Blasting test bench for MGU actuator

Abstract

The utility model relates to the field of parking brake actuator detection, and discloses an MGU actuator blasting testboard, which comprises a testboard surface. A cabinet body I is arranged below the test table board, a cabinet body II is arranged above the table board, and the test process is carried out in the cabinet body II; a mounting seat is arranged on the test table board and is used for positioning and mounting a to-be-tested product; the test bench is provided with an air channel, and compressed air inflates the product to be tested through the air channel for testing. An air storage tank, an air channel pipeline and a pressure control valve for controlling output airflow are arranged in the cabinet body I; compressed air generated by the air compression pump conveys pressure into the shell through the air channel pipeline; a fixing device is arranged in the second cabinet body and comprises a fixing air cylinder and a fixing claw pushed by an air cylinder piston rod, and the fixing claw is used for fixing the to-be-tested product on the installation base and enabling the to-be-tested product to be matched with the installation base in a sealed mode. The device has the advantages of reliable detection, safe and controllable process and the like.

Description

Technical Field

[0001] The utility model relates to the field of parking brake actuator detection, in particular to an MGU actuator explosion test bench. Background Art

[0002] Chinese patent application CN202211122565.8 discloses an electronic parking brake. This type of parking brake requires a separate bracket for connection to the vehicle body and takes up a large amount of space. The actuator is assembled from a housing and forms the outer portion of the actuator. The compressive strength of the housing is a key parameter of the actuator. Existing strength tests generally use computer simulations, making it difficult to collect actual blasting data, making it difficult to compile and summarize. Utility Model Content

[0003] The utility model aims to solve the shortcomings of the prior art and provides a MGU actuator explosion test bench.

[0004] In order to solve the above technical problems, the present invention is solved by the following technical solutions:

[0005] An MGU actuator blasting test bench includes a test bench; a first cabinet is provided below the test bench, and a second cabinet is provided above the test bench. The test process is performed in the second cabinet.

[0006] The test bench is provided with a mounting seat for positioning and mounting the product to be tested; the test bench is provided with an air passage, through which compressed air is inflated into the product to be tested for testing;

[0007] The cabinet is equipped with an air storage tank, an air pipeline and a pressure control valve for controlling the output air flow. The compressed air generated by the air compression pump is conveyed to the shell through the air pipeline under pressure;

[0008] A fixing device is provided in the second cabinet, which includes a fixing cylinder and a fixing claw pushed by the cylinder piston rod. The fixing claw is used to fix the product to be tested on the mounting seat and to seal the product to be tested and the mounting seat.

[0009] Preferably, cabinet body 2 is surrounded by a protective plate, and sound-absorbing cotton is provided on the inner side of the protective plate, wherein the front end of cabinet body 2 is a sealed door structure, and the sealed door includes a fixed door in the upper part and a sliding door in the lower part, and the sliding door slides up and down, and the sliding door is pushed by a pushing cylinder.

[0010] Preferably, the four corners of cabinet body 2 are vertically provided with columns, and protective plates and sound-absorbing cotton are installed on the columns. It also includes a vertically arranged slide rail slider, and the sliding door slides on the slide rail by being fixed on the slider.

[0011] Preferably, a high-speed camera for capturing the explosion process is provided in the second cabinet, a protective cover is provided on the outside of the high-speed camera, the high-speed camera is located on one side of the test table, and the lens focuses on the position of the shell of the product to be tested.

[0012] Preferably, it also includes a controller, a pushing cylinder, a high-speed camera and a pressure control valve. A pressure sensor for detecting air pressure is provided on the mounting seat, and the pressure sensor is connected to the controller.

[0013] Preferably, the device further comprises a control switch for controlling the opening and closing of the sliding door.

[0014] Preferably, the fixing claw includes a pressing block and positioning posts on both sides of the pressing block, and the positioning posts are used to be inserted into the mounting holes of the product to be tested.

[0015] Preferably, the fixing seat includes a circular table that cooperates with the product to be tested, and a sealing ring groove for assembling the sealing ring is provided on the edge of the circular table. The product to be tested is placed on the circular table and sealed by the sealing ring. Positioning protrusions are provided on both sides of the circular table, and the positioning protrusions are used to position and cooperate with the mounting holes.

[0016] This solution offers the following advantages over existing technologies: Through the design of the blasting platform, it enables blasting tests to be conducted safely and collects blasting data in real time. This allows for the shell bearing pressure to be determined during blasting. High-speed cameras can also capture the initial rupture location at the moment of blasting, providing guidance for subsequent design. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the overall structure of the device.

[0018] Figure 2 A schematic diagram of the overall structure of the device.

[0019] Figure 3 Schematic diagram of the structure of the mounting base.

[0020] The technical names of the figures are: 1-test table, 2-cabinet one, 3-cabinet two, 4-mounting seat, 5-air duct, 6-fixed cylinder, 7-fixed claw, 8-protective plate, 9-silence cotton, 10-fixed door, 11-sliding door, 12-column, 13-slide rail, 14-high-speed camera, 15-protective cover, 16-controller, 17-pushing cylinder, 18-control switch, 19-round table, 20-sealing ring groove, 21-positioning protrusion. DETAILED DESCRIPTION

[0021] The present invention is described in further detail below with reference to the accompanying drawings and embodiments.

[0022] An MGU actuator blasting test bench includes a test bench 1; a cabinet 1 2 is provided below the test bench 1, and a cabinet 2 3 is provided above the bench. The test process is performed in the cabinet 2 3.

[0023] The test table 1 is provided with a mounting base 4 for positioning and mounting the product to be tested; the test table is provided with an air passage 5, through which compressed air is inflated into the product to be tested for testing;

[0024] Cabinet 1 2 is equipped with an air storage tank, an air pipeline and a pressure control valve for controlling the output air flow. The compressed air generated by the air compression pump is conveyed to the shell through the air pipeline under pressure.

[0025] Cabinet 2 (3) houses a fixture comprising a fixed cylinder (6) and a fixed claw (7) driven by the cylinder's piston rod. This claw (7) secures the product under test on the mounting base (4), ensuring a tight seal between the product and the mounting base. This test bench is designed to assess the pressure-bearing capacity of batches of products and conduct pressure burst tests through spot checks. In this solution, Cabinet 1 (2) provides the power source for the burst tests, while Cabinet 2 (3) provides the test chamber.

[0026] In this embodiment, cabinet 2 3 is surrounded by a protective plate 8, the inner side of which is provided with sound-absorbing cotton 9. The front end of cabinet 2 3 is a sealed door structure, which includes a fixed door 10 in the upper half and a sliding door 11 in the lower half. The sliding door 11 slides up and down and is driven by a push cylinder 17. Because the shell will explode on all sides during the explosion process, the protective plate 8 provides protection. At the same time, the explosion is noisy, so this solution also adds a layer of sound-absorbing cotton structure to absorb the noise.

[0027] The four corners of the cabinet body 2 3 are vertically provided with columns 12, and the protective plate 8 and the sound-absorbing cotton 9 are installed on the columns 12. The cabinet body 2 also includes a vertically arranged slide rail 13 slider, and the sliding door 11 slides on the slide rail 13 by being fixed on the slider. The columns 12 are made of aluminum profiles, which have the advantages of uniform style and easy installation.

[0028] In this solution, a high-speed camera 14 is installed within cabinet 2 (3) to capture the explosion process. A protective cover 15 is provided on the exterior of camera 14. Camera 14 is located on one side of test table 1, with its lens focused on the product housing under test. High-speed camera 14 can capture the instantaneous explosion and the pressure at that moment. A processor can then collect both the product image and the explosion pressure.

[0029] This embodiment also includes a controller 16, which is connected to a propulsion cylinder 17, a high-speed camera 14, and a pressure control valve. A pressure sensor for detecting air pressure is provided on the mounting base 4 and is connected to the controller 16. The controller 16 is a PLC controller 16 having a storage unit for storing product information. The product is provided with a radio frequency code, which is used to collect product data and input product detection data.

[0030] The control switch 18 for controlling the opening and closing of the sliding door 11 is also included. The control switch 18 is located outside the cabinet.

[0031] Preferably, the fixing claw 7 includes a pressing block and positioning posts on both sides of the pressing block, and the positioning posts are used to be inserted into the mounting holes of the product to be tested.

[0032] The mounting base includes a truncated platform 19 that mates with the product under test. A sealing ring groove 20 is provided on the edge of the platform 19 for mounting the sealing ring. The product under test is placed on the platform 19 and sealed by the sealing ring. Positioning protrusions 21 are provided on both sides of the platform 19, which are designed to align with the mounting holes. The positioning of the positioning protrusions 21 with the mounting holes ensures the stability of the product and prevents shaking. Furthermore, the positioning of the product under test ensures a reliable seal, preventing air leakage during subsequent blast pressure testing.

[0033] The working process of this program is as follows:

[0034] First, the product is installed on the mounting base 4, and then the fixing device is moved down to position and fix the product, the air supply part is opened, and the compressed air enters the shell chamber with the product through the air pipeline; then the pressure is controlled by controlling the input gas pressure, and the pressure sensor on the mounting base 4 performs pressure detection. The controller 16 collects the pressure value in real time and records it. When the explosion is detected, the current pressure value is read as the explosion pressure of the product.

[0035] The above description of the disclosed embodiments will enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An MGU actuator explosion test bench, characterized by: The test table (1) comprises a first cabinet (2) provided below the test table (1), a second cabinet (3) provided above the table, and the test process is carried out in the second cabinet (3); The test table (1) is provided with a mounting seat (4), which is used to position and mount the product to be tested; the test table is provided with an air passage (5), through which compressed air is inflated into the product to be tested for testing; The cabinet body 1 (2) is provided with an air storage tank, an air pipeline and a pressure control valve for controlling the output air flow, and the compressed air generated by the air compression pump is conveyed to the housing through the air pipeline under pressure; A fixing device is provided in the second cabinet (3), and the fixing device comprises a fixing cylinder (6) and a fixing claw (7) pushed by the cylinder piston rod. The fixing claw (7) is used to fix the product to be tested on the mounting seat (4) and to seal the product to be tested and the mounting seat (4).

2. The MGU actuator explosion test bench according to claim 1, characterized in that: The second cabinet body (3) is surrounded by a protective plate (8), and a sound-absorbing cotton (9) is arranged on the inner side of the protective plate (8). The front end of the second cabinet body (3) is a sealed door structure, and the sealed door includes a fixed door (10) in the upper part and a sliding door (11) in the lower part. The sliding door (11) slides up and down, and is pushed by a pushing cylinder (17).

3. The MGU actuator explosion test bench according to claim 2, characterized in that: The four corners of the second cabinet (3) are vertically provided with columns (12), and the protective plate (8) and the sound-absorbing cotton (9) are installed on the columns (12). The cabinet also includes a slide rail (13) and a slider arranged in a vertical direction. The sliding door (11) is fixed on the slider to achieve sliding on the slide rail (13).

4. The MGU actuator explosion test bench according to claim 2, characterized in that: A high-speed camera (14) for capturing the explosion process is provided in the second cabinet (3), a protective cover (15) is provided outside the high-speed camera (14), and the high-speed camera (14) is located on one side of the test table (1), with the lens focusing on the position of the shell of the product to be tested.

5. The MGU actuator explosion test bench according to claim 4, characterized in that: The device also includes a controller (16), a push cylinder (17), a high-speed camera (14) and a pressure control valve. A pressure sensor for detecting air pressure is provided on the mounting seat (4), and the pressure sensor is connected to the controller (16).

6. The MGU actuator explosion test bench according to claim 5, characterized in that: It also includes a control switch (18) for controlling the opening and closing of the sliding door (11).

7. The MGU actuator explosion test bench according to claim 5, characterized in that: The fixing claw (7) comprises a pressing block and positioning columns on both sides of the pressing block, and the positioning columns are used for being inserted into the mounting holes of the product to be tested.

8. The MGU actuator explosion test bench according to claim 5, characterized in that: The fixing seat includes a truncated table (19) matched with the product to be tested, a sealing ring groove (20) for assembling a sealing ring is provided on the edge of the truncated table (19), the product to be tested is placed on the truncated table (19) and is sealed by the sealing ring, and positioning protrusions (21) are provided on both sides of the truncated table (19), and the positioning protrusions (21) are used to position and match with the mounting holes.

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