CN209800399U - One-way acting safety self-locking oil cylinder - Google Patents
One-way acting safety self-locking oil cylinder Download PDFInfo
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- CN209800399U CN209800399U CN201821455120.0U CN201821455120U CN209800399U CN 209800399 U CN209800399 U CN 209800399U CN 201821455120 U CN201821455120 U CN 201821455120U CN 209800399 U CN209800399 U CN 209800399U
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Abstract
The utility model relates to a safety of one-way effect is from locking hydro-cylinder, including big hydro-cylinder and little hydro-cylinder, little hydro-cylinder arrange big hydro-cylinder in, the piston of big hydro-cylinder stretches out hydro-cylinder and is connected with aligning supporting seat (1), still including setting up ratchet (30) at the piston outer peripheral face, with this ratchet (30) assorted locking ratchet piece (28), the drive is locked ratchet piece (28) and is locked ratchet (30) or from the single action of withdrawing from the unblock from restoring to the throne locking hydro-cylinder in ratchet (30). Compared with the prior art, the utility model has the advantages of shear strength is big, the reliability is high, the jamming trouble is few.
Description
Technical Field
The utility model relates to a hydraulic power equipment technique especially relates to a safe self-locking hydro-cylinder of one-way effect.
Background
At present, due to the superior product characteristics of hydraulic cylinders, no body shadow is generated during the operation of the hydraulic cylinders in various industries, most functions are jacking and tensioning, a very large jacking force is generated during the operation of the hydraulic cylinders, but the characteristic of internal leakage of the hydraulic cylinders exists, the rod of the hydraulic cylinder cannot be kept in a stable stroke range for a long time after extending out, and the traditional method is to realize the internal leakage problem of the oil cylinder pipeline and a control valve block by adopting a hydraulic valve lock (a hydraulic control one-way valve) to perform one-way stop on the loop of the oil cylinder; however, as the hydraulic lock (hydraulic control one-way valve) closes the hydraulic circuit through the movement of the internal valve core, the internal leakage of the hydraulic lock (hydraulic control one-way valve) cannot be avoided; in addition, a certain gap also exists between the oil cylinder piston and the oil cylinder sleeve; hydraulic leakage is also unavoidable; the traditional oil cylinder cannot realize accurate position control during ejection or retraction; the mechanism locking mechanism adopted at present adopts a single-action self-resetting hydraulic cylinder to drive a locking tooth block to lock a piston rod, and ensures that the piston rod is in an absolutely stable locking state through the action of the self-resetting locking block after the oil cylinder is extended or recovered to be stopped.
Chinese patent application CN104100596A discloses a combined pawl self-locking hydraulic cylinder, relating to the technical field of hydraulic power equipment and solving the technical problems of poor locking reliability and low output force of the existing cylinder. The oil cylinder comprises a main cylinder barrel and an auxiliary cylinder barrel which are in butt joint left and right, and a main piston and an auxiliary piston which are respectively arranged in the main cylinder barrel and the auxiliary cylinder barrel; the inner cavities of the main cylinder barrel and the auxiliary cylinder barrel are separated from left to right by a left cylinder cover of the main cylinder barrel; the right end of the main piston extends to the outside of the main cylinder barrel, a ratchet bar is formed on the peripheral surface of the right part of the main piston, and a pawl matched with the ratchet bar is pivoted on the main cylinder barrel; the auxiliary piston is coaxial with the main piston and tightly props against the left end of the main piston. Although the oil cylinder provided by the invention can achieve the locking effect, the area of the pawl 7 which can be clamped by the main body is very small, and generally only about 30% of the area on the same circumference, so that the shearing resistance is limited, when the bearing is high, the structure is difficult to safely and effectively lock, and the structure is difficult to synchronize a plurality of pawls, and the clamping stagnation phenomenon often occurs in the locking and unlocking process.
Disclosure of Invention
The utility model aims at providing a safe self-locking oil cylinder of one-way effect that shear strength is big, the reliability is high, the jamming trouble is few in order to overcome the defect that above-mentioned prior art exists.
The purpose of the utility model can be realized through the following technical scheme: the safe self-locking oil cylinder with the one-way function comprises a large oil cylinder and a small oil cylinder, wherein the small oil cylinder is arranged in the large oil cylinder, a piston of the large oil cylinder extends out of the oil cylinder and is connected with a centering supporting seat, and the safe self-locking oil cylinder is characterized by further comprising a ratchet arranged on the outer peripheral surface of the piston, a locking ratchet block matched with the ratchet, and a single-action self-resetting locking oil cylinder for driving the locking ratchet block to lock the ratchet or withdraw from the ratchet for unlocking.
The inner sides of the locking ratchet blocks are arc-shaped, the locking ratchet blocks form a circular ring matched with the outer peripheral surface of the piston to lock the piston, a balance reset spring is connected between every two adjacent locking ratchet blocks, the locking ratchet blocks are kept on the same circumference in the locking and unlocking processes, even if each locking ratchet block horizontally moves outwards in the unlocking process, due to the fact that the self weight is inclined, the locking ratchet blocks can be reset in a balance mode through the balance reset spring, and the clamping stagnation phenomenon cannot be caused.
The two ends of each locking ratchet block are provided with blind holes, and the two ends of each balance reset spring are inserted into the corresponding blind holes of the adjacent locking ratchet blocks, so that the balance synchronization of the locking ratchet blocks is ensured.
The single-action self-resetting locking oil cylinder comprises a locking oil cylinder barrel and a self-resetting oil cylinder piston, wherein the locking oil cylinder barrel is provided with a base and a cylinder cover, one end of the self-resetting oil cylinder piston penetrates through the cylinder cover to be connected to a locking ratchet block, a resetting spring is arranged on the inner side of the cylinder cover, and after hydraulic oil enters the locking oil cylinder barrel, the self-resetting oil cylinder piston is pushed to move inwards, the locking ratchet block is meshed on a ratchet, and the resetting spring is compressed; when the locking ratchet block needs to be unlocked, the hydraulic oil in the cylinder barrel of the locking oil cylinder is output, and the reset spring pushes the self-reset oil cylinder piston to move outwards so as to drive the locking ratchet block to be disengaged. The external locking oil cylinder is convenient to maintain, install, disassemble and clean.
The self-reset oil cylinder piston is reset through but not limited to no reset spring;
The number of the locking ratchet blocks is four, the four locking ratchet blocks are connected with each other through a balance return spring (29) without limitation, and each locking ratchet block is connected with an external locking oil cylinder.
The large oil cylinder comprises a cylinder barrel, a base is arranged at the bottom of the cylinder barrel, a cylinder cover is arranged at the top of the cylinder barrel, a mechanical lock supporting seat is arranged above the cylinder cover, and the locking ratchet block is arranged on the inner side of the top of the mechanical lock supporting seat and is pressed tightly through a mechanical lock block pressing plate.
the cylinder barrel is provided with an oil cylinder jacking oil port and an oil cylinder contraction oil port, and high-pressure liquid is input into and output from the cylinder barrel.
The big cylinder still include big hydro-cylinder jar pole, piston rod, little hydro-cylinder include little hydro-cylinder piston and little hydro-cylinder piston rod, the cylinder in be equipped with little hydro-cylinder cap, little hydro-cylinder piston rod bottom connect little hydro-cylinder cap, little hydro-cylinder piston is connected at the top, big hydro-cylinder jar pole is connected to little hydro-cylinder piston top, little hydro-cylinder cap and cylinder bottom between form big cylinder rodless chamber, it has the pole chamber to form little hydro-cylinder between little hydro-cylinder cap and the little hydro-cylinder piston, little hydro-cylinder piston rod and big hydro-cylinder jar pole between form little cylinder rodless chamber, the vertical little hydro-cylinder rodless chamber inlet port in little hydro-cylinder piston rod center, the liquid that gets into big cylinder rodless intracavity gets into little cylinder rodless chamber through little hydro-cylinder rodless chamber inlet port, the piston rod on be equipped with little hydro-cylinder rodless chamber inlet. The oil cylinder structure is characterized in that a small oil cylinder is arranged in a large oil cylinder, an oil conveying channel is arranged in the middle of a piston, high-pressure oil is input into the large oil cylinder through an oil cylinder jacking oil port and enters the small oil cylinder through the oil conveying channel in the middle of the piston, meanwhile, thrust is applied to the large oil cylinder and the small oil cylinder, and under the condition that the pressure of the oil cylinder is unchanged, the jacking force of the oil cylinder can be increased by 60% under the same working pressure.
The ratchet is arranged on the peripheral side wall of the large oil cylinder rod.
The aligning support seat comprises an upper flat plate and a lower oil cylinder rod ball seat, the lower oil cylinder rod ball seat is arranged in a spherical groove in the top of the large oil cylinder rod and is pressed tightly through a pressing plate, and the pressing plate is fixedly connected with the top of the large oil cylinder rod through a screw.
Compared with the prior art, the utility model discloses following beneficial effect has:
1. The utility model discloses locking mechanical system is equipped with many parallel ratchets on the outer periphery of piston to set up the annular locking ratchet piece of the circle that corresponds, annular locking ratchet piece comprises the concatenation of the single locking ratchet piece of polylith, and single locking ratchet piece is by corresponding locking cylinder drive, impels the locking or withdraws from the unblock to the outside to the inboard, every locking ratchet piece inboard all be equipped with the pawl that many parallel ratchets correspond, when locking ratchet piece chucking piston, pawl on it inserts and forms the locking in the ratchet, because whole circumference area is locking area, has consequently greatly improved anti-shear capacity, for the shape of current multiple spot locking, locking area has improved 1/3 ~ 2/3, and anti-shear capacity has improved more than 30%, and reliability and security have improved greatly.
2. A plurality of locking ratchet piece are connected through balanced reset spring each other, and at the unblock in-process, certain locking ratchet piece is owing to self gravity, and the part that unlocks earlier comes out is to the whereabouts, also can kick-back under balanced reset spring's effort, keeps whole unblock in-process, and a plurality of locking ratchet piece keep the ring form, avoids the jamming phenomenon.
3. The locking oil cylinder corresponding to each locking ratchet block is an external oil cylinder, and the maintenance is convenient.
4. The utility model discloses whole hydro-cylinder arranges the structure in big hydro-cylinder for little hydro-cylinder, has reduced the holistic volume of hydro-cylinder greatly, has saved volume space and weight.
Drawings
Fig. 1 is a schematic structural view of the oil cylinder of the present invention;
FIG. 2 is a cross-sectional view C-C of FIG. 1;
FIG. 3 is an enlarged view of the J portion of FIG. 2;
FIG. 4 is a cross-sectional view taken along line D-D of FIG. 1;
The labels in the figure are:
The self-aligning support seat comprises a self-aligning support seat 1, a mechanical lock block pressing plate 2, a mechanical lock support seat 3, a cylinder barrel 4, a base 5, a base mounting bolt 6, a pressing plate 7, a locking cylinder mounting hole 8, a cylinder cover 9, a cylinder contraction oil port 10, a cylinder jacking oil port 11, a screw 12, a cylinder rod ball seat 13, a large cylinder rod 14, a bolt 15, a piston rod 16, a small cylinder rod cavity 17, a small cylinder cover 18, a large cylinder rodless cavity 19, a screw 20, a small cylinder rodless cavity 21, a small cylinder piston 22, a small cylinder piston rod 23, a small cylinder rodless cavity oil inlet 24, a small cylinder rod cavity oil inlet 25, a screw 26, a locking ratchet block 28, a balance reset spring 29, a ratchet 30, a bolt 31, a locking cylinder barrel 32, a reset spring 33 and a self-resetting cylinder piston 34.
Detailed Description
the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
As shown in figures 1-4, a safe self-locking oil cylinder with one-way effect comprises a large oil cylinder and a small oil cylinder, wherein the small oil cylinder is arranged in the large oil cylinder, a base 5 is arranged at the bottom and a cylinder cover 9 is arranged at the top of the large oil cylinder, a mechanical lock support seat 3 is arranged above the cylinder cover 9 and is connected through a bolt 15, and a locking ratchet block 28 is arranged on the inner side of the top of the mechanical lock support seat 3 and is pressed through a mechanical lock block pressing plate 2. The mechanical lock support seat 3 is further provided with a locking oil cylinder mounting hole 8, a locking oil cylinder is arranged in the locking oil cylinder mounting hole, the hydraulic oil cylinder is mounted on the mechanical lock support seat 3 through a screw 20, and an oil cylinder jacking oil port 11 and an oil cylinder contraction oil port 10 are arranged on the cylinder barrel 4. And a base mounting bolt 6 is also arranged on the base 5.
Set up little hydro-cylinder cap 18, piston rod 16, little hydro-cylinder piston 22 and little hydro-cylinder piston rod 23 in the cylinder 4, little hydro-cylinder piston rod 23 bottom connect little hydro-cylinder cap 18, little hydro-cylinder piston 22 is connected at the top, big hydro-cylinder piston rod 14 is connected to little hydro-cylinder piston 22 top, little hydro-cylinder cap 18 and cylinder 4 bottom between form big cylinder rodless chamber 19, it has pole chamber 17 to form little hydro-cylinder between little hydro-cylinder cap 18 and the little hydro-cylinder piston 22, little hydro-cylinder piston rod 23 and big hydro-cylinder piston rod 14 between form little cylinder rodless chamber 21, the vertical little hydro-cylinder rodless chamber inlet port 24 in little hydro-cylinder piston rod 23 center, the liquid that gets into big hydro-cylinder rodless chamber 19 gets into little hydro-cylinder rodless chamber 21 through little hydro-cylinder rodless chamber inlet port 24, piston rod 16 on be equipped with little hydro-cylinder rodless chamber. The small cylinder cover 18 is connected with the piston rod 16 through a screw 26.
The side wall of the periphery of the large oil cylinder rod 14 is provided with a ratchet 30, and the top of the large oil cylinder rod is provided with a self-aligning supporting seat 1.
And four locking ratchet blocks 28 matched with the ratchets 30, the inner sides of the locking ratchet blocks 28 are in a circular arc shape, and the four locking ratchet blocks 28 form a circular ring matched with the outer peripheral surface of the piston to lock the large cylinder rod 14.
be connected with balanced reset spring 29 between the adjacent locking ratchet piece 28, locking ratchet piece 28 both ends all be equipped with the blind hole, balanced reset spring 29 both ends insert adjacent locking ratchet piece 28 and correspond in the blind hole, guarantee each locking ratchet piece 28 balanced synchronous, all keep a plurality of locking ratchet pieces 28 on same circumference at locking and unblock in-process, even each locking ratchet piece 28 is at the outside horizontal migration in-process of unblock, because self weight slope, also can balance through balanced reset spring 29 and reset, can not cause the jamming phenomenon.
Each locking ratchet block 28 is connected with a single-action self-resetting locking oil cylinder, each single-action self-resetting locking oil cylinder comprises a locking oil cylinder barrel 32 and a self-resetting oil cylinder piston 34, each locking oil cylinder barrel 32 is provided with a base and a cylinder cover, one end of each self-resetting oil cylinder piston 34 penetrates through the cylinder cover to be connected to the locking ratchet block 28, a reset spring 33 is arranged on the inner side of the cylinder cover, and after hydraulic oil enters the locking oil cylinder barrel 32, the self-resetting oil cylinder piston 34 is pushed to move inwards, the locking ratchet blocks 28 are meshed on the ratchets 30, and the reset springs 33 are compressed; when unlocking is needed, hydraulic oil in the cylinder barrel 32 of the locking oil cylinder is output, and the return spring 33 pushes the self-reset oil cylinder piston 34 to move outwards, so that the locking ratchet block 28 is driven to be disengaged.
The aligning support seat 1 comprises an upper flat plate and a lower oil cylinder rod ball seat 13, wherein the lower oil cylinder rod ball seat 13 is arranged in a spherical groove in the top of the large oil cylinder rod 14 and is compressed through the pressing plate 7, and the pressing plate 7 is fixedly connected with the top of the large oil cylinder rod 14 through a screw 12.
When in use, the utility model is used for cleaning the inner wall of the tank,
Hydraulic oil enters a large cylinder rodless cavity 19 through an oil cylinder jacking oil port 11 to generate upward thrust acting on a piston rod 16, meanwhile, high-pressure hydraulic oil enters a small cylinder rodless cavity 21 from the large cylinder rodless cavity 19 through a small oil cylinder rodless cavity oil inlet hole 24 of a small oil cylinder piston rod 23 to generate downward thrust to be propped against a large cylinder body, the reaction force of the high-pressure hydraulic oil and the piston rod 16 jointly act on a large oil cylinder rod 14 with a chamfer locking ratchet to realize forward movement, oil is fed into a rodless cavity of a single-action self-resetting locking oil cylinder barrel 32 to push a self-resetting oil cylinder piston 34 to move forward to compress a resetting spring 33, the front part of the high-pressure hydraulic oil cylinder rod pushes a locking ratchet block 28 to move inwards to be engaged on the ratchet 30 to be locked through the action of the oil cylinder and a locking block bolt 31, and the stroke and the; during unlocking, hydraulic oil in the single-action self-resetting locking oil cylinder 32 is output, the self-resetting oil cylinder piston 34 moves backwards and outwards under the action of the reset spring 33, the locking ratchet block 28 is driven to move towards the periphery, the locking ratchet block 28 and the piston ratchet 30 in the meshed state are loosened, and free expansion and contraction of the large oil cylinder rod 14 are achieved.
Claims (10)
1. The safe self-locking oil cylinder with the one-way function comprises a large oil cylinder and a small oil cylinder, wherein the small oil cylinder is arranged in the large oil cylinder, a piston of the large oil cylinder extends out of the oil cylinder and is connected with a self-aligning supporting seat (1), and the safe self-locking oil cylinder is characterized by further comprising a ratchet (30) arranged on the outer peripheral surface of the piston, a locking ratchet block (28) matched with the ratchet (30), and a single-action self-resetting locking oil cylinder for driving the locking ratchet block (28) to lock the ratchet (30) or quit from the ratchet (30) for unlocking.
2. the cylinder of claim 1, wherein the locking ratchet blocks (28) are arc-shaped, a plurality of locking ratchet blocks (28) form a ring matched with the outer peripheral surface of the piston to lock the piston, a balance return spring (29) is connected between adjacent locking ratchet blocks (28), and the locking ratchet blocks (28) are kept on the same circumference in the locking and unlocking processes.
3. The cylinder of claim 2, wherein blind holes are formed at both ends of the locking ratchet block (28), and both ends of the balance return spring (29) are inserted into corresponding blind holes of the adjacent locking ratchet block (28).
4. The single-acting safety self-locking cylinder according to claim 1, wherein the single-acting self-resetting locking cylinder comprises a locking cylinder barrel (32) and a self-resetting cylinder piston (34), the locking cylinder barrel (32) is provided with a base and a cylinder cover, one end of the self-resetting cylinder piston (34) penetrates through the cylinder cover to be connected to the locking ratchet block (28), a reset spring (33) is arranged on the inner side of the cylinder cover, and after hydraulic oil enters the locking cylinder barrel (32), the self-resetting cylinder piston (34) is pushed to move inwards to engage the locking ratchet block (28) on the ratchet (30) and compress the reset spring (33); when the unlocking is needed, hydraulic oil in a cylinder barrel (32) of the locking oil cylinder is output, and a return spring (33) pushes a self-reset oil cylinder piston (34) to move outwards to drive a locking ratchet block (28) to be disengaged.
5. A single acting safety self-locking cylinder as claimed in claim 4, wherein the self-resetting cylinder piston (34) is reset by, but not limited to, no return spring;
The four locking ratchet blocks (28) are connected with each other through a balance return spring (29), but not limited to, and each locking ratchet block (28) is connected with an external locking oil cylinder.
6. The safety self-locking oil cylinder with one-way action as claimed in claim 1, characterized in that the large oil cylinder comprises a cylinder barrel (4), a base (5) is arranged at the bottom of the cylinder barrel (4), a cylinder cover (9) is arranged at the top of the cylinder barrel, a mechanical lock support seat (3) is arranged above the cylinder cover (9), and the locking ratchet block (28) is arranged on the inner side of the top of the mechanical lock support seat (3) and is pressed tightly through a mechanical lock block pressing plate (2).
7. The one-way acting safety self-locking oil cylinder is characterized in that an oil cylinder jacking oil port (11) and an oil cylinder contraction oil port (10) are formed in the cylinder barrel (4).
8. the one-way-action safe self-locking oil cylinder is characterized by further comprising a large oil cylinder rod (14) and a piston rod (16), wherein the small oil cylinder comprises a small oil cylinder piston (22) and a small oil cylinder piston rod (23), a small oil cylinder cover (18) is arranged in the cylinder barrel (4), the bottom of the small oil cylinder piston rod (23) is connected with the small oil cylinder cover (18), the top of the small oil cylinder piston rod is connected with the small oil cylinder piston (22), the large oil cylinder rod (14) is connected above the small oil cylinder piston (22), a large cylinder rodless cavity (19) is formed between the small oil cylinder cover (18) and the bottom of the cylinder barrel (4), a small oil cylinder rod cavity (17) is formed between the small oil cylinder cover (18) and the small oil cylinder piston (22), and a small cylinder rodless cavity (21) is formed between the small oil cylinder piston rod (23) and the large oil cylinder rod (14), the liquid entering the large cylinder rodless cavity (19) enters the small cylinder rodless cavity (21) through the small cylinder rodless cavity oil inlet hole (24), and the piston rod (16) is provided with the small cylinder rod cavity oil inlet hole (25).
9. A safety self-locking cylinder with one-way action according to claim 8, characterized in that the ratchet teeth (30) are provided on the peripheral side wall of the large cylinder rod (14).
10. the cylinder of claim 8, wherein the center-adjusting support base (1) comprises an upper flat plate and a lower cylinder rod ball seat (13), the lower cylinder rod ball seat (13) is arranged in a spherical groove at the top of the large cylinder rod (14) and is pressed by the pressing plate (7), and the pressing plate (7) is fixedly connected with the top of the large cylinder rod (14) through a screw (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821455120.0U CN209800399U (en) | 2018-09-06 | 2018-09-06 | One-way acting safety self-locking oil cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821455120.0U CN209800399U (en) | 2018-09-06 | 2018-09-06 | One-way acting safety self-locking oil cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209800399U true CN209800399U (en) | 2019-12-17 |
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ID=68815939
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821455120.0U Active CN209800399U (en) | 2018-09-06 | 2018-09-06 | One-way acting safety self-locking oil cylinder |
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| CN (1) | CN209800399U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108895058A (en) * | 2018-09-06 | 2018-11-27 | 森筹环境科技(上海)有限公司 | A kind of safe self-locking stand oil cylinder of single effect |
-
2018
- 2018-09-06 CN CN201821455120.0U patent/CN209800399U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108895058A (en) * | 2018-09-06 | 2018-11-27 | 森筹环境科技(上海)有限公司 | A kind of safe self-locking stand oil cylinder of single effect |
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| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210126 Address after: 223900 Donghu Industrial Park, Caomiao Township, Sihong County, Suqian City, Jiangsu Province Patentee after: Chuangyin equipment manufacturing (Suqian) Co., Ltd Address before: Room 7153, building 2, 161 Changjiang street, Changjiang Farm, Chongming District, Shanghai 202178 (Shanghai Changjiang Economic Park) Patentee before: SENCHOU ENVIRONMENT TECHNOLOGY (SHANGHAI) Co.,Ltd. |
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| TR01 | Transfer of patent right |