CN202946470U - Speed change oil cylinder system - Google Patents
Speed change oil cylinder system Download PDFInfo
- Publication number
- CN202946470U CN202946470U CN 201220256487 CN201220256487U CN202946470U CN 202946470 U CN202946470 U CN 202946470U CN 201220256487 CN201220256487 CN 201220256487 CN 201220256487 U CN201220256487 U CN 201220256487U CN 202946470 U CN202946470 U CN 202946470U
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- oil
- selector valve
- oil pocket
- piston
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Abstract
A speed change oil cylinder system comprises an oil cylinder base, a cylinder barrel fixed on the oil cylinder base, and a piston arranged in the cylinder barrel. A control adjusting bar is fixed in the middle of the oil cylinder base and penetrates through the front portion of the piston and is arranged in a hollow cavity of the piston. Four oil cavities with different stressed areas are arranged among the oil cylinder base, the piston, the cylinder barrel and the control adjusting bar. The control adjusting bar is provided with a first oil pipe and a second oil pipe, wherein the first oil pipe is communicated with a fourth oil cavity, and the second oil pipe is communicated with a second oil cavity. The speed change oil cylinder is further provided with four reversing valves, a hydraulic control one-way valve and a one-way valve. Through integration of combination of an oil cylinder and the system, along with change of pressure, the oil cylinder is correspondingly provided with four different action areas from small to large, and accordingly the best match of output force and speed of the oil cylinder is achieved, a variable displacement mechanism of a high-speed revolution joint is completely avoided from a design, automatic switching of the whole process is achieved, stroke limitation does not exist, and the speed change oil cylinder system is easy to control and capable of greatly reducing cost.
Description
Technical field
The present invention relates to a kind of cylinder system, be specially and a kind ofly can change with load variations the cylinder system of motion speed.
Background technique
Under a lot of operating mode of the prior art, oil cylinder is in whole stroke, requirement is along with the increase of load, speed reduces and thrust increases, and technology in the past is to use the variable displacement with constant power pump to realize, complex structure and cost is very high, stroking mechanism frequent variable under the High Rotation Speed side effect because of pump, the rate of fault of pump is very high, makes the lost of life, affects the whole system operation.And it has just reduced the time that spends in when starting in no-load running.The overall process that can not be used for system's operation.
Summary of the invention
The present invention has designed a kind of speed change cylinder system, has solved present speed change cylinder structure complicated, and the operation troubles rate is high and control the problem of weak effect.
a kind of speed change cylinder system, comprise oil cylinder seat, be fixed on the cylinder barrel on oil cylinder seat, be placed in the piston in cylinder barrel, the first oil pocket is arranged between piston and base, the 3rd oil pocket is arranged between piston and cylinder barrel, it is characterized in that oil cylinder seat central authorities are fixed with the regulating and controlling bar, described regulating and controlling bar stretch in the hollow cavity of piston and the outer wall of regulating and controlling bar and piston hollow cavity inwall between formation the second oil pocket, consist of the 3rd oil pocket between the outer wall of described piston and inner wall of cylinder, consist of the 4th oil pocket between the interior edge face of described regulating and controlling bar front end and piston, the first oil pipe and the second oil pipe are arranged on the regulating and controlling bar, wherein an end of the first oil pipe is communicated with the 4th oil pocket, one end of the second oil pipe is communicated with the second oil pocket, there is the 3rd oil pipe to be communicated with the first oil pocket on oil cylinder seat, the other end of described the 3rd oil pipe is communicated with the B mouth of Pilot operated check valve, described speed change cylinder system, also be provided with four electro-hydraulic reversing valves, selector valve I wherein, the selector valve II is 3-position 4-way O type selector valve, the selector valve III is two-position four-way O type selector valve, the selector valve IV is two-position four way change valve, described the first oil pipe respectively with the A mouth of selector valve I, the P mouth of selector valve II and selector valve III is communicated with, the second oil pipe is communicated with the A mouth of selector valve II, the first oil pocket is communicated with the B mouth of selector valve III, the P mouth of selector valve IV, and the 3rd oil pocket is communicated with the A mouth of selector valve III, the A mouth of selector valve IV, the T mouth connected tank of selector valve I, II, IV, the control mouth of described Pilot operated check valve is communicated with the B mouth of selector valve I through one-way valve,
The speed change oil cylinder divides high speed, high speed, middling speed and low speed level Four forward velocity in a working stroke, and when oil cylinder piston advanced at utmost speed, the second oil pocket was communicated with the pressure oil circuit with the 4th oil pocket; When oil cylinder piston advanced with the high speed degree, the 4th oil pocket connect the pressure oil circuit, the second oil pocket connected tank; When oil cylinder piston advanced with middling speed, the first oil pocket, the 3rd oil pocket and the 4th oil pocket connect the pressure oil circuit, the second oil pocket connected tank; When advancing at a slow speed, the first oil pocket and the 4th oil pocket connect the pressure oil circuit, the second oil pocket and the 3rd oil pocket connected tank when oil cylinder piston; When described oil tank piston advanced with four friction speeds, its pressure oil active area is corresponding four areas of A, B, C, D that increase successively respectively.
The combination of this product by oil cylinder and system integrated, oil cylinder is along with the variation of pressure, under different pressures to different four active areas from small to large should be arranged, thereby realized the perfect cooperation of ouput force and oil cylinder speed, from designing the stroking mechanism of thoroughly having avoided the High Rotation Speed pair, and whole process is conversion automatically all, without travel limits; Control simply, replaced expensive variable displacement with constant power pump with metering pump, cost also greatly reduces thereupon.This product is in a lot of applications, and it has realized that the validation of installed power distributes, and economy and energy-saving benefit are considerable.
Description of drawings
Fig. 1 is speed change cylinder system structural representation.
In figure, 1-piston, 2-cylinder barrel, 3-regulating and controlling bar, 4-one-way valve, 5-oil cylinder seat, 6-the first oil pipe, 7-the second oil pipe, 8-the first oil pocket, 9-the second oil pocket, 10-the 3rd oil pocket, 11-the 4th oil pocket, 12-the 3rd oil pipe, 13-Pilot operated check valve.
Embodiment
The invention will be further described below in conjunction with accompanying drawing.
With reference to accompanying drawing 1, speed change cylinder system of the present invention comprises oil cylinder seat 5, is fixed on the cylinder barrel 2 on oil cylinder seat, and piston 1 is arranged in cylinder barrel.The body of rod of described piston 1 is hollow cavity, be fixed with regulating and controlling bar 3 on oil cylinder seat 5, this regulating and controlling bar 3 penetrates in the hollow cavity of piston 1, by forming four oil pockets between piston 1, cylinder barrel 2, regulating and controlling bar 3 and oil cylinder seat 5, be respectively the first oil pocket 8 that consists of between piston 1 and oil cylinder seat 5, the second oil pocket 9 that consists of between the hollow cavity inwall of the outer wall of regulating and controlling bar 3 and piston 1, the 4th oil pocket 11 that consists of between the 3rd oil pocket 10 that consists of between the inwall of the outer wall of piston 1 and cylinder barrel 2 and the end face of regulating and controlling bar 3 and piston 1 hollow cavity front inner wall.Two oil pipes are arranged, i.e. the first oil pipe 6 and the second oil pipe 7 on regulating and controlling bar 3.
Speed change cylinder system of the present invention is provided with four selector valves, selector valve I wherein, and the selector valve II is 3-position 4-way O type electro-hydraulic reversing valve, and the selector valve III is two-position four-way O type electro-hydraulic reversing valve, and the selector valve IV is the two-position four-way electro-hydraulic reversing valve.Described the 4th oil pocket 11 is communicated with the A mouth of selector valve I, the P mouth of selector valve II, the P mouth of selector valve III by the first oil pipe 6; The second oil pocket 9 is communicated with the A mouth of selector valve II by the second oil pipe 7; The B mouth of the first oil pocket 8 and selector valve III, the P mouth of selector valve IV is communicated with; The A mouth of the 3rd oil pocket 10 and selector valve III, the A mouth of selector valve IV is communicated with; The P mouth Bonding pressure oil circuit Y of selector valve I; The T mouth connected tank of selector valve I, II, IV; The T mouth of selector valve III externally is not communicated with.Also be provided with Pilot operated check valve 13, the A mouth of this Pilot operated check valve leads to fuel tank, and the B mouth is communicated with the first oil pocket 8 by the 3rd oil pipe 12, controls a mouthful K and is communicated with the B mouth of selector valve I through one-way valve 4, is communicated with the A mouth of the second oil pipe 7, selector valve II simultaneously.
The forward velocity of the described speed change cylinder system of the present embodiment is divided into level Four, is respectively high speed, high speed, middling speed, at a slow speed.When speed was high speed, electromagnet 1DT, 5DT got electric, and the second oil pocket 9, the 4th oil pocket 11 are communicated with pressure oil circuit Y through selector valve I, selector valve II, the first oil pipe 6, the second oil pipe 7, and this moment, the active area of pressure oil liquid was A, and piston 1 advances at utmost speed; When speed was high speed, electromagnet 1DT, 6DT got electric, and the 4th oil pocket 11 is communicated with pressure oil circuit Y by the first oil pipe 6, selector valve I, and the second oil pocket 9 is communicated with fuel tank by the second oil pipe 7, selector valve II, and this moment, the active area of pressure oil liquid was B; When speed is middling speed, electromagnet 1DT, 3DT, 6DT get electric, the first oil pocket 8, the 3rd oil pocket 10, the 4th oil pocket 11 is communicated with pressure oil circuit Y by the first oil pipe 6, selector valve I, selector valve III, selector valve IV, the second oil pocket 9 is communicated with fuel tank by the second oil pipe 7, selector valve II, and this moment, the active area of pressure oil liquid was C; When speed at a slow speed the time, electromagnet 1DT, 3DT, 4DT, 6DT get electric, the first oil pocket 8, the 4th oil pocket 11 are communicated with pressure oil circuit Y by the first oil pipe 6, selector valve I, selector valve III, the second oil pocket 9 is communicated with fuel tank by the second oil pipe 7, selector valve II, the 3rd oil pocket 10 is communicated with fuel tank by the selector valve IV, and this moment, the active area of pressure oil liquid was D; In piston 1 advanced process, Pilot operated check valve 13 was constantly the first oil pocket 8 repairings by the 3rd oil pipe 12, guaranteed that piston 1 normally advances.When piston 1 need be return, electromagnet 2DT, 4DT get electric, the second oil pocket 9 is communicated with pressure oil circuit Y by the second oil pipe 7, selector valve I, the 3rd oil pocket 10 is communicated with fuel tank by the selector valve IV, the 4th oil pocket 11 is communicated with fuel tank by the first oil pipe 6, selector valve I, in pressure oil circuit Y, pressure oil enters Pilot operated check valve 13 by selector valve I, one-way valve 4 and controls a mouthful K, make the Pilot operated check valve diconnected, therefore the first oil pocket 8 is communicated with fuel tank by the 3rd oil pipe 12, Pilot operated check valve 13, and piston 1 is return.
The combination of product of the present invention by oil cylinder and system integrated, oil cylinder is along with the variation of pressure, under different pressures to different four active areas from small to large should be arranged, thereby realized the perfect cooperation of ouput force and oil cylinder speed, from designing the stroking mechanism of thoroughly having avoided the High Rotation Speed pair, and whole process is conversion automatically all, without travel limits; Control simply, replaced expensive variable displacement with constant power pump with metering pump, cost also greatly reduces thereupon.This product is in a lot of applications, and it has realized that the validation of installed power distributes, and economy and energy-saving benefit are considerable.
Claims (1)
1. speed change cylinder system, comprise oil cylinder seat (5), be fixed on the cylinder barrel (2) on oil cylinder seat, be placed in the piston (1) in cylinder barrel, the first oil pocket (8) is arranged between piston (1) and base, the 3rd oil pocket (10) is arranged between piston and cylinder barrel, it is characterized in that oil cylinder seat central authorities are fixed with regulating and controlling bar (3), described regulating and controlling bar (3) stretch in the hollow cavity of piston (1) and the outer wall of regulating and controlling bar and piston hollow cavity inwall between formation the second oil pocket (9), consist of the 3rd oil pocket (10) between the outer wall of described piston (1) and cylinder barrel (2) inwall, consist of the 4th oil pocket (11) between the interior edge face of described regulating and controlling bar (3) front end and piston (1), the first oil pipe (6) and the second oil pipe (7) are arranged on the regulating and controlling bar, wherein an end of the first oil pipe (6) is communicated with the 4th oil pocket (11), one end of the second oil pipe (7) is communicated with the second oil pocket (9), there is the 3rd oil pipe (12) to be communicated with the first oil pocket (8) on oil cylinder seat, the other end of described the 3rd oil pipe (12) is communicated with the B mouth of Pilot operated check valve (13),
Described speed change cylinder system also is provided with four electro-hydraulic reversing valves, selector valve I wherein, the selector valve II is 3-position 4-way O type selector valve, the selector valve III is two-position four-way O type selector valve, the selector valve IV is two-position four way change valve, and described the first oil pipe (6) is communicated with the P mouth of A mouth, selector valve II and the selector valve III of selector valve I respectively; The second oil pipe (7) is communicated with the A mouth of selector valve II; The first oil pocket (8) is communicated with the B mouth of selector valve III, the P mouth of selector valve IV, and the 3rd oil pocket (10) is communicated with the A mouth of selector valve III, the A mouth of selector valve IV; The T mouth connected tank of selector valve I, II, IV, the control mouth of described Pilot operated check valve (12) is communicated with the B mouth of selector valve I through one-way valve (4);
The speed change oil cylinder divides high speed, high speed, middling speed and low speed level Four forward velocity in a working stroke, and when oil cylinder piston advanced at utmost speed, the second oil pocket was communicated with the pressure oil circuit with the 4th oil pocket; When oil cylinder piston advanced with the high speed degree, the 4th oil pocket connect the pressure oil circuit, the second oil pocket connected tank; When oil cylinder piston advanced with middling speed, the first oil pocket, the 3rd oil pocket and the 4th oil pocket connect the pressure oil circuit, the second oil pocket connected tank; When advancing at a slow speed, the first oil pocket and the 4th oil pocket connect the pressure oil circuit, the second oil pocket and the 3rd oil pocket connected tank when oil cylinder piston; When described oil tank piston advanced with four friction speeds, its pressure oil active area is corresponding four areas of A, B, C, D that increase successively respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220256487 CN202946470U (en) | 2012-06-02 | 2012-06-02 | Speed change oil cylinder system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220256487 CN202946470U (en) | 2012-06-02 | 2012-06-02 | Speed change oil cylinder system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202946470U true CN202946470U (en) | 2013-05-22 |
Family
ID=48422176
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220256487 Expired - Lifetime CN202946470U (en) | 2012-06-02 | 2012-06-02 | Speed change oil cylinder system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202946470U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102678654A (en) * | 2012-06-02 | 2012-09-19 | 山西高行液压股份有限公司 | Variable-speed oil cylinder system |
| CN106996405A (en) * | 2017-04-17 | 2017-08-01 | 佛山市恒力泰机械有限公司 | A kind of stage variable pressure oil cylinder and its control method |
-
2012
- 2012-06-02 CN CN 201220256487 patent/CN202946470U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102678654A (en) * | 2012-06-02 | 2012-09-19 | 山西高行液压股份有限公司 | Variable-speed oil cylinder system |
| CN106996405A (en) * | 2017-04-17 | 2017-08-01 | 佛山市恒力泰机械有限公司 | A kind of stage variable pressure oil cylinder and its control method |
| CN106996405B (en) * | 2017-04-17 | 2019-05-10 | 佛山市恒力泰机械有限公司 | A kind of stage variable pressure oil cylinder and its control method |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130522 |
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| CX01 | Expiry of patent term |