Wheel speed line airtightness detection equipment

Abstract

The utility model discloses wheel speed line airtightness detection equipment, and belongs to the technical field of wheel speed line detection. The device mainly comprises a detection table and a detection part mounted on the top surface of the detection table, the airtight jig lower die is fixedly installed on a moving assembly of the inspection part, an embedding groove is formed in the top face of the airtight jig lower die in a circle, a sealing ring is installed in the embedding groove in an embedded mode, the top of the sealing ring is higher than the upper surface of the airtight jig lower die, and a cavity for installing a wheel speed line is formed in the position, located in the sealing ring, of the top face of the airtight jig lower die. The lifting part is mounted on the top surface of the detection table in a crossing manner; the airtight jig upper die is fixedly installed on a sliding component of the lifting component, a wheel speed line is placed in a cavity of the airtight jig lower die, after the airtight jig upper die and the airtight jig lower die are closed, a sealed space is formed through the sealing ring, air is inflated into the air cavity through the air inlet nozzle, air enters the sealed space through the air outlet hole, and the airtight jig upper die and the airtight jig lower die are sealed. Therefore, the overall airtightness detection of the wire harness including the sleeve structure is realized.

Description

Technical Field

[0001] This application relates to the field of wheel speed line detection technology, specifically a wheel speed line airtightness detection device. Background Technology

[0002] As a chassis wiring harness, wheel speed harnesses face complex operating conditions under vehicle conditions, such as water immersion, large dynamic travel, and extreme cold in winter. With the development of automotive intelligence, wheel speed harness designs require more and more circuits. To ensure high dynamic bending performance, the industry generally adopts a sleeve solution. However, due to the characteristics of the inner wall space of the sleeve, if the airtightness fails and water gets in, it is prone to freezing in extremely cold weather, reducing the flexibility of the wiring harness and thus affecting its dynamic bending performance and lifespan. Therefore, it is necessary to test the effectiveness of the airtightness of the sleeve after wheel speed harness processing.

[0003] However, existing methods for airtightness testing of wheel speed cables only test the connector end. The primary function of the wheel speed cable sleeve is to protect the internal wiring harness. During vehicle operation, the wheel speed cable must withstand complex conditions such as water accumulation, large dynamic travel, and extreme cold in winter. If the sleeve's airtightness is poor, moisture can easily seep in. In extremely cold environments, the seeping water freezes, and the expansion of the ice compresses the wiring harness, reducing its flexibility. This reduced flexibility severely affects its dynamic bending performance, making the wiring harness more susceptible to damage during frequent wheel movements, thus reducing the overall lifespan of the wiring harness and ultimately impacting its signal transmission performance, threatening vehicle safety and stability. Most testing methods only target the connector end and cannot comprehensively test the airtightness of the entire wiring harness, especially the sleeve structure. This makes it difficult to detect airtightness issues in the sleeve section in a timely manner, creating potential risks for the safe operation of vehicles under complex conditions.

[0004] Therefore, it is necessary to provide a wheel speed line airtightness testing device to solve the above problems.

[0005] It should be noted that the information disclosed in this background section is only for understanding the background technology of this application concept, and therefore may include information that does not constitute prior art. Utility Model Content

[0006] The purpose of this invention is to provide a wheel speed line air tightness testing device to solve the problems mentioned in the background art.

[0007] The technical solution adopted by this application to solve its technical problem is:

[0008] A wheel speed line air tightness testing device includes a testing platform and a testing component installed on the top surface of the testing platform;

[0009] The lower mold of the airtight fixture is fixedly installed on the moving component of the inspection component. An embedding groove is formed around the top surface of the lower mold of the airtight fixture. A sealing ring is embedded in the embedding groove. The top of the sealing ring is higher than the upper surface of the lower mold of the airtight fixture. A cavity for installing the wheel speed line is formed on the top surface of the lower mold of the airtight fixture located in the sealing ring.

[0010] A lifting component, which is mounted across the top surface of the testing platform;

[0011] An airtight fixture upper mold is fixedly installed on the sliding component of the lifting component. A pressure groove is formed around the top surface of the airtight fixture upper mold, and an air outlet is formed on the bottom surface of the airtight fixture upper mold located inside the pressure groove. An air cavity is formed inside the airtight fixture upper mold, and an air inlet is installed on the side wall of the airtight fixture upper mold. The air inlet is connected to the air outlet through the air cavity, and the air inlet is connected to the inflation component through an air pipe.

[0012] Preferably, the lower mold of the airtight fixture has a first guide hole and a first guide post at each of the four corners of its top surface, and the upper mold of the airtight fixture has a second guide hole and a second guide post at each of the four corners of its bottom surface.

[0013] When the mold is closed, the first guide post is inserted into the interior of the second guide hole, and the second guide post is inserted into the interior of the first guide hole.

[0014] Preferably, the inspection component includes a driving component, which includes a drive motor, a lead screw, and a bearing housing. The drive motor is fixedly installed on one side of the top surface of the inspection table. The output shaft of the drive motor is fixedly installed on one end of the lead screw, and the other end of the lead screw is fixedly installed on the inner ring of the bearing housing. The bearing housing and the drive motor are symmetrically installed on the other side of the top surface of the inspection table.

[0015] The moving component includes an internal thread seat and a slide. The internal thread seat is threadedly connected to the side wall of the lead screw. Guide rails are fixedly installed on both sides of the top surface of the testing table. The slide is slidably connected on the guide rails. The top surfaces of the internal thread seat and the slide are fixedly installed to the bottom surface of the lower mold of the airtight fixture.

[0016] Preferably, a limiting component is fixedly installed on the top surface of the testing platform near the drive motor. The limiting component includes a second mounting plate and a limit switch. The second mounting plate is fixedly installed on the top surface of the testing platform, and the limit switch is installed on the side wall of the second mounting plate.

[0017] Preferably, the lifting component includes a support component, which includes a rod seat, a slide rod, and a top plate. The bottom end of the slide rod is fixedly installed on the top surface of the testing platform through the rod seat, and the four corners of the bottom surface of the top plate are fixedly installed to the top end of the slide rod.

[0018] The sliding component includes a sleeve, a lifting plate, and a cylinder. The sleeve is respectively sleeved on the side wall of the slide rod, and the top surface of the sleeve is fixedly installed on both sides of the lifting plate. The center of the top surface of the lifting plate is fixedly installed with the telescopic shaft of the cylinder. The cylinder is fixedly installed on the top surface of the top plate, and the bottom surface of the lifting plate is fixedly installed with the upper mold of the airtight fixture.

[0019] Preferably, the inflation component includes a first mounting plate and an inflation device. The first mounting plate is respectively installed on both sides of the top surface of the testing platform, and the inflation device is fixedly installed on the side wall of the first mounting plate.

[0020] The beneficial effects of this application are:

[0021] 1. The technical solution of this application, through a unique design, places the wheel speed line in the cavity of the lower mold of the airtight fixture. After the upper mold and the lower mold of the airtight fixture are closed, a sealed space is formed by the sealing ring, and air is injected into the air cavity through the air inlet. The gas enters the sealed space through the air outlet, realizing the overall airtightness test of the wire harness, including the sleeve structure, and filling the industry testing gap.

[0022] 2. During the testing process, the lower and upper molds of the airtight fixture are connected by the interlocking of the first guide post and the second guide hole, and the second guide post and the first guide hole, ensuring precise alignment of the molds and avoiding poor sealing due to mold misalignment, which would affect the test results. At the same time, the stable operation of the moving components and lifting components of the test parts ensures the stability of the testing process, effectively improving the accuracy of the airtightness test of the wheel speed line sleeve structure, and providing a reliable basis for ensuring the performance of the wheel speed line under complex working conditions.

[0023] In addition to the purposes, features, and advantages described above, this application has other purposes, features, and advantages. A further detailed description of this application will be provided below with reference to the figures. Attached Figure Description

[0024] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute an undue limitation of this application.

[0025] In the attached diagram:

[0026] Figure 1 This is an overall schematic diagram of a wheel speed line airtightness testing device according to the present invention;

[0027] Figure 2 This is a schematic diagram of the structure of the inspection component, the inflation component, and the limiting component of this utility model;

[0028] Figure 3 This is a schematic diagram of the lower mold structure of the airtight fixture of this utility model;

[0029] Figure 4 This is a schematic diagram of the lifting component and the upper mold structure of the airtight fixture of this utility model.

[0030] The following are the labeling elements in the figure:

[0031] 1. Testing station;

[0032] 2. Components to be inspected; 21. Drive motor; 22. Lead screw; 23. Internal thread seat; 24. Bearing seat; 25. Guide rail; 26. Slide;

[0033] 3. Lower mold of airtight fixture; 31. First guide hole; 32. First guide post; 33. Sealing ring; 34. Cavity;

[0034] 4. Lifting components; 41. Rod seat; 42. Slide rod; 43. Sleeve seat; 44. Lifting plate; 45. Top plate; 46. Cylinder;

[0035] 5. Upper mold of airtight fixture; 51. Second guide post; 52. Second guide hole; 53. Pressure groove; 54. Air outlet; 55. Air inlet;

[0036] 6. Inflatable component; 61. First mounting plate; 62. Inflatable device;

[0037] 7. Limiting component; 71. Second mounting plate; 72. Limit switch. Detailed Implementation

[0038] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0039] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present application.

[0040] Please see Figure 1-4 The embodiments provided by this utility model are as follows:

[0041] like Figure 1As shown, a wheel speed line air tightness testing device includes a testing platform 1 and a testing component 2 installed on the top surface of the testing platform 1;

[0042] The lower mold 3 of the airtight fixture is fixedly installed on the moving component of the inspection component 2. The moving component of the inspection component 2 moves the lower mold 3 of the airtight fixture to a designated position, providing a movable installation base for the airtightness test of the wheel speed line, making it convenient to send the wheel speed line into the test area.

[0043] like Figure 3 As shown, an embedding groove is provided around the top surface of the lower mold 3 of the airtight fixture, and a sealing ring 33 is embedded in the embedding groove. The top of the sealing ring 33 is higher than the upper surface of the lower mold 3 of the airtight fixture. A cavity 34 for the installation of the wheel speed line is provided on the top surface of the lower mold 3 of the airtight fixture located in the sealing ring 33.

[0044] The upper mold 5 of the airtight fixture is fixedly installed on the sliding part of the lifting component 4. The lifting component 4 presses down the upper mold 5 of the airtight fixture to perform mold closing or mold opening movement with the lower mold 3 of the airtight fixture below. A pressure groove 53 is formed around the top surface of the upper mold 5 of the airtight fixture. An air outlet 54 is formed on the bottom surface of the upper mold 5 of the airtight fixture located inside the pressure groove 53. An air cavity is formed inside the upper mold 5 of the airtight fixture. An air inlet 55 is installed on the side wall of the upper mold 5 of the airtight fixture. The air inlet 55 is connected to the air outlet 54 through the air cavity. The air inlet 55 is connected to the inflation component 6 through an air pipe.

[0045] After the wheel speed line is installed in the cavity 34, the upper mold 5 of the airtight fixture is pressed down. When the upper mold 5 and the lower mold of the airtight fixture are closed, the sealing ring 33 fills the gap between them. In addition, the pressure groove 53 on the upper mold 5 of the airtight fixture presses on the top surface of the sealing ring 33. The sealing ring 33 ensures the airtightness of the test space so that a sealed space is formed inside. Air is injected into the air cavity through the air inlet 55. The gas enters the sealed space through the air outlet 54 from the air cavity to test the airtightness of the wheel speed line.

[0046] Among them, such as Figure 3 and Figure 4 As shown, the lower mold 3 of the airtight fixture has a first guide hole 31 and a first guide post 32 installed at the four corners of its top surface. The upper mold 5 of the airtight fixture has a second guide hole 52 and a second guide post 51 at the four corners of its bottom surface. When the mold is closed, the first guide post 32 is inserted into the interior of the second guide hole 52, and the second guide post 51 is inserted into the interior of the first guide hole 31. During the mold closing process, the first guide post 32 of the lower mold 3 of the airtight fixture is inserted into the second guide hole 52 of the upper mold 5 of the airtight fixture, and at the same time, the second guide post 51 of the upper mold 5 of the airtight fixture is inserted into the first guide hole 31 of the lower mold 3 of the airtight fixture, guiding the upper and lower molds to accurately align, ensuring that the upper mold 5 and the lower mold of the airtight fixture can be precisely aligned when the mold is closed, avoiding poor sealing or damage to the mold due to misalignment, and improving the accuracy of testing and the reliability of the equipment.

[0047] The specific method for raising and lowering the upper mold 5 of the airtight fixture is as follows:

[0048] like Figure 4 As shown, the lifting component 4 is installed across the top surface of the testing platform 1. The lifting component 4 includes a support component, which includes a rod seat 41, a slide rod 42 and a top plate 45. The bottom end of the slide rod 42 is fixedly installed on the top surface of the testing platform 1 through the rod seat 41. The four corners of the bottom surface of the top plate 45 are fixedly installed with the top end of the slide rod 42.

[0049] The sliding component includes a sleeve 43, a lifting plate 44, and a cylinder 46. The sleeve 43 is respectively sleeved on the side wall of the slide rod 42, and the top surface of the sleeve 43 is fixedly installed on both sides of the lifting plate 44. The center of the top surface of the lifting plate 44 is fixedly installed with the telescopic shaft of the cylinder 46. The cylinder 46 is fixedly installed on the top surface of the top plate 45. The bottom surface of the lifting plate 44 is fixedly installed with the upper mold 5 of the airtight fixture. When the cylinder 46 is working, its telescopic shaft drives the lifting plate 44 to move up and down. The lifting plate 44 slides on the slide rod 42 through the sleeve 43, thereby driving the upper mold 5 of the airtight fixture fixed on the bottom surface of the lifting plate 44 to move up and down, realizing the mold closing and opening action, providing the lifting power of the upper mold 5 of the airtight fixture, controlling the mold closing and opening process, and ensuring that the inspection process can proceed smoothly.

[0050] The inflation component 6 includes a first mounting plate 61 and an inflation device 62. The first mounting plate 61 is installed on both sides of the top surface of the test bench 1. The inflation device 62 is fixedly installed on the side wall of the first mounting plate 61. The inflation device 62 is connected to the air inlet 55 through an air pipe to fill the air cavity of the upper mold 5 of the airtight fixture with gas, providing the required gas source for airtightness testing and ensuring that there is enough pressure of gas injected into the sealed space during the testing process to test the airtightness of the wheel speed line.

[0051] Among them, such as Figure 2 As shown, the specific method for moving the lower mold 3 of the airtight fixture to the detection area is as follows:

[0052] The inspection component 2 includes a drive component, which includes a drive motor 21, a lead screw 22, and a bearing housing 24. The drive motor 21 is fixedly installed on one side of the top surface of the inspection table 1. The output shaft of the drive motor 21 is fixedly installed at one end of the lead screw 22, and the other end of the lead screw 22 is fixedly installed in the inner ring of the bearing housing 24. The bearing housing 24 and the drive motor 21 are symmetrically installed on the other side of the top surface of the inspection table 1.

[0053] The moving assembly includes an internal thread seat 23 and a slide 26. The interior of the internal thread seat 23 is threadedly connected to the side wall of the lead screw 22. Guide rails 25 are fixedly installed on both sides of the top surface of the testing table 1. The slide 26 is slidably connected on the guide rails 25. The top surfaces of the internal thread seat 23 and the slide 26 are fixedly installed on the bottom surface of the lower mold 3 of the airtight fixture.

[0054] When the drive motor 21 works, its output shaft drives the lead screw 22 to rotate. The internal thread seat 23 moves on the lead screw 22 as the lead screw 22 rotates. At the same time, the slide 26 slides on the guide rail 25, thereby driving the lower mold 3 of the airtight fixture and the wheel speed line to move, realizing the automatic movement of the lower mold 3 of the airtight fixture and the wheel speed line, which facilitates sending the wheel speed line into the detection position and sending it out after the detection is completed.

[0055] Furthermore, a limiting component 7 is fixedly installed on the top surface of the testing table 1 near the drive motor 21. The limiting component 7 includes a second mounting plate 71 and a limit switch 72. The second mounting plate 71 is fixedly installed on the top surface of the testing table 1, and the limit switch 72 is installed on the side wall of the second mounting plate 71. When the lower mold 3 of the airtight fixture moves to the extreme position near the drive motor 21, it touches the limit switch 72. The limit switch 72 sends a signal to the control system to control the drive motor 21 to stop working, preventing the lower mold 3 of the airtight fixture from moving excessively, thus protecting the equipment and ensuring the safety and stability of the equipment operation.

[0056] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A wheel speed line airtightness testing device, characterized in that: It includes a testing station (1) and a testing component (2) installed on the top surface of the testing station (1); The lower mold (3) of the airtight fixture is fixedly installed on the moving component of the inspection component (2). An embedding groove is provided around the top surface of the lower mold (3). A sealing ring (33) is embedded in the embedding groove. The top of the sealing ring (33) is higher than the upper surface of the lower mold (3). A cavity (34) for installing the wheel speed line is provided on the top surface of the lower mold (3) located in the sealing ring (33). A lifting component (4) is mounted across the top surface of the testing platform (1); An airtight fixture upper mold (5) is fixedly installed on the sliding component of the lifting component (4). A pressure groove (53) is provided around the top surface of the airtight fixture upper mold (5). An air outlet (54) is provided on the bottom surface of the airtight fixture upper mold (5) located inside the pressure groove (53). An air cavity is provided inside the airtight fixture upper mold (5). An air inlet (55) is installed on the side wall of the airtight fixture upper mold (5). The air inlet (55) is connected to the air outlet (54) through the air cavity. The air inlet (55) is connected to the inflation component (6) through an air pipe.

2. The wheel speed line air tightness testing device according to claim 1, characterized in that: The lower mold (3) of the airtight fixture has a first guide hole (31) and a first guide post (32) respectively opened at the four corners of the top surface. The upper mold (5) of the airtight fixture has a second guide hole (52) and a second guide post (51) respectively opened at the four corners of the bottom surface. When the mold is closed, the first guide post (32) is inserted into the interior of the second guide hole (52), and the second guide post (51) is inserted into the interior of the first guide hole (31).

3. The wheel speed line airtightness testing device according to claim 1, characterized in that: The inspection component (2) includes a drive component, which includes a drive motor (21), a lead screw (22), and a bearing seat (24). The drive motor (21) is fixedly installed on one side of the top surface of the inspection table (1). The output shaft of the drive motor (21) is fixedly installed at one end of the lead screw (22). The other end of the lead screw (22) is fixedly installed in the inner ring of the bearing seat (24). The bearing seat (24) and the drive motor (21) are symmetrically installed on the other side of the top surface of the inspection table (1). The moving component includes an internal thread seat (23) and a slide (26). The interior of the internal thread seat (23) is threadedly connected to the side wall of the lead screw (22). Guide rails (25) are fixedly installed on both sides of the top surface of the testing table (1). The slides (26) are slidably connected on the guide rails (25). The top surfaces of the internal thread seat (23) and the slides (26) are fixedly installed on the bottom surface of the lower mold (3) of the airtight fixture.

4. The wheel speed line air tightness testing device according to claim 3, characterized in that: A limiting component (7) is fixedly installed on the top surface of the testing platform (1) near the drive motor (21). The limiting component (7) includes a second mounting plate (71) and a limit switch (72). The second mounting plate (71) is fixedly installed on the top surface of the testing platform (1), and the limit switch (72) is installed on the side wall of the second mounting plate (71).

5. The wheel speed line air tightness testing device according to claim 1, characterized in that: The lifting component (4) includes a support component, which includes a rod seat (41), a slide rod (42) and a top plate (45). The bottom end of the slide rod (42) is fixedly installed on the top surface of the testing table (1) through the rod seat (41). The four corners of the bottom surface of the top plate (45) are fixedly installed with the top end of the slide rod (42). The sliding component includes a sleeve (43), a lifting plate (44), and a cylinder (46). The sleeve (43) is respectively sleeved on the side wall of the slide rod (42), and the top surface of the sleeve (43) is respectively fixedly installed on both sides of the lifting plate (44). The center of the top surface of the lifting plate (44) is fixedly installed with the telescopic shaft of the cylinder (46). The cylinder (46) is fixedly installed on the top surface of the top plate (45). The bottom surface of the lifting plate (44) is fixedly installed with the upper mold (5) of the airtight fixture.

6. The wheel speed line air tightness testing device according to claim 5, characterized in that: The inflation component (6) includes a first mounting plate (61) and an inflation device (62). The first mounting plate (61) is installed on both sides of the top surface of the testing platform (1), and the inflation device (62) is fixedly installed on the side wall of the first mounting plate (61).

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