CN214465244U - Novel fast-out slow-return hydraulic cylinder - Google Patents
Novel fast-out slow-return hydraulic cylinder Download PDFInfo
- Publication number
- CN214465244U CN214465244U CN202120470511.5U CN202120470511U CN214465244U CN 214465244 U CN214465244 U CN 214465244U CN 202120470511 U CN202120470511 U CN 202120470511U CN 214465244 U CN214465244 U CN 214465244U
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- 125000006850 spacer group Chemical group 0.000 claims description 11
- 230000001105 regulatory effect Effects 0.000 claims description 9
- 230000007246 mechanism Effects 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 6
- 230000006978 adaptation Effects 0.000 claims 1
- 239000003921 oil Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 239000010720 hydraulic oil Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
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Abstract
The utility model discloses a novel go out at a fast speed and return pneumatic cylinder belongs to pneumatic cylinder technical field, including the cylinder, the left end lid, right-hand member lid and inside piston shaft that is equipped with the cavity runner, the cylinder, the left end lid, the medium cavity that the right-hand member lid encloses into jointly and holds the medium, the piston shaft runs through cylinder and both ends and stretches out the left end lid respectively, the right-hand member lid, the piston shaft includes piston shaft I and piston shaft II, piston shaft I and piston shaft II pass through the piston connection, the piston divide into cavity I and cavity II with the medium cavity, be equipped with the left through-flow mouth that is used for intercommunication cavity I and cavity runner on the piston shaft I, be equipped with the right through-flow mouth that is used for intercommunication cavity II and cavity runner on the piston shaft II, be equipped with the check valve that intercommunication/section cavity I and cavity II switched on the piston. By adding the check valve component and utilizing the one-way conduction principle of the check valve, the required tension for extending the piston rod of the hydraulic cylinder is extremely small, and when the piston rod of the hydraulic cylinder retracts, the check valve is blocked, so that the aim of slowly withdrawing the piston rod is fulfilled.
Description
Technical Field
The utility model belongs to the technical field of the pneumatic cylinder, concretely relates to inner loop goes out slow return pneumatic cylinder soon.
Background
The tradition is used for slowly closing the pneumatic cylinder of check valve, and the outside has high pressure fuel pipe and governing valve, and governing valve both ends high pressure fuel pipe connects respectively before the pneumatic cylinder, the back chamber, controls piston rod moving speed through the hydraulic oil flow size in the governing valve adjustment oil circuit for on the check valve, (stop the pump or have a power failure) the valve plate receive backward flow medium effort when medium refluence, transmit in the pneumatic cylinder piston rod through the valve shaft, under the pneumatic cylinder damping effect, the check valve has slowly closed effect. The hydraulic cylinder has the following defects: 1. the solution leaks oil at the joint of the external oil pipe; 2. the piston rod is controlled by the opening of the regulating valve during reciprocating movement; under the actual working condition of the valve, the force acting on the valve shaft when the pump is started is small, so that the piston rod is not easy to pull out (or the time is long), and the ring ratio effect cannot be realized under many conditions.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an inner loop goes out slow return pneumatic cylinder soon, through increasing check valve subassembly, the pneumatic cylinder piston rod stretches out required pulling force minimum, can adjust the cavity I to II hydraulic oil flow rates of cavity through adjusting screw to realize the purpose that the piston rod goes out slowly soon.
In order to achieve the above purpose, the utility model adopts the following technical scheme: a novel fast-out slow-return hydraulic cylinder comprises a cylinder barrel, a left end cover, a right end cover and a piston shaft with a hollow flow passage arranged inside, wherein the cylinder barrel, the left end cover and the right end cover jointly enclose a medium chamber for accommodating a medium, the left end cover is provided with a medium inlet for adding a medium into the medium cavity, the medium inlet is connected with a plug, the piston shaft penetrates through the cylinder barrel, two ends of the piston shaft respectively extend out of the left end cover and the right end cover, the piston shaft comprises a piston shaft I and a piston shaft II, the piston shaft I and the piston shaft II are connected through a piston, the piston divides the medium chamber into a chamber I and a chamber II, a left through flow port for communicating the chamber I with the hollow flow passage is arranged on the piston shaft I, and a right through flow port for communicating the cavity II with the hollow flow passage is arranged on the piston shaft II, and a one-way valve for communicating/intercepting the cavity I and the cavity II is arranged on the piston.
Preferably, the piston is provided with an auxiliary flow passage for communicating the chamber I and the chamber II, and the one-way valve is arranged on the auxiliary flow passage; the check valve comprises a valve core, a valve seat and a spring, an assembly groove I for installing the valve seat and an assembly groove II for installing the spring are formed in the auxiliary flow channel, and the valve core is tightly installed in the valve seat through the spring.
Preferably, the auxiliary flow channels are multiple, the multiple auxiliary flow channels are uniformly arranged along the circumferential direction of the piston, and each auxiliary flow channel is provided with a one-way valve.
Preferably, the number of the auxiliary flow channels is 2, and the 2 auxiliary flow channels are symmetrically arranged.
Preferably, a flow adjusting mechanism for adjusting the conduction area of the left through-flow opening is arranged on the piston shaft I.
Preferably, the flow regulating mechanism comprises an adjusting screw rod, the adjusting screw rod is connected with a plug for regulating the conduction area of the left through-flow opening, the end part of the plug is connected with a sealing ring I, an assembling hole matched with the adjusting screw rod is axially arranged on the piston shaft I, and the assembling hole is communicated with the hollow flow passage.
Preferably, the left through-flow opening comprises a left through-flow opening I arranged at the top of the piston shaft I and a left through-flow opening II arranged at the bottom of the piston shaft I, the section of the left through-flow opening I along the length direction of the piston shaft is of an elliptic key groove structure, and the section of the left through-flow opening II along the length direction of the piston shaft is of a circular structure.
Preferably, the number of the left flow openings II is 3.
Preferably, the right through-flow opening comprises a right through-flow opening I arranged at the top of the piston shaft II and a right through-flow opening II arranged at the bottom of the piston shaft II, and the right through-flow opening I and the right through-flow opening II are symmetrically arranged and have consistent structures.
Preferably, the inner side of the left end cover is provided with a spacer sleeve I, and the inner side of the right end cover is provided with a spacer sleeve II.
Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses simple structure, the practicality is strong, and for the inner loop, there is not outside subassembly, can not the oil leak, need not to maintain, through set up the check valve on the piston, can realize the purpose that the piston rod goes out slowly and returns soon.
Drawings
Fig. 1 is a schematic view of the structural state of the present invention;
FIG. 2 is a schematic view of another structure of the present invention;
fig. 3 is a schematic view of an assembly state of the adjusting mechanism, the piston shaft i and the piston in the present invention;
FIG. 4 is a schematic view of the assembled state of the piston, the check valve and the piston shaft II of the present invention;
in the figure: the device comprises a cylinder barrel 100, a chamber I-101, a chamber II-102, a right end cover 200, a spacer sleeve I-301, a spacer sleeve II-302, a left end cover 400, a medium inlet 401, a plug 500, a sealing ring II-501, a piston shaft I-600, a left through flow port I-601, a left through flow port II-602, a piston shaft II-700, a right through flow port I-701, a right through flow port II-702, a flow adjusting mechanism 800, an adjusting screw 801, a plug 802, a sealing ring I-803, a piston 900, an auxiliary flow passage 901, a one-way valve 1000, a valve core 1001, a valve seat 1002 and a spring 1003.
Detailed Description
For a better understanding of the present invention by those skilled in the art, the present invention will be further described with reference to the following detailed description:
as shown in fig. 1 to 4, a novel fast-out slow-return hydraulic cylinder comprises a cylinder barrel 100, a right end cover 200, a left end cover 400 and a piston shaft with a hollow flow passage arranged inside, wherein a spacer sleeve i-301 is arranged on the inner side of the left end cover 400, a spacer sleeve ii-302 is arranged on the inner side of the right end cover 200, the cylinder barrel 100, the right end cover 200, the spacer sleeve i-301, the spacer sleeve ii-302 and the left end cover 400 jointly enclose a medium chamber for accommodating a medium, a medium inlet 401 for adding the medium into the medium chamber is arranged on the left end cover 400, a plug 500 is connected to the medium inlet 401, and a sealing ring ii-501 is arranged between the plug 500 and the medium inlet 201.
The piston shaft penetrates through the cylinder barrel 100, two ends of the piston shaft respectively extend out of the right end cover 200 and the left end cover 400, the piston shaft comprises a piston shaft I-600 and a piston shaft II-700, the piston shaft I-600 is connected with the piston shaft II-700 through a piston 900, the piston 900 divides a medium cavity into a cavity I-101 and a cavity II-102, a left through flow port for communicating the cavity I-101 with the hollow flow channel is formed in the piston shaft I-600, and a right through flow port for communicating the cavity II-102 with the hollow flow channel is formed in the piston shaft II.
As a preferred embodiment of the embodiment, the left through-flow port comprises a left through-flow port I-601 arranged at the top of the piston shaft I-600 and a left through-flow port II-602 arranged at the bottom of the piston shaft I-600, the cross section of the left through-flow port I-601 along the length direction of the piston shaft is in an elliptic key groove type structure, the cross section of the left through-flow port II-602 along the length direction of the piston shaft is in a circular structure, the left through-flow port II-602 is a through hole vertically penetrating through the bottom of the piston shaft I-600, and 3 left through-flow ports II-602 are preferred.
As a preferred embodiment of the embodiment, the right through-flow opening comprises a right through-flow opening I-701 arranged at the top of the piston shaft II-700 and a right through-flow opening II-702 arranged at the bottom of the piston shaft II-700, and the right through-flow opening I-701 and the right through-flow opening II-702 are symmetrically arranged and have the same structure.
In order to achieve the purpose of fast-out and slow-back of the piston rod, a one-way valve 1000 for communicating/blocking the chambers I-101 and II-102 is arranged on the piston 900. Specifically, the piston 900 is provided with an auxiliary flow passage 901 for communicating the chambers I-101 and II-102, and the check valve is installed on the auxiliary flow passage.
The check valve in this embodiment includes a valve core 1001, a valve seat 1002 and a spring 1003, an assembly groove i for installing the valve seat 1002 and an assembly groove ii for installing the spring 1003 are provided on the auxiliary flow passage 901, and the valve core 1001 is tightly mounted in the valve seat 1002 through the spring 1003, so that the valve core 1001 blocks/opens a passage in the valve seat 1002.
The number of the auxiliary flow passages 901 may be, for example, 2, 3, 4, etc., a plurality of the auxiliary flow passages 901 are uniformly arranged along the circumferential direction of the piston 900, and each of the auxiliary flow passages 901 is provided with a check valve 1000.
Preferably, there are 2 auxiliary flow passages 901, and the 2 auxiliary flow passages 901 are symmetrically disposed at upper and lower positions of the piston 900.
And a flow regulating mechanism 800 for regulating the conduction area of the left through-flow opening is arranged on the piston shaft I-600.
As a preferred embodiment of this embodiment, the flow regulating mechanism 800 includes an adjusting screw 801, a plug 802 for regulating the conduction area of the left through-flow opening is connected to the adjusting screw 801, a sealing ring i-803 is connected to the end of the plug 802, and an assembly hole adapted to the adjusting screw 801 is axially formed in the piston shaft i-600 and is communicated with the hollow flow passage.
The plug 802 can completely plug the left through-flow port I-601 and the left through-flow port II-602, and can also plug part of the left through-flow port I-601 and the left through-flow port II-602, when the plug is used, the inward screwing state of the plug 802 is adjusted through the adjusting screw rod 801, the situation that the plug 802 plugs the left through-flow port is adjusted, and then the retracting movement speed of the piston II-700 is adjusted.
The working principle is as follows: before use, the adjusting screw 801 is adjusted (forward rotation) to enable the plug 802 to be screwed inwards to completely block the left through-flow port I-601 and the left through-flow port II-602, the plug 500 is opened, medium (oil) is input into the medium cavity until the piston moves to the position of the spacing sleeve II-302 (the piston shaft II is in an extending state), the medium inlet 201 is sealed by the plug 500, at the moment, the chamber I-101 is filled with the medium, and the adjusting screw 801 is adjusted (reverse rotation) to enable the plug 802 to be located at a proper position. When the piston shaft II-700 retracts under the action of an external force, the piston shaft II-700 drives the piston 900 on the piston shaft II-700 to move to the position of the chamber I-101, the one-way valve is in a closed state at the moment, the auxiliary flow channel 901 on the piston 900 is not communicated, so that the effective flow channel for a medium to flow from the chamber I-101 to the chamber II-102 is less, the flow rate is lower, the piston shaft II-700 retracts slowly until the piston 900 moves to the position of the spacer sleeve I-301, the piston shaft II-700 retracts in place, and the medium is located in the chamber II-102. Specifically, after the piston rod is pulled out, when the piston rod needs to retract back, the medium flows to the channel: as shown in fig. 2, chamber i-101 → left flow port → hollow flow passage on piston shaft i-600 → hollow flow passage on piston shaft ii-700 → right flow port → chamber ii-102.
When the piston shaft ii-700 is extended by an external force, the piston shaft ii-700 drives the piston 900 thereon to move toward the chamber ii-102, the medium presses the valve core 1001, the spring 1003 is compressed, the check valve 1000 is in an open state at this time, the auxiliary flow passage 901 on the piston 900 is communicated, more effective flow passages for the medium to flow from the chamber ii-102 to the chamber i-101 are provided, the medium with a higher flow rate is fast, the piston shaft ii-700 is extended fast, the required tension is small when extending, the purpose of fast opening is achieved, specifically, the piston rod is in a retraction state, when being pulled out, the medium flows into the passages in two ways: as shown in fig. 1, one path is: chamber II-102 → right flow opening → hollow flow passage on piston shaft II-700 → hollow flow passage on piston shaft I-600 → left flow opening → chamber I-101; the other path is as follows: chamber II-102 → one-way valve → Chamber I-101.
When the piston rod extends out (the piston 900 moves from the chamber I-101 to the chamber II-102), the medium flows from the chamber II-102 to the chamber I-101, the medium flows to the channel in two ways, the required pulling force is small, and the piston rod is easy to pull out to reach the working position; when the piston rod retracts (the piston 900 moves from the chamber II-102 to the chamber I-101), the medium flows from the chamber I-101 to the chamber II-102, and the medium flows to one path (a hollow flow channel in the middle of the piston rod) due to the fact that the action of the one-way valve is stopped, and the piston rod retracts slowly.
The novel fast-out slow-return hydraulic cylinder protected by the utility model has the advantages of simple structure, strong practicability, no external component, no oil leakage and no need of maintenance; can be applied to the check valve, let the check valve realize slowly closing function.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the scope of the invention, and any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention should be included in the scope of the present invention.
Claims (10)
1. The utility model provides a novel go out slowly and return hydraulic cylinder, includes cylinder (100), left end lid (400), right end lid (200) and the inside piston shaft that is equipped with the cavity runner, and cylinder (100), left end lid (400), right end lid (200) enclose jointly and enclose into the medium cavity who holds the medium, be equipped with medium entry (401) that are used for adding the medium to the medium intracavity on left end lid (400), be connected with plug (500) on medium entry (401), the piston shaft runs through cylinder (100) and both ends and stretches out left end lid (400), right end lid (200), its characterized in that respectively: the piston shaft includes piston shaft I (600) and piston shaft II (700), and piston shaft I (600) and piston shaft II (700) are connected through piston (900), piston (900) divide into cavity I (101) and cavity II (102) with the medium cavity, be equipped with the left through-flow mouth that is used for communicateing cavity I (101) and cavity runner on piston shaft I (600), be equipped with the right through-flow mouth that is used for communicateing cavity II (102) and cavity runner on piston shaft II (700), be equipped with intercommunication/cut to check valve (1000) that cavity I (101) and cavity II (102) switched on piston (900).
2. The new type of hydraulic cylinder as claimed in claim 1, wherein: an auxiliary flow passage (901) for communicating the chamber I (101) with the chamber II (102) is formed in the piston (900), and the one-way valve (1000) is installed on the auxiliary flow passage (901); the check valve (1000) comprises a valve core (1001), a valve seat (1002) and a spring (1003), wherein an assembly groove I for installing the valve seat (1002) and an assembly groove II for installing the spring (1003) are formed in the auxiliary flow channel (901), and the valve core (1001) is tightly installed in the valve seat (1002) through the spring (1003).
3. The new type of hydraulic cylinder as claimed in claim 2, wherein: the auxiliary flow channels are multiple, the auxiliary flow channels (901) are evenly distributed along the circumferential direction of the piston (900), and each auxiliary flow channel (901) is provided with a one-way valve (1000).
4. The new type of hydraulic cylinder as claimed in claim 3, wherein: the number of the auxiliary flow channels (901) is 2, and the 2 auxiliary flow channels (901) are symmetrically arranged.
5. The new type of hydraulic cylinder as claimed in claim 4, wherein: and a flow regulating mechanism (800) for regulating the conduction area of the left through-flow opening is arranged on the piston shaft I (600).
6. The new type of hydraulic cylinder as claimed in claim 5, wherein: flow adjusting mechanism (800) include adjusting screw (801), be connected with end cap (802) that are used for adjusting left through-flow mouth conduction area on adjusting screw (801), the end connection of end cap (802) has sealing washer I (803), be equipped with the pilot hole with adjusting screw (801) adaptation along the axial on piston axle I (600), pilot hole and cavity runner intercommunication.
7. The new type of hydraulic cylinder as claimed in claim 6, wherein: the left through-flow opening comprises a left through-flow opening I (601) arranged at the top of the piston shaft I (600) and a left through-flow opening II (602) arranged at the bottom of the piston shaft I (600), the cross section of the left through-flow opening I (601) along the length direction of the piston shaft is of an oval key groove type structure, and the cross section of the left through-flow opening II (602) along the length direction of the piston shaft is of a circular structure.
8. The new type of hydraulic cylinder as claimed in claim 7, wherein: the number of the left flow ports II (602) is 3.
9. The new type of hydraulic cylinder as claimed in claim 8, wherein: the right through-flow opening comprises a right through-flow opening I (701) arranged at the top of the piston shaft II (700) and a right through-flow opening II (702) arranged at the bottom of the piston shaft II (700), and the right through-flow opening I (701) and the right through-flow opening II (702) are symmetrically arranged and have consistent structures.
10. A new type of hydraulic cylinder with fast outlet and slow return as claimed in any one of claims 1 to 9, characterized by: the left end cover (400) inboard is equipped with spacer sleeve I (301), right end cover (200) inboard is equipped with spacer sleeve II (302).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120470511.5U CN214465244U (en) | 2021-03-04 | 2021-03-04 | Novel fast-out slow-return hydraulic cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120470511.5U CN214465244U (en) | 2021-03-04 | 2021-03-04 | Novel fast-out slow-return hydraulic cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214465244U true CN214465244U (en) | 2021-10-22 |
Family
ID=78152643
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120470511.5U Expired - Fee Related CN214465244U (en) | 2021-03-04 | 2021-03-04 | Novel fast-out slow-return hydraulic cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214465244U (en) |
-
2021
- 2021-03-04 CN CN202120470511.5U patent/CN214465244U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20211022 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |