Disassembling device for slide valve pair assembly of servo valve

Abstract

The utility model relates to the technical field of aircraft maintenance, in particular to a servo valve slide valve pair assembly disassembling device which comprises a base. The first mounting seat is mounted on the left side of the top end of the base; the second mounting seat is mounted on the right side of the top end of the base; the first threaded rod is movably arranged in the first mounting seat; the forcing device is mounted on the right side of the first threaded rod; the problem that the sliding valve pair assembly of the servo valve cannot be disassembled and recovered is solved, the servo valve is limited and fixed, it is guaranteed that the ejector rod accurately enters the valve body, and the ejector rod can be disassembled, assembled and replaced.

Description

Technical Field

[0001] This utility model relates to the technical field of aircraft maintenance, specifically a disassembly device for a servo valve slide valve assembly. Background Technology

[0002] Servo valves are primarily used for controlling aircraft control surfaces. The internal leakage of these valves directly impacts control, and a crucial component affecting this leakage is the spool valve assembly. As servo valves age, the wear on the spool valve assembly gradually increases, leading to increased internal leakage. Currently, servo valves with excessive internal leakage can only be scrapped, wasting resources and increasing repair costs. Therefore, a device is needed to address these issues. Utility Model Content

[0003] To address the aforementioned issues, this invention proposes a disassembly device for a servo valve slide valve assembly.

[0004] A servo valve slide valve assembly disassembly device includes a base, a first mounting seat installed on the left side of the top of the base, a second mounting seat installed on the right side of the top of the base, a first threaded rod movably disposed inside the first mounting seat, a force-applying device installed on the right side of the first threaded rod, and a front lifting device disposed on the left side of the second mounting seat.

[0005] The force-applying device has a groove on one side, a top rod connected to the right side of the groove, and an end on one side of the top rod.

[0006] A valve body is provided on one side of the front lifting device, and the slide valve component is located inside the valve body.

[0007] A rotating block is installed on the left side of the first threaded rod.

[0008] The end cap adopts an annular design, with the outer diameter portion fitting with the inner hole of the valve body, and the middle annular groove of the end cap fitting with the slide valve assembly.

[0009] The end faces of the circular top block and the top rod are designed with a 5-fold area difference.

[0010] The top rod, circular top block, and end cap are all made of H62 brass.

[0011] The inner sidewall of the first mounting base is uniformly provided with internal threads, and the first mounting base and the first threaded rod form a threaded connection.

[0012] Both ends of the valve body are equipped with mounting components fixed to the top of the base via fasteners. One end of each mounting component is fixed with a connecting seat, and a second threaded rod is movably arranged inside the connecting seat and the mounting component.

[0013] One end of each of the second threaded rods is fixed with a rotating handle, and the other end of each of the second threaded rods is movably provided with a clamping block. Sliding blocks are fixed on both sides of the bottom end of each clamping block. Each sliding block is provided with a sliding groove on its outside, and the sliding groove is located at the top inside the base. The cross-section of the sliding groove is larger than the cross-section of the sliding block, and the sliding groove and the sliding block form a sliding structure.

[0014] The force-applying device is provided with an assembly base on one side, and a groove is provided inside the assembly base. Both the upper and lower ends of the assembly base are movably provided with third threaded rods. A handle is installed at one end of each third threaded rod, and an assembly block is installed at the other end of each handle.

[0015] The assembly blocks are provided in two sets, and the two sets of assembly blocks are symmetrically distributed about the central axis of the circular top block.

[0016] The beneficial effects of this utility model are: this utility model not only solves the problem of the inability to disassemble and restore the servo valve slide valve assembly, and realizes the limiting and fixing of the servo valve to ensure that the push rod accurately enters the valve body, but also realizes that the push rod can be disassembled and replaced. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] Figure 1 This is a top view cross-sectional structural diagram of the present invention;

[0019] Figure 2 For the present utility model Figure 1 A magnified view of the structure at point A in the middle;

[0020] Figure 3 This is a schematic diagram of a partial cross-sectional structure of the present invention.

[0021] Figure 4 This is a front view cross-sectional structural diagram of the mounting base of this utility model.

[0022] In the diagram: 1. Base; 2. First mounting seat; 3. First threaded rod; 4. Rotating block; 5. Circular top block; 6. Mounting assembly; 7. Sliding groove; 8. Sliding block; 9. Second mounting seat; 10. Front lifting device; 11. Fixing component; 12. Rotary handle; 13. Second threaded rod; 14. Connecting seat; 15. Top rod; 16. Clamping block; 17. Valve body; 18. Slide valve assembly; 19. End; 20. Force application device; 21. Handle; 22. Assembly seat; 23. Third threaded rod; 24. Assembly block; 25. Groove. Detailed Implementation

[0023] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the utility model will be further described below.

[0024] like Figures 1 to 4 As shown, a servo valve slide valve sub-assembly disassembly device includes a base 1, a first mounting seat 2 installed on the left side of the top of the base 1, a second mounting seat 9 installed on the right side of the top of the base 1, a first threaded rod 3 movably disposed inside the first mounting seat 2, a force-applying device 20 installed on the right side of the first threaded rod 3, and a front lifting device 10 disposed on the left side of the second mounting seat 9.

[0025] The force-adding device 20 has a groove 25 on one side, a push rod 15 connected to the right side of the groove 25, and an end 19 on one side of the push rod 15.

[0026] A valve body 17 is provided on one side of the front lifting device 10, and the slide valve auxiliary workpiece 18 is provided inside the valve body 17.

[0027] This invention not only solves the problem of the inability to disassemble and restore the servo valve slide valve assembly, but also achieves the limiting and fixing of the servo valve, ensuring that the push rod 15 accurately enters the valve body, and enables the push rod to be disassembled and replaced.

[0028] A rotating block 4 is installed on the left side of the first threaded rod 3.

[0029] The end 19 adopts an annular design, with its outer diameter part fitting with the inner hole of the valve body 17 with clearance. The middle annular groove of the end 19 fits with the slide valve sub-workpiece 18 with clearance, which can make the slide valve sub-workpiece 18 uniformly stressed as a whole and ensure smooth operation.

[0030] The end faces of the circular top block 5 and the top rod 15 are designed with a 5-fold area difference. This area difference design reduces operational intensity. The precise fit between the top rod 15 and the slide valve assembly and valve body ensures operational accuracy.

[0031] The top rod 15, the circular top block 5, and the end 19 are all made of H62 brass. The use of H62 brass reduces the possibility of product damage during operation and ensures product safety. By using this device, the slide valve assembly can be replaced, thus enabling the repair of servo valves with excessive internal leakage and reducing repair costs.

[0032] The inner sidewall of the first mounting base 2 is uniformly provided with internal threads, and the first mounting base 2 and the first threaded rod 3 form a threaded connection.

[0033] Both ends of the valve body 17 are provided with mounting components 6 fixed to the top of the base 1 via fasteners 11. One end of each mounting component 6 is fixed with a connecting seat 14. A second threaded rod 13 is movably provided inside the connecting seat 14 and the mounting component 6.

[0034] One end of each of the second threaded rods 13 is fixed with a handle 12, and the other end of each of the second threaded rods 13 is movably provided with a clamping block 16. Sliding blocks 8 are fixed on both sides of the bottom end of each clamping block 16. Each sliding block 8 is provided with a sliding groove 7 on its outside, and the sliding groove 7 is located at the top inside the base 1. The cross-section of the sliding groove 7 is larger than the cross-section of the sliding block 8. The sliding groove 7 and the sliding block 8 form a sliding structure, which can push the clamping block 16 to move stably and stably clamp and limit the valve body 17.

[0035] The force-applying device 20 has an assembly base 22 on one side, and a groove 25 is provided inside the assembly base 22. Both the upper and lower ends of the assembly base 22 are movably provided with third threaded rods 23. A handle 21 is installed at one end of each third threaded rod 23, and an assembly block 24 is installed at the other end of each handle 21. By providing components such as the handle 21, assembly base 22, third threaded rod 23, and assembly block 24, the disassembly device can be used by pushing the circular top block into the interior of the valve body to disassemble the slide valve assembly. With the addition of the above components, the top rod can be disassembled and replaced, making the disassembly device easier to maintain and use.

[0036] The assembly block 24 is provided in two sets, and the two sets of assembly blocks 24 are symmetrically distributed about the central axis of the circular top block 5.

[0037] like Figure 1 and Figure 3 As shown, the first threaded rod 3 on one side of the force-applying device 20 is slowly rotated, gradually pushing the slide valve sub-workpiece 18 out of the valve body 17. Utilizing the pressure principle, the circular top block 5 and the end 19 are designed with a five-fold area difference. This cross-sectional area conversion reduces workload. An annular groove is designed inside the end 19, ensuring uniform force distribution on the slide valve sub-workpiece 18 and guaranteeing stability during operation. To prevent damage to the oil passage in the housing from the tooling during operation, a valve seat is designed for easy disassembly, with a hole drilled in the seat to prevent the valve sleeve from being restricted during disassembly.

[0038] like Figure 1 and Figure 3 As shown, after taking the valve body 17 and placing it on one side of the front lifting device 10, the second threaded rod 13 at both ends of the rotating handle 12 is grasped in sequence. The rotation of the second threaded rod 13 pushes the clamping block 16 to fit against both sides of the valve body 17 through the sliding block 8 inside the sliding groove 7, thereby clamping and limiting the valve body 17.

[0039] Specifically, such as Figure 3 and Figure 4 As shown, when disassembling the top rod 15, hold the handle 21, rotate the third threaded rod 23 to pull the assembly block 24 to one end, so that it is separated from the outer wall of the circular top block 5. Then pull the top rod 15 to one side so that the circular top block 5 at one end moves out of the inside of the groove 25, and the top rod 15 can be removed for replacement and maintenance.

[0040] Working principle: When using this utility model, take the valve body 17 to be disassembled and place it on one side of the front lifting device 10. Then, hold the second threaded rod 13 at both ends of the handle 12 and rotate it. The rotation of the second threaded rod 13 pushes the clamping block 16 to fit against both sides of the valve body 17 through the sliding block 8 in the sliding groove 7, clamping and limiting the valve body 17. After the valve body 17 is fixed, slowly rotate the first threaded rod 3 on one side of the force-applying device 20 to slowly push the slide valve sub-workpiece 18 out of the valve body 17. Subsequently, the third threaded rod 23 can be rotated to pull the assembly block 24 to one end, so that it is separated from the outer wall of the circular top block 5. Then, pull the top rod 15 to one side so that the circular top block 5 at one end moves out of the groove 25, and the top rod 15 can be removed for replacement and maintenance.

[0041] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A servo valve spool-variator subassembly disassembly device comprising a base (1), characterized in that: It also includes the first mounting seat (2) installed on the left side of the top end of the base (1), the second mounting seat (9) installed on the right side of the top end of the base (1), the first threaded rod (3) movably arranged inside the first mounting seat (2), the force adding device (20) installed on the right side of the first threaded rod (3), and the front jacking device (10) arranged on the left side of the second mounting seat (9). One side of the force adding device (20) is provided with a groove (25), and the right side of the groove (25) is connected with a top rod (15). One side of the front jacking device (10) is provided with a valve body (17), and a slide valve auxiliary workpiece (18) is arranged inside the valve body (17).

2. A servo valve spool subassembly disassembly device according to claim 1, wherein: The left side of the first threaded rod (3) is provided with a rotating block (4).

3. A servo valve spool subassembly disassembly device according to claim 1, wherein: The end head (19) adopts an annular design, and the outer diameter portion is in clearance fit with the inner hole of the valve body (17), and the middle annular groove of the end head (19) is in clearance fit with the slide valve auxiliary workpiece (18).

4. A servo valve spool subassembly disassembly device according to claim 1, wherein: The top rod (15) is provided with a circular top block (5), and the end surface of the circular top block (5) and the top rod (15) adopts a 5 times area difference design.

5. The servo valve slide valve assembly disassembly device according to claim 1, characterized in that: The top rod (15), the circular top block (5) and the end head (19) are all made of H62 brass material.

6. The servo valve slide valve assembly disassembly device according to claim 1, characterized in that: The inner side wall of the first mounting seat (2) is uniformly provided with internal threads, and the first mounting seat (2) and the first threaded rod (3) are in threaded connection.

7. The servo valve slide valve assembly disassembly device according to claim 1, characterized in that: The front and rear ends of the valve body (17) are both provided with mounting assemblies (6) fixed to the top end of the base (1) through fixing members (11), one end of the mounting assembly (6) is fixed with a connecting seat (14), and the connecting seat (14) and the inside of the mounting assembly (6) movably arrange a second threaded rod (13).

8. The servo valve slide valve assembly disassembly device according to claim 7, characterized in that: One end of the second threaded rod (13) is fixed with a rotating handle (12), the other end of the second threaded rod (13) movably arranges a clamping block (16), both sides of the bottom end of the clamping block (16) are fixed with sliding blocks (8), the outside of the sliding block (8) is provided with a sliding groove (7), and the sliding groove (7) is arranged at the top end inside the base (1), the cross section of the sliding groove (7) is larger than the cross section of the sliding block (8), and the sliding groove (7) and the sliding block (8) form a sliding structure.

9. A servo valve slide valve assembly disassembly device according to claim 1, characterized in that: One side of the force adding device (20) is provided with an assembly seat (22), the inside of the assembly seat (22) is provided with a groove (25), the upper and lower ends inside the assembly seat (22) movably arrange third threaded rods (23), one end of the third threaded rod (23) is provided with a handle (21), and the other end of the handle (21) is provided with an assembly block (24).

10. A servo valve slide valve assembly disassembly device according to claim 9, characterized in that: The assembly block (24) is provided with two groups, and the two groups of assembly blocks (24) are symmetrically distributed about the central axis of the circular top block (5).

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