CN216407344U

CN216407344U - Pressurizing pull rod oil cylinder

Info

Publication number: CN216407344U
Application number: CN202122513282.3U
Authority: CN
Inventors: 李小兰
Original assignee: Sichuan Xinyue Precision Technology Co ltd
Current assignee: Sichuan Xinyue Precision Technology Co ltd
Priority date: 2021-10-19
Filing date: 2021-10-19
Publication date: 2022-04-29
Anticipated expiration: 2031-10-19

Abstract

The utility model discloses a booster pull rod oil cylinder which comprises a cylinder body structure and a piston structure, wherein the cylinder body structure comprises a cylinder barrel I and a cylinder barrel II which are separated by a connecting sleeve; a first piston rod is arranged in the first cylinder barrel, a first piston is fixedly arranged at the right end of the first piston rod, a second piston is arranged in the second cylinder barrel, a second piston is fixedly arranged at the right end of the second piston rod, a through hole for communicating the first cylinder barrel with the second cylinder barrel is formed in the connecting sleeve in a penetrating mode, the left end of the second piston rod penetrates through the through hole to be abutted against the right end of the first piston rod, an oil through hole is formed in the second piston rod in a penetrating mode, and an oil through channel is formed in the left end face of the second piston rod in a sinking mode. Has the advantages that: the plurality of pistons are arranged, so that the action area of the hydraulic oil on the force applied to the pistons is increased, the output pressure of the hydraulic cylinder is improved, and the air valve is arranged, so that the sucked external air is filtered, and impurities are prevented from entering the second cylinder barrel. Because the inside of the second piston rod is provided with the oil through hole in a penetrating way, hydraulic oil can be guided into the first cylinder barrel.

Description

Pressurizing pull rod oil cylinder

Technical Field

The utility model relates to the technical field of pressure cylinders, in particular to a pressure-boosting pull rod oil cylinder.

Background

The hydraulic cylinder is a hydraulic actuator which converts hydraulic energy into mechanical energy and performs linear reciprocating motion (or swinging motion). It has simple structure and reliable operation. When it is used to implement reciprocating motion, it can omit speed-reducing device, and has no transmission gap, and its motion is stable, so that it can be extensively used in various mechanical hydraulic systems. The output force of the hydraulic cylinder is in direct proportion to the effective area of the piston and the pressure difference between the two sides of the effective area; the hydraulic cylinder is basically composed of a cylinder barrel and a cylinder cover, a piston and a piston rod, a sealing device, a buffering device and an exhaust device. The damping device and the exhaust device are determined according to specific application occasions, and other devices are necessary.

In the hydraulic cylinder in the prior art, under the condition that the diameter of the piston is the same as the oil pressure, the acting force on the outside is not different when the piston rod extends and contracts, and the larger the output pressure is, the more market competitive advantage is provided when the diameter of the piston is the same as the oil pressure, so that a pressurized pull rod oil cylinder is urgently researched to solve the problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the technical defects and provide the booster pull rod oil cylinder which is simple in structure, has higher output pressure under the condition that the diameter of a piston and the driving oil pressure are in the same order of magnitude, has market competitive advantages and has a good using effect.

In order to solve the technical problems, the technical scheme provided by the utility model is as follows: a boosting pull rod oil cylinder comprises a cylinder body structure and a piston structure, wherein the cylinder body structure comprises a cylinder barrel I and a cylinder barrel II which are separated by a connecting sleeve, a front end cover is arranged at the left end of the cylinder barrel I, a rear end cover is arranged at the right end of the cylinder barrel II, and a gland for sealing is further arranged at the left side of the front end cover; the oil cylinder is characterized in that a first piston rod is arranged in the first cylinder barrel, a first piston is fixedly arranged at the right end of the first piston rod, a second piston is arranged in the second cylinder barrel, a second piston is fixedly arranged at the right end of the second piston rod, the connecting sleeve penetrates through a through hole which communicates the first cylinder barrel with the second cylinder barrel, the left end of the second piston rod penetrates through the through hole to be abutted against the right end of the first piston rod, an oil through hole is formed in the second piston rod in a penetrating mode, and an oil through channel is formed in the left end face of the second piston rod in a sinking mode.

Further, still be equipped with the hydro-cylinder fixed knot who is used for fixing on the pressure boost pull rod hydro-cylinder and construct, hydro-cylinder fixed knot constructs including a plurality of pull rod bodies and pull rod nut, the pull rod body passes gland, front end housing, adapter sleeve and rear end cap's four corners department in proper order, and the equal threaded connection in pull rod body both ends has the cylinder nut that draws, and both sides pull rod nut is close to extrusion fixed gland, front end housing, adapter sleeve and rear end cap each other.

Furthermore, a vent pipe is further arranged inside the connecting sleeve, one end of the vent pipe is communicated to the second cylinder barrel, the other end of the vent pipe is communicated with the outside atmosphere, and an air valve is further arranged on the vent pipe of the connecting sleeve.

Furthermore, the side wall of the front end cover is provided with a first oil hole which can be communicated into the first cylinder barrel in a penetrating manner, and the side wall of the rear end cover is provided with a second oil hole which can be communicated into the second cylinder barrel in a penetrating manner.

Furthermore, a first wear-resisting ring and a second Weishi sealing ring are sleeved on the outer sides of the first piston and the second piston.

Furthermore, a first Y-shaped sealing ring and a second wear-resistant ring are arranged on the inner wall of the through hole, a guide sleeve is pressed in the pressing cover, and a second Y-shaped sealing ring is arranged on the inner wall of the guide sleeve.

Compared with the prior art, the utility model has the advantages that: the booster pull rod oil cylinder is provided with the plurality of pistons, so that the action area of the hydraulic oil on the force applied to the pistons is increased, the output pressure of the hydraulic cylinder is improved, and the air valve is arranged, so that the sucked external air is filtered, and impurities are prevented from entering the second cylinder barrel. Because the inside of the second piston rod is provided with the oil through hole in a penetrating way, hydraulic oil can be guided into the first cylinder barrel.

Drawings

Fig. 1 is a schematic structural diagram of a booster pull rod cylinder according to the present invention.

Fig. 2 is a schematic structural view of a connecting sleeve of a booster pull rod oil cylinder.

Fig. 3 is a schematic structural diagram of a piston rod II of the present invention.

As shown in the figure: 1. connecting sleeves; 2. a cylinder barrel I; 3. a cylinder barrel II; 4. a front end cover; 5. a rear end cap; 6. a gland; 7. a first piston rod; 8. a first piston; 9. a piston rod II; 10. a second piston; 11. a through hole; 12. an oil through hole; 13. an oil through channel; 14. a pull rod body; 15. a draw rod nut; 16. a breather pipe; 17. an air valve; 18. a first oil hole; 19. an oil hole II; 20. a first wear-resistant ring; 21. a Weishi seal ring; 22. a first Y-shaped seal ring; 23. a guide sleeve; 24. a second Y-shaped seal ring; 25. and a second wear-resistant ring.

Detailed Description

The following further describes embodiments of the present invention with reference to the accompanying drawings. In which like parts are designated by like reference numerals.

In the description of the present invention, it is to be understood that the terms "center", "lateral", "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first", "second" and "first" 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" or "second" 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. Furthermore, the term "comprises" and any variations thereof is intended to cover non-exclusive inclusions.

A pressurizing pull rod oil cylinder comprises a cylinder body structure and a piston structure, wherein the cylinder body structure comprises a cylinder barrel I2 and a cylinder barrel II 3 which are separated by a connecting sleeve 1, a front end cover 4 is arranged at the left end of the cylinder barrel I2, a rear end cover 5 is arranged at the right end of the cylinder barrel II 3, and a gland 6 for sealing is further arranged at the left side of the front end cover 4; still be equipped with on the pressure boost pull rod hydro-cylinder and be used for fixed hydro-cylinder fixed knot to construct, hydro-cylinder fixed knot constructs including a plurality of pull rod bodies 14 and pull rod nut 15, pull rod body 14 passes gland 6, front end housing 4, adapter sleeve 1 and rear end housing 5's four corners department in proper order, and the equal threaded connection in pull rod body 14 both ends has the cylinder nut that draws, and both sides pull rod nut 15 is close to extrusion fixed gland 6, front end housing 4, adapter sleeve 1 and rear end housing 5 each other.

The improved oil cylinder is characterized in that a first piston rod 7 is arranged in the first cylinder barrel 2, a first piston 8 is fixedly arranged at the right end of the first piston rod 7, a second piston rod 9 is arranged in the second cylinder barrel 3, a second piston 10 is fixedly arranged at the right end of the second piston rod 9, the connecting sleeve 1 is provided with a through hole 11 which communicates the first cylinder barrel 2 with the second cylinder barrel 3 in a penetrating manner, the left end of the second piston rod 9 penetrates through the through hole 11 to be abutted against the right end of the first piston rod 7, an oil through hole 12 is formed in the second piston rod 9 in a penetrating manner, and an oil through channel 13 is formed in the left end face of the second piston rod 9 in a sinking manner.

A vent pipe 16 is further arranged inside the connecting sleeve 1, one end of the vent pipe 16 is communicated with the second cylinder barrel 3, the other end of the vent pipe 16 is communicated with the outside atmosphere, and an air valve 17 is further arranged on the vent pipe 16 of the connecting sleeve 1. The side wall of the front end cover 4 is provided with a first oil hole 18 which can be communicated with the cylinder barrel I2 in a penetrating mode, and the side wall of the rear end cover 5 is provided with a second oil hole 19 which can be communicated with the cylinder barrel II 3 in a penetrating mode.

And a first wear-resisting ring 20 and a Weishi sealing ring 21 are sleeved on the outer sides of the first piston 8 and the second piston 10. A first Y-shaped sealing ring 22 and a second wear-resistant ring 25 are arranged on the inner wall of the through hole 11, a guide sleeve 23 is pressed in the gland 6, and a second Y-shaped sealing ring 24 is arranged on the inner wall of the guide sleeve 23.

The working principle is as follows: when the device is used, when hydraulic oil enters from the oil hole II 19, the hydraulic oil can push the piston II 10 to move, the oil through hole 12 penetrates through the piston rod II 9, and the hydraulic oil also penetrates through the oil through hole 12 and the oil through channel 13 to enter the cylinder I2, so that the hydraulic oil can apply thrust to the piston I8 at the same time, and according to F ═ P × S, the larger the stress area is under the same oil pressure, the larger the acting force is, therefore, the device can obtain higher thrust under the same diameter piston and oil pressure, and when the device is used, air on the left side of the piston II 10 is discharged along with the leftward movement of the piston II 10; when hydraulic oil enters from the first oil hole 18, the hydraulic oil acts on the left side of the first piston 8 by pressure, namely the first piston rod 7 and the second piston rod 9 are pushed back towards the right side, the hydraulic oil on the right side of the first piston 8 flows back to the second cylinder barrel 3 through the oil through channel 13 and the oil through hole 12 and then flows out from the second oil hole 19, meanwhile, when the second piston 10 moves rightwards, the left side of the second cylinder barrel 3 sucks in external air through the vent pipe 16, and the air valve 17 filters the air.

The present invention and the embodiments thereof have been described above, and the description is not restrictive, and the embodiments shown in the detailed description are only a part of the embodiments of the present invention, not all embodiments, and the actual configuration is not limited thereto. In summary, those skilled in the art should appreciate that they can readily use the disclosed conception and specific embodiments as a basis for designing or modifying other structures for carrying out the same purposes of the present invention without departing from the spirit and scope of the utility model as defined by the appended claims.

Claims

1. A pressurizing pull rod oil cylinder comprises a cylinder body structure and a piston structure and is characterized in that the cylinder body structure comprises a cylinder barrel I (2) and a cylinder barrel II (3) which are separated by a connecting sleeve (1), the left end of the cylinder barrel I (2) is provided with a front end cover (4), the right end of the cylinder barrel II (3) is provided with a rear end cover (5), and the left side of the front end cover (4) is also provided with a gland (6) for sealing; be equipped with piston rod (7) in cylinder (2), piston rod (7) right-hand member is fixed and is equipped with piston (8), be equipped with piston rod two (9) in cylinder two (3), piston rod two (9) right-hand member is fixed and is equipped with piston two (10), adapter sleeve (1) runs through and is equipped with perforating hole (11) with cylinder (2) and cylinder two (3) intercommunication, piston rod two (9) left end passes perforating hole (11) and offsets with piston rod one (7) right-hand member, piston rod two (9) inside link up and is equipped with logical oilhole (12), and piston rod two (9) left end face invagination is equipped with logical oil duct (13).

2. The supercharging pull rod oil cylinder according to claim 1, wherein an oil cylinder fixing structure for fixing is further arranged on the supercharging pull rod oil cylinder, the oil cylinder fixing structure comprises a plurality of pull rod bodies (14) and pull rod nuts (15), the pull rod bodies (14) sequentially penetrate through four corners of the gland (6), the front end cover (4), the connecting sleeve (1) and the rear end cover (5), the two ends of each pull rod body (14) are respectively in threaded connection with the pull cylinder nuts, and the pull rod nuts (15) on the two sides are close to each other to extrude the fixing gland (6), the front end cover (4), the connecting sleeve (1) and the rear end cover (5).

3. The booster draw-bar cylinder according to claim 1, characterized in that a vent pipe (16) is further arranged inside the connecting sleeve (1), one end of the vent pipe (16) is communicated to the second cylinder barrel (3), the other end is communicated with the outside atmosphere, and an air valve (17) is further arranged on the vent pipe (16) of the connecting sleeve (1).

4. The booster draw-bar cylinder according to claim 1, characterized in that the side wall of the front end cover (4) is provided with a first oil hole (18) which can be communicated into the first cylinder barrel (2), and the side wall of the rear end cover (5) is provided with a second oil hole (19) which can be communicated into the second cylinder barrel (3).

5. A booster draw-bar cylinder according to claim 1, characterised in that the first piston (8) and the second piston (10) are provided with a first wear ring (20) and a second weishi ring (21) on the outer side.

6. The booster draw-bar cylinder according to claim 1, characterized in that the inner wall of the through hole (11) is provided with a first Y-shaped sealing ring (22) and a second wear-resistant ring (25), a guide sleeve (23) is pressed in the gland (6), and the inner wall of the guide sleeve (23) is provided with a second Y-shaped sealing ring (24).