CN212106430U - Hydraulic cylinder with control valve - Google Patents
Hydraulic cylinder with control valve Download PDFInfo
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- CN212106430U CN212106430U CN202020378454.3U CN202020378454U CN212106430U CN 212106430 U CN212106430 U CN 212106430U CN 202020378454 U CN202020378454 U CN 202020378454U CN 212106430 U CN212106430 U CN 212106430U
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- piston rod
- cylinder body
- cylinder
- control valve
- end cover
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Abstract
The utility model provides a pneumatic cylinder of band control valve belongs to pneumatic cylinder technical field, include: the cylinder body comprises a cylinder body, a front end cover and a rear end cover, wherein the front end cover and the rear end cover are fixedly arranged at the front end and the rear end of the cylinder body, the rear end cover comprises a rear cover body, two rear connecting lugs which are bilaterally symmetrical are formed in a mode that the rear connecting lugs are protruded backwards along the rear cover body, and a rear mounting hole penetrates through the two rear connecting lugs in the left-; the piston rod is embedded in the cylinder, the piston rod extends forwards out of the front end cover, the front end of the piston rod is fixedly provided with a U-shaped front connecting lug, and the front connecting lug penetrates through a front mounting hole in the left-right direction; 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; a valve assembly. The utility model has the advantages of simple assembly and low cost.
Description
Technical Field
The utility model belongs to the technical field of the pneumatic cylinder, a pneumatic cylinder of band control 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, the mounting structure of such a hydraulic cylinder is complicated, and the cost for processing, welding, and assembling is high.
Disclosure of Invention
The utility model aims at having the above-mentioned problem to current technique, provided a pneumatic cylinder of taking control valve that the equipment is simple and with low costs.
The purpose of the utility model can be realized by the following technical proposal: a hydraulic cylinder with a control valve, comprising:
the cylinder body comprises a cylinder body, a front end cover and a rear end cover, wherein the front end cover and the rear end cover are fixedly arranged at the front end and the rear end of the cylinder body, the rear end cover comprises a rear cover body, two rear connecting lugs which are bilaterally symmetrical are formed in a mode that the rear connecting lugs are protruded backwards along the rear cover body, and a rear mounting hole penetrates through the two rear connecting lugs in the left-;
the piston rod is embedded in the cylinder, the piston rod extends forwards out of the front end cover, the front end of the piston rod is fixedly provided with a U-shaped front connecting lug, and the front connecting lug penetrates through a front mounting hole in the left-right direction;
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 on the outer side of the cylinder body and a valve core inserted on the valve seat, wherein a first oil duct and a second oil duct are arranged in the valve seat and are communicated through the valve core, the first oil duct is communicated with a rod cavity through a first oil pipe, and the second oil duct is communicated with a rodless cavity through a second oil pipe.
As a further improvement, the front side of the rear cover body is provided with a positioning boss, and the positioning boss is embedded into the rear end of the cylinder body.
As a further improvement of the utility model, the radial indent of junction of back lid and barrel has the back welding groove, and the cross-section in back welding groove is the V-arrangement.
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 the barrel spiro union, 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 flush 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, a positioning pin is arranged between the front connecting lug and the piston rod, and the front connecting lug and the piston rod are respectively embedded into the front end and the rear end of the positioning pin.
As a further improvement of the utility model, the front connecting lug is connected with the piston rod to form a front welding groove in a radial concave manner, and the cross section of the front welding groove is V-shaped.
As a further improvement, the front connecting lug is provided with a front pin hole along the left and right direction.
As a further improvement, the rear end cover is also provided with a rear pin hole, and the rear pin hole runs through the two rear connecting lugs along the left and right directions.
Based on the technical scheme, the embodiment of the utility model provides a can produce following technological effect at least:
1. the cylinder body is installed by integrally arranging the two rear connecting lugs on the rear end cover, the front connecting lug with the U-shaped front end is arranged at the front end of the piston rod to install the part to be stretched, and the rear end cover and the front connecting lug are small in overall structure, easy to machine and weld and lower in production cost of the hydraulic cylinder. In addition, the valve component is integrally arranged outside the cylinder body, so that later-period overhaul and maintenance of the hydraulic cylinder are facilitated.
2. Through setting up location boss to location rear end cap and barrel welded position improve welding quality, sealed effect is better.
3. Through the arrangement of the V-shaped rear welding groove, the welding flux can completely cover the joint gap between the rear end cover and the cylinder body, the welding quality is further improved, the welding seam is not leaked, and the appearance of the hydraulic cylinder is smoother and more attractive.
Drawings
Fig. 1 is a perspective view of a preferred embodiment of the present invention.
Fig. 2 is a partially enlarged view of a portion a in fig. 1.
Fig. 3 is a cross-sectional view of a preferred embodiment of the present invention.
Fig. 4 is a partially enlarged view at B in fig. 3.
Fig. 5 is a partially enlarged view at C in fig. 3.
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 rear end cap; 131. a rear cover body; 132. a rear connecting lug; 133. a rear mounting hole; 134. a rear pin hole; 135. positioning the boss; 140. a rod cavity; 150. a rodless cavity; 160. post-welding the groove;
200. a piston rod; 210. a front engaging lug; 211. a front mounting hole; 212. a front pin hole; 220. positioning pins; 230. a pre-weld groove;
300. a piston head;
400. a valve assembly; 410. a valve seat; 420. a valve core; 430. a first oil pipe; 440. a second 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 5, the hydraulic cylinder with a control valve includes:
the cylinder body 100 comprises a cylinder body 110, a front end cover 120 and a rear end cover 130, wherein the front end cover 120 and the rear end cover 130 are fixedly arranged at the front end and the rear end of the cylinder body 110, the rear end cover 130 comprises a rear cover body 131, two rear connecting lugs 132 which are bilaterally symmetrical are formed in a protruding mode backwards along the rear cover body 131, and a rear mounting hole 133 penetrates through the two rear connecting lugs 132 along the left-right direction;
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 U-shaped front connecting lug 210, and the front connecting lug 210 penetrates through a front mounting hole 211 along the left-right direction;
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 140 and a rodless cavity 150;
the valve assembly 400 includes a valve seat 410 fixedly disposed at an outer side of the cylinder block 100, and a valve core 420 inserted into the valve seat 410, wherein a first oil passage and a second oil passage are disposed in the valve seat 410, the first oil passage and the second oil passage are communicated through the valve core 420, the first oil passage is communicated with the rod cavity 140 through a first oil pipe 430, and the second oil passage is communicated with the rodless cavity 150 through a second oil pipe 440.
The two rear connecting lugs 132 are integrally arranged on the rear end cover 130 to install the cylinder body 100, the front connecting lug 210 in a U shape is arranged at the front end of the piston rod 200 to install a part to be stretched, and the rear end cover 130 and the front connecting lug 210 are small in overall structure, easy to machine and weld and lower in production cost of the hydraulic cylinder. In addition, valve module 400 is wholly arranged outside cylinder body 100, and later stage overhaul and maintenance of the hydraulic cylinder are facilitated.
The front side of the rear cover 131 is provided with a positioning boss 135, and the positioning boss 135 is embedded in the rear end of the cylinder 110. Through setting up location boss 135 to the welding position of location rear end cap 130 and barrel 110 improves welding quality, and the sealed effect of the two is better.
Further, a rear welding groove 160 is radially recessed at the joint of the rear cover 131 and the cylinder 110, and the section of the rear welding groove 160 is V-shaped. By arranging the V-shaped rear welding groove 160, the welding flux can completely cover the joint gap between the rear end cover 130 and the cylinder body 110, the welding quality is further improved, the welding seam is not leaked, and the appearance of the hydraulic cylinder is smoother and more attractive.
The front end cover 120 includes a front cover body 121, a hollow boss 122 protruding backward along the front cover body 121 for 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 into the cylinder body 110 and is screwed 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 first seal groove 123 and the second seal groove 124 may be respectively fitted with a seal ring to prevent the hydraulic oil in the cylinder block 100 from leaking. The front end cover 120 with the structure is reliable in positioning and installation with the cylinder body 110, convenient to disassemble and assemble and convenient for later-stage overhaul and maintenance of the hydraulic cylinder.
Preferably, a positioning step 111 is concavely formed along the front end surface of the cylinder 110, the positioning step 111 is flush with the first seal groove 123, and the seal ring in the first seal groove 123 is simultaneously embedded with the positioning step 111, so that the seal ring is more reliably mounted and has a better sealing effect.
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 front end cover 120 is more convenient and reliable to clamp through the fabrication hole 125, and meanwhile, when the front end cover 120 is disassembled and assembled with the barrel 110, the fabrication hole 125 can be used for inserting a tool to screw or unscrew the front end cover 120, so that the practical value is higher.
In order to facilitate the welding and the fixing of the front engaging lug 210 and the piston rod 200, a positioning pin 220 is arranged between the front engaging lug 210 and the piston rod 200, and the front end and the rear end of the positioning pin 220 are respectively embedded into the front engaging lug 210 and the piston rod 200. The positioning pin 220 can be in interference fit with the front connecting lug 210 and the piston rod 200 to avoid the misalignment when the two are welded.
Further, the joint of the front engaging lug 210 and the piston rod 200 is radially inwardly formed with a front welding groove 230, and the front welding groove 230 has a V-shaped cross section. In a similar way, the V-shaped front welding groove 230 is arranged, so that the welding flux can completely cover the joint gap between the piston rod 200 and the front connecting lug 210, the welding quality is further improved, the welding seam does not leak, and the appearance is smoother and more attractive.
In addition, the front engaging lug 210 is further provided with a front pin hole 212 extending through the left and right direction, the front pin hole 212 can be inserted with a pin, and the pin is matched with the limiting member to limit the rotation angle of the front engaging lug 210.
Similarly, the rear end cap 130 is further provided with a rear pin hole 134, the rear pin hole 134 penetrates through the two rear connection lugs 132 along the left-right direction, and the rear pin hole 134 is also used for viewing the insertion pin shaft and matching with the limiting member to limit the rotation angle of the rear connection lug 132.
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 (10)
1. A hydraulic cylinder with a control valve, comprising:
the cylinder body comprises a cylinder body, a front end cover and a rear end cover, wherein the front end cover and the rear end cover are fixedly arranged at the front end and the rear end of the cylinder body, the rear end cover comprises a rear cover body, two rear connecting lugs which are bilaterally symmetrical are formed in a backward protruding mode along the rear cover body, and a rear mounting hole penetrates through the two rear connecting lugs in the left-right direction;
the piston rod is embedded in the cylinder, the piston rod extends forwards out of the front end cover, the front end of the piston rod is fixedly provided with a U-shaped front connecting lug, and the front connecting lug penetrates through a front mounting hole in the left-right direction;
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 on the outer side of the cylinder body and a valve core inserted on the valve seat, wherein a first oil duct and a second oil duct are arranged in the valve seat and are communicated through the valve core, the first oil duct is communicated with a rod cavity through a first oil pipe, and the second oil duct is communicated with a rodless cavity through a second oil pipe.
2. The hydraulic cylinder with a control valve according to claim 1, wherein: the front side of the rear cover body is provided with a positioning boss which is embedded into the rear end of the cylinder body.
3. The hydraulic cylinder with a control valve according to claim 2, wherein: the joint of the rear cover body and the cylinder body is radially inwards provided with a rear welding groove, and the section of the rear welding groove is V-shaped.
4. The hydraulic cylinder with a control valve according to claim 1, wherein: the front end cover comprises a front cover body, a hollow boss for the piston rod to penetrate through is formed along the backward protrusion of 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 and is in threaded connection with the cylinder body, a first sealing groove is formed along the inner concave portion 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 along the inner concave portion of the inner wall of the hollow boss.
5. The hydraulic cylinder with a control valve according to claim 4, wherein: a positioning step is formed along the front end face of the cylinder body in a concave mode, and the positioning step is flush with the first sealing groove.
6. The hydraulic cylinder with a control valve according to 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 a control valve according to claim 1, wherein: and a positioning pin is arranged between the front connecting lug and the piston rod, and the front end and the rear end of the positioning pin are respectively embedded into the front connecting lug and the piston rod.
8. The hydraulic cylinder with a control valve of claim 7, wherein: the joint of the front connecting lug and the piston rod is radially inwards concave to form a front welding groove, and the section of the front welding groove is V-shaped.
9. The hydraulic cylinder with a control valve according to claim 1, wherein: the front connecting lug is also provided with a front pin hole in a penetrating way along the left-right direction.
10. The hydraulic cylinder with a control valve according to claim 1, wherein: the rear end cover is also provided with a rear pin hole which penetrates through the two rear connecting lugs in the left-right direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020378454.3U CN212106430U (en) | 2020-03-23 | 2020-03-23 | Hydraulic cylinder with control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020378454.3U CN212106430U (en) | 2020-03-23 | 2020-03-23 | Hydraulic cylinder with control valve |
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| Publication Number | Publication Date |
|---|---|
| CN212106430U true CN212106430U (en) | 2020-12-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020378454.3U Active CN212106430U (en) | 2020-03-23 | 2020-03-23 | Hydraulic cylinder with control valve |
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| Country | Link |
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| CN (1) | CN212106430U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112879269A (en) * | 2021-01-29 | 2021-06-01 | 宁波东洲传动件有限公司 | U-shaped joint for air cylinder and preparation method thereof |
-
2020
- 2020-03-23 CN CN202020378454.3U patent/CN212106430U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112879269A (en) * | 2021-01-29 | 2021-06-01 | 宁波东洲传动件有限公司 | U-shaped joint for air cylinder and preparation method thereof |
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