Noise and fluctuation detection equipment for electric power steering system

Abstract

The utility model discloses an electric power steering system noise and fluctuation detection device comprising a sound insulation structure body used for placing an electric power steering system, and the sound insulation structure body is in communication connection with an external host computer control computer; a first mounting sliding block, a second mounting sliding block and a load motor fixing block are mounted at the bottom of the interior of the sound insulation structure body, a first mounting position sensor is fixed to the left side of a load motor through a patch, and a second mounting position sensor is fixed to the upper portion of the first mounting sliding block through a patch; the first data acquisition sensor is attracted to the left side of the second mounting sliding block in a magnetic attraction patch mode, the second data acquisition sensor is attracted to a motor shell of the electric power steering system in a magnetic attraction patch mode, and the sound acquisition device is fixed to a bottom plate of the sound insulation structure. According to the utility model, accurate detection can be carried out from two aspects of motor noise and fluctuation level during delivery detection of the electric power steering system, abnormal parts can be detected in time, and outflow can be prevented.

Description

TECHNICAL FIELD

[0001] The utility model relates to a detection equipment of electric power assisted steering system, specifically a kind of for electric power assisted steering system noise and fluctuation detection equipment, belong to automobile automation test technical field. BACKGROUND

[0002] In the research and production process of electric power assisted steering system, more and more attention is paid to noise and fluctuation level, which directly affects the comfort and driving operability of customers and end users.In the electric power assisted steering system industry, improving the noise and fluctuation performance of the system is the goal that manufacturers constantly pursue.

[0003] Existing electric power assisted steering system products are mainly identified and detected by artificial recognition when leaving factory, and whether it is qualified is determined subjectively, and the judgment basis is fuzzy.The detection environment is disturbed by external noise.From the evaluation and detection standard of electric power assisted steering system noise, the existing detection method is more subjective, and there may be product missed detection and false detection.The existing detection system does not have data support for saving the detection results of equipment, and there is not enough data support for subsequent tracking of problem parts. UTILITY MODEL CONTENT

[0004] The utility model aims at the problems existing in the prior art, and provides an electric power assisted steering system noise and fluctuation detection equipment with reasonable structure and convenient use, which can accurately detect from two aspects of motor noise and fluctuation level when electric power assisted steering system is detected, detect abnormal parts in time, and prevent abnormal parts from flowing out.

[0005] In order to achieve the above purpose, the specific technical scheme of the utility model is as follows: an electric power assisted steering system noise and fluctuation detection equipment, comprising a sound insulation structure body for placing electric power assisted steering system, the sound insulation structure body is in communication connection with an external host computer control computer (14);

[0006] The inside bottom of the sound insulation structure body is provided with a mounting and fixing structure along the working direction of electric power assisted steering system, the mounting and fixing structure is arranged at the bottom of electric power assisted steering system, and comprises a first mounting sliding block (5), a second mounting sliding block (6) and a load motor fixing block (7), the first mounting sliding block and the second mounting sliding block are the same in structure, and the top of the two is provided with a through hole and an assembly hole, and is fixedly connected with electric power assisted steering system through T-shaped bolt; The top of the load motor fixing block has an arc recess, and the top is installed with load motor (9) through bolt; The load motor is provided with a coupling, and is connected and fixed with the output shaft of electric power assisted steering system through the coupling;

[0007] The first installation position sensor (8) is fixed on the left side of the load motor (9) through a patch, the second installation position sensor (10) is fixed on the top of the first installation sliding block through a patch, the first data acquisition sensor (12) is adsorbed on the left side of the second installation sliding block (6) through a magnetic adsorption patch, the second data acquisition sensor (13) is adsorbed on the motor shell of the electric power steering system through a magnetic adsorption patch, and the sound acquisition device (11) is fixed on the sound insulation structure bottom plate and is located at a position 50cm away from the front part of the electric power steering system.

[0008] Further, the sound insulation structure body comprises left mounting plates (1) and right mounting plates (3) which are vertically distributed symmetrically on two sides, and a bottom mounting plate (2) is horizontally arranged along the bottom of the two mounting plates, and the top end of the right mounting plate is rotationally connected with an openable and closable upper cover (4).

[0009] Further, a rotating shaft (14) is mounted on one side of the upper cover, a clamping block (15) is mounted on the other side of the upper cover, a side plate (16) is fixedly connected to one side of the left mounting plate, a limiting rod (17) is movably connected to the inside of the side plate, and a nut (18) is mounted on the outer wall of the limiting rod.

[0010] Further, a slide rail is further arranged above the bottom mounting plate, the first installation sliding block and the second installation sliding block can move forward and backward along the slide rail, and a sliding structure is formed.

[0011] Further, the limiting rod and the side plate form a rotating structure, and the limiting rod is provided in a T-shaped mode.

[0012] Further, the outer wall of the limiting rod is provided with threads, and the limiting rod is threadedly connected with the nut.

[0013] Compared with the prior art, the utility model has the following advantages:

[0014] 1. The external sound insulation structure mainly solves the external interference of the existing detection method on the detection result in the noisy environment of the existing production line.

[0015] 2. The installation structure of the first installation sliding block and the second installation sliding block has universality and can be adapted to the offline detection of multiple products.

[0016] 3. The upper computer determines the installation result through the first installation position sensor and the second installation position sensor, so that manual operation is saved, and the accuracy of result determination is improved compared with manual determination.

[0017] 4、Five kinds of power assist mode cover the main working condition of electric power steering system operation, the determination of the running results of five kinds of working mode, improve the comprehensiveness of the detection process;

[0018] 5、Sound acquisition device collects sound data, first data acquisition sensor collects vibration data at transmission structure, second data acquisition sensor collects vibration data at motor, the application of three data acquisition devices avoids the difference in manual judgment process;

[0019] 6、The detection of host computer for the whole detection process control and result summary comparison, improve the quality of steering system offline detection, is beneficial to the subsequent product offline detection report traceability. BRIEF DESCRIPTION OF DRAWINGS

[0020] The utility model will be further described below in combination with the drawings.

[0021] Figure 1 It is the structure schematic view of the utility model.

[0022] Figure 2 It is the top view of the utility model.

[0023] BRIEF DESCRIPTION OF DRAWINGS: 1-sound insulation structure left mounting plate, 2-sound insulation structure bottom mounting plate, 3-sound insulation structure right mounting plate, 4-sound insulation structure upper cover, 5-first installation sliding block, 6-second installation sliding block, 7-load motor fixed block, 8-first installation position sensor, 9-load motor, 10-second installation position sensor, 11-sound acquisition device, 12-first data acquisition sensor, 13-second data acquisition sensor, 14-host computer control computer. DETAILED DESCRIPTION

[0024] The electric power steering system noise and fluctuation detection equipment provided in the embodiment, the structure is as shown in Figure 1 And Figure 2 It includes sound insulation structure body for placing electric power steering system, host computer control computer 14 connected with sound insulation structure body communication.

[0025] The sound insulation structure body comprises a sound insulation structure left side mounting plate 1, a sound insulation structure bottom mounting plate 2, a sound insulation structure right side mounting plate 3 and a sound insulation structure upper cover 4. The sound insulation structure left side mounting plate and the sound insulation structure right side mounting plate are vertically and symmetrically distributed on both sides, the sound insulation structure bottom mounting plate is horizontally placed at the bottom of the two, the sound insulation structure upper cover is rotationally connected with the top end of the sound insulation structure right side mounting plate, and the other side of the sound insulation structure upper cover 4 is provided with a clamping block. One side of the sound insulation structure left side mounting plate 1 is fixedly connected with a side plate, the inside of the side plate is movably connected with a limiting rod, the outer wall of the limiting rod is provided with a nut, the sound insulation structure upper cover 4 and the sound insulation structure right side mounting plate 3 form a rotating structure through a rotating shaft 14, the clamping block is designed in a slotted manner, the limiting rod and the side plate form a rotating structure, the limiting rod is provided in a T-shaped manner, the outer wall of the limiting rod is provided with a thread, and the limiting rod is threadedly connected with the nut, so that the external noise can be conveniently isolated.

[0026] Meanwhile, a first mounting sliding block 5, a second mounting sliding block 6 and a load motor fixed block 7 are sequentially mounted on the inside of the sound insulation structure bottom mounting plate in the upper portion, and the three are arranged along the working direction of the electric power assisted steering system. The first and second mounting sliding blocks are the same in structure, and are provided with a through hole and an assembly hole on the top, and are fixedly connected with the electric power assisted steering system through T-shaped bolts. The load motor fixed block is provided with an arc-shaped recess on the top, and is mounted with a load motor 9 through bolts. The load motor is provided with a shaft coupling, and is fixedly connected with the output shaft of the electric power assisted steering system through the shaft coupling. In addition, a slide rail is further arranged on the upper portion of the sound insulation structure bottom mounting plate, and the first and second mounting sliding blocks can move back and forth along the slide rail according to the actual working condition. In the rear of the slide rail, the sound insulation structure bottom mounting plate is designed in a slotted structure, the load motor fixed block is clamped and fixed in the slot, and is arranged in parallel with the first and second mounting sliding blocks.

[0027] The first installation position sensor 8 is fixed on the left side of the load motor through a patch, the second installation position sensor 10 is fixed on the upper portion of the first mounting sliding block through a patch, the first data acquisition sensor 12 is adsorbed on the left side of the second mounting sliding block 6 in a magnetic adsorption patch mode, the second data acquisition sensor 13 is adsorbed on the motor shell of the electric power assisted steering system in a magnetic adsorption patch mode, and the sound collection device 11 is fixed on the sound insulation structure bottom plate, which is 50 cm away from the front portion of the electric power assisted steering system.

[0028] In the operation of the embodiment, the electric power assisted steering system is first installed: the positions of the first and second mounting sliding blocks are adjusted according to the actual requirements, and the installation of the electric power assisted steering system is completed. The host computer control computer detects whether the electric power assisted steering system is installed in place through the first and second installation position sensors, scans the steering system part number after installation, and closes the upper cover of the sound insulation structure to form a sealed space.

[0029] The detection of the electric power steering system, the host computer control computer is connected normally: through the host computer control computer to the electric power steering system power supply, and execute the handshake procedure to confirm the working state of the electric power steering system is normal, if the electric power steering system normal work, the host computer control computer starts the load motor output rated load, and sends the uniform speed assist mode instruction to the electric power steering system in turn, the electric power steering system carries out the assist output at rated speed, the sound acquisition device collects the sound data, the first data acquisition sensor collects the vibration data at the transmission structure, the second data acquisition sensor collects the vibration data at the motor uploads the host computer control computer to carry out data analysis and summary, extracts the peak noise value from the system noise curve data.

[0030] In addition to the above implementation, the utility model can have other implementation. Any technical scheme of equivalent replacement or equivalent transformation falls within the protection scope required by the utility model.

Claims

1. An electric power steering system noise and ripple detection apparatus, characterized by: The application relates to a sound insulation structure body for placing an electric power steering system, which is in communication connection with an external host computer control computer (14); The inside bottom of the sound insulation structure body is provided with a mounting and fixing structure along the working direction of the electric power steering system, the mounting and fixing structure is arranged at the bottom of the electric power steering system, and the mounting and fixing structure comprises a first mounting sliding block (5), a second mounting sliding block (6) and a load motor fixing block (7); the first mounting sliding block and the second mounting sliding block are the same in structure, the top of each of the first mounting sliding block and the second mounting sliding block is provided with a through hole and an assembly hole, and the first mounting sliding block and the second mounting sliding block are fixedly connected with the electric power steering system through T-shaped bolts; the top of the load motor fixing block is provided with an arc-shaped recess, and the top of the load motor fixing block is mounted with a load motor (9) through bolts; the load motor is provided with a shaft coupling, and the load motor is fixedly connected with the output shaft of the electric power steering system through the shaft coupling; The first mounting position sensor (8) is fixedly arranged on the left side of the load motor (9) through a patch, the second mounting position sensor (10) is fixedly arranged above the first mounting sliding block through a patch, the first data acquisition sensor (12) is adsorbed on the left side of the second mounting sliding block (6) through a magnetic adsorption patch, the second data acquisition sensor (13) is adsorbed on the motor shell of the electric power steering system through a magnetic adsorption patch, and the sound acquisition device (11) is fixed on the sound insulation structure bottom plate and is located at a position 50cm away from the front part of the electric power steering system.

2. The electric power steering system noise and ripple detection apparatus according to claim 1, characterized by: The sound insulation structure body comprises left mounting plates (1) and right mounting plates (3) which are symmetrically and vertically distributed, and a bottom mounting plate (2) is horizontally arranged at the bottom of the left mounting plates and the right mounting plates, and the top end of the right mounting plate is rotationally connected with an openable and closable upper cover (4).

3. An electric power assisted steering system noise and ripple detection apparatus according to claim 2, characterised in that: One side of the upper cover is provided with a rotating shaft, and the other side of the upper cover is provided with a clamping block (15); one side of the left mounting plate is fixedly connected with a side plate (16), the inside of the side plate is movably connected with a limiting rod (17), and the outer wall of the limiting rod is provided with a nut (18).

4. The electric power steering system noise and ripple detection apparatus according to claim 2, characterized by: The top of the bottom mounting plate is further provided with a sliding rail, the first mounting sliding block and the second mounting sliding block can move forward and backward along the sliding rail, and a sliding structure is formed.

5. An electric power assisted steering system noise and ripple detection apparatus according to claim 4, characterised in that: The rear of the sliding rail is designed as a slotted structure on the bottom mounting plate, the load motor fixing block is clamped and fixed in the slot, and the load motor fixing block is arranged in parallel with the first mounting sliding block and the second mounting sliding block.

6. The electric power steering system noise and ripple detection apparatus according to claim 3, characterized by: The limiting rod and the side plate form a rotating structure, and the limiting rod is arranged in a T shape.

7. An electric power assisted steering system noise and ripple detection apparatus according to claim 6, characterised in that: The outer wall of the limiting rod is provided with threads, and the limiting rod is in threaded connection with the nut.

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