CN212106431U - Hydraulic cylinder with cartridge valve - Google Patents
Hydraulic cylinder with cartridge valve Download PDFInfo
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- CN212106431U CN212106431U CN202020380165.7U CN202020380165U CN212106431U CN 212106431 U CN212106431 U CN 212106431U CN 202020380165 U CN202020380165 U CN 202020380165U CN 212106431 U CN212106431 U CN 212106431U
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Abstract
The utility model provides a pneumatic cylinder with cartridge valve belongs to pneumatic cylinder technical field, include: the cylinder body comprises a cylinder body and a front end cover fixedly arranged at the front end of the cylinder body; the piston rod is embedded in the cylinder, extends forwards out of the front end cover, and is fixedly provided with a connecting column which penetrates through a front mounting hole; the piston head is sleeved outside the rear end of the piston rod and fixedly connected with the piston rod, and the piston head is tightly attached to the inner wall of the cylinder body and divides the front and the rear of the cylinder body into a rod cavity and a rodless cavity; the valve component comprises a valve seat fixedly arranged at the rear end of the barrel body and two valve cores inserted on the valve seat, the valve seat is fixedly connected with the rear end face of the barrel body in an attaching mode, a first oil duct and a second oil duct are formed in the valve seat, the first oil duct sequentially passes through the two valve cores and then is communicated with the rodless cavity, the oil outlet of the first oil duct is located on the inner side of the barrel body, the second oil duct sequentially passes through the two valve cores and then is communicated with the rod cavity through an oil pipe, and the oil outlet of the second oil duct.
Description
Technical Field
The utility model belongs to the technical field of the pneumatic cylinder, a pneumatic cylinder with cartridge valve is related to.
Background
In the hydraulic circuit, some pneumatic cylinders can be integrated with the valve module, for example, a chinese patent with application number 201520784975.8 discloses a take balanced valve pneumatic cylinder, including piston rod, pneumatic cylinder and balanced valve, the piston rod is located one end in the pneumatic cylinder is provided with the piston, the piston will the pneumatic cylinder divide into has the pole chamber and does not have the pole chamber, balanced valve includes oil inlet and oil-out, the oil inlet with there is the pole chamber intercommunication, the oil-out with do not have the pole chamber intercommunication.
However, such a hydraulic cylinder has a complicated structure and is expensive to manufacture, weld, and assemble.
Disclosure of Invention
The utility model aims at having the above-mentioned problem to current technique, provided a pneumatic cylinder with cartridge valve that equipment is convenient and with low costs.
The purpose of the utility model can be realized by the following technical proposal: a hydraulic cylinder with a cartridge valve, comprising:
the cylinder body comprises a cylinder body and a front end cover fixedly arranged at the front end of the cylinder body;
the piston rod is embedded in the cylinder, extends forwards out of the front end cover, and is fixedly provided with a connecting column which penetrates through a front mounting hole;
the piston head is sleeved outside the rear end of the piston rod and fixedly connected with the piston rod, and the piston head is tightly attached to the inner wall of the cylinder body and divides the front and the rear of the cylinder body into a rod cavity and a rodless cavity;
the valve component comprises a valve seat fixedly arranged at the rear end of the barrel body and two valve cores inserted on the valve seat, the valve seat is fixedly connected with the rear end face of the barrel body in an attaching mode, a first oil duct and a second oil duct are formed in the valve seat, the first oil duct sequentially passes through the two valve cores and then is communicated with the rodless cavity, the oil outlet of the first oil duct is located on the inner side of the barrel body, the second oil duct sequentially passes through the two valve cores and then is communicated with the rod cavity through an oil pipe, and the oil outlet of the second oil duct.
As a further improvement of the utility model, the valve seat is concavely provided with a positioning groove for embedding the rear end of the cylinder body.
As a further improvement, the valve seat is provided with a rear mounting hole in a penetrating manner, and the rear mounting hole is not communicated with the first oil duct and the second oil duct.
As the utility model discloses a further improvement, the front end housing includes preceding lid, is formed with the cavity boss that supplies the piston rod to pass along preceding lid backward arch, terminal surface butt before preceding lid and the barrel, cavity boss embedding barrel and with barrel interference fit, the outer wall indent along the cavity boss is formed with first seal groove, and first seal groove extends to preceding lid forward, is formed with a plurality of second seal groove along the inner wall indent of cavity boss.
As a further improvement, the positioning step is formed along the concave surface of the front end of the cylinder body and is aligned with the first sealing groove.
As a further improvement, the utility model discloses a along the outer fabrication hole of seting up a plurality of circumference equipartition of preceding lid.
As a further improvement of the utility model, be equipped with the locating pin between spliced pole and the piston rod, both ends imbed spliced pole, piston rod respectively around the locating pin.
As a further improvement, the connecting column is provided with a positioning plane horizontally attached to the front end face of the piston rod.
As a further improvement, one of the valve cores is a cartridge balance valve, and the other valve core is a cartridge check valve.
Based on the technical scheme, the embodiment of the utility model provides a can produce following technological effect at least:
1. the valve seat can be used for inserting the valve core to control an oil path, and can also be used as a part of the cylinder body to seal the rear end of the cylinder body, so that the number of parts of the hydraulic cylinder is reduced, the assembly is simpler and more convenient, and the production cost is lower. In addition, the sealing effect can be ensured by the structure that the first oil passage of the valve seat is directly communicated with the rodless cavity.
2. Through setting up the constant head tank to the welding position of positioning valve seat and barrel improves welding quality, and the two sealed effect is better.
3. Through set up the back mounting hole on the disk seat for make the disk seat can also regard as the connecting piece to use, the pneumatic cylinder installation is more convenient, and practical value is higher.
Drawings
Fig. 1 is a perspective view of a preferred embodiment of the present invention.
Fig. 2 is a perspective view of another angle of a preferred embodiment of the present invention.
Fig. 3 is a perspective view of the valve assembly.
Fig. 4 is a cross-sectional view of a preferred embodiment of the present invention.
Fig. 5 is a partially enlarged view of a portion a in fig. 4.
Fig. 6 is a partially enlarged view at B in fig. 4.
In the figure, 100, cylinder; 110. a barrel; 111. positioning a step; 120. a front end cover; 121. a front cover body; 122. a hollow boss; 123. a first seal groove; 124. a second seal groove; 125. a fabrication hole; 130. a rod cavity; 140. a rodless cavity;
200. a piston rod; 210. connecting columns; 211. a front mounting hole; 212. positioning a plane; 220. positioning pins;
300. a piston head;
400. a valve assembly; 410. a valve seat; 411. a first oil passage; 412. a second oil passage; 413. positioning a groove; 414. a rear mounting hole; 420. a valve core; 430. and (4) an oil pipe.
Detailed Description
The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.
As shown in fig. 1 to 6, the hydraulic cylinder with a cartridge valve includes:
a cylinder 100 including a cylinder 110 and a front cover 120 fixed to a front end of the cylinder 110;
the piston rod 200 is embedded in the cylinder, the piston rod 200 extends forwards out of the front end cover 120, the front end of the piston rod 200 is fixedly provided with a connecting column 210, and the connecting column 210 penetrates through the left and right of a front mounting hole 211;
the piston head 300 is sleeved on the outer side of the rear end of the piston rod 200 and fixedly connected with the piston rod 200, and the piston head 300 is tightly attached to the inner wall of the cylinder body 100 and divides the front and the rear of the cylinder body 100 into a rod cavity 130 and a rodless cavity 140;
the valve assembly 400 comprises a valve seat 410 fixedly arranged at the rear end of the cylinder body 110 and two valve cores 420 inserted in the valve seat 410, the valve seat 410 is attached to the rear end face of the cylinder body 110 and fixedly connected in a welding mode, the valve seat 410 is provided with a first oil duct 411 and a second oil duct 412, the first oil duct 411 sequentially passes through the two valve cores 420 and then is communicated with the rodless cavity 140, an oil outlet of the first oil duct 411 is located on the inner side of the cylinder body 110, the second oil duct 412 sequentially passes through the two valve cores 420 and then is communicated with the rod cavity 130 through an oil pipe 430, and an oil outlet of the second oil duct 412 is.
In the hydraulic cylinder, one valve core 420 is a plug-in type balance valve, the other valve core 420 is a plug-in type check valve, and the valve seat 410 can be used for plugging the valve core 420 to control an oil path and can also be used as a part of the cylinder body 100 to seal the rear end of the cylinder body 100, so that the number of parts of the hydraulic cylinder is reduced, the assembly is simpler and more convenient, and the production cost is lower. In addition, the structure in which first oil passage 411 of valve seat 410 directly communicates with rodless chamber 140 can also ensure the sealing effect.
The valve seat 410 is recessed to form a positioning groove 413 into which the rear end of the cylinder 110 is inserted. Through setting up constant head tank 413 to the welding position of position valve seat 410 and barrel 110 improves welding quality, and the sealed effect of the two is better.
Further, the valve seat 410 is provided with a rear mounting hole 414 in a penetrating manner, and the rear mounting hole 414 is not communicated with the first oil duct 411 and the second oil duct 412, so that the valve seat 410 can be used as a connecting piece, the hydraulic cylinder is more convenient to mount, and the practical value is higher.
The front end cover 120 includes a front cover body 121, a hollow boss 122 protruding backward along the front cover body 121 and allowing the piston rod 200 to pass through is formed, the front cover body 121 abuts against the front end face of the cylinder body 110, the hollow boss 122 is embedded in the cylinder body 110 and is in interference fit with the cylinder body 110, a first sealing groove 123 is formed along the inner recess of the outer wall of the hollow boss 122, the first sealing groove 123 extends forward to the front cover body 121, and a plurality of second sealing grooves 124 are formed along the inner recess of the inner wall of the hollow boss 122. The front end cover 120 of the structure is convenient to be positioned and installed with the cylinder body 110, and the first sealing groove 123 and the second sealing groove 124 can be respectively embedded with sealing rings so as to ensure that hydraulic oil in the cylinder body 100 does not leak.
Preferably, a positioning step 111 is concavely formed along the front end surface of the cylinder 110, and the positioning step 111 is aligned with the first seal groove 123. When the sealing ring is installed in the first sealing groove 123, the sealing ring can be simultaneously embedded with the positioning step 111, so that the sealing ring is installed more reliably, and the sealing effect is better.
In order to facilitate the processing of the front end cover 120, a plurality of process holes 125 are formed along the outer edge of the front cover body 121. The process hole 125 is provided, so that the clamping is simpler and more reliable when the front end cover 120 is processed.
In order to facilitate the welding and the fixing of the connecting column 210 and the piston rod 200, a positioning pin 220 is arranged between the connecting column 210 and the piston rod 200, and the front end and the rear end of the positioning pin 220 are respectively embedded into the connecting column 210 and the piston rod 200. The positioning pin 220 can be in interference fit with the connecting column 210 and the piston rod 200 to avoid the misalignment when the two are welded.
In order to further improve the positioning effect of the connecting column 210 and the piston rod 200, the connecting column 210 is provided with a positioning plane 212 horizontally attached to the front end surface of the piston rod 200.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Claims (9)
1. A hydraulic cylinder with a cartridge valve, comprising:
the cylinder body comprises a cylinder body and a front end cover fixedly arranged at the front end of the cylinder body;
the piston rod is embedded in the cylinder, extends forwards out of the front end cover, and is fixedly provided with a connecting column which penetrates through a front mounting hole;
the piston head is sleeved outside the rear end of the piston rod and fixedly connected with the piston rod, and the piston head is tightly attached to the inner wall of the cylinder body and divides the front and the rear of the cylinder body into a rod cavity and a rodless cavity;
the valve component comprises a valve seat fixedly arranged at the rear end of the barrel body and two valve cores inserted on the valve seat, the valve seat is fixedly connected with the rear end face of the barrel body in an attaching mode, a first oil duct and a second oil duct are formed in the valve seat, the first oil duct sequentially passes through the two valve cores and then is communicated with the rodless cavity, the oil outlet of the first oil duct is located on the inner side of the barrel body, the second oil duct sequentially passes through the two valve cores and then is communicated with the rod cavity through an oil pipe, and the oil outlet of the second oil duct.
2. The hydraulic cylinder with the cartridge valve of claim 1, wherein: the valve seat is internally concave with a positioning groove for embedding the rear end of the cylinder body.
3. The hydraulic cylinder with the cartridge valve of claim 1, wherein: the valve seat is provided with a rear mounting hole in a penetrating mode, and the rear mounting hole is not communicated with the first oil duct and the second oil duct.
4. The hydraulic cylinder with the cartridge valve of claim 1, wherein: the front end cover comprises a front cover body, a hollow boss for the piston rod to penetrate through is formed in a backward protruding mode along the front cover body, the front cover body is abutted to the front end face of the cylinder body, the hollow boss is embedded into the cylinder body, a first sealing groove is formed in the concave mode of the outer wall of the hollow boss, the first sealing groove extends forwards to the front cover body, and a plurality of second sealing grooves are formed in the concave mode of the inner wall of the hollow boss.
5. The hydraulic cylinder with the cartridge valve of claim 4, wherein: a positioning step is formed along the inner concave of the front end face of the cylinder body, and the positioning step is aligned with the first sealing groove.
6. The hydraulic cylinder with the cartridge valve of claim 4, wherein: a plurality of fabrication holes are circumferentially and uniformly distributed along the outer edge of the front cover body.
7. The hydraulic cylinder with the cartridge valve of claim 1, wherein: and a positioning pin is arranged between the connecting column and the piston rod, and the front end and the rear end of the positioning pin are respectively embedded into the connecting column and the piston rod.
8. The hydraulic cylinder with the cartridge valve of claim 7, wherein: the connecting column is provided with a positioning plane horizontally attached to the front end face of the piston rod.
9. The hydraulic cylinder with the cartridge valve of claim 1, wherein: one valve core is a cartridge balance valve, and the other valve core is a cartridge check valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020380165.7U CN212106431U (en) | 2020-03-23 | 2020-03-23 | Hydraulic cylinder with cartridge valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020380165.7U CN212106431U (en) | 2020-03-23 | 2020-03-23 | Hydraulic cylinder with cartridge valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212106431U true CN212106431U (en) | 2020-12-08 |
Family
ID=73638955
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020380165.7U Active CN212106431U (en) | 2020-03-23 | 2020-03-23 | Hydraulic cylinder with cartridge valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212106431U (en) |
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2020
- 2020-03-23 CN CN202020380165.7U patent/CN212106431U/en active Active
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