CN114321080A - Safety lock hydraulic cylinder - Google Patents
Safety lock hydraulic cylinder Download PDFInfo
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- CN114321080A CN114321080A CN202111398572.6A CN202111398572A CN114321080A CN 114321080 A CN114321080 A CN 114321080A CN 202111398572 A CN202111398572 A CN 202111398572A CN 114321080 A CN114321080 A CN 114321080A
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- 239000003921 oil Substances 0.000 claims abstract description 70
- 230000002457 bidirectional effect Effects 0.000 claims abstract description 16
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 11
- 229910000831 Steel Inorganic materials 0.000 claims description 12
- 239000010959 steel Substances 0.000 claims description 12
- 238000009434 installation Methods 0.000 abstract description 3
- 230000010354 integration Effects 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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Abstract
The invention relates to a hydraulic cylinder, in particular to a safety lock hydraulic cylinder, which comprises an electromagnetic valve, a hydraulic oil cylinder body, a one-way valve, a cylinder cover, a two-way piston rod and a piston, wherein the electromagnetic valve is arranged on the hydraulic oil cylinder body; the cylinder body is provided with a piston hole, a first oil hole and a second oil hole which are communicated with the piston hole and positioned at two ends of the cylinder body, the cylinder body is also provided with a valve seat, the valve seat is provided with a valve hole communicated with the first oil hole and the second oil hole, and a third oil hole and a fourth oil hole which are respectively communicated with the first oil hole and the second oil hole, and the third oil hole and the fourth oil hole are respectively connected with the electromagnetic valve; the one-way valve is arranged in the valve hole; the cylinder covers are fixed at two ends of the piston hole; the bidirectional piston rod is inserted on the cylinder cover in a sliding way; the piston is fixed on the bidirectional piston rod and movably inserted in the piston hole; hydraulic oil is filled in the hydraulic cylinder. A check valve is integrated in a safety lock hydraulic cylinder, a one-way locking function can be achieved through an electromagnetic valve, an oil way and control are simple, the integration level is high, the structure is simple, installation is convenient, and use is reliable.
Description
Technical Field
The invention relates to a hydraulic cylinder, in particular to a safety lock hydraulic cylinder.
Background
The double-rod hydraulic cylinder is a hydraulic cylinder with piston rods on two sides of a piston, is generally driven by bidirectional hydraulic pressure, and can realize constant-speed reciprocating motion.
However, in some use places, the hydraulic cylinder needs to be locked in one direction, namely, the piston rod can move freely to one side, but the other side cannot move freely, the mode is realized mainly through linkage of a plurality of groups of electromagnetic valves at present, and the oil circuit and the control are complex.
Disclosure of Invention
In order to solve the problems, the invention provides a safety lock hydraulic cylinder which is simple in oil circuit and control, high in integration level and simple in structure, and the specific technical scheme is as follows:
the utility model provides a insurance lock pneumatic cylinder, includes solenoid valve and hydraulic oil, still includes: the cylinder body is provided with a piston hole, a first oil hole and a second oil hole which are communicated with the piston hole and positioned at two ends of the cylinder body, the cylinder body is also provided with a valve seat, the valve seat is provided with a valve hole communicated with the first oil hole and the second oil hole, and a third oil hole and a fourth oil hole which are respectively communicated with the first oil hole and the second oil hole, and the third oil hole and the fourth oil hole are respectively connected with the electromagnetic valve; a one-way valve mounted within the valve bore; the cylinder covers are fixed at two ends of the piston hole; the bidirectional piston rod is inserted on the cylinder cover in a sliding manner; the piston is fixed on the bidirectional piston rod and movably inserted in the piston hole; the hydraulic oil is filled in the hydraulic cylinder.
Preferably, the check valve includes: the spring seat is installed at one end of the valve hole and is provided with a fifth oil hole; the steel ball is movably inserted in the valve hole and is positioned at the other end of the valve hole; and two ends of the spring are respectively connected with the spring seat and the steel ball and are used for pressing the steel ball at the other end of the valve hole.
The clamping spring is fixed at one end of the valve hole and located on one side of the spring seat.
Further, the solenoid valve is mounted on the valve seat.
Compared with the prior art, the invention has the following beneficial effects:
the safety lock hydraulic cylinder provided by the invention is internally integrated with the one-way valve, can realize the one-way locking function through the electromagnetic valve, and has the advantages of simple oil circuit and control, high integration level, simple structure, convenience in installation and reliability in use.
Drawings
FIG. 1 is a schematic diagram of a safety lock cylinder;
fig. 2 is a partial enlarged view at I in fig. 1.
Detailed Description
The invention will now be further described with reference to the accompanying drawings.
As shown in fig. 1 and 2, the hydraulic cylinder of the safety lock comprises an electromagnetic valve 5, a cylinder body 1, a one-way valve and a cylinder cover 5.
The cylinder body 1 is provided with a piston hole, a first oil hole 11, a second oil hole 12 and a valve seat 15, the piston hole is arranged along the axis and is a through hole, and the first oil hole 11 and the second oil hole 12 are arranged at two ends of the cylinder body 1 and are communicated with the piston hole. The electromagnetic valve 5 is arranged on a valve seat 15, a valve hole 16, a third oil hole 17 and a fourth oil hole 18 are arranged on the valve seat 15, a one-way valve is arranged in the valve hole 16, two ends of the valve hole 16 are respectively communicated with the first oil hole 11 and the second oil hole 12 through oil pipes 6, the third oil hole 17 and the fourth oil hole 18 are respectively positioned at two sides of the one-way valve, the third oil hole 17 is communicated with the first oil hole 11, the fourth oil hole 18 is communicated with the second oil hole 12, the third oil hole 17 and the fourth oil hole 18 are respectively connected with the electromagnetic valve 5, the third oil hole 17 is connected with a port P of the electromagnetic valve 5, and the fourth oil hole 18 is connected with a port A of the electromagnetic valve 5; the cylinder cover 5 is annular, and the cylinder cover 5 is equipped with two, and the cylinder cover 5 is fixed at the both ends of piston hole, and is located one side of first oilhole 11 and second oilhole 12 respectively.
The bidirectional piston rod 3 is inserted on the cylinder cover 5 in a sliding way; the piston 4 is fixed at the center of the bidirectional piston rod 3, and the piston 4 is movably inserted in the piston hole.
The check valve comprises a spring seat 23, a steel ball 21, a spring 22 and a clamp spring 24, the spring seat 23 is provided with a fifth oil hole 25, the spring seat 23 is annular, the spring seat 23 is inserted into the valve hole 16 and is positioned at one side of the third oil hole 17, the clamp spring 24 is arranged at one side of the spring seat 23, the clamp spring 24 fixes the spring seat 23, and the steel ball 21 is movably inserted into the valve hole 16 and is positioned at one side of the fourth oil hole 18; two ends of the spring 22 are respectively connected with the spring seat 23 and the steel ball 21, and the spring is used for pressing the steel ball 21 on the valve hole 16 to realize one-way circulation.
The solenoid valve 5 is arranged on the valve seat 15 to form an integral structure, so that the installation is convenient, the oil path is reduced, and the structure is simple.
And the piston 4 and the cylinder cover 5 are both provided with sealing rings.
The piston 4 divides the cylinder into a first chamber 13 and a second chamber 14, wherein the first oil hole 11 communicates with the first chamber 13 and the second oil hole 12 communicates with the second chamber 14. Hydraulic oil is filled in the hydraulic cylinder of the safety lock.
The motion control function of the piston rod is realized by the electromagnetic valve 5 and the built-in one-way valve of the cylinder body 1 during the work:
action 1: when the bidirectional piston rod 3 is pushed leftwards, because the electromagnetic valve 5 is not electrified at the moment, the port P of the electromagnetic valve 5 is not communicated with the port A, the valve hole 16 is sealed by the steel ball 21 under the action of the thrust of the spring 22, at the moment, hydraulic oil in the first cavity 13 of the hydraulic cylinder is locked and cannot enter the second cavity 14, the bidirectional piston rod 3 cannot move leftwards, and therefore the bidirectional piston rod 3 is locked to move leftwards.
And action 2: when the bidirectional piston rod 3 is subjected to leftward thrust, if the electromagnetic valve 5 is electrified, the port P of the electromagnetic valve 5 is communicated with the port A, and the first oil hole 11 and the second oil hole 12 are communicated through the electromagnetic valve 5; at this time, the hydraulic oil in the first chamber 13 enters the second chamber 14 through the first oil hole 11, the third oil hole 17, the solenoid valve 5, the fourth oil hole 18 and the second oil hole 12, and the bidirectional piston rod 3 moves leftward, so that the piston rod of the electromagnetic unlocking hydraulic cylinder moves leftward.
And action 3: when the bidirectional piston rod 3 is pushed rightward, no matter whether the electromagnetic valve 5 is electrified or not, hydraulic oil in the second cavity 14 enters the valve hole 16 through the second oil hole 12 and jacks the steel ball 21, then enters the first cavity 13 through the fifth oil hole 25 and the first oil hole 11, and the bidirectional piston rod 3 moves rightward, so that the piston rod of the hydraulic cylinder freely moves rightward.
The technical principle of the present invention is described above in connection with specific embodiments. The description is made for the purpose of illustrating the principles of the invention and should not be construed in any way as limiting the scope of the invention. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without inventive step, which shall fall within the scope of the appended claims.
Claims (4)
1. The utility model provides a insurance lock pneumatic cylinder, includes solenoid valve (5) and hydraulic oil, its characterized in that still includes:
the cylinder body (1), the cylinder body (1) is provided with a piston hole, a first oil hole (11) and a second oil hole (12) which are communicated with the piston hole and located at two ends of the cylinder body (1), the cylinder body (1) is further provided with a valve seat (15), the valve seat (15) is provided with a valve hole (16) communicated with the first oil hole (11) and the second oil hole (12) and a third oil hole (17) and a fourth oil hole (18) which are communicated with the first oil hole (11) and the second oil hole (12) respectively, and the third oil hole (17) and the fourth oil hole (18) are connected with the electromagnetic valve (5) respectively;
a check valve mounted within the valve bore (16);
the cylinder covers (5), the cylinder covers (5) are fixed at two ends of the piston hole;
the bidirectional piston rod (3) is inserted on the cylinder cover (5) in a sliding manner; and
the piston (4) is fixed on the bidirectional piston rod (3) and movably inserted into the piston hole;
the hydraulic oil is filled in the hydraulic cylinder.
2. A safety lock cylinder as claimed in claim 1, wherein the one-way valve comprises:
the spring seat (23) is mounted at one end of the valve hole (16), and a fifth oil hole (25) is formed in the spring seat (23);
the steel ball (21) is movably inserted in the valve hole (16) and is positioned at the other end of the valve hole (16); and
and two ends of the spring (22) are respectively connected with the spring seat (23) and the steel ball (21) and used for pressing the steel ball (21) at the other end of the valve hole (16).
3. A cylinder as claimed in claim 2, further comprising a circlip (24), the circlip (24) being fixed to one end of the valve bore (16) and located to one side of the spring seat (23).
4. A cylinder according to claim 1, characterised in that the solenoid valve (5) is mounted on the valve seat (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111398572.6A CN114321080A (en) | 2021-11-23 | 2021-11-23 | Safety lock hydraulic cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111398572.6A CN114321080A (en) | 2021-11-23 | 2021-11-23 | Safety lock hydraulic cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114321080A true CN114321080A (en) | 2022-04-12 |
Family
ID=81046521
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111398572.6A Pending CN114321080A (en) | 2021-11-23 | 2021-11-23 | Safety lock hydraulic cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114321080A (en) |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1222247A (en) * | 1967-09-01 | 1971-02-10 | Koehring Co | Hydraulic control valve with void prevention means |
| CN101344102A (en) * | 2008-08-27 | 2009-01-14 | 华南理工大学 | Plunger type double-ejector rod gas-liquid vat and gas-liquid combination-controlled position and speed servo control device |
| CN202883539U (en) * | 2012-10-18 | 2013-04-17 | 蒂森克虏伯机场***(中山)有限公司 | Lifting plunger cylinder structure of boarding bridge |
| CN104533873A (en) * | 2015-01-05 | 2015-04-22 | 江苏真绩机械制造有限公司 | Two-way self-locking hydraulic cylinder |
| CN205078548U (en) * | 2015-10-10 | 2016-03-09 | 泸州长江液压密封件有限公司 | Pneumatic cylinder of hydraulic pressure lock is taken at middle part |
| CN205078547U (en) * | 2015-10-10 | 2016-03-09 | 泸州长江液压密封件有限公司 | Pneumatic cylinder of tip area hydraulic pressure lock |
| CN105889173A (en) * | 2016-06-16 | 2016-08-24 | 朱德伟 | Hydraulic buffer device and buffer oil cylinder comprising device |
| CN206409455U (en) * | 2016-12-27 | 2017-08-15 | 西安达刚路面机械股份有限公司 | A kind of oil cylinder with hydraulic control one-way valve |
| CN207195350U (en) * | 2017-08-18 | 2018-04-06 | 武汉华液传动制造有限公司 | Energy oil leakage is self-compensating to go out rod oil cylinder without external oil sources formula pair |
| CN109737111A (en) * | 2019-01-28 | 2019-05-10 | 日照海卓液压有限公司 | It is a kind of with the multi-way valve based on one-way or bi-directional hydraulic lock consubstantiality repairing function |
| CN210637311U (en) * | 2019-07-10 | 2020-05-29 | 东莞积信制造有限公司 | Bidirectional self-locking hydraulic oil cylinder |
| CN112901593A (en) * | 2021-03-25 | 2021-06-04 | 天地上海采掘装备科技有限公司 | Compact height-adjustable oil cylinder and coal mining machine |
| CN113503285A (en) * | 2021-07-23 | 2021-10-15 | 河南省稳众减振器有限公司 | Electric control self-locking oil cylinder |
| CN214888060U (en) * | 2021-03-25 | 2021-11-26 | 天地上海采掘装备科技有限公司 | Compact height-adjustable oil cylinder and coal mining machine |
-
2021
- 2021-11-23 CN CN202111398572.6A patent/CN114321080A/en active Pending
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1222247A (en) * | 1967-09-01 | 1971-02-10 | Koehring Co | Hydraulic control valve with void prevention means |
| CN101344102A (en) * | 2008-08-27 | 2009-01-14 | 华南理工大学 | Plunger type double-ejector rod gas-liquid vat and gas-liquid combination-controlled position and speed servo control device |
| CN202883539U (en) * | 2012-10-18 | 2013-04-17 | 蒂森克虏伯机场***(中山)有限公司 | Lifting plunger cylinder structure of boarding bridge |
| CN104533873A (en) * | 2015-01-05 | 2015-04-22 | 江苏真绩机械制造有限公司 | Two-way self-locking hydraulic cylinder |
| CN205078548U (en) * | 2015-10-10 | 2016-03-09 | 泸州长江液压密封件有限公司 | Pneumatic cylinder of hydraulic pressure lock is taken at middle part |
| CN205078547U (en) * | 2015-10-10 | 2016-03-09 | 泸州长江液压密封件有限公司 | Pneumatic cylinder of tip area hydraulic pressure lock |
| CN105889173A (en) * | 2016-06-16 | 2016-08-24 | 朱德伟 | Hydraulic buffer device and buffer oil cylinder comprising device |
| CN206409455U (en) * | 2016-12-27 | 2017-08-15 | 西安达刚路面机械股份有限公司 | A kind of oil cylinder with hydraulic control one-way valve |
| CN207195350U (en) * | 2017-08-18 | 2018-04-06 | 武汉华液传动制造有限公司 | Energy oil leakage is self-compensating to go out rod oil cylinder without external oil sources formula pair |
| CN109737111A (en) * | 2019-01-28 | 2019-05-10 | 日照海卓液压有限公司 | It is a kind of with the multi-way valve based on one-way or bi-directional hydraulic lock consubstantiality repairing function |
| CN210637311U (en) * | 2019-07-10 | 2020-05-29 | 东莞积信制造有限公司 | Bidirectional self-locking hydraulic oil cylinder |
| CN112901593A (en) * | 2021-03-25 | 2021-06-04 | 天地上海采掘装备科技有限公司 | Compact height-adjustable oil cylinder and coal mining machine |
| CN214888060U (en) * | 2021-03-25 | 2021-11-26 | 天地上海采掘装备科技有限公司 | Compact height-adjustable oil cylinder and coal mining machine |
| CN113503285A (en) * | 2021-07-23 | 2021-10-15 | 河南省稳众减振器有限公司 | Electric control self-locking oil cylinder |
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