CN212717490U - Adjustable shock absorption oil cylinder - Google Patents

Abstract

The utility model relates to an engineering machine tool technical field, more specifically the damping cylinder with adjustable says so. Including piston rod subassembly, cylinder body and spring assembly, can improve the damping performance of hydro-cylinder, avoided the direct contact of damping spring and piston, can adjust the pressure in the cylinder body, avoided under the big circumstances of pressure condition, cause damping device impaired. Piston fixed connection is at the right-hand member of piston rod, the centre of piston is equipped with the oil duct, the damping hole sets up the left end at the oil duct, intracavity including floating piston sliding connection, ejector pin fixed connection is on floating piston, intake pipe fixed connection on the piston rod and with the intercommunication, bottom plate sliding connection is in the jar wall, the screw rod adopts threaded connection with the bottom plate, inlet tube fixed connection and intercommunication are on the jar wall, the piston rod left end passes the jar wall and extends to the outside of cylinder body, the left end fixed connection of spring is in the support cover, intracavity including support cover fixed connection.

Description

Adjustable shock absorption oil cylinder

Technical Field

The utility model relates to an engineering machine tool technical field, more specifically the damping cylinder with adjustable says so.

Background

The utility model provides a hydraulic cylinder, this utility model provides a hydraulic cylinder of current patent No. CN201620311690.7, mainly includes hydro-cylinder, prefill valve, piston, oil tank and hydraulic pump, hydro-cylinder one side is equipped with the prefill valve, be equipped with the inner chamber in the hydro-cylinder, the oil-out of inner chamber passes through prefill valve and oil tank intercommunication, is equipped with the oil inlet on the hydro-cylinder and communicates with the inner chamber, is equipped with little draining port and inner chamber intercommunication on the hydro-cylinder, is equipped with the loop bar above the hydro-cylinder, and the inner chamber docks with the loop bar, and the piston activity is in the loop bar and runs through hydro-cylinder and inner chamber, the prefill valve passes through logical oil circuit and hydraulic pump connection; the system is controlled by a logic oil path, wherein the logic oil path consists of an oil inlet logic oil path and an oil return logic oil path. The utility model discloses a three main part of driving system, control system, actuating system constitutes, produces the liquid oil of certain internal pressure with the oil pump, conveys the hydro-cylinder through the control of logic oil circuit, and the speed that rises can reach 3 meters per second, descends to the motion of freely falling body, and its is fast, the energy consumption is low. However, the device has poor shock absorbing performance and is easily damaged under high pressure.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a shock attenuation hydro-cylinder with adjustable, its beneficial effect does the utility model discloses can improve the damping performance of hydro-cylinder, avoid the direct contact of damping spring and piston, can adjust the pressure in the cylinder body, avoid under the big circumstances of pressure condition, cause damping device impaired to lead to equipment to damage under the big circumstances of pressure.

The purpose of the utility model is realized through the following technical scheme:

an adjustable shock absorption oil cylinder comprises a piston rod assembly, a cylinder body and a spring assembly, wherein the piston rod assembly comprises a piston, an inner cavity, an air inlet pipe, a damping hole, a floating piston, an ejector rod and a piston rod; the piston is fixedly connected to the right end of the piston rod, an oil duct is arranged in the middle of the piston, the damping hole is formed in the left end of the oil duct, the floating piston is connected in the inner cavity in a sliding mode, the ejector rod is fixedly connected to the floating piston, and the air inlet pipe is fixedly connected and communicated with the piston rod;

the cylinder body comprises a cylinder wall, an oil inlet pipe, a screw rod and a bottom plate; the bottom plate is connected in the cylinder wall in a sliding mode, the screw rod is connected with the bottom plate through threads, the oil inlet pipe is fixedly connected and communicated with the cylinder wall, and the left end of the piston rod penetrates through the cylinder wall and extends to the outside of the cylinder body;

the spring assembly comprises a spring and a supporting sleeve; the left end fixed connection of spring is in supporting the cover, supports the intracavity of cover fixed connection.

And a dustproof sealing ring is arranged at the joint of the cylinder wall and the piston rod.

And a sealing ring is arranged at the joint of the bottom plate and the right end of the cylinder wall.

The supporting sleeve and the ejector rod are coaxial.

And a sealing rubber ring is arranged at the joint of the piston and the piston rod.

The utility model relates to a damping cylinder's beneficial effect with adjustable does:

the utility model relates to a damping cylinder with adjustable, the utility model discloses can improve the damping performance of hydro-cylinder, avoid the direct contact of damping spring and piston, can adjust the pressure in the cylinder body, avoid under the big condition of pressure condition, cause damping device impaired to lead to equipment to damage under the big condition of pressure.

Drawings

Fig. 1 is a schematic structural diagram of an adjustable shock absorption oil cylinder of the present invention;

fig. 2 is a schematic structural diagram of an adjustable damping cylinder of the present invention;

FIG. 3 is a first schematic structural view of the piston rod assembly;

FIG. 4 is a second schematic structural view of the piston rod assembly;

FIG. 5 is a schematic structural view of the cylinder;

fig. 6 is a schematic structural view of a spring assembly.

In the figure: a piston rod assembly 1; a piston 1-1; 1-2 of inner cavity; 1-3 of an air inlet pipe; 1-4 of a damping hole; 1-5 of a floating piston; 1-6 of a top rod; a piston rod 1-7; a cylinder body 2; a cylinder wall 2-1; 2-2 parts of an oil inlet pipe; 2-3 of a screw; 2-4 of a bottom plate; a spring assembly 3; a spring 3-1; and 3-2 of a support sleeve.

Detailed Description

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

The present invention will be described in further detail with reference to the accompanying fig. 1-6 and the specific implementation method.

The first embodiment is as follows:

the embodiment is described below with reference to fig. 1-6, and an adjustable shock absorption oil cylinder comprises a piston rod assembly 1, a cylinder body 2 and a spring assembly 3, wherein the piston rod assembly 1 comprises a piston 1-1, an inner cavity 1-2, an air inlet pipe 1-3, a damping hole 1-4, a floating piston 1-5, a push rod 1-6 and a piston rod 1-7; the piston 1-1 is fixedly connected to the right end of the piston rod 1-7, an oil channel is arranged in the middle of the piston 1-1, the damping hole 1-4 is arranged at the left end of the oil channel, the floating piston 1-5 is connected in the inner cavity 1-2 in a sliding mode, the ejector rod 1-6 is fixedly connected to the floating piston 1-5, and the air inlet pipe 1-3 is fixedly connected and communicated with the piston rod 1-7; the inner cavity 1-2 is filled with gas from the air inlet pipe 1-3, the right end of the floating piston 1-5 is attached to the left end of the piston 1-1, when the hydraulic cylinder works, high pressure is generated in the cylinder body 2 due to the fact that hydraulic oil in the cylinder body 2 cannot flow back fast, the hydraulic oil pushes the gas in the inner cavity 1-2 to be compressed, part of hydraulic oil flows into the inner cavity 1-2 through the oil duct, the danger that high pressure is generated in a moment is avoided, after the high pressure in the cylinder body 2 disappears, part of hydraulic oil flows back to the cylinder body through the damping holes 1-4, and the danger that equipment is damaged under the high pressure condition is avoided.

The cylinder body 2 comprises a cylinder wall 2-1, an oil inlet pipe 2-2, a screw rod 2-3 and a bottom plate 2-4; the bottom plate 2-4 is connected in the cylinder wall 2-1 in a sliding manner, the screw rod 2-3 is connected with the bottom plate 2-4 by threads, the oil inlet pipe 2-2 is fixedly connected and communicated with the cylinder wall 2-1, and the left end of the piston rod 1-7 penetrates through the cylinder wall 2-1 and extends to the outside of the cylinder body 2; hydraulic oil is input into the cylinder wall 2-1 through the oil inlet pipe 2-2 to provide power for the movement of the piston rod 1-7, and the screw rod 2-3 is rotated to change the position of the bottom plate 2-4, so that the volume in the cylinder wall 2-1 is changed, and the pressure generated by equipment is different when the equipment is impacted externally.

The spring assembly 3 comprises a spring 3-1 and a supporting sleeve 3-2; the left end of the spring 3-1 is fixedly connected in the supporting sleeve 3-2, and the supporting sleeve 3-2 is fixedly connected in the inner cavity 1-2. When a large impact is applied, the ejector rod 1-6 moves leftwards rapidly to be in contact with the spring 3-1, the spring 3-1 is compressed, the leftward movement speed of the ejector rod 1-6 is slowed down through interaction force, and the support sleeve 3-2 prevents the spring 3-1 from deviating when the impact force is applied.

The second embodiment is as follows:

in the following, referring to fig. 1-6, the joint between the cylinder wall 2-1 and the piston rod 1-7 is provided with a dust-proof sealing ring to prevent hydraulic oil from flowing out of the joint gap between the cylinder wall 2-1 and the piston rod 1-7.

The third concrete implementation mode:

the present embodiment will be described with reference to fig. 1-6, wherein the joint between the bottom plate 2-4 and the right end of the cylinder wall 2-1 is provided with a sealing ring. The hydraulic oil is prevented from flowing out, and waste is avoided.

The fourth concrete implementation mode:

the present embodiment is described below with reference to fig. 1-6, and the support sleeve 3-2 is coaxial with the push rod 1-6, and can accurately contact with the spring 3-1 when the push rod 1-6 moves to the left.

The fifth concrete implementation mode:

in the following, referring to fig. 1-6, the joint between the piston 1-1 and the piston rod 1-7 is provided with a sealing rubber ring to prevent hydraulic oil from flowing into the inner cavity 1-2 when the device is not in operation.

The utility model relates to a shock-absorbing cylinder's theory of operation with adjustable: when the device is used, the inner cavity 1-2 is filled with gas from the air inlet pipe 1-3, the right end of the floating piston 1-5 is attached to the left end of the piston 1-1, when the hydraulic cylinder works, high pressure is generated in the cylinder body 2 due to the fact that hydraulic oil in the cylinder body 2 cannot flow back quickly, the hydraulic oil pushes the gas in the inner cavity 1-2 to be compressed, part of the hydraulic oil flows into the inner cavity 1-2 through the oil duct, the danger that high pressure is generated in a moment is avoided, after the high pressure in the cylinder body 2 disappears, part of the hydraulic oil flows back to the cylinder body through the damping holes 1-4, hydraulic oil is input into the cylinder wall 2-1 through the oil inlet pipe 2-2 to provide power for the movement of the piston rod 1-8, the screw rod 2-3 is rotated to change the position of the bottom plate 2-4, and, when a large impact is applied, the ejector rod 1-6 moves leftwards rapidly to be in contact with the spring 3-1, the spring 3-1 is compressed, the leftward movement speed of the ejector rod 1-6 is slowed down through interaction force, and the support sleeve 3-2 prevents the spring 3-1 from deviating when the impact force is applied.

Of course, the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and the changes, modifications, additions or replacements made by the person skilled in the art within the scope of the present invention also belong to the protection scope of the present invention.

Claims (5)

1. The utility model provides a shock attenuation hydro-cylinder with adjustable, includes piston rod subassembly (1), cylinder body (2) and spring assembly (3), its characterized in that: the piston rod assembly (1) comprises a piston (1-1), an inner cavity (1-2), an air inlet pipe (1-3), a damping hole (1-4), a floating piston (1-5), a push rod (1-6) and a piston rod (1-7); the piston (1-1) is fixedly connected to the right end of the piston rod (1-7), an oil channel is arranged in the middle of the piston (1-1), the damping hole (1-4) is arranged at the left end of the oil channel, the floating piston (1-5) is slidably connected in the inner cavity (1-2), the ejector rod (1-6) is fixedly connected to the floating piston (1-5), and the air inlet pipe (1-3) is fixedly connected and communicated with the piston rod (1-7);

the cylinder body (2) comprises a cylinder wall (2-1), an oil inlet pipe (2-2), a screw rod (2-3) and a bottom plate (2-4); the bottom plate (2-4) is connected in the cylinder wall (2-1) in a sliding manner, the screw rod (2-3) is connected with the bottom plate (2-4) by threads, the oil inlet pipe (2-2) is fixedly connected and communicated with the cylinder wall (2-1), and the left end of the piston rod (1-7) penetrates through the cylinder wall (2-1) and extends to the outside of the cylinder body (2);

the spring assembly (3) comprises a spring (3-1) and a supporting sleeve (3-2); the left end of the spring (3-1) is fixedly connected in the supporting sleeve (3-2), and the supporting sleeve (3-2) is fixedly connected in the inner cavity (1-2).

2. The adjustable shock absorption oil cylinder according to claim 1, characterized in that: and a dustproof sealing ring is arranged at the joint of the cylinder wall (2-1) and the piston rod (1-7).

3. The adjustable shock absorption oil cylinder according to claim 2, characterized in that: and a sealing ring is arranged at the joint of the bottom plate (2-4) and the right end of the cylinder wall (2-1).

4. The adjustable shock absorption oil cylinder according to claim 3, characterized in that: the supporting sleeve (3-2) is coaxial with the ejector rod (1-6).

5. The adjustable shock absorption oil cylinder according to claim 4, characterized in that: and a sealing rubber ring is arranged at the joint of the piston (1-1) and the piston rod (1-7).

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