CN202031914U - Duplex telescopic cylinder - Google Patents
Duplex telescopic cylinder Download PDFInfo
- Publication number
- CN202031914U CN202031914U CN2011200692057U CN201120069205U CN202031914U CN 202031914 U CN202031914 U CN 202031914U CN 2011200692057 U CN2011200692057 U CN 2011200692057U CN 201120069205 U CN201120069205 U CN 201120069205U CN 202031914 U CN202031914 U CN 202031914U
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- Prior art keywords
- oil cylinder
- oil
- cylinder
- communicated
- piston rod
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Abstract
The utility model discloses a duplex telescopic cylinder, which comprises a one-stage cylinder and a two-stage cylinder, wherein the inner cavities of the two cylinders are divided into front cavities and rear cavities through pistons, the inner cavities of two piston rods are communicated with the respective rear cavities, and the piston rod of the two-stage cylinder is fixedly connected with the cylinder body of the one-stage cylinder; a fixed oil pipe is arranged in the inner cavity of the piston rod of the one-stage cylinder, the outer end of the piston rod of the one-stage cylinder is fixedly connected with a connecting block, the connecting block is provided with two oil inlet passages with one passage communicated with the inner cavity of the piston rod of the one-stage cylinder and the other passage communicated with the fixed oil pipe; a movable oil pipe is arranged in the fixed oil pipe and communicated with the front cavity of the one-stage cylinder; an oil inlet pipe is arranged in the inner cavity of the piston rod of the two-stage cylinder, one end of the oil inlet pipe penetrates the piston to be communicated with the front cavity of the two-stage cylinder, the other end of the oil inlet pipe is communicated with the movable oil pipe through a sequence valve, and the inner cavity of the piston rod of the two-stage cylinder is communicated with the rear cavity of the one-stage cylinder; and a stopping block is connected with the cylinder body of the two-stage cylinder. The duplex telescopic cylinder has a compact structure, is simple in controlling the oil circuit, and is convenient to mount and use.
Description
Technical field
The utility model relates to oil cylinder, is specifically related to a kind of duplex telescopic oil cylinder.
Background technique
Oil cylinder is widely used as the power source of various machineries as the dynamical element in the hydraulic system.Existing oil cylinder mostly is the simply connected formula greatly, it is the combination of single cylinder and single-piston rod, the stroke of simply connected formula oil cylinder depends on the length of cylinder body and piston rod, in the mechanical transmission of the big stroke of needs, the length of simply connected formula oil cylinder will be accomplished very long, it is big to take up room, and causes the span of whole machinery big, and structure is not compact yet.In order to reduce to take up room, people also often adopt the mode of two oil cylinder parallel connections, and promptly an oil cylinder action is earlier moved behind the another oil cylinder, though this kind mode has solved the big problem of span, the power transmission structure of equipment has been complicated.In addition, two oil cylinders work alone separately, do not have relevance, want to make two cylinder actions to coordinate, and the control of its oil circuit is also very complicated.
Summary of the invention
The technical problems to be solved in the utility model is at above-mentioned defective, and a kind of compact structure, oil circuit control big stroke duplex telescopic oil cylinder simple and easy to install are provided.
In order to solve the problems of the technologies described above, the utility model provides a kind of duplex telescopic oil cylinder with following structure, comprise two oil cylinders of firsts and seconds, the inner chamber of cylinder block of two oil cylinders is the boundary with the piston, piston rod place one side is a back cavity, opposite side is an ante-chamber, and its structural feature is the inner chamber that the piston rod of one-level oil cylinder and two-level oil cylinder is equipped with the whole piston rod of axial perforation and is communicated with separately back cavity, and the piston rod outer end of two-level oil cylinder is fixed on the cylinder body of one-level oil cylinder; Be provided with fixedly oil pipe in the inner chamber of one-level oil cylinder piston bar, the piston rod outer end of one-level oil cylinder is connected with contiguous block, and contiguous block is provided with two oil inlet passages, and an oil inlet passage is communicated with the inner chamber of one-level oil cylinder piston bar, and another oil inlet passage is communicated with fixing oil pipe; Be connected with on the cylinder body of one-level oil cylinder and be slidingly connected in the piston and pierce into the fixedly movable oil pipe of oil pipe, movable oil pipe is communicated with the ante-chamber of one-level oil cylinder by having the one-way valve that presses bar; Be provided with oil inlet pipe in the inner chamber of two-level oil cylinder's piston rod, oil inlet pipe one end pierces into piston and is communicated with the ante-chamber of two-level oil cylinder, and the oil inlet pipe the other end is communicated with movable oil pipe by sequence valve, and the inner chamber of the piston rod of two-level oil cylinder is communicated with the back cavity of one-level oil cylinder; Be connected with on the cylinder body of two-level oil cylinder and can push the block that presses bar.
Be connected with the equilibrium valve that is communicated with two oil inlet passages on the described contiguous block.
The duplex telescopic oil cylinder of said structure, the piston rod of one oil cylinder and the cylinder body of another oil cylinder are fixed together, and make the two become organic whole, though be the rigidly connected of two oil cylinders in form, but do not have much different, thereby easy to install with the installation Placement of single oil cylinder; The action earlier of the cylinder body of one oil cylinder drives moving of another oil cylinder, the oil cylinder that band moves earlier reaches capacity behind the position, the cylinder body of another oil cylinder begins action, realize big stroke by stretching of two cylinder body relay-types, the shared same oil inlet and oil return pipeline of two oil cylinders, the control of not only compact structure, and oil circuit is simple.
In sum, advantage of the present utility model is: compact structure, oil circuit control are simply, and is easy to install.
Description of drawings
Below in conjunction with accompanying drawing embodiment of the present utility model is described in further detail:
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the structural representation along A-A line among Fig. 1.
Embodiment
As depicted in figs. 1 and 2, the duplex telescopic oil cylinder comprises two oil cylinders of firsts and seconds, press the direction of Fig. 1 shown on drawing, the oil cylinder on the right side is the one-level oil cylinder, the oil cylinder on the left side is a two-level oil cylinder, the inner chamber of the cylinder body of two oil cylinders is the boundary with the piston, and a side of piston is an ante-chamber, and the opposite side of piston is that piston rod place one side is a back cavity.The inner chamber that the piston rod of one-level oil cylinder and two-level oil cylinder is equipped with the whole piston rod of axial perforation and is communicated with separately back cavity, piston rod 1 outer end of two-level oil cylinder is fixed on the cylinder body 3 of one-level oil cylinder by connecting sleeve 2; Be provided with fixedly oil pipe 6 in the one-level oil cylinder piston bar inner chamber 5, piston rod 7 outer ends of one-level oil cylinder are connected with contiguous block 8, and equilibrium valve 9 is housed on the contiguous block 8.Be provided with two oil inlet passages in the contiguous block 8, the A filler opening 16 of equilibrium valve 9 by wherein an oil inlet passage, one-level oil cylinder piston bar inner chamber 5 and the oil-through hole 27 that is located on the inner chamber chamber wall of one-level oil cylinder piston bar be communicated with the back cavity 18 of one-level oil cylinder, the B filler opening 26 of equilibrium valve 9 is communicated with fixing oil pipe 6 by another oil inlet passage; Be connected with in the piston 10 that is slidingly connected at the one-level oil cylinder on the cylinder body 3 of one-level oil cylinder and pierce into the fixedly movable oil pipe 11 of oil pipe 6, be connected with branch part 12 on the cylinder body 3 of one-level oil cylinder, divide one-way valve 13 is housed in the part 12 and can drives that one-way valve 13 opens press bar 14, movable oil pipe 11 is communicated with the ante-chamber 15 of one-level oil cylinder by oil circuit and the one-way valves 13 that are located in the branch part 12.Be provided with the piston 20 that an end pierces into two-level oil cylinder in the inner chamber 19 of two-level oil cylinder's piston rod and be communicated with oil inlet pipe 22 with the ante-chamber 21 of two-level oil cylinder, oil inlet pipe 22 the other ends are by sequence valve 23 and divide the oil circuit in the part 12 to be communicated with movable oil pipe 11, the inner chamber 19 of two-level oil cylinder's piston rod is communicated with the back cavity 18 of one-level oil cylinder by pipeline, and the inner chamber 19 of two-level oil cylinder's piston rod is communicated with the back cavity 24 of two-level oil cylinder by the oil through 28 that is located on its chamber wall; Be connected with on the cylinder body 17 of two-level oil cylinder and can push the block 25 that presses bar 14.
Below in conjunction with accompanying drawing the duplex telescopic oil cylinder course of action of said structure being done one specifically describes.One, oil cylinder stretch out action: hydraulic oil enters fixedly oil pipe 6 through the B of equilibrium valve 9 filler opening 26, enter the oil circuit in the branch part 12 and one-way valve 13 backed down through movable oil pipe 11 again, hydraulic oil enters the ante-chamber 15 of one-level oil cylinder through one-way valve 13, the cylinder body 3 that drives the one-level oil cylinder stretches out, two-level oil cylinder moves ahead with the cylinder body of one-level oil cylinder, this moment, two-level oil cylinder was failure to actuate because oil pressure does not also reach the pressure that sequence valve 23 is opened; The cylinder body for the treatment of the one-level oil cylinder reaches capacity behind the position, and along with the rising of oil pressure, sequence valve 23 is opened, and hydraulic oil arrives the cylinder body 17 that the ante-chamber 21 of two-level oil cylinders drives two-level oil cylinders through sequence valve 23, oil inlet pipe 22 and stretches out.Two, the withdrawal action of oil cylinder: hydraulic oil is through the A of equilibrium valve 9 filler opening 16, one-level oil cylinder piston bar inner chamber 5 enters in the back cavity 18 of one-level oil cylinder, at this moment, hydraulic oil in the ante-chamber 15 of one-level oil cylinder is in pressured state, one-way valve 13 is in closed condition, hydraulic oil in the ante-chamber 15 of one-level oil cylinder can not gush, the cylinder body 3 of one-level oil cylinder is failure to actuate, enter the inner chamber 19 that hydraulic oil in the back cavity 18 of one-level oil cylinder can only constantly enter two-level oil cylinder's piston rod by the road, enter the back cavity 24 of two-level oil cylinder's piston rod again, drive cylinder body 17 retractions of two-level oil cylinder, hydraulic oil in the ante-chamber 21 of two-level oil cylinder gushes from B filler opening 26 through its oil-feed path, after cylinder body 17 retractions of two-level oil cylinder put in place, block 25 is pushed and is pressed bar 14 one-way valve 13 is opened, because the cylinder body 17 of two-level oil cylinder has bounced back and has put in place, hydraulic oil no longer enters the inner chamber 19 of two-level oil cylinder's piston rod, the hydraulic oil that constantly enters in the back cavity 18 of one-level oil cylinder drives cylinder body 3 retractions of one-level oil cylinder, thereby finishes an expanding-contracting action of duplex telescopic oil cylinder.
Claims (2)
1. duplex telescopic oil cylinder, comprise two oil cylinders of firsts and seconds, the inner chamber of cylinder block of two oil cylinders is the boundary with the piston, piston rod place one side is a back cavity, opposite side is an ante-chamber, the inner chamber that the piston rod that it is characterized in that one-level oil cylinder and two-level oil cylinder is equipped with the whole piston rod of axial perforation and is communicated with separately back cavity, the piston rod outer end of two-level oil cylinder is fixed on the cylinder body of one-level oil cylinder; Be provided with fixedly oil pipe in the inner chamber of one-level oil cylinder piston bar, the piston rod outer end of one-level oil cylinder is connected with contiguous block, and contiguous block is provided with two oil inlet passages, and an oil inlet passage is communicated with the inner chamber of one-level oil cylinder piston bar, and another oil inlet passage is communicated with fixing oil pipe; Be connected with on the cylinder body of one-level oil cylinder and be slidingly connected in the piston and pierce into the fixedly movable oil pipe of oil pipe, movable oil pipe is communicated with the ante-chamber of one-level oil cylinder by having the one-way valve that presses bar; Be provided with oil inlet pipe in the inner chamber of two-level oil cylinder's piston rod, oil inlet pipe one end pierces into piston and is communicated with the ante-chamber of two-level oil cylinder, and the oil inlet pipe the other end is communicated with movable oil pipe by sequence valve, and the inner chamber of the piston rod of two-level oil cylinder is communicated with the back cavity of one-level oil cylinder; Be connected with on the cylinder body of two-level oil cylinder and can push the block that presses bar.
2. duplex telescopic oil cylinder as claimed in claim 1 is characterized in that being connected with on the described contiguous block equilibrium valve that is communicated with two oil inlet passages.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200692057U CN202031914U (en) | 2011-03-16 | 2011-03-16 | Duplex telescopic cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200692057U CN202031914U (en) | 2011-03-16 | 2011-03-16 | Duplex telescopic cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202031914U true CN202031914U (en) | 2011-11-09 |
Family
ID=44894212
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200692057U Expired - Fee Related CN202031914U (en) | 2011-03-16 | 2011-03-16 | Duplex telescopic cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202031914U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108457924A (en) * | 2017-12-12 | 2018-08-28 | 湖南百特随车起重机有限公司 | Extension and contraction control valve, Multi-cylinder pushing handle telescopic control mechanism and Multi-cylinder driving device in proper order |
-
2011
- 2011-03-16 CN CN2011200692057U patent/CN202031914U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108457924A (en) * | 2017-12-12 | 2018-08-28 | 湖南百特随车起重机有限公司 | Extension and contraction control valve, Multi-cylinder pushing handle telescopic control mechanism and Multi-cylinder driving device in proper order |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111109 Termination date: 20140316 |