CN201739261U - Rodless cavity buffer starting structure of oil cylinder - Google Patents
Rodless cavity buffer starting structure of oil cylinder Download PDFInfo
- Publication number
- CN201739261U CN201739261U CN2010202983226U CN201020298322U CN201739261U CN 201739261 U CN201739261 U CN 201739261U CN 2010202983226 U CN2010202983226 U CN 2010202983226U CN 201020298322 U CN201020298322 U CN 201020298322U CN 201739261 U CN201739261 U CN 201739261U
- Authority
- CN
- China
- Prior art keywords
- oil
- buffer
- cylinder body
- piston rod
- cylinder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Actuator (AREA)
Abstract
The utility model discloses a rodless cavity buffer starting structure of an oil cylinder. The head of a piston rod extending into a cylinder body is connected with a piston; the front end of the head of the piston rod is provided with a buffer pin; the bottom of the cylinder body is provided with a buffer hole matched with the buffer pin; the cylinder body is provided with an oil feeding hole communicated with the buffer hole and the cylinder body is also provided with an oil compensation channel communicating the buffer hole with the inner cavity of the cylinder body; and a one-way throttle valve is arranged at a port where the oil compensation channel and the buffer hole are communicated. When the piston rod moves to be close to the bottom of the cylinder, buffer is firstly realized through the matching of the buffer pin with the buffer hole; when the piston rod needs to be retreated by hydraulic oil after completely proceeding to the bottom of the cylinder, the hydraulic oil is fed via the oil feeding hole; then on the one hand, the hydraulic oil can exert pressure to the piston rod from the buffer hole; and on the other hand, the hydraulic oil can open the one-way throttle valve and enter the inner cavity of the cylinder body from the oil compensation channel to exert pressure to the piston, therefore, the starting pressure of the oil cylinder can be reduced to a greater extent.
Description
Technical field
The utility model relates to a kind of oil cylinder, specifically a kind of buffer starting structure for oil cylinder rodless cavity.
Background technique
The buffer structure of existing a kind of oil cylinder rodless cavity is: the head that stretches into the piston rod in the cylinder body is connected with piston, the front end of piston rod head is equipped with cushion pins, bottom in the cylinder body has the cushion hole that cooperates with cushion pins, has the oil through that communicates with cushion hole on the cylinder body.Because this oil cylinder is when piston rod is walked near cylinder bottom, by cushioning cushion pins and cooperating of cushion hole, the problem of bringing thus is: cushion pins and cushion hole matching gap are less, in the time of after piston rod advances to cylinder bottom fully, need ejecting piston rod by hydraulic oil again, only depend on from the outside and by the hydraulic oil that oil through enters and push piston open, then need very high starting pressure from the cushion hole position.
The model utility content
The purpose of this utility model is to provide a kind of buffer starting structure for oil cylinder rodless cavity, and this buffer starting structure can make the starting pressure of oil cylinder less.
For achieving the above object, the utility model adopts following scheme: buffer starting structure for oil cylinder rodless cavity, the head that stretches into the piston rod in the cylinder body is connected with piston, the front end of piston rod head is equipped with cushion pins, bottom in the cylinder body has the cushion hole that cooperates with cushion pins, have the oil through that communicates with cushion hole on the cylinder body, be provided with the repairing passage that is communicated with cushion hole and inner chamber of cylinder block on cylinder body, the port that communicates with cushion hole at the repairing passage is provided with one-way throttle valve.
By such scheme as seen, when piston rod is walked near cylinder bottom, earlier by cushioning cushion pins and cooperating of cushion hole, this moment, fluid had seldom a part pass through from one-way throttle valve, in the time of after piston rod advances to cylinder bottom fully, need ejecting piston rod by hydraulic oil again, feed hydraulic oil from oil through, hydraulic oil can be exerted pressure to piston rod from the cushion hole position first, second can open one-way throttle valve exerts pressure to piston from the inner chamber that the repairing passage enters into cylinder body, so, the starting pressure of oil cylinder is reduced largely.
The utility model is rational in infrastructure, reliable, and its starting pressure is little, and the performance of continuous action is good, and can effectively improve the working life of pump in the hydraulic system, valve.
Description of drawings
Accompanying drawing is the utility model one embodiment's a structural drawing.
Embodiment
Further specify the utility model below in conjunction with embodiment and accompanying drawing.
Referring to accompanying drawing
The buffer starting structure for oil cylinder rodless cavity that the utility model provides is: piston 3 is connected in the head that stretches into the piston rod 4 in the cylinder body 1, the front end of piston rod 4 heads is equipped with cushion pins 2, bottom in the cylinder body 1 has the cushion hole 1b that cooperates with cushion pins 2, have the oil through 1a that communicates with cushion hole 1b on the cylinder body 1, be provided with the repairing passage 1c that is communicated with cushion hole 1b and inner chamber of cylinder block on cylinder body 1, the port that communicates with cushion hole 1b at repairing passage 1c is provided with one-way throttle valve 5.
By accompanying drawing as seen, piston rod 4 is to when retraction, and one-way throttle valve 5 is in throttle, when piston rod 4 is walked bottom near cylinder body 1, by cushioning cushion pins 2 and cooperating of cushion hole 1b; When piston rod 4 advances to when needing to stretch out again after cylinder bottom stops, pass through oil through 1a to cushion hole 1b fuel feeding by the external world, hydraulic oil can be exerted pressure to piston rod, from cushion hole 1b position simultaneously, one-way throttle valve 5 is opened, and hydraulic oil directly enters in the cylinder body 1 by repairing passage 1c and exerts pressure to piston 3.
Claims (1)
1. buffer starting structure for oil cylinder rodless cavity, the head that stretches into the piston rod in the cylinder body is connected with piston, the front end of piston rod head is equipped with cushion pins, bottom in the cylinder body has the cushion hole that cooperates with cushion pins, have the oil through that communicates with cushion hole on the cylinder body, it is characterized in that: be provided with the repairing passage that is communicated with cushion hole and inner chamber of cylinder block on cylinder body, the port that communicates with cushion hole at the repairing passage is provided with one-way throttle valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202983226U CN201739261U (en) | 2010-08-20 | 2010-08-20 | Rodless cavity buffer starting structure of oil cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202983226U CN201739261U (en) | 2010-08-20 | 2010-08-20 | Rodless cavity buffer starting structure of oil cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201739261U true CN201739261U (en) | 2011-02-09 |
Family
ID=43554537
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202983226U Expired - Fee Related CN201739261U (en) | 2010-08-20 | 2010-08-20 | Rodless cavity buffer starting structure of oil cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201739261U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101915252A (en) * | 2010-08-20 | 2010-12-15 | 蚌埠天地重型机械制造股份有限公司 | Buffer starting structure for oil cylinder rodless cavity |
| CN106151167A (en) * | 2016-06-30 | 2016-11-23 | 广州嘉泰液压机电有限公司 | Hydraulic Double bumper post plug cylinder |
-
2010
- 2010-08-20 CN CN2010202983226U patent/CN201739261U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101915252A (en) * | 2010-08-20 | 2010-12-15 | 蚌埠天地重型机械制造股份有限公司 | Buffer starting structure for oil cylinder rodless cavity |
| CN106151167A (en) * | 2016-06-30 | 2016-11-23 | 广州嘉泰液压机电有限公司 | Hydraulic Double bumper post plug cylinder |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101929486B (en) | Composite oil cylinder | |
| CN201401386Y (en) | Parallel-connection type gas-liquid booster cylinder | |
| CN201739261U (en) | Rodless cavity buffer starting structure of oil cylinder | |
| CN101915252A (en) | Buffer starting structure for oil cylinder rodless cavity | |
| CN201747696U (en) | Compound oil cylinder | |
| CN210371437U (en) | High-efficiency energy-saving pressure-increasing type quick oil cylinder | |
| CN201787101U (en) | Pneumatic parallel gate valve | |
| CN202031908U (en) | Fast forward cylinder | |
| CN201851421U (en) | Fast injection oil cylinder | |
| CN102878145B (en) | Energy-saving crust cylinder for electrolytic aluminium industry | |
| CN202118323U (en) | Decompression valve of oil pump | |
| CN202971410U (en) | Double-stroke cylinder | |
| CN115573968A (en) | Built-in double-acting quick cylinder | |
| CN202017675U (en) | Novel oil cylinder | |
| CN201739262U (en) | Buffer starting structure for oil cylinder rod chamber | |
| CN201244890Y (en) | Nose spike oil cylinder structure of injection moulding machine | |
| CN204386973U (en) | A kind of hydrovalve of oil return circuit band auto-lock function | |
| CN202883548U (en) | Grate cooler buffering device | |
| CN210829925U (en) | Oil circuit system of oil cylinder of top-loading hydraulic press | |
| CN204186676U (en) | Oil cylinder of hydraulic headstock gear locking device | |
| CN206917966U (en) | Anti-return cylinder structure | |
| CN201566106U (en) | Primary-secondary module cylinder of injection molding machine | |
| CN201460727U (en) | Drill boom horizontal movement system | |
| CN201934410U (en) | Oil distributing valve of hydraulic hammer | |
| CN204878877U (en) | Draw lapse check valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Buffer starting structure for oil cylinder rodless cavity Effective date of registration: 20130628 Granted publication date: 20110209 Pledgee: Bengbu financing guarantee Group Co., Ltd. Pledgor: Bengbu Tiandi Heavy Machinery Manufacturing Co., Ltd. Registration number: 2013990000414 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20140918 Granted publication date: 20110209 Pledgee: Bengbu financing guarantee Group Co., Ltd. Pledgor: Bengbu Tiandi Heavy Machinery Manufacturing Co., Ltd. Registration number: 2013990000414 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110209 Termination date: 20140820 |
|
| EXPY | Termination of patent right or utility model |