CN215861032U - Cylinder and gas-liquid supercharging device - Google Patents
Cylinder and gas-liquid supercharging device Download PDFInfo
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- CN215861032U CN215861032U CN202122005158.6U CN202122005158U CN215861032U CN 215861032 U CN215861032 U CN 215861032U CN 202122005158 U CN202122005158 U CN 202122005158U CN 215861032 U CN215861032 U CN 215861032U
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Abstract
The utility model discloses an air cylinder and a gas-liquid supercharging device, which comprises a first cylinder barrel, a second cylinder barrel, a piston rod, a piston and an intermediate connecting rod connected between the piston and the piston rod, wherein the diameter of the piston rod is smaller than that of the intermediate connecting rod, and the diameter of the intermediate connecting rod is smaller than that of the piston. According to the cylinder and the gas-liquid supercharging device disclosed by the utility model, the intermediate connecting rod is connected between the piston and the piston rod, and the diameter of the intermediate connecting rod is larger than that of the piston rod, so that the volume of a gas chamber between the intermediate connecting rod and the second cylinder is reduced, the inflation quantity required during the return stroke of the piston can be reduced, the gas consumption is reduced, the stress of the return stroke of the piston is reduced, the impact force is reduced, and the noise generated during the return stroke of the piston is reduced.
Description
Technical Field
The utility model relates to the technical field of pressure cylinders, in particular to an air cylinder and a gas-liquid pressure device.
Background
Superchargers are used in various press machines. The gas-liquid supercharger can provide a high-pressure power source, a large-area piston is pushed by using lower gas source pressure, the piston drives a small-area piston rod (supercharging rod) to extend out and push hydraulic oil in the oil cylinder, the hydraulic oil is compressed to form high-pressure hydraulic oil, and the high-pressure hydraulic oil drives other execution elements to actuate.
In the cylinder in the prior art, a piston rod (a pressure increasing rod) is directly connected with a piston, the piston rod is thin, the volume of an air chamber between the piston rod and a cylinder body is large, and when the piston is reset, the required inflation amount is large and the air consumption amount is large.
In view of the above, it is necessary to provide a cylinder and a gas-liquid supercharging device that can reduce the amount of gas consumed by the return stroke of the piston.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a cylinder and a gas-liquid supercharging device which can reduce the return gas consumption of a piston.
The technical scheme of the utility model provides an air cylinder which comprises a first cylinder barrel with a first air vent, a second cylinder barrel with a second air vent and a third air vent, a piston rod which is slidably arranged in the first cylinder barrel and can extend out of the first cylinder barrel, a piston which is hermetically arranged in the second cylinder barrel and can slide in the second cylinder barrel, and an intermediate connecting rod which is connected between the piston rod and the piston rod;
the second vent and the third vent are positioned on opposite sides of the piston, and the second vent is positioned between the first vent and the third vent;
a cylinder barrel channel is arranged between the second cylinder barrel and the first cylinder barrel, and the middle connecting rod penetrates through the cylinder barrel channel;
wherein the diameter of the piston rod is smaller than the diameter of the intermediate connecting rod, which is smaller than the diameter of the piston.
In one optional technical scheme, a first end cover is arranged at one end, far away from the second cylinder, of the first cylinder, and a through hole for the piston rod to pass through is formed in the first end cover;
the first vent is disposed on the first end cap.
In one optional technical scheme, a second end cover is connected between the first cylinder and the second cylinder, and the cylinder channel penetrates through the second end cover;
the second vent is disposed on the second end cap.
In an optional technical scheme, one end, far away from the first cylinder, of the second cylinder is provided with a third end cover;
the third vent is disposed on the third end cap.
In an optional technical solution, an end cap link is connected between the first end cap, the second end cap and the third end cap.
In one optional technical scheme, a silencer is arranged on the first air vent.
In an alternative embodiment, a cushion is disposed on the piston.
In one optional technical scheme, foot seats are respectively installed at the bottoms of the first cylinder barrel and the second cylinder barrel.
The technical scheme of the utility model also provides a gas-liquid supercharging device which comprises an oil cylinder and any one of the cylinders;
the oil cylinder is internally provided with an oil cavity, and the oil cylinder is provided with an oil outlet communicated with the oil cavity;
the oil cylinder is connected with the first cylinder barrel, and one end of the oil cavity, facing the first cylinder barrel, is provided with an oil cavity opening for the piston rod to enter and exit the oil cavity;
the cylinder has an initial state and a working state;
when the cylinder is in the initial state, the piston rod is in a retracted state, and the piston rod leaves the oil cavity;
when the air cylinder is in the working state, the piston rod is in an extending state, and the piston rod is inserted into the oil cavity.
In an optional technical scheme, the gas-liquid supercharging device further comprises an oil supplementing pot for supplementing oil into the oil cavity.
By adopting the technical scheme, the method has the following beneficial effects:
according to the cylinder and the gas-liquid supercharging device provided by the utility model, the intermediate connecting rod is connected between the piston and the piston rod, and the diameter of the intermediate connecting rod is larger than that of the piston rod, so that the volume of a gas chamber between the intermediate connecting rod and the second cylinder is reduced, the inflation quantity required during the return stroke of the piston can be reduced, the gas consumption is reduced, the stress of the return stroke of the piston is reduced, the impact force is reduced, and the noise generated during the return stroke of the piston is reduced.
Drawings
FIG. 1 is a perspective view of a cylinder provided in accordance with an embodiment of the present invention;
FIG. 2 is a cross-sectional view of the cylinder with the piston rod in a retracted state;
FIG. 3 is a cross-sectional view of the cylinder with the piston rod in an extended state;
FIG. 4 is a cross-sectional view of the first end cap, the first cylinder, the second end cap, the second cylinder, and the third end cap assembled together;
FIG. 5 is a cross-sectional view of the first end cap taken perpendicular to the axial direction;
fig. 6 is a perspective view of a gas-liquid pressure increasing device according to an embodiment of the present invention;
FIG. 7 is a cross-sectional view of the gas-liquid booster when the cylinder is in the initial state;
fig. 8 is a sectional view of the gas-liquid pressurizing device when the cylinder is in an operating state.
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. It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.
As shown in fig. 1 to 5, an embodiment of the present invention provides a cylinder including a first cylinder 1 having a first vent 112, a second cylinder 2 having a second vent 211 and a third vent 221, a piston rod 3 slidably disposed in the first cylinder 1 and capable of protruding from the first cylinder 1, a piston 4 sealingly disposed in the second cylinder 2 and capable of sliding in the second cylinder 2, and an intermediate link 5 connected between the piston rod 3 and the piston rod 4.
The second vent 211 and the third vent 221 are located on opposite sides of the piston 4, and the second vent 211 is located between the first vent 112 and the third vent 221.
A cylinder passage 212 is provided between the second cylinder 2 and the first cylinder 1, and the intermediate link 5 passes through the cylinder passage 212.
Wherein the diameter of the piston rod 3 is smaller than that of the intermediate connecting rod 5, and the diameter of the intermediate connecting rod 5 is smaller than that of the piston 4.
The cylinder and the oil cylinder provided by the utility model can form a gas-liquid supercharging device, and the cylinder can supercharge hydraulic oil in the oil cylinder to drive the actuating element to actuate.
The cylinder comprises a first cylinder barrel 1, a second cylinder barrel 2, a piston rod 3, a piston 4 and an intermediate connecting rod 5.
The front end of the first cylinder barrel 1 is provided with an end cover, the rear end of the second cylinder barrel 2 is provided with an end cover, and the rear end of the first cylinder barrel 1 is connected with the front end of the second cylinder barrel 2. A cylinder passage 212 is provided between the first cylinder 1 and the second cylinder 2, and the cylinder passage 212 is used for the intermediate link 5 to pass through.
A piston rod 3 is disposed in the first cylinder tube 1, and it can project forward from the first cylinder tube 1 to be inserted into an oil chamber of the cylinder, thereby pressurizing hydraulic oil in the oil chamber.
The piston 4 is sealingly arranged in the second cylinder 2, and the piston 4 is slidable back and forth in the second cylinder 2.
The middle connecting rod 5 passes through the cylinder passage 212, the rear end of the middle connecting rod 5 is connected with the piston 4, and the front end of the middle connecting rod 5 is connected with the piston rod 3.
The diameter of the intermediate link 5 is larger than that of the piston rod 3, and the diameter of the intermediate link 5 is slightly smaller than that of the piston 4, so as to minimize an air chamber 20 formed between the intermediate link 5 and the second cylinder 2 when the piston 4 returns.
The first cylinder 1 has a first air vent 112, and the first air vent 112 is preferably provided at the front end of the first cylinder 1. The second cylinder 2 has a second vent 211 at the front end thereof and a second vent 221 at the rear end thereof.
The first vent 112, the second vent 211 and the second vent 221 can be used for air intake or exhaust according to actual needs. The air inlet and exhaust control can be realized by installing an electromagnetic valve in the air vent.
The cylinder has an initial state and an operating state. In the initial state, the piston 4 is returned to the initial position, i.e., to the rear end of the second cylinder 2, and the piston rod 3 is retracted into the first cylinder 1. In the working state, the third air port 221 is used for air intake, the second air port 211 is used for air exhaust, the first air port 112 is used for air exhaust, the air pushes the piston 4 to move towards the first cylinder barrel 1 side, and the piston 4 drives the piston rod 3 to extend out of the first cylinder barrel 1 through the middle connecting rod 5, so that the piston 4 is inserted into an oil cavity of the oil cylinder to pressurize hydraulic oil in the oil cavity. According to the Pascal law, the pressure of the gas is unchanged, and the area of the piston 4 is larger than that of the piston rod 3, so that the pressure of the piston rod 3 acting in the oil cavity is increased, and a supercharging effect is achieved. When the cylinder is switched from the operating state to the initial state, the third vent 221 is exhausted, the second vent 211 is exhausted, and the gas entering the gas chamber 20 from the second vent 211 pushes the piston 4 to be reset. Due to the existence of the thick middle connecting rod 5, the volume of the air chamber 20 is reduced, the required inflation amount during the return stroke of the piston 4 can be reduced, the air consumption during the return stroke of the piston 4 is reduced, the return stroke stress of the piston 4 is reduced, the impact force with the rear end of the second cylinder barrel 2 is reduced, and the noise generated during the return stroke of the piston 4 is reduced.
In one embodiment, as shown in fig. 1 to 5, the end of the first cylinder 1 away from the second cylinder 2 has a first end cap 11, and the first end cap 11 is provided with a through hole 111 for the piston rod 3 to pass through. The first vent 112 is provided on the first end cap 11.
In this embodiment, a first end cap 11 is attached to the front end of the first cylinder tube 1. The first end cap 11 has an end cap through hole 111 for the piston rod 3 to pass through. The first vent 112 is provided on the first end cap 11. The first end cap 11 is further provided with a communication channel 113 for communicating the oil supply pot 9 and the oil chamber 81 as shown in fig. 6-8.
In one embodiment, as shown in fig. 1-4, a second end cap 21 is connected between the first cylinder 1 and the second cylinder 2, and the cylinder channel 212 passes through the second end cap 21. The second vent 211 is provided in the second end cap 21.
Specifically, the second end cap 21 is disposed at the front end of the second cylinder 2, and the rear end of the first cylinder 1 is connected to the second end cap 21. The cylinder passage 212 is a through hole provided on the second end cover 21. The second vent 211 is provided at the top of the second end cap 21.
In one embodiment, as shown in figures 1-4, the end of the second cylinder 2 remote from the first cylinder 1 has a third end cap 22. The third vent 221 is provided on the third end cap 22.
Specifically, the third end cap 22 is provided at the rear end of the second cylinder 2, and the third vent port 221 is provided at the top of the third end cap 22. When the piston 4 returns, the piston 4 contacts the third end cap 22.
In one embodiment, as shown in fig. 1, the end cap link 6 is connected between the first end cap 11, the second end cap 21 and the third end cap 22, so as to improve the structural stability.
In one embodiment, as shown in fig. 1 and 5, the first air vent 112 has a silencer 13 thereon to reduce noise when the first air vent 112 exhausts.
In one embodiment, a cushion pad is disposed on the piston 4, and the cushion pad is a rubber pad disposed at the rear side of the piston 4. When the piston 4 is reset, the buffer pad is contacted with the third end cover 22, and the buffer pad plays a role in buffering and reducing noise.
In one embodiment, as shown in fig. 1, the bottom of the first cylinder 1 and the bottom of the second cylinder 2 are respectively provided with a foot seat 7 for conveniently placing the cylinder.
As shown in fig. 6 to 8, an embodiment of the present invention provides a gas-liquid pressure boosting device, which includes a cylinder 8 and a cylinder according to any of the foregoing embodiments.
The oil cylinder 8 is provided with an oil chamber 81 therein, and the oil cylinder 8 is provided with an oil outlet 82 communicated with the oil chamber 81.
The cylinder 8 is connected to the first cylinder 1, and an end of the oil chamber 81 facing the first cylinder 1 has an oil chamber opening 811 for the piston rod 3 to enter and exit the oil chamber 81.
The cylinder has an initial state and an operating state. When the cylinder is in the initial state, the piston rod 3 is in the retracted state, and the piston rod 3 is away from the oil chamber 81.
When the cylinder is in the operating state, the piston rod 8 is in the extended state, and the piston rod 8 is inserted into the oil chamber 81.
The gas-liquid supercharging device provided by the utility model comprises an oil cylinder 8 and an air cylinder.
For the structure, structure and function of the cylinder, please refer to the description of the cylinder, and further description is omitted here.
The cylinder 8 is mounted at the front end of the first cylinder tube 1, and in particular, it may be bolted to the first end cap 11. The cylinder 8 has an oil chamber 81 therein, and the oil chamber 81 extends forward and backward. The front end of the oil cylinder 8 is provided with an oil outlet 82, the oil outlet 82 is communicated with an oil chamber 81, and hydraulic oil in the oil chamber 81 can be supplied to the actuating element for actuation through the oil outlet 82.
When the cylinder is in a working state, the third air port 221 is used for air intake, the second air port 211 is used for air exhaust, the first air port 112 is used for air exhaust, the air pushes the piston 4 to move towards the first cylinder barrel 1 side, and the piston 4 drives the piston rod 3 to extend out of the first cylinder barrel 1 through the middle connecting rod 5, so that the piston 4 is inserted into the oil cavity 81 of the oil cylinder 8 to pressurize hydraulic oil in the oil cavity 81. According to the Pascal law, the pressure of the gas is unchanged, and the area of the piston 4 is larger than that of the piston rod 3, so that the pressure of the piston rod 3 acting in the oil cavity 81 is increased, and the effect of pressurizing the hydraulic oil is achieved. The pressurized hydraulic oil is supplied to the actuating element through the oil outlet 82 for actuation.
In one embodiment, as shown in fig. 6-8, the gas-liquid pressure increasing device further comprises an oil supplementing pot 9 for supplementing oil into the oil cavity 81. An oil supply port of the oil supply can 9 can be communicated with the oil chamber 81 through a communication passage 113 for supplying oil into the oil chamber 81 to compensate for the loss of the hydraulic oil. The gas-liquid supercharging device is a direct-pressure supercharging device, gas is not required to be supplied from the oil cylinder 8, so that the small-size oil supplementing pot 9 is used, and the product is simpler.
In summary, according to the cylinder and the gas-liquid supercharging device provided by the utility model, the intermediate connecting rod is connected between the piston and the piston rod, and the diameter of the intermediate connecting rod is larger than that of the piston rod, so that the volume of the gas chamber between the intermediate connecting rod and the second cylinder is reduced, the inflation quantity required during the return stroke of the piston can be reduced, the gas consumption is reduced, the stress on the return stroke of the piston is reduced, the impact force is reduced, and the noise generated during the return stroke of the piston is reduced.
According to the needs, the above technical schemes can be combined to achieve the best technical effect.
The foregoing is considered as illustrative only of the principles and preferred embodiments of the utility model. It should be noted that, for those skilled in the art, several other modifications can be made on the basis of the principle of the present invention, and the protection scope of the present invention should be regarded.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122005158.6U CN215861032U (en) | 2021-08-24 | 2021-08-24 | Cylinder and gas-liquid supercharging device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122005158.6U CN215861032U (en) | 2021-08-24 | 2021-08-24 | Cylinder and gas-liquid supercharging device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215861032U true CN215861032U (en) | 2022-02-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122005158.6U Active CN215861032U (en) | 2021-08-24 | 2021-08-24 | Cylinder and gas-liquid supercharging device |
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| Country | Link |
|---|---|
| CN (1) | CN215861032U (en) |
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2021
- 2021-08-24 CN CN202122005158.6U patent/CN215861032U/en active Active
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