CN219317311U

CN219317311U - Novel booster cylinder

Info

Publication number: CN219317311U
Application number: CN202320112799.8U
Authority: CN
Inventors: 邱永宁; 聂金顺; 苏雪平
Original assignee: Jiangsu Hengli Hydraulic Co Ltd
Current assignee: Jiangsu Hengli Hydraulic Co Ltd
Priority date: 2023-01-16
Filing date: 2023-01-16
Publication date: 2023-07-07
Anticipated expiration: 2033-01-16

Abstract

The utility model discloses a novel booster cylinder, which comprises a piston rod and two cylinders, wherein the middle parts of the two cylinders are connected through end covers, and the ends of the two cylinders, which are far away from the end covers, are respectively provided with a cylinder bottom; the piston rod is slidably connected in the center of the end cover in a penetrating manner, pistons are arranged at two ends of the piston rod, and the two pistons are slidably matched in the two cylinders respectively; a large cavity is formed among the cylinder bottom, the cylinder body and the piston, and a small cavity is formed among the end cover, the cylinder body and the piston; the piston rod can move back and forth in the two cylinders in a reversing way, and high-pressure oil supply is performed through small cavity wheels on two sides. The utility model can realize the back and forth reversing of the two large cavities, and the two small cavities continuously supply high-pressure oil to the hydraulic cylinder, thereby meeting higher pressurizing requirements.

Description

Novel booster cylinder

Technical Field

The utility model relates to the technical field of hydraulic cylinders, in particular to a novel booster cylinder.

Background

The booster cylinder is a hydraulic element that changes the input pressure and outputs the pressure at a higher pressure. I.e. the large chamber is the input low pressure chamber and the small chamber is the output high pressure chamber. According to the pascal principle, the stress ratio of the large cavity to the small cavity is the area ratio of the two.

In general, the booster cylinder comprises a cylinder body and a piston rod, a rodless cavity between the piston and the cylinder bottom is a large cavity, a rod cavity between the piston and the end cover is a small cavity, an oil inlet of the large cavity is connected with the hydraulic system, and an output port of the small cavity is connected with the hydraulic cylinder needing high-pressure oil. However, the conventional booster cylinder is a common hydraulic cylinder, the stroke is smaller, the cylinder cannot continuously output high-pressure hydraulic oil, namely, a piston rod can only output high-pressure oil when moving unidirectionally, and the piston rod is intermittent and does not output high-pressure oil when reversing, so that when the high-pressure cylinder needs more hydraulic oil, the conventional booster cylinder cannot meet the use requirement.

Disclosure of Invention

The utility model aims to solve the technical problem of overcoming the defects of the prior art and providing a novel booster oil cylinder, which can realize the back and forth reversing of two large cavities and continuously supply high-pressure oil to a hydraulic oil cylinder through two small cavities.

In order to solve the technical problems, the technical scheme of the utility model is as follows:

the novel booster oil cylinder comprises a piston rod and two cylinder bodies, wherein the middle parts of the two cylinder bodies are connected through end covers, and the ends, far away from the end covers, of the two cylinder bodies are provided with cylinder bottoms;

the piston rod is slidably connected in the center of the end cover in a penetrating manner, pistons are arranged at two ends of the piston rod, and the two pistons are slidably matched in the two cylinders respectively;

a large cavity is formed among the cylinder bottom, the cylinder body and the piston, and a small cavity is formed among the end cover, the cylinder body and the piston;

the piston rod can move back and forth in the two cylinders in a reversing way, and high-pressure oil supply is performed through small cavity wheels on two sides.

Further, the two cylinder bottoms are provided with first oil ports which are communicated with the large cavity and used for oil inlet and oil return.

Further, two second oil ports which are respectively communicated with the two small cavities and used for outputting high-pressure oil are formed in the end cover.

Further, each large cavity is communicated with the small cavity in the other end cylinder body in a one-way.

Further, two oil passing holes are formed in the piston rod, and each oil passing hole is communicated with the large cavity and the small cavity in the cylinder body at the other end in one direction.

Furthermore, the two oil passing holes are internally provided with one-way valves, and the one-way valves can only allow the hydraulic oil to circulate from the large cavity to the small cavity.

By adopting the technical scheme, the utility model has the following beneficial effects:

the utility model is different from the traditional booster cylinder, two cylinder bodies and one end cover are connected, the two cylinder bodies are matched with the piston rods with pistons at the two ends, the structure of two large cavities and two small cavities is successfully formed, and the oil inlet in the small cavities is ensured by virtue of the oil passing holes in the piston rods and the one-way valves, so that high-pressure oil can be output through the small cavities no matter in which direction the piston rods move during working, namely, the reciprocating motion of the piston rods is just the reversing of the large cavities, and the two small cavities can continuously supply high-pressure oil to the hydraulic cylinder, so that the hydraulic cylinder can work more efficiently and meet higher boosting requirements.

Drawings

FIG. 1 is a schematic diagram of a conventional booster cylinder in the prior art;

FIG. 2 is a schematic view of the structure of the booster cylinder of the present utility model;

FIG. 3 is a hydraulic schematic of the present utility model;

wherein, 1, a piston rod; 100. an oil passing hole; 2. a cylinder; 201. a large cavity; 202. a small cavity; 3. an end cap; 300. a second oil port; 4. a cylinder bottom; 400. a first oil port; 5. a piston; 6. a one-way valve; 11. a conventional piston rod; 22. a conventional cylinder; 33. a conventional end cap; 44. a conventional cylinder bottom.

Detailed Description

In order that the utility model may be more readily understood, a more particular description of the utility model will be rendered by reference to specific embodiments that are illustrated in the appended drawings.

As shown in fig. 1, the conventional booster cylinder structure in the prior art is generally composed of a conventional cylinder body 22 and a conventional piston rod 11, wherein the left end of the conventional cylinder body 22 is a conventional cylinder bottom 44, the right end is a conventional end cover 33, a rodless cavity between the piston and the conventional cylinder bottom 44 is a large cavity, and a rod cavity between the piston and the conventional end cover 33 is a small cavity, so that the booster cylinder can be used for boosting and outputting high-pressure oil due to the small cross-sectional area of the small cavity. However, the stroke of the conventional booster cylinder is smaller, the cylinder cannot continuously output high-pressure hydraulic oil, namely, the conventional piston rod 11 can only output high-pressure oil when moving rightwards, but is discontinuous when moving leftwards, and no high-pressure oil is output, so that when the hydraulic oil is needed by the high-pressure cylinder, the booster cylinder cannot meet the use requirement.

In view of the above-mentioned drawbacks of the prior art, this embodiment is designed as follows:

as shown in fig. 2 and 3, in the present embodiment, a novel booster cylinder is provided, which mainly comprises a piston rod 1, two cylinders 2 and the like; the two cylinders 2 are connected through an end cover 3, and cylinder bottoms 4 are arranged at one ends of the two cylinders 2 far away from the end cover 3; the piston rod 1 is slidably connected in the center of the end cover 3, the two ends of the piston rod 1 are respectively provided with a piston 5, and the two pistons 5 are respectively slidably matched in the two cylinders 2.

Through the structure, the large cavity 201 is formed by the rodless cavity among the cylinder bottom 4, the cylinder bodies 2 and the pistons 5, the small cavity 202 is formed by the end cover 3, the rod cavity among the cylinder bodies 2 and the pistons 5, and the two large cavities 201 and the two small cavities 202 are formed finally in the two cylinder bodies 2.

Of course, the first oil ports 400 are respectively formed in the two cylinder bottoms 4, the first oil ports 400 are communicated with the large cavity 201 and used for oil inlet and oil return, and the first oil ports 400 are connected with a hydraulic system in operation. Two second oil ports 300 are formed in the end cover 3, the two second oil ports 300 are respectively communicated with the two small cavities 202 and used for outputting high-pressure oil, and the second oil ports 300 are connected with a hydraulic cylinder needing the high-pressure oil in operation.

In addition, the large chamber 201 on each side needs to be in one-way communication with the small chamber 202 in the other end cylinder 2. Referring to fig. 2, two oil passing holes 100 are formed in the piston rod 1, and each oil passing hole 100 is communicated with a large cavity 201 and a small cavity 202 in the cylinder body 2 at the other end in one direction; referring to fig. 2 and 3, the two oil passing holes 100 are provided with the check valve 6, and the check valve 6 can only allow the hydraulic oil to circulate from the large cavity 201 to the small cavity 202, so that when one small cavity 202 works and pressurizes at a time, the other small cavity 202 can enter oil through the oil passing hole 100, and the pressurization work of the two small cavities 202 circulating back and forth is ensured.

Referring to fig. 2 and 3, in the working process of the present embodiment, two first oil ports 400 respectively perform oil inlet and oil return, so as to push the piston rod 1 to implement left-right reciprocating motion; when the first oil port 400 on the left is used for oil feeding and the first oil port 400 on the right is used for oil returning, the piston rod 1 moves rightward, high-pressure oil is output from the second oil port 300 on the left through pushing the small cavity 202 on the left, so that pressurization is completed, and meanwhile, oil in the large cavity 201 on the left can enter the small cavity 202 on the right along the oil passing hole 100 and the one-way valve 6 on the lower side, so that next round of pressurization is provided; when one round of pressurization is completed, namely the piston rod 1 moves to the rightmost end, at the moment, the switching direction is used for oil feeding from the first oil port 400 on the right and oil returning from the first oil port 400 on the left, the piston rod 1 moves leftwards, high-pressure oil is output from the second oil port 300 on the right through pushing the small cavity 202 on the right, so that pressurization is completed, and meanwhile, oil in the large cavity 201 on the right can enter the small cavity 202 on the left along the oil passing hole 100 and the one-way valve 6 on the upper side, so that next round of pressurization is realized; and when the two-wheel supercharging is completed, namely the piston rod 1 moves to the leftmost end, repeating the above step principle to carry out the cyclic supercharging work. By design, the piston rod 1 can move back and forth in the two cylinders 2 in a reversing way, and high-pressure oil supply is performed through the small cavity 202 wheel replacement at the two sides, so that no matter which direction the piston rod 1 moves to, high-pressure oil can be output through the small cavity 202, namely, the back and forth reciprocating movement of the piston rod 1 is just the reversing of the large cavity, and the two small cavities 202 can continuously supply high-pressure oil to the hydraulic cylinder, so that the hydraulic cylinder can work more efficiently and meet higher pressurizing requirements.

In the description of the present specification, the descriptions of the terms "one embodiment," "example," "specific example," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The technical problems, technical solutions and beneficial effects that the present utility model solves are further described in detail in the above specific embodiments, it should be understood that the above description is only specific embodiments of the present utility model and is not intended to limit the present utility model, and any modifications, equivalent substitutions, improvements, etc. that fall within the spirit and principles of the present utility model should be included in the scope of protection of the present utility model.

Claims

1. The utility model provides a novel booster cylinder which characterized in that: the cylinder comprises a piston rod (1) and two cylinders (2), wherein the two cylinders (2) are connected through an end cover (3), and one ends of the two cylinders (2) far away from the end cover (3) are respectively provided with a cylinder bottom (4);

the piston rod (1) is slidably connected in the center of the end cover (3), two ends of the piston rod (1) are provided with pistons (5), and the two pistons (5) are slidably matched in the two cylinder bodies (2) respectively;

a large cavity (201) is formed among the cylinder bottom (4), the cylinder body (2) and the piston (5), and a small cavity (202) is formed among the end cover (3), the cylinder body (2) and the piston (5);

the piston rod (1) can move back and forth in the two cylinder bodies (2) in a reversing way, and high-pressure oil supply is performed through rotation of small cavities (202) at two sides.

2. The novel booster cylinder as defined in claim 1, wherein: the two cylinder bottoms (4) are provided with first oil ports (400) which are communicated with the large cavity (201) and used for oil inlet and oil return.

3. The novel booster cylinder as defined in claim 1, wherein: two second oil ports (300) which are respectively communicated with the two small cavities (202) and are used for outputting high-pressure oil are formed in the end cover (3).

4. The novel booster cylinder as defined in claim 1, wherein: each large cavity (201) is communicated with a small cavity (202) in the other end cylinder body (2) in a one-way.

5. The novel booster cylinder of claim 4, wherein: two oil passing holes (100) are formed in the piston rod (1), and each oil passing hole (100) is communicated with a large cavity (201) and a small cavity (202) in the cylinder body (2) at the other end in one direction.

6. The novel booster cylinder of claim 5, wherein: the two oil passing holes (100) are internally provided with one-way valves (6), and the one-way valves (6) can only allow the hydraulic oil to circulate from the large cavity (201) to the small cavity (202).