CN209959612U - Automatic reciprocating hydraulic cylinder with adjustable stroke - Google Patents
Automatic reciprocating hydraulic cylinder with adjustable stroke Download PDFInfo
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- CN209959612U CN209959612U CN201920667191.5U CN201920667191U CN209959612U CN 209959612 U CN209959612 U CN 209959612U CN 201920667191 U CN201920667191 U CN 201920667191U CN 209959612 U CN209959612 U CN 209959612U
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Abstract
The utility model relates to an adjustable automatic answer formula pneumatic cylinder of stroke, including hydraulic cylinder body, the pneumatic cylinder body is equipped with power liquid inlet pipe way, power liquid inlet pipe way is through hydraulic chamber pipeline and lower hydraulic chamber intercommunication down, lower hydraulic chamber upper portion is equipped with gliding piston from top to bottom, the piston rod at piston center part runs through down hydraulic chamber, piston rod lower extreme fixed mounting has the stroke regulating plate, still be provided with gliding valve stem from top to bottom on the hydraulic cylinder body of piston rod one side, valve stem upper end is in down the hydraulic chamber, the valve stem passes through switching-over hydraulic signal pipe and the intercommunication of cavity under the sliding valve, be equipped with the sliding valve in the cavity under the sliding valve, hydraulic pipeline and last hydraulic chamber intercommunication are passed through to sliding valve one side, the relative one side of sliding valve and last hydraulic pressure pipeline is connected with low pressure power liquid pipeline, the low pressure power liquid pipeline other end communicates to on the valve stem. Has the advantages that: the automatic stroke adjustable effect can be realized by reasonably switching the valve through the power fluid, and the requirements of special working environment and working task can be met.
Description
Technical Field
The utility model relates to a pneumatic cylinder technical field especially relates to an adjustable automatic reversal formula pneumatic cylinder of stroke.
Background
The hydraulic cylinder is a hydraulic actuating element which converts hydraulic energy into mechanical energy and makes linear reciprocating motion (or swinging motion), has simple structure and reliable work, can omit a speed reducer when realizing reciprocating motion, has no transmission clearance and moves stably, and is widely applied to hydraulic systems of various machines.
The hydraulic cylinder has various structural forms, and the classification method thereof also has various types: the stroke-adjustable automatic reciprocating hydraulic cylinder is developed to meet the mechanical operation requirements under complex environments.
SUMMERY OF THE UTILITY MODEL
In order to realize the purpose, the utility model provides an adjustable automatic reversal formula pneumatic cylinder of stroke.
The technical scheme is as follows:
an automatic reciprocating hydraulic cylinder with adjustable stroke comprises a hydraulic cylinder body, wherein the hydraulic cylinder body is provided with a power liquid inlet pipeline, the power liquid inlet pipeline is communicated with the lower hydraulic cavity through a lower hydraulic cavity pipeline, the upper part of the lower hydraulic cavity is provided with a piston capable of sliding up and down, a piston rod at the center of the piston penetrates through the lower hydraulic cavity, a stroke adjusting plate is fixedly arranged at the lower end of the piston rod, a valve rod capable of sliding up and down is further arranged on the hydraulic cylinder body on one side of the piston rod, the upper end of the valve rod is positioned in the lower hydraulic cavity, the valve stem is communicated with a slide valve bottom cavity through a reversing hydraulic signal pipe, a slide valve is arranged in the slide valve bottom cavity, one side of the slide valve is communicated with the upper hydraulic cavity through an upper hydraulic pipeline, one side of the slide valve, which is opposite to the upper hydraulic pipeline, is connected with a low-pressure power liquid pipeline, and the other end of the low-pressure power liquid pipeline is communicated to the valve signal rod.
For further explanation, the upper hydraulic chamber and the lower hydraulic chamber are respectively arranged at the upper part and the lower part of the piston.
For further explanation, the power liquid inlet pipeline is also connected with the valve stem.
As further illustration, a valve stem groove is formed in the middle of the valve stem, and the valve stem groove slides up and down along with the valve stem to realize communication with the power hydraulic pipeline and switching between communication of the reversing hydraulic signal pipe and the low-pressure power hydraulic pipeline.
The utility model has the advantages that:
the stroke-adjustable automatic reciprocating hydraulic cylinder can achieve the effect of automatically adjusting the stroke through a reasonable switching valve of power fluid, and can meet the requirements of special working environments and working tasks.
Drawings
FIG. 1 is a schematic view of the working state of the stroke-adjustable automatic reciprocating hydraulic cylinder of the present invention;
fig. 2 is a schematic view of the second working state of the stroke-adjustable automatic reciprocating hydraulic cylinder of the present invention.
Detailed Description
The technical solution of the present invention will be described in more detail and fully with reference to the accompanying drawings.
As shown in fig. 1:
an automatic reciprocating hydraulic cylinder with an adjustable stroke comprises a hydraulic cylinder body, wherein the hydraulic cylinder body is provided with a power liquid inlet pipeline 1, the power liquid inlet pipeline 1 is communicated with a lower hydraulic cavity 9 through a lower hydraulic cavity pipeline 2, the upper part of the lower hydraulic cavity is provided with a piston 7 capable of sliding up and down, a piston rod at the central part of the piston 7 penetrates through the lower hydraulic cavity 9, the lower end of the piston rod is fixedly provided with a stroke adjusting plate 14, the hydraulic cylinder body at one side of the piston rod 8 is also provided with a valve stem 10 capable of sliding up and down, the upper end of the valve stem 10 is positioned in the lower hydraulic cavity, the valve stem 10 is communicated with a slide valve bottom cavity 5 through a reversing hydraulic signal pipe 13, a slide valve 3 is arranged in the slide valve bottom cavity 5, one side of the slide valve 3 is communicated with an upper hydraulic cavity 6 through an upper hydraulic pipeline 4, one side of the slide valve 3, which is opposite to the upper hydraulic pipeline 4, is connected, the other end of the low-pressure power liquid pipeline 12 is communicated to the valve stem 10; the upper hydraulic cavity 6 and the lower hydraulic cavity 9 are respectively arranged at the upper part and the lower part of the piston 7. Power liquid inlet pipe way still is connected with valve letter pole, valve letter pole 10 middle part is equipped with valve letter pole recess 11, valve letter pole recess 11 slides from top to bottom along with valve letter pole 10 and realizes the switching with the intercommunication of power hydraulic pressure pipeline 1 and the intercommunication of switching-over hydraulic signal pipe 13 and low pressure power liquid pipeline 12.
The working principle of the embodiment and the reversing valve is as follows:
referring to fig. 1:
when the stroke-adjustable automatic reciprocating hydraulic cylinder works in an upward mode, power liquid enters from a power liquid pipeline 1, enters a lower hydraulic cavity 9 through a lower hydraulic cavity pipeline 2 to push a piston 7 to move upward, when a stroke adjusting plate 14 installed on a piston rod moves upward to a top dead center, a valve stem 10 is pushed to move upward, a valve stem groove 11 also moves upward along with the valve stem groove and is communicated with a high-pressure power liquid pipeline 1, high-pressure media enter a reversing signal pipe 13 and a slide valve bottom cavity 5, and because the bottom area of a slide valve 3 is larger than the upper area and the thrust force is also large, the slide valve 3 is pushed to move upward, the relation of high pressure and low pressure of the power liquid of an upper hydraulic cavity pipeline 4 and a lower hydraulic cavity pipeline 2 is switched, and the hydraulic cylinder is automatically reversed.
Referring to fig. 2:
when the stroke-adjustable automatic reciprocating hydraulic cylinder works in an ascending mode, when the piston 7 descends to a lower dead point, the valve stem 10 is pushed to descend, the valve stem groove 11 also descends, the hydraulic signal pipe 13 of the reversing valve is communicated with the low-pressure power liquid pipeline 12, hydraulic media in the bottom cavity 5 of the sliding valve are discharged to form low pressure, and the sliding valve 3 pushes the sliding valve to descend under the action of the upper pressure to reverse the reversing valve.
The stroke-adjustable automatic reciprocating hydraulic cylinder can achieve the effect of automatically adjusting the stroke through a reasonable switching valve of power fluid, and can meet the requirements of special working environments and working tasks.
It is obvious that the described embodiments are only some of the embodiments of the present invention, and not all of them. Based on the embodiments in the present invention, all other implementations obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention.
Claims (4)
1. An automatic reciprocating hydraulic cylinder with an adjustable stroke comprises a hydraulic cylinder body and is characterized in that the hydraulic cylinder body is provided with a power liquid inlet pipeline (1), the power liquid inlet pipeline (1) is communicated with a lower hydraulic cavity (9) through a lower hydraulic cavity pipeline (2), the upper part of the lower hydraulic cavity (9) is provided with a piston (7) capable of sliding up and down, a piston rod (8) at the central part of the piston (7) penetrates through the lower hydraulic cavity (9), the lower end of the piston rod (8) is fixedly provided with a stroke adjusting plate (14), a valve stem (10) capable of sliding up and down is further arranged on the hydraulic cylinder body at one side of the piston rod (8), the upper end of the valve stem (10) is positioned in the lower hydraulic cavity, the valve stem (10) is communicated with a sliding valve bottom cavity (5) through a reversing hydraulic signal pipe (13), and a sliding valve (3) is arranged in the sliding valve bottom cavity (5), one side of the slide valve (3) is communicated with the upper hydraulic cavity (6) through an upper hydraulic pipeline (4), one side of the slide valve (3) opposite to the upper hydraulic pipeline (4) is connected with a low-pressure power liquid pipeline (12), and the other end of the low-pressure power liquid pipeline (12) is communicated to the valve signal rod (10).
2. A stroke-adjustable automatic reciprocating hydraulic cylinder according to claim 1, wherein the upper hydraulic chamber (6) and the lower hydraulic chamber (9) are provided at the upper portion and the lower portion of the piston (7), respectively.
3. A stroke-adjustable automatic reciprocating hydraulic cylinder according to claim 1, wherein the power liquid inlet pipe (1) is further connected with a valve stem (10).
4. The stroke-adjustable automatic reciprocating hydraulic cylinder as claimed in claim 1 or 3, characterized in that the valve stem (10) is provided with a concave valve stem groove (11) in the middle, and the valve stem groove (11) slides up and down along with the valve stem (10) to realize the communication with the power liquid inlet pipeline (1) and the communication between the reversing hydraulic signal pipe (13) and the low-pressure power liquid pipeline (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920667191.5U CN209959612U (en) | 2019-05-10 | 2019-05-10 | Automatic reciprocating hydraulic cylinder with adjustable stroke |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920667191.5U CN209959612U (en) | 2019-05-10 | 2019-05-10 | Automatic reciprocating hydraulic cylinder with adjustable stroke |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209959612U true CN209959612U (en) | 2020-01-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920667191.5U Active CN209959612U (en) | 2019-05-10 | 2019-05-10 | Automatic reciprocating hydraulic cylinder with adjustable stroke |
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| CN (1) | CN209959612U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110118210A (en) * | 2019-05-10 | 2019-08-13 | 北京丹诺威科技发展有限公司 | A kind of adjustable automatic repeatedly hydraulic cylinder of stroke |
-
2019
- 2019-05-10 CN CN201920667191.5U patent/CN209959612U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110118210A (en) * | 2019-05-10 | 2019-08-13 | 北京丹诺威科技发展有限公司 | A kind of adjustable automatic repeatedly hydraulic cylinder of stroke |
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