A detachable cylinder

Abstract

The utility model provides a kind of convenient disassembly type cylinder, comprising: cylinder one, connection mechanism is arranged on the cylinder one, cylinder two is detachably connected on the cylinder one by connection mechanism, sealing ring is arranged between the cylinder one and cylinder two, the right end of the cylinder one is provided with end cover, compared with prior art, the utility model has the beneficial effects as follows: by setting connection mechanism, ball loses limit by moving limit ring, then pull cylinder two to make it separate from cylinder one, and then complete convenient disassembly, without completely disassembling entire cylinder body, only need to separate middle part to directly access internal components such as piston, sealing element, rod element etc., greatly shorten maintenance time, by setting end cover with lubricating structure, reduce the wear and tear of contact surface, prolong the service life of piston rod and dust cover.

Description

Technical Field

[0001] This utility model belongs to the field of hydraulic cylinders, and specifically relates to a cylinder that is easy to disassemble. Background Technology

[0002] The hydraulic cylinder of an aircraft landing gear is one of the core components of the landing gear retraction system. It primarily drives the piston via hydraulic pressure to extend and retract the landing gear. Hydraulic cylinders are typically made of high-strength alloy steel or titanium alloy, with precision machining to ensure a tight fit with the piston. Their surfaces undergo special treatment to enhance wear resistance and corrosion resistance. However, the inconvenience of disassembling hydraulic cylinders significantly increases maintenance time. This is mainly due to their complex structural design and difficult assembly / disassembly. Hydraulic cylinders are usually designed as integral or non-modular units, requiring complete disassembly for partial damage. Furthermore, the cylinder is connected to the piston rod, end caps, and other components using interference fits or high-strength bolts, requiring specialized tools and significant time for disassembly. Therefore, we aim to design a cylinder that allows for easy disassembly to solve this problem. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a convenient disassembly cylinder to solve the problems mentioned in the background art.

[0004] This utility model is achieved through the following technical solution: a convenient disassembly cylinder, comprising: a cylinder one, a connecting mechanism provided on the cylinder one, a cylinder two detachably connected to the cylinder one through the connecting mechanism, a sealing ring provided between the cylinder one and the cylinder two, and an end cap provided at the right end of the cylinder one.

[0005] The connecting mechanism includes a through groove, which is opened at the left end of cylinder one. A ball is arranged inside the through groove. A fixing ring is fixedly sleeved on the outside of cylinder one. A limit ring is slidably sleeved on the outside of cylinder one. A spring is also arranged on the outside of cylinder one. By setting up the connecting mechanism, the ball is made to lose its limit by moving the limit ring, and then cylinder two is pulled to separate from cylinder one, thereby completing convenient disassembly.

[0006] In a preferred embodiment, the front cross-section of the through groove is a U-shaped structure that is wider at the top and narrower at the bottom to prevent the balls from falling into the interior of the cylinder.

[0007] In a preferred embodiment, a limiting groove is provided on the outer side of the second cylinder. The limiting groove is an arc-shaped groove that matches the curvature of the ball, and the limiting groove is engaged with the ball.

[0008] In a preferred embodiment, the limiting ring and the fixing ring are elastically connected by a spring to prevent the limiting ring from shifting.

[0009] In a preferred embodiment, the inner side of the limiting ring is provided with an annular groove to provide space for ball displacement.

[0010] In a preferred embodiment, the end cap has an oil cavity inside, which is filled with polyester fiber cotton for storing lubricating oil. The upper end of the end cap has an oil injection hole, and a sealing plug is screwed into the oil injection hole. The end cap also has an oil seepage hole. By providing an end cap with a lubrication structure, wear on the contact surfaces is reduced, and the service life of the piston rod and dust cover is extended.

[0011] In a preferred embodiment, the upper end of the end cap is provided with a connecting ring groove, and a dust cover is fixedly connected to the inner side of the connecting ring groove.

[0012] As a preferred embodiment, the dust cover is made of a highly wear-resistant polyurethane material to prevent dust from being carried into the interior of the cylinder by the piston rod.

[0013] After adopting the above technical solution, the beneficial effects of this utility model are:

[0014] 1. By setting up a connecting mechanism, the ball bearings are made to lose their limit by using a moving limit ring, and then the second cylinder is pulled to separate it from the first cylinder, thus completing the convenient disassembly. It is not necessary to completely disassemble the entire cylinder body. Only the middle part needs to be separated to directly access the internal components such as pistons, seals, rods, etc., which greatly shortens the maintenance time.

[0015] 2. By setting end caps with lubrication structures, wear on the contact surfaces is reduced, extending the service life of the piston rod and dust cover. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a perspective view of the overall structure of a conveniently disassembled cylinder according to the present invention.

[0018] Figure 2 This is a partial structural cross-sectional view of a conveniently disassembled cylinder according to the present invention.

[0019] Figure 3 This utility model provides a convenient disassembly cylinder. Figure 2 Enlarged view of part A of the structure.

[0020] Figure 4 This is a partial perspective view of a convenient disassembly cylinder connection mechanism according to the present invention.

[0021] Figure 5 This is a cross-sectional view of the end cap of a cylinder barrel that is easy to disassemble according to this utility model.

[0022] In the diagram, 1-Cylinder 1, 2-Connecting mechanism, 3-Cylinder 2, 4-Sealing ring, 5-End cap;

[0023] 21-Through groove, 22-Ball, 23-Fixing ring, 24-Limiting ring, 241-Ring groove, 25-Spring;

[0024] 51-Oil cavity, 52-Oil injection hole, 53-Sealing plug, 54-Oil leakage hole, 55-Connecting ring groove, 56-Dust cover. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figures 1-4 As the first embodiment of this utility model:

[0027] A convenient disassembly cylinder includes: cylinder 1, a connecting mechanism 2 is provided on cylinder 1, cylinder 2 3 is detachably connected to cylinder 1 through the connecting mechanism 2, a sealing ring 4 is provided between cylinder 1 and cylinder 2 3, and an end cap 5 is provided at the right end of cylinder 1.

[0028] The connecting mechanism 2 includes a through groove 21, which is located at the left end of cylinder 1. A ball bearing 22 is installed inside the through groove 21. A fixing ring 23 is fixedly sleeved on the outside of cylinder 1. A limiting ring 24 is slidably sleeved on the outside of cylinder 1. A spring 25 is also installed on the outside of cylinder 1. By setting the connecting mechanism 2, the ball bearing 22 is made to lose its limit by moving the limiting ring 24, and then cylinder 23 is pulled to separate it from cylinder 1, thereby completing the convenient disassembly.

[0029] The front cross-section of the through groove 21 is a U-shaped structure that is wider at the top and narrower at the bottom (the width of the bottom of the U-shape is smaller than the diameter of the ball) to prevent the ball 22 from falling into the interior of the cylinder 1.

[0030] A limiting groove is provided on the outer side of cylinder 23. The limiting groove is an arc-shaped groove that matches the curvature of ball 22 and fits into ball 22.

[0031] The limiting ring 24 and the fixed ring 23 are elastically connected by a spring 25 to prevent the limiting ring 24 from being displaced.

[0032] The inner side of the limiting ring 24 has an annular groove 241 to provide displacement space for the ball 22.

[0033] Specifically, when the cylinder needs to be disassembled, the limiting ring 24 is first moved to the right. During the movement of the limiting ring 24, the spring 25 is compressed and deformed. When the inner groove 241 of the limiting ring 24 is displaced to align with the ball 22, the cylinder 3 is pulled to the left. During the displacement, the cylinder 3 squeezes the ball 22 and causes it to move into the inner groove 241. When the ball 22 is displaced to separate from the outer groove of the cylinder 3, the cylinder 3 loses its limiting position, thus completing the convenient disassembly from the cylinder 1, thereby shortening the maintenance time.

[0034] Please see Figure 1 as well as Figure 5 As a second embodiment of this utility model:

[0035] The end cap 5 has an oil cavity 51 inside, which is filled with polyester fiber cotton for storing lubricating oil. The upper end of the end cap 5 has an oil injection hole 52, and a sealing plug 53 is screwed into the oil injection hole 52. The end cap 5 also has an oil seepage hole 54 inside. By setting the end cap 5 with a lubrication structure, the wear of the contact surface is reduced, and the service life of the piston rod and dust cover 56 is extended.

[0036] The upper end of the end cap 5 is provided with a connecting ring groove 55, and a dust cover 56 is fixedly connected to the inner side of the connecting ring groove 55.

[0037] The dust cover 56 is made of a highly wear-resistant polyurethane material to prevent dust from being carried into the cylinder 1 by the piston rod.

[0038] Based on the above embodiments, further, during the piston rod displacement process, the dust cover 56 tightly fits the piston rod surface. When the piston rod reciprocates, the edge of the dust cover 56 scrapes away dust or debris adhering to the rod surface, preventing them from entering the cylinder 1 with the piston rod retraction. Since friction will cause wear on the contact surface of the piston rod and the dust cover 56, the sealing plug 53 can be removed and lubricating oil can be injected into the oil injection hole 52. The polyester fiber cotton in the oil cavity 51 absorbs the lubricating oil through capillary action and slowly releases it through the oil seepage hole 54 to avoid excessive seepage, ultimately achieving a stable and controllable long-term oil supply effect. The lubricating oil that migrates into the hollow interior then comes into contact with the piston rod, reducing wear on the contact surface and extending the service life of the piston rod and the dust cover 56.

[0039] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A conveniently disassembled cylinder barrel, comprising: Cylinder 1 (1), characterized in that a connecting mechanism (2) is provided on the cylinder 1 (1), and cylinder 2 (3) is detachably connected to the cylinder 1 (1) through the connecting mechanism (2), a sealing ring (4) is provided between the cylinder 1 (1) and the cylinder 2 (3), and an end cap (5) is provided at the right end of the cylinder 1 (1); The connecting mechanism (2) includes a through groove (21), which is opened at the left end of the cylinder (1). A ball (22) is provided inside the through groove (21). A fixing ring (23) is fixedly sleeved on the outside of the cylinder (1). A limit ring (24) is slidably sleeved on the outside of the cylinder (1). A spring (25) is also provided on the outside of the cylinder (1).

2. The easily disassembled cylinder as described in claim 1, characterized in that: The front cross-section of the through groove (21) is a U-shaped structure that is wider at the top and narrower at the bottom to prevent the balls (22) from falling into the interior of the cylinder (1).

3. The easily disassembled cylinder as described in claim 1, characterized in that: The outer side of the cylinder (3) is provided with a limiting groove, which is an arc-shaped groove that matches the curvature of the ball (22) and the limiting groove is engaged with the ball (22).

4. The easily disassembled cylinder as described in claim 1, characterized in that: The limiting ring (24) and the fixing ring (23) are elastically connected by a spring (25) to prevent the limiting ring (24) from being displaced.

5. A conveniently disassembled cylinder as described in claim 4, characterized in that: The inner side of the limiting ring (24) is provided with an annular groove (241) to provide displacement space for the ball (22).

6. The easily disassembled cylinder barrel as described in claim 1, characterized in that: The end cap (5) has an oil cavity (51) inside, which is filled with polyester fiber cotton for storing lubricating oil. The upper end of the end cap (5) has an oil injection hole (52), and a sealing plug (53) is screwed into the oil injection hole (52) through a thread. The end cap (5) also has an oil seepage hole (54).

7. A conveniently disassembled cylinder barrel as described in claim 6, characterized in that: The upper end of the end cap (5) is provided with a connecting ring groove (55), and a dust cover (56) is fixedly connected to the inner side of the connecting ring groove (55).

8. A conveniently disassembled cylinder barrel as described in claim 7, characterized in that: The dust cover (56) is made of a highly wear-resistant polyurethane material to prevent dust from being carried into the cylinder (1) by the piston rod.

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