CN212429397U - Cylinder with self-locking function - Google Patents
Cylinder with self-locking function Download PDFInfo
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- CN212429397U CN212429397U CN202021146049.5U CN202021146049U CN212429397U CN 212429397 U CN212429397 U CN 212429397U CN 202021146049 U CN202021146049 U CN 202021146049U CN 212429397 U CN212429397 U CN 212429397U
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Abstract
The utility model discloses a take self-locking function's cylinder belongs to telescopic cylinder technical field. The cylinder with the self-locking function comprises a cylinder body, a rear cover, a front cover, a piston rod, a piston, a lock sleeve and a self-locking device; the rear cover and the front cover are respectively and fixedly connected to two ends of the cylinder body; one end of the piston rod is fixedly connected with the piston, and the other end of the piston rod penetrates through the front cover; the piston rod is driven by the piston to move back and forth in the cylinder body; the lock sleeve is fixedly connected to the bottom surface of the piston, the self-locking device vertically penetrates through the cylinder body and the rear cover, and the movement of the lock sleeve can be limited through the self-locking device, so that the movement of the piston and the movement of the piston rod are limited. The cylinder with the self-locking function locks the cylinder piston through a mechanical structure, is safe and reliable compared with a jacking force mode that a traditional cylinder keeps stable, has a simple structure, is wide in application range, and has low requirements on an air source and an air circuit component.
Description
Technical Field
The utility model relates to a telescopic cylinder technical field, in particular to take self-locking function's cylinder.
Background
In industrial production, a jacking cylinder is often required to keep constant jacking force or sealing effect, and the technical means adopted at the present stage comprises the following modes:
1. a pressure stabilizing valve and a one-way valve are arranged at the main air inlet of the air cylinder, so that the air inlet pressure of the air cylinder is stable and the air cannot flow out reversely; the mode has higher requirements on gas circuit components and is unreliable for open-loop control.
2. The air inlet mode of the air cylinder is a switch mode, and the air inlet of the air cylinder is always kept smooth with an air source when jacking is needed; this method can ensure stable supply of the lift-up gas but consumes much gas and is liable to cause accelerated wear of the cylinder seal.
3. Judging whether the cylinder needs a small-caliber branch for air supplement by adopting a magnetic switch type logic valve so as to ensure that the cylinder keeps stable jacking force; the mode is not suitable for vibration occasions and has a complex structure.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a take self-locking function's cylinder to there is the problem of different defects in the jacking force or the sealed effect that solve and use traditional jacking cylinder to keep invariable.
In order to solve the technical problem, the utility model provides a cylinder with a self-locking function, which comprises a cylinder body, a rear cover, a front cover, a piston rod, a piston, a lock sleeve and a self-locking device;
the rear cover and the front cover are respectively and fixedly connected to two ends of the cylinder body;
one end of the piston rod is fixedly connected with the piston, and the other end of the piston rod penetrates through the front cover; the piston rod is driven by the piston to move back and forth in the cylinder body;
the lock sleeve is fixedly connected to the bottom surface of the piston, the self-locking device vertically penetrates through the cylinder body and the rear cover, and the movement of the lock sleeve can be limited through the self-locking device, so that the movement of the piston and the movement of the piston rod are limited.
Optionally, the self-locking device is composed of a piston interlocking rod, a gland, a spring, an emergency handle and a connecting rod; two ends of the connecting rod are respectively fixedly connected with the piston interlocking rod and the emergency handle; the gland is fixedly connected to the side wall of the rear cover; the spring passes through the connecting rod and is positioned between the gland and the piston interlocking rod.
Optionally, the piston interlocking rod is a T-shaped locking rod, an air passage is formed in the middle of the piston interlocking rod, an air cavity is formed in a contact surface, which is transverse to the rear cover, of the piston interlocking rod, and the air cavity can increase the contact surface between air and the piston interlocking rod, so that the lifting air pressure is reduced.
Optionally, the contact surface of the piston interlocking rod and the rear cover is in sealing connection through a sealing ring, and the piston interlocking rod can slide back and forth in the rear cover.
Optionally, a clamping groove is formed in the side wall of the lock sleeve, and the position of the clamping groove corresponds to the position of the piston interlocking rod.
Optionally, one end of the lock sleeve, which is far away from the piston, is provided with a conical angle, and the conical angle can facilitate the piston interlocking rod to slide into the clamping groove.
Optionally, the piston is connected with the contact surface of the inner wall of the cylinder body in a sealing manner through a sealing ring, and the piston divides the inner cavity of the cylinder body into two independent sealing spaces.
Optionally, a front air inlet is formed in the side wall of the front cover, and the front air inlet is communicated with the cavity in the cylinder body.
Optionally, a rear air inlet is formed in the side wall of the rear cover and communicated with the cavity in the cylinder body.
The utility model provides a cylinder with self-locking function, which comprises a cylinder body, a rear cover, a front cover, a piston rod, a piston, a lock sleeve and a self-locking device; the rear cover and the front cover are respectively and fixedly connected to two ends of the cylinder body; one end of the piston rod is fixedly connected with the piston, and the other end of the piston rod penetrates through the front cover; the piston rod is driven by the piston to move back and forth in the cylinder body; the lock sleeve is fixedly connected to the bottom surface of the piston, the self-locking device vertically penetrates through the cylinder body and the rear cover, and the movement of the lock sleeve can be limited through the self-locking device, so that the movement of the piston and the movement of the piston rod are limited. The cylinder with the self-locking function locks the cylinder piston through a mechanical structure, is safe and reliable compared with a jacking force mode that a traditional cylinder keeps stable, has a simple structure, is wide in application range, and has low requirements on an air source and an air circuit component.
Drawings
Fig. 1 is an overall cross-sectional view of a cylinder with a self-locking function provided by the present invention;
fig. 2 is a partial enlarged view of a cylinder with a self-locking function provided by the present invention;
fig. 3 is an external structural schematic diagram of a cylinder with a self-locking function provided by the utility model.
Detailed Description
The following provides a further detailed description of the cylinder with self-locking function in accordance with the present invention with reference to the accompanying drawings and specific embodiments. The advantages and features of the present invention will become more fully apparent from the following description and appended claims. It should be noted that the drawings are in simplified form and are not to precise scale, and are provided for convenience and clarity in order to facilitate the description of the embodiments of the present invention.
Example one
The utility model provides a cylinder with self-locking function, the structure of which is shown in figure 1, and the cylinder comprises a cylinder body 1, a rear cover 2, a front cover 3, a piston rod 4, a piston 5, a lock sleeve 6 and a self-locking device 7; the rear cover 2 and the front cover 3 are respectively and fixedly connected to two ends of the cylinder body 1; one end of the piston rod 4 is fixedly connected with the piston 5, and the other end of the piston rod penetrates through the front cover 3; the piston rod 4 is driven by the piston 5 to move back and forth in the cylinder 1; the lock sleeve 6 is fixedly connected to the bottom surface of the piston 5, the self-locking device 7 vertically penetrates through the cylinder body 1 and the rear cover 2, and the self-locking device 7 can limit the movement of the lock sleeve 6, so that the movement of the piston 5 and the piston rod 4 is limited; the piston 5 with through sealing washer sealing connection between the 1 inner wall contact surface of cylinder body, the piston 5 will 1 inside cavity of cylinder body is cut apart into two independent sealed spaces.
Specifically, as shown in fig. 2, the self-locking device 7 is composed of a piston interlocking rod 71, a gland 72, a spring 73, an emergency handle 74 and a connecting rod 75; both ends of the connecting rod 75 are respectively fixedly connected with the piston interlocking rod 71 and the emergency handle 74; the gland 72 is fixedly connected to the side wall of the rear cover 2; the spring 73 passes through the connecting rod 75 and is located between the gland 72 and the piston interlock rod 71; the piston interlocking rod 71 is a T-shaped lock rod, an air channel 76 is formed in the middle of the piston interlocking rod, an air cavity 77 is formed in the transverse contact surface of the piston interlocking rod and the rear cover 2, and the air cavity 77 can increase the contact surface of air and the piston interlocking rod 71, so that the lifting air pressure is reduced; the contact surface of the piston interlocking rod 71 and the rear cover 2 is in sealing connection through a sealing ring 78, and the piston interlocking rod 71 can slide back and forth in the rear cover 2; a clamping groove 61 is formed in the side wall of the lock sleeve 6, and the position of the clamping groove 61 corresponds to that of the piston interlocking rod 71; the end of the lock sleeve 6 away from the piston 5 is provided with a conical angle 62, and the conical angle 62 can facilitate the piston interlocking rod 71 to slide into the clamping groove 61.
Specifically, as shown in fig. 3, a front air inlet 8 is formed in a side wall of the front cover 3, and the front air inlet 8 is communicated with an inner cavity of the cylinder 1; the side wall of the rear cover 2 is provided with a rear air inlet 9, and the rear air inlet 9 is communicated with the cavity in the cylinder body 1.
Specifically, when the piston rod 4 needs to be extended, gas is introduced from the rear gas inlet 9, the gas enters the cavity inside the cylinder 1 and then is located in the rear cavity, the lock sleeve 6 is clamped by the self-locking device 7, so that the piston 5 cannot move forward, the gas enters the gas channel 76 through a gap between the lock sleeve 6 and the piston interlocking rod 71 and is converged in the gas cavity 77, the piston interlocking rod 71 is connected with the rear cover 2 in a sealing manner through the seal ring 78, so that the piston interlocking rod 71 can move upward under certain gas pressure and is separated from the lock sleeve 6, and finally the lock sleeve 6 and the piston 5 push the piston rod 4 to move forward under the action of the gas pressure; when the cylinder with the self-locking function has a mechanical fault, the piston interlocking rod 71 can be manually lifted by pulling the emergency handle 74, so that the normal operation of the cylinder is ensured; when the piston rod 4 needs to be fixed at a certain position, gas is introduced from the front gas inlet 8, the piston 5 and the lock sleeve 6 move backwards under the action of gas pressure, at this time, as the gas pressure between the piston 5 and the rear cover 2 is reduced, the piston interlocking rod 71 moves downwards under the action of the elastic force of the spring 73 and is clamped in the clamping groove 61, and therefore the lock sleeve 6 and the piston 5 and the piston rod 4 fixedly connected with the lock sleeve are locked.
The above description is only for the preferred embodiment of the present invention and is not intended to limit the scope of the present invention, and any modification and modification made by those skilled in the art according to the above disclosure are all within the scope of the claims.
Claims (9)
1. The cylinder with the self-locking function is characterized by comprising a cylinder body (1), a rear cover (2), a front cover (3), a piston rod (4), a piston (5), a lock sleeve (6) and a self-locking device (7);
the rear cover (2) and the front cover (3) are respectively and fixedly connected to the two ends of the cylinder body (1);
one end of the piston rod (4) is fixedly connected with the piston (5), and the other end of the piston rod penetrates through the front cover (3); the piston rod (4) is driven by the piston (5) to move back and forth in the cylinder body (1);
the lock sleeve (6) is fixedly connected to the bottom surface of the piston (5), the self-locking device (7) vertically penetrates through the cylinder body (1) and the rear cover (2), and the self-locking device (7) can limit the movement of the lock sleeve (6) so as to limit the movement of the piston (5) and the piston rod (4).
2. The cylinder with the self-locking function according to claim 1, wherein the self-locking device (7) is composed of a piston interlocking rod (71), a gland (72), a spring (73), an emergency handle (74) and a connecting rod (75); two ends of the connecting rod (75) are respectively and fixedly connected with the piston interlocking rod (71) and the emergency handle (74); the gland (72) is fixedly connected to the side wall of the rear cover (2); the spring (73) passes through the connecting rod (75) and is located between the gland (72) and the piston interlock rod (71).
3. The cylinder with the self-locking function according to claim 2, wherein the piston interlocking rod (71) is a T-shaped locking rod, an air channel (76) is formed in the middle, an air chamber (77) is formed on a contact surface which is transverse to the rear cover (2), and the air chamber (77) can increase the contact surface of air and the piston interlocking rod (71), so that the lifting air pressure is reduced.
4. The cylinder with the self-locking function according to claim 2, wherein the contact surface of the piston interlocking rod (71) and the rear cover (2) is in sealing connection through a sealing ring (78), and the piston interlocking rod (71) can slide back and forth in the rear cover (2).
5. The cylinder with the self-locking function according to claim 2, wherein a clamping groove (61) is formed in the side wall of the lock sleeve (6), and the position of the clamping groove (61) corresponds to the position of the piston interlocking rod (71).
6. The cylinder with the self-locking function according to claim 5, wherein a taper angle (62) is arranged at one end of the lock sleeve (6) far away from the piston (5), and the taper angle (62) can facilitate the piston interlocking rod (71) to slide into the clamping groove (61).
7. The cylinder with the self-locking function according to claim 1, wherein the piston (5) is connected with the contact surface of the inner wall of the cylinder body (1) in a sealing manner through a sealing ring, and the piston (5) divides the inner cavity of the cylinder body (1) into two independent sealing spaces.
8. The cylinder with the self-locking function according to claim 1, wherein a front air inlet (8) is formed in the side wall of the front cover (3), and the front air inlet (8) is communicated with the cavity inside the cylinder body (1).
9. The cylinder with the self-locking function according to claim 1, wherein the side wall of the rear cover (2) is provided with a rear air inlet (9), and the rear air inlet (9) is communicated with the cavity inside the cylinder body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021146049.5U CN212429397U (en) | 2020-06-18 | 2020-06-18 | Cylinder with self-locking function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021146049.5U CN212429397U (en) | 2020-06-18 | 2020-06-18 | Cylinder with self-locking function |
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| Publication Number | Publication Date |
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| CN212429397U true CN212429397U (en) | 2021-01-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202021146049.5U Active CN212429397U (en) | 2020-06-18 | 2020-06-18 | Cylinder with self-locking function |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113294402A (en) * | 2021-06-23 | 2021-08-24 | 乐清市恒一气动有限公司 | Self-locking air cylinder |
| CN114718939A (en) * | 2022-06-08 | 2022-07-08 | 中国飞机强度研究所 | Air cannon heavy piston system for aircraft dynamics test and use method thereof |
-
2020
- 2020-06-18 CN CN202021146049.5U patent/CN212429397U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113294402A (en) * | 2021-06-23 | 2021-08-24 | 乐清市恒一气动有限公司 | Self-locking air cylinder |
| CN114718939A (en) * | 2022-06-08 | 2022-07-08 | 中国飞机强度研究所 | Air cannon heavy piston system for aircraft dynamics test and use method thereof |
| CN114718939B (en) * | 2022-06-08 | 2022-08-12 | 中国飞机强度研究所 | Air cannon heavy piston system for aircraft dynamics test and use method thereof |
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