CN211174869U - Hydraulic operating mechanism and double-guide-structure piston rod thereof - Google Patents
Hydraulic operating mechanism and double-guide-structure piston rod thereof Download PDFInfo
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- CN211174869U CN211174869U CN201922381660.XU CN201922381660U CN211174869U CN 211174869 U CN211174869 U CN 211174869U CN 201922381660 U CN201922381660 U CN 201922381660U CN 211174869 U CN211174869 U CN 211174869U
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Abstract
The utility model discloses a hydraulic pressure operating mechanism is with two guide structure piston rods, piston rod assembly in the working cylinder working hole, reciprocating motion in the working cylinder is provided with the piston on the piston rod, has set gradually first ring channel, second ring channel and third ring channel on the piston, and in arranging first ring channel in the first guidance tape, place the second ring channel in the sealing washer in, arrange the third ring channel in the second guidance tape. And a second guide belt is used for replacing a metal guide ring to realize the guide of the piston rod. Meanwhile, a first guide belt is added to provide a pre-guide function for the piston rod, so that the guide precision of the piston rod in the movement process is improved. The pre-guiding function is added, the processing difficulty of the piston rod is reduced, the guiding precision is improved, meanwhile, the abrasion of the piston rod and a guiding belt thereof is greatly reduced, and the poor sealing condition of a hydraulic system caused by eccentric wear of the piston rod is effectively solved. The utility model discloses still disclose a hydraulic pressure operating mechanism.
Description
Technical Field
The utility model relates to a piston technical field especially relates to a hydraulic pressure operating mechanism and two guide structure piston rods thereof.
Background
Circuit breakers, also known as high voltage switches, are critical control and protection devices in power systems, which can control the operation and the stoppage of equipment lines in a power grid, and when a line in the power grid fails, can quickly cut off the failed line and equipment, ensure the safety of the equipment in the power grid, and maintain the normal operation of other parts of the power grid.
The operating mechanism is a driving device of the circuit breaker and mainly has the functions of amplifying power of external electric signals and converting the external electric signals into mechanical signals to drive the switching element to act, so that the opening and closing of the circuit breaker are completed. It can be said that the performance of the operating mechanism directly affects the performance characteristics and reliability of the switching on and off of the switching element. The piston rod is an important component of the hydraulic operating mechanism and is an essential key component for realizing the opening and closing operations of the hydraulic operating mechanism.
The existing piston rod guide structure is as follows: the hydraulic mechanism driving unit comprises a working cylinder, a piston rod, a sealing ring and a metal guide ring, wherein the sealing ring and the metal guide ring are arranged on the piston rod, the piston rod is arranged in a working hole of the working cylinder, high-low pressure isolation is realized by the sealing ring on the piston rod, and reciprocating motion of the piston rod is realized by pressure change of a hydraulic system. When the piston rod reciprocates in the working cylinder, a guide structure of the single metal guide ring is adopted, and the guide is realized through the matching between the piston rod and the working cylinder working hole and the single metal guide ring. Such a guide structure has the following problems:
the piston rod guiding is mainly realized by matching the piston rod with the working hole of the working cylinder and a single metal guide ring, so that the processing difficulty of the working cylinder and the piston rod is increased, and the guiding accuracy is low; wear is easily formed in the guiding process of the single metal guide ring, the piston rod is eccentrically worn, the working surface of the working cylinder is damaged, the sealing effect of a hydraulic system is caused, and internal leakage of a hydraulic mechanism is caused.
Therefore, how to provide a piston rod with a dual guiding structure for a hydraulic operating mechanism to achieve the purposes of reducing the processing difficulty of the hydraulic mechanism, improving the guiding precision and reducing the abrasion of a sealing element and a guiding element is a technical problem to be solved urgently by those skilled in the art.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims at providing a hydraulic pressure operating mechanism is with two guide structure piston rods to realize reducing the processing degree of difficulty of hydraulic pressure mechanism, improve the direction precision, reduce sealing member, guide wearing and tearing. The utility model also provides an adopt the hydraulic pressure operating mechanism of above-mentioned hydraulic pressure operating mechanism with two guide structure piston rods.
In order to achieve the above object, the utility model provides a following technical scheme:
a piston rod with double guide structures for a hydraulic operating mechanism comprises a working cylinder, a piston rod, a first guide belt, a second guide belt and a sealing ring, wherein,
the piston rod is arranged in the working cylinder in a sliding mode, a piston is arranged on the piston rod, a first annular groove, a second annular groove and a third annular groove are sequentially formed in the piston, the first guide belt is arranged in the first annular groove, the sealing ring is arranged in the second annular groove, and the second guide belt is arranged in the third annular groove.
Preferably, the width of the first guide belt is smaller than the width of the second guide belt.
Preferably, the first annular groove and the third annular groove are both rectangular grooves, and the first guide belt and the second guide belt are both rectangular rings.
Preferably, the first guide belt and the second guide belt are provided with oblique notches.
Preferably, the first guide belt and the second guide belt are made of polytetrafluoroethylene.
Preferably, the seal ring is made of rubber.
The utility model also provides a hydraulic pressure operating mechanism, include as above-mentioned arbitrary one hydraulic pressure operating mechanism with two guide structure piston rods.
Preferably, the sealing ring realizes isolation of high pressure and low pressure in the working cylinder.
The utility model provides a piston rod with double guide structures for a hydraulic operating mechanism, which comprises a working cylinder, a piston rod, a first guide belt, a second guide belt and a sealing ring, wherein,
the piston rod is arranged in the working cylinder in a sliding mode, a piston is arranged on the piston rod, a first annular groove, a second annular groove and a third annular groove are sequentially formed in the piston, the first guide belt is arranged in the first annular groove, the sealing ring is arranged in the second annular groove, and the second guide belt is arranged in the third annular groove.
The utility model provides a hydraulic pressure operating mechanism is with two guide structure piston rods improves on the basis of the current guide structure of piston rod, replaces the metal guide ring with the second guidance tape, realizes the piston rod direction. Meanwhile, a first guide belt is added to provide a pre-guide function for the piston rod, so that the guide precision of the piston rod in the movement process is improved. The pre-guiding function is added, the processing difficulty of the piston rod is reduced, the guiding precision is improved, meanwhile, the abrasion of the piston rod and a guiding belt thereof is greatly reduced, and the poor sealing condition of a hydraulic system caused by eccentric wear of the piston rod is effectively solved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural view of a piston rod with a dual guiding structure for a hydraulic operating mechanism according to an embodiment of the present invention.
In the above FIG. 1:
the hydraulic cylinder comprises a working cylinder 1, a piston rod 2, a second guide belt 3, a first guide belt 4 and a sealing ring 5.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. 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, fig. 1 is a schematic structural diagram of a piston rod with a dual guiding structure for a hydraulic operating mechanism according to an embodiment of the present invention.
The double-guide structure piston rod for the hydraulic operating mechanism provided by the embodiment of the utility model comprises a working cylinder 1, a piston rod 2, a first guide belt 4, a second guide belt 3 and a sealing ring 5, wherein,
the piston rod 2 is arranged in the working cylinder 1 in a sliding mode, namely the piston rod 2 is assembled in a working hole of the working cylinder 1 and reciprocates in the working cylinder 1, a piston is arranged on the piston rod 2, a first annular groove, a second annular groove and a third annular groove are sequentially formed in the piston, a first guide belt 4 is arranged in the first annular groove, a sealing ring 5 is arranged in the second annular groove, and a second guide belt 3 is arranged in the third annular groove.
The embodiment of the utility model provides a hydraulic pressure operating mechanism is with two guide structure piston rods improves on the basis of the current guide structure of piston rod 2, replaces the metal guide ring with second guidance tape 3, realizes the 2 direction of piston rod. Meanwhile, a first guide belt 4 is added to provide a pre-guide function for the piston rod 2, so that the guide precision of the piston rod 2 in the motion process is improved. The pre-guiding function is added, the processing difficulty of the piston rod 2 is reduced, the guiding precision is improved, meanwhile, the abrasion of the piston rod 2 and a guiding belt thereof is greatly reduced, and the poor sealing condition of a hydraulic system caused by eccentric wear of the piston rod 2 is effectively solved.
Specifically, the width of the first guide belt 4 is smaller than the width of the second guide belt 3. The first annular groove and the third annular groove are both rectangular grooves, and the first guide belt 4 and the second guide belt 3 are both rectangular rings. All be provided with the scarf on first guidance tape 4 and the second guidance tape 3, be convenient for install. The first guide belt 4 and the second guide belt 3 are made of polytetrafluoroethylene materials. The seal ring 5 is made of rubber.
The embodiment of the utility model provides a hydraulic pressure operating mechanism is still provided, include as above-mentioned any one embodiment hydraulic pressure operating mechanism uses two guide structure piston rods. Wherein, the seal ring 5 realizes the isolation of high and low pressure in the working cylinder 1.
The embodiment of the utility model provides a hydraulic pressure operating mechanism is with two guide structure piston rods installs in working hole of working cylinder 1, utilizes hydraulic system pressure variation to realize 2 reciprocating motion of piston rod, and then accomplishes the divide-shut brake operation of hydraulic pressure mechanism. Meanwhile, the guide is realized through the matching between the piston rod 2 and the working hole of the working cylinder 1 and the guide belt.
The embodiment of the utility model provides a hydraulic pressure operating mechanism is with two guide structure piston rods is on the basis of 2 current guide structure of piston rod, adopts a rectangle ring polytetrafluoroethylene direction that is provided with the scarf to bring and improves, replaces the metal guide ring with wide polytetrafluoroethylene guide band, realizes 2 direction of piston rod. Meanwhile, a narrow polytetrafluoroethylene guide belt is added to provide a pre-guide function for the piston rod 2, and the original single-metal guide structure of the piston rod 2 is changed into a double-polytetrafluoroethylene guide structure, so that the guide precision of the piston rod 2 in the motion process is improved. The guide belt and the sealing ring 5 are arranged on the piston rod of the double-guide structure, and a wide guide belt and a narrow guide belt are distributed on two sides of the sealing ring 5. Therefore, the piston rod 2 is changed from the original single metal guide structure to the double polytetrafluoroethylene guide structure, the processing difficulty of the piston rod 2 is reduced, the guide precision is improved, meanwhile, the abrasion environment of the piston rod 2 and the guide belt thereof is greatly improved, and the poor sealing condition of a hydraulic system caused by the abrasion of the piston rod 2 is effectively solved.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (8)
1. A piston rod with double guide structures for a hydraulic operating mechanism is characterized by comprising a working cylinder, a piston rod, a first guide belt, a second guide belt and a sealing ring, wherein,
the piston rod is arranged in the working cylinder in a sliding mode, a piston is arranged on the piston rod, a first annular groove, a second annular groove and a third annular groove are sequentially formed in the piston, the first guide belt is arranged in the first annular groove, the sealing ring is arranged in the second annular groove, and the second guide belt is arranged in the third annular groove.
2. The dual guide structure piston rod for a hydraulic actuator according to claim 1, wherein the width of said first guide strip is smaller than the width of said second guide strip.
3. The dual guidance structure piston rod for a hydraulic operating mechanism according to claim 1, wherein the first annular groove and the third annular groove are both rectangular grooves, and the first guidance tape and the second guidance tape are both rectangular rings.
4. The dual guide structure piston rod for a hydraulic operating mechanism according to claim 1, wherein the first guide strip and the second guide strip are provided with a bevel cut.
5. The dual-guiding structure piston rod for the hydraulic operating mechanism according to claim 1, wherein the first guiding strip and the second guiding strip are made of teflon.
6. The dual-guiding structure piston rod for the hydraulic operating mechanism according to claim 1, wherein the sealing ring is made of rubber.
7. A hydraulic actuator comprising a dual-pilot structure piston rod for a hydraulic actuator according to any one of claims 1 to 6.
8. The hydraulic operating mechanism of claim 7, wherein the seal ring provides high and low pressure isolation in the working cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922381660.XU CN211174869U (en) | 2019-12-26 | 2019-12-26 | Hydraulic operating mechanism and double-guide-structure piston rod thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201922381660.XU CN211174869U (en) | 2019-12-26 | 2019-12-26 | Hydraulic operating mechanism and double-guide-structure piston rod thereof |
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| CN211174869U true CN211174869U (en) | 2020-08-04 |
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| CN201922381660.XU Active CN211174869U (en) | 2019-12-26 | 2019-12-26 | Hydraulic operating mechanism and double-guide-structure piston rod thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022088418A1 (en) * | 2020-10-26 | 2022-05-05 | 平高集团有限公司 | Hydraulic control valve, hydraulic operating mechanism using hydraulic control valve, and circuit breaker |
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2019
- 2019-12-26 CN CN201922381660.XU patent/CN211174869U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022088418A1 (en) * | 2020-10-26 | 2022-05-05 | 平高集团有限公司 | Hydraulic control valve, hydraulic operating mechanism using hydraulic control valve, and circuit breaker |
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