Fixture tool for maintenance of distribution valve piston

Abstract

The utility model discloses a clamp tool for maintaining a piston of a distribution valve, and belongs to the technical field of clamp tools. A clamp tool for maintenance of a distribution valve piston comprises a clamp body fixedly installed on a maintenance table and further comprises a positioning frame fixedly installed on the clamp body, the positioning frame is connected with a clamping ring through a fixing piece, and a plurality of positioning holes are annularly formed in the surface of the clamping ring. Through the arrangement of the clamping ring and the positioning hole, the main piston can be rapidly positioned, meanwhile, it can be guaranteed that the main piston is evenly stressed in the torsion operation, the risk that the piston rod sprains, deforms and is twisted off due to uneven stress is greatly reduced, and by designing the abutting grooves and the clamping holes of different sizes, the working efficiency is improved. And auxiliary small pistons with different sizes can be conveniently and quickly inserted and fastened, so that the operation convenience of workers is greatly improved, and the maintenance efficiency of the distribution valve piston is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of fixture tooling, in particular to a fixture tooling for overhauling a distribution valve piston. Background Art

[0002] The distribution valve piston is an important component in a hydraulic system or a pneumatic system. It is usually used to control the flow direction, pressure, and flow rate of a fluid (liquid or gas). It changes the position of the internal passage of the valve by moving the piston, thereby achieving the control of fluid flow. This type of valve is commonly found in vehicle braking systems.

[0003] During the overhaul of various pistons of the distribution valve, it is necessary to inspect and torque-tighten the main piston and the auxiliary small piston. According to the current disassembly and assembly methods of various pistons of the aluminum alloy distribution valve, it is usually necessary to use a vise to clamp the piston and then perform torque operations. However, during the torque operation, the main piston is prone to uneven force, resulting in easy torsion deformation of the piston rod. Moreover, during the overhaul process, according to the different sizes of the auxiliary small pistons, the vise needs to be repeatedly operated to loosen or clamp, which is rather inconvenient to operate and leads to low overhaul efficiency. Summary of the Utility Model

[0004] The purpose of the utility model is to solve the problems that in the process of clamping the distribution valve piston by the current fixture, the main piston is prone to uneven force, resulting in easy torsion deformation of the piston rod, and it is also inconvenient to quickly fasten the auxiliary small pistons of different sizes, leading to low overhaul efficiency. A fixture tooling for overhauling a distribution valve piston is proposed.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] A fixture tooling for overhauling a distribution valve piston includes a fixture main body fixedly installed on an overhaul table, and further includes a positioning frame fixedly installed on the fixture main body. Among them, a snap ring is connected to the positioning frame through a fixing member, and a plurality of positioning holes are annularly formed on the surface of the snap ring, and a fixing area is arranged on the positioning frame.

[0007] In order to facilitate the fixation of auxiliary small pistons of different sizes, preferably, the fixing area includes two abutting grooves formed on the positioning frame, and clamping holes are formed in both of the two abutting grooves. The two clamping holes are of different sizes, and the axial cross-sectional shapes of the two clamping holes are both hexagonal.

[0008] In order to facilitate the disassembly and assembly of the snap ring and the positioning frame, preferably, the fixing member includes a bolt and a nut. The bolt passes through the surfaces of the snap ring and the positioning frame and is threadedly connected to the nut.

[0009] In order to improve the fixing effect on the snap ring, further, a gasket is sleeved on the bolt, and the gasket is located between the positioning frame and the nut.

[0010] In order to facilitate the fixing of the fixture tooling on the maintenance table, preferably, a base is fixedly connected to the bottom of the positioning frame, and a plurality of fixing rings are fixedly connected to the surface of the base in a circular shape.

[0011] In order to fix the positioning frame more firmly, preferably, anti-slip pads are fixedly connected to both clamping jaws of the fixture main body, and the material of the anti-slip pads is rubber.

[0012] Compared with the prior art, the utility model provides a fixture tooling for overhauling a distribution valve piston, and has the following beneficial effects:

[0013] 1. For the fixture tooling for overhauling the distribution valve piston, through the arrangement of the snap ring and the positioning holes, the rapid positioning of the main piston can be achieved, and at the same time, the uniform force of the main piston during the torque operation can be ensured, greatly reducing the risks of the piston rod being sprained, distorted and broken due to uneven force.

[0014] 2. For the fixture tooling for overhauling the distribution valve piston, by designing abutting grooves and clamping holes with different sizes, the rapid plug-in fastening of auxiliary small pistons with different sizes can be facilitated, greatly improving the operation convenience of the staff, and further improving the overhaul efficiency of the distribution valve piston.

[0015] Parts not involved in the device are the same as the prior art or can be realized by using the prior art. The utility model solves the problems that in the process of clamping the distribution valve piston by the current fixture, the main piston is prone to uneven force, resulting in easy distortion of the piston rod, and it is also inconvenient to quickly fasten auxiliary small pistons with different sizes, resulting in low overhaul efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is an axonometric structure diagram of a fixture tooling for overhauling a distribution valve piston proposed by the utility model;

[0017] Figure 2 is a partial axonometric structure diagram of a fixture tooling for overhauling a distribution valve piston proposed by the utility model;

[0018] Figure 3 is a partial explosion Figure 1 ;

[0019] Figure 4 is a partial explosion Figure 2 。

[0020] In the figure: 1. Fixture body; 2. Positioning frame; 3. Snap ring; 4. Positioning hole; 5. Bolt; 51. Nut; 52. Gasket; 6. Contact groove; 7. Card hole; 8. Anti-slip pad; 10. Base; 11. Fixed ring. Detailed implementation mode

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0022] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0023] Embodiment:

[0024] Refer to Figures 1 - 4 , the embodiment of the present invention provides a fixture tool for overhauling a distribution valve piston, including a fixture body 1 fixedly installed on an overhaul table. The fixture body 1 is a bench vice, and further includes a positioning frame 2 fixedly installed on the fixture body 1. Among them, a snap ring 3 is connected to the positioning frame 2 through a fixing member. A plurality of positioning holes 4 are annularly arranged on the surface of the snap ring 3, and a fixing area is arranged on the positioning frame 2.

[0025] Specifically, during use, through the settings of the snap ring 3 and the positioning holes 4, the rapid positioning of the main piston can be achieved, and at the same time, it can ensure that the main piston is evenly stressed during the torque operation, greatly reducing the risks of the piston rod being sprained, deformed, and broken due to uneven stress. Through the setting of the fixing area, it is convenient to quickly insert and fasten auxiliary small pistons of different sizes, greatly improving the operation convenience of the staff, and thus improving the overhaul efficiency of the distribution valve piston.

[0026] The fixing area includes two contact grooves 6 opened on the positioning frame 2. Card holes 7 are opened in both of the two contact grooves 6. The two card holes 7 are of different sizes, and the axial cross-sectional shapes of the two card holes 7 are both hexagonal.

[0027] Specifically, during use, first insert the piston rod on the auxiliary small piston of the distribution valve into the corresponding-sized clamping hole 7 for fixation. Then, the worker can use a wrench to perform torque operation on the auxiliary small piston. By designing the abutting grooves 6 and clamping holes 7 of different sizes, it is convenient to quickly insert and fasten the auxiliary small pistons of different sizes, greatly improving the operation convenience of the staff, and thus improving the maintenance efficiency of the distribution valve piston.

[0028] During the actual manufacturing process, this fixture and tooling need to design the corresponding-sized snap rings 3, positioning holes 4, and clamping holes 7 according to the different sizes, piston rod lengths, and piston rod buckle positions of various pistons of the distribution valve.

[0029] The fixing member includes a bolt 5 and a nut 51. The bolt 5 passes through the surfaces of the snap ring 3 and the positioning frame 2 and is threadedly connected to the nut 51.

[0030] Specifically, by using the bolt 5 and the nut 51 in cooperation, it is convenient to disassemble and assemble the snap ring 3 and the positioning frame 2, so as to replace the snap ring 3 of the corresponding size according to the size of the distribution valve piston.

[0031] A gasket 52 is sleeved on the bolt 5, and the gasket 52 is located between the positioning frame 2 and the nut 51.

[0032] Specifically, through the setting of the gasket 52, the fixing effect on the snap ring 3 can be improved.

[0033] The bottom of the positioning frame 2 is fixedly connected with a base 10, and a plurality of fixing rings 11 are fixedly connected to the surface of the base 10 in a circular shape.

[0034] Specifically, through the setting of the base 10 and the fixing rings 11, it is convenient to install the whole fixture and tooling on the maintenance table.

[0035] Anti-slip pads 8 are fixedly connected to both clamping jaws of the fixture main body 1, and the material of the anti-slip pads 8 is rubber.

[0036] Specifically, through the setting of the anti-slip pads 8, the surface friction of the clamping jaws of the fixture main body 1 can be improved, so that the positioning frame 2 can be fixed more firmly.

[0037] Working principle: During the use of this fixture and tooling for maintaining the distribution valve piston, when maintaining the main piston, the main piston of the distribution valve can be directly clamped in the plurality of positioning holes 4 of the snap ring 3 to achieve rapid positioning of the main piston. Then, the worker can use a wrench to perform torque operation on the piston rod at the center of the main piston, which can ensure that the main piston is evenly stressed during the torque operation, greatly reducing the risks of the piston rod being sprained, distorted, and broken due to uneven stress;

[0038] When overhauling the auxiliary small piston of the distribution valve, the piston rod of the auxiliary small piston can be inserted into the corresponding-sized clamping hole 7 for fixation, and then the worker can use a wrench to perform torque operation on the auxiliary small piston. By designing the abutting grooves 6 and clamping holes 7 of different sizes, it is convenient to quickly insert and fix the auxiliary small pistons of different sizes, greatly improving the operation convenience of the staff and thus improving the overhaul efficiency of the distribution valve piston.

[0039] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, making equivalent substitutions or changes should be covered within the protection scope of the present invention.

Claims

1. A fixture tool for overhauling a distribution valve piston, comprising a fixture main body (1) fixedly installed on an overhaul table, characterized in that, It further includes a positioning frame (2) fixedly installed on the fixture body (1). Among them, a snap ring (3) is connected to the positioning frame (2) through a fixing member. A plurality of positioning holes (4) are annularly formed on the surface of the snap ring (3), and a fixing area is provided on the positioning frame (2).

2. The fixture tool for overhauling the distribution valve piston according to claim 1, wherein, The fixing area includes two abutting grooves (6) formed on the positioning frame (2). Card holes (7) are formed in both of the two abutting grooves (6). The two card holes (7) are different in size, and the axial cross-sectional shapes of the two card holes (7) are both hexagonal.

3. The fixture tool for overhauling the distribution valve piston according to claim 1, characterized in that, The fixing member includes a bolt (5) and a nut (51). The bolt (5) passes through the surfaces of the snap ring (3) and the positioning frame (2) and is threadedly connected to the nut (51).

4. A fixture tool for overhauling a distribution valve piston according to claim 3, characterized in that, A gasket (52) is sleeved on the bolt (5), and the gasket (52) is located between the positioning frame (2) and the nut (51).

5. A fixture tool for overhauling a distribution valve piston according to claim 1, characterized in that, The bottom of the positioning frame (2) is fixedly connected to a base (10), and a plurality of fixing rings (11) are fixedly connected to the surface of the base (10) in a ring shape.

6. The fixture tool for overhauling the piston of the distribution valve according to claim 1, characterized in that, Anti-slip pads (8) are fixedly connected to both clamping jaws of the fixture body (1), and the anti-slip pads (8) are made of rubber.

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