Horizontal multifunctional steering system test board

Abstract

The utility model relates to the technical field of automobile steering system test equipment, in particular to a horizontal multifunctional steering system test board, which comprises a bottom supporting mechanism, a fixed support, a displacement sensor, a guide rail moving mechanism, a speed reducer, a torque sensor, a shaft end connecting piece, a shield, a test sensor and a clamping jaw. A fixing support and a guide rail moving mechanism are installed on the top of the bottom supporting mechanism, a first shaft end connecting piece and a displacement sensor are arranged on the side, facing the guide rail moving mechanism, of the fixing support, and a speed reducer and a protective cover are installed on the top of a moving platform of the guide rail moving mechanism. Compared with the prior art, the horizontal multifunctional steering system testboard is designed, testing of sliding force, torsion clearance and torsion rigidity of an intermediate shaft part and testing of torsion rigidity of a steering column are achieved, research and development testing cost of enterprises is reduced, and a foundation is laid for subsequent research on safety performance and control performance of a steering system.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile steering system testing equipment, in particular to a horizontal multifunctional steering system testing platform. Background Art

[0002] As an important component of the entire vehicle system, the automotive steering system plays an indispensable role in the vehicle's handling stability and passive safety performance. As a guarantee of the various functions of the steering system, experimental testing equipment is particularly important.

[0003] At present, the cost of purchasing, using and maintaining various types of steering system functional testing equipment is high, which does not meet the development goal of reducing costs and increasing efficiency in the automotive industry.

[0004] Therefore, it is necessary to design a horizontal multifunctional steering system test bench to realize the slip force, torsional clearance and torsional stiffness testing of the steering system and reduce the R&D and testing costs of the enterprise. Summary of the Invention

[0005] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a horizontal multifunctional steering system test bench to realize the slip force, torsional clearance and torsional stiffness testing of the steering system, thereby reducing the R&D and testing costs of enterprises.

[0006] In order to achieve the above-mentioned purpose, the utility model is a horizontal multifunctional steering system test bench, which includes a bottom support mechanism, a fixed bracket, a displacement sensor, a guide rail moving mechanism, a reducer, a torque sensor, a shaft end connector, a shield, a test sensor, and a claw. The top of the bottom support mechanism is equipped with a fixed bracket and a guide rail moving mechanism. The side of the fixed bracket facing the guide rail moving mechanism is provided with a shaft end connector 1 and a displacement sensor. The top of the mobile platform of the guide rail moving mechanism is equipped with a reducer and a shield. A torque sensor is installed between the output end of the reducer and the shaft end connector 2. The shield is arranged outside the reducer and the torque sensor. One end of the test sensor is fixed to the shield, and the other end of the test sensor is connected to the claw. The test sensor is a torsion angle sensor or a load sensor.

[0007] The bottom support mechanism includes a marble base and a high-carbon steel bottom plate. The high-carbon steel bottom plate is fixed to the top of the marble base with bolt 1. The top of the high-carbon steel bottom plate is provided with a transverse T-slot and a longitudinal T-slot. The fixed bracket and the guide rail moving mechanism are connected to the transverse T-slot or the longitudinal T-slot and fixed with bolt 2.

[0008] The displacement sensor is a laser positioning sensor, and the measuring end of the laser positioning sensor faces the second shaft end connector.

[0009] The displacement sensor is a pull-rope type displacement sensor, and the stretching end of the pull-rope type displacement sensor is fixed to the second shaft end connector.

[0010] The guide rail moving mechanism includes a sliding guide rail, a manual wheel, a screw, and a moving platform. The sliding guide rail is installed on the top of the bottom support mechanism. The moving platform is slidably connected to the sliding guide rail. The manual wheel is connected to one end of the screw, and the middle of the screw is connected to the threaded hole at the bottom of the moving platform.

[0011] The first and second shaft end connectors are cylindrical structures, and the cylindrical structures match the shaft end structures of the intermediate shaft or steering column of the steering system.

[0012] The first and second shaft end connectors are respectively connected to the two shaft ends of the intermediate shaft or steering column of the steering system, and the clamping claws clamp the measuring part of the intermediate shaft or steering column of the steering system.

[0013] The input end of the reducer is externally connected to a torque gun.

[0014] Compared with the existing technology, the utility model designs a horizontal multifunctional steering system test bench to realize the sliding force, torsional clearance, torsional stiffness test of the intermediate shaft components, as well as the torsional stiffness test of the steering column, thereby reducing the company's R&D and testing costs and laying the foundation for subsequent research on the safety performance and control performance of the steering system. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural diagram of the present utility model.

[0016] Figure 2 This is an exploded view of the present invention. DETAILED DESCRIPTION

[0017] The present invention will now be further described with reference to the accompanying drawings.

[0018] See also Figure 1 、 Figure 2The present invention is a horizontal multifunctional steering system test bench, comprising a bottom support mechanism, a fixed bracket, a displacement sensor, a guide rail moving mechanism, a speed reducer, a torque sensor, a shaft end connector, a shield, a test sensor, and a claw. A fixed bracket 2 and a guide rail moving mechanism 4 are mounted on the top of the bottom support mechanism 1. A shaft end connector 21 and a displacement sensor 3 are provided on the side of the fixed bracket 2 facing the guide rail moving mechanism 4. A speed reducer 5 and a shield 8 are mounted on the top of the mobile platform 44 of the guide rail moving mechanism 4. A torque sensor 6 is mounted between the output end of the speed reducer 5 and the shaft end connector 7. The shield 8 is positioned outside the speed reducer 5 and the torque sensor 6. The shield 8 moves with the mobile platform 44 and can provide a certain degree of safety protection for the speed reducer 5, the torque sensor 6, and the operator. One end of the test sensor 9 is fixed to the shield 8, and the other end of the test sensor 9 is connected to the claw 10. The test sensor 9 is a torsion angle sensor or a load sensor. When performing a torsional stiffness test, the test sensor 9 uses a torsion angle sensor, and when performing a slip force test, the test sensor 9 uses a load sensor.

[0019] The bottom support mechanism 1 comprises a marble base 11 and a high-carbon steel base plate 12. The high-carbon steel base plate 12 is secured to the top of the marble base 11 with bolt 1. The marble base 11 offers high stability, a high damping coefficient, high strength and hardness, corrosion resistance, and a long service life. As a test equipment base, it effectively prevents external factors from affecting test results. The top of the high-carbon steel base plate 12 is provided with transverse and longitudinal T-slots. The fixed bracket 2 and guide rail movement mechanism 4 are connected to these transverse and longitudinal T-slots and secured with bolt 2.

[0020] In order to meet the requirements of high test accuracy, the displacement sensor 3 can be a laser positioning sensor. The measuring end of the laser positioning sensor faces the shaft end connector 2 7, and precise positioning is performed by measuring the distance between the laser positioning sensor and the shaft end connector 2 7.

[0021] In order to meet the low cost requirement, the displacement sensor 3 can be a pull-rope type displacement sensor, the stretching end of which is fixed to the shaft end connector 2 7, thereby positioning the intermediate shaft or steering column of the steering system.

[0022] The guide rail moving mechanism 4 includes a sliding guide rail 41, a manual wheel 42, a lead screw 43, and a movable platform 44. The sliding guide rail 41 is mounted on top of the bottom support mechanism 1. The movable platform 44 is slidably connected to the sliding guide rail 41. The manual wheel 42 is connected to one end of the lead screw 43, and the middle of the lead screw 43 is connected to the threaded hole at the bottom of the movable platform 44. During positioning, the movable platform 44 is moved by rotating the manual wheel 42 via the lead screw 43, thereby accurately positioning the intermediate shaft or steering column test position.

[0023] The first shaft end connector 21 and the second shaft end connector 7 are cylindrical structures, and the cylindrical structures match the shaft end structures of the intermediate shaft or steering column of the steering system.

[0024] The first shaft end connector 21 and the second shaft end connector 7 are respectively connected to the two shaft ends of the intermediate shaft or steering column of the steering system, and the claw 10 clamps the measuring part of the intermediate shaft or steering column of the steering system.

[0025] When performing a torsional stiffness test, an external torque gun is connected to the input end of the reducer 5 to apply torque.

[0026] The present invention utilizes a torsion angle sensor and a torque sensor 6 when testing the intermediate shaft's torsional stiffness and torsional clearance. First, the manual wheel 42 is rotated to move the movable platform 44 to the desired position, completing the intermediate shaft installation and securing it in the desired position. Next, an external torque gun is used to apply torque. A computer reads the data from the torsion angle sensor and torque sensor 6 and outputs a torque vs. rotation angle curve, with the slope representing the intermediate shaft's torsional stiffness. The torsional angle at a torque of ±1 Nm is also output, representing the intermediate shaft's torsional clearance.

[0027] The present invention utilizes a torsion angle sensor and a torque sensor 6 when testing the torsional stiffness of a steering column. First, the manual wheel 42 is rotated to move the movable platform 44 to the designated position, completing the installation of the steering column and securing it in the desired position. Next, an external torque gun is used to apply torque. A computer reads the data from the torsion angle sensor and torque sensor 6 and outputs a curve plotting torque versus rotation angle. The slope of the curve is used as the torsional stiffness of the steering column.

[0028] This utility model utilizes a load sensor and displacement sensor 3 when testing the intermediate shaft's slip force. First, the manual wheel 42 is rotated to move the movable platform 44 to the specified position, completing the intermediate shaft installation and securing it in the desired position. Next, the manual wheel 42 is rotated to move the movable platform 44 according to the test requirements. The computer reads the load sensor and displacement sensor 3 and outputs a load-displacement curve. The load represents the slip force.

[0029] The utility model designs a horizontal multifunctional steering system test bench to realize the sliding force, torsional clearance, torsional stiffness test of the intermediate shaft components, as well as the torsional stiffness test of the steering column, thereby reducing the company's R&D and testing costs and laying the foundation for subsequent research on the safety performance and control performance of the steering system.

Claims

1. A horizontal multifunctional steering system test bench, comprising a bottom support mechanism, a fixed bracket, a displacement sensor, a guide rail moving mechanism, a reducer, a torque sensor, a shaft end connector, a protective cover, a test sensor, and a clamping claw, characterized in that: A fixed bracket (2) and a guide rail moving mechanism (4) are installed on the top of the bottom support mechanism (1); a shaft end connecting piece (21) and a displacement sensor (3) are provided on the side of the fixed bracket (2) facing the guide rail moving mechanism (4); a reducer (5) and a shield (8) are installed on the top of the moving platform (44) of the guide rail moving mechanism (4); a torque sensor (6) is installed between the output end of the reducer (5) and the shaft end connecting piece (7); the shield (8) is arranged outside the reducer (5) and the torque sensor (6); one end of the test sensor (9) is fixed to the shield (8), and the other end of the test sensor (9) is connected to the claw (10); the test sensor (9) is a torsion angle sensor or a load sensor.

2. A horizontal multifunctional steering system test bench according to claim 1, characterized in that: The bottom support mechanism (1) includes a marble base (11) and a high-carbon steel bottom plate (12). The high-carbon steel bottom plate (12) is fixed to the top of the marble base (11) by bolt 1. The top of the high-carbon steel bottom plate (12) is provided with a transverse T-slot and a longitudinal T-slot. The fixed bracket (2) and the guide rail moving mechanism (4) are connected to the transverse T-slot or the longitudinal T-slot and fixed by bolt 2.

3. The horizontal multifunctional steering system test bench according to claim 1, characterized in that: The displacement sensor (3) is a laser positioning sensor, and the measuring end of the laser positioning sensor faces the second shaft end connector (7).

4. The horizontal multifunctional steering system test bench according to claim 1, characterized in that: The displacement sensor (3) is a pull-rope type displacement sensor, and the stretching end of the pull-rope type displacement sensor is fixed to the second shaft end connector (7).

5. The horizontal multifunctional steering system test bench according to claim 1, characterized in that: The guide rail moving mechanism (4) includes a sliding guide rail (41), a manual wheel (42), a screw (43), and a moving platform (44). The sliding guide rail (41) is installed on the top of the bottom support mechanism (1). The moving platform (44) is slidably connected to the sliding guide rail (41). The manual wheel (42) is connected to one end of the screw (43). The middle of the screw (43) is connected to the threaded hole at the bottom of the moving platform (44).

6. The horizontal multifunctional steering system test bench according to claim 1, characterized in that: The shaft end connecting member 1 (21) and the shaft end connecting member 2 (7) are cylindrical structures, and the cylindrical structures match the shaft end structures of the intermediate shaft or the steering column of the steering system.

7. The horizontal multifunctional steering system test bench according to claim 1, characterized in that: The shaft end connecting member 1 (21) and the shaft end connecting member 2 (7) are respectively connected to the two shaft ends of the intermediate shaft or the steering column of the steering system, and the claw (10) clamps the measuring part of the intermediate shaft or the steering column of the steering system.

8. The horizontal multifunctional steering system test bench according to claim 1, characterized in that: The input end of the reducer (5) is externally connected to a torque gun.

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