Piston disassembling tool

Abstract

The utility model provides a piston disassembling tool, and aims to solve the technical problems that the piston disassembling process of an existing reverse thrust lock is low in efficiency, the piston is easy to damage, and people are easy to hurt. The positioning seat assembly is detachably connected to the lock shell. The moving assembly comprises a guide rod and a mounting column. The guide rod penetrates through and is in threaded connection with the positioning seat assembly and then is connected with the mounting column. The abutting assembly is coaxially connected with the guide rod, is matched with the limiting clamping ring, and is used for the abutting assembly to pass through the center of the limiting clamping ring. When the positioning seat assembly is positioned and installed on the lock shell, the guide rod is rotated to drive the abutting assembly to move towards the interior of the lock shell, and the abutting assembly penetrates through the limiting clamping ring to abut against the piston to move inwards. The abutting assembly abuts against the piston to move towards the interior of the lock shell, then the piston is decomposed from the interior of the lock shell, and high efficiency and safety are achieved. And meanwhile, rotation of the abutting assembly is limited through the thrust ball bearing, and the situation that the abutting assembly rotates relative to the frame body along with rotation of the guide rod, and the piston is damaged is avoided.

Description

Technical Field

[0001] The present application relates to the field of aircraft thrust reverser lock maintenance, and particularly to a piston disassembly tooling. Background Art

[0002] During the maintenance of the thrust reverser lock of a civil airliner, for the convenience of operation, it is necessary to first disassemble the piston from the thrust reverser lock. Generally, the piston is installed in the thrust reverser lock through a limit snap ring, and there is a powerful spring in a compressed state below it. During the process of removing the piston from the thrust reverser lock, if the piston is forcibly removed from the lock housing without using a tooling, not only is the operation difficult and it is easy to cause damage to parts, but also under the action of the release of the elastic force of the powerful spring, if there is a slight carelessness in the operation, the piston is extremely likely to suddenly pop out from the lock housing, causing injury to personnel. Utility Model Content

[0003] The utility model provides a piston disassembly tooling to solve the problems raised in the above background art, so as to help maintenance personnel successfully complete the maintenance work.

[0004] A piston disassembly tooling for disassembling or installing a piston crimped by a limit snap ring in a lock housing, characterized in that: the piston disassembly tooling includes:

[0005] A positioning seat assembly detachably connected to the lock housing;

[0006] A moving assembly including a guide rod and a mounting post; after the guide rod penetrates and is threadedly connected to the positioning seat assembly, it is connected to the mounting post;

[0007] An abutting assembly coaxially connected to the guide rod and configured to match the limit snap ring, for the abutting assembly to pass through the center of the limit snap ring;

[0008] When the positioning seat assembly is positioned and installed on the lock housing, rotate the guide rod so that the guide rod drives the abutting assembly to move towards the inside of the lock housing, pass through the limit snap ring to abut the piston and move it inward.

[0009] Further, the lock housing is provided with a receiving groove opening inward from the top, the groove wall of the receiving groove is provided with a limit groove matching the piston, and the limit groove is fitted with a limit snap ring; one end of the piston is sleeved with an incompletely compressed spring, and the other end is crimped by the limit snap ring.

[0010] Further, the positioning seat assembly includes a frame body and a fixed rod group; the frame body is fixed to the lock housing through the fixed rod group.

[0011] Further, the frame body includes a horizontal plate and a group of vertical plates; each vertical plate is connected to the outer edge of the horizontal plate along the circumferential direction of the horizontal plate and extends in the same direction; each vertical plate is provided with a positioning through hole matching the fixing rod along its extending direction.

[0012] Further, the lock housing is provided with an installation hole matching the positioning through hole for realizing the quick positioning of the frame body at the lock housing.

[0013] Further, a force adding rod is installed at one end of the guiding rod; the force adding rod can be arranged on the outer wall of the guiding rod along the circumferential direction of the guiding rod.

[0014] Further, the guiding rod includes a guiding rod body and a limiting plate; the force adding rod is installed at one end of the guiding rod body, and the other end of the guiding rod body is connected with the limiting plate in a matching manner for limiting the moving distance of the guiding rod in the direction outside the frame body.

[0015] Further, the installation column is connected with the guiding rod and includes a connecting part and an extending part;

[0016] One end of the connecting part is connected to the limiting plate, and a thrust ball bearing is sleeved on the outer wall of the connecting part, so that the connecting part does not rotate with the rotation of the guiding part;

[0017] The extending part is connected to the other end of the connecting part; an annular clamping groove is formed on the outer wall of the extending part along its circumferential direction.

[0018] Further, the abutting assembly includes an abutting column and a convex ring;

[0019] One end of the abutting column is provided with an installation groove matching the extending part, and the other end is provided in a matching manner with the limiting clamping ring;

[0020] The convex ring is sleeved on the top end of the outer wall of the abutting column;

[0021] When the abutting assembly is sleeved on the outer wall of the extending part until the end face of its convex ring abuts against the thrust ball bearing, a fastening through hole matching the annular groove is formed on the side wall of the convex ring.

[0022] Compared with the prior art, the beneficial effects of the utility model are:

[0023] Through the cooperation of the positioning through holes provided in the frame body and the mounting holes at the lock housing, the rapid positioning of the frame body at the installation position of the lock housing is achieved, which is convenient and fast. Then, the abutting assembly assembled on the frame body abuts against the piston and moves it into the lock housing. This not only enables technicians to efficiently disassemble the piston, but also prevents the piston from suddenly popping out of the lock housing and causing injury to personnel. At the same time, the rotation of the abutting assembly is restricted by a thrust ball bearing, preventing the abutting assembly from rotating relative to the frame body as the guide rod rotates during the process of abutting against the piston and moving it into the lock housing, thus damaging the piston. Description of the Drawings

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0025] Figure 1 Structural schematic diagram of a piston disassembly tooling for an embodiment of the present application;

[0026] Figure 2 Side view of the frame body of a piston disassembly tooling for an embodiment of the present application;

[0027] Figure 3 Top view of the cross plate of a piston disassembly tooling for an embodiment of the present application;

[0028] Figure 4 Side view of the guide rod of a piston disassembly tooling for an embodiment of the present application;

[0029] Figure 5 Cross-sectional view of the limiting assembly of a piston disassembly tooling for an embodiment of the present application;

[0030] Figure 6 Cross-sectional view showing the cooperation of a piston disassembly tooling for an embodiment of the present application with a reverse push lock housing.

[0031] Reference Numerals:

[0032] 1. Frame body; 10. Cross plate; 100. Positioning through hole; 11. Vertical plate;

[0033] 2. Moving assembly; 20. Guide rod; 21. Limiting plate; 22. Connecting part; 23. Inserting part; 230. Annular groove; 3. Force adding rod; 4. Thrust ball bearing;

[0034] 5. Abutting assembly; 50. Convex ring; 500. Fastening through hole; 501. Fastening screw; 51. Abutting column; 52. Installation groove;

[0035] 60. Lock housing; 600. Accommodating groove; 601. Mounting hole; 61. Limit snap ring; 62. Spring; 63. Piston. Detailed implementation manner

[0036] In the following text, only some exemplary embodiments are simply described. As those skilled in the art can recognize, the described embodiments can be modified in various different ways without departing from the spirit or scope of the present invention. Therefore, the drawings and the description are considered to be exemplary in nature rather than restrictive.

[0037] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "inner", "outer", "clockwise", "counterclockwise", "circumferential", etc. are based on the orientation or positional relationships shown in the drawings, or the orientation or positional relationships when the product of the present invention is normally placed, or the orientation or positional relationships commonly understood by those skilled in the art. It 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 thus should not be construed as a limitation to the present invention.

[0038] In the present invention, unless otherwise clearly defined and limited, the terms "mount", "connect", "couple", "fix", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] The following disclosure provides many different embodiments or examples for implementing different structures of the present invention. To simplify the disclosure of the present invention, the components and settings of specific examples are described below. Of course, they are only examples and are not intended to limit the present invention. In addition, the present invention may repeat reference numerals in different examples, and this repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments discussed.

[0040] The embodiments of the present invention will be described in detail below with reference to the drawings.

[0041] During the repair of the reverse thrust lock, it is necessary to first disassemble the piston 63 assembled in the lock housing 60 for easy inspection. Among them, the lock housing 60 of the reverse thrust lock is provided with a receiving groove 600 opening inward from the top. The lock housing 60 outside the receiving groove 600 is provided with a set of mounting holes. After the spring 62 is sleeved on one end of the piston 63, it is placed in the receiving groove 600. In order to stably install the piston 63 in the receiving groove 600, a limiting groove matching the piston 63 is provided on the groove wall of the receiving groove 600, and the limiting snap ring 61 is installed in the limiting groove matching the piston 63, that is, when the limiting snap ring 61 is installed in the limiting groove, the other end of the piston 63 can abut against the limiting snap ring 61. At this time, the spring 62 provided at one end of the piston 63 can be partially compressed.

[0042] An embodiment of the present invention provides a piston disassembly tooling. Please refer to Figures 1-6 . The piston disassembly tooling is provided to match the lock housing 60 and includes a positioning seat assembly, a moving assembly 2 and an abutting assembly 5.

[0043] Specifically,

[0044] The positioning seat assembly includes a frame body 1 and a set of fixing rods. The frame body 1 is fixedly positioned at the lock housing 60 through the matching installation of the set of fixing rods at the installation holes.

[0045] The frame body 1 includes a horizontal plate 10 and a set of vertical plates. Preferably, there are two vertical plates 11. The two vertical plates 11 are arranged on the outer edge of the horizontal plate 10 and extend in the same direction. Each vertical plate 11 is provided with a positioning through hole 100 matching the installation hole 601 along its extending direction, that is, when the frame body 1 is connected to the outside of the lock housing 60, each positioning through hole 100 can be aligned with the installation hole 601. After the fixing rod passes through the positioning through hole 100 into the installation hole 601, the connection between the positioning through hole 100 and the installation hole 601 realizes the fixation of the frame body 1 and the lock housing 60.

[0046] The moving assembly 2 includes a guide rod 20 and a mounting post. One end of the guide rod 20 is exposed outside the frame body 1, and its other end penetrates and is threadedly connected to the frame body 1 and then connected to the mounting post.

[0047] The guide rod 20 penetrates the horizontal plate 10 to match the limiting snap ring 61 and is threadedly connected to the horizontal plate 10, that is, when the frame body 1 is fixed to the lock housing 60, the guide rod 20 and the limiting snap ring 61 are coaxially arranged. A force-applying rod 3 is installed at one end of the guide rod 20. The force-applying rod 3 can be arranged on the outer wall of the guide rod 20 along the circumferential direction of the guide rod 20. The guide rod 20 rotates in the same direction by rotating the force-applying rod 3 clockwise or counterclockwise. The other end of the guide rod 20 is provided with a limiting plate 21 in a matching manner, that is, the diameter of the limiting plate 21 is larger than the diameter of the guide rod 20, which is used to limit the moving distance of the guide rod 20 moving outward from the frame body 1, so that the guide rod 20 is not easily separated from the frame body 1 during use.

[0048] The mounting post is installed at the other end of the guide rod 20 and includes a connecting portion 22 and an extending portion 23. The connecting portion 22 is connected to the limiting plate 21, and a thrust ball bearing 4 is sleeved on its outer wall to ensure that the connecting portion 22 does not rotate during the rotation of the guide rod 20. The other end of the connecting portion 22 is connected to an extending portion 23. An annular clamping groove 230 is formed on the outer wall of the extending portion 23 along its circumferential direction.

[0049] The abutting assembly 5 is used to abut against the piston 63 and move into the lock housing 60. One end of the abutting assembly 5 is coaxially connected to the moving assembly 2, so that it rotates in the same direction relative to the frame body 1 along with the rotation of the guide rod 20, but does not rotate relative to the guide rod 20, to prevent the abutting assembly 5 from damaging the piston 63 when rotating along with the guide rod 20. The abutting assembly 5 is provided to match the limiting snap ring 61, so that the abutting assembly 5 can pass through the limiting snap ring 61. The abutting assembly 5 includes an abutting post 51 and a convex ring 50.

[0050] The convex ring 50 is sleeved on the top end of the outer wall of the abutting post 51. An installation groove 52 matching the extending portion 23 is formed at one end of the abutting post 51, so that the extending portion 23 can extend into the installation groove 52. When the abutting assembly 5 is sleeved on the outer wall of the extending portion 23 until the end face of its convex ring 50 abuts against the thrust ball bearing 4, a fastening through hole 500 matching the annular groove 230 is formed on the side wall of the convex ring 50, that is, the fastening through hole 500 can be aligned with the annular groove 230 at this time. The fastening screw 501 is passed through the fastening through hole 500 to abut against the annular groove 230, and the installation of the abutting assembly 5 at the mounting post is realized by the installation of the fastening screw 501 at the convex ring 50. The other end of the abutting post 51 is provided to match the limiting snap ring 61, that is, the end diameter of the other end of the abutting post is equal to or slightly smaller than the inner diameter of the limiting snap ring 61, so that the abutting post 51 can pass through the limiting snap ring 61.

[0051] Based on the above embodiments, the working principle of the present application is (taking the example that turning the force-applying rod 3 clockwise can make the moving assembly 2 move towards the direction close to the lock housing 60):

[0052] (1) Disassemble the piston 63 from the lock housing 60: By aligning the installation hole 601 and the positioning through hole 100, the installation position of the frame body 1 at the lock housing 60 can be quickly positioned, and the frame body 1 is quickly fixed to the lock housing 60 through the fixing rod. Turn the force-applying rod 3 clockwise, so that the moving assembly 2 rotates in the same direction and moves towards the direction close to the lock housing at the same time, thereby driving the abutting assembly 5 to move in the same direction, so as to push the abutting post 51 to move into the receiving groove 600, so that the limiting snap ring 61 can be taken out. Then turn the force-applying rod 3 counterclockwise, so that the abutting post 51 moves away from the lock housing. At this time, while the spring 62 gradually returns to its free length, the piston 63 also moves towards the outside direction of the lock housing until the spring 62 returns to its free length and the spring force disappears, and the piston 63 and the spring 62 are taken out, and the disassembly is completed.

[0053] (2) Install the piston in the lock housing 60: Place the piston 63 sleeved with a spring 62 into the receiving groove 600, and quickly fix the frame body 1 to the lock housing 60 through a fixing rod. Rotate the force-applying rod 3 clockwise. While the moving assembly 2 rotates in the same direction, it moves towards the lock housing, thereby driving the abutting assembly 5 to move in the same direction and pressing the piston 63 into the receiving groove 600 until the limit groove is completely exposed. At this time, by installing the limit snap ring 61 in the limit groove, the piston 63 can be stably installed in the lock housing 60. Subsequently, rotate the force-applying rod 3 counterclockwise, the abutting column 51 moves out of the receiving groove, remove the fixing rod, and take off the piston disassembly tooling.

[0054] Based on the above embodiments, the advantages of the present application are as follows:

[0055] Through the cooperation of the positioning through hole 100 provided on the frame body 1 and the mounting hole 601 on the lock housing, the quick positioning of the installation position of the frame body 1 on the lock housing is realized, which is convenient and fast. Then, the abutting assembly 5 assembled on the frame body 1 abuts against the piston 63 and moves it into the lock housing 60, which not only enables technicians to efficiently disassemble the piston 63, but also avoids the piston 63 suddenly popping out of the lock housing 60 and causing injury to personnel. At the same time, the rotation of the abutting assembly 5 is restricted by the thrust ball bearing 4, avoiding the abutting assembly 5 rotating relative to the frame body 1 with the rotation of the guide rod 20 during the process of abutting the piston 63 and moving it into the lock housing 60, and damaging the piston 63.

Claims

1. A piston disassembly tooling, which is used for the disassembly or installation of a piston crimped by a limit snap ring in a lock housing, and is characterized in that: The piston disassembly tooling includes: A positioning seat assembly detachably connected to the lock housing; A moving assembly including a guide rod and a mounting post; after the guide rod penetrates and is threadedly connected to the positioning seat assembly, it is connected to the mounting post; An abutting assembly coaxially connected to the guide rod and configured to match the limit snap ring, for the abutting assembly to pass through the center of the limit snap ring; When the positioning seat assembly is positioned and installed on the lock housing, rotate the guide rod to drive the abutting assembly to move inward into the lock housing through the limit snap ring to abut against the piston and move it inward.

2. The piston disassembly tooling according to claim 1, wherein: The lock housing is provided with a receiving groove opening inward from the top end, and the groove wall of the receiving groove is provided with a limit groove matching the piston, and a limit snap ring is fitted in the limit groove; the piston is arranged coaxially with the receiving groove; one end of the piston is sleeved with an incompletely compressed spring, and the other end is pressed by the limit snap ring.

3. The piston disassembly tooling according to claim 2, wherein: The positioning seat assembly includes a frame body and a fixed rod group; the frame body is fixed to the lock housing through the fixed rod group.

4. The piston disassembly tooling according to claim 3, characterized in that: The frame body includes a horizontal plate and a group of vertical plates; each vertical plate is connected to the outer edge of the horizontal plate along the circumference of the horizontal plate and extends in the same direction; each vertical plate is provided with a positioning through hole matching the fixed rod along its extending direction.

5. The piston disassembly tooling according to claim 4, wherein: The lock housing is provided with a mounting hole matching the positioning through hole for quickly positioning the frame body at the lock housing.

6. The piston disassembly tooling according to claim 1, wherein: One end of the guide rod is installed with a force applying rod; the force applying rod can be arranged on the outer wall of the guide rod along the circumference of the guide rod.

7. The piston disassembly tooling according to claim 6, wherein: The guide rod includes a guide rod body and a limit plate; one end of the guide rod body is installed with the force applying rod, and the other end is connected with the limit plate in a matching manner to limit the moving distance of the guide rod in the outer direction of the frame body.

8. The piston disassembly tooling according to claim 7, characterized in that: The mounting post is connected to the guide rod and includes a connecting portion and an extending portion; The connecting portion, one end of which is connected to the limit plate, and a thrust ball bearing is sleeved on its outer wall so that the connecting portion does not rotate with the rotation of the guide rod; The extending portion is connected to the other end of the connecting portion; an annular card slot is provided on the outer wall of the extending portion along its circumference.

9. The piston disassembly tooling according to claim 8, wherein: The abutting assembly includes an abutting post and a convex ring; The abutting post, one end of which is provided with a mounting groove matching the extending portion, and the other end is configured to match the limit snap ring; The convex ring is sleeved on the top end of the outer wall of the abutting post; When the abutting assembly is sleeved on the outer wall of the extending portion until the end face of its convex ring abuts against the thrust ball bearing, a fastening through hole matching the annular groove is provided on the side wall of the convex ring.

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