and rear end faces of the short side of the shift shaft bracket connecting block are flush with the front and rear end faces of the long side of the shift shaft bracket base block.

[0012] The shift shaft bracket mounting block has a horizontally extending shift shaft mounting hole in the middle, and the middle part of the shift shaft is fitted into the shift shaft mounting hole.

[0013] The lower center of the shift shaft bracket base block is provided with a first keyway along the left-right direction, and a guide strip is installed in the first keyway so that the shift shaft bracket base block can be located at different positions on the bracket base plate.

[0014] The shift shaft bracket base block has two vertically penetrating first elongated holes on one long side, which are arranged horizontally. On the other long side of the shift shaft bracket base block, there are two vertically penetrating second elongated holes, which are arranged horizontally. The two first elongated holes and the two second elongated holes correspond to each other front to back. The front end of the shift shaft bracket connecting block is located between the two first elongated holes, and the rear end of the shift shaft bracket connecting block is located between the two second elongated holes.

[0015] The force sensor bracket includes a force sensor bracket mounting block, which comprises a first force sensor bracket mounting block and a second force sensor bracket mounting block integrally arranged vertically. The length of the first force sensor bracket mounting block is less than the length of the second force sensor bracket mounting block. The widths of the first and second force sensor bracket mounting blocks are equal. The height of the first force sensor bracket mounting block is greater than the height of the second force sensor bracket mounting block. The left end face of the first force sensor bracket mounting block is flush with the left end face of the second force sensor bracket mounting block.

[0016] The first force sensor bracket mounting block has a third elongated hole that runs horizontally through the middle, and the right end of the force sensor is installed in the third elongated hole.

[0017] The second force sensor bracket mounting block is integrally set at the upper middle part of the force sensor bracket connecting block. The front and rear sides of the force sensor bracket connecting block are respectively provided with vertically extending fourth elongated holes, and the second force sensor bracket mounting block is located between the two fourth elongated holes.

[0018] The force sensor bracket base includes a force sensor bracket base connecting block and a force sensor bracket base fixing block that are integrally set at the top and bottom. The lengths of the force sensor bracket base connecting block and the force sensor bracket base fixing block are equal. The width of the force sensor bracket base connecting block is less than the width of the force sensor bracket base fixing block. The height of the force sensor bracket base connecting block is greater than the height of the force sensor bracket base fixing block. The force sensor bracket base connecting block is integrally set at the upper middle of the force sensor bracket base fixing block.

[0019] The lower end face of the second force sensor bracket mounting block contacts the upper end face of the force sensor bracket bottom block connecting block. The left and right relative positions of the second force sensor bracket mounting block and the force sensor bracket bottom block connecting block can be adjusted and locked by a bolt passing through the fourth elongated hole.

[0020] The lower center of the fixing block of the force sensor bracket base is provided with a second keyway along the left and right direction. The guide strip is installed in the second keyway so that the force sensor bracket base can be located at different positions on the bracket base plate.

[0021] The force sensor bracket base fixing block has vertically protruding fifth elongated holes on its front and rear sides, with the two fifth elongated holes corresponding to each other. The force sensor bracket base connecting block is located between the two fifth elongated holes.

[0022] The force sensor bracket base block is detachably fastened to different positions on the bracket base plate via guide strips, a second keyway, a fifth elongated hole, and bolts.

[0023] The upper and lower ends of the four columns are located at the corners of the SCU mounting plate and the bracket base plate, respectively, and the four columns are arranged symmetrically in pairs.

[0024] The SCU mounting hole is located in the middle left of the SCU mounting plate.

[0025] Compared with the prior art, the present invention has the following beneficial technical effects:

[0026] The SCU shifting force testing device proposed in this utility model is designed with a dedicated SCU mounting bracket to meet the testing requirements of SCU shifting force. It uses a high-precision force sensor to measure the output force value of each shift fork of the SCU. The overall frame design is compact, easy to install, and provides accurate measurement data, enabling precise and convenient testing of SCU shifting force. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of the SCU shifting force testing device.

[0028] Figure 2 This is a schematic diagram of the structure at point A of the SCU shift force testing device.

[0029] The meanings of the labels in the diagram are as follows: 1-SCU assembly, 2-SCU mounting bracket assembly, 3-guide bar, 4-SCU shift fork, 5-SCU shift fork blade, 6-shift shaft, 7-shift shaft bracket, 8-shift shaft bracket base block, 9-spherical bearing, 10-force sensor, 11-force sensor bracket, 12-force sensor bracket base block.

[0030] 201-SCU mounting plate, 202-Column, 203-Bracket base plate, 204-SCU mounting hole.

[0031] 701-Shift shaft bracket mounting block, 702-Shift shaft bracket connecting block, 703-Shift shaft mounting hole.

[0032] 801 - First keyway, 802 - First elongated hole, 803 - Second elongated hole.

[0033] 1101-Force sensor bracket mounting block, 1102-Force sensor bracket connecting block, 1103-Fourth elongated hole.

[0034] 1201-Force sensor bracket base connecting block, 1202-Force sensor bracket base fixing block, 1203-Second keyway, 1204-Fifth elongated hole.

[0035] 110101 - First force sensor bracket mounting block, 110102 - Second force sensor bracket mounting block, 110103 - Third elongated hole.

[0036] The specific content of this utility model will be further explained in detail below with reference to the embodiments. Detailed Implementation

[0037] It should be noted that, unless otherwise specified, all devices and components in this utility model are based on devices and components known in the prior art.

[0038] In this embodiment, SCU (shift control unit) is the gear shift control module.

[0039] Following the above technical solution, the following are specific embodiments of this utility model. It should be noted that this utility model is not limited to the following specific embodiments, and all equivalent modifications made based on the technical solution of this application fall within the protection scope of this utility model.

[0040] Example:

[0041] This embodiment provides an SCU shifting force testing device, including an SCU assembly 1, such as... Figure 1 As shown, the SCU assembly 1 is detachably mounted on the SCU mounting bracket assembly 2.

[0042] like Figure 1 As shown, the SCU mounting bracket assembly 2 includes a cuboid SCU mounting plate 201. The SCU mounting plate 201 is connected to the cuboid bracket base plate 203 via four columns 202. The SCU mounting plate 201 has vertically extending SCU mounting holes 204 for mounting the SCU assembly 1. A guide strip 3 is provided in the middle of the bracket base plate 203 along the left-right direction.

[0043] like Figure 1 As shown, multiple SCU shift forks 4 on the SCU assembly 1 are located between the SCU mounting plate 201 and the bracket base plate 203. The SCU shift forks 4 are detachably connected to the SCU shift fork plates 5. The SCU shift fork plates 5 are detachably sleeved on the left end of the shift shaft 6. The middle part of the shift shaft 6 is connected to the shift shaft bracket 7. The shift shaft bracket 7 is connected to the cuboid shift shaft bracket base block 8. The shift shaft bracket base block 8 is detachably fastened to the bracket base plate 203. The right end of the shift shaft 6 is connected to the left end of the spherical bearing 9. The right end of the spherical bearing 9 is connected to the left end of the force sensor 10. The right end of the force sensor 10 is connected to the force sensor bracket 11. The force sensor bracket 11 is connected to the force sensor bracket base block 12. The force sensor bracket base block 12 is also detachably fastened to the bracket base plate 203.

[0044] As a preferred embodiment of this invention, such as Figure 1 and Figure 2 As shown, the shift shaft bracket 7 includes a shift shaft bracket mounting block 701 and a shift shaft bracket connecting block 702 that are integrally connected vertically. The height of the shift shaft bracket mounting block 701 is greater than the height of the shift shaft bracket connecting block 702, the width of the shift shaft bracket mounting block 701 is less than the width of the shift shaft bracket connecting block 702, and the length of the shift shaft bracket mounting block 701 is equal to the length of the shift shaft bracket connecting block 702.

[0045] As a preferred embodiment of this invention, such as Figure 1 and Figure 2 As shown, the shift shaft bracket connecting block 702 is integrally set at the upper middle part of the shift shaft bracket base block 8, and the front and rear end faces of the short side of the shift shaft bracket connecting block 702 are flush with the front and rear end faces of the long side of the shift shaft bracket base block 8.

[0046] As a preferred embodiment of this invention, such as Figure 1 and Figure 2 As shown, the shift shaft bracket mounting block 701 has a shift shaft mounting hole 703 that runs through the left and right sides in the middle, and the shift shaft 6 is installed in the shift shaft mounting hole 703 in the middle.

[0047] As a preferred embodiment of this invention, such as Figure 1 and Figure 2 As shown, a first keyway 801 is provided in the middle of the lower end of the shift shaft bracket base block 8 along the left and right direction. The guide strip 3 is installed in the first keyway 801 so that the shift shaft bracket base block 8 can be located at different positions of the bracket base plate 203.

[0048] As a preferred embodiment of this invention, such as Figure 1 and Figure 2 As shown, two vertically extending first elongated holes 802 are vertically formed on one long side of the shift shaft bracket base block 8, and the two first elongated holes 802 are arranged horizontally. Two vertically extending second elongated holes 803 are vertically formed on the other long side of the shift shaft bracket base block 8, and the two second elongated holes 803 are arranged horizontally. The two first elongated holes 802 and the two second elongated holes 803 correspond to each other front and back. The front end of the shift shaft bracket connecting block 702 is located between the two first elongated holes 802, and the rear end of the shift shaft bracket connecting block 702 is located between the two second elongated holes 803.

[0049] In this preferred embodiment, the shift shaft bracket base block 8 is detachably fastened to different positions on the bracket base plate 203 by bolts through the guide strip 3, the first keyway 801, the first elongated hole 802, and the second elongated hole 803.

[0050] As a preferred embodiment of this invention, such as Figure 1 and Figure 2 As shown, the force sensor bracket 11 includes a force sensor bracket mounting block 1101. The force sensor bracket mounting block 1101 includes a first force sensor bracket mounting block 110101 and a second force sensor bracket mounting block 110102, which are integrally arranged vertically. The length of the first force sensor bracket mounting block 110101 is less than the length of the second force sensor bracket mounting block 110102. The widths of the first force sensor bracket mounting block 110101 and the second force sensor bracket mounting block 110102 are equal. The height of the first force sensor bracket mounting block 110101 is greater than the height of the second force sensor bracket mounting block 110102. The left end face of the first force sensor bracket mounting block 110101 is flush with the left end face of the second force sensor bracket mounting block 110102.

[0051] As a preferred embodiment of this invention, such as Figure 1 and Figure 2As shown, a third elongated hole 110103 is horizontally opened in the middle of the first force sensor bracket mounting block 110101, which is a through hole in the left and right. The right end of the force sensor 10 is installed in the third elongated hole 110103. The axial position of the force sensor 10 in the third elongated hole 110103 is adjustable. The specific adjustment process can adopt the adjustment process commonly used in the field to ensure that the force output is in a straight line.

[0052] As a preferred embodiment of this invention, such as Figure 1 and Figure 2 As shown, the second force sensor bracket mounting block 110102 is integrally set in the upper middle part of the force sensor bracket connecting block 1102. The front and rear sides of the force sensor bracket connecting block 1102 are respectively provided with vertically extending fourth elongated holes 1103 to facilitate position adjustment when replacing the SCU shift fork 4. The second force sensor bracket mounting block 110102 is located between the two fourth elongated holes 1103.

[0053] As a preferred embodiment of this invention, such as Figure 1 and Figure 2 As shown, the force sensor bracket base 12 includes a force sensor bracket base connecting block 1201 and a force sensor bracket base fixing block 1202, which are integrally set at the top and bottom. The lengths of the force sensor bracket base connecting block 1201 and the force sensor bracket base fixing block 1202 are equal. The width of the force sensor bracket base connecting block 1201 is smaller than the width of the force sensor bracket base fixing block 1202. The height of the force sensor bracket base connecting block 1201 is greater than the height of the force sensor bracket base fixing block 1202. The force sensor bracket base connecting block 1201 is integrally set at the upper middle part of the force sensor bracket base fixing block 1202.

[0054] As a preferred embodiment of this invention, such as Figure 1 and Figure 2 As shown, the lower end face of the second force sensor bracket mounting block 1102 contacts the upper end face of the force sensor bracket bottom block connecting block 1201. The left and right relative positions of the second force sensor bracket mounting block 1102 and the force sensor bracket bottom block connecting block 1201 can be adjusted and locked by the bolt passing through the fourth elongated hole 1103.

[0055] As a preferred embodiment of this invention, such as Figure 1 and Figure 2 As shown, a second keyway 1203 is provided at the lower center of the force sensor bracket base fixing block 1202 along the left and right direction. The guide strip 3 is installed in the second keyway 1203, so that the force sensor bracket base block 12 can be located at different positions of the bracket base plate 203.

[0056] As a preferred embodiment of this invention, such as Figure 1 and Figure 2 As shown, the front and rear sides of the force sensor bracket base fixing block 1202 are respectively provided with vertically extending fifth elongated holes 1204, with the two fifth elongated holes 1204 corresponding to each other. The force sensor bracket base connecting block 1201 is located between the two fifth elongated holes 1204.

[0057] As a preferred embodiment of this invention, such as Figure 1 and Figure 2 As shown, the force sensor bracket base block 12 can be detachably fastened to different positions on the bracket base plate 203 via the guide bar 3, the second keyway 1203, the fifth elongated hole 1204, and bolts.

[0058] As a preferred embodiment of this invention, such as Figure 1 and Figure 2 As shown, the upper and lower ends of the four columns 202 are located at the corners of the SCU mounting plate 201 and the bracket base plate 203, respectively, and the four columns 202 are arranged symmetrically in pairs.

[0059] As a preferred embodiment of this invention, such as Figure 1 As shown, the SCU mounting hole 204 is located in the middle left of the SCU mounting plate 201.

[0060] In this embodiment, the cooperation between the first keyway 801 and the second keyway 1203 and the guide bar 3 can ensure that the center positions of the shift shaft bracket 7, shift shaft 6, joint bearing 9, force sensor 10 and force sensor bracket 11 are on a straight line, and can ensure that the direction remains unchanged when the test SCU shift fork 4 is replaced.

[0061] In this embodiment, a linear bearing is built into the shift shaft mounting hole 703, which can reduce the lateral friction of the shift shaft 6.

[0062] In this embodiment, the working principle of the SCU shifting force testing device is as follows:

[0063] The SCU shift fork 4 on the SCU assembly 1 outputs force to the SCU shift fork plate 5. The SCU shift fork plate 5 transmits the shift fork output force to the shift shaft 6. The middle part of the shift shaft 6 is fitted into the shift shaft mounting hole 703. The shift shaft mounting hole 703 has a built-in linear bearing, which can reduce the lateral friction of the shift shaft 6. After leaving enough lateral space, the first keyway 801 at the bottom of the shift shaft bracket base block 8 is locked onto the guide bar 3 and fastened to the bracket base plate 203 with bolts, ensuring that the SCU shift fork 4 transmits the shift fork output force to the SCU shift fork plate 5 and the shift shaft 6 when shifting gears.

[0064] The right end of the shift shaft 6 is connected to the spherical bearing 9, which in turn connects to the force sensor 10. The right end of the force sensor 10 is fixed in the third elongated hole 110103 of the first force sensor bracket mounting block 110101. The third elongated hole 110103 can adjust the axial position of the force sensor 10 to ensure that the force output is in a straight line. The fourth elongated hole 1103 on the force sensor bracket connecting block 1102 can adjust the horizontal position of the force sensor 10. The second keyway 1203 at the lower end of the force sensor bracket base fixing block 1202 is engaged with the guide bar 3 and secured to the bracket base plate 203 with bolts. This ensures that the force transmission chain composed of the SCU shift fork 5, shift shaft 6, spherical bearing 9, and force sensor 10 remains stationary when the SCU shift fork 4 shifts gears, thus allowing the force sensor 10 to collect the shifting force of the SCU assembly 1.

[0065] Remove the shift shaft bracket base block 8 and the force sensor bracket base block 12, replace the other SCU shift fork 5, and repeat the above steps to complete the shift force test of the other SCU shift forks 4 of the SCU assembly 1.

Claims

1. A shift force testing device for a shift control unit (SCU), comprising an SCU assembly (1), characterized in that, The SCU assembly (1) is detachably mounted on the SCU mounting bracket assembly (2); The SCU mounting bracket assembly (2) includes a cuboid SCU mounting plate (201), which is connected to a cuboid bracket base plate (203) via four columns (202). The SCU mounting plate (201) has vertically through-holes (204) for mounting the SCU assembly (1). A guide strip (3) is provided in the middle of the bracket base plate (203) along the left and right direction. The multiple SCU shift forks (4) on the SCU assembly (1) are located between the SCU mounting plate (201) and the bracket base plate (203). The SCU shift forks (4) are detachably connected to the SCU shift fork plates (5). The SCU shift fork plates (5) are detachably sleeved on the left end of the shift shaft (6). The middle part of the shift shaft (6) is connected to the shift shaft bracket (7). The shift shaft bracket (7) is connected to the cuboid shift shaft bracket base block (8). The bracket base block (8) is detachably fastened to the bracket base plate (203). The right end of the shift shaft (6) is connected to the left end of the joint bearing (9). The right end of the joint bearing (9) is connected to the left end of the force sensor (10). The right end of the force sensor (10) is connected to the force sensor bracket (11). The force sensor bracket (11) is connected to the force sensor bracket base block (12). The force sensor bracket base block (12) is also detachably fastened to the bracket base plate (203).

2. The SCU shifting force testing device as described in claim 1, characterized in that, The shift shaft bracket (7) includes a shift shaft bracket mounting block (701) and a shift shaft bracket connecting block (702) that are integrally connected in sequence. The height of the shift shaft bracket mounting block (701) is greater than the height of the shift shaft bracket connecting block (702), the width of the shift shaft bracket mounting block (701) is less than the width of the shift shaft bracket connecting block (702), and the length of the shift shaft bracket mounting block (701) is equal to the length of the shift shaft bracket connecting block (702). The shift shaft bracket connecting block (702) is integrally set at the upper middle part of the shift shaft bracket base block (8), and the front and rear end faces of the short side of the shift shaft bracket connecting block (702) are flush with the front and rear end faces of the long side of the shift shaft bracket base block (8). The shift shaft bracket mounting block (701) has a shift shaft mounting hole (703) that runs through the left and right sides in the middle, and the shift shaft (6) is installed in the shift shaft mounting hole (703) in the middle. The lower middle part of the shift shaft bracket base block (8) is provided with a first keyway (801) in the left and right direction. The guide strip (3) is installed in the first keyway (801) so that the shift shaft bracket base block (8) can be located at different positions on the bracket base plate (203). The shift shaft bracket base block (8) has two vertically extending first elongated holes (802) on one long side, which are arranged horizontally. The shift shaft bracket base block (8) has two vertically extending second elongated holes (803) on the other long side, which are arranged horizontally. The two first elongated holes (802) and the two second elongated holes (803) are arranged vertically. The front end of the shift shaft bracket connecting block (702) is located between the two first elongated holes (802), and the rear end of the shift shaft bracket connecting block (702) is located between the two second elongated holes (803).

3. The SCU shifting force testing device as described in claim 1, characterized in that, The force sensor bracket (11) includes a force sensor bracket mounting block (1101), which includes a first force sensor bracket mounting block (110101) and a second force sensor bracket mounting block (110102) integrally arranged vertically. The length of the first force sensor bracket mounting block (110101) is less than the length of the second force sensor bracket mounting block (110102). The widths of the first force sensor bracket mounting block (110101) and the second force sensor bracket mounting block (110102) are equal. The height of the first force sensor bracket mounting block (110101) is greater than the height of the second force sensor bracket mounting block (110102). The left end face of the first force sensor bracket mounting block (110101) is flush with the left end face of the second force sensor bracket mounting block (110102). The first force sensor bracket mounting block (110101) has a third elongated hole (110103) that runs horizontally through the middle, and the right end of the force sensor (10) is installed in the third elongated hole (110103).

4. The SCU shifting force testing device as described in claim 3, characterized in that, The second force sensor bracket mounting block (110102) is integrally set on the upper middle part of the force sensor bracket connecting block (1102). The front and rear sides of the force sensor bracket connecting block (1102) are respectively provided with vertically extending fourth elongated holes (1103). The second force sensor bracket mounting block (110102) is located between the two fourth elongated holes (1103).

5. The SCU shifting force testing device as described in claim 4, characterized in that, The force sensor bracket base block (12) includes a force sensor bracket base block connecting block (1201) and a force sensor bracket base block fixing block (1202) that are integrated vertically. The lengths of the force sensor bracket base block connecting block (1201) and the force sensor bracket base block fixing block (1202) are equal. The width of the force sensor bracket base block connecting block (1201) is smaller than the width of the force sensor bracket base block fixing block (1202). The height of the force sensor bracket base block connecting block (1201) is greater than the height of the force sensor bracket base block fixing block (1202). The force sensor bracket base block connecting block (1201) is integrated horizontally at the upper middle part of the force sensor bracket base block fixing block (1202). The lower end face of the force sensor bracket connecting block (1102) contacts the upper end face of the force sensor bracket bottom block connecting block (1201). The left and right relative positions of the force sensor bracket connecting block (1102) and the force sensor bracket bottom block connecting block (1201) can be adjusted and locked by a bolt passing through the fourth elongated hole (1103).

6. The SCU shifting force testing device as described in claim 5, characterized in that, The lower middle part of the force sensor bracket base fixing block (1202) is provided with a second keyway (1203) along the left and right direction. The guide strip (3) is installed in the second keyway (1203) so that the force sensor bracket base block (12) can be located at different positions on the bracket base plate (203). The force sensor bracket base fixing block (1202) has vertically opened fifth elongated holes (1204) on its front and rear sides, with the two fifth elongated holes (1204) corresponding to each other. The force sensor bracket base connecting block (1201) is located between the two fifth elongated holes (1204).

7. The SCU shifting force testing device as described in claim 1, characterized in that, The upper and lower ends of the four columns (202) are located at the corners of the SCU mounting plate (201) and the bracket base plate (203), respectively, and the four columns (202) are arranged symmetrically in pairs.

8. The SCU shifting force testing device as described in claim 1, characterized in that, The SCU mounting hole (204) is located in the middle left of the SCU mounting plate (201).

Images