Thin oil cylinder

Abstract

The utility model provides a kind of thin oil cylinder, including disc-shaped cylinder body, disc-shaped piston and oil pipe joint;The inside of cylinder body is provided with the piston cavity of upper end opening, piston can be vertically moved and inlay in piston cavity, sealing ring is embedded on the outer peripheral wall of piston lower part, and sealing ring is used to seal the gap between piston and cylinder body;The inner bottom portion of piston cavity is provided with the convex of conical platform, the middle part of piston lower end is provided with the recess of conical platform, the inner top portion of recess is supported in the upper end of convex, and the outer peripheral wall between convex and the inner peripheral wall of recess and the lower end of piston and the inner bottom portion between piston cavity form annular gap;The inside of cylinder body is further provided with liquid flow channel, the inner end portion of liquid flow channel is communicated with annular gap, and oil pipe joint is threadedly connected at the outer end portion of liquid flow channel;The utility model can satisfy the jacking demand of component in narrow space.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic cylinder technology, and more specifically, to a thin hydraulic cylinder. Background Technology

[0002] Hydraulic cylinders are commonly used hydraulic controlled components. When hydraulic oil is injected into the cylinder, the piston rod can gradually extend from the cylinder to push or lift the component. When the hydraulic oil is gradually discharged from the cylinder, the piston rod can gradually retract into the cylinder to release the pushing or lifting state. However, the hydraulic cylinders currently on the market are all slender structures. When the hydraulic cylinder needs to be placed in a narrow space, such as when it needs to be placed at the bottom of the equipment and the equipment needs to be lifted, the existing hydraulic cylinders on the market cannot meet the usage requirements. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a thin hydraulic cylinder that can meet the lifting requirements of components in a confined space.

[0004] This utility model provides a thin hydraulic cylinder, including a disc-shaped cylinder body, a disc-shaped piston, and an oil pipe connector. The cylinder body has an inner side with an open piston chamber at the top. The piston is vertically movable and embedded in the piston chamber. A sealing ring is fitted on the outer peripheral wall of the lower part of the piston to seal the gap between the piston and the cylinder body. A frustum-shaped protrusion is provided in the middle of the inner bottom of the piston chamber, and a frustum-shaped concave cavity is provided in the middle of the lower end of the piston. The top of the concave cavity is supported by the upper end of the protrusion, forming an annular gap between the outer peripheral wall of the protrusion and the inner peripheral wall of the concave cavity, and between the lower end of the piston and the inner bottom of the piston chamber. The cylinder body also has a fluid flow channel, the inner end of which communicates with the annular gap. The oil pipe connector is threadedly connected to the outer end of the fluid flow channel.

[0005] By adopting the above-mentioned structure, the present invention provides a thin-shaped cylinder, as both the cylinder body and the piston are disc-shaped. This allows the cylinder to be used in confined spaces to lift components. For example, the cylinder can be placed at the bottom of the equipment to lift the equipment, thus meeting the requirement of lifting components in confined spaces.

[0006] In one possible implementation, an annular groove is provided on the outer peripheral wall of the piston, and the annular groove is located above the sealing ring. With this structure, the annular groove can serve as a stroke warning line. That is, when the piston moves upward relative to the cylinder, if the user observes that the annular groove has been exposed from the cylinder, it indicates that the cylinder has reached its maximum stroke. At this time, the user should stop the hydraulic device from continuously injecting hydraulic oil into the piston chamber to prevent the piston from dislodging from the cylinder.

[0007] In one possible implementation, the upper surface of the piston is provided with several annular anti-slip grooves that are spaced apart from the inside to the outside along the radial direction of the piston. With this structure, when the upper end of the piston comes into contact with the part that needs to be lifted, the friction between the upper end of the piston and the part that needs to be lifted can be increased by the action of the several annular anti-slip grooves, thereby achieving the purpose of anti-slip.

[0008] In one possible implementation, a handle is connected to the outer wall of the cylinder body, and the handle extends in the radial direction of the cylinder body. By connecting the handle to the outer wall of the cylinder body, when the thin cylinder needs to be inserted into a narrow space, the thin cylinder can be pushed and pulled by the handle, thereby facilitating the insertion or removal of the thin cylinder into or from the narrow space, for example, inserting the thin cylinder into the bottom of the equipment or removing it from the bottom of the equipment.

[0009] In one possible implementation, a threaded hole is provided on the outer wall of the cylinder, and the end of the handle facing the cylinder is threadedly connected to the threaded hole. With this structure, the end of the handle facing the cylinder can be reliably and conveniently connected to the cylinder, and it has the advantage of easy disassembly of the handle and the cylinder when the handle is not needed. Attached Figure Description

[0010] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0011] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0012] Figure 3 for Figure 2 A magnified structural diagram of point A in the middle;

[0013] Figure 4 This is a partially exploded three-dimensional structural diagram of the present invention. Detailed Implementation

[0014] First, those skilled in the art should understand that these embodiments are merely used to explain the technical principles of the embodiments of this application and are not intended to limit the scope of protection of the embodiments of this application. Those skilled in the art can make adjustments as needed to adapt to specific application scenarios.

[0015] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0016] In the embodiments of this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0017] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0018] See Figure 1-4 As shown in the figure, this application discloses a thin hydraulic cylinder, including a disc-shaped cylinder body 1, a disc-shaped piston 2, and an oil pipe connector 3; the inner side of the cylinder body 1 is provided with a piston cavity 11 with an open upper end, and the piston 2 is vertically movable and embedded in the piston cavity 11. A sealing ring 4 is embedded on the outer peripheral wall of the lower part of the piston 2, and the sealing ring 4 is used to seal the gap between the piston 2 and the cylinder body 1; a frustum-shaped protrusion 12 is provided in the middle of the inner bottom of the piston cavity 11, and a frustum-shaped concave cavity 21 is provided in the middle of the lower end of the piston 2. The inner top of the concave cavity 21 is supported on the upper end of the protrusion 12, so that the outer peripheral wall of the protrusion 12 and the inner peripheral wall of the concave cavity 21, as well as the lower end of the piston 2 and the piston cavity 11, are connected. An annular gap 5 is formed between the inner bottom of the cylinder body 1 and the inner end of the cylinder body 1. A fluid flow channel 13 is also provided inside the cylinder body 1. The inner end of the fluid flow channel 13 is connected to the annular gap 5. The oil pipe joint 3 is threadedly connected to the outer end of the fluid flow channel 13. When using this utility model, the oil pipe joint is connected to the hydraulic pump station through the hydraulic oil pipe. When the hydraulic pump station injects hydraulic oil into the annular gap through the hydraulic oil pipe, the oil pipe joint and the fluid flow channel, the piston can gradually extend out of the cylinder body and push or lift the component. When the hydraulic pump station starts to depressurize, the hydraulic oil in the annular gap can flow back to the hydraulic pump station through the fluid flow channel, the oil pipe joint and the hydraulic oil pipe. At this time, the piston can gradually retract into the cylinder body.

[0019] An annular groove 22 is provided on the outer peripheral wall of piston 2, and the annular groove 22 is located above the sealing ring 4. With this structure, the annular groove can serve as a stroke warning line. That is, when the piston moves upward relative to the cylinder, if the user observes that the annular groove has been exposed from the cylinder, it means that the cylinder has reached its maximum stroke. At this time, the user should stop the hydraulic device from continuously injecting hydraulic oil into the piston chamber to prevent the piston from dislodging from the cylinder.

[0020] The upper surface of piston 2 is provided with several annular anti-slip grooves 23 that are spaced out from the inside to the outside along the radial direction of piston 2. With this structure, when the upper end of piston comes into contact with the part that needs to be lifted, the friction between the upper end of piston and the part that needs to be lifted can be increased under the action of several annular anti-slip grooves, thereby achieving the purpose of anti-slip.

[0021] A handle 6 is connected to the outer wall of the cylinder body 1, and the handle 6 extends in the radial direction of the cylinder body 1. After the handle is connected to the outer wall of the cylinder body, when the thin cylinder needs to be inserted into a narrow space, the thin cylinder can be pushed and pulled by the handle, so that the thin cylinder can be inserted into or pulled out of the narrow space, for example, the thin cylinder can be inserted into the bottom of the equipment or pulled out of the bottom of the equipment.

[0022] A threaded hole 14 is provided on the outer side wall of the cylinder body 1, and the end of the handle 6 facing the cylinder body 1 is threadedly connected to the threaded hole 14. With this structure, the end of the handle facing the cylinder body can be reliably and conveniently connected to the cylinder body, and it has the advantage of easy disassembly of the handle and the cylinder body when the handle is not needed.

[0023] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A thin oil cylinder characterized by: The cylinder includes a disc-shaped cylinder (1), a disc-shaped piston (2), and an oil pipe connector (3); characterized in that: the inner side of the cylinder (1) is provided with a piston chamber (11) with an upper opening, the piston (2) is vertically movable and embedded in the piston chamber (11), a sealing ring (4) is embedded on the lower outer peripheral wall of the piston (2), the sealing ring (4) is used to seal the gap between the piston (2) and the cylinder (1); a frustum-shaped protrusion (12) is provided in the middle of the inner bottom of the piston chamber (11), the lower part of the piston (2) is... A conical cavity (21) is provided in the middle of the end. The top of the cavity (21) is supported on the upper end of the protrusion (12), and an annular gap (5) is formed between the outer peripheral wall of the protrusion (12) and the inner peripheral wall of the cavity (21) and between the lower end of the piston (2) and the inner bottom of the piston chamber (11). A fluid flow channel (13) is also provided inside the cylinder (1). The inner end of the fluid flow channel (13) is connected to the annular gap (5). The oil pipe joint (3) is threadedly connected to the outer end of the fluid flow channel (13).

2. The thin-film hydraulic cylinder according to claim 1, characterized in that: The piston (2) has an annular groove (22) on its outer peripheral wall, and the annular groove (22) is located above the sealing ring (4).

3. The thin-film hydraulic cylinder according to claim 1 or 2, characterized in that: The piston (2) has several annular anti-slip grooves (23) arranged in a radial direction from the inside to the outside along the upper surface of the piston (2).

4. The thin-film hydraulic cylinder according to claim 3, characterized in that: A handle (6) is connected to the outer wall of the cylinder (1), and the handle (6) extends in the radial direction of the cylinder (1).

5. The thin-film hydraulic cylinder according to claim 4, characterized in that: A threaded hole (14) is provided on the outer side wall of the cylinder (1), and the end of the handle (6) facing the cylinder (1) is threadedly connected to the threaded hole (14).

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