Cylinder convenient for lubricating piston rod

Abstract

The utility model discloses an air cylinder facilitating lubrication of a piston rod, and relates to the technical field of air cylinders. The air cylinder comprises an air cylinder body. The air cylinder body is started to drive the extrusion assembly to move, lubricating oil in the extrusion assembly can be pushed in the retraction process of the extrusion assembly, and then when the lubricating oil in the extrusion assembly is pushed into the lubricating assembly, the lubricating oil makes contact with the outer surface of a piston rod in the air cylinder body; then the lubricating oil enters the backflow assembly, under the action of the backflow assembly, the lubricating oil in the backflow assembly can be slowly pushed to enter the lubricating assembly, the lubricating oil in the backflow assembly flows into the extrusion assembly, and in the flowing process, the lubricating oil can make full contact with a piston rod in the air cylinder body; and therefore, the air cylinder can be fully lubricated and is prevented from being abraded to influence the use of the air cylinder body.

Description

Technical Field

[0001] The utility model belongs to the technical field of cylinders. Specifically, it particularly relates to a cylinder facilitating the lubrication of a piston rod. Background Art

[0002] A cylinder refers to a cylindrical metal component that guides a piston to perform linear reciprocating motion within the cylinder. Air expands in the engine cylinder to convert heat energy into mechanical energy; gas is compressed by the piston in the compressor cylinder to increase pressure.

[0003] When the cylinder is working, air inlet and outlet holes are generally arranged at both ends of the cylinder block, so that gas can enter the interior of the cylinder block, apply air pressure to the piston that fits against its inner wall, and enable the piston to drive the piston rod to move. In the prior art, the piston rod is generally sealed by the setting of a guide sleeve and an internal sealing ring. However, after long-term use, the lubricating oil between the sealing ring and the piston rod is insufficient, which easily causes wear and affects the use of the cylinder.

[0004] Regarding the problems in the related art, no effective solution has been proposed yet. Summary of the Utility Model

[0005] Regarding the problems in the related art, the utility model proposes a cylinder facilitating the lubrication of a piston rod to overcome the above-mentioned technical problems existing in the prior related art.

[0006] To solve the above technical problems, the utility model is realized through the following technical solutions:

[0007] The utility model provides a cylinder facilitating the lubrication of a piston rod, including a cylinder body:

[0008] A sealing assembly, an extrusion assembly, a lubrication assembly, and a reflux assembly are respectively arranged on the cylinder body;

[0009] For the sealing assembly, its inner side is hermetically connected to the outer surface of the lubrication assembly, so that the sealing assembly seals the lubricating oil inside the lubrication assembly;

[0010] For the extrusion assembly, its interior is in communication with the interior of the lubrication assembly, so that the extrusion assembly adds lubricating oil to the interior of the lubrication assembly;

[0011] For the reflux assembly, its interior is in communication with the interior of the lubrication assembly, so that the reflux assembly pushes the lubricating oil inside the lubrication assembly to flow back for the lubricating oil to reciprocate and circulate inside the lubrication assembly.

[0012] Further, the sealing assembly includes a mounting groove which is opened on one side of the cylinder body. Two guiding sleeves are fixedly installed inside the mounting groove. Sealing rings are arranged inside both of the two guiding sleeves. A fixing block is fixedly installed at the top end of the mounting groove.

[0013] Further, the extrusion assembly includes an oil storage tank and a pressing block. The outer surface of the oil storage tank is fixedly installed inside the cylinder body. The outer surface of the pressing block is fixedly installed at the telescopic end of the cylinder body. An oil outlet pipe is fixedly connected inside the oil storage tank. One end of the oil outlet pipe is communicated with the inside of the lubricating assembly;

[0014] A first piston is slidably arranged inside the oil storage tank. A push rod is fixedly connected to the top end of the first piston. A pressing plate is fixedly connected to the top end of the push rod.

[0015] Further, the extrusion assembly further includes an oil filling pipe and a limiting rod. The inside of the oil filling pipe is communicated with the inside of the oil storage tank. One end of the limiting rod is fixedly connected to the bottom end of the pressing plate. A first spring is arranged outside the limiting rod. One end of the first spring is fixedly connected to the top end of the oil storage tank.

[0016] Further, the lubricating assembly includes a mounting ring. The outer surface of the mounting ring is arranged in fit with one side of the guiding sleeve. An oil groove is opened inside the mounting ring. The inside of the oil groove is communicated with the inside of the oil outlet pipe. The inside of the oil groove is communicated with the inside of the reflux assembly.

[0017] Further, the reflux assembly includes a reflux tank. The outer surface of the reflux tank is fixedly installed inside the cylinder body. A reflux pipe is fixedly connected inside the reflux tank. The inside of the reflux pipe is communicated with the inside of the oil groove;

[0018] A second piston is slidably arranged inside the reflux tank. A guiding rod is fixedly connected to one side of the second piston. A second spring is fixedly connected to one side of the second piston. One end of the second spring is fixedly connected to the inner wall of the reflux tank.

[0019] Further, a sealing groove is opened on the outer surface of the mounting ring. A sealing gasket is arranged inside the sealing groove. The bottom end of the sealing gasket is fixedly installed inside the guiding sleeve.

[0020] The utility model has the following beneficial effects:

[0021] 1. By starting the cylinder body of the present utility model, the extrusion assembly fixedly installed at its telescopic end can be driven. During its retraction process, the lubricating oil inside the extrusion assembly can be pushed. Since the inside of the extrusion assembly is connected to the inside of the lubricating assembly, and the inside of the lubricating assembly is connected to the inside of the reflux assembly, when the lubricating oil inside the extrusion assembly is pushed into the inside of the lubricating assembly, it can contact the outer surface of the piston rod inside the cylinder body, and then enter the inside of the reflux assembly. Under the action of the reflux assembly itself, the lubricating oil inside it can be slowly pushed into the inside of the lubricating assembly, and the lubricating oil inside it can flow into the inside of the extrusion assembly. During its flow process, it can make full contact with the piston rod inside the cylinder body, thereby being able to lubricate it sufficiently and avoid its wear, which affects the use of the cylinder body.

[0022] 2. The lubricating oil flowing inside the oil groove enters the inside of the reflux pipe connected to its inside, enabling it to enter the inside of the reflux tank, and can push the second piston slidably arranged inside it. When the second piston moves, it can drive the guide rod fixedly connected to one side of it to move, and at the same time can compress the second spring fixedly connected to one side of it, so that it can push the second piston to reset. When the second piston resets, it can push the lubricating oil inside the reflux tank through the reflux pipe into the inside of the oil groove, and then return it to the inside of the storage tank through the oil outlet pipe, thereby enabling the lubricating oil to flow reciprocally, facilitating its full contact with the piston rod inside the cylinder body.

[0023] Of course, it is not necessary for any product implementing the present utility model to achieve all the above-mentioned advantages simultaneously. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0025] Figure 1 It is a three-dimensional structural schematic diagram of the present utility model;

[0026] Figure 2 It is an exploded structural schematic diagram of the sealing assembly of the present utility model;

[0027] Figure 3 It is an internal structural schematic diagram of the extrusion assembly of the present utility model;

[0028] Figure 4 For the present utility model Figure 3 It is an enlarged schematic diagram of the partial structure at A in

[0029] Figure 5 Schematic diagram of the internal structure of the reflux assembly of the present utility model;

[0030] Figure 6 of the present utility model Figure 5 Enlarged schematic diagram of the partial structure at position B in the present utility model.

[0031] In the drawings, the components represented by each reference numeral are listed as follows:

[0032] 1. Cylinder body; 2. Sealing assembly; 201. Installation groove; 202. Guide sleeve; 203. Sealing ring; 204. Fixed block; 3. Extrusion assembly; 301. Oil storage tank; 302. Pressing block; 303. Oil outlet pipe; 304. First piston; 305. Push rod; 306. Pressing plate; 307. Oil filling pipe; 308. Limit rod; 309. First spring; 4. Lubrication assembly; 401. Installation ring; 402. Oil groove; 5. Reflux assembly; 501. Reflux tank; 502. Reflux pipe; 503. Second piston; 504. Guide rod; 505. Second spring; 6. Sealing groove; 7. Sealing gasket. Detailed implementation manners

[0033] Next, the technical solutions in the embodiments of the utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the utility model.

[0034] In the description of the present utility model, it should be understood that the terms "opening", "upper", "lower", "top", "middle", "inner", etc. indicating orientations or positional relationships are only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the components or elements 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 utility model.

[0035] Please refer to Figures 1-6 as shown, the present utility model is a cylinder facilitating lubrication of the piston rod, including a cylinder body 1:

[0036] The cylinder body 1 is respectively provided with a sealing assembly 2, an extrusion assembly 3, a lubrication assembly 4, and a reflux assembly 5;

[0037] The sealing assembly 2 is hermetically connected to the outer surface of the lubrication assembly 4 on the inner side, so that the sealing assembly 2 seals the lubricating oil inside the lubrication assembly 4;

[0038] The extrusion assembly 3 has its interior communicating with the interior of the lubrication assembly 4 so that the extrusion assembly 3 adds lubricating oil into the interior of the lubrication assembly 4;

[0039] The reflux assembly 5 has its interior communicating with the interior of the lubrication assembly 4 so that the reflux assembly 5 pushes the lubricating oil inside the lubrication assembly 4 to flow back for the reciprocating circulation of the lubricating oil inside the lubrication assembly 4.

[0040] During use, by starting the cylinder body 1, the extrusion assembly 3 fixedly installed at its telescopic end is driven. During its retraction process, the lubricating oil inside the extrusion assembly 3 can be pushed. Since the interior of the extrusion assembly 3 communicates with the interior of the lubrication assembly 4, and the interior of the lubrication assembly 4 communicates with the interior of the reflux assembly 5, when the lubricating oil inside the extrusion assembly 3 is pushed into the interior of the lubrication assembly 4, it can contact the outer surface of the piston rod inside the cylinder body 1, and then enter the interior of the reflux assembly 5. When the cylinder body 1 extends, the pressure on the extrusion assembly 3 can be released. Then, under the action of the reflux assembly 5 itself, the lubricating oil inside it can be slowly pushed into the interior of the lubrication assembly 4, and the lubricating oil inside it flows into the interior of the extrusion assembly 3. During its flowing process, it can fully contact the piston rod inside the cylinder body 1, thus facilitating the lubrication thereof.

[0041] In this utility model, by starting the cylinder body 1, the extrusion assembly 3 fixedly installed at its telescopic end is driven. During its retraction process, the lubricating oil inside the extrusion assembly 3 can be pushed. Since the interior of the extrusion assembly 3 communicates with the interior of the lubrication assembly 4, and the interior of the lubrication assembly 4 communicates with the interior of the reflux assembly 5, when the lubricating oil inside the extrusion assembly 3 is pushed into the interior of the lubrication assembly 4, it can contact the outer surface of the piston rod inside the cylinder body 1, and then enter the interior of the reflux assembly 5. Under the action of the reflux assembly 5 itself, the lubricating oil inside it can be slowly pushed into the interior of the lubrication assembly 4, and the lubricating oil inside it flows into the interior of the extrusion assembly 3. During its flowing process, it can fully contact the piston rod inside the cylinder body 1, thus enabling full lubrication thereof, avoiding its wear and affecting the use of the cylinder body 1.

[0042] In one embodiment, for the above-mentioned sealing assembly 2, the sealing assembly 2 includes an installation groove 201. The installation groove 201 is opened on one side of the cylinder body 1. Two guide sleeves 202 are fixedly installed inside the installation groove 201. Sealing rings 203 are arranged inside both of the two guide sleeves 202. A fixing block 204 is fixedly installed at the top of the installation groove 201.

[0043] By placing the lubricating component 4 inside the two sets of guide sleeves 202 and sleeving it on the outer surface of the piston rod inside the cylinder body 1, the sealing ring 203 provided inside it is made to fit the outer surface of the piston rod, facilitating the sealing of the lubricating oil inside the lubricating component 4. By fixedly installing the fixing block 204 on one side of the cylinder body 1, it can fix the positions of the guide sleeve 202 and the lubricating component 4, thereby improving its stability.

[0044] In one embodiment, for the above-mentioned extrusion component 3, the extrusion component 3 includes an oil storage tank 301 and a pressing block 302. The outer surface of the oil storage tank 301 is fixedly installed inside the cylinder body 1, the outer surface of the pressing block 302 is fixedly installed on the telescopic end of the cylinder body 1, an oil outlet pipe 303 is fixedly connected inside the oil storage tank 301, and one end of the oil outlet pipe 303 is communicated with the inside of the lubricating component 4;

[0045] A first piston 304 is slidably arranged inside the oil storage tank 301. The top end of the first piston 304 is fixedly connected with a push rod 305, and the top end of the push rod 305 is fixedly connected with a pressing plate 306.

[0046] By starting the cylinder body 1 to drive the pressing block 302 fixedly installed on its telescopic end to move, when the pressing block 302 moves, it can squeeze the pressing plate 306 arranged below it and make it move downward. When the pressing plate 306 moves downward, it can drive the push rod 305 fixedly connected to its bottom end to move. When the push rod 305 moves, it can drive the first piston 304 fixedly connected to its bottom end to move. When the first piston 304 moves, it can make the lubricating oil inside the oil storage tank 301 be pushed into the inside of the oil outlet pipe 303, and then enter the inside of the lubricating component 4 from one end of it, so as to lubricate the piston rod inside the cylinder body 1.

[0047] In one embodiment, for the above-mentioned extrusion component 3, the extrusion component 3 further includes a fuel filling pipe 307 and a limiting rod 308. The inside of the fuel filling pipe 307 is communicated with the inside of the oil storage tank 301. One end of the limiting rod 308 is fixedly connected to the bottom end of the pressing plate 306, and a first spring 309 is arranged outside the limiting rod 308. One end of the first spring 309 is fixedly connected to the top end of the oil storage tank 301.

[0048] The fuel filling pipe 307 facilitates adding lubricating oil into the oil storage tank 301. When the pressing plate 306 moves downward as it is squeezed by the pressing block 302, it can drive the limiting rod 308 fixedly connected to its bottom end to move, and at the same time can compress the first spring 309 fixedly connected to its bottom end. When the pressing block 302 releases the extrusion on the pressing plate 306, it can cooperate with the self-elastic force of the first spring 309 to move upward and reset.

[0049] In one embodiment, for the above-mentioned lubricating assembly 4, the lubricating assembly 4 includes a mounting ring 401. The outer surface of the mounting ring 401 is attached to one side of the guide sleeve 202. An oil groove 402 is formed inside the mounting ring 401. The inside of the oil groove 402 is communicated with the inside of the oil outlet pipe 303, and the inside of the oil groove 402 is communicated with the inside of the return assembly 5.

[0050] When the first piston 304 pushes the lubricating oil into the inside of the oil outlet pipe 303, it can enter the inside of the oil groove 402 through one end of the oil outlet pipe 303, and make contact with the piston rod inside the cylinder body 1, facilitating lubrication thereof. At the same time, the lubricating oil during the flowing process can enter the inside of the return assembly 5 through the oil groove 402, thereby facilitating the flow of the lubricating oil inside the oil groove 402.

[0051] In one embodiment, for the above-mentioned return assembly 5, the return assembly 5 includes a return box 501. The outer surface of the return box 501 is fixedly installed inside the cylinder body 1. A return pipe 502 is fixedly connected inside the return box 501. The inside of the return pipe 502 is communicated with the inside of the oil groove 402;

[0052] A second piston 503 is slidably arranged inside the return box 501. One side of the second piston 503 is fixedly connected with a guide rod 504, and one side of the second piston 503 is fixedly connected with a second spring 505. One end of the second spring 505 is fixedly connected with the inner wall of the return box 501.

[0053] The lubricating oil flowing inside the oil groove 402 can enter the inside of the return pipe 502 communicated with its inside. Since one end of the return pipe 502 is communicated with the inside of the return box 501, it can enter the inside of the return box 501, and can push the second piston 503 slidably arranged inside it. When the second piston 503 moves, it can drive the guide rod 504 fixedly connected to one side of it to move, and at the same time can compress the second spring 505 fixedly connected to one side of it, so as to push the second piston 503 to reset. When the second piston 503 resets, it can push the lubricating oil inside the return box 501 to enter the inside of the oil groove 402 through the return pipe 502, and then make it return to the inside of the oil storage tank 301 through the oil outlet pipe 303, so that the lubricating oil flows reciprocally, facilitating its full contact with the piston rod inside the cylinder body 1.

[0054] In one embodiment, for the above-mentioned mounting ring 401, a sealing groove 6 is formed on the outer surface of the mounting ring 401. A sealing gasket 7 is arranged inside the sealing groove 6. The bottom end of the sealing gasket 7 is fixedly installed inside the guide sleeve 202.

[0055] There are two sets of sealing grooves 6, which are respectively arranged at the upper and lower ends of the mounting ring 401, so as to facilitate the sealing between the sealing gasket 7 and the guide sleeve 202, and avoid the leakage of lubricating oil.

[0056] Through the above technical solutions: 1. By starting the cylinder body 1, the extrusion assembly 3 fixedly installed at its telescopic end is driven. During its retraction process, the lubricating oil inside the extrusion assembly 3 can be pushed. Since the inside of the extrusion assembly 3 is connected to the inside of the lubricating assembly 4, and the inside of the lubricating assembly 4 is connected to the inside of the return assembly 5, when the lubricating oil inside the extrusion assembly 3 is pushed into the inside of the lubricating assembly 4, it can contact the outer surface of the piston rod inside the cylinder body 1, and then enter the inside of the return assembly 5. Under the action of the return assembly 5 itself, the lubricating oil inside it can be slowly pushed into the inside of the lubricating assembly 4, and the lubricating oil inside it can flow into the inside of the extrusion assembly 3. During its flow process, it can make full contact with the piston rod inside the cylinder body 1, so as to fully lubricate it and avoid its wear, which affects the use of the cylinder body 1.

[0057] 2. The lubricating oil flowing inside the oil groove 402 enters the inside of the return pipe 502 connected to its inside, so that it can enter the inside of the return tank 501, and can push the second piston 503 slidably arranged inside it. When the second piston 503 moves, it can drive the guide rod 504 fixedly connected to one side of it to move, and at the same time can compress the second spring 505 fixedly connected to one side of it, so as to push the second piston 503 to reset. When the second piston 503 resets, it can push the lubricating oil inside the return tank 501 to enter the inside of the oil groove 402 through the return pipe 502, and then make it return to the inside of the oil storage tank 301 through the oil outlet pipe 303, so that the lubricating oil flows reciprocally, which is convenient for it to make full contact with the piston rod inside the cylinder body 1.

[0058] In the description of this specification, the description referring to terms such as "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0059] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific embodiments described. Obviously, many modifications and variations can be made according to the content of this specification. These embodiments are selected and specifically described in this specification in order to better explain the principle and practical application of the utility model, so that those skilled in the art can well understand and utilize the utility model. The utility model is only limited by the claims and their full scope and equivalents.

Claims

1. A cylinder facilitating the lubrication of a piston rod, comprising a cylinder body (1), characterized in that: A sealing assembly (2), an extrusion assembly (3), a lubrication assembly (4), and a reflux assembly (5) are respectively arranged on the cylinder body (1); The sealing assembly (2), the inner side of which is hermetically connected to the outer surface of the lubrication assembly (4), so that the sealing assembly (2) seals the lubricating oil inside the lubrication assembly (4); The extrusion assembly (3), the inside of which is communicated with the inside of the lubrication assembly (4), so that the extrusion assembly (3) adds lubricating oil to the inside of the lubrication assembly (4); The reflux assembly (5), the inside of which is communicated with the inside of the lubrication assembly (4), so that the reflux assembly (5) pushes the lubricating oil inside the lubrication assembly (4) to flow back for the lubricating oil to reciprocally circulate inside the lubrication assembly (4).

2. The cylinder facilitating the lubrication of the piston rod according to claim 1, wherein, The sealing assembly (2) includes a mounting groove (201) opened on one side of the cylinder body (1). Two guide sleeves (202) are fixedly installed inside the mounting groove (201). Sealing rings (203) are arranged inside both of the two guide sleeves (202). A fixing block (204) is fixedly installed at the top end of the mounting groove (201).

3. The cylinder facilitating lubrication of the piston rod according to claim 2, wherein, The extrusion assembly (3) includes an oil storage tank (301) and a pressing block (302). The outer surface of the oil storage tank (301) is fixedly installed inside the cylinder body (1). The outer surface of the pressing block (302) is fixedly installed at the telescopic end of the cylinder body (1). An oil outlet pipe (303) is fixedly connected inside the oil storage tank (301). One end of the oil outlet pipe (303) is communicated with the inside of the lubrication assembly (4); A first piston (304) is slidably arranged inside the oil storage tank (301). A push rod (305) is fixedly connected to the top end of the first piston (304). A pressing plate (306) is fixedly connected to the top end of the push rod (305).

4. A cylinder facilitating lubrication of a piston rod according to claim 3, characterized in that, The extrusion assembly (3) further includes an oil filling pipe (307) and a limiting rod (308). The inside of the oil filling pipe (307) is communicated with the inside of the oil storage tank (301). One end of the limiting rod (308) is fixedly connected to the bottom end of the pressing plate (306). A first spring (309) is arranged outside the limiting rod (308). One end of the first spring (309) is fixedly connected to the top end of the oil storage tank (301).

5. A cylinder facilitating the lubrication of a piston rod, characterized in that, The lubrication assembly (4) includes a mounting ring (401). The outer surface of the mounting ring (401) is arranged in contact with one side of the guide sleeve (202). An oil groove (402) is opened inside the mounting ring (401). The inside of the oil groove (402) is communicated with the inside of the oil outlet pipe (303). The inside of the oil groove (402) is communicated with the inside of the reflux assembly (5).

6. The air cylinder facilitating lubrication of the piston rod according to claim 5, characterized in that, The reflux assembly (5) includes a reflux tank (501), the outer surface of the reflux tank (501) is fixedly installed inside the cylinder body (1), a reflux pipe (502) is fixedly connected inside the reflux tank (501), and the inside of the reflux pipe (502) is communicated with the inside of the oil tank (402); A second piston (503) is slidably arranged inside the reflux tank (501), a guide rod (504) is fixedly connected to one side of the second piston (503), a second spring (505) is fixedly connected to one side of the second piston (503), and one end of the second spring (505) is fixedly connected to the inner wall of the reflux tank (501).

7. A cylinder facilitating the lubrication of a piston rod according to claim 5, characterized in that, A sealing groove (6) is formed on the outer surface of the mounting ring (401), a sealing gasket (7) is arranged inside the sealing groove (6), and the bottom end of the sealing gasket (7) is fixedly installed inside the guide sleeve (202).

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