Servo valve end cover dismounting tool

Abstract

The utility model discloses a disassembling tool for an end cover of a servo valve, and belongs to the technical field of electro-hydraulic servo valve machining equipment.The disassembling tool comprises a guide shaft, a chuck is fixedly connected to the lower end of the guide shaft, a clamping jaw is arranged in the chuck, and the chuck is fixedly connected with the end cover in a clamped mode through the clamping jaw; mounting threads are formed in the positions, close to the upper ends, of the outer surfaces of the guide shafts, and limiting blocks are mounted on the guide shafts through the mounting threads in a threaded mode; the positions of the clamping jaws are adjusted by rotating the rotating disc, the clamping jaws are embedded into the grooves of the end cover to achieve accurate clamping and fixing, namely, the chuck can be fixedly clamped to the end cover, then the sliding blocks rapidly slide in the direction away from the chuck, the sliding blocks collide with the limiting blocks, and the end cover can be pulled out through the momentum of collision; when the device is used for disassembling the end cover, the end cover cannot be damaged, in the disassembling process, the momentum direction of impact is parallel to the central axis of the end cover, the end cover is evenly stressed and cannot be clamped, and the disassembling efficiency is very high.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electro-hydraulic servo valve processing equipment, and particularly relates to a servo valve end cover dismounting tool. BACKGROUND

[0002] The electro-hydraulic servo valve is a kind of precise hydraulic control element, which can control the output flow and pressure. Since the servo valve itself is very precise, the dismounting process is relatively complex. The servo valve end cover, as a key component for sealing the pilot control oil, needs to be more cautious during the dismounting process. The end cover is designed with a boss, on which an O-shaped sealing ring is mounted. The boss part penetrates into the inside of the valve body, and the sealing ring and the valve body form an interference fit. Therefore, it is relatively laborious to dismount the end cover.

[0003] The traditional dismounting of the servo valve end cover generally adopts the way of prying out directly with a straight screwdriver. If a little carelessness occurs, the end cover will be scratched, leading to damage of the sealing performance, or the end cover will be stuck due to uneven force on one side. Therefore, the servo valve end cover dismounting tool is improved. CONTENT OF THE INVENTION

[0004] In view of the deficiencies of the prior art, the present application provides a servo valve end cover dismounting tool, which overcomes the deficiencies of the prior art and aims to solve the problems in the prior art.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a servo valve end cover dismounting tool, comprising a guide shaft, a chuck is fixedly connected to the lower end of the guide shaft, a clamping jaw is arranged in the inside of the chuck, an end cover is fixedly connected to the chuck through the clamping jaw, a mounting thread is arranged on the outer surface of the guide shaft close to the upper end position, a limiting block is threadedly mounted on the guide shaft through the mounting thread, and a sliding block is slidingly sleeved on the outer surface of the guide shaft between the chuck and the limiting block.

[0006] By adopting the above technical scheme, when the end cover of the servo valve is dismounted, the chuck is first fixedly connected to the end cover through the clamping jaw, and then the sliding block is quickly slid away from the chuck, so that the sliding block hits the limiting block. That is, the end cover can be pulled out through the momentum of the impact. The end cover is not damaged when dismounted by the device, and the momentum direction of the impact is parallel to the central axis of the end cover during dismounting. The end cover is evenly stressed and will not be stuck. The dismounting efficiency is very high.

[0007] As a preferred technical scheme of the present application, a groove is annularly arranged on the outer wall of the end cover, the convex edge of the clamping jaw is embedded into the inside of the groove, and the clamping jaw is matched with the groove.

[0008] By adopting the above technical scheme, the convex edge of the clamping jaw is embedded into the inside of the groove, so as to realize the fixed connection between the chuck and the end cover, and provide necessary conditions for subsequent dismounting work.

[0009] As a preferred technical solution of the present application, the inside of the chuck is provided with a movable slot, the clamping jaw slides in the inside of the movable slot, the upper surface of the chuck is provided with a limiting slot above the movable slot, the top of the clamping jaw is fixedly connected with an adjusting rod in the inside of the limiting slot, the outer surface of the guide shaft is provided with a connecting thread above the chuck, the guide shaft is threadedly sleeved with a rotating disc through the connecting thread, the upper surface of the rotating disc is provided with an arc-shaped slot, and the upper end of the adjusting rod extends to the outside through the arc-shaped slot.

[0010] By adopting the above technical solution, the position of the clamping jaw can be adjusted by rotating the rotating disc through the cooperation between the movable slot, the clamping jaw, the limiting slot, the adjusting rod, the connecting thread, the rotating disc and the arc-shaped slot, so that the clamping jaw is embedded into the groove of the end cover to realize precise clamping and fixing, and the device can also fix end covers of different sizes within a certain range, which helps to improve the applicability of the device.

[0011] As a preferred technical solution of the present application, the outer diameter of the adjusting rod matches the inner diameter of the arc-shaped slot, and the outer size of the clamping jaw matches the internal space size of the movable slot.

[0012] By adopting the above technical solution, the arc-shaped slot is rotated by rotating the rotating disc, and since the adjusting rod matches the arc-shaped slot, the rotation of the arc-shaped slot drives the adjusting rod to move horizontally in the limiting slot. The clamping jaw moves synchronously through the movement of the adjusting rod, and the movable slot provides a path for the movement of the clamping jaw, ensuring the linearity and stability of the movement of the clamping jaw.

[0013] As a preferred technical solution of the present application, the number of the movable slot, the clamping jaw, the limiting slot, the adjusting rod and the arc-shaped slot is four and they are one-to-one corresponding, and the four movable slots, clamping jaws, limiting slots, adjusting rods and arc-shaped slots are uniformly distributed in a circular array about the central axis of the guide shaft.

[0014] By adopting the above technical solution, the stress on the end cover is uniform during disassembly, and the end cover will not be stuck.

[0015] As a preferred technical solution of the present application, the inside of the sliding block is provided with a through hole, the diameter of the through hole is slightly larger than the diameter of the guide shaft, and the outer surface of the sliding block is provided with anti-slip lines.

[0016] By adopting the above technical solution, the sliding block can freely slide on the guide shaft, and the anti-slip lines can increase the friction to prevent the sliding block from slipping off the hand.

[0017] As a preferred technical scheme of the present application, the number of the limiting blocks is two, and the two limiting blocks are symmetrically installed on the outer surface of the guide shaft, and the upper limiting block has a small part of the boss area downward, and the lower limiting block has a small part of the boss area upward.

[0018] By adopting the above technical scheme, loosening of the limiting block caused by impact of the sliding block can be avoided.

[0019] As a preferred technical scheme of the present application, the guide shaft, the chuck, the clamping jaw, the rotating disc, the sliding block and the limiting block are all made of stainless steel.

[0020] By adopting the above technical scheme, the parts made of stainless steel have high strength and are not easy to be corroded, and can be used for a long time.

[0021] Compared with the prior art, the present application has the following beneficial effects:

[0022] 1. In the present application, when the end cover of the servo valve is disassembled, the chuck is first fixedly connected to the end cover through the clamping jaw, and then the sliding block is quickly slid away from the chuck, so that the sliding block impacts the limiting block, and the end cover can be pulled out through the momentum of the impact. The end cover is not damaged when disassembled by the device, and the momentum direction of the impact is parallel to the central axis of the end cover when disassembled, so that the end cover is uniformly stressed and will not be stuck, and the disassembly efficiency is very high.

[0023] 2. In the present application, through the cooperation between the movable groove, the clamping jaw, the limiting groove, the adjusting rod, the connecting thread, the rotating disc and the arc-shaped groove, the position of the clamping jaw can be adjusted by rotating the rotating disc, so that the clamping jaw is embedded into the groove of the end cover to realize precise clamping and fixing, and the device can also fix end covers of different sizes within a certain range, which helps to improve the applicability of the device.

[0024] The specific embodiments of the present application are disclosed in detail in the following description and drawings, and the principles of the present application can be adopted. It should be understood that the embodiments of the present application are not limited in scope. BRIEF DESCRIPTION OF DRAWINGS

[0025] The drawings are used to provide a further understanding of the present application, and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the present application, and do not constitute a limitation on the present application. In the drawings:

[0026] Figure 1 It is a schematic diagram of the overall structure of the present application;

[0027] Figure 2 It is a schematic diagram of the local structure of the present application;

[0028] Figure 3 It is the internal structure schematic diagram of the chuck of the application;

[0029] Figure 4 It is the partial structure split schematic diagram of the application.

[0030] In the figure: 1, guide shaft; 2, chuck; 3, sliding block; 4, limit block; 5, end cover; 6, recess; 7, mounting thread; 8, movable slot; 9, limiting slot; 10, claw; 11, adjusting rod; 12, connecting thread; 13, rotating disc; 14, arc-shaped slot. DETAILED DESCRIPTION

[0031] In order to make the technical means, creative features, purposes and effects of the utility model easy to understand, the utility model is further described below in combination with specific embodiments.

[0032] As Figure 1 - Figure 4 Indicated, the embodiment provides a kind of servo valve end cover dismounting tool, including guide shaft 1, the lower end of guide shaft 1 is fixedly connected with chuck 2, the inside of chuck 2 is provided with claw 10, chuck 2 is fixedly connected with end cover 5 by claw 10, the outer surface of guide shaft 1 is close to the upper end position and is provided with mounting thread 7, guide shaft 1 is fixed with limit block 4 by mounting thread 7, the outer surface of guide shaft 1 is slidably sleeved with sliding block 3 between chuck 2 and limit block 4, when using, when the end cover 5 of servo valve is disassembled, chuck 2 is first fixedly connected in end cover 5 by claw 10, then sliding block 3 is quickly slid in the direction away from chuck 2, so that sliding block 3 impacts limit block 4, i.e. end cover 5 can be pulled out by the momentum of impact, end cover 5 is not damaged by the device dismounting, and when disassembling, the momentum direction of impact is parallel to the central axis of end cover 5, end cover 5 is uniformly stressed, not stuck, and disassembly efficiency is very high.

[0033] In the embodiment, as Figure 1 Indicated, the outer wall of end cover 5 is annularly provided with recess 6, the convex edge of claw 10 is embedded into the inside of recess 6, and claw 10 is matched with recess 6, in use, by embedding the convex edge of claw 10 into the inside of recess 6, the fixed clamping between chuck 2 and end cover 5 is realized, and necessary conditions are provided for subsequent dismounting work.

[0034] In the embodiment, as Figures 2-4As shown, the inside of the chuck 2 is provided with a movable slot 8, the pawl 10 slides inside the movable slot 8, the upper surface of the chuck 2 is provided with a limiting slot 9 above the movable slot 8, the top of the pawl 10 is fixedly connected with an adjusting rod 11 inside the limiting slot 9, the outer surface of the guide shaft 1 is provided with a connecting thread 12 above the chuck 2, the guide shaft 1 is threadedly sleeved with a rotating disc 13 through the connecting thread 12, the upper surface of the rotating disc 13 is provided with an arc-shaped slot 14, the upper end of the adjusting rod 11 extends to the outside through the arc-shaped slot 14, in use, through the cooperation between the movable slot 8, the pawl 10, the limiting slot 9, the adjusting rod 11, the connecting thread 12, the rotating disc 13 and the arc-shaped slot 14, the position of the pawl 10 can be adjusted by rotating the rotating disc 13, so that the pawl 10 is embedded into the groove 6 of the end cover 5 to realize precise clamping and fixing, and the device can also fix the end cover 5 of different sizes within a certain range, which helps to improve the applicability of the device.

[0035] In this embodiment, as shown in the figure, Figures 2-4 The outer diameter size of the adjusting rod 11 matches the inner diameter size of the arc-shaped slot 14, and the outer size of the pawl 10 matches the internal space size of the movable slot 8, in use, rotating the rotating disc 13 drives the arc-shaped slot 14 to rotate, since the adjusting rod 11 matches the arc-shaped slot 14, the rotation of the arc-shaped slot 14 drives the adjusting rod 11 to move horizontally inside the limiting slot 9, the movement of the adjusting rod 11 drives the pawl 10 to move synchronously, the movable slot 8 provides a path for the movement of the pawl 10, ensuring the linearity and stability of the pawl 10 during movement.

[0036] In this embodiment, as shown in the figure, Figures 2-4 The number of movable slots 8, pawls 10, limiting slots 9, adjusting rods 11 and arc-shaped slots 14 is four and one-to-one correspondence, the four movable slots 8, pawls 10, limiting slots 9, adjusting rods 11 and arc-shaped slots 14 are evenly distributed in a circular array about the central axis of the guide shaft 1, in use, ensuring that the end cover 5 is evenly stressed during disassembly and will not be stuck.

[0037] In this embodiment, as shown in the figure, Figure 1 The inside of the sliding block 3 is provided with a through hole, the diameter of the through hole is slightly larger than the diameter of the guide shaft 1, and the outer surface of the sliding block 3 is provided with anti-skid lines, in use, the sliding block 3 can slide freely on the guide shaft 1, the anti-skid lines can increase the friction force to prevent the sliding block 3 from slipping off the hand when moving.

[0038] In this embodiment, as shown in the figure, Figure 1 The number of limiting blocks 4 is two, the two limiting blocks 4 are symmetrically installed on the outer surface of the guide shaft 1, and the small part of the upper limiting block 4 protruding area faces downward, and the small part of the lower limiting block 4 protruding area faces upward, in use, the loosening of the limiting block 4 due to the impact of the sliding block 3 can be avoided.

[0039] In the embodiment, as shown in the drawings, the guide shaft 1, the chuck 2, the chuck jaw 10, the rotating disc 13, the sliding block 3 and the limiting block 4 are all made of stainless steel, and the parts made of stainless steel have high strength and are not easy to be corroded, so that they can be used for a long time. Figures 1-4

[0040] The working principle of the utility model is: when the servo valve end cover dismounting tool is used, when the end cover 5 of the servo valve is dismounted, the position of the chuck jaw 10 is adjusted by rotating the rotating disc 13, the chuck jaw 10 is embedded into the recess 6 of the end cover 5 to realize precise clamping and fixing, that is, the chuck 2 can be fixedly connected to the end cover 5, then the sliding block 3 is quickly slid away from the chuck 2, the sliding block 3 hits the limiting block 4, that is, the end cover 5 can be pulled out by the momentum of the impact, the end cover 5 is not damaged by being dismounted by the device, and when dismounting, the momentum direction of the impact is parallel to the central axis of the end cover 5, the end cover 5 is uniformly stressed, is not stuck, and the dismounting efficiency is very high.

[0041] In the description of the utility model, it should be explained that the directions or position relations indicated by the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end" and "the other end" are based on the directions or position relations shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and cannot be understood as limiting or implying that the indicated devices or elements must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the utility model. In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0042] In the description of the utility model, it should be explained that, unless otherwise explicitly specified and limited, the terms "mounting", "provided with", "connection" and the like should be understood broadly, for example, "connection" can be fixed connection, can be detachable connection, or integral connection, can be mechanical connection, can be electrical connection, can be directly connected, can be indirectly connected through an intermediate medium, and can be the communication between two elements. For ordinary skilled persons in the art, the specific meaning of the above terms in the utility model can be understood according to the specific situation.

[0043] The utility model has been described above in combination with specific embodiments, but those skilled in the art should know that these descriptions are exemplary and are not a limitation on the protection scope of the utility model. Those skilled in the art can make various modifications and changes to the utility model according to the spirit and principles of the utility model, and these modifications and changes are also within the scope of the utility model.​

Claims

1. A servo valve end cap dismounting tool comprising a guide shaft (1), characterized in that, The lower end of the guide shaft (1) is fixedly connected with a chuck (2), the inside of the chuck (2) is provided with a clamping jaw (10), the chuck (2) is fixedly connected with an end cover (5) through the clamping jaw (10), the outer surface of the guide shaft (1) is provided with a mounting thread (7) near the upper end position, the guide shaft (1) is threadedly mounted with a limiting block (4) through the mounting thread (7), and the outer surface of the guide shaft (1) is slidingly sleeved with a sliding block (3) between the chuck (2) and the limiting block (4).

2. The servo valve end cap disassembly tool of claim 1, wherein, The outer wall of the end cover (5) is annularly provided with a groove (6), the convex edge of the clamping jaw (10) is embedded into the inside of the groove (6), and the clamping jaw (10) is matched with the groove (6).

3. The servo valve end cap disassembly tool of claim 1, wherein: The inside of the chuck (2) is provided with a movable groove (8), the clamping jaw (10) slides in the inside of the movable groove (8), the upper surface of the chuck (2) is provided with a limiting groove (9) penetratingly formed above the movable groove (8), the top of the clamping jaw (10) is fixedly connected with an adjusting rod (11) in the inside of the limiting groove (9), the outer surface of the guide shaft (1) is provided with a connecting thread (12) above the chuck (2), the guide shaft (1) is threadedly sleeved with a rotating disc (13) through the connecting thread (12), the upper surface of the rotating disc (13) is penetratingly provided with an arc-shaped groove (14), and the upper end of the adjusting rod (11) penetrates through the arc-shaped groove (14) and extends to the outside.

4. The servo valve end cap disassembly tool of claim 3, wherein, The outer diameter size of the adjusting rod (11) is matched with the inner diameter size of the arc-shaped groove (14), and the outer size of the clamping jaw (10) is matched with the internal space size of the movable groove (8).

5. The servo valve end cap removal tool of claim 3, wherein: The movable groove (8), the clamping jaw (10), the limiting groove (9), the adjusting rod (11) and the arc-shaped groove (14) are all provided in four and correspond to each other, and the four movable grooves (8), clamping jaws (10), limiting grooves (9), adjusting rods (11) and arc-shaped grooves (14) are uniformly distributed in a circumferential array about the central axis of the guide shaft (1).

6. The servo valve end cap removal tool of claim 1, wherein: The inside of the sliding block (3) is provided with a through hole, the diameter of the through hole is slightly larger than the diameter of the guide shaft (1), and the outer surface of the sliding block (3) is provided with anti-skid lines.

7. The servo valve end cap removal tool of claim 1, wherein: The number of the limiting blocks (4) is two, the two limiting blocks (4) are symmetrically mounted on the outer surface of the guide shaft (1), and the small part of the upper limiting block (4) is downward, and the small part of the lower limiting block (4) is upward.

8. The servo valve end cap removal tool of claim 3, wherein: The guide shaft (1), the chuck (2), the clamping jaw (10), the rotating disc (13), the sliding block (3) and the limiting block (4) are all made of stainless steel.

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