Rotation torque testing tool for speed reducing mechanism of steering engine

Abstract

The utility model relates to the technical field of machinery, in particular to a rotating torque testing tool for a speed reducing mechanism of a steering engine, which comprises an angle adjusting mechanism, a profiling clamp and a connecting plate, the connecting plate is mounted at the top of the angle adjusting mechanism, and the profiling clamp is erected on the connecting plate. The angle adjusting mechanism comprises a first steering engine test board and a second steering engine test board, the first steering engine test board is installed above the second steering engine test board, and the installation direction of the first steering engine test board is perpendicular to the installation direction of the second steering engine test board. The profiling clamp comprises a supporting plate, a fixing plate and a sliding block. Compared with the prior art, by means of the angle adjusting mechanism and the profiling clamp, angle adjustment can be rapidly carried out in two planes, and steering engine speed reducing mechanisms of various models can be compatible. The device has the advantages of being simple in structure and convenient to operate, and the test efficiency and the installation precision are improved.

Description

Technical Field

[0001] This utility model relates to the field of mechanical technology, specifically to a tooling for testing the rotational torque of a steering gear reduction mechanism. Background Technology

[0002] Electric power steering is a key component of a car's steering system, providing assistance during the car's steering process.

[0003] The input and output sides of the steering gear reduction mechanism are connected to the drive motor and the steering rack, respectively. The drive motor provides assist torque, which is amplified by the reduction mechanism and transmitted to the steering rack. The magnitude of the rotational torque of the reduction mechanism itself determines the steering feel of the steering gear; at the same time, it has a direct impact on the rotational torque and rack movement force of the steering gear assembly.

[0004] Currently, torque testing is only available at the steering gear assembly level, not at the component level. To analyze related issues and identify problems early by conducting inspections and tests at the source, it is necessary to test the torque of the steering gear reduction mechanism.

[0005] Therefore, it is necessary to design a torque testing fixture for the steering gear reduction mechanism in order to achieve angle adjustment and fixation of the steering gear reduction mechanism. Summary of the Invention

[0006] The purpose of this invention is to overcome the shortcomings of the prior art and provide a torque testing fixture for a steering gear reduction mechanism, so as to achieve angle adjustment and fixation of the steering gear reduction mechanism.

[0007] To achieve the above objectives, this utility model provides a torque testing fixture for a steering gear reduction mechanism, comprising an angle adjustment mechanism, a contouring fixture, and a connecting plate. The connecting plate is mounted on the top of the angle adjustment mechanism, and the contouring fixture is mounted on the connecting plate. The angle adjustment mechanism includes a steering gear test bench one and a steering gear test bench two. Steering gear test bench one is mounted above steering gear test bench two, and the installation direction of steering gear test bench one is perpendicular to the installation direction of steering gear test bench two. The contouring fixture includes a support plate, a fixed plate, and a slider. Two support plates are mounted on the bottom sides of the fixed plate. A drive shaft hole is provided in the middle of the fixed plate. Slide groove one and slide groove two are provided on the rear sides of the fixed plate, respectively. The slider is slidably connected to slide groove one or slide groove two. Mounting holes in area A are respectively located on the slider and on one side of the rear end of the fixed plate. Mounting holes in area B are located at the front end of the fixed plate, near the edge of the drive shaft hole. Mounting holes in area C are respectively located on the slider and on the other side of the rear end of the fixed plate.

[0008] The steering gear test bench includes a mounting plane, a base, an upper rotating bracket, a lower rotating bracket, a worm gear, a worm assembly, and an adjusting shaft. The base is mounted above the steering gear test bench. The worm gear is mounted in the center of the base. The worm assembly is mounted on the mounting block at the bottom of the mounting plane and meshes with the worm gear. The adjusting shaft is mounted on the outer end of the worm assembly. A lower rotating bracket is mounted on each side of the base. An upper rotating bracket is mounted on each side of the bottom of the mounting plane. The arc-shaped concave surface at the bottom of the upper rotating bracket fits into the arc-shaped surface of the lower rotating bracket. A connecting plate is mounted on the top of the mounting plane.

[0009] The steering gear test bench two includes a mounting plane two, a base two, an upper rotating bracket two, a lower rotating bracket two, a worm gear two, a worm assembly two, and an adjusting shaft two. The worm gear two is installed in the center of the base two. The worm assembly two is installed on the mounting block at the bottom of the mounting plane two. The worm assembly two meshes with the worm gear two. The adjusting shaft two is installed at the outer end of the worm assembly two. A lower rotating bracket two is provided on each side of the base two. An upper rotating bracket two is installed on each side of the bottom of the mounting plane two. The arc-shaped concave surface at the bottom of the upper rotating bracket two fits with the arc-shaped surface of the lower rotating bracket two. The steering gear test bench one is installed on the top of the mounting plane two.

[0010] The A-zone mounting holes are at least four in total. Two are directly set on the fixed plate near the slider, one is set at the rear end of the fixed plate through an adjustable threaded hole assembly, and one is set on the surface of the slider.

[0011] The B area has at least five mounting holes.

[0012] The C-zone mounting holes are at least four, with three directly located on the fixing plate near the drive shaft hole and one located on the slider surface.

[0013] The drive shaft of the steering gear reduction mechanism passes through the drive shaft hole. Connector 1 passes through mounting hole 1 and mounting hole A and is fixed. Connector 2 passes through mounting hole 2 and mounting hole B and is fixed. Connector 3 passes through mounting hole 3 and mounting hole C and is fixed.

[0014] Compared with existing technologies, this invention, through its angle adjustment mechanism and contour clamp, enables rapid angle adjustment in two planes and is compatible with various models of steering gear reduction mechanisms. This invention features a simple structure and convenient operation, improving testing efficiency and installation accuracy. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the steering gear reduction mechanism.

[0016] Figure 2 This is a schematic diagram of the structure of this utility model.

[0017] Figure 3 This is a schematic diagram of the angle adjustment mechanism of this utility model.

[0018] Figure 4 This is a structural schematic diagram of the contour jig of this utility model from the bottom view.

[0019] Figure 5 This is a diagram showing the usage state of this utility model. Detailed Implementation

[0020] The present invention will now be further described with reference to the accompanying drawings.

[0021] See Figure 2 This utility model is a rotating torque testing fixture for a steering gear reduction mechanism, including an angle adjustment mechanism, a contouring fixture, and a connecting plate. The top of the angle adjustment mechanism 2 is equipped with a connecting plate 3, and the contouring fixture 4 is mounted on the connecting plate 3.

[0022] See Figure 3 The angle adjustment mechanism 2 includes a steering gear test bench one and a steering gear test bench two. The steering gear test bench one is installed above the steering gear test bench two, and the installation direction of the steering gear test bench one is perpendicular to the installation direction of the steering gear test bench two.

[0023] The steering gear test bench includes a mounting plane 211, a base 212, an upper rotating bracket 213, a lower rotating bracket 214, a worm gear 215, a worm assembly 217, and an adjusting shaft 216. The base 212 is installed above the steering gear test bench. The worm gear 215 is installed in the center of the base 212. The worm assembly 217 is installed on the mounting block at the bottom of the mounting plane 211. The worm assembly 217 meshes with the worm gear 215. The adjusting shaft 216 is installed at the outer end of the worm assembly 217. A lower rotating bracket 214 is provided on each side of the base 212. An upper rotating bracket 213 is installed on each side of the bottom of the mounting plane 211. The arc-shaped concave surface at the bottom of the upper rotating bracket 213 fits into the arc-shaped surface of the lower rotating bracket 214. A connecting plate 3 is installed on the top of the mounting plane 211.

[0024] The second steering gear test bench includes a second mounting plane 221, a second base 222, a second upper rotating bracket 223, a second lower rotating bracket 224, a second worm gear 225, a second worm assembly 227, and a second adjusting shaft 226. The second worm gear 225 is installed in the center of the second base 222. The second worm assembly 227 is installed on the mounting block at the bottom of the second mounting plane 221. The second worm assembly 227 meshes with the second worm gear 225. The second adjusting shaft 226 is installed at the outer end of the second worm assembly 227. A second lower rotating bracket 224 is provided on each side of the second base 222. An second upper rotating bracket 223 is installed on each side of the bottom of the second mounting plane 221. The arc-shaped concave surface at the bottom of the second upper rotating bracket 223 fits into the arc-shaped surface of the second lower rotating bracket 224. The first steering gear test bench is installed on the top of the second mounting plane 221.

[0025] The main function of the angle adjustment mechanism 2 is to adjust the tooling angle. By rotating the second adjustment shaft 226, the second worm gear assembly 227 is driven to rotate, thereby adjusting the angle of the steering gear test bench 1 forward or backward. By rotating the first adjustment shaft 216, the first worm gear assembly 217 is driven to rotate, thereby adjusting the angle of the connecting plate 3 and the contour jig 4 to the left or right, so that the installation angle of the steering gear reduction mechanism 1 meets the test requirements.

[0026] See Figure 4 The function of the contour jig 4 is to fix the steering gear reduction mechanism 1 under test. The contour jig 4 includes a support plate 41, a fixed plate 42, and a slider 43. The two support plates 41 are installed on the bottom sides of the fixed plate 42. The middle part of the fixed plate 42 is provided with a drive shaft hole 421. The rear sides of the fixed plate 42 are respectively provided with a first slide groove and a second slide groove 422. The slider 43 is slidably connected with the first slide groove or the second slide groove 422. The mounting holes 44 in area A are respectively provided on the slider 43 and on one side of the rear end of the fixed plate 42. The mounting holes 46 in area B are provided at the front end of the fixed plate 42 and close to the edge of the drive shaft hole 421. The mounting holes 47 in area C are respectively provided on the slider 43 and on the other side of the rear end of the fixed plate 42.

[0027] See Figure 1 The steering gear reduction mechanism 1 has three mounting hole areas around the drive shaft 11, namely mounting hole one 12, mounting hole two 13, and mounting hole three 14. The positions of mounting hole one 12, mounting hole two 13, and mounting hole three 14 vary between different models of steering gear reduction mechanisms.

[0028] To ensure compatibility with various steering gear reduction mechanisms, at least four mounting holes 44 in area A are provided. Two are directly located on the fixed plate 42 near the slider 43, one is located at the rear end of the fixed plate 42 via the adjustable threaded hole assembly 45, and one is located on the surface of the slider 43. The mounting holes 44 in area A correspond to mounting holes 12 of the steering gear reduction mechanism 1. During installation, first consider the mounting holes 44 in area A on the two fixed plates 42. If these two mounting holes 44 are insufficient, adjust the position of the slider 43 along the groove direction, or adjust the height axially via the adjustable threaded hole assembly 45 to accommodate mounting holes 12 of different steering gear reduction mechanisms.

[0029] There are at least five mounting holes 46 in area B. These mounting holes 46 correspond to mounting holes 13 of the steering gear reduction mechanism 1. During installation, simply select the appropriate mounting hole 46 in area B.

[0030] There are at least four C-section mounting holes 47. Three are directly located on the fixed plate 42 near the drive shaft hole 421, and one is located on the surface of the slider 43. The C-section mounting holes 47 correspond to mounting holes 14 of the steering gear reduction mechanism 1. During installation, first consider the three C-section mounting holes 47 on the fixed plate 42. If these three C-section mounting holes 47 are insufficient, remove the slider 43 and insert it into the slide groove 422. The mounting hole on the slider 43 then becomes the C-section mounting hole 47. Adjusting the position along the slide groove allows for the installation of mounting holes 14 of different models of steering gear reduction mechanisms.

[0031] Based on the structural features of the steering gear reduction mechanism mounting holes, there will be no situation where it is necessary to adjust the positions of mounting holes 44 in area A and 47 in area C simultaneously. Therefore, in this utility model, mounting holes 44 in area A and 47 in area C share the slider 43.

[0032] See Figure 5 In operation, this utility model roughly determines the position of the test fixture on the test bench based on the testing requirements. Then, the drive shaft 11 of the steering gear reduction mechanism 1 is passed through the drive shaft hole 421. Connector 1 passes through mounting hole 12 and mounting hole 44 in area A and is fixed. Connector 2 passes through mounting hole 2 13 and mounting hole 46 in area B and is fixed. Connector 3 passes through mounting hole 3 14 and mounting hole 47 in area C and is fixed, thus fixing the steering gear reduction mechanism 1 to the contour jig 4. After adjusting the steering gear reduction mechanism 1 to the required test angle using the angle adjustment mechanism 2, the steering gear reduction mechanism 1 and the angle adjustment mechanism 2 are tightened. The required sensors are connected, and the test is started. The drive shaft 11 of the steering gear reduction mechanism 1 is connected to the test steering wheel. The steering wheel has built-in torque and angle sensors. It rotates clockwise at a set speed along the tangent of the steering wheel rim, recording the torque and angle signals, and measuring and recording the relationship curve between torque and angle.

[0033] This invention, through an angle adjustment mechanism and a contour clamp, enables rapid angle adjustment within two planes and is compatible with various models of steering gear reduction mechanisms. This invention features a simple structure and convenient operation, improving testing efficiency and installation accuracy.

Claims

1. A test tool for testing the rotational torque of a steering gear deceleration mechanism, comprising an angle adjusting mechanism, a profiling fixture, and a connecting plate, characterized in that: The top of the angle adjusting mechanism (2) is provided with a connecting plate (3), and the profiling clamp (4) is arranged on the connecting plate (3), The angle adjusting mechanism (2) comprises a steering machine test bench one and a steering machine test bench two, the steering machine test bench one is installed above the steering machine test bench two, and the installation direction of the steering machine test bench one is perpendicular to the installation direction of the steering machine test bench two, The profiling clamp (4) comprises a support plate (41), a fixed plate (42) and a sliding block (43), two support plates (41) are installed on the bottom of the fixed plate (42) on both sides, the middle part of the fixed plate (42) is provided with a driving shaft hole (421), the rear end of the fixed plate (42) is provided with a sliding groove one and a sliding groove two (422) on both sides, the sliding block (43) is slidably connected with the sliding groove one or the sliding groove two (422), an A area mounting hole (44) is arranged on the sliding block (43) and the rear end of the fixed plate (42) on one side, a B area mounting hole (46) is arranged on the front end of the fixed plate (42) and close to the edge of the driving shaft hole (421), and a C area mounting hole (47) is arranged on the sliding block (43) and the rear end of the fixed plate (42) on the other side.

2. The test tool for the rotational torque of the deceleration mechanism of a steering gear according to claim 1, characterized in that: The steering machine test bench one comprises an installation plane one (211), a base one (212), an upper rotating support one (213), a lower rotating support one (214), a worm gear one (215), a worm assembly one (217) and an adjusting shaft one (216), the base one (212) is installed above the steering machine test bench two, the central part of the base one (212) is provided with the worm gear one (215), the installation block at the bottom of the installation plane one (211) is provided with the worm assembly one (217), the worm assembly one (217) is engaged with the worm gear one (215), the outer end of the worm assembly one (217) is provided with the adjusting shaft one (216), the two sides of the base one (212) are respectively provided with a lower rotating support one (214), the two sides of the bottom of the installation plane one (211) are respectively provided with an upper rotating support one (213), the arc-shaped concave surface of the bottom of the upper rotating support one (213) is attached to the arc-shaped surface of the lower rotating support one (214), and the top of the installation plane one (211) is provided with the connecting plate (3).

3. The test tool for the rotational torque of the deceleration mechanism of a steering gear according to claim 1, characterized in that: The second turning engine test bench two includes a second installation plane (221), a second base (222), a second upper rotating support (223), a second lower rotating support (224), a second worm gear (225), a second worm assembly (227), and a second adjusting shaft (226). The second base (222) is centrally provided with the second worm gear (225). The installation block at the bottom of the second installation plane (221) is provided with the second worm assembly (227). The second worm assembly (227) is engaged with the second worm gear (225). The outer end of the second worm assembly (227) is provided with the second adjusting shaft (226). The two sides of the second base (222) are respectively provided with a second lower rotating support (224). The two sides of the bottom of the second installation plane (221) are respectively provided with a second upper rotating support (223). The arc-shaped concave surface at the bottom of the second upper rotating support (223) is attached to the arc-shaped surface of the second lower rotating support (224). The top of the second installation plane (221) is provided with the first turning engine test bench.

4. The test tool for the rotational torque of the deceleration mechanism of a steering gear according to claim 1, characterized in that: The A area mounting hole (44) is at least four, two are directly arranged on the fixed plate (42) near the sliding block (43), one is arranged on the rear end of the fixed plate (42) through the adjustable threaded hole assembly (45), and the other is arranged on the surface of the sliding block (43).

5. The test tool for the rotational torque of the deceleration mechanism of a steering gear according to claim 1, characterized in that: The B area mounting hole (46) is at least five.

6. The test tool for the rotational torque of the deceleration mechanism of a steering gear according to claim 1, characterized in that: The C area mounting hole (47) is at least four, three of which are directly arranged on the fixed plate (42) near the driving shaft hole (421), and the other is arranged on the surface of the sliding block (43).

7. The test tool for the rotational torque of the deceleration mechanism of a steering gear according to claim 1, characterized in that: The driving shaft (11) of the turning engine speed reduction mechanism (1) passes through the driving shaft hole (421), the first connecting piece passes through the mounting hole one (12), the A area mounting hole (44) and is fixed, the second connecting piece passes through the mounting hole two (13), the B area mounting hole (46) and is fixed, and the third connecting piece passes through the mounting hole three (14), the C area mounting hole (47) and is fixed.

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