Brake caliper piston taking-out device

Abstract

The utility model relates to the technical field of brake devices, in particular to a brake caliper piston taking-out device which comprises a supporting frame, a piston taking-out device, a piston taking-out device, a piston taking-out device, a piston taking-out device, a piston taking-out device and a piston taking-out device. The sealing element is used for sealing the opening of the piston cylinder body; the supporting piece is located on the supporting frame and used for supporting the sealing piece; the pressurizing device is used for pressurizing a piston oil duct of the brake caliper through a pipeline; the piston taking-out device has the advantages that an original piston oil channel of the brake caliper is utilized, an external pressurizing device is connected, a clamped piston is taken out through pressure generated by media, and the piston taking-out device is convenient to operate, time-saving and labor-saving.

Description

Technical Field

[0001] The utility model relates to the technical field of brake devices, in particular to a brake caliper piston removal device. Background Art

[0002] The brake caliper is a key part of the brake system in cars, motorcycles, forklifts and other vehicles. It includes a metal shell installed on the outside of the brake pad, and a piston (usually an even number, located on both sides of the brake pad) and a hydraulic oil circuit connected to the corresponding piston cylinder are installed inside the metal shell. A rubber ring is installed on the piston for dynamic sealing and to prevent oil leakage. When braking is required, the hydraulic oil will enter the piston through the oil circuit and use the hydraulic principle to push the piston to move toward the brake disc. In this process, the piston will squeeze the brake pad, so that the brake pad is in close contact with the brake disc, and the friction will slow down the rotation of the wheel, thereby achieving the braking effect.

[0003] When the brake caliper is used for a long time, the rubber ring on the piston is damaged or aged, which often causes the piston to rust and get stuck in the metal shell. This requires maintenance personnel to remove the rusted piston and replace it. In the prior art, maintenance personnel generally need to cut the brake caliper open and manually hammer the piston or heat the piston and then hammer it to remove the piston. Finally, the brake caliper needs to be welded together. This is not only time-consuming and labor-intensive, but may also cause the piston cylinder to deform, thereby affecting the subsequent installation of a new piston and the sealing of the piston cylinder. Utility Model Content

[0004] In order to solve the problem that the method of removing the piston in the prior art is time-consuming and labor-intensive, and causes deformation of the brake caliper piston cylinder body, affecting subsequent installation and sealing, the utility model provides a brake caliper piston removal device.

[0005] In order to achieve the above objectives, the following technical solutions are proposed:

[0006] A brake caliper piston removal device, comprising:

[0007] A support frame, for being placed transversely in a brake gap of a brake caliper and between corresponding upper and lower pistons;

[0008] A seal for closing the piston cylinder opening;

[0009] A support member, located on the support frame, for supporting the sealing member;

[0010] A pressurizing device is used to pressurize the oil channel of the brake caliper through a pipeline.

[0011] Furthermore, the support frame includes vertical support plates on both sides and a transverse support plate connecting the vertical support plates; the vertical distance between the upper and lower ends of the vertical support plates and the transverse support plates is greater than the height of the piston.

[0012] Furthermore, the sealing component comprises a blocking portion and a limiting portion, the blocking portion matches the diameter of the piston cylinder opening of the brake caliper, and the limiting portion has a larger diameter than the blocking portion.

[0013] Furthermore, the pressurizing device is a gas pressurizing device, a hydraulic device or a water pressure device.

[0014] Furthermore, the support member is a pad or a bolt, and the support frame is provided with a screw hole that cooperates with the bolt.

[0015] The beneficial effects of the utility model are:

[0016] By utilizing the original piston oil passage of the brake caliper and an external pressurizing device, the stuck piston can be taken out by utilizing the pressure generated by the medium. This method is easy to operate, saves time and effort, and helps to improve the efficiency of repairing and replacing parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Attached Figure 1 This is the oil channel structure diagram of the brake caliper;

[0018] Attached Figure 2 This is a diagram of one use state of the piston removal device of the utility model;

[0019] Attached Figure 3 This is a diagram of two usage states of the piston removal device of the utility model;

[0020] Attached Figure 4 The three usage state diagrams of the piston removal device of the utility model;

[0021] Attached Figure 5 This is a structural schematic diagram of a support frame in the utility model;

[0022] Attached Figure 6 A structural schematic diagram of a sealing member in the utility model;

[0023] In the figure: 1. support frame; 2. sealing member; 3. support member; 4. pressurizing device; 101. vertical support plate; 102. horizontal support plate; 201. sealing part; 202. limiting part; 5. brake caliper; 6. piston; 7. sealing ring; 8. piston cylinder opening; 9. sealing cover; 10. piston oil channel; 11. pressure pipeline; 12. pressure relief valve. DETAILED DESCRIPTION

[0024] The brake caliper piston removal device of the utility model is further described below in conjunction with the embodiments.

[0025] A brake caliper piston removal device, wherein a support frame is used to be placed horizontally in the brake gap of the brake caliper and is located between the upper and lower corresponding pistons; a sealing member is used to close the piston cylinder opening; a support member is located on the support frame and is used to support the sealing member; and a pressurizing device is used to pressurize the oil channel of the brake caliper through a pipeline.

[0026] like Figure 1 As shown, the piston oil passage 10 of the brake caliper 5 is connected to a plurality of piston cylinders, thereby achieving a synchronization effect. Figure 2 , Figure 3 As shown, the outer side of the oil cylinder of the brake caliper 5 is sealed by a sealing cover 9, a piston 6 is installed inside the oil cylinder, and the upper and lower piston cylinder openings are arranged opposite to each other. A brake gap is formed between the upper and lower piston cylinder openings.

[0027] When the piston 6 inside the brake caliper 5 is stuck and cannot work normally, the maintenance personnel need to remove the brake caliper 5 from the vehicle and replace the piston 6 in the brake caliper 5. In this solution, when it is necessary to remove a single stuck piston 6, such as Figure 3 As shown, first place the support frame 1 on the left and right sides of the corresponding upper and lower pistons 6, then use the support member 3 and the seal 2 on the support frame 1 to support the remaining pistons 6 (the seal 2 plays an auxiliary supporting role and also prevents pressure leakage at other pistons 6), connect to the piston oil passage 10 of the brake caliper 5 through the external pressurizing device 4 and the pressure pipeline, and then the pressurizing device 4 injects pressure medium such as water, air or hydraulic oil into the piston oil passage 10, generating high pressure in the cavity of the piston cylinder, thereby ejecting the stuck piston 6. Figure 4 As shown, when multiple pistons 6 need to be removed, after the first piston 6 is removed through the above process, the seal 2 is placed at the opening of the piston cylinder body. The seal 2 is provided with a sealing ring 7 for sealing the opening of the piston cylinder body to prevent pressure leakage from here during the pressurization process. The pressurizing device 4 injects a pressure medium, such as water, air or hydraulic oil, into the piston oil passage 10 to generate high pressure in the cavity of the piston cylinder body, thereby pushing out the remaining pistons 6. Compared with the prior art method of using hammering and heating to remove the piston 6, this method has the characteristics of saving time and effort and being easy to operate.

[0028] like Figure 2As shown, in another case, a sealing ring 7 is installed on the outside of the piston 6, and the edge of the cylinder opening of the piston 6 has an inner edge that limits the sealing ring 7 from coming out. Generally, the piston 6 that is stuck due to rust is because the sealing ring 7 is aged and damaged, causing the piston 6 to leak oil, and over time, it rusts and sticks to the piston cylinder. First, place the support frame 1 on the left and right sides of the corresponding upper and lower piston 6, and then directly apply pressure to the piston oil channel 10 by filling the medium through the pressure device 4. Since the normal piston 6 has the sealing ring 7, it will not come out, and the stuck piston 6 can come out of the piston cylinder because the sealing ring 7 is damaged. At the same time, considering that the rusted and stuck piston 6 has a small amount of air leakage, it is sufficient to increase the pressure at this time.

[0029] In this embodiment, the pressurizing device 4 is a gas pressurizing device 4, a hydraulic device or a water pressure device, which can be a high-pressure air pump or a hydraulic pump or a high-pressure water pump. The pressurizing pressure needs to be adjusted according to the actual situation. In this embodiment, it is 20MPa-30MPa. A pressure reducing valve is installed on the pressurizing device 4, which is used to automatically reduce the pressure after the system exceeds the threshold and the work is completed. During the pressurization process, the pressure can be input from any oil hole outside the brake caliper. Figure 5 As shown, the support frame 1 is an I-shaped or C-shaped frame, including vertical support plates 101 on both sides and a transverse support plate 102 connecting the vertical support plates 101. The vertical distance between the upper and lower ends of the vertical support plate 101 and the transverse support plate 102 is greater than the height of the piston 6, so as to ensure that the piston 6 can be smoothly removed from the piston cylinder under high pressure. Among them, the vertical support plate 101 and the transverse support plate 102 are both made of metal materials and are welded to form the support frame 1. The vertical support plate 101 is located on the outside of the piston to avoid interference with the position of the piston 6.

[0030] like Figure 6 As shown, the seal 2 includes a blocking portion 201 and a limiting portion 202. The blocking portion 201 matches the diameter of the piston cylinder opening of the brake caliper 5, and the limiting portion 202 has a larger diameter than the blocking portion 201. The blocking portion 201 is used to be placed in the opening of the piston cylinder for sealing to prevent the pressure medium from leaking therefrom during the pressurization process. In this embodiment, the seal 2 is also made of metal, and a sealing ring 7 is installed on the outer ring of the blocking portion 201 to improve the sealing effect.

[0031] In one embodiment, the support member 3 is a cushion block, which is easy to take and put. In another embodiment, the support member 3 is a bolt, and a screw hole matching the bolt is provided on the support frame 1. The maintenance personnel can tighten the sealing member 2 with the bolt by screwing.

Claims

1. A brake caliper piston removal device, characterized in that: include: A support frame (1) is used to be placed transversely in the brake gap of the brake caliper (5) and located between upper and lower corresponding pistons (6); A sealing member (2) for sealing the piston cylinder opening; A support member (3), located on the support frame (1), and used for supporting the sealing member (2); The pressurizing device (4) is used to pressurize the piston oil passage (10) of the brake caliper (5) through a pipeline.

2. The brake caliper piston extraction device according to claim 1, characterized in that: The support frame (1) comprises vertical support plates (101) on both sides and a transverse support plate (102) connecting the vertical support plates (101); the vertical distance between the upper and lower ends of the vertical support plate (101) and the transverse support plate is greater than the height of the piston.

3. The brake caliper piston extraction device according to claim 1 or 2, characterized in that: The sealing member (2) comprises a blocking portion (201) and a limiting portion (202); the blocking portion (201) matches the diameter of the piston cylinder opening of the brake caliper (5); and the limiting portion (202) has a larger diameter than the blocking portion (201).

4. The brake caliper piston extraction device according to claim 1 or 2, characterized in that: The pressurizing device (4) is a gas pressurizing device (4), a hydraulic device or a water pressure device.

5. The brake caliper piston extraction device according to claim 3, characterized in that: The pressurizing device (4) is a gas pressurizing device, a hydraulic device or a water pressure device.

6. The brake caliper piston extraction device according to claim 1, 2 or 5, characterized in that: The support member (3) is a cushion block or the support member (3) is a bolt, and the support frame (1) is provided with a screw hole that matches the bolt.

7. The brake caliper piston extraction device according to claim 3, characterized in that: The support member (3) is a cushion block or the support member (3) is a bolt, and the support frame (1) is provided with a screw hole that matches the bolt.

8. The brake caliper piston extraction device according to claim 4, characterized in that: The support member (3) is a cushion block or the support member (3) is a bolt, and the support frame (1) is provided with a screw hole that matches the bolt.

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