CN219529450U - Oil cylinder with multi-action function and hydraulic equipment - Google Patents

Abstract

The utility model discloses an oil cylinder with a multi-action function and hydraulic equipment, wherein the oil cylinder comprises: the cylinder barrel is provided with a first oil port, a second oil port and a third oil port; the piston mechanism is arranged in the cylinder barrel and is coaxially arranged with the cylinder barrel; the piston mechanism is formed with first cavity, second cavity and third cavity between the cylinder inner wall, and first hydraulic fluid port is linked together with first cavity, and the second hydraulic fluid port is linked together with the second cavity, and the third hydraulic fluid port is linked together with the third cavity. Therefore, through the mutual matching between the three oil ports and the three cavities, various actions can be realized, the space occupied by the oil cylinder in the hydraulic equipment can be reduced (from a plurality of oil cylinders to one oil cylinder), and the internal structure of the hydraulic equipment is simplified; and the cost is saved, and the control difficulty of the control system to the hydraulic equipment is reduced.

Description

Oil cylinder with multi-action function and hydraulic equipment

Technical Field

The utility model relates to the technical field of hydraulic pressure, in particular to an oil cylinder with a multi-action function and hydraulic equipment.

Background

The hydraulic cylinder is a hydraulic actuator that converts hydraulic energy into mechanical energy and performs linear reciprocating motion (or swinging motion). The device has simple structure and reliable operation. When it is used to realize reciprocating motion, it can eliminate speed reducer, and has no transmission clearance and smooth motion, so that it can be widely used in hydraulic systems of various machines.

Currently, some hydraulic apparatuses (for example, grinding integrated machines, spinning machines, etc.) need to provide a large load force when in operation, and grinding requires a high speed and also needs to realize advancing and retreating constant-speed motions. Conventionally, two or more than two oil cylinders are arranged to realize various actions, one oil cylinder provides a larger load force, and the other oil cylinder realizes constant-speed movement. In this way, each oil cylinder can only realize one action, and has a single function, which not only results in the increase of installation space and cost of equipment, but also has higher requirements on control precision of a hydraulic system.

Disclosure of Invention

The utility model aims to solve the technical problems that: in order to solve the technical problem of single function of the oil cylinder in the prior art, the utility model provides the oil cylinder with the multi-action function, which can realize multiple actions, reduce the space occupied by the oil cylinder in equipment, reduce the complexity of the equipment structure, save the cost and reduce the control difficulty.

The technical scheme adopted for solving the technical problems is as follows: an oil cylinder with multiple action functions, comprising: the cylinder barrel is provided with a first oil port, a second oil port and a third oil port; the piston mechanism is arranged in the cylinder barrel, and the piston mechanism and the cylinder barrel are coaxially arranged; the piston mechanism is characterized in that a first cavity, a second cavity and a third cavity are formed between the piston mechanism and the inner wall of the cylinder barrel, the first oil port is communicated with the first cavity, the second oil port is communicated with the second cavity, and the third oil port is communicated with the third cavity.

Therefore, through the mutual matching between the three oil ports and the three cavities, various actions can be realized, the space occupied by the oil cylinder in the hydraulic equipment can be reduced (from a plurality of oil cylinders to one oil cylinder), and the internal structure of the hydraulic equipment is simplified; and the cost is saved, and the control difficulty of the control system to the hydraulic equipment is reduced.

Further, the piston mechanism includes: the cylinder comprises a first piston, a first piston rod, a second piston and a second piston rod which are sequentially connected from left to right, wherein the outer wall of the first piston is in sealing connection with the inner wall of the cylinder barrel, and the outer wall of the second piston is in sealing connection with the inner wall of the cylinder barrel.

Further, the cylinder interior includes: the left cavity is communicated with the right cavity, and the inner diameter A of the left cavity is smaller than the inner diameter B of the right cavity.

Further, the outer diameter b of the first piston rod is smaller than the outer diameter a of the second piston rod.

Further, the inner diameter a of the left chamber is equal to the outer diameter a of the second piston rod.

Further, the outer diameter B of the first piston rod is smaller than the inner diameter A of the left chamber, and the outer diameter a of the second piston rod is smaller than the inner diameter B of the right chamber.

Further, the outer diameter of the first piston is matched with the inner diameter A of the left chamber, and the outer diameter of the second piston is matched with the inner diameter B of the right chamber.

Further, a first end cover is arranged on the left side of the cylinder barrel, a second end cover is arranged on the right side of the cylinder barrel, and the right end of the piston mechanism penetrates through the second end cover.

Further, the cylinder barrel is provided with a first oil way and a second oil way, and the second oil port is communicated with the second cavity through the first oil way; the third oil port is communicated with the third cavity through the second oil way.

The utility model also provides hydraulic equipment comprising the oil cylinder with the multi-action function.

The oil cylinder with the multi-action function has the beneficial effects that the oil cylinder with the multi-action function can realize multiple actions through the mutual matching of the three oil ports and the three cavities. The hydraulic device has a compact structure, can realize various actions through one oil cylinder, can reduce the space occupied by the oil cylinder in the hydraulic device and simplify the internal structure of the hydraulic device; and the cost is saved, and the control difficulty of the control system to the hydraulic equipment is reduced.

Drawings

The utility model will be further described with reference to the drawings and examples.

Fig. 1 is a perspective view of a cylinder of the present utility model.

Fig. 2 is a cross-sectional view of the cylinder of the present utility model.

Fig. 3 is another cross-sectional view of the cylinder of the present utility model.

Fig. 4 is a cross-sectional view of the cylinder barrel of the present utility model.

In the figure: 1. a cylinder; 2. a piston mechanism; 3. a first cavity; 4. a second cavity; 5. a third cavity; 6. a first end cap; 7. a second end cap; 11. a first oil port; 12. a second oil port; 13. a third oil port; 14. a left chamber; 15. a right chamber; 16. a first oil passage; 17. a second oil path; 21. a first piston; 22. a first piston rod; 23. a second piston; 24. and a second piston rod.

Detailed Description

The utility model will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic representations which merely illustrate the basic structure of the utility model and therefore show only the structures which are relevant to the utility model.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model. Furthermore, features defining "first", "second" may include one or more such features, either explicitly or implicitly. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

As shown in fig. 1 to 4, the cylinder with multi-action function of the present utility model includes: the cylinder barrel 1 and the piston mechanism 2, wherein a first oil port 11, a second oil port 12 and a third oil port 13 are formed in the cylinder barrel 1; the piston mechanism 2 is installed in the cylinder 1, and the piston mechanism 2 is coaxially arranged with the cylinder 1. Wherein, be formed with first cavity 3, second cavity 4 and third cavity 5 between piston mechanism 2 and the cylinder 1 inner wall, first hydraulic fluid port 11 is linked together with first cavity 3, and second hydraulic fluid port 12 is linked together with second cavity 4, and third hydraulic fluid port 13 is linked together with third cavity 5. In other words, the oil cylinder provided by the utility model is provided with three oil ports and three cavities, and fast forward, fast backward and constant speed actions can be realized through the mutual matching between the three oil ports and the three cavities. The hydraulic device has a compact structure, can realize various actions through one oil cylinder, not only can reduce the space occupied by the oil cylinder in the hydraulic device (from a plurality of oil cylinders to one oil cylinder), but also can simplify the internal structure of the hydraulic device; and the cost is saved, and the control difficulty of the control system to the hydraulic equipment is reduced.

Specifically, the piston mechanism 2 includes: the first piston 21, the first piston rod 22, the second piston 23 and the second piston rod 24 are sequentially connected from left to right, the outer wall of the first piston 21 is in sealing connection with the inner wall of the cylinder barrel 1, and the outer wall of the second piston 23 is in sealing connection with the inner wall of the cylinder barrel 1. The cylinder 1 includes inside: left chamber 14 and right chamber 15, left chamber 14 communicates with right chamber 15, and inner diameter a of left chamber 14 is smaller than inner diameter B of right chamber 15. In other words, the interior of the cylinder 1 is divided into two chambers of different sizes, in the initial state, the first piston 21 and the first piston rod 22 are both located in the left chamber 14, and the second piston 23 and the second piston rod 24 are both located in the right chamber 15. Because the outer wall of the first piston 21 is in sealing connection with the inner wall of the cylinder 1, the outer wall of the second piston 23 is in sealing connection with the inner wall of the cylinder 1, so that a first cavity 3 is formed between the left end face of the first piston 21 and the inner wall of the cylinder 1, a second cavity 4 is formed by the right end face of the first piston 21, the outer wall of the first piston rod 22, the inner wall of the cylinder 1 and the left end face of the second piston 23, and a third cavity 5 is formed by the right end face of the second piston 23, the inner wall of the cylinder 1 and the outer wall of the second piston rod 24. The outer diameter of the first piston 21 matches the inner diameter a of the left chamber 14 and the outer diameter of the second piston 23 matches the inner diameter B of the right chamber 15.

For example, the outer diameter b of the first piston rod 22 is smaller than the outer diameter a of the second piston rod 24. The first piston rod 22 has an outer diameter B that is smaller than the inner diameter a of the left chamber 14 and the second piston rod 24 has an outer diameter a that is smaller than the inner diameter B of the right chamber 15. The active area of the first chamber 3 isThe area of action of the second chamber 4 is +.>The area of action of the third chamber 5 is +.>When the second oil port 12 is filled with oil, the oil enters the second cavity 4 to enable the piston mechanism 2 to move rightwards, and at the moment, the acting area is +.>The load force is smaller, and the fast-forward action can be realized. When the oil cylinder works under the condition of needing larger load force, the oil cylinder is switched to the high-pressure oil inlet of the first oil port 11, and the acting area is +.>A large load force can be formed to continuously push the piston mechanism 2 to move rightwards, so that the work-in action is realized. When the rightward movement stroke of the oil cylinder is finished, the oil cylinder is switched to the third oil port 13 for oil feeding, and the action area is +.>The action area is smaller, and the quick return action can be realized. Therefore, three actions of fast forward, fast forward and fast backward of the oil cylinder can be realized. For example, a=180 mm, b=175 mm, a=180 mm, b=200 mm.

For example, the inner diameter a of the left chamber 14 is equal to the outer diameter a of the second piston rod 24. When the second oil port 12 is filled with oil, the first oil port 11 passively sucks oil, at this time, the piston mechanism 2 moves rightward due to the annular action area S1 formed by the inner diameter B of the right chamber 15 and the outer diameter B of the first piston rod 22, and meanwhile, the piston mechanism 2 moves leftward due to the annular action area S2 formed by the inner diameter a of the left chamber 14 and the outer diameter B of the first piston rod 22, and because the oil pressure of the closed space is equal and S1 > S2, the piston mechanism 2 finally moves rightward (the actual action area is). When the third oil port 13 is filled with oil, the second oil port 12 returns oil, and at this time, the piston mechanism 2 moves leftwards due to the annular action area formed by the inner diameter B of the right chamber 15 and the outer diameter a of the second piston rod 24. Thus, if the constant speed operation is desired, the left and right acting surfacesThe products should be the same, i.eThe inner diameter a of the left chamber 14 and the outer diameter a of the second piston rod 24 should be equal.

For example, the left side of the cylinder 1 is provided with a first end cap 6, the right side of the cylinder 1 is provided with a second end cap 7, and the right end of the piston mechanism 2 penetrates the second end cap 7. That is, the first end cap 6 and the second end cap 7 seal the left and right ends of the cylinder tube 1 to form an oil chamber, and the right end of the second piston rod 24 penetrates the second end cap 7 to output force. The cylinder barrel 1 is provided with a first oil way 16 and a second oil way 17, the second oil port 12 is communicated with the second cavity 4 through the first oil way 16, and the third oil port 13 is communicated with the third cavity 5 through the second oil way 17.

The working process of the utility model is that,

when the second oil port 12 is filled with oil, the oil enters the second cavity 4 to enable the piston mechanism 2 to move rightwards, and at the moment, the oil enters the second cavity due to the action areaThe device is small, and the quick-forward action of the oil cylinder can be realized.

When the oil cylinder moves to the right to a certain stroke, the oil cylinder is assembled with a load, and the load is driven to move by a large thrust, and the oil cylinder is switched to a first oil port 11 for high-pressure oil feeding, and the oil cylinder is provided with an action areaThe large oil cylinder can form a large thrust to continuously push the piston mechanism 2 to move rightwards, so that the working action is realized, and the load is processed.

After the load processing is completed, the third oil port 13 is switched to be filled with oil, and the working area is as followsThe device is small, and the quick-return action of the oil cylinder can be realized.

Since the inner diameter a of the left chamber 14 is equal to the outer diameter a of the second piston rod 24, the area of actionCan be practically usedThe oil cylinder acts at the same speed, so that the high-speed and constant-speed processing requirement of equipment is met.

The utility model also provides hydraulic equipment, which comprises the oil cylinder with the multi-action function.

In summary, according to the oil cylinder with the multi-action function, through improvement of the structure of the oil cylinder, one oil cylinder can realize multiple actions (fast forward, working, fast backward and constant speed), on one hand, the structure in the hydraulic equipment can be simplified, the space occupied by the oil cylinder is reduced, and the cost is saved; on the other hand, the number of the control system control oil cylinders can be reduced, the control difficulty is reduced, and the working efficiency of the oil cylinders can be improved. With the above-described preferred embodiments according to the present utility model as an illustration, the above-described descriptions can be used by persons skilled in the relevant art to make various changes and modifications without departing from the scope of the technical idea of the present utility model. The technical scope of the present utility model is not limited to the description, but must be determined as the scope of the claims.

Claims (10)

1. An oil cylinder with a multi-action function, which is characterized by comprising:

the cylinder barrel (1) and the piston mechanism (2), wherein a first oil port (11), a second oil port (12) and a third oil port (13) are formed in the cylinder barrel (1); the piston mechanism (2) is arranged in the cylinder barrel (1), and the piston mechanism (2) and the cylinder barrel (1) are coaxially arranged;

the piston mechanism (2) and be formed with first cavity (3), second cavity (4) and third cavity (5) between cylinder (1) inner wall, first hydraulic fluid port (11) with first cavity (3) are linked together, second hydraulic fluid port (12) with second cavity (4) are linked together, third hydraulic fluid port (13) with third cavity (5) are linked together.

2. The cylinder according to claim 1, characterized in that the piston mechanism (2) comprises: the cylinder barrel comprises a first piston (21), a first piston rod (22), a second piston (23) and a second piston rod (24) which are sequentially connected from left to right, wherein the outer wall of the first piston (21) is in sealing connection with the inner wall of the cylinder barrel (1), and the outer wall of the second piston (23) is in sealing connection with the inner wall of the cylinder barrel (1).

3. The cylinder according to claim 2, characterized in that the cylinder tube (1) comprises inside: a left chamber (14) and a right chamber (15), wherein the left chamber (14) is communicated with the right chamber (15), and the inner diameter A of the left chamber (14) is smaller than the inner diameter B of the right chamber (15).

4. A cylinder according to claim 3, characterized in that the outer diameter b of the first piston rod (22) is smaller than the outer diameter a of the second piston rod (24).

5. A cylinder according to claim 4, characterized in that the inner diameter a of the left chamber (14) is equal to the outer diameter a of the second piston rod (24).

6. The cylinder according to claim 4, characterized in that the outer diameter B of the first piston rod (22) is smaller than the inner diameter a of the left chamber (14), and the outer diameter a of the second piston rod (24) is smaller than the inner diameter B of the right chamber (15).

7. A cylinder as claimed in claim 3, characterized in that the outer diameter of the first piston (21) matches the inner diameter a of the left chamber (14) and the outer diameter of the second piston (23) matches the inner diameter B of the right chamber (15).

8. The oil cylinder according to claim 1, characterized in that a first end cover (6) is arranged on the left side of the cylinder barrel (1), a second end cover (7) is arranged on the right side of the cylinder barrel (1), and the right end of the piston mechanism (2) penetrates through the second end cover (7).

9. The cylinder according to claim 1, characterized in that the cylinder (1) is provided with a first oil passage (16) and a second oil passage (17), the second oil port (12) being in communication with the second chamber (4) through the first oil passage (16); the third oil port (13) is communicated with the third cavity (5) through the second oil path (17).

10. A hydraulic apparatus comprising the cylinder having a multi-action function according to any one of claims 1 to 9.