Parallel shaft type power-assisted steering motor belt pulley pulling-out test clamp

Abstract

The utility model relates to the technical field of machinery, in particular to a parallel shaft type power-assisted steering motor belt pulley pulling-out test fixture, which comprises a bottom plate, a motor placement table, a hydraulic mechanism, a jack, a clamping mechanism and a mounting bracket, the hydraulic mechanism is mounted on the bottom plate, and the output end of the hydraulic mechanism is connected with one end of the jack; the jack is installed at the front end of the clamping mechanism, the clamping mechanism is fixed to the bottom plate through the installation support, the motor containing table is connected with the bottom plate in a sliding mode, the parallel shaft type power-assisted steering motor is placed on the motor containing table, and the rear end of the clamping mechanism clamps a belt pulley at the front end of the parallel shaft type power-assisted steering motor. The other end of the jack abuts against a motor shaft in the center of the belt pulley. Compared with the prior art, through the cooperation of the hydraulic mechanism, the jack and the clamping mechanism, the belt pulley is pulled out, the stability, convenience and consistency of pulling-out operation are guaranteed, and damage to the parallel shaft type power-assisted steering motor is avoided.

Description

Technical Field

[0001] This utility model relates to the field of mechanical technology, specifically a parallel shaft steering power motor pulley removal test fixture. Background Technology

[0002] like Figure 1 As shown, in the parallel shaft power steering motor assembly, a pulley is used as the motor transmission mechanism, and a pulley 2 is fitted around the motor shaft 1. During the test, it is necessary to lock the parallel shaft power steering motor, but due to the presence of the pulley, the existing motor shaft locking fixture cannot be used.

[0003] To solve this problem, modifications to the motor shaft locking fixture were considered. However, the helical tooth design of the motor shaft locking fixture in conjunction with the pulley presented challenges due to high costs and technical difficulties. Since the pulley was not required during the experiment, after comprehensively considering cost and feasibility, the final solution chosen was to remove the pulley from the motor shaft.

[0004] Therefore, it is necessary to design a test fixture for removing the pulley of a parallel shaft power steering motor, which can separate the pulley from the motor shaft without damaging the motor, so that the existing motor shaft locking fixture can lock the parallel shaft power steering motor. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a test fixture for removing the pulley of a parallel shaft power steering motor. This fixture can separate the pulley from the motor shaft without damaging the motor, thereby enabling existing motor shaft locking fixtures to lock the parallel shaft power steering motor.

[0006] To achieve the above objectives, this utility model provides a parallel-axis power steering motor pulley removal test fixture, comprising a base plate, a motor placement platform, a hydraulic mechanism, a jack, a clamping mechanism, and a mounting bracket. The hydraulic mechanism is mounted on the base plate, and its output end is connected to one end of the jack. The jack is mounted on the front end of the clamping mechanism, which is fixed to the base plate by the mounting bracket. The motor placement platform is slidably connected to the base plate. The parallel-axis power steering motor is placed on the motor placement platform. The rear end of the clamping mechanism clamps the pulley at the front end of the parallel-axis power steering motor, and the other end of the jack abuts against the motor shaft at the center of the pulley.

[0007] The mounting bracket has an L-shaped structure, with the vertical surface of the L-shaped structure connected to the clamping mechanism and the horizontal surface of the L-shaped structure fixed to the base plate.

[0008] The hydraulic mechanism includes a hydraulic cylinder, a lever, a pressure relief valve, and a hydraulic oil pipe. The hydraulic cylinder is equipped with a lever and a pressure relief valve. The output end of the hydraulic cylinder is connected to one end of the hydraulic oil pipe, and the other end of the hydraulic oil pipe is connected to one end of the jack.

[0009] The jack includes a screw and a push rod. The screw is threadedly connected to the clamping mechanism, and the push rod is located inside the screw, with its end abutting against the motor shaft.

[0010] The clamping mechanism includes a connecting plate, a clamping structure one, and a clamping structure two. The clamping structure one and the clamping structure two are arranged facing each other. Semi-circular grooves are provided on the contact surfaces of the clamping structure one and the clamping structure two, and a boss is provided at the rear end of the semi-circular grooves. The connecting plate is installed at the front end of the clamping structure one and the clamping structure two, and a jack is installed on the connecting plate.

[0011] The pulley is placed in a semi-circular groove, and the boss is embedded in the gap between the pulley and the parallel shaft steering motor, with the front surface of the boss abutting against the rear end of the pulley.

[0012] The connecting plate and clamping structure one, the connecting plate and clamping structure two, and clamping structure one and clamping structure two are fixed with fasteners.

[0013] The motor placement platform is equipped with a displacement indicator on its side, and a caliper is installed on the base plate below the displacement indicator.

[0014] Compared with the prior art, this utility model achieves pulley removal through the cooperation of hydraulic mechanism, jack and clamping mechanism, ensuring the stability, convenience and consistency of the removal operation, and avoiding damage to the parallel shaft steering power motor. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of a parallel-shaft steering assist motor.

[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 clamping mechanism of this utility model.

[0018] Figure 4 This is a schematic diagram of the structure of the boss of the clamping mechanism of this utility model. Detailed Implementation

[0019] The present invention will now be further described with reference to the accompanying drawings.

[0020] See Figure 2This utility model is a test fixture for removing the pulley of a parallel shaft power steering motor, including a base plate, a motor placement platform, a hydraulic mechanism, a jack, a clamping mechanism, and a mounting bracket. The hydraulic mechanism is installed on the base plate 3, and the output end of the hydraulic mechanism is connected to one end of the jack 8. The jack 8 is installed at the front end of the clamping mechanism 7, which is fixed to the base plate 3 by the mounting bracket 4. The motor placement platform 5 is slidably connected to the base plate 3. The parallel shaft power steering motor 9 is placed on the motor placement platform 5. The rear end of the clamping mechanism 7 clamps the pulley 2 at the front end of the parallel shaft power steering motor 9, and the other end of the jack 8 abuts against the motor shaft 1 in the center of the pulley 2.

[0021] The mounting bracket 4 has an L-shaped structure. The vertical surface of the L-shaped structure is connected to the clamping mechanism 7, and the horizontal surface of the L-shaped structure is fixed to the base plate 3.

[0022] The hydraulic mechanism includes a hydraulic cylinder 61, a force-applying rod 62, a pressure relief valve 63, and a hydraulic oil pipe 64. The force-applying rod 62 and the pressure relief valve 63 are mounted on the hydraulic cylinder 61 to increase or release pressure. The output end of the hydraulic cylinder 61 is connected to one end of the hydraulic oil pipe 64, and the other end of the hydraulic oil pipe 64 is connected to one end of the jack 8.

[0023] The jack 8 includes a screw and a push rod. The screw is threadedly connected to the clamping mechanism 7. The push rod is located inside the screw, and its end abuts against the motor shaft 1. The screw serves to guide and fix the push rod, ensuring that the push rod and the motor shaft 1 remain coaxial.

[0024] See Figure 3 , Figure 4 The clamping mechanism 7 includes a connecting plate 71, a clamping structure 1 72, and a clamping structure 2 73. The clamping structure 1 72 and the clamping structure 2 73 are arranged face to face. Semi-circular grooves are provided on the contact surfaces of the clamping structure 1 72 and the clamping structure 2 73 respectively. A boss 721 is provided at the rear end of the semi-circular groove. The connecting plate 71 is installed at the front end of the clamping structure 1 72 and the clamping structure 2 73. A jack 8 is installed on the connecting plate 71.

[0025] The pulley 2 is placed in a semi-circular groove, and the boss 721 is embedded in the gap between the pulley 2 and the parallel shaft steering assist motor 9, with the front surface of the boss 721 abutting against the rear end of the pulley 2.

[0026] Fasteners are used to fix the connecting plate 71 to the clamping structure 72, the connecting plate 71 to the clamping structure 73, and the clamping structure 72 to the clamping structure 73.

[0027] The side of the motor mounting platform 5 is provided with a displacement indicator 51, and a caliper 10 is installed on the base plate 3 below the displacement indicator 51 to make the displacement of the parallel shaft steering assist motor 9 visible.

[0028] In operation, the parallel-axis power steering motor 9 is placed flat on the motor mounting platform 5, and the pulley 2 at the front end of the parallel-axis power steering motor 9 is clamped by the clamping bracket 7. Then, the force-adding rod 62 is manually pressed, and the hydraulic cylinder 61 provides power to the jack 8 through the hydraulic oil pipe 64, pushing out the end of the push rod of the jack 8. The protrusion 721 of the clamping bracket 7 abuts against the rear end of the pulley 2, and the position of the clamping bracket 7 is fixed. The push rod abuts against the motor shaft 1, and the pulley 2 bears the thrust. The parallel-axis power steering motor 9 drives the motor mounting platform 5 to move backward, thereby separating the motor shaft 1 from the pulley 2.

[0029] When it is necessary to adapt to different parallel shaft power steering motors 9, the compatibility of different products can be achieved by replacing the matching motor mounting platform 5 and clamping mechanism 7.

[0030] This invention achieves pulley removal through the cooperation of a hydraulic mechanism, a jack, and a clamping mechanism, ensuring the stability, convenience, and consistency of the removal operation and avoiding damage to the parallel shaft steering assist motor.

Claims

1. A parallel-shaft type power steering motor pulley removal test fixture, comprising a base plate, a motor placement platform, a hydraulic mechanism, a jack, a clamping mechanism, and a mounting bracket, characterized in that: A hydraulic mechanism is installed on the base plate (3). The output end of the hydraulic mechanism is connected to one end of the jack (8). The jack (8) is installed at the front end of the clamping mechanism (7). The clamping mechanism (7) is fixed on the base plate (3) by the mounting bracket (4). The motor placement platform (5) is slidably connected to the base plate (3). The parallel shaft steering power motor (9) is placed on the motor placement platform (5). The rear end of the clamping mechanism (7) clamps the pulley (2) at the front end of the parallel shaft steering power motor (9). The other end of the jack (8) abuts against the motor shaft (1) in the center of the pulley (2).

2. The parallel-shaft type power steering motor pulley removal test fixture according to claim 1, characterized in that: The mounting bracket (4) is L-shaped, with the vertical surface of the L-shaped structure connected to the clamping mechanism (7) and the horizontal surface of the L-shaped structure fixed to the base plate (3).

3. The parallel-shaft type power steering motor pulley removal test fixture according to claim 1, characterized in that: The hydraulic mechanism includes a hydraulic cylinder (61), a force-applying rod (62), a pressure relief valve (63), and a hydraulic oil pipe (64). The force-applying rod (62) and the pressure relief valve (63) are installed on the hydraulic cylinder (61). The output end of the hydraulic cylinder (61) is connected to one end of the hydraulic oil pipe (64), and the other end of the hydraulic oil pipe (64) is connected to one end of the jack (8).

4. The parallel-shaft type power steering motor pulley removal test fixture according to claim 1, characterized in that: The jack (8) includes a screw and a push rod. The screw and the clamping mechanism (7) are connected by a thread. The push rod is located inside the screw and the end of the push rod abuts against the motor shaft (1).

5. The parallel-shaft type power steering motor pulley removal test fixture according to claim 1, characterized in that: The clamping mechanism (7) includes a connecting plate (71), a clamping structure one (72), and a clamping structure two (73). The clamping structure one (72) and the clamping structure two (73) are arranged face to face. The contact surfaces of the clamping structure one (72) and the clamping structure two (73) are respectively provided with semi-circular grooves. The rear end of the semi-circular groove is provided with a boss (721). The front end of the clamping structure one (72) and the clamping structure two (73) is equipped with a connecting plate (71). A jack (8) is installed on the connecting plate (71).

6. The parallel-shaft type power steering motor pulley removal test fixture according to claim 5, characterized in that: The pulley (2) is placed in a semi-circular groove, and the boss (721) is embedded in the gap between the pulley (2) and the parallel shaft steering power motor (9), and the front surface of the boss (721) abuts against the rear end of the pulley (2).

7. The parallel-shaft type power steering motor pulley removal test fixture according to claim 5, characterized in that: The connecting plate (71) is fixed to the clamping structure one (72), the connecting plate (71) is fixed to the clamping structure two (73), and the clamping structure one (72) is fixed to the clamping structure two (73) using fasteners.

8. The parallel-shaft type power steering motor pulley removal test fixture according to claim 1, characterized in that: The motor placement platform (5) is provided with a displacement indicator (51) on its side, and a caliper (10) is installed on the base plate (3) below the displacement indicator (51).

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