Hydraulic actuator cylinder piston rod dismounting device

Abstract

The utility model discloses a dismounting device for a piston rod of a hydraulic actuator cylinder, which relates to the technical field of manufacturing and repairing of piston rods of hydraulic actuator cylinders of airplanes and comprises a bottom plate, a sliding frame and an adjusting screw. A bracket is fixed to the bottom plate, the bracket is used for bearing a to-be-disassembled hydraulic actuator cylinder, a fixed shaft seat is fixed to the end, close to the bracket, of the bottom plate, the fixed shaft seat is used for being connected with the end of a fixed cylinder of the to-be-disassembled hydraulic actuator cylinder, and a sliding groove is formed in the side, away from the fixed shaft seat, of the bracket of the bottom plate. A guide seat is fixed at one end of the bottom plate away from the fixed shaft seat; the sliding frame is connected with the sliding groove through a bolt, and a movable shaft seat is fixed to the sliding frame and used for being connected with a piston rod of the hydraulic actuator cylinder to be disassembled. One end of the adjusting screw rod is rotationally connected with the sliding frame, and the other end penetrates through the guide seat and is in threaded connection with the guide seat. The hydraulic actuator cylinder piston rod dismounting device is simple and effective, and operators can easily dismount and mount the hydraulic actuator cylinder piston rod.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of aircraft hydraulic actuating cylinder piston rod manufacturing and repair technology, more specifically relates to a hydraulic actuating cylinder piston rod dismounting device. BACKGROUND

[0002] The aircraft hydraulic actuating cylinder is one of the core components of the aircraft hydraulic system, and its main function is to convert the input hydraulic energy into mechanical energy to drive the movement of the aircraft's flight control surfaces, landing gear, cabin doors and other key components. The performance and reliability of the hydraulic actuating cylinder are crucial to the safe flight of the aircraft. Therefore, during the maintenance and repair of the aircraft, the inspection, repair and replacement of the hydraulic actuating cylinder are essential links.

[0003] The hydraulic actuating cylinder is mainly composed of a cylinder body, a piston rod, a sealing segment, an end cover and other components. Among them, the piston rod is one of the key components of the hydraulic actuating cylinder, which bears a huge pressure and load in the hydraulic system. During the repair of the hydraulic actuating cylinder, the disassembly and installation of the piston rod is one of the technical difficulties. However, the existing disassembly method has many problems, mainly in the following aspects:

[0004] (1) Volume and weight problem: The aircraft hydraulic actuating cylinder is usually large in volume and heavy in weight, which makes it necessary to cooperate with multiple people during disassembly, increasing the complexity and labor intensity of the operation. At the same time, due to the small butt joint gap between the piston rod and the hydraulic actuating cylinder, improper operation during disassembly can cause the piston rod and the hydraulic actuating cylinder to be not on the same axis, thereby scratching the piston rod or damaging the inner wall of the hydraulic actuating cylinder.

[0005] (2) Hydraulic oil leakage problem: During the disassembly of the piston rod, the hydraulic oil in the hydraulic actuating cylinder will leak due to pressure release. If the hydraulic oil cannot be effectively collected and treated, not only will it pollute the working environment, but also it may cause the surface of the hydraulic actuating cylinder or the piston rod to be wet and slippery, increasing the risk of the operator slipping, and even may cause the hydraulic actuating cylinder or the piston rod to fall accidentally, causing permanent deformation and scrap.

[0006] (3) Piston rod stroke control problem: During disassembly, it is difficult to accurately determine the extension length of the piston rod, which may cause the piston rod to be stretched or compressed excessively, thereby affecting the performance and service life of the hydraulic actuating cylinder. In addition, the traditional disassembly method cannot accurately control the movement stroke and operating force of the piston rod, which not only reduces the work efficiency, but also may cause unstable repair quality.

[0007] (4) Limitations of existing disassembly tools: Currently, the disassembly of the piston rod of the aircraft hydraulic actuator cylinder mostly relies on traditional manual tools or simple mechanical devices. These tools often have complex structures and are inconvenient to operate, and cannot adapt to the disassembly needs of different types of hydraulic actuators. In addition, these tools cannot effectively solve the problems of hydraulic oil leakage and piston rod scratching during disassembly, resulting in low maintenance efficiency and increased maintenance cost.

[0008] In summary, the existing hydraulic actuator cylinder piston rod disassembly method has many shortcomings, and there is an urgent need for a disassembly device that is simple in structure, easy to operate, and can effectively solve the problems of hydraulic oil leakage and piston rod stroke control, to improve the disassembly efficiency and maintenance quality of the aircraft hydraulic actuator cylinder piston rod, and ensure the safety and reliability of the aircraft hydraulic system. Practical new type content

[0009] Therefore, the utility model provides a hydraulic actuator cylinder piston rod disassembly device, aiming at solving the above technical problems.

[0010] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0011] A hydraulic actuator cylinder piston rod disassembly device, comprising:

[0012] A base plate is provided with a bracket for supporting the hydraulic actuator cylinder to be disassembled, and a fixed shaft seat is fixed to one end of the base plate near the bracket for connecting with the end of the fixed cylinder of the hydraulic actuator cylinder to be disassembled. A sliding groove is formed on the side of the base plate away from the fixed shaft seat; and a guide seat is fixed to the end of the base plate away from the fixed shaft seat.

[0013] A sliding frame is connected with the sliding groove by bolts and can move linearly along the sliding groove. An active shaft seat is fixed to the sliding frame for connecting with the piston rod of the hydraulic actuator cylinder to be disassembled.

[0014] An adjusting screw is rotatably connected with the sliding frame at one end and passes through the guide seat and is threadedly connected with the guide seat at the other end.

[0015] By the above technical scheme, the utility model discloses a simple and effective dismounting device is formed through the combination of the bottom plate, bracket, fixed axle seat, sliding frame, movable axle seat and adjusting screw. The structure design makes the operator can easily carry out the dismounting and installation of the hydraulic actuator piston rod, and does not need complicated tool and tedious operation step. The device realizes the accurate stretching and contraction of the piston rod through the linear motion of the sliding frame in the sliding groove and the screw thread connection of the adjusting screw. The design makes the dismounting process of the piston rod more smooth, reduces the time waste caused by improper operation, thereby significantly improve the work efficiency. The design of the device ensures that the hydraulic actuator and the piston rod always keep on the same axis during the dismounting process, avoids the piston rod scratch or the hydraulic actuator inner wall damage caused by the axis inconsistency, thereby guarantees the stability and reliability of the dismounting quality. The structure design of the device can adapt to the dismounting demand of different models of hydraulic actuator piston rod, has certain universality, reduces the situation that needs to frequently replace the dismounting tool due to the replacement of different models of hydraulic actuator. Through the accurate control of the movement stroke and operating force of the piston rod, the risk of the hydraulic actuator damage or the piston rod deformation caused by improper operation is reduced, and the safety of the maintenance process is improved.

[0016] Preferably, in the above-mentioned hydraulic actuator piston rod dismounting device, the bottom surface of the bottom plate is fixed with a plurality of supporting legs.

[0017] Preferably, in the above-mentioned hydraulic actuator piston rod dismounting device, the end of the adjusting screw away from the sliding frame is provided with a hand wheel.

[0018] Preferably, in the above-mentioned hydraulic actuator piston rod dismounting device, an oil receiving disc is further included, and the bottom plate is arranged in the oil receiving disc.

[0019] Preferably, in the above-mentioned hydraulic actuator piston rod dismounting device, a plurality of lightening grooves are formed in the bottom plate.

[0020] Preferably, in the above-mentioned hydraulic actuator piston rod dismounting device, the two ends of the oil receiving disc are provided with handles.

[0021] Preferably, in the above-mentioned hydraulic actuator piston rod dismounting device, the bottom surface of the oil receiving disc is provided with an oil discharge port.

[0022] Preferably, in the above-mentioned hydraulic actuator piston rod dismounting device, a filter joint is arranged on the oil discharge port, a control valve is connected to the filter joint, and a plug is arranged on the valve port of the control valve.

[0023] Compared with the prior art, the hydraulic actuating cylinder piston rod dismounting device provided by the utility model has the advantages that the utility model discloses a hydraulic actuating cylinder piston rod dismounting device which is simple in structure and convenient to use, can realize the dismounting of the hydraulic actuating cylinder and the piston rod, can effectively solve the problem that the dismounting of the hydraulic actuating cylinder and the piston rod is time-consuming and laborious, can control the dismounting quality of the hydraulic actuating cylinder and the piston rod to be stable and reliable, improves the work efficiency, saves time, can be applied to the production and maintenance process of the hydraulic actuating cylinder and the piston rod, has good application prospect, and has remarkable economic benefits. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, and obviously, the drawings in the following description are only the embodiments of the utility model, and for those skilled in the art, other drawings can be obtained according to the provided drawings without paying creative labor.

[0025] Figure 1 The drawing is the front view of the hydraulic actuating cylinder piston rod dismounting device provided by the utility model;

[0026] Figure 2 The drawing is the top view of the hydraulic actuating cylinder piston rod dismounting device provided by the utility model;

[0027] Figure 3 The drawing is the top view of the oil receiving disc provided by the utility model;

[0028] Figure 4 The drawing is the front view of the oil receiving disc provided by the utility model.

[0029] Among them:

[0030] 1-base plate;

[0031] 11-bracket; 12-fixed shaft seat; 13-sliding groove; 14-guide seat; 15-leg; 16-weight reduction groove;

[0032] 2-sliding frame;

[0033] 21-movable shaft seat;

[0034] 3-adjusting screw;

[0035] 31-hand wheel;

[0036] 4-oil receiving disc;

[0037] 41-handle; 42-oil discharge port; 43-filter joint; 44-control valve; 45-plug cover;

[0038] 5-to-be-dismounted hydraulic actuating cylinder. DETAILED DESCRIPTION

[0039] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0040] Referring to the drawings, the utility model discloses a hydraulic actuator piston rod dismounting device, including: Figure 1 To the drawings, Figure 2 The utility model discloses a hydraulic actuator piston rod dismounting device, including:

[0041] The bottom plate 1 is fixed with the bracket 11, and the bracket 11 is used for supporting the hydraulic actuator 5 to be dismounted, one end of the bottom plate 1 close to the bracket 11 is fixed with the fixed axle seat 12, the fixed axle seat 12 is used for connecting with the end of the fixed cylinder of the hydraulic actuator 5 to be dismounted, and the bottom plate 1 is provided with the sliding slot 13 on the side away from the fixed axle seat 12 of the bracket 11.

[0042] The sliding frame 2 is connected with the sliding slot 13 through the bolt and can move linearly along the sliding slot 13, and the sliding frame 2 is fixed with the movable axle seat 21, and the movable axle seat 21 is used for connecting with the piston rod of the hydraulic actuator 5 to be dismounted.

[0043] The adjusting screw rod 3 is rotatably connected with the sliding frame 2 at one end, and the other end passes through the guide seat 14 and is screw-connected with the guide seat 14.

[0044] In order to further optimize the above technical scheme, the bottom surface of the bottom plate 1 is fixed with a plurality of supporting legs 15.

[0045] In order to further optimize the above technical scheme, the end of the adjusting screw rod 3 away from the sliding frame 2 is provided with the hand wheel 31.

[0046] Referring to the drawings, Figure 3 To the drawings, Figure 4 Further including the oil receiving disc 4, and the bottom plate 1 is arranged in the oil receiving disc 4.

[0047] In order to further optimize the above technical scheme, a plurality of lightening grooves 16 are formed in the bottom plate 1.

[0048] In order to further optimize the above technical scheme, the two ends of the oil receiving disc 4 are provided with the handle 41.

[0049] In order to further optimize the above technical scheme, the bottom surface of the oil receiving disc 4 is provided with the oil discharge port 42.

[0050] In order to further optimize the above technical scheme, the oil discharge port 42 is provided with a filter joint 43, the filter joint 43 is connected with a control valve 44, and a valve port of the control valve 44 is provided with a plug 45.

[0051] In the embodiment, the bracket 11 is a semicircular structure.

[0052] In the embodiment, the oil receiving disc 4 is assembled by welding the handle 41 and the filter joint 43 with a filter and a sealing ring on the oil receiving disc 4. The control valve 44 composed of a valve inlet joint, a stainless steel ball valve and a valve outlet joint is connected to the filter joint 43. The plug of the flared pipe joint is installed on the valve outlet joint.

[0053] The piston rod dismounting device is assembled as follows:

[0054] The bottom plate 1, the supporting leg 15 and the guide seat 14 are fixed by hexagonal head bolt full thread, flat washer and standard spring washer, wherein the bottom plate 1 and the inner side of the guide seat 14 are fixed by hexagonal nut and hexagonal head bolt full thread. The bracket 11 and the backing plate are fixed together by cross slot countersunk screw and fixed on the bottom plate 1 by index pin. The fixed shaft seat 12 is fixed on the bottom plate 1 by large nut. The sliding frame 2 is connected on the sliding groove 13 of the bottom plate 1 by large nut. The transmission rod with a steel ball is connected on the sliding frame 2 by slotted long cylindrical end fastening screw and hexagonal nut. The adjusting screw 3 is connected with the transmission rod by penetrating the guide seat 14. The double-spoke hand wheel set with detachable handle is connected with the adjusting screw 3 by hexagonal head bolt full thread, standard spring washer, common flat key and gasket.

[0055] When the hydraulic actuator piston rod dismounting device is used, the oil receiving disc 4 is placed on the workbench, and the hydraulic actuator piston rod dismounting device is placed in the oil receiving disc 4.

[0056] The specific process steps of the embodiment are as follows:

[0057] (1) Restoring initial position: rotating the hand wheel 31, moving the sliding frame 2 to the initial position, and reading and recording the scale reading for the first time;

[0058] (2) Fixing the hydraulic actuator 5 to be dismounted: placing the hydraulic actuator 5 to be dismounted on the bracket 11 with the backing plate, and fixing the hydraulic actuator 5 to be dismounted by penetrating the two movable shaft sleeves through the end hole of the hydraulic actuator 5 to be dismounted and the end head hole of the piston rod, and placing the two movable shaft sleeves on the corresponding movable shafts;

[0059] (3) Hydraulic actuator piston rod dismounting: rotating the hand wheel 31 to drive the stretching or contraction of the piston rod, reading and recording the scale reading for the second time, and the difference between the two readings is the stretching or contraction stroke of the piston rod, thereby realizing the dismounting of the hydraulic actuator 5 to be dismounted.

[0060] The hydraulic actuating cylinder piston rod dismounting device is used to dismount the piston rod, so that the hydraulic actuating cylinder and the piston rod are on the same axis, the quick dismounting is realized, the work efficiency is improved, the time is saved, and the reliability of the repair quality is ensured.

[0061] The embodiment provides the fixed dismounting device with two same bracket 11 of semicircular structure, so that the hydraulic actuating cylinder 5 to be dismounted is horizontally placed on the device; the dismounting device is provided with a hand wheel 31 and an adjusting screw 3, the hand wheel 31 and the adjusting screw 3 are rotated to drive the sliding frame 2 fixed on the bottom plate 1, so that the piston rod is stretched along a straight line; in order to improve the effect, the dismounting device is provided with a scale table, the scale table is marked on one side of the sliding frame 2, and the stretching stroke of the piston rod is displayed; the dismounting device is designed with a hollow bottom plate and an oil receiving disc 4, excess oil generated in the process of dismounting the piston rod is collected and discharged through the oil discharge port 42 of the oil receiving disc 4; the dismounting device is simple in structure and convenient to use, can accurately control the working stroke and operating force in the process of dismounting the piston rod, improves the work efficiency, and saves time.

[0062] The various embodiments in the specification are described in a progressive manner, and each embodiment focuses on the difference from other embodiments, and the same or similar parts between the various embodiments can be referred to each other. For the device disclosed in the embodiments, since it corresponds to the method disclosed in the embodiments, the description is relatively simple, and the related parts can be referred to the method part.

[0063] The above description of the disclosed embodiments enables a person skilled in the art to implement or use the utility model. Various modifications of the embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the utility model. Therefore, the utility model will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A hydraulic actuator piston rod dismounting device, characterized in that Including: The bottom plate (1) is fixed with a bracket (11), which is used to support the hydraulic cylinder (5) to be dismounted, and the bottom plate (1) is fixed with a fixed shaft seat (12) near one end of the bracket (11), which is used to connect with the end of the fixed cylinder of the hydraulic cylinder (5) to be dismounted, and the bottom plate (1) is provided with a sliding groove (13) on the side away from the fixed shaft seat (12) of the bracket (11); The bottom plate (1) is fixed with a guide seat (14) away from the fixed shaft seat (12); The sliding frame (2) is connected with the sliding groove (13) by bolts and can move linearly along the sliding groove (13), and the sliding frame (2) is fixed with a movable shaft seat (21) for connecting with the piston rod of the hydraulic cylinder (5) to be dismounted; The adjusting screw (3) is rotatably connected with the sliding frame (2) at one end and passes through the guide seat (14) and is threadedly connected with the guide seat (14) at the other end.

2. The hydraulic actuator piston rod dismounting device according to claim 1, characterized in that The bottom surface of the bottom plate (1) is fixed with a plurality of supporting legs (15).

3. The hydraulic actuator rod dismounting device according to claim 1, characterized in that The end of the adjusting screw (3) away from the sliding frame (2) is provided with a hand wheel (31).

4. The hydraulic actuator piston rod dismounting device according to any one of claims 1 to 3, characterized in that It also includes an oil receiving disc (4), and the bottom plate (1) is placed in the oil receiving disc (4).

5. The hydraulic actuator rod removal device of claim 4, wherein: A plurality of lightening grooves (16) are formed on the bottom plate (1).

6. The hydraulic actuator rod removal device of claim 4, wherein: The oil receiving disc (4) is provided with a handle (41) at both ends.

7. The hydraulic actuator rod removal device of claim 4, wherein: The bottom surface of the oil receiving disc (4) is provided with an oil discharge port (42).

8. The hydraulic actuator rod removal device of claim 7, wherein: The oil discharge port (42) is provided with a filter joint (43), the filter joint (43) is connected with a control valve (44), and the valve port of the control valve (44) is provided with a plug (45).

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