CN215109818U - Self-locking hydraulic oil cylinder - Google Patents
Self-locking hydraulic oil cylinder Download PDFInfo
- Publication number
- CN215109818U CN215109818U CN202121745703.9U CN202121745703U CN215109818U CN 215109818 U CN215109818 U CN 215109818U CN 202121745703 U CN202121745703 U CN 202121745703U CN 215109818 U CN215109818 U CN 215109818U
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- cylinder body
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- piston rod
- piston
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- 239000010720 hydraulic oil Substances 0.000 title claims description 20
- 238000007789 sealing Methods 0.000 claims abstract description 6
- 239000003921 oil Substances 0.000 claims description 5
- 239000007787 solid Substances 0.000 abstract description 5
- 230000000694 effects Effects 0.000 description 6
- 238000004140 cleaning Methods 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
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Abstract
The utility model discloses an auto-lock hydraulic cylinder, including cylinder body, movable rod and spacing subassembly, the outside one end of cylinder body is provided with into oil pipe, and the inside of cylinder body is provided with the piston, and the one end of piston is fixed with the piston rod simultaneously, the inner wall one end of cylinder body is fixed with the sealing washer, the movable rod runs through the setting around solid fixed ring, first spring has been cup jointed on the surface of movable rod, and the both ends of first spring are connected with solid fixed ring's outer wall and fixed block respectively for carry out spacing locking to the piston rod spacing subassembly sets up the other end at the cylinder body. This auto-lock hydraulic cylinder is provided with gag lever post and second spring, under the spring action through the second spring for can drive the gag lever post and slide down, so that make the bottom card of gag lever post go into the spacing hole on piston rod surface, thereby carry out spacing locking to the piston rod, simple structure has solved current hydraulic cylinder auto-lock structure comparatively complicacy, makes the problem that the gag lever post warp or breaks easily.
Description
Technical Field
The utility model relates to a hydraulic cylinder correlation technique field specifically is a self-locking hydraulic cylinder.
Background
The hydraulic cylinder is a hydraulic actuator which converts hydraulic energy into mechanical energy and performs linear reciprocating motion, and the hydraulic cylinder can be used singly or in combination of two or more hydraulic cylinders or other mechanisms. To accomplish a particular function. The hydraulic cylinder has simple structure and reliable work, is widely applied to a hydraulic system of a machine tool, the existing hydraulic cylinder is generally provided with a self-locking device for avoiding the phenomenon that a piston rod is loosened when in use, and through mass search, the hydraulic cylinder capable of self-locking in the prior art is found to be typical as CN209671320U, the hydraulic cylinder self-locking device comprises a hydraulic cylinder, one end of the hydraulic cylinder is welded and communicated with a sleeve, a push-pull rod is sleeved in the other end of the hydraulic cylinder, a piston is connected to one end of the push-pull rod embedded in the hydraulic cylinder, a piston rod is connected to the piston, the piston rod is slidably sleeved in the hydraulic cylinder and the sleeve, the upper end and the lower end of the piston rod are both provided with tooth grooves, the inner walls of the upper end and the lower end of the sleeve are both connected with a micro hydraulic cylinder and a bracket, and the output shafts of the two miniature hydraulic cylinders are all in pin connection with limiting rods, and the middle ends of the two limiting rods are respectively in pin connection with the free ends of the two brackets. According to the scheme, the tooth grooves corresponding to the telescopic lengths are formed in the piston rod, the support pin shaft is connected with the limiting rod in the sleeve, the micro hydraulic cylinder is used for driving the limiting rod to deflect at a certain angle, the barb on the limiting rod can be clamped and connected or separated from the tooth grooves, the piston rod is conveniently limited and fixed at any length, and the self-locking purpose is achieved.
In conclusion, the existing hydraulic oil cylinder is complex in self-locking structure, the piston rod is fixed by the mode that the micro hydraulic cylinder is arranged on the outer side to drive the limiting rod to rotate to abut against the piston rod, but the structure is complex, and the pressure born by the hydraulic oil cylinder in use is large, so that the limiting rod is easy to deform or break by the mode, the stability after self-locking is influenced, the surface of the piston rod is inconvenient to clean, and the sealing effect between the piston rod and the cylinder body is easy to influence due to impurities attached to the surface of the piston rod.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a self-locking hydraulic oil cylinder to the current hydraulic oil cylinder structure that proposes among the solution above-mentioned background is complicated, and stability after the auto-lock is general, and the problem of clearing up is carried out on the surface of piston rod not convenient for.
In order to achieve the above object, the utility model provides a following technical scheme: a self-locking hydraulic oil cylinder comprises a cylinder body, a movable rod and a limiting component,
an oil inlet pipe is arranged at one end of the outer side of the cylinder body, a piston is arranged in the cylinder body, a piston rod is fixed at one end of the piston, a sealing ring is fixed at one end of the inner wall of the cylinder body, and a fixing ring is fixed at the other end of the outer side of the cylinder body;
the movable rod penetrates through the periphery of the fixed ring, a fixed block is fixed at one end of the outer side of the movable rod, a first spring is sleeved on the surface of the movable rod, and two ends of the first spring are respectively connected with the outer wall of the fixed ring and the fixed block;
the limiting assembly used for limiting and locking the piston rod is arranged at the other end of the cylinder body.
Preferably, spacing subassembly includes gag lever post, pull ring, connecting block, second spring and spacing hole, the gag lever post runs through the other end that sets up at the cylinder body, and the outside one end of gag lever post is fixed with the pull ring, the fixed surface of gag lever post has the connecting block, and the surface of gag lever post has cup jointed the second spring, and the both ends of second spring are connected with the one end inner wall of connecting block and cylinder body respectively simultaneously.
Through adopting above-mentioned technical scheme, can carry out spacingly to the piston rod under mutually supporting of gag lever post and second spring, improve the stability in the use.
Preferably, slide rails are arranged at two ends of the inner wall of the cylinder body, and the slide rails are in sliding connection with the piston.
Through adopting above-mentioned technical scheme, can avoid taking place to rotate and lead to inconveniently carrying out the auto-lock because of piston and piston rod.
Preferably, the scraper blade is fixed with to the inboard one end of movable rod, and the scraper blade is the arc, and the outside one end of scraper blade is provided with the inclined plane simultaneously.
Through adopting above-mentioned technical scheme, can conveniently clear up the impurity on piston rod surface.
Preferably, movable rod, fixed block, scraper blade and first spring all are provided with three groups, and its equidistant setting.
Through adopting above-mentioned technical scheme, can improve the clearance effect to the piston rod under mutually supporting of scraper blade and first spring.
Preferably, the bottom of the limiting rod is connected with a limiting hole, the limiting hole is formed in the surface of the piston rod, and multiple groups of limiting holes are formed in the limiting hole.
Through adopting above-mentioned technical scheme, can carry out spacing locking to it according to the extended position of piston rod.
Compared with the prior art, the beneficial effects of the utility model are that: the self-locking hydraulic oil cylinder is provided with a hydraulic cylinder,
(1) the hydraulic cylinder is provided with the limiting rod and the second spring, and the limiting rod can be driven to slide downwards under the action of the elastic force of the second spring so as to clamp the bottom of the limiting rod into the limiting hole on the surface of the piston rod, so that the piston rod is limited and locked;
(2) be provided with scraper blade and first spring, can clear up the surface of piston rod when the piston rod contracts through the scraper blade, under the elasticity effect of cooperation first spring for the scraper blade can be better the surface of laminating piston rod, thereby improves the clearance effect.
Drawings
Fig. 1 is a schematic view of the front cross-sectional structure of the present invention;
FIG. 2 is a schematic side view of the fixing ring of the present invention;
FIG. 3 is a schematic view of the structure at A in FIG. 1 according to the present invention;
fig. 4 is a schematic view of the piston rod of the present invention.
In the figure: 1. the cylinder body, 2, advance oil pipe, 3, slide rail, 4, piston, 5, piston rod, 6, sealing washer, 7, solid fixed ring, 8, movable rod, 9, fixed block, 10, scraper blade, 11, first spring, 12, spacing subassembly, 1201, gag lever post, 1202, pull ring, 1203, connecting block, 1204, second spring, 1205, spacing hole.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-4, the present invention provides a technical solution: a self-locking hydraulic oil cylinder is disclosed, as shown in figures 1 and 2, an oil inlet pipe 2 is arranged at one end of the outer side of a cylinder body 1, slide rails 3 are arranged at two ends of the inner wall of the cylinder body 1, the slide rails 3 are in sliding connection with a piston 4, so that the motion trail of the piston 4 can be limited when the piston 4 and the piston rod 5 move, the piston 4 and the piston rod 5 are prevented from rotating due to external pressure, the piston 4 is arranged in the cylinder body 1, the piston rod 5 is fixed at one end of the piston 4, a sealing ring 6 is fixed at one end of the inner wall of the cylinder body 1, a fixing ring 7 is fixed at the other end of the outer side of the cylinder body 1, a scraper 10 is fixed at one end of the inner side of a movable rod 8, the scraper 10 is arc-shaped, an inclined surface is arranged at one end of the outer side of the scraper 10, and the fixed block 9 and the movable rod 8 can be driven to move towards one end close to the central axis of the fixing ring 7 under the action of the first spring 11, so that the movable rod 8 can drive the scraper 10 to be attached to the surface of the piston rod 5, and impurities on the surface of the piston rod 5 can be cleaned when the piston rod 5 contracts.
As shown in fig. 1, 2 and 3, the movable rod 8 runs through and sets up around solid fixed ring 7, and the outside one end of movable rod 8 is fixed with fixed block 9, first spring 11 has been cup jointed on the surface of movable rod 8, and the both ends of first spring 11 are connected with solid fixed ring 7's outer wall and fixed block 9 respectively, movable rod 8, fixed block 9, scraper blade 10 and first spring 11 all are provided with three groups, and its equidistant setting, make can surround piston rod 5, thereby improve the cleaning effect.
As shown in fig. 1, 3 and 4, a limiting component 12 for limiting and locking the piston rod 5 is disposed at the other end of the cylinder body 1, the limiting component 12 includes a limiting rod 1201, a pull ring 1202, a connecting block 1203, a second spring 1204 and a limiting hole 1205, the limiting rod 1201 is disposed at the other end of the cylinder body 1 in a penetrating manner, the pull ring 1202 is fixed at one end of the outer side of the limiting rod 1201, the connecting block 1203 is fixed on the surface of the limiting rod 1201, the second spring 1204 is sleeved on the surface of the limiting rod 1201, both ends of the second spring 1204 are respectively connected with the connecting block 1203 and the inner wall of one end of the cylinder body 1, the bottom of the limiting rod 1201 is connected with the limiting hole 1205, the limiting hole 1205 is opened on the surface of the piston rod 5, and the multiple sets of the limiting holes 1205 are provided, the connecting block 1203 and the limiting rod can be driven to slide downwards by the elastic force of the second spring 1204, so that the bottom of the limiting rod 1201 can be clamped into the limiting hole 1205 on the surface of the piston rod 5, thereby carry out spacing locking to piston rod 5, simple structure, it is fixed effectual, avoid piston rod 5 to appear not hard up phenomenon.
The working principle is as follows: when the self-locking hydraulic oil cylinder is used, firstly, a hydraulic oil pipe is connected to an oil inlet pipe 2 at one end of the outer side of a cylinder body 1, then a pull ring 1202 at the other end of the outer side of the cylinder body 1 is pulled to drive a limiting rod 1201 to rise, the bottom of the limiting rod 1201 is separated from a limiting hole 1205 on the surface of a piston rod 5, then a hydraulic oil conveying valve is opened, hydraulic oil is conveyed into the cylinder body 1, the piston 4 and the piston rod 5 are pushed by the hydraulic oil to move, when the piston rod 5 extends to a required length, the pull ring 1202 is loosened, so that a connecting block 1203 and the limiting rod 1201 are clamped into the limiting hole 1205 on the surface of the piston rod 5 under the elastic force action of a spring, the piston rod 5 is limited and locked, the stability in the use process is improved, when pressure relief is needed after the use, in the contraction process of the piston rod 5, the surface of the piston rod 5 can be cleaned through a scraper 10 on the inner side of a fixing ring 7, and under the elastic force action of a first spring 11, so that the movable rod 8 can be driven to enclose the middle point of the fixed ring 7, so that the scraper 10 can be more attached to the surface of the piston rod 5 for cleaning, and the cleaning effect is improved, which completes the whole operation, and the content not described in detail in the specification belongs to the prior art known by the professional in the field.
The terms "central," "longitudinal," "lateral," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for ease of description, but are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the scope of the invention.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (6)
1. The utility model provides a self-locking hydraulic oil cylinder, includes cylinder body (1), movable rod (8) and spacing subassembly (12), its characterized in that:
an oil inlet pipe (2) is arranged at one end of the outer side of the cylinder body (1), a piston (4) is arranged in the cylinder body (1), a piston rod (5) is fixed at one end of the piston (4), a sealing ring (6) is fixed at one end of the inner wall of the cylinder body (1), and a fixing ring (7) is fixed at the other end of the outer side of the cylinder body (1);
the movable rod (8) penetrates through the periphery of the fixed ring (7), a fixed block (9) is fixed at one end of the outer side of the movable rod (8), a first spring (11) is sleeved on the surface of the movable rod (8), and two ends of the first spring (11) are respectively connected with the outer wall of the fixed ring (7) and the fixed block (9);
the limiting assembly (12) used for limiting and locking the piston rod (5) is arranged at the other end of the cylinder body (1).
2. The self-locking hydraulic oil cylinder according to claim 1, characterized in that: spacing subassembly (12) include gag lever post (1201), pull ring (1202), connecting block (1203), second spring (1204) and spacing hole (1205), gag lever post (1201) runs through the other end that sets up at cylinder body (1), and the outside one end of gag lever post (1201) is fixed with pull ring (1202), the fixed surface of gag lever post (1201) has connecting block (1203), and the surface of gag lever post (1201) has cup jointed second spring (1204), and the both ends of second spring (1204) are connected with the one end inner wall of connecting block (1203) and cylinder body (1) respectively simultaneously.
3. The self-locking hydraulic oil cylinder according to claim 1, characterized in that: the two ends of the inner wall of the cylinder body (1) are provided with slide rails (3), and the slide rails (3) are in sliding connection with the piston (4).
4. The self-locking hydraulic oil cylinder according to claim 1, characterized in that: the scraper blade (10) is fixed with to the inboard one end of movable rod (8), and scraper blade (10) are the arc, and the outside one end of scraper blade (10) is provided with the inclined plane simultaneously.
5. The self-locking hydraulic oil cylinder according to claim 1, characterized in that: the movable rod (8), the fixed block (9), the scraper (10) and the first spring (11) are all provided with three groups and are arranged at equal intervals.
6. The self-locking hydraulic oil cylinder according to claim 2, characterized in that: the bottom of the limiting rod (1201) is connected with a limiting hole (1205), the limiting hole (1205) is formed in the surface of the piston rod (5), and multiple groups of limiting holes (1205) are formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121745703.9U CN215109818U (en) | 2021-07-29 | 2021-07-29 | Self-locking hydraulic oil cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121745703.9U CN215109818U (en) | 2021-07-29 | 2021-07-29 | Self-locking hydraulic oil cylinder |
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| Publication Number | Publication Date |
|---|---|
| CN215109818U true CN215109818U (en) | 2021-12-10 |
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ID=79319266
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121745703.9U Active CN215109818U (en) | 2021-07-29 | 2021-07-29 | Self-locking hydraulic oil cylinder |
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| Country | Link |
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| CN (1) | CN215109818U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115289096A (en) * | 2022-09-29 | 2022-11-04 | 常州市振跃液压机械有限公司 | Take auto-lock protection device's explosion-proof hydraulic cylinder |
| CN116538171A (en) * | 2023-07-03 | 2023-08-04 | 南安市泉信液压机械有限公司 | Hydraulic cylinder locking mechanism |
| CN117249145A (en) * | 2023-11-17 | 2023-12-19 | 常州市振跃液压机械有限公司 | Hydraulic cylinder with mechanical locking function |
| CN117847046A (en) * | 2024-02-21 | 2024-04-09 | 江苏亚力亚气动液压成套设备有限公司 | Lifting type oil cylinder with locking structure |
-
2021
- 2021-07-29 CN CN202121745703.9U patent/CN215109818U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115289096A (en) * | 2022-09-29 | 2022-11-04 | 常州市振跃液压机械有限公司 | Take auto-lock protection device's explosion-proof hydraulic cylinder |
| CN115289096B (en) * | 2022-09-29 | 2023-02-03 | 常州市振跃液压机械有限公司 | Take auto-lock protection device's explosion-proof hydraulic cylinder |
| CN116538171A (en) * | 2023-07-03 | 2023-08-04 | 南安市泉信液压机械有限公司 | Hydraulic cylinder locking mechanism |
| CN116538171B (en) * | 2023-07-03 | 2023-09-15 | 南安市泉信液压机械有限公司 | Hydraulic cylinder locking mechanism |
| CN117249145A (en) * | 2023-11-17 | 2023-12-19 | 常州市振跃液压机械有限公司 | Hydraulic cylinder with mechanical locking function |
| CN117847046A (en) * | 2024-02-21 | 2024-04-09 | 江苏亚力亚气动液压成套设备有限公司 | Lifting type oil cylinder with locking structure |
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