Automobile full bridge air tightness test tool

Abstract

The present invention discloses an automobile full-bridge air tightness detection tool, comprising a bracket, a limiting device, a clamping device and a pressurizing device. After the limiting device arranged on the bracket performs preliminary limiting on the product, the product is clamped and fixed by clamping devices arranged on both sides of the product, and the communication between the pressurizing device and the internal chamber of the product is realized, and the air tightness detection of the product is completed by pressurizing the internal chamber of the product; the bracket comprises supporting legs and an operating platform connected to each other, and fixing seats for connection of the clamping device are respectively arranged at both ends of the operating platform; the present invention realizes fixed clamping of the product and sealing of the internal chamber of the product by arranging a clamping device and a rotating device for clamping and rotating the product on the operating platform, so as to facilitate the air tightness detection, improve the work efficiency and ensure the quality of the full bridge.

Description

Technical field:

[0002] The invention relates to the field of automobiles, and in particular to an automobile full-bridge air tightness detection tool. Background technology:

[0004] Axles are important parts of automobiles. Depending on the suspension structure, axles are divided into two types: integral and disconnected. When non-independent suspension is used, the middle part of the axle is a solid or hollow center beam, which is an integral axle (full bridge); disconnected axles are movable joint structures and are used with independent suspensions; full bridges are particularly common on trucks. They are like a huge barbell, with the body supported by the suspension system at both ends. They need to bear a certain amount of gravity and shear force, so there are strict standards for the quality of full bridges; current full bridges are generally cast in one piece. Due to the process, raw materials or other factors, bubbles or gaps will form inside the full bridge, which seriously affects the quality of the full bridge. Therefore, it is necessary to conduct airtightness testing on the full bridge to determine whether there are quality problems with the full bridge. Summary of the invention:

[0006] The technical problem to be solved by the present invention is: to overcome the shortcomings of the prior art, by arranging a clamping device and a rotating device for clamping and rotating the product on an operating platform, to achieve fixed clamping of the product and sealing of its internal cavity, thereby facilitating the air tightness detection of an automobile full-bridge air tightness detection tool.

[0007] The technical solution of the present invention is: an automobile full-bridge air tightness detection tool, comprising a bracket, a limiting device, a clamping device and a pressurizing device, wherein: after the limiting device arranged on the bracket performs preliminary limiting on the product, the clamping devices arranged on both sides of the product clamp and fix the product, and realize the communication between the pressurizing device and the internal chamber of the product, and complete the air tightness detection of the product by pressurizing the internal chamber of the product;

[0008] The bracket comprises supporting legs and an operating platform connected to each other, and fixing seats for connecting the clamping device are respectively arranged at both ends of the operating platform;

[0009] The clamping device is a clamping cylinder, which is rotatably arranged on the fixed seat through a bearing seat, and the piston rods of the two clamping cylinders are arranged opposite to each other, and a rotating frame that rotates with the two clamping cylinders is arranged between the two clamping cylinders, and the limiting device is arranged on the rotating frame to initially limit the product;

[0010] The limiting device comprises two manual limiting frames and a hydraulic positioning pin. The manual limiting frame comprises two vertical poles, one of which is hinged to one end of a cross bar, and the other end of the cross bar is fixedly connected to the other vertical pole by bolts.

[0011] Furthermore, the operating platform is provided with a cylinder flipping mechanism connected to one of the clamping cylinders.

[0012] Furthermore, the pressurizing device is a pipe with one end connected to the compressed air source, and the other end of the pipe passes through the piston rod end of the clamping cylinder, so that it moves with the piston rod and completes the connection with the internal chamber of the product.

[0013] Furthermore, the operating platform is provided with operating switches for respectively controlling the cylinder flipping mechanism, the clamping cylinder, the hydraulic positioning pin and the pipeline connected to the compressed air source.

[0014] Furthermore, a sealing ring is sleeved on the end of the piston rod of the clamping cylinder.

[0015] Furthermore, the support legs are provided with feet, and the operating platform is provided with lifting rings.

[0016] The beneficial effects of the present invention are:

[0017] 1. The present invention achieves fixed clamping of the product and sealing of its internal chamber by arranging a clamping device and a rotating device for clamping and rotating the product on the operating platform, which is convenient for testing its air tightness, improves work efficiency, and ensures the quality of the entire bridge.

[0018] 2. The limiting device of the present invention is arranged on the rotating frame to fix the product placed on the rotating frame and rotate with the rotating frame to achieve the stability of the connection between the product and the rotating frame, prevent the product from shifting during the rotation and affecting the air tightness detection, and at the same time ensure the stability of the product when the clamping device clamps the product to prevent it from shifting.

[0019] 3. The clamping cylinder of the present invention is rotatably arranged on the fixed seat through the bearing seat, and the rotating frame is connected to the clamping cylinder. Under the action of the cylinder flipping mechanism, the rotating frame and the clamping cylinder rotate together, ensuring the stability of the clamping cylinder clamping the product when the product rotates, and realizing the overall synchronous rotation of the product, the rotating frame and the clamping cylinder.

[0020] 4. One end of the pressurized pipe of the present invention is connected to the compressed air source, and the other end passes through the end of the piston rod of the clamping cylinder so that it moves along with the piston rod. When the piston rod of the clamping cylinder clamps the product, the pressurized pipe is connected to the internal chamber of the product, and the pressurization operation is performed by operating the switch.

[0021] 5. The piston rod end of the clamping cylinder of the present invention is provided with a sealing ring to achieve sealing between the end and the internal chamber of the product and ensure its sealing effect. A lifting ring is provided on the operating platform to facilitate its mobile lifting, and feet are provided on the supporting legs to facilitate its height adjustment. Description of the drawings:

[0023] Figure 1 This is a schematic diagram of the structure of the automobile full-bridge air tightness detection tooling.

[0024] Figure 2 This is a top view of the automobile full-bridge air tightness test tooling.

[0025] Figure 3 This is the right view of the automobile full-bridge air tightness test tooling.

[0026] Figure 4 for Figure 2 KK cross-sectional view.

[0027] Figure 5 for Figure 4 Schematic diagram of the structure of the middle cylinder in the relaxed state.

[0028] Figure 6 for Figure 4 A partial enlarged view of M in the figure.

[0029] Figure 7 for Figure 4 A partial enlarged view of L in the middle.

[0030] Figure 8 It is a structural schematic diagram of the hydraulic positioning pin.

[0031] Fig. 9 It is a structural schematic diagram of the movable plug.

[0032] Fig.10 It is a schematic diagram of the structure at the sealing point d. Specific implementation method:

[0034] Example: See Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 and Fig.10 In the figure, 1-support leg, 2-operating platform, 3-fixed seat, 4-clamping cylinder, 5-bearing seat, 6-piston rod, 7-rotating frame, 8-manual limit frame (vertical pole 8a, horizontal rod 8b, bolt 8c), 9-hydraulic positioning pin, 10-cylinder turning mechanism, 11-pipeline, 12-operating switch, 13-sealing ring, 14-foot, 15-lifting ring, 16-movable plug, 17-extended workpiece; A-product, B-internal chamber.

[0035] The automobile full-bridge air tightness testing tool comprises a bracket, a limiting device, a clamping device and a pressurizing device. After the limiting device arranged on the bracket performs preliminary limiting on the product, the product is clamped and fixed by the clamping devices arranged on both sides of the product, and the communication between the pressurizing device and the internal chamber of the product is realized, and the air tightness test of the product is completed by pressurizing the internal chamber of the product; the bracket comprises supporting legs and an operating platform connected to each other, and fixing seats for connecting the clamping device are respectively arranged at both ends of the operating platform; by arranging a clamping device and a rotating device for clamping and rotating the product on the operating platform, the fixed clamping of the product and the sealing of the internal chamber of the product are realized, which is convenient for testing the air tightness, improving work efficiency and ensuring the quality of the full bridge.

[0036] The present application is described in detail below with reference to the accompanying drawings and embodiments.

[0037] After the limiting device arranged on the bracket performs preliminary limiting on the product A, the clamping devices arranged on both sides of the product A clamp and fix it, and the pressurizing device is connected with the internal chamber B of the product A, and the air tightness test is completed by pressurizing the internal chamber B of the product A;

[0038] The bracket includes a supporting leg 1 and an operating platform 2 which are connected to each other, and a fixing seat 3 for connecting a clamping device is respectively provided at both ends of the operating platform 2;

[0039] The clamping device is a clamping cylinder 4, which is rotatably arranged on the fixed seat 3 through a bearing seat 5, and the piston rods 6 of the two clamping cylinders 4 are arranged opposite to each other, and a rotating frame 7 that rotates with the two clamping cylinders 4 is arranged between the two clamping cylinders 4, and the limiting device is arranged on the rotating frame 7 to perform preliminary limiting on the product;

[0040] The limiting device includes two manual limiting frames 8 and a hydraulic positioning pin 9. The manual limiting frame 8 includes two vertical rods 8a, one of which is hinged to one end of a cross bar 8b, and the other end of the cross bar 8b is fixedly connected to the other vertical rod 8a by a bolt 8c.

[0041] The operating platform 2 is provided with a cylinder flipping mechanism 10 connected to one of the clamping cylinders 4. The pressurizing device is a pipe 11 connected to the compressed air source at one end, and the other end of the pipe 11 passes through the end of the piston rod 6 of the clamping cylinder 4, so that it moves with the piston rod 6 and completes the communication with the internal chamber B of the product A.

[0042] The operating platform 2 is provided with operating switches 12 (12a, 12b, 12c, 12d) for respectively controlling the cylinder turning mechanism, the clamping cylinder, the hydraulic positioning pin and the pipeline connected with the compressed air source.

[0043] The end of the piston rod 6 of the clamping cylinder 4 is sleeved with a sealing ring 13. The support leg 1 is provided with a foot 14, and the operating platform 2 is provided with a lifting ring 15.

[0044] When in use, the first step is to place product A on the rotating frame 7, and rotate the cross bar 8b so that one end of the cross bar 8b bypasses product A and is placed on another vertical bar 8a, and is fixed by bolts 8c to complete the fixation of product A, and sealant is applied along the periphery of workpiece A (forming sealing point d). The second step is to press the operating switch 12a, and the hydraulic positioning pin 9 rises to position product A; the third step is to press the operating switch 12b, and the piston rod 6 of the clamping cylinder 4 extends, and the rubber head and sealing ring 13 at its end are pressed against the workpiece A (the end of the internal chamber B of the workpiece A, forming sealing points a and b), and the active plug 16 is used to plug the through hole in the middle of the product that is connected to the internal chamber B (a sealing ring 13 is provided between the active plug 16 and the through hole, forming sealing point c); the fourth step is to press the operating switch 12a, The hydraulic positioning pin 9 descends to release the positioning of product A; the fifth step: press the operating switch 12c to connect the pipeline 11 with the compressed air source, pressurize the internal chamber B of product A, and apply soapy water to the place where the pipeline 11 passes through the piston rod 6; the sixth step: press the operating switch 12d, the cylinder turning mechanism 10 is activated, and the workpiece A is rotated axially, and the air tightness test is performed through the indication of the pressure gauge; after completion, remove the workpiece and perform a cycle test according to the above operating steps.

[0045] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any simple modification, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. An automobile full-bridge air tightness detection tool, comprising a bracket, a limit device, a clamping device and a pressurizing device, characterized in that: After the limiting device arranged on the bracket performs preliminary limiting on the product, the product is clamped and fixed by the clamping devices arranged on both sides of the product, and the pressurizing device is connected with the internal chamber of the product, and the air tightness test is completed by pressurizing the internal chamber of the product; The bracket comprises supporting legs and an operating platform connected to each other, and fixing seats for connecting the clamping device are respectively arranged at both ends of the operating platform; The clamping device is a clamping cylinder, which is rotatably arranged on the fixed seat through a bearing seat, and the piston rods of the two clamping cylinders are arranged opposite to each other, and a rotating frame that rotates with the two clamping cylinders is arranged between the two clamping cylinders, and the limiting device is arranged on the rotating frame to initially limit the product; The limiting device includes two manual limiting frames and a hydraulic positioning pin, wherein the manual limiting frame includes two vertical poles, one of which is hinged to one end of the cross bar, and the other end of the cross bar is fixedly connected to the other vertical pole by bolts; The operating platform is provided with a cylinder turning mechanism connected to one of the clamping cylinders; The pressurizing device is a pipe with one end connected to the compressed air source, and the other end of the pipe passes through the piston rod end of the clamping cylinder, so that it moves with the piston rod and completes the connection with the internal chamber of the product.

2. The vehicle full bridge air tightness detection tool according to claim 1 is characterized by: The operating platform is provided with operating switches for respectively controlling the cylinder turning mechanism, the clamping cylinder, the hydraulic positioning pin and the pipeline to be connected with the compressed air source.

3. The vehicle full bridge air tightness detection tool according to claim 1 is characterized by: The piston rod end of the clamping cylinder is sleeved with a sealing ring.

4. The vehicle full bridge air tightness detection tool according to claim 1 is characterized by: The supporting legs are provided with feet, and the operating platform is provided with hanging rings.

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