CN214247860U - Hydraulic cylinder with self-locking function - Google Patents
Hydraulic cylinder with self-locking function Download PDFInfo
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- CN214247860U CN214247860U CN202120043159.7U CN202120043159U CN214247860U CN 214247860 U CN214247860 U CN 214247860U CN 202120043159 U CN202120043159 U CN 202120043159U CN 214247860 U CN214247860 U CN 214247860U
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Abstract
The utility model discloses a pneumatic cylinder with self-locking function, including the pneumatic cylinder body, the pneumatic cylinder body includes the pneumatic cylinder, pneumatic cylinder inner wall one side fixedly connected with rear end cap, rear end cap inner wall one side is provided with the piston body, piston body top one side runs through there is the locking hole, the inside threaded connection of piston body has the piston rod, piston rod and pneumatic cylinder sliding connection, be provided with the uide bushing between piston rod and the pneumatic cylinder. The utility model discloses machinery auto-lock pneumatic cylinder owing to be provided with the scalable self-locking mechanism of piston rod front end complex, after the piston rod motion targets in place, flexible self-locking mechanism stretches out and terminal surface cooperation before the piston, pins the piston rod, when the piston rod will be withdrawed, scalable self-locking mechanism contracts earlier, makes flexible self-locking mechanism contact auto-lock earlier through the sequence valve, and the hydro-cylinder is retracted afterwards for whole pneumatic cylinder bearing capacity is big, moves safe and reliable.
Description
Technical Field
The utility model relates to a pneumatic cylinder technical field, concretely relates to have self-locking function pneumatic cylinder.
Background
The hydraulic cylinder is a hydraulic actuator which converts hydraulic energy into mechanical energy and performs linear reciprocating motion (or swinging motion). It has simple structure and reliable operation. When it is used to implement reciprocating motion, it can remove speed reducer, and has no transmission gap, and its motion is stable, so that it can be extensively used in hydraulic systems of various machines, and the output force of hydraulic cylinder is directly proportional to effective area of piston and its pressure difference of two sides, and the hydraulic cylinder is basically formed from cylinder barrel and cylinder cover, piston and piston rod, sealing device, buffer device and exhaust device, and the buffer device and exhaust device are defined according to specific application occasion, and other devices are necessary.
At present, the methods for locking the piston rod of the hydraulic cylinder mainly comprise the following steps:
1. a hydraulic lock is used in a hydraulic system to prevent the flow of hydraulic oil to lock a piston rod of a hydraulic cylinder; this locking method has significant disadvantages: the internal leakage of the hydraulic cylinder body and the hydraulic lock ensures that a piston rod of the hydraulic cylinder is not easy to lock, and the locking reliability is influenced by the quality of a hydraulic lock element, the quality of a cylinder sealing element, the cleanliness of hydraulic oil and the like;
2. the locking method has the advantages that the locking sleeve is used, the piston rod is tightly held through interference fit to achieve locking, the locking method has small locking load force and needs high-pressure oil for unlocking;
3. the piston rod is fixed by a bolt mechanism or a cushion block, and the bolt or the cushion block needs to be manually moved by the locking method.
Therefore, it is necessary to provide a hydraulic cylinder with a self-locking function to solve the above problems.
Disclosure of Invention
The utility model aims at providing a hydraulic cylinder with self-locking function, which can slide the piston rod into the cylinder barrel of the hydraulic cylinder to fix the front end part of the piston rod with the piston body by screw thread, drive the piston body to slide in the hydraulic cylinder body, and slide the locking piston in the locking groove by the resilience of the locking spring, so as to lock the locking piston and the locking hole, and further lock the piston rod, and the mechanical self-locking hydraulic cylinder provided by the utility model is provided with a telescopic self-locking mechanism matched with the front end of the piston rod, when the piston rod moves in place, the telescopic self-locking mechanism extends out to be matched with the front end surface of the piston to lock the piston rod, when the piston rod is to be retracted, the telescopic self-locking mechanism is firstly contracted, and mechanical self-locking is realized by a sequence valve, so that the bearing capacity of the whole hydraulic cylinder is large, the operation is safe and reliable, so as to solve the defects in the technology.
In order to achieve the above object, the present invention provides the following technical solutions: the utility model provides a pneumatic cylinder with self-locking function, includes the pneumatic cylinder body, the pneumatic cylinder body includes the pneumatic cylinder, pneumatic cylinder inner wall one side fixedly connected with rear end cap, rear end cap inner wall one side is provided with the piston body, piston body top one side runs through there is the locking hole, the inside threaded connection of piston body has the piston rod, piston rod and pneumatic cylinder sliding connection, be provided with the uide bushing between piston rod and the pneumatic cylinder, uide bushing and pneumatic cylinder fixed connection, the uide bushing top runs through there is the locking groove, locking inslot wall fixedly connected with locking spring, locking spring top fixedly connected with locking end cover, locking end cover top fixedly connected with locking piston, locking piston and locking groove sliding connection, locking piston pegs graft with the locking hole.
Preferably, the piston body is slidably connected with the cylinder barrel of the hydraulic cylinder.
Preferably, an action hole is formed between the guide sleeve and the cylinder barrel of the hydraulic cylinder, and a sequence valve end cover is in threaded connection with the inside of the action hole.
Preferably, one side of the outer wall of the sequence valve end cover is fixedly connected with a sequence valve spring, and one side of the outer wall of the sequence valve spring is provided with a steel ball.
Preferably, an oil hole penetrates through the hydraulic cylinder body, and a ball expansion type plug is arranged on one side of the inner wall of the oil hole.
Preferably, the piston rod penetrates through the cylinder barrel of the hydraulic cylinder, and the piston rod extends to one side of the outer wall of the cylinder barrel of the hydraulic cylinder.
In the technical scheme, the utility model provides a technological effect and advantage:
the front end part of the piston rod is fixed with the piston body by screw threads by sliding the piston rod into the cylinder barrel of the hydraulic cylinder, the piston body is driven to slide in the hydraulic cylinder body, the locking piston slides in the locking groove by the resilience force of the locking spring while sliding, and the locking piston is further locked with the locking hole, thereby automatically inserting the piston body for locking, realizing mechanical self-locking and further locking the piston rod, the mechanical self-locking hydraulic cylinder provided by the utility model, because the telescopic self-locking mechanism matched with the front end of the piston rod is arranged, when the piston rod moves in place, the telescopic self-locking mechanism extends out to be matched with the front end surface of the piston to lock the piston rod, when the piston rod is to be retracted, the telescopic self-locking mechanism contracts first, and mechanical self-locking is realized through the sequence valve, so that the whole hydraulic cylinder is large in bearing capacity and safe and reliable in operation.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to these drawings.
FIG. 1 is an overall structure diagram of the present invention;
FIG. 2 is an enlarged schematic view of the structure at A of FIG. 1 according to the present invention;
FIG. 3 is an enlarged schematic view of the structure of FIG. 1 at B according to the present invention;
fig. 4 is an enlarged schematic structural diagram of the point C in fig. 1 according to the present invention.
Description of reference numerals:
1. a hydraulic cylinder body; 2. a hydraulic cylinder barrel; 3. a rear end cap; 4. a piston body; 5. a locking hole; 6. a piston rod; 7. a guide sleeve; 8. a locking groove; 9. a locking spring; 10. locking the end cover; 11. locking the piston; 12. a sequence valve end cap; 13. a sequence valve spring; 14. a steel ball; 15. ball expansion type plug.
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.
The utility model provides a hydraulic cylinder with self-locking function as shown in figures 1-4, which comprises a hydraulic cylinder body 1, wherein the hydraulic cylinder body 1 comprises a hydraulic cylinder barrel 2, one side of the inner wall of the hydraulic cylinder barrel 2 is fixedly connected with a rear end cover 3, one side of the inner wall of the rear end cover 3 is provided with a piston body 4, one side of the top of the piston body 4 is penetrated with a locking hole 5, the inner part of the piston body 4 is connected with a piston rod 6 by screw threads, the piston rod 6 is connected with the hydraulic cylinder barrel 2 in a sliding way, a guide sleeve 7 is arranged between the piston rod 6 and the hydraulic cylinder barrel 2, the guide sleeve 7 is fixedly connected with the hydraulic cylinder barrel 2, the top of the guide sleeve 7 is penetrated with a locking groove 8, the inner wall of the locking groove 8 is fixedly connected with a locking spring 9, the top of the locking spring 9 is fixedly connected with a locking end cover 10, the top of the locking end cover 10 is fixedly connected with a locking piston 11, the locking piston 11 is connected with the locking groove 8 in a sliding mode, and the locking piston 11 is connected with the locking hole 5 in an inserted mode.
Further, in the above technical solution, the piston body 4 is slidably connected to the hydraulic cylinder barrel 2, and the structure effectively shows that the front end portion of the piston rod 6 is screwed to the piston body 4 to drive the piston body 4 to slide inside the hydraulic cylinder body 1.
Further, in the above technical solution, an action hole is provided between the guide sleeve 7 and the hydraulic cylinder barrel 2, and a sequence valve end cover 12 is connected to the inside of the action hole through a thread, which effectively indicates that the sequence valve end cover 12 is fixed to the inside of the action hole between the guide sleeve 7 and the hydraulic cylinder barrel 2.
Furthermore, in the above technical solution, a sequence valve spring 13 is fixedly connected to one side of an outer wall of the sequence valve end cover 12, and a steel ball 14 is disposed on one side of an outer wall of the sequence valve spring 13.
Furthermore, in the above technical solution, an oil hole penetrates through the hydraulic cylinder body 1, and a ball expansion type plug 15 is arranged on one side of the inner wall of the oil hole.
Further, in the above technical solution, the piston rod 6 penetrates through the hydraulic cylinder barrel 2, and the piston rod 6 extends to one side of the outer wall of the hydraulic cylinder barrel 2, which effectively explains that the piston rod 6 is convenient to slide inside the hydraulic cylinder barrel 2.
This practical theory of operation:
referring to the attached drawings 1-4 of the specification, when the device is used, firstly, the piston rod 6 is slid into the hydraulic cylinder barrel 2, the front end part of the piston rod 6 is fixed with the piston body 4 through threads, the piston body 4 is driven to slide in the hydraulic cylinder body 1, the locking piston 11 slides in the locking groove 8 through the rebound force of the locking spring 9 while sliding, the locking piston 11 is further locked with the locking hole 5, and is automatically inserted into the piston body 4 for locking, mechanical self-locking is realized, the piston rod 6 is further locked through the wedge-shaped surface of the locking piston 11 in the motion process of the piston 4, the whole hydraulic cylinder has large bearing capacity, and the operation is safe and reliable, because the mechanical self-locking hydraulic cylinder provided by the utility model is provided with the telescopic self-locking mechanism matched with the front end of the piston rod 6, when the piston rod moves in place, the telescopic self-locking mechanism extends out to be matched with the front end face of the piston to lock the piston rod 6, when the piston rod 6 is to be retracted, the telescopic self-locking mechanism is firstly contacted for self-locking through the sequence valve, and then the oil cylinder retracts.
The utility model discloses the standard part that uses all can purchase from the market, and dysmorphism piece all can be customized according to the description with the record of drawing of description, and the concrete connection mode of each part all adopts conventional means such as ripe bolt, rivet, welding among the prior art, and machinery, part and equipment all adopt prior art, and conventional model, including circuit connection adopts conventional connection mode among the prior art, does not detailed here again.
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 pneumatic cylinder with self-locking function, includes pneumatic cylinder body (1), its characterized in that: the hydraulic cylinder comprises a hydraulic cylinder body (1) and is characterized in that the hydraulic cylinder body (1) comprises a hydraulic cylinder barrel (2), a rear end cover (3) is fixedly connected to one side of the inner wall of the hydraulic cylinder barrel (2), a piston body (4) is arranged on one side of the inner wall of the rear end cover (3), a locking hole (5) penetrates through one side of the top of the piston body (4), a piston rod (6) is in threaded connection with the inside of the piston body (4), the piston rod (6) is in sliding connection with the hydraulic cylinder barrel (2), a guide sleeve (7) is arranged between the piston rod (6) and the hydraulic cylinder barrel (2), the guide sleeve (7) is fixedly connected with the hydraulic cylinder barrel (2), a locking groove (8) penetrates through the top of the guide sleeve (7), a locking spring (9) is fixedly connected to the inner wall of the locking groove (8), a locking end cover (10) is fixedly connected to the top of the locking spring (9), and a locking piston (11) is fixedly connected to the top of the locking end cover (10), the locking piston (11) is connected with the locking groove (8) in a sliding mode, and the locking piston (11) is connected with the locking hole (5) in an inserted mode.
2. The hydraulic cylinder with the self-locking function according to claim 1, characterized in that: the piston body (4) is connected with the hydraulic cylinder barrel (2) in a sliding mode.
3. The hydraulic cylinder with the self-locking function according to claim 1, characterized in that: an acting hole is formed between the guide sleeve (7) and the hydraulic cylinder barrel (2), and a sequence valve end cover (12) is in threaded connection with the inside of the acting hole.
4. The hydraulic cylinder with the self-locking function according to claim 3, characterized in that: the sequence valve is characterized in that a sequence valve spring (13) is fixedly connected to one side of the outer wall of the sequence valve end cover (12), and a steel ball (14) is arranged on one side of the outer wall of the sequence valve spring (13).
5. The hydraulic cylinder with the self-locking function according to claim 1, characterized in that: an oil hole penetrates through the interior of the hydraulic cylinder body (1), and a ball expansion type plug (15) is arranged on one side of the inner wall of the oil hole.
6. The hydraulic cylinder with the self-locking function according to claim 1, characterized in that: the piston rod (6) penetrates through the hydraulic cylinder barrel (2), and the piston rod (6) extends to one side of the outer wall of the hydraulic cylinder barrel (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120043159.7U CN214247860U (en) | 2021-01-08 | 2021-01-08 | Hydraulic cylinder with self-locking function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120043159.7U CN214247860U (en) | 2021-01-08 | 2021-01-08 | Hydraulic cylinder with self-locking function |
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| Publication Number | Publication Date |
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| CN214247860U true CN214247860U (en) | 2021-09-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120043159.7U Active CN214247860U (en) | 2021-01-08 | 2021-01-08 | Hydraulic cylinder with self-locking function |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114151408A (en) * | 2021-12-03 | 2022-03-08 | 张家港赫斯曼液压设备有限公司 | Single-rod self-locking type double-acting hydraulic actuator |
| CN114215816A (en) * | 2021-12-04 | 2022-03-22 | 建湖县八达液压机械有限公司 | Self-locking device of telescopic hydraulic oil cylinder and mechanical locking hydraulic oil cylinder provided with same |
| CN114542544A (en) * | 2022-01-18 | 2022-05-27 | 靖江市闻达机械有限公司 | Hydraulic rod with lateral adjustment self-locking mechanism |
-
2021
- 2021-01-08 CN CN202120043159.7U patent/CN214247860U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114151408A (en) * | 2021-12-03 | 2022-03-08 | 张家港赫斯曼液压设备有限公司 | Single-rod self-locking type double-acting hydraulic actuator |
| CN114215816A (en) * | 2021-12-04 | 2022-03-22 | 建湖县八达液压机械有限公司 | Self-locking device of telescopic hydraulic oil cylinder and mechanical locking hydraulic oil cylinder provided with same |
| CN114215816B (en) * | 2021-12-04 | 2024-02-02 | 建湖县八达液压机械有限公司 | Mechanical locking hydraulic cylinder |
| CN114542544A (en) * | 2022-01-18 | 2022-05-27 | 靖江市闻达机械有限公司 | Hydraulic rod with lateral adjustment self-locking mechanism |
| CN114542544B (en) * | 2022-01-18 | 2022-11-04 | 靖江市闻达机械有限公司 | Hydraulic rod with lateral adjustment self-locking mechanism |
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