CN201588832U - Explosion-proof tube self-locking oil cylinder - Google Patents
Explosion-proof tube self-locking oil cylinder Download PDFInfo
- Publication number
- CN201588832U CN201588832U CN2009202558407U CN200920255840U CN201588832U CN 201588832 U CN201588832 U CN 201588832U CN 2009202558407 U CN2009202558407 U CN 2009202558407U CN 200920255840 U CN200920255840 U CN 200920255840U CN 201588832 U CN201588832 U CN 201588832U
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- oil
- locking
- self
- oil cylinder
- explosion
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Abstract
The utility model relates to the field of oil cylinders, in particular to an explosion-proof tube self-locking oil cylinder which is used for a rear excavator and is provided with a hydraulic self-locking support leg. The explosion-proof tube self-locking oil cylinder comprises a cylinder body which is provided with a hydraulic cavity with an opening at the front end; an oil cylinder piston provided with a piston rod is connected inside the hydraulic cavity; one end of the cylinder body is provided with a sealing end cover, and the other end thereof is fixedly provided with a connecting piece; a first oil hole and a first oil way communicated with a rear cavity are arranged under the rear end of the connecting piece; a second oil hole and a second oil way are positioned above the rear end of the connecting piece; the second oil way is communicated with a front cavity by a connecting oil pipe; a connecting cavity used for communicating the first oil way and the second oil way is arranged under the connecting piece; the upper part of the connecting cavity is provided with a self-locking piston; and a one-way valve is fixedly connected at the lower part of the connecting cavity. The explosion-proof tube self-locking oil cylinder can realize self-locking of the oil cylinder when an external oil pipe has accidental explosion, thus preventing accidental safety accidents caused by sudden pressure relief of the oil cylinder.
Description
Technical field
The utility model relates to the oil cylinder field, particularly a kind of supporting leg explosion stack self-locking oil cylinder with hydraulic pressure self-locking that is used for the back excavator.
Background technique
Domestic back is excavated facility and is not had explosion stack locking safety installations usually, so the time when the explosion of support oil cylinder external oil pipe accident, can't carry out locking to supporting leg, have to exist to cause overturning or the hidden danger of other accidents, not meet facility are excavated in the overseas market to the back safety requirement.
Summary of the invention
The utility model has locking function after the explosion of a kind of externally oil pipe is provided, and prevents the explosion stack self-locking oil cylinder that piston rod is regained.
The utility model is realized by following technological scheme:
The explosion stack self-locking oil cylinder, comprise cylinder body, cylinder body is provided with the hydraulic pressure cavity of front opening, the oil cylinder piston that is provided with piston rod is connected in the hydraulic pressure cavity, one end of cylinder body is provided with end cover, the other end is set with link, first oil circuit that the below of the rear end of link is provided with first hydraulic fluid port and is connected with the piston back cavity, the top is provided with second hydraulic fluid port and second oil circuit, connecting oil circuit connects with the piston ante-chamber by connecting oil pipe, the below of link is provided with the connection chamber that is communicated with first oil circuit and second oil circuit, the top of connection chamber is provided with the self-locking piston, one-way valve is fixedly connected on the bottom of connection chamber, here the piston cavity that is provided with by cylinder body, first hydraulic fluid port and second hydraulic fluid port that first oil circuit and second oil circuit and rear end of the cylinder block are provided with, realized the function of stretching out and regaining of oil cylinder, self-locking piston and the one-way valve that is provided with in connection chamber by connection first oil circuit that is provided with and second oil circuit and the connection chamber also, realized under the situation that the oil pipe explosion occurs, oil cylinder is locked, prevented the generation of unexpected production safety accident.
Described self-locking piston is the cylindrical body that the middle part offers seal groove, be provided with the O RunddichtringO in the seal groove, cylindrical two ends also are provided with the top rod that is connected with cylindrical body by cone boss, here the seal ring of She Zhiing has played a good seal action, the top rod that is provided with, be used for when the second hydraulic fluid port oil-feed, backing down the steel ball of one-way valve, conducting first oil circuit.
Described one-way valve comprises valve body, the valve body outside is provided with the screw thread that is connected with link, its inside is provided with steel ball, the end of valve body is provided with the adjusting spin-block, spring is arranged at steel ball and regulates between the spin-block, one-way valve is fixedly connected on the link by screw thread, and steel ball has been realized the logical function of closing of one-way valve, and adjusting spin-block and spring have been realized the adjusting to pressure.
The center of described end cover is provided with the through hole that cooperates with piston rod, through-hole wall offers a plurality of circular grooves, be provided with seal ring in the circular groove, the outside of end cover is provided with screw thread and the seal ring that cooperates with cylinder body, a plurality of seal rings are set, reach good sealing, with the mode that is threaded, improved the interchangeability of end cover, be convenient to maintenance, repair and the cleaning of oil cylinder.
Above technological scheme has realized a kind of when the oil pipe explosion, prevents regain and the explosion stack self-locking oil cylinder that be easy to safeguard of piston rod.
Description of drawings
Fig. 1 is the utility model axonometric drawing;
Fig. 2 is the utility model sectional view;
Fig. 3 is the sectional view of end cover;
Fig. 4 is the partial enlarged drawing of A;
1 is first hydraulic fluid port among the figure, and 2 is second hydraulic fluid port, and 3 are the self-locking piston, and 4 is ante-chamber, and 5 is oil cylinder piston, and 6 is back cavity, and 7 is steel ball, and 8 for connecting oil pipe, and 9 is end cover, and 10 is piston rod, and 11 is connection chamber, and 12 is link.13 is one-way valve, and 14 is valve body, and 15 is push rod, and 16 for regulating spin-block, and 17 is cylinder body.
Embodiment
Below in conjunction with accompanying drawing the utility model is further specified:
Shown in Fig. 1 to 4, the utility model comprises cylinder body 17, cylinder body 17 is provided with the hydraulic pressure cavity of front opening, the front end of cylinder body 17 is threaded and is provided with the end cover 9 of through hole in the middle of one, through-hole wall is provided with two circular grooves, be equipped with seal ring in the circular groove, oil cylinder piston 5 is connected in the hydraulic pressure cavity, and hydraulic pressure cavity is divided into ante-chamber 4 and back cavity 6, one end of piston rod 10 and oil cylinder piston 5 are fixed together by nut, the through hole that the other end passes end cover 9 is exposed to outside the cylinder body 17, the rear end of cylinder body 17 is fixedly connected with a connection piece 12, the below of the rear end of link 12 is provided with first hydraulic fluid port 1, first hydraulic fluid port 1 is communicated with back cavity 6 by first oil circuit, the top of the rear end of link 12 is provided with second hydraulic fluid port 2, second hydraulic fluid port 2 passes through second oil circuit and is connected 4 connections of chamber, oil pipe 8 front, between first oil circuit and second oil circuit, be provided with the connection chamber 11 that is communicated with two oil circuits, the top of connection chamber 11 is provided with and is cylindrical self-locking piston 3, the two ends of self-locking piston 3 are connected with top rod 15 by cone boss, its middle part also is provided with seal groove, the O RunddichtringO is arranged in the seal groove, the bottom of connection chamber 11 is provided with one-way valve 13, the valve body 14 of one-way valve 13 is fixed on the link 12 by screw thread, the inside of one-way valve 13 is provided with steel ball 7, its end is provided with regulates spin-block 16, is provided with a spring between steel ball 7 and adjusting spin-block 16.
The working procedure of explosion stack self-locking oil cylinder:
Eject process: hydraulic oil enters from first hydraulic fluid port 1, hydraulic oil backs down the steel ball 7 in the one-way valve 13, enters in the back cavity 6 through first oil circuit, promotes oil cylinder piston 5 reaches, hydraulic oil in the ante-chamber 4 is gone in the fuel tank for 2 times by second hydraulic fluid port through connecting the oil pipe 8 and second oil circuit.
The withdrawal process: hydraulic oil enters from second hydraulic fluid port 2, through second oil circuit be connected oil pipe 8 and enter ante-chamber 4, make oil cylinder piston 5 withdrawals, meanwhile the two ends of self-locking piston have formed pressure difference, the self-locking piston is moved down, top rod 15 backs down steel ball 7, conducting first oil circuit, and the hydraulic oil of back cavity 6 is got back in the oil cylinder through first oil circuit and first hydraulic fluid port.
The booster self-locking realizes: when unexpected explosion appears in the hydraulic pipe line that connects first hydraulic fluid port 1, because second hydraulic fluid port 2 does not have the pressure effect, the steel ball 7 that the top rod 15 of self-locking piston 3 can not back down one-way valve 13 makes the first oil circuit conducting, hydraulic oil in the back cavity 6 is among the dead space, piston rod 10 can't be regained, and realizes the explosion stack auto-lock function of oil cylinder.
Claims (4)
1. explosion stack self-locking oil cylinder, comprise cylinder body, cylinder body is provided with the hydraulic pressure cavity of front opening, the oil cylinder piston that is provided with piston rod is connected in the hydraulic pressure cavity, one end of cylinder body is provided with end cover, the other end is set with link, first oil circuit that the below of the rear end of link is provided with first hydraulic fluid port and is communicated with back cavity, the top is provided with second hydraulic fluid port and second oil circuit, second oil circuit is communicated with by chamber in front of connecting oil pipe, it is characterized in that: the below of link is provided with the connection chamber that is communicated with first oil circuit and second oil circuit, and the top of connection chamber is provided with the self-locking piston, and one-way valve is fixedly connected on the bottom of connection chamber.
2. explosion stack self-locking oil cylinder according to claim 1, its feature also is: described self-locking piston is the cylindrical body that the middle part offers seal groove, be provided with the O RunddichtringO in the seal groove, cylindrical two ends also are provided with the top rod that is connected with cylindrical body by cone boss.
3. explosion stack self-locking oil cylinder according to claim 1, its feature also is: described one-way valve comprises valve body, and the valve body outside is provided with the screw thread that is connected with link, and its inside is provided with steel ball, the end of valve body is provided with the adjusting spin-block, and spring is arranged at steel ball and regulates between the spin-block.
4. explosion stack self-locking oil cylinder according to claim 1, its feature also is: the center of described end cover is provided with the through hole that cooperates with piston rod, offer a plurality of circular grooves on the through-hole wall, be provided with seal ring in the circular groove, the outside of end cover is provided with screw thread and the seal ring that cooperates with cylinder body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202558407U CN201588832U (en) | 2009-11-27 | 2009-11-27 | Explosion-proof tube self-locking oil cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202558407U CN201588832U (en) | 2009-11-27 | 2009-11-27 | Explosion-proof tube self-locking oil cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201588832U true CN201588832U (en) | 2010-09-22 |
Family
ID=42748611
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202558407U Expired - Lifetime CN201588832U (en) | 2009-11-27 | 2009-11-27 | Explosion-proof tube self-locking oil cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201588832U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102817880A (en) * | 2012-09-11 | 2012-12-12 | 韶关市西马克液压缸有限公司 | Support oil cylinder of rail welding machine |
| CN108374813A (en) * | 2018-03-29 | 2018-08-07 | 宁波长昇流体技术有限公司 | A kind of self-locking oil cylinder |
-
2009
- 2009-11-27 CN CN2009202558407U patent/CN201588832U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102817880A (en) * | 2012-09-11 | 2012-12-12 | 韶关市西马克液压缸有限公司 | Support oil cylinder of rail welding machine |
| CN108374813A (en) * | 2018-03-29 | 2018-08-07 | 宁波长昇流体技术有限公司 | A kind of self-locking oil cylinder |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 213034 No. 19 Tongjiang North Road, Chunjiang Town, Xinbei District, Changzhou City, Jiangsu Province Patentee after: Changzhou Hansen Machinery Co., Ltd. Address before: 213034 No. 19 Tongjiang North Road, Chunjiang Town, Xinbei District, Changzhou City, Jiangsu Province Patentee before: Changzhou Hansen Machinery Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100922 |