CN112879480B - Hydraulic damping type bidirectional fixed speed controller - Google Patents
Hydraulic damping type bidirectional fixed speed controller Download PDFInfo
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- CN112879480B CN112879480B CN202110288955.1A CN202110288955A CN112879480B CN 112879480 B CN112879480 B CN 112879480B CN 202110288955 A CN202110288955 A CN 202110288955A CN 112879480 B CN112879480 B CN 112879480B
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- inner cylinder
- piston rod
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- 238000013016 damping Methods 0.000 title claims abstract description 24
- 230000002457 bidirectional effect Effects 0.000 title claims abstract description 14
- 239000006260 foam Substances 0.000 claims abstract description 18
- 229910000831 Steel Inorganic materials 0.000 claims description 47
- 239000010959 steel Substances 0.000 claims description 47
- 239000003921 oil Substances 0.000 claims description 13
- 238000007789 sealing Methods 0.000 claims description 13
- 230000000903 blocking effect Effects 0.000 claims description 10
- 230000035939 shock Effects 0.000 claims description 8
- 239000010720 hydraulic oil Substances 0.000 claims description 6
- 238000000034 method Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/10—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using liquid only; using a fluid of which the nature is immaterial
- F16F9/14—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect
- F16F9/16—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts
- F16F9/18—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts with a closed cylinder and a piston separating two or more working spaces therein
- F16F9/19—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts with a closed cylinder and a piston separating two or more working spaces therein with a single cylinder and of single-tube type
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/3207—Constructional features
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/34—Special valve constructions; Shape or construction of throttling passages
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/36—Special sealings, including sealings or guides for piston-rods
- F16F9/368—Sealings in pistons
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/43—Filling or drainage arrangements, e.g. for supply of gas
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Actuator (AREA)
Abstract
The invention relates to a hydraulic damping type bidirectional fixed speed controller, which comprises an end seat, a base, an outer cylinder body, an inner cylinder body, a piston rod and a piston head, wherein a first pipeline which is communicated with a first inner cavity and an outer cavity is arranged on the end seat; the base is provided with a second pipeline which is communicated with the second inner cavity and the outer cavity, and the second pipeline is provided with a second one-way valve which is used for being opened when the piston rod stretches and is blocked when the piston rod compresses; the two ends of the inner cylinder body are respectively provided with a first exciting hole and a second exciting hole, the first exciting hole is communicated with the first inner cavity and the outer cavity, and the second exciting hole is communicated with the second inner cavity and the outer cavity; the second pipeline is communicated with an oil filling port, and a plugging bolt is arranged in the oil filling port; the outer wall of the inner cylinder body and the outer cavity are also sleeved with foam energy accumulators. The hydraulic damping type bidirectional fixed speed controller with the structure has good damping performance, stable and durable structure and meets the application scene of medium-sized loads.
Description
Technical Field
The invention relates to a hydraulic damping type bidirectional fixed speed controller, belongs to the technical field of hydraulic equipment, and is particularly suitable for the field of medium-sized machinery.
Background
The design of the hydraulic damping type bidirectional fixed speed controller is required to meet the requirement of controlling the movement speed of mechanical equipment in the range of the stroke of a piston rod, realizing stable and controllable mechanical operation, and has certain requirements on hydraulic pressure aiming at the field of medium-sized machinery, and the hydraulic damping type bidirectional fixed speed controller is usually required to provide good damping performance in a shorter stroke so as to ensure that a good damping protection effect is obtained in a medium-sized load application scene. Therefore, the requirement on the damper, namely the speed controller, is high, and not only good damping is required, but also the structure is required to be stable and durable. And thus, a redesign is necessary.
Disclosure of Invention
The invention aims to provide a hydraulic damping type bidirectional fixed speed controller which has good damping performance, is stable and durable in structure and can meet the application scene of medium-sized loads.
The hydraulic damping type bidirectional fixed speed controller comprises an end seat, a base, an outer cylinder body, an inner cylinder body, a piston rod and a piston head fixed at one end of the piston rod, wherein the end seat and the base are fixed at two ends of the outer cylinder body and the inner cylinder body in a sealing way, the inner cylinder body is fixedly sleeved in the outer cylinder body, an outer cavity is formed between the inner cylinder body and the outer cylinder body, the piston head is arranged in the inner cylinder body in a sliding sealing way, the piston rod passes through the end seat in a sealing way and penetrates through the end seat in a movable way, the piston head divides the inner cylinder body into a first inner cavity close to one side of the end seat and a second inner cavity close to one side of the base,
The end seat is provided with a first pipeline which is communicated with the first inner cavity and the outer cavity, and the first pipeline is provided with a first one-way valve which is used for being blocked when the piston rod stretches and is opened when the piston rod compresses;
the base is provided with a second pipeline which is communicated with the second inner cavity and the outer cavity, and the second pipeline is provided with a second one-way valve which is used for being opened when the piston rod stretches and is blocked when the piston rod compresses;
A first exciting hole and a second exciting hole are respectively arranged at two ends of the inner cylinder body, the first exciting hole is communicated with the first inner cavity and the outer cavity, and the second exciting hole is communicated with the second inner cavity and the outer cavity;
The second pipeline is communicated with an oil filling port, and a blocking bolt is arranged in the oil filling port and used for blocking the oil filling port after hydraulic oil is filled; the outer wall of the inner cylinder body and the outer cavity are also sleeved with foam energy accumulators.
According to a preferred embodiment of the invention, the first check valve comprises a first steel ball accommodating cavity and a first steel ball, wherein the first steel ball accommodating cavity and the first steel ball are arranged near one end of the first inner cavity, the inner diameter of the first steel ball accommodating cavity is larger than the diameter of the first steel ball, and a first baffle plate is fixedly arranged in the first steel ball accommodating cavity and used for limiting the movable space of the first steel ball.
According to a preferred embodiment of the invention, the second check valve comprises a second steel ball accommodating cavity and a second steel ball, wherein the second steel ball accommodating cavity and the second steel ball are arranged near one end of the second inner cavity, the inner diameter of the second steel ball accommodating cavity is larger than the diameter of the second steel ball, and a second baffle plate is fixedly arranged in the second steel ball accommodating cavity and used for limiting the movable space of the second steel ball.
According to a preferred embodiment of the invention, the inner cylinder body is in threaded connection with the end seat and the base respectively and axially abuts against the end seat and the base; the outer cylinder body is respectively in threaded connection with the end seat and the base, one end of the outer cylinder body is axially abutted against the base, the other end of the outer cylinder body is axially abutted against the end cover, and the end cover is in threaded connection with the end part of the end seat.
According to a preferred embodiment of the present invention, sealing rings are provided at the respective positions between the piston head and the inner cylinder, between the piston rod and the end seat, between the end seat and the inner cylinder, between the end seat and the outer cylinder, between the base and the inner cylinder, and between the base and the outer cylinder.
According to a preferred embodiment of the invention, a wear ring is also sleeved between the piston head and the inner cylinder.
According to a preferred embodiment of the invention, the foam energy accumulator is sleeved between the first exciting hole and the second exciting hole, a first guide plate is arranged between the first exciting hole and the foam energy accumulator, and a first check ring is arranged between the first exciting hole and the first guide plate; a second baffle is arranged between the second shock hole and the foam energy accumulator, and a second check ring is arranged between the second shock hole and the second baffle; the first check ring and the second check ring are nested on the outer wall of the inner cylinder body and used for limiting the axial movement of the first guide plate, the second guide plate and the foam energy accumulator.
According to a preferred embodiment of the invention, the radial width of the first retaining ring, the second retaining ring, the first deflector and the second deflector suit is smaller than the radial width of the outer chamber.
On the basis of the common general knowledge in the field, the above preferred embodiments can be arbitrarily combined to obtain each preferred embodiment of the invention.
The invention relates to a hydraulic damping type bidirectional fixed speed controller, which comprises an end seat, a base, an outer cylinder body, an inner cylinder body, a piston rod and a piston head fixed at one end of the piston rod, wherein the end seat and the base are fixed at two ends of the outer cylinder body and the inner cylinder body in a sealing way; the base is provided with a second pipeline which is communicated with the second inner cavity and the outer cavity, and the second pipeline is provided with a second one-way valve which is used for being opened when the piston rod stretches and is blocked when the piston rod compresses; the two ends of the inner cylinder body are respectively provided with a first exciting hole and a second exciting hole, the first exciting hole is communicated with the first inner cavity and the outer cavity, and the second exciting hole is communicated with the second inner cavity and the outer cavity; the second pipeline is communicated with an oil filling port, and a blocking bolt is arranged in the oil filling port and used for blocking the oil filling port after hydraulic oil is filled; the outer wall of the inner cylinder body and the outer cavity are also sleeved with foam energy accumulators. When the piston rod stretches, the first one-way valve blocks the first pipeline, the second one-way valve is opened, hydraulic oil in the first inner cavity flows into the outer cavity through the first shock hole and flows to the second inner cavity through the second shock hole and the second pipeline; when the piston rod is compressed, the first one-way valve opens the first pipeline, the second one-way valve blocks the second pipeline, and hydraulic oil in the second inner cavity flows into the outer cavity through the second shock hole and flows to the first inner cavity through the first shock hole and the first pipeline. The hydraulic damping type bidirectional fixed speed controller with the structure has good damping performance, stable and durable structure and meets the application scene of medium-sized loads.
For a better understanding of the above and other objects, features, advantages and functions of the present invention, reference should be made to the preferred embodiments illustrated in the accompanying drawings. It will be appreciated by persons skilled in the art that the drawings are intended to schematically illustrate preferred embodiments of the invention and that the scope of the invention is not limited in any way by the drawings, and that the various components are not drawn to scale.
Drawings
For a better understanding of the above and other objects, features, advantages and functions of the present invention, reference should be made to the preferred embodiments illustrated in the accompanying drawings. It will be appreciated by persons skilled in the art that the drawings are intended to schematically illustrate preferred embodiments of the invention and that the scope of the invention is not limited in any way by the drawings, and that the various components are not drawn to scale.
Fig. 1 is a schematic diagram of a hydraulic damping type bi-directional fixed speed controller according to a preferred embodiment of the present invention.
Reference numerals illustrate:
An end seat 1; a base 2; an outer cylinder 3; an inner cylinder 4; a piston rod 5; a piston head 6; an outer cavity 7; a first lumen 8a; a second lumen 8b; a first conduit 9; a first one-way valve 10; a second pipeline 11; a second one-way valve 12; a first laser aperture 13; a second laser aperture 14; an oil filling port 15; plugging the bolts 16; a foam accumulator 17; a first steel ball accommodating chamber 10a; a first steel ball 10b; a first baffle 10c; a second steel ball accommodating chamber 12a; a second steel ball 12b; a second baffle 12c; an end cap 18; a wear ring 19; a first baffle 20; a first retainer ring 21; a second baffle 22; a second retainer ring 23; end cap 24.
Detailed Description
The invention is described in further detail below with reference to the drawings and examples. Reference will now be made in detail to the preferred embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The embodiments described in the following preferred embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely preferred devices and methods consistent with some aspects of the invention as detailed in the accompanying claims, and other ways of implementing the invention that would occur to one skilled in the art on the basis of the preferred embodiments are intended to fall within the scope of the invention. In the following detailed description, directional terms, such as "upper", "lower", "inner", "outer", "longitudinal", "transverse", etc., are used with reference to the directions described in the drawings. Components of embodiments of the present invention may be positioned in different orientations and the directional terminology is used for purposes of illustration and is in no way limiting.
As shown in fig. 1, a hydraulic damping type bidirectional fixed speed controller comprises an end seat 1, a base 2, an outer cylinder 3, an inner cylinder 4, a piston rod 5 and a piston head 6 fixed at one end of the piston rod 5, wherein the end seat 1, the base 2 are fixed at two ends of the outer cylinder 3 and the inner cylinder 4 in a sealing manner, the inner cylinder 4 is fixedly sleeved in the outer cylinder 3, an outer cavity 7 is formed between the inner cylinder 4 and the outer cylinder 3, the piston head 6 is arranged in the inner cylinder 4 in a sliding sealing manner, the piston rod 5 is sealed through the end seat 1 and movably penetrates through the end seat 1, the piston head 6 divides the inner cylinder 4 into a first inner cavity 8a close to one side of the end seat 1 and a second inner cavity 8b close to one side of the base 2, a first pipeline 9 which is communicated with the first inner cavity 8a and the outer cavity 7 is arranged on the end seat 1, and a first one-way valve 10 is arranged on the first pipeline 9 so as to open when the piston rod 5 is compressed when being used for stretching and blocking; the base 2 is provided with a second pipeline 11 which is communicated with the second inner cavity 8b and the outer cavity 7, and the second pipeline 11 is provided with a second one-way valve 12 which is used for being opened when the piston rod 5 stretches and blocked when the piston rod is compressed; a first exciting hole 13 and a second exciting hole 14 are respectively arranged at two ends of the inner cylinder body 4, the first exciting hole 13 is communicated with the first inner cavity 8a and the outer cavity 7, and the second exciting hole 14 is communicated with the second inner cavity 8b and the outer cavity 7; the second pipeline 11 is communicated with an oil filling port 15, and a blocking bolt 16 is arranged in the oil filling port 15 and used for blocking the oil filling port 15 after hydraulic oil is filled; the outer wall of the inner cylinder body 4 and the outer cavity 7 are also sleeved with a foam accumulator 17.
According to the present invention, the first check valve 10 includes a first steel ball accommodating cavity 10a and a first steel ball 10b disposed near one end of the first inner cavity 8a, wherein the inner diameter of the first steel ball accommodating cavity 10a is larger than the diameter of the first steel ball 10b, and a first baffle 10c is fixedly disposed in the first steel ball accommodating cavity 10a for limiting the movable space of the first steel ball 10 b.
According to the present invention, the second check valve 12 includes a second steel ball accommodating cavity 12a and a second steel ball 12b disposed near one end of the second inner cavity 8b, wherein the inner diameter of the second steel ball accommodating cavity 12a is larger than the diameter of the second steel ball 12b, and a second baffle 12c is fixedly disposed in the second steel ball accommodating cavity 12b for limiting the movable space of the second steel ball 12 b.
In this embodiment, the first baffle 10c and the second baffle 12c are fixed by adopting a partial interference fit manner, so that circulation is ensured, the installation and fixation requirements are met, and blocking is avoided. Of course, the first baffle and the second baffle can also be replaced by the form of a fixed inserted stop lever or a stop lever bolt, and the description is omitted.
According to the invention, the inner cylinder body 4 is respectively in threaded connection with the end seat 1 and the base 2 and axially abuts against the end seat; the outer cylinder body 3 is in threaded connection with the end seat 1 and the base 2 respectively, one end of the outer cylinder body 3 is in axial abutting joint with the base 2, the other end of the outer cylinder body is in axial abutting joint with the end cover 18, and the end cover 18 is in threaded connection with the end part of the end seat 1.
According to the invention, sealing rings are respectively arranged between the piston head 6 and the inner cylinder body 4, between the piston rod 5 and the end seat 1, between the end seat 1 and the inner cylinder body 4, between the end seat 1 and the outer cylinder body 3, between the base 2 and the inner cylinder body 4 and between the base 2 and the outer cylinder body 3. The setting of sealing washer is hydraulic pressure field necessary and the technique that just commonly uses, sets up in different positions as required, and specific setting method is unnecessary to describe again.
According to the invention, a wear ring 19 is also provided between the piston head 6 and the inner cylinder body 4.
According to the invention, the foam energy accumulator 17 is sleeved between the first exciting hole 13 and the second exciting hole 14, a first deflector 20 is arranged between the first exciting hole 13 and the foam energy accumulator 17, and a first retainer ring 21 is arranged between the first exciting hole 13 and the first deflector 20; a second baffle 22 is arranged between the second exciting hole 14 and the foam energy accumulator 17, and a second check ring 23 is arranged between the second exciting hole 14 and the second baffle 22; the first check ring 21 and the second check ring 23 are nested on the outer wall of the inner cylinder 4, so as to limit the axial movement of the first deflector 20, the second deflector 22 and the foam accumulator 17.
According to the invention, the radial width of the first retaining ring 21, the second retaining ring 23, the first deflector 20 and the second deflector 22 is smaller than the radial width of the outer chamber 7.
Other embodiments of the application will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein. This application is intended to cover any variations, uses, or adaptations of the application following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice within the art to which the application pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the application being indicated by the following claims.
It is to be understood that the invention is not limited to the precise arrangements and instrumentalities shown in the drawings, which have been described above, and that various modifications and changes may be effected without departing from the scope thereof. The scope of the invention is limited only by the appended claims. The above description is for the purpose of illustrating the embodiments of the present invention and is not to be construed as limiting the invention, but is intended to cover all modifications, equivalents, improvements and alternatives falling within the spirit and principles of the invention.
Claims (5)
1. The hydraulic damping type bidirectional fixed speed controller comprises an end seat, a base, an outer cylinder body, an inner cylinder body, a piston rod and a piston head fixed at one end of the piston rod, wherein the end seat and the base are fixed at the outer cylinder body and two ends of the inner cylinder body in a sealing way, the inner cylinder body is fixedly sleeved in the outer cylinder body, an outer cavity is formed between the inner cylinder body and the outer cylinder body, the piston head is arranged in the inner cylinder body in a sliding sealing way, the piston rod passes through the end seat in a sealing way and penetrates through the end seat in a movable way, the piston head divides the inner cylinder body into a first cavity close to one side of the end seat and a second cavity close to one side of the base,
The end seat is provided with a first pipeline which is communicated with the first inner cavity and the outer cavity, and the first pipeline is provided with a first one-way valve which is used for being blocked when the piston rod stretches and is opened when the piston rod compresses;
the base is provided with a second pipeline which is communicated with the second inner cavity and the outer cavity, and the second pipeline is provided with a second one-way valve which is used for being opened when the piston rod stretches and is blocked when the piston rod compresses;
A first exciting hole and a second exciting hole are respectively arranged at two ends of the inner cylinder body, the first exciting hole is communicated with the first inner cavity and the outer cavity, and the second exciting hole is communicated with the second inner cavity and the outer cavity;
The second pipeline is communicated with an oil filling port, and a blocking bolt is arranged in the oil filling port and used for blocking the oil filling port after hydraulic oil is filled; the outer wall of the inner cylinder body and the outer cavity are also sleeved with foam energy accumulators;
The first check valve comprises a first steel ball accommodating cavity and a first steel ball, wherein the first steel ball accommodating cavity and the first steel ball are arranged near one end of the first inner cavity, the inner diameter of the first steel ball accommodating cavity is larger than the diameter of the first steel ball, and a first baffle is fixedly arranged in the first steel ball accommodating cavity and used for limiting the movable space of the first steel ball;
The foam energy accumulator is sleeved between the first exciting hole and the second exciting hole, a first guide plate is arranged between the first exciting hole and the foam energy accumulator, and a first check ring is arranged between the first exciting hole and the first guide plate; a second baffle is arranged between the second shock hole and the foam energy accumulator, and a second check ring is arranged between the second shock hole and the second baffle; the first check ring and the second check ring are nested on the outer wall of the inner cylinder body and used for limiting the axial movement of the first guide plate, the second guide plate and the foam energy accumulator.
2. The hydraulic damping type bidirectional fixed speed controller according to claim 1, wherein the second check valve comprises a second steel ball accommodating cavity and a second steel ball, the second steel ball accommodating cavity is arranged near one end of the second inner cavity, the inner diameter of the second steel ball accommodating cavity is larger than the diameter of the second steel ball, and a second baffle is fixedly arranged in the second steel ball accommodating cavity and used for limiting the movable space of the second steel ball.
3. The hydraulic damping bi-directional fixed speed controller of claim 1 wherein said inner cylinder is threadably connected to and axially abutted against said end mount and said base, respectively; the outer cylinder body is respectively in threaded connection with the end seat and the base, one end of the outer cylinder body is axially abutted against the base, the other end of the outer cylinder body is axially abutted against the end cover, and the end cover is in threaded connection with the end part of the end seat.
4. A hydraulic damping bi-directional fixed speed controller as defined in claim 3 wherein sealing rings are provided between said piston head and said inner cylinder, between said piston rod and said end mount, between said end mount and said inner cylinder, between said end mount and said outer cylinder, between said base and said inner cylinder, and between said base and said outer cylinder, respectively.
5. The hydraulic damping bi-directional fixed speed controller of claim 1 wherein a wear ring is further sleeved between the piston head and the inner cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110288955.1A CN112879480B (en) | 2021-03-18 | 2021-03-18 | Hydraulic damping type bidirectional fixed speed controller |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110288955.1A CN112879480B (en) | 2021-03-18 | 2021-03-18 | Hydraulic damping type bidirectional fixed speed controller |
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| Publication Number | Publication Date |
|---|---|
| CN112879480A CN112879480A (en) | 2021-06-01 |
| CN112879480B true CN112879480B (en) | 2024-05-28 |
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| CN202110288955.1A Active CN112879480B (en) | 2021-03-18 | 2021-03-18 | Hydraulic damping type bidirectional fixed speed controller |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1317253A (en) * | 1969-04-15 | 1973-05-16 | Mitchell Hydraulics Ltd | Hydraulic dampers |
| GB9622350D0 (en) * | 1996-10-28 | 1997-01-08 | Oleo International Limited | A damper |
| CN111608991A (en) * | 2020-06-19 | 2020-09-01 | 无锡贝朗德精密机械科技有限公司 | Bidirectional speed regulation controller |
| CN111895027A (en) * | 2020-08-07 | 2020-11-06 | 无锡贝朗德精密机械科技有限公司 | Small-size adjustable buffer |
| CN211951294U (en) * | 2020-03-26 | 2020-11-17 | 无锡贝朗德精密机械科技有限公司 | Hydraulic damping type bidirectional adjustable speed controller |
| CN214578526U (en) * | 2021-03-18 | 2021-11-02 | 普力莱(苏州)智能科技有限公司 | Hydraulic damping type bidirectional fixed speed controller |
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2021
- 2021-03-18 CN CN202110288955.1A patent/CN112879480B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1317253A (en) * | 1969-04-15 | 1973-05-16 | Mitchell Hydraulics Ltd | Hydraulic dampers |
| GB9622350D0 (en) * | 1996-10-28 | 1997-01-08 | Oleo International Limited | A damper |
| CN211951294U (en) * | 2020-03-26 | 2020-11-17 | 无锡贝朗德精密机械科技有限公司 | Hydraulic damping type bidirectional adjustable speed controller |
| CN111608991A (en) * | 2020-06-19 | 2020-09-01 | 无锡贝朗德精密机械科技有限公司 | Bidirectional speed regulation controller |
| CN111895027A (en) * | 2020-08-07 | 2020-11-06 | 无锡贝朗德精密机械科技有限公司 | Small-size adjustable buffer |
| CN214578526U (en) * | 2021-03-18 | 2021-11-02 | 普力莱(苏州)智能科技有限公司 | Hydraulic damping type bidirectional fixed speed controller |
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| CN112879480A (en) | 2021-06-01 |
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