Auxiliary device for dismounting connecting assembly at front end of test bench

Abstract

The utility model discloses an auxiliary device for dismounting a connecting assembly at the front end of a test bed. The auxiliary device comprises a reducing spline shaft, the reducing spline shaft is connected with one end of the adapter, the other end of the adapter is connected with one end of the connecting rod, and the handle is installed at the other end of the connecting rod. The reducing spline shaft comprises a first spline shaft section, a second spline shaft section and a third spline shaft section which are integrally arranged, and the minimum diameters of the first spline shaft section, the second spline shaft section and the third spline shaft section are 1.5 inches, 2 inches and 1.75 inches respectively. The device solves the problem that the bolt damage rate is high in the connecting process of dismantling the front end of the test bed in the past, has the characteristics of strong functionality, simplicity and convenience in assembly, lower cost, easiness in implementation and the like, and is also applicable to after-sales field operation.

Description

Technical Field

[0001] This utility model belongs to the field of automotive parts testing technology, and relates to a disassembly device for the front-end connecting components of a test bench, specifically an auxiliary device for disassembling the front-end connecting components of a test bench. Background Technology

[0002] When testing the transmission assembly on a test bench, the transmission clutch housing is mounted on a bracket of the test bench, and the transmission input shaft is mounted through a spline sleeve on the test bench. There are three commonly used transmission input shaft spline sizes: 1.5 inches, 1.75 inches, and 2 inches. Because different transmissions have different input shaft spline sizes, the corresponding spline sleeve must be replaced when changing to a different transmission.

[0003] Currently, during the disassembly of the front-end connecting components of the test bench, the spline sleeve cannot be fixed because it rotates with the rotating support shaft. Only a high-torque pneumatic wrench can be used to remove the bolts. This method of operation is prone to causing the threads of the connecting bolts to break inside the rotating shaft due to the instantaneous high torque, which leads to a shortened service life of the rotating shaft and unnecessary wear and waste. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide an auxiliary device for disassembling the front-end connecting components of the test bench, thereby solving the technical problem of high damage rate of connecting bolts during the disassembly of the front-end connecting components of the test bench in the existing technology.

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

[0006] An auxiliary device for removing the front-end connecting assembly of a test bench includes a variable-diameter spline shaft; one end of the variable-diameter spline shaft is connected to an adapter, the other end of the adapter is connected to one end of a connecting rod, and a handle is installed on the other end of the connecting rod.

[0007] The variable diameter spline shaft includes an integrally formed first spline shaft section, a second spline shaft section, and a third spline shaft section; the variable diameter spline shaft has an inner hole along the axial direction for connecting an adapter; the maximum diameter D1 of the first spline shaft section is 1.5 inches; the maximum diameter D2 of the second spline shaft section is 2 inches; and the maximum diameter D3 of the third spline shaft section is 1.75 inches.

[0008] This utility model also has the following technical features:

[0009] The adapter includes an adapter body, one end of which is integrally provided with a spline shaft connection part, which is perpendicular to the adapter body; the other end of the adapter body is provided with an adapter threaded hole for installing a connecting rod.

[0010] The connecting rod includes a connecting rod body, an adapter connecting rod integrally provided on one end of the connecting rod body, the adapter connecting rod being provided with a first external thread of the connecting rod, the first external thread of the connecting rod matching the threaded hole of the adapter; and a handle connecting rod integrally provided on the other end of the connecting rod body, the handle connecting rod being provided with a second external thread of the connecting rod.

[0011] The handle includes a handle body, and a handle mounting threaded hole is provided in the handle body. The handle mounting threaded hole matches the second external thread of the connecting rod.

[0012] Compared with the prior art, this utility model has the following technical effects:

[0013] When disassembling and assembling the front-end connection components of the test bench, the auxiliary device of this invention can lock the spline sleeve of the main input shaft, preventing the rotating shaft from rotating. This allows for the use of a manual wrench to remove and install the connecting bolts, avoiding the damage to the bolt threads caused by using a high-torque pneumatic wrench. This device is versatile and practical, applicable to existing common test benches and compatible with the replacement of input shafts of three different specifications in existing transmission products. This invention solves the problem of high bolt damage rates during the disassembly of the front-end connection components of the test bench. It features strong functionality, simple assembly, low cost, and ease of implementation. This device is also suitable for after-sales field operations. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of the auxiliary device used to remove the front-end connection components of the test bench.

[0015] Figure 2 This is a schematic diagram of the structure of a variable diameter spline shaft. Figure 2 In the diagram: (A) is the external view, and (B) is the cross-sectional view.

[0016] Figure 3 This is a schematic diagram showing the parameters of the cross-section of a variable diameter spline shaft. Figure 3 In the diagram: (A) is a cross-section of the first segment of a 1.5-inch splined shaft. (B) is a cross-section of the second segment of a 2-inch splined shaft. (C) is a cross-section of the third segment of a 1.75-inch splined shaft.

[0017] Figure 4 This is a schematic diagram of the parameters of a variable diameter spline shaft.

[0018] Figure 5This is a schematic diagram of the adapter connector.

[0019] Figure 6 This is a schematic diagram of the connecting rod.

[0020] Figure 7 This is a schematic diagram of the handle.

[0021] Figure 8 This is a schematic diagram showing the connection between the auxiliary device used to remove the front-end connecting components of the test bench and the spline sleeve.

[0022] Figure 9 This is a schematic diagram showing the connection between the variable diameter spline shaft and the spline sleeve. Figure 9 (A) is a schematic diagram showing the connection between the first segment of a 1.5-inch splined shaft and the splined sleeve. (B) is a schematic diagram showing the connection between the third segment of a 1.75-inch splined shaft and the splined sleeve. (C) is a schematic diagram showing the connection between the second segment of a 2-inch splined shaft and the splined sleeve.

[0023] Figure 10 This is a schematic diagram of the front-end connection components of the test bench.

[0024] The meanings of the labels in the diagram are as follows: 1- Variable diameter spline shaft, 2- Adapter joint, 3- Connecting rod, 4- Handle, 5- Gearbox output shaft, 6- Spline sleeve, 7- Connecting bolt, 8- Rotary support shaft, 9- Rotary support assembly.

[0025] 101 - First section of splined shaft, 102 - Second section of splined shaft, 103 - Third section of splined shaft, 104 - Inner hole of splined shaft.

[0026] 201-Adapter body, 202-Splined shaft connection, 203-Adapter threaded hole.

[0027] 301-Connecting rod body, 302-Adapter connector connecting rod, 303-Handle connecting rod.

[0028] 401 - Handle body, 402 - Handle mounting threaded hole.

[0029] The specific contents of this utility model will be further explained in detail below with reference to the embodiments. Detailed Implementation

[0030] It should be noted that in this utility model, the "test bench front end connection assembly" refers to the assembly used to install the gearbox output shaft 5, such as... Figure 10 As shown, it includes a spline sleeve 6 connected to the transmission output shaft 5. The spline sleeve 6 is connected to one end of the rotating support shaft 8 by a connecting bolt 7. The other end of the rotating support shaft 8 is mounted on the rotating support assembly 9.

[0031] It should be noted that, unless otherwise specified, all components in this utility model are components known in the art.

[0032] 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. All equivalent modifications made based on the technical solution of this application fall within the protection scope of this utility model.

[0033] Example:

[0034] This embodiment provides an auxiliary device for disassembling the front-end connection assembly of the test bench, such as... Figure 1 As shown, it includes a variable diameter spline shaft 1; one end of the variable diameter spline shaft 1 is connected to an adapter 2, the other end of the adapter 2 is connected to one end of a connecting rod 3, and a handle 4 is installed on the other end of the connecting rod 3.

[0035] As one specific solution in this embodiment, such as Figure 2 As shown, the variable diameter spline shaft 1 includes an integrally formed first spline shaft section 101, a second spline shaft section 102, and a third spline shaft section 103; the variable diameter spline shaft 1 has an inner spline shaft hole 104 along the axial direction, which is used to connect the adapter 2.

[0036] As one specific solution in this embodiment, such as Figure 4 As shown, the maximum diameters of the first segment 101, the second segment 102, and the third segment 103 of the spline shaft are D1, D2, and D3, respectively. The structure must be designed to satisfy the condition D2 > D3 > D1. In this embodiment, the maximum diameter D1 of the first segment 101 is 1.5 inches; the maximum diameter D2 of the second segment 102 is 2 inches; and the maximum diameter D3 of the third segment 103 is 1.75 inches.

[0037] As one specific solution in this embodiment, such as Figure 4 As shown, the first segment 101 of the spline shaft has an axial length of L1; the second segment 102 has an axial length of L2; and the third segment 103 has an axial length of L3. The lengths L1, L2, and L3 are all adjustable, and the overall length L should be designed to accommodate machining relief grooves.

[0038] As one specific solution in this embodiment, such as Figure 5 As shown, the adapter 2 includes an adapter body 201, the cross-section of which is L-shaped; a spline shaft connection part 202 is integrally provided on one end of the adapter body 201, the spline shaft connection part 202 being perpendicular to the adapter body 201; an adapter threaded hole 203 is provided in the other end of the adapter body 201, the adapter threaded hole 203 being used to install the connecting rod 3.

[0039] As one specific solution in this embodiment, such as Figure 6 As shown, the connecting rod 3 includes a connecting rod body 301. An adapter connecting rod 302 is integrally provided on one end of the connecting rod body 301. The adapter connecting rod 302 is provided with a first external thread of the connecting rod, which matches the threaded hole of the adapter. A handle connecting rod 303 is integrally provided on the other end of the connecting rod body 301. A second external thread of the connecting rod is provided on the handle connecting rod 303.

[0040] As one specific solution in this embodiment, such as Figure 7 As shown, the handle 4 includes a handle body 401, which is a partially spherical structure (i.e., a sphere after tangential cutting). The handle body 401 has a handle mounting threaded hole 402, which matches the second external thread of the connecting rod.

[0041] The usage process of this utility model is as follows:

[0042] First, connect the handle 4 of the auxiliary device to the connecting rod 3, connect the connecting rod 3 to the adapter 2, connect the adapter 2 to the variable diameter spline shaft 1, and connect the variable diameter spline shaft 1 to the spline sleeve 6 on the test bench. Manually holding the handle 4 prevents the gearbox output shaft 5 from rotating, allowing for disassembly using tools such as a manual wrench. The connection structure between the auxiliary device and the front end connection assembly of the test bench is as follows: Figure 8 As shown.

[0043] Second, when connecting the variable diameter spline shaft 1 to the spline sleeve 6, different parts of the variable diameter spline shaft 1 are selectively installed according to the size specifications of the spline sleeve 6. The connection methods of the first section 101, the second section 102, and the third section 103 of the spline shaft with the spline sleeve 6 are as follows: Figure 9 As shown.

Claims

1. An auxiliary device for disassembling the front-end connecting assembly of a test bench, characterized in that, Includes a variable diameter spline shaft (1); the variable diameter spline shaft (1) is connected to one end of an adapter (2), the other end of the adapter (2) is connected to one end of a connecting rod (3), and a handle (4) is installed on the other end of the connecting rod (3); The variable diameter spline shaft (1) includes an integrally formed first spline shaft section (101), second spline shaft section (102), and third spline shaft section (103); the variable diameter spline shaft (1) has an axially oriented spline shaft inner hole (104) for connecting the adapter (2); the maximum diameter D1 of the first spline shaft section (101) is 1.5 inches; the maximum diameter D2 of the second spline shaft section (102) is 2 inches; and the maximum diameter D3 of the third spline shaft section (103) is 1.75 inches.

2. The auxiliary device for dismantling the front-end connection assembly of the test bench as described in claim 1, characterized in that, The adapter (2) includes an adapter body (201), one end of which is integrally provided with a spline shaft connection part (202), which is perpendicular to the adapter body (201); the other end of the adapter body (201) is provided with an adapter threaded hole (203), which is used to install the connecting rod (3).

3. The auxiliary device for disassembling the front-end connection assembly of the test bench as described in claim 2, characterized in that, The connecting rod (3) includes a connecting rod body (301), an adapter connecting rod (302) is integrally provided on one end of the connecting rod body (301), the adapter connecting rod (302) is provided with a first external thread of the connecting rod, and the first external thread of the connecting rod matches the threaded hole of the adapter; a handle connecting rod (303) is integrally provided on the other end of the connecting rod body (301), and a second external thread of the connecting rod is provided on the handle connecting rod (303).

4. The auxiliary device for disassembling the front-end connection assembly of the test bench as described in claim 3, characterized in that, The handle (4) includes a handle body (401) with a handle mounting threaded hole (402) inside the handle body (401), which matches the second external thread of the connecting rod.

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