Power cylinder

Abstract

The utility model relates to the technical field of power cylinders, in particular to a power cylinder which comprises a power cylinder body, a plunger is connected to the inner side of the power cylinder body in a sliding mode, and the top end of the power cylinder body is fixedly connected with an oil pipe which is vertically arranged and communicated with the power cylinder body. Fixing plates are arranged on the outer side of the end, close to the plunger, of the power cylinder body and the end, away from the power cylinder body, of the plunger, through holes which are horizontally formed and penetrate through the fixing plates are formed in one sides of the fixing plates, and sealing plates tightly attached to the fixing plates are arranged on one sides of the fixing plates; a through hole is formed in one side of the sealing plate, a round hole which is horizontally formed and penetrates through the sealing plate is formed in one side of the sealing plate, and a bolt which is horizontally arranged is arranged on the inner side of the through hole and the inner side of the round hole, so that external impurities such as dust or gravels can be prevented from being attached to the outer side of the plunger through the fixing plate, the through hole, the sealing plate, the round hole, the bolt, the nut, the telescopic pipe and the filter pipe; and the service life of the power cylinder body is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of power cylinders, in particular to a power cylinder. Background Art

[0002] The power cylinder is an actuator that converts hydraulic or pneumatic energy into mechanical energy and performs linear reciprocating motion (or swinging motion). It has a simple structure and reliable operation. When it is used to achieve reciprocating motion, the reduction device can be eliminated, and there is no transmission gap and the movement is smooth. According to the principle of providing pressure, the power cylinder can be divided into two categories: hydraulic cylinder and pneumatic cylinder. In the volumetric hydraulic transmission machinery used in oil processing and petrochemical production, the power hydraulic cylinder is the most commonly used form of hydraulic engine. The dynamic connection seal (piston and piston rod seal) of the power hydraulic cylinder is the most important structural element. Its reliability determines the stability of the entire hydraulic cylinder.

[0003] Many sealing rings are usually arranged inside the cylinder of the existing power cylinder to prevent oil leakage of the power cylinder. However, the plunger inside the existing cylinder is exposed to the outside world. Impurities such as dust and gravel from the outside may adhere to the surface of the plunger and be brought into the inside of the cylinder, which will not only pollute the hydraulic oil, but also cause damage to the sealing ring. In addition, the power cylinder may overheat after high-intensity use, and the existing power cylinder has no cooling measures. Therefore, a power cylinder is proposed to address the above problems. Utility Model Content

[0004] The purpose of the utility model is to provide a power cylinder to solve the problems raised in the above background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A power cylinder comprises a power cylinder body, wherein a plunger is slidably connected to the inner side of the power cylinder body, a vertically arranged oil pipe which passes through the power cylinder body is fixedly connected to the top of the power cylinder body, a fixing plate is provided on the outer side of one end of the power cylinder body close to the plunger and on the end of the plunger which is away from the power cylinder body, a through hole which is horizontally arranged and passes through the fixed plate is provided on one side of the fixing plate, a sealing plate which is tightly fitted with the fixing plate is provided on one side of the fixing plate, a circular hole which is horizontally arranged and passes through the sealing plate is provided on one side of the sealing plate, a horizontally arranged bolt is provided on the inner side of the through hole and the circular hole, a nut is spirally connected on the outer side of the bolt, a telescopic tube is fixedly connected to one side of the two sealing plates which are away from the fixing plate, and a filter tube which passes through the telescopic tube is fixedly connected to the outer side of the telescopic tube.

[0007] Preferably, a fixing groove is provided on the outer side of the power cylinder body, a cooling pipe is provided on the inner side of the fixing groove, the bottom end of the cooling pipe is fixedly connected to a connecting pipe which is horizontally arranged and passes through the cooling pipe, and the bottom end of the connecting pipe is fixedly connected to a cooling circulation pump which passes through the connecting pipe.

[0008] Preferably, the number of the fixing grooves and the number of the cooling tubes are both three, the shapes of the fixing grooves and the cooling tubes are both annular, and the outer side of the cooling tube is tightly fitted with the inner side of the fixing groove.

[0009] Preferably, the number of the fixing plates and the sealing plates are both two, the number of the through holes, the round holes, the bolts and the nuts are both twelve, the fixing plate located on the outer side of one end of the power cylinder body close to the plunger is connected to the power cylinder body in a fixed manner, and the fixing plate located on the end of the plunger away from the power cylinder body is connected to the plunger in a spiral manner.

[0010] Preferably, the fixing plate and the sealing plate are both cylindrical in shape, the fixing plate and the sealing plate have the same diameter, the through hole and the circular hole have the same inner diameter, and the inner diameter of the circular hole is larger than the outer diameter of the bolt.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. In the utility model, the fixed plate, through hole, sealing plate, circular hole, bolt, nut, telescopic tube and filter tube are provided, so that impurities such as dust or gravel from the outside can be prevented from adhering to the outside of the plunger, thereby improving the service life of the power cylinder body. First, the telescopic tube is installed, and the telescopic tube is sleeved on the outside of the plunger. Then, the fixed plate is screwed on one end of the plunger, and the telescopic tube is rotated so that the through hole on one side of the fixed plate is aligned with the circular hole on one side of the sealing plate. The bolt is inserted into the inner side of the circular hole and the through hole and the nut is tightened on the outer side of the bolt. At this time, the sealing plate and the fixed plate are tightly fitted to complete the installation of the telescopic tube. When the power cylinder body needs to be used, the oil pipe is externally connected to the hydraulic oil pump, and the hydraulic oil pump is started. The hydraulic oil pump introduces the hydraulic oil into the inner side of the power cylinder body through the oil pipe, and the plunger is pushed out by the hydraulic oil, thereby extending the telescopic tube. At this time, since the air pressure in the telescopic tube is lower than that in the outside, the outside gas enters the inner side of the telescopic tube through the filter tube, and the dust and impurities are blocked by the filter tube on the outside of the telescopic tube, thereby preventing the dust from adhering to the outside of the plunger.

[0013] 2. In the utility model, the power cylinder body has a cooling function by setting a fixed groove, a cooling pipe, a connecting pipe and a cooling circulation pump. When the power cylinder body is overheated, the equipment is powered on and the cooling circulation pump is started. The cooling circulation pump guides the coolant through the connecting pipe into the inner side of the cooling pipe located outside the fixed groove, thereby cooling the power cylinder body. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the telescopic tube structure of the utility model;

[0016] Figure 3 This is a schematic diagram of the structure of the power cylinder body of the utility model;

[0017] Figure 4 This is a schematic diagram of the cooling pipe structure of the utility model.

[0018] In the figure: 1. power cylinder body; 2. plunger; 3. oil pipe; 4. fixing plate; 5. through hole; 6. sealing plate; 7. round hole; 8. bolt; 9. nut; 10. telescopic tube; 11. filter tube; 12. fixing groove; 13. cooling pipe; 14. connecting pipe; 15. cooling circulation pump. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] In the description of the present utility model, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present utility model; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0021] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the utility model.

[0022] See also Figure 1-4 , the utility model provides a technical solution:

[0023] A power cylinder comprises a power cylinder body 1, a plunger 2 is slidably connected to the inner side of the power cylinder body 1, a vertically arranged oil pipe 3 which passes through the power cylinder body 1 is fixedly connected to the top of the power cylinder body 1, a fixing plate 4 is provided on the outer side of one end of the power cylinder body 1 close to the plunger 2 and on the end of the plunger 2 away from the power cylinder body 1, a through hole 5 which is horizontally arranged and passes through the fixing plate 4 is provided on one side of the fixing plate 4, a sealing plate 6 which is tightly fitted with the fixing plate 4 is provided on one side of the fixing plate 4, a circular hole 7 which is horizontally arranged and passes through the sealing plate 6 is provided on one side of the sealing plate 6, a horizontally arranged bolt 8 is provided on the inner side of the through hole 5 and the circular hole 7, a nut 9 is spirally connected on the outer side of the bolt 8, a telescopic tube 10 is fixedly connected to the side of the two sealing plates 6 away from the fixing plate 4, and a filter tube 11 which passes through the telescopic tube 10 is fixedly connected to the outer side of the telescopic tube 10.

[0024] A fixing groove 12 is provided on the outside of the power cylinder body 1, a cooling pipe 13 is provided on the inside of the fixing groove 12, a connecting pipe 14 which is arranged horizontally and passes through the cooling pipe 13 is fixedly connected to the bottom end of the cooling pipe 13, a cooling circulation pump 15 which passes through the connecting pipe 14 is fixedly connected to the bottom end of the connecting pipe 14, the number of the fixing grooves 12 and the cooling pipe 13 are both three, the shape of the fixing grooves 12 and the cooling pipe 13 are both annular, the outside of the cooling pipe 13 is tightly fitted with the inside of the fixing groove 12, and the number of the fixing plate 4 and the sealing plate 6 are both two There are twelve through holes 5, circular holes 7, bolts 8 and nuts 9. The fixing plate 4 located on the outer side of the end of the power cylinder body 1 close to the plunger 2 is connected to the power cylinder body 1 in a fixed manner, and the fixing plate 4 located at the end of the plunger 2 away from the power cylinder body 1 is connected to the plunger 2 in a spiral manner. The shapes of the fixing plate 4 and the sealing plate 6 are both cylindrical, and the diameters of the fixing plate 4 and the sealing plate 6 are the same. The inner diameters of the through holes 5 and the circular holes 7 are the same, and the inner diameter of the circular holes 7 is larger than the outer diameter of the bolts 8.

[0025] Workflow: first install the telescopic tube 10, put the telescopic tube 10 on the outside of the plunger 2, then screw the fixing plate 4 on one end of the plunger 2, rotate the telescopic tube 10, so that the through hole 5 on one side of the fixing plate 4 is aligned with the circular hole 7 on one side of the sealing plate 6, insert the bolt 8 into the inside of the circular hole 7 and the through hole 5 and tighten the nut 9 on the outside of the bolt 8. At this time, the sealing plate 6 and the fixing plate 4 fit tightly, and the installation of the telescopic tube 10 is completed. When the power cylinder body 1 needs to be used, the oil pipe 3 is connected to the hydraulic oil pump, and the hydraulic oil pump is started. The hydraulic oil pump introduces the hydraulic oil into the inner side of the power cylinder body 1 through the oil pipe 3, and the plunger 2 is pushed out by the hydraulic oil. The telescopic tube 10 is extended. At this time, since the air pressure in the telescopic tube 10 is lower than that in the outside, the outside gas enters the inside of the telescopic tube 10 through the filter tube 11, and the dust and impurities are blocked by the filter tube 11 on the outside of the telescopic tube 10, thereby preventing dust from adhering to the outside of the plunger 2. The fixed groove 12, the cooling pipe 13, the connecting pipe 14 and the cooling circulation pump 15 are provided, so that the power cylinder body 1 has a cooling function. When the power cylinder body 1 is overheated, the equipment is powered on and the cooling circulation pump 15 is started. The cooling circulation pump 15 introduces the coolant into the inside of the cooling pipe 13 located outside the fixed groove 12 through the connecting pipe 14, thereby cooling the power cylinder body 1.

[0026] The contents not described in detail in this specification belong to the prior art known to the professional and technical personnel in this field. The standard parts used in this utility model can be purchased from the market, and the special-shaped parts can be customized according to the description and the drawings. The specific connection methods of each part adopt the conventional means such as bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt the conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here.

[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A power cylinder, comprising a power cylinder body (1), characterized in that: A plunger (2) is slidably connected to the inner side of the power cylinder body (1); a vertically arranged oil pipe (3) penetrating the power cylinder body (1) is fixedly connected to the top of the power cylinder body (1); a fixing plate (4) is provided on the outer side of one end of the power cylinder body (1) close to the plunger (2) and on the end of the plunger (2) away from the power cylinder body (1); a through hole (5) arranged horizontally and penetrating the fixing plate (4) is provided on one side of the fixing plate (4); a sealing plate (6) tightly fitted with the fixing plate (4) is provided on one side of the fixing plate (4); a circular hole (7) arranged horizontally and penetrating the sealing plate (6) is provided on one side of the sealing plate (6); bolts (8) arranged horizontally are provided on the inner side of the through hole (5) and the circular hole (7); nuts (9) are spirally connected to the outer side of the bolts (8); telescopic tubes (10) are fixedly connected to the sides of the two sealing plates (6) away from the fixing plate (4); and a filter tube (11) penetrating the telescopic tube (10) is fixedly connected to the outer side of the telescopic tube (10).

2. A power cylinder according to claim 1, characterized in that: A fixing groove (12) is provided on the outside of the power cylinder body (1), a cooling pipe (13) is provided on the inside of the fixing groove (12), a connecting pipe (14) which is arranged horizontally and communicates with the cooling pipe (13) is fixedly connected to the bottom end of the cooling pipe (13), and a cooling circulation pump (15) which communicates with the connecting pipe (14) is fixedly connected to the bottom end of the connecting pipe (14).

3. A power cylinder according to claim 2, characterized in that: The number of the fixing grooves (12) and the number of the cooling tubes (13) are both three, the shapes of the fixing grooves (12) and the cooling tubes (13) are both annular, and the outer side of the cooling tubes (13) fits tightly with the inner side of the fixing grooves (12).

4. A power cylinder according to claim 1, characterized in that: The number of the fixing plates (4) and the sealing plates (6) are both two, the number of the through holes (5), the round holes (7), the bolts (8) and the nuts (9) are both twelve, the fixing plate (4) located outside the end of the power cylinder body (1) close to the plunger (2) and the power cylinder body (1) is connected in a fixed manner, and the fixing plate (4) located at the end of the plunger (2) away from the power cylinder body (1) and the plunger (2) is connected in a spiral manner.

5. The power cylinder according to claim 1, characterized in that: The fixing plate (4) and the sealing plate (6) are both cylindrical in shape, the fixing plate (4) and the sealing plate (6) have the same diameter, the through hole (5) and the circular hole (7) have the same inner diameter, and the inner diameter of the circular hole (7) is larger than the outer diameter of the bolt (8).

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