Universal wheel cylinder airtightness test fixture

Abstract

The utility model provides a universal wheel cylinder airtightness test fixture, which comprises a bottom plate, a supporting middle plate arranged on the bottom plate, a supporting seat, a limiting device and two groups of sealing devices, and is characterized in that the supporting seat is used for supporting a brake wheel cylinder, is arranged on the supporting middle plate and is adjustably connected with the supporting middle plate along the vertical direction; the limiting device is arranged on the bottom plate or the supporting middle plate and used for abutting against the side wall of the brake cylinder. The two assembling and sealing devices are arranged on the bottom plate and used for pressing the leather sheath into the cylinder body of the wheel cylinder and sealing the leather sheath. According to the utility model, through the arrangement of the assembling and sealing device, not only can the assembly of the leather sheath be realized, but also the sealing during the air tightness test can be ensured, and the adjustable supporting seat is arranged so as to adapt to wheel cylinders with different specifications, so that the assembling and testing efficiency is improved, the working intensity of workers is reduced, and the working efficiency is improved. And the universality of the airtightness test fixture can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sub-pump detection jigs, in particular to a universal sub-pump airtightness test jig. Background Art

[0002] Currently on the market, when assembling the leather cover with a frame, the only way to assemble the wheel cylinder on the market is to knock it in with a rubber hammer, or use an ordinary cover jig to press one side of the leather cover for assembly. After assembly, the wheel cylinder needs to be tested for air tightness. The whole process is not only time-consuming but also labor-intensive. Although there are some jigs for assembly and testing, they have poor versatility and are difficult to adapt to the assembly and testing of brake wheel cylinders of different specifications.

[0003] In view of this, the inventor specially designed a universal sub-pump airtightness test fixture, and this case was thus generated. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the utility model is to propose a universal sub-pump airtightness test fixture, which can not only realize the assembly of the leather case but also ensure the sealing during the airtightness test by setting an assembly sealing device, greatly improving the efficiency. Furthermore, an adjustable support seat is set to adapt to sub-pumps of different specifications, overcoming the problems of time-consuming, labor-intensive, and poor universality.

[0005] According to the utility model, a universal sub-pump airtightness test fixture is provided, comprising a bottom plate, a supporting middle plate arranged on the bottom plate, and further comprising:

[0006] A support seat, the support seat is used to support the brake cylinder, the support seat is arranged on the support middle plate and is adjustably connected to the support middle plate along the vertical direction;

[0007] A limiting device, the limiting device is arranged on the bottom plate or the supporting middle plate and is used to abut against the side wall of the brake cylinder;

[0008] Two assembly sealing devices are arranged on the bottom plate and located on both sides of the supporting middle plate. The assembly sealing devices are used to press the leather cover into the slave cylinder body and seal it.

[0009] The airtight test fixture of the utility model can not only realize the assembly of the holster but also ensure the sealing during the airtight test by providing an assembly sealing device. Furthermore, an adjustable support seat is provided to facilitate adapting to sub-pumps of different specifications, which not only improves the efficiency of assembly and testing and reduces the work intensity of workers, but also improves the versatility of the airtight test fixture.

[0010] In some embodiments of the utility model, it also includes an airtightness testing device, a lifting cylinder arranged on one side of the airtightness testing device, a mounting plate arranged at the output end of the lifting cylinder, and a sealing head arranged below the mounting plate. The sealing head is connected to the airtightness testing device through an output pipe, and an air passage is arranged inside the sealing head.

[0011] In some embodiments of the utility model, the support seat includes support blocks arranged on both sides of the support middle plate, a connecting rod for connecting the two support blocks, and a positioning column arranged on the lower end surface of the connecting rod, and a positioning hole for cooperating with the positioning column is arranged on the support middle plate.

[0012] In some embodiments of the utility model, the support block is fixed or restricted to the support middle plate by a first bolt, the support middle plate is provided with a first threaded hole that cooperates with the first bolt, and the support block is provided with a first long strip hole for the first bolt to pass through and is arranged vertically.

[0013] In some embodiments of the present invention, V-shaped positioning grooves are provided on the upper end surfaces of the two support blocks.

[0014] In some embodiments of the utility model, the limiting device includes a first adjustment seat, a limiting rod arranged on the first adjustment seat and adjustable along the vertical direction, a first limiting ring and a second limiting ring arranged on the limiting rod and used to limit or fix the limiting rod on the first adjustment seat.

[0015] In some embodiments of the present utility model, a second elongated hole is provided on the first adjustment seat along the vertical direction to enable the limiting rod to be adjusted along the vertical direction.

[0016] In some embodiments of the utility model, the assembly sealing device includes a second adjustment seat arranged on the base plate, a press-in cylinder arranged on the second adjustment seat, a plug arranged at the output end of the press-in cylinder, and a second bolt for fixing or restricting the press-in cylinder on the second adjustment seat; the output end of the press-in cylinder is horizontally arranged and is adjustably connected to the second adjustment seat along the vertical direction.

[0017] In some embodiments of the present invention, a third elongated hole is provided on the second adjustment seat along the vertical direction to enable the pressing cylinder to be adjusted along the vertical direction.

[0018] In some embodiments of the present invention, an adjusting device for adjusting the vertical movement of the pressing cylinder is also included.

[0019] In some embodiments of the present invention, the adjusting device includes an L-shaped third adjusting seat, and an adjusting rod disposed on the third adjusting seat and used for pneumatically moving the third adjusting seat up and down along a vertical direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0021] in:

[0022] Figure 1 This is a schematic diagram of the structure of the airtight test fixture of the utility model. Figure 1 ;

[0023] Figure 2 This is a schematic diagram of the structure of the airtight test fixture of the utility model. Figure 2 ;

[0024] Figure 3 It is an exploded view of the airtight test fixture of the utility model;

[0025] Figure 4 It is a structural schematic diagram of the support seat of the utility model;

[0026] Figure 5 It is a structural schematic diagram of the supporting middle plate of the utility model;

[0027] Figure 6 This is a schematic diagram of the structure of the adjustment device of the utility model Figure 1 ;

[0028] Figure 7 This is a schematic diagram of the structure of the adjustment device of the utility model Figure 2 .

[0029] Description of labels:

[0030] 10. Bottom plate; 20. Support middle plate; 21. Positioning hole; 22. First threaded hole; 30. Support seat; 31. Support block; 311. First long hole; 312. Positioning groove; 32. Connecting rod; 33. Positioning column; 40. Limiting device; 41. First adjustment seat; 411. Second long hole; 42. Limiting rod; 43. First limiting ring; 44. Second limiting ring; 50. Assembly sealing device; 51. Second adjustment seat; 511. Third long hole; 52. Press into cylinder; 53. Plug; 54. Second bolt; 60. Adjusting device; 61. Third adjustment seat; 62. Adjusting rod. DETAILED DESCRIPTION

[0031] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer and more understandable, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention. Example

[0032] See also Figures 1 to 5 , is a universal wheel cylinder airtight test fixture as embodiment 1 of the utility model, including a base plate 10, a supporting middle plate 20 arranged on the base plate 10, and also including a support seat 30, a limiting device 40, and two assembled sealing devices 50. The support seat 30 is used to support the brake wheel cylinder. The support seat 30 is arranged on the supporting middle plate 20 and is adjustably connected to the supporting middle plate 20 along the vertical direction; the limiting device 40 is arranged on the base plate 10 or the supporting middle plate 20, and is used to abut against the side wall of the brake wheel cylinder; the two assembled sealing devices 50 are arranged on the base plate 10 and are located on both sides of the supporting middle plate 20. The assembled sealing device 50 is used to press the leather cover into the wheel cylinder body and seal it. The airtight test fixture of the utility model can not only realize the assembly of the holster but also ensure the sealing during the airtight test by providing the assembly sealing device 50. Furthermore, the adjustable support seat 30 is provided to adapt to sub-pumps of different specifications, which not only improves the efficiency of assembly and testing and reduces the work intensity of workers, but also improves the versatility of the airtight test fixture.

[0033] The airtight detection fixture of this embodiment also includes an airtight testing device, a lifting cylinder arranged on one side of the airtight testing device, a mounting plate arranged at the output end of the lifting cylinder, and a sealing head arranged below the mounting plate. The sealing head is connected to the airtight testing device through an output pipe, and an air passage is arranged inside the sealing head. The structures and connection relationships of the airtight testing device, the lifting cylinder, the mounting plate, etc. all adopt existing technologies and will not be described in detail.

[0034] The support base 30 of this embodiment adopts the following two methods:

[0035] First, the support seat 30 includes two support blocks 31 arranged on both sides of the support middle plate 20. The support blocks 31 can be locked on the support middle plate 20 by a first bolt. When adjusting, loosen the first bolt and lock it after adjusting to the right position.

[0036] Second, the support seat 30 includes support blocks 31 arranged on both sides of the supporting middle plate 20, a connecting rod 32 for connecting the two support blocks 31, and a positioning column 33 arranged on the lower end surface of the connecting rod 32. A positioning hole 21 for cooperating with the positioning column 33 is provided on the supporting middle plate 20. The two support blocks 31 are connected by the connecting rod 32, which makes adjustment easier, and the cooperation between the positioning column 33 and the positioning hole 21 can play a better positioning and guiding role.

[0037] In the above two methods, the support block 31 is fixed or restricted on the supporting middle plate 20 by a first bolt, and a first threaded hole 22 cooperating with the first bolt is arranged on the supporting middle plate 20, and a first long hole 311 for the first bolt to pass through and arranged vertically is arranged on the support block 31; V-shaped positioning grooves 312 are arranged on the upper end surfaces of the two support blocks 31 to better position brake cylinders of different specifications.

[0038] The limiting device 40 includes a first adjustment seat 41, a limiting rod 42 arranged on the first adjustment seat 41 and adjustable along the vertical direction, a first limiting ring 43 and a second limiting ring 44 arranged on the limiting rod 42 and used to limit or fix the limiting rod 42 on the first adjustment seat 41, and the head of the limiting rod 42 can be against the outer wall of the brake cylinder. A second long strip hole 411 is arranged on the first adjustment seat 41 along the vertical direction to enable the limiting rod 42 to be adjusted along the vertical direction. The first limiting ring 43 and the second limiting ring 44 are respectively located at the two end surfaces of the first adjustment seat 41. The first limiting ring 43 is first set on the limiting rod 42, and then the second limiting ring 44 is set on the limiting rod 42 after passing through the second long hole 411; when it is for different brake cylinders, first adjust the horizontal height of the limiting rod 42 according to the height. Specifically, loosen the first limiting ring 43 and / or the second limiting ring 44 to move the limiting rod 42 up and down. For brake cylinders with different outer diameters, loosen the first limiting ring 43 and the second limiting ring 44. After the forward or backward limiting rod 42 reaches the specified position, tighten the first limiting ring 43 and the second limiting ring 44. Therefore, the limiting device 40 can adapt to the limiting of brake cylinders of different specifications.

[0039] The assembly sealing device 50 includes a second adjustment seat 51 disposed on the bottom plate 10, a press-in cylinder 52 disposed on the second adjustment seat 51, a plug 53 disposed at the output end of the press-in cylinder 52, and a second bolt 54 used to fix or restrict the press-in cylinder 52 on the second adjustment seat 51. The output end of the press-in cylinder 52 is horizontally disposed and is adjustably connected to the second adjustment seat 51 along the vertical direction. A third elongated hole 511 is disposed on the second adjustment seat 51 along the vertical direction to enable the press-in cylinder 52 to be adjusted along the vertical direction. Specifically, the second bolt 54 can be threadedly connected to the press-in cylinder 52 by passing through the third elongated hole 511.

[0040] In this embodiment, the second adjustment seat 51 and the base plate 10 also adopt an adjustable connection method to adapt to the assembly and testing of brake cylinders of different lengths; and the press-in cylinder 52 is adjustably connected to the second adjustment seat 51 in a vertical manner to adapt to the assembly and testing of brake cylinders of different outer diameter specifications, further improving the versatility of the test fixture. Example

[0041] See also Figures 1 to 7, is a universal sub-pump airtightness test fixture as embodiment 2 of the utility model. This embodiment adds an adjustment device 60 on the basis of embodiment 1. Specifically, the airtightness test fixture also includes an adjustment device 60 for adjusting the vertical movement of the press-in cylinder 52; the adjustment device 60 includes an L-shaped third adjustment seat 61, and an adjustment rod 62 arranged on the third adjustment seat 61 and used for pneumatically moving the third adjustment seat 61 up and down along the vertical direction. A first hole for the second bolt 54 to pass through is set on the third adjusting seat 61, and a second hole for the output end of the press-in cylinder 52 to pass through is set on the third adjusting seat 61. The adjusting rod 62 is first threadedly connected to the third adjusting seat 61 and then the bottom is against the second adjusting seat 51. The third adjusting seat 61 and the press-in cylinder 52 are installed in the following steps: first, the output end of the press-in cylinder 52 first passes through the second adjusting seat 51 and then passes through the second hole, and then the plug 53 is installed on the output end of the press-in cylinder 52 by screwing; second, the second bolt 54 first passes through the first hole and the third long hole 511 in turn, and then is threadedly connected to the press-in cylinder 52. Finally, after the third adjusting seat 61 and the press-in cylinder 52 are positioned correctly, the second bolt 54 is locked. When it is necessary to adjust the height of the press cylinder 52, first loosen the four second bolts 54. After loosening the second bolts 54, you only need to ensure that the third adjustment seat 61 can move up and down, and then rotate the adjustment rod 62 to drive the third adjustment seat 61 and the press cylinder 52 to move up and down at the same time, so as to adjust the height of the press cylinder 52. After the adjustment is completed, tighten the four bolts. The operation is simple and fast.

[0042] The working principle of the utility model airtight test fixture is as follows:

[0043] First, adjust the positions of the support seat 30, the limit device 40 and the assembly sealing device 50 according to the specifications of the brake cylinder;

[0044] Second, place the brakes on the support seat 30 respectively, press the cylinder 52 to drive the plug 53 to press the leather cover into the cylinder body of the wheel cylinder, and use the plug 53 to block the two ends of the brake wheel cylinder to ensure the sealing during the test;

[0045] Third, the lifting cylinder drives the sealing head to move downward to block the brake cylinder. The air tightness testing device performs an air tightness test on the oil inlet hole. After the test is completed, the lifting cylinder drives the sealing head to move up, and the pressing cylinder 52 drives the plug 53 to retreat, and the brake cylinder can be removed.

[0046] In summary, the airtight test fixture of the utility model can not only realize the assembly of the holster but also ensure the sealing during the airtight test by providing an assembly sealing device. Furthermore, the adjustable support seat, adjustable limit device and adjustable assembly sealing device are provided to adapt to sub-pumps of different specifications, which not only improves the efficiency of assembly and testing, reduces the work intensity of workers, but also improves the versatility of the airtight test fixture.

[0047] The utility model is described above by way of example in conjunction with the accompanying drawings. It is obvious that the specific implementation of the utility model is not limited to the above-mentioned method. As long as various non-substantial improvements are made using the method concept and technical solution of the utility model, or the concept and technical solution of the utility model are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. A universal sub-pump airtightness test fixture, characterized in that: It comprises a bottom plate (10), a supporting middle plate (20) arranged on the bottom plate (10), and further comprises: A support seat (30), the support seat (30) being used to support a brake cylinder, the support seat (30) being arranged on the support middle plate (20) and being adjustably connected to the support middle plate (20) along a vertical direction; a limiting device (40), the limiting device (40) being arranged on the bottom plate (10) or the supporting middle plate (20) and being used to abut against a side wall of the brake cylinder; Two assembly sealing devices (50), the two assembly sealing devices (50) are arranged on the bottom plate (10) and are located on both sides of the supporting middle plate (20), and the assembly sealing devices (50) are used to press the leather cover into the slave cylinder body and seal it.

2. A universal sub-pump airtightness test fixture according to claim 1, characterized in that: The support seat (30) comprises support blocks (31) arranged on both sides of the support middle plate (20), a connecting rod (32) for connecting the two support blocks (31), and a positioning column (33) arranged on the lower end surface of the connecting rod (32); and a positioning hole (21) for cooperating with the positioning column (33) is arranged on the support middle plate (20).

3. A universal sub-pump airtightness test fixture according to claim 2, characterized in that: The support block (31) is fixed or restricted on the support middle plate (20) by a first bolt, the support middle plate (20) is provided with a first threaded hole (22) matched with the first bolt, and the support block (31) is provided with a first long hole (311) for the first bolt to pass through and arranged vertically.

4. A universal sub-pump airtightness test fixture according to claim 2, characterized in that: V-shaped positioning grooves (312) are provided on the upper end surfaces of the two support blocks (31).

5. A universal sub-pump airtightness test fixture according to claim 1, characterized in that: The limiting device (40) comprises a first adjustment seat (41), a limiting rod (42) arranged on the first adjustment seat (41) and adjustable along a vertical direction, and a first limiting ring (43) and a second limiting ring (44) arranged on the limiting rod (42) and used to limit or fix the limiting rod (42) on the first adjustment seat (41).

6. A universal sub-pump airtightness test fixture according to claim 5, characterized in that: A second elongated hole (411) is provided on the first adjustment seat (41) along the vertical direction to enable the limiting rod (42) to be adjusted along the vertical direction.

7. A universal sub-pump airtightness test fixture according to claim 1, characterized in that: The assembly sealing device (50) comprises a second adjustment seat (51) arranged on the base plate (10), a press-in cylinder (52) arranged on the second adjustment seat (51), a plug (53) arranged at the output end of the press-in cylinder (52), and a second bolt (54) for fixing or restricting the press-in cylinder (52) on the second adjustment seat (51); the output end of the press-in cylinder (52) is arranged horizontally and is adjustably connected to the second adjustment seat (51) along the vertical direction.

8. A universal sub-pump airtightness test fixture according to claim 7, characterized in that: A third elongated hole (511) is provided on the second adjustment seat (51) along the vertical direction to enable the pressing cylinder (52) to be adjusted along the vertical direction.

9. A universal sub-pump airtightness test fixture according to claim 1, characterized in that: It also includes an adjusting device (60) for adjusting the vertical movement of the pressing cylinder (52).

10. A universal sub-pump airtightness test fixture according to claim 9, characterized in that: The adjustment device (60) comprises an L-shaped third adjustment seat (61), and an adjustment rod (62) disposed on the third adjustment seat (61) and used to pneumatically move the third adjustment seat (61) up and down along a vertical direction.

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