CN204186693U - A kind of auto lock oil cylinder - Google Patents
A kind of auto lock oil cylinder Download PDFInfo
- Publication number
- CN204186693U CN204186693U CN201420639170.XU CN201420639170U CN204186693U CN 204186693 U CN204186693 U CN 204186693U CN 201420639170 U CN201420639170 U CN 201420639170U CN 204186693 U CN204186693 U CN 204186693U
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- China
- Prior art keywords
- oil cylinder
- locking
- piston
- oil
- output shaft
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Abstract
The utility model belongs to technical field of hydraulic pressure, and specifically disclose a kind of auto lock oil cylinder, it comprises oil cylinder body, locking device, drive unit and setting sleeve, and oil cylinder body is built-in with multi-stage oil cylinder.Setting sleeve is fixed on the top of oil cylinder body, and the output shaft that locking device is assemblied in oil cylinder body conciliates locking output shaft for locking.Locking device is positioned at above setting sleeve, and during oil cylinder locking, locking device is fitted in setting sleeve top, and during the locking of oil cylinder solution, locking device is away from the top of setting sleeve.Drive unit is fixed on setting sleeve by adpting flange, carries out locking or separating locking operation for driving locking device.Oil cylinder of the present utility model can be locked oil cylinder after reaching target stroke, keep stroke state for a long time, structure of the present utility model is simple, parts are few, cost is low, failure rate is low, be convenient to telecontrol, and in addition, multi-stage oil cylinder design ensure that oil cylinder thrust output is large.
Description
Technical field
The present invention relates to a kind of hydraulic pressure installation, particularly relate to and a kind ofly can keep the auto lock oil cylinder of its stroke by auto lock piston rod, belong to technical field of hydraulic pressure.
Background technique
Hydraulic jack is, in hydraulic pressure installation, hydraulic energy is converted to mechanical energy, realizes the actuator of straight reciprocating motion.In equipment application, party often requires that oil lacks and reliably locks in any output services position, and long-time fixed position, and existing locking mode ensures with various descaling locking circuit.The locking mode of descaling locking circuit also exists leakage unavoidably, can not ensure the reliability of locking like this.This addresses this problem, and the design a mechanism hydraulic cylinder locking device of formula of the present invention by the piston rod lock-bit of hydraulic jack, can stop on this position.
Summary of the invention
The object of the invention is for prior art Problems existing, providing a kind of can keep the auto lock oil cylinder of its stroke by auto lock piston rod.
Technological scheme of the present invention is to provide a kind of auto lock oil cylinder, and its designing points is, comprising:
Oil cylinder body 1, its built-in first oil cylinder 10, described first oil cylinder comprises the first cylinder barrel 101, first piston bar 102, first piston 103, output shaft 107, first top end cover 104 and the first bottom cover 106, described first top end cover 104 is fixed on the top of the first cylinder barrel 101, and the first bottom cover 106 is fixed on the bottom of the first cylinder barrel 101; One end of described output shaft 107 is stretched in the first cylinder barrel 101 by the first top end cover 104 and is also connected with the first top end cover 104 slipper seal; One end of described first piston bar 102 and first piston 103 are fixed on and are placed in the first cylinder barrel 101, and one end that the other end and the output shaft 107 of first piston bar 102 stretch in the first cylinder barrel 101 is connected;
Locking device 2, it is connected with the other end of output shaft 107 for locking or separates locking output shaft 107;
Drive unit 3, it is fixed on the top of oil cylinder body 1, and drive unit 3 is connected with locking device 2 for driving locking device 2 to carry out locking or separating locking operation.
Setting sleeve 4, it is sleeved on output shaft 107 and also fixes with the first top end cover 104.
After hydraulic jack of the present invention reaches target stroke, oil cylinder locks by locking device, keeps stroke state for a long time.The present invention also has the following technological scheme improved further.
Further, described oil cylinder body 1 also comprises at least one second oil cylinder 20, described second oil cylinder 20 comprises the second cylinder barrel 201, second piston rod 202, second piston 203 and the second top end cover 204, second top end cover 204 is fixed on the bottom of the first cylinder barrel 101, and the second cylinder barrel 201 is fixed through the second top end cover 204 and the first cylinder barrel 101; Described second piston 203 is fixed on one end of the second piston rod 202 and is placed in the second cylinder barrel 201, the other end of the second piston rod 202 is connected with first piston bar 102 through the second top end cover 204, second piston rod 202 is connected with the second top end cover 204 slipper seal, and the first bottom cover 106 is fixed on the bottom of the second cylinder barrel 201.
Further, described first piston bar 102 and the second piston rod 202 one-body molded, be provided with the first oil circuit of UNICOM's first piston 103 upper oil chamber and the second piston 203 upper oil chamber in described first piston bar 102 and the second piston rod 202, the first hydraulic fluid port of the first oil circuit is arranged in the second top end cover 204; Be provided with the second oil circuit of UNICOM's first piston 103 bottom oil pocket and the second piston 203 bottom oil pocket in described first piston bar 102 and the second piston rod 202, the second hydraulic fluid port of the second oil circuit is arranged in the second top end cover 204.
Further, the outer side surface of the end be positioned at outside the first cylinder barrel 101 of described output shaft 107 is provided with locking outside thread 23, and the locking length of outside thread 23 coordinates with the stroke of oil cylinder.
Further, described locking device 2 comprises the driving wheel 21 and follower 22 that are connected, the middle part of follower 22 is provided with through hole, is provided with and the locking internal thread 24 of locking outside thread 23 and matching inside through hole, and follower 22 to be sleeved on output shaft 107 and to be fitted in the upper-end surface of setting sleeve 4.
Further, the side of described driving wheel 21 is arranged on groove and follower 22 side and groove is set, in the groove of described driving wheel 21 and the groove of follower 22, drivign belt is installed.。
Further, the outer side surface of described driving wheel 21 and follower 22 is respectively equipped with gear, driving wheel 21 and follower 22 are by described meshed transmission gear.
Further, described drive unit 3 comprises oil hydraulic motor or drive motor, and the output shaft of described oil hydraulic motor or drive motor is coaxially connected with driving wheel 21.
Further, the described length of driving wheel 21 and the stroke of oil cylinder adapt.
Further, described drive unit 3 also comprises oil hydraulic motor or drive motor, speed reducer, and the output shaft of described oil hydraulic motor or drive motor is connected with driving wheel 21 through speed reducer.
After hydraulic jack of the present invention reaches target stroke, locking operation is carried out to oil cylinder.The mode of locking operation is that drive unit drives driving wheel to rotate, and driving wheel drives follower rotary motion, and follower moves to setting sleeve direction, and be fitted in the upper end of setting sleeve, namely lock oil cylinder, do not need to supply hydraulic oil, oil cylinder also can keep stroke state for a long time.Before reverse direction actuation oil cylinder, first carry out solution locking operation to oil cylinder, separating locking mode of operation is that device drives driving wheel counterrotating, driving wheel drives follower counter rotational movement, follower to away from the motion of setting sleeve direction, and away from the upper end of setting sleeve, namely carries out to oil cylinder understandings and locks.
Beneficial effect
Locking cylinder, keep stroke state, by being arranged on the locking outside thread be positioned on this external output shaft of oil cylinder, the locking internal thread matched with locking outside thread being positioned at follower middle through-hole and the setting sleeve being fixed on oil cylinder top, follower is assemblied on output shaft, rotary drive is taken turns, make it shift to or move apart setting sleeve, realizing the locking operation to oil cylinder or solution locking operation.
The structure of locking device is simple, and parts are few, and cost is low, failure rate is low.
Cylinder thrust is large, and the built-in multi-stage oil cylinder series connection of oil cylinder body, it is large that identical input pressure realizes oil cylinder thrust output.
Accompanying drawing explanation
Fig. 1 cross-sectional schematic of the present invention.
In figure, 1-oil cylinder body, 10-first oil cylinder, 101-first cylinder barrel, 102-first piston bar, 103-first piston, 104-first top end cover, 106-first bottom cover, 107-output shaft, 2-locking device, 20-second oil cylinder, 21-driving wheel, 22-follower, 201-second cylinder barrel, 202-second piston rod, 203-second piston, 204-second top end cover, 23-locks outside thread, 24-locks internal thread, 3-drive unit, 4-setting sleeve.
Embodiment
In order to illustrate technological scheme of the present invention and technical purpose, below in conjunction with the drawings and the specific embodiments, the present invention is described further.
As shown in Figure 1, a kind of auto lock oil cylinder, comprises oil cylinder body 1, locking device 2, drive unit 3 and setting sleeve 4.Setting sleeve 4 adopts and is bolted to the top of oil cylinder body 1, for locking or separate locking output shaft 107 on the output shaft 107 that locking device 2 is assemblied in oil cylinder body 1.Locking device 2 is positioned at above setting sleeve 4, and during oil cylinder locking, locking device 2 is fitted in setting sleeve 4 top; During the locking of oil cylinder solution, locking device 2 is away from the top of setting sleeve 4.Drive unit 3 is fixed on setting sleeve by adpting flange, carries out locking or separating locking operation for driving locking device 2.Oil cylinder body 1 is built-in with first oil cylinder 10 and series connection at least one second oil cylinder 20, preferably second oil cylinder 20, also can two or more second oil cylinder 20.
Wherein, described first oil cylinder comprises the first cylinder barrel 101, first piston bar 102, first piston 103, output shaft 107, first top end cover 104 and the first bottom cover 106.Described first top end cover 104 is fixed on the top of the first cylinder barrel 101.One end of described output shaft 107 is stretched in the first cylinder barrel 101 by the first top end cover 104 and is also connected with the first top end cover 104 slipper seal.One end of described first piston bar 102 and first piston 103 are fixed on and are placed in the first cylinder barrel 101, and the other end and output shaft 107 one end stretched in the first cylinder barrel 101 of first piston bar 102 adopts threaded coaxial to be connected; Wherein, output shaft 107 stretches into one end in the first cylinder barrel 101 at the interior threaded hole being provided with common shaft axis, and the outside of the other end of first piston bar 102 is provided with the outside thread matched with above-mentioned interior threaded hole.The outer side surface of the end be positioned at outside the first cylinder barrel 101 of output shaft 107 is provided with locking outside thread 23, and the locking length of outside thread 23 coordinates with the stroke of oil cylinder.Setting sleeve 4 is sleeved on output shaft 107 and also adopts bolt to fix with the first top end cover 104.Setting sleeve 4 side is provided with multiple lug with through hole for being fixedly connected with flange.
Wherein, described second oil cylinder 20 comprises the second cylinder barrel 201, second piston rod 202, second piston 203 and the second top end cover 204.Second top end cover 204 adopts the bottom being bolted to the first cylinder barrel 101, second cylinder barrel 201 is fixed through the second top end cover 204 and the first cylinder barrel 101, preferably, screw-thread fit is adopted to fix between the second cylinder barrel 201 and the second top end cover 204, wherein the bump side, one end of the second top end cover 204 is provided with outside thread, and second cylinder barrel 201 one end inner side surface is provided with the internal thread matched with aforementioned outside thread.Described second piston 203 is fixed on one end of the second piston rod 202 and is placed in the second cylinder barrel 201, the other end of the second piston rod 202 is coaxially connected with first piston bar 102 through the second top end cover 204, second piston rod 202 is connected with the second top end cover 204 slipper seal, and the first bottom cover 106 is fixed on the bottom of the second cylinder barrel 201.
Further, described first piston bar 102 and the one-body molded formation piston rod of the second piston rod 202.Be provided with the first oil circuit of UNICOM's first piston 103 upper oil chamber and the second piston 203 upper oil chamber in described first piston bar 102 and the second piston rod 202, the first hydraulic fluid port of the first oil circuit is arranged in the second top end cover 204; Be provided with the second oil circuit of UNICOM's first piston 103 bottom oil pocket and the second piston 203 bottom oil pocket in described first piston bar 102 and the second piston rod 202, the second hydraulic fluid port of the second oil circuit is arranged in the second top end cover 204.
Wherein, described locking device 2 comprises the driving wheel 21 and follower 22 that are connected, the middle part of follower 22 is provided with through hole, is provided with and the locking internal thread 24 of locking outside thread 23 and matching inside through hole, and follower 22 to be sleeved on output shaft 107 and to be fitted in the upper-end surface of setting sleeve 4.Further, the outer side surface that the kind of drive of driving wheel 21 and follower 22 is preferably driving wheel 21 and follower 22 is respectively equipped with gear, and driving wheel 21 and follower 22 are by described meshed transmission gear.The kind of drive of driving wheel 21 and follower 22 also can be driving wheel 21 outer side surface is arranged on groove and follower 22 outer side surface to arrange groove, installs drivign belt in the groove of driving wheel 21 and the groove of follower 22.Preferably, the length of driving wheel 21 and the stroke of oil cylinder adapt.
Wherein, drive unit 3 is adopted by adpting flange and is bolted on setting sleeve 4, is positioned at the top of oil cylinder body 1.Drive unit 3 is oil hydraulic motor, and the output shaft of described oil hydraulic motor is coaxially connected with driving wheel 21.Be provided with flange first through hole that setting sleeve 4 can pass in the middle part of one end of adpting flange, between flange first through hole and flange periphery, be provided with first fastening through-hole for matching with the lug through hole on setting sleeve 4 of multiple circle distribution; Be provided with flange second through hole that drive unit 3 output shaft can pass in the middle part of the other end, between flange second through hole and flange periphery, be provided with second fastening through-hole for fixed drive device 3 of multiple circle distribution.Adpting flange is sleeved on setting sleeve 4, and the through hole on the lug on the first fastening through-hole and setting sleeve 4 side adopts bolt to fix, and oil hydraulic motor and the second fastening through-hole adopt bolt to fix, and the output shaft of oil hydraulic motor is coaxially connected with driving wheel.Drive unit 3 also can be drive motor, and the output shaft of drive motor is coaxially connected with driving wheel 21.Further, drive unit 3 also comprises speed reducer, and the output shaft of described oil hydraulic motor or drive motor is connected with driving wheel 21 through speed reducer.
After hydraulic jack of the present invention reaches target stroke, locking operation is carried out to oil cylinder.The mode of locking operation is the oil-feed direction of hydraulic control motor, fluid motor-driven driving wheel rotates, driving wheel drives follower rotary motion, follower moves to setting sleeve direction, and be fitted in the upper end of setting sleeve, namely lock oil cylinder, do not need to supply hydraulic oil, oil cylinder also can keep stroke state for a long time.Before reverse direction actuation oil cylinder, first solution locking operation is carried out to oil cylinder, separate the oil-feed direction that locking mode of operation is hydraulic control motor, the counterrotating of fluid motor-driven driving wheel, driving wheel drives follower counter rotational movement, follower to away from the motion of setting sleeve direction, and away from the upper end of setting sleeve, namely carries out to oil cylinder understandings and locks.
Compared to the prior art, the present invention has following progressive:
1) locking cylinder, keep stroke state, by being arranged on the locking outside thread be positioned on this external output shaft of oil cylinder, the locking internal thread matched with locking outside thread being positioned at follower middle through-hole and the setting sleeve being fixed on oil cylinder top, follower is assemblied on output shaft, rotary drive is taken turns, make it shift to or move apart setting sleeve, realizing the locking operation to oil cylinder or solution locking operation.
2) structure of locking device is simple, and parts are few, and cost is low, failure rate is low.
3) cylinder thrust is large, the built-in multi-stage oil cylinder of oil cylinder body, and identical input pressure realizes oil cylinder thrust output to be increased.
More than show and describe basic principle of the present invention, major character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and specification just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and application claims protection domain is defined by appending claims, specification and equivalent thereof.
Claims (10)
1. an auto lock oil cylinder, is characterized in that, comprising:
Oil cylinder body (1), its built-in first oil cylinder (10), described first oil cylinder comprises the first cylinder barrel (101), first piston bar (102), first piston (103), output shaft (107), the first top end cover (104) and the first bottom cover (106), described first top end cover (104) is fixed on the top of the first cylinder barrel (101), and the first bottom cover (106) is fixed on the bottom of the first cylinder barrel (101); One end of described output shaft (107) is stretched in the first cylinder barrel (101) by the first top end cover (104) and is also connected with the first top end cover (104) slipper seal; One end of described first piston bar (102) and first piston (103) are fixed on and are placed in the first cylinder barrel (101), and one end that the other end and the output shaft (107) of first piston bar (102) stretch in the first cylinder barrel (101) is connected;
Locking device (2), it is connected with the other end of output shaft (107) for locking or separates locking output shaft (107);
Drive unit (3), it is fixed on the top of oil cylinder body (1), and drive unit (3) is connected for driving locking device (2) to carry out locking or separating locking operation with locking device (2);
Setting sleeve (4), it is upper and fixing with the first top end cover (104) that it is sleeved on output shaft (107).
2. a kind of auto lock oil cylinder according to claim 1, it is characterized in that: described oil cylinder body (1) also comprises at least one second oil cylinder (20), described second oil cylinder (20) comprises the second cylinder barrel (201), the second piston rod (202), the second piston (203) and the second top end cover (204), second top end cover (204) is fixed on the bottom of the first cylinder barrel (101), and the second cylinder barrel (201) is fixed through the second top end cover (204) and the first cylinder barrel (101); Described second piston (203) is fixed on one end of the second piston rod (202) and is placed in the second cylinder barrel (201), the other end of the second piston rod (202) is connected with first piston bar (102) through the second top end cover (204), second piston rod (202) is connected with the second top end cover (204) slipper seal, and the first bottom cover (106) is fixed on the bottom of the second cylinder barrel (201).
3. a kind of auto lock oil cylinder according to claim 2, it is characterized in that: described first piston bar (102) and the second piston rod (202) one-body molded, be provided with the first oil circuit of UNICOM's first piston (103) upper oil chamber and the second piston (203) upper oil chamber in described first piston bar (102) and the second piston rod (202), the first hydraulic fluid port of the first oil circuit is arranged in the second top end cover (204); Be provided with the second oil circuit of UNICOM's first piston (103) bottom oil pocket and the second piston (203) bottom oil pocket in described first piston bar (102) and the second piston rod (202), the second hydraulic fluid port of the second oil circuit is arranged in the second top end cover (204).
4. a kind of auto lock oil cylinder according to claim 1, it is characterized in that: the outer side surface being positioned at the first cylinder barrel (101) end outward of described output shaft (107) is provided with locking outside thread (23), and the length of locking outside thread (23) coordinates with the stroke of oil cylinder.
5. a kind of auto lock oil cylinder according to claim 4, it is characterized in that: described locking device (2) comprises the driving wheel (21) and follower (22) that are connected, the middle part of follower (22) is provided with through hole, be provided with inside through hole and the locking internal thread (24) of locking outside thread (23) and matching, follower (22) is sleeved on output shaft (107) and goes up and be fitted in the upper-end surface of setting sleeve (4).
6. a kind of auto lock oil cylinder according to claim 5, it is characterized in that: the side of described driving wheel (21) is arranged on groove, follower (22) side and groove is set, in the groove of described driving wheel (21) and the groove of follower (22), drivign belt is installed.
7. a kind of auto lock oil cylinder according to claim 5, is characterized in that: the outer side surface of described driving wheel (21) and follower (22) is respectively equipped with gear, driving wheel (21) and follower (22) are by described meshed transmission gear.
8. a kind of auto lock oil cylinder according to claim 7, is characterized in that: described drive unit (3) comprises oil hydraulic motor or drive motor, the output shaft of described oil hydraulic motor or drive motor is coaxially connected with driving wheel (21).
9. a kind of auto lock oil cylinder according to claim 5, is characterized in that: the length of described driving wheel (21) and the stroke of oil cylinder adapt.
10. a kind of auto lock oil cylinder according to claim 7, is characterized in that: described drive unit (3) also comprises oil hydraulic motor or drive motor, speed reducer, the output shaft of described oil hydraulic motor or drive motor is connected with driving wheel (21) through speed reducer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420639170.XU CN204186693U (en) | 2014-10-31 | 2014-10-31 | A kind of auto lock oil cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420639170.XU CN204186693U (en) | 2014-10-31 | 2014-10-31 | A kind of auto lock oil cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204186693U true CN204186693U (en) | 2015-03-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420639170.XU Expired - Fee Related CN204186693U (en) | 2014-10-31 | 2014-10-31 | A kind of auto lock oil cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204186693U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104358744A (en) * | 2014-10-31 | 2015-02-18 | 常州市腾田液压机械有限公司 | Automatic locking cylinder |
| CN111264133A (en) * | 2020-03-01 | 2020-06-12 | 宁波奔野重工股份有限公司 | Adjustable integrated distance adjusting device of double-chain ditcher |
-
2014
- 2014-10-31 CN CN201420639170.XU patent/CN204186693U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104358744A (en) * | 2014-10-31 | 2015-02-18 | 常州市腾田液压机械有限公司 | Automatic locking cylinder |
| CN111264133A (en) * | 2020-03-01 | 2020-06-12 | 宁波奔野重工股份有限公司 | Adjustable integrated distance adjusting device of double-chain ditcher |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150304 Termination date: 20151031 |
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| EXPY | Termination of patent right or utility model |