CN112460102A - Novel positioning and buffering structure's master cylinder - Google Patents
Novel positioning and buffering structure's master cylinder Download PDFInfo
- Publication number
- CN112460102A CN112460102A CN202011507272.2A CN202011507272A CN112460102A CN 112460102 A CN112460102 A CN 112460102A CN 202011507272 A CN202011507272 A CN 202011507272A CN 112460102 A CN112460102 A CN 112460102A
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- China
- Prior art keywords
- connecting body
- ring
- piston
- inner cavity
- positioning
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000003139 buffering effect Effects 0.000 title claims abstract description 20
- 238000007789 sealing Methods 0.000 claims description 12
- 229910000838 Al alloy Inorganic materials 0.000 claims description 3
- 238000000034 method Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 3
- 238000013016 damping Methods 0.000 abstract description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/20—Other details, e.g. assembly with regulating devices
- F15B15/22—Other details, e.g. assembly with regulating devices for accelerating or decelerating the stroke
- F15B15/227—Other details, e.g. assembly with regulating devices for accelerating or decelerating the stroke having an auxiliary cushioning piston within the main piston or the cylinder end face
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1409—Characterised by the construction of the motor unit of the straight-cylinder type with two or more independently movable working pistons
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
- F15B15/1438—Cylinder to end cap assemblies
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
- F15B15/1447—Pistons; Piston to piston rod assemblies
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
- F15B15/1447—Pistons; Piston to piston rod assemblies
- F15B15/1452—Piston sealings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/149—Fluid interconnections, e.g. fluid connectors, passages
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/20—Other details, e.g. assembly with regulating devices
- F15B15/22—Other details, e.g. assembly with regulating devices for accelerating or decelerating the stroke
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/20—Other details, e.g. assembly with regulating devices
- F15B15/24—Other details, e.g. assembly with regulating devices for restricting the stroke
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluid-Damping Devices (AREA)
Abstract
The invention discloses a master cylinder with a novel positioning and buffering structure, and belongs to the technical field of hydraulic cylinders. The bottom of the right end of the cylinder barrel is connected with a connector, and the inner cavity of the connector is communicated with the rodless cavity of the cylinder barrel; a buffer piston is arranged in the inner cavity of the connector in a sliding fit manner, and a positioning clamping key fixed on the inner wall of the inner cavity of the connector is arranged on the left side of the buffer piston; a piston rod column is fixed at the inner end of the piston rod and is opposite to the buffer piston; the bottom of the inner cavity of the connecting body is filled with gas, and the bottom of the right end of the connecting body is provided with a gas port communicated with the inner cavity of the connecting body on the right side of the buffer piston. The functions of buffering, damping, positioning and piston backspacing are all realized by the structure of the connector part, and other devices are not needed to be added, so that the structure is simplified, and the space occupation is reduced; the buffer piston is matched with the retraction positioning part of the piston rod, so that vibration caused by positioning contact is avoided; the buffer effect required by the working condition is obtained by adjusting the volume of the gas cavity and the initial pressure of the charged gas.
Description
Technical Field
The invention relates to the technical field of hydraulic cylinders, in particular to a master cylinder with a novel positioning and buffering structure.
Background
In the industry at present, hydraulic positioning and buffering structures of a piston rod of a pumping main oil cylinder are respectively realized through different structures and modules, and the positioning part at the tail end of the piston rod does not have buffering capacity. There is a large shock and vibration when the end of the piston rod contacts the locating surface.
Disclosure of Invention
In order to solve the technical problems, the invention provides a master cylinder with a novel positioning and buffering structure.
The invention is realized by the following technical scheme: a master cylinder with a novel positioning and buffering structure comprises a cylinder barrel and a piston rod; the bottom of the right end of the cylinder barrel is connected with a connector, and an inner cavity of the connector is communicated with a rodless cavity of the cylinder barrel; a buffer piston is arranged in the inner cavity of the connecting body in a sliding fit manner, and a positioning clamping key fixed on the inner wall of the inner cavity of the connecting body is arranged on the left side of the buffer piston; a piston rod column is fixed at the inner end of the piston rod and is opposite to the buffer piston; the bottom of the inner cavity of the connecting body is filled with gas, and the bottom of the right end of the connecting body is provided with a gas port communicated with the inner cavity of the connecting body on the right side of the buffer piston.
It further comprises the following steps: the connecting body is cylindrical, an outer spigot is arranged at the left end of the connecting body, and the right end of the cylinder barrel is arranged in the outer spigot at the left end of the connecting body in a matching manner; the inner cavity of the connecting body and the rodless cavity of the cylinder barrel are coaxial.
The buffering piston is made of aluminum alloy, and a sealing device guide device is arranged between the circumferential surface of the buffering piston and the inner wall of the inner cavity of the connecting body.
The sealing device guiding device comprises a sealing ring arranged in the middle of the circumferential surface of the buffer piston and guiding rings arranged on two sides of the sealing ring.
The oil port of the rodless cavity of the cylinder barrel is arranged on the connecting body.
The positioning clamp key comprises a first ring, a second ring and a third ring; the first ring and the third ring are respectively arranged in two mounting grooves on the inner wall of the inner cavity of the connecting body, and the third ring is close to one side of the buffer piston; the second ring is clamped between the first ring and the third ring, the section of the second ring is L-shaped, and the second ring is half wrapped on the third ring.
Compared with the prior art, the invention has the beneficial effects that: the functions of buffering, damping, positioning and piston backspacing are all realized by the structure of the connector part, and other devices are not needed to be added, so that the structure is simplified, and the space occupation is reduced; the buffer piston is matched with the retraction positioning part of the piston rod, so that vibration caused by positioning contact is avoided; the buffer effect required by the working condition is obtained by adjusting the volume of the gas cavity and the initial pressure of the charged gas.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an enlarged view of the connecting body;
in the figure: the piston rod comprises a piston rod column 1, a positioning clamp key 2, a first ring 2-1, a second ring 2-2, a third ring 2-3, a buffer piston 3, gas 4, a connecting body 5, a gas port 6, a cylinder barrel 7 and a piston rod 8.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 and 2, a master cylinder with a novel positioning and buffering structure comprises a cylinder barrel 7 and a piston rod 8. The connector 5 is cylindrical, an outer spigot is arranged at the left end of the connector 5, and the right end of the cylinder barrel 7 is installed in the outer spigot at the left end of the connector 5 in a matching mode. The oil port of the rodless cavity of the cylinder barrel 7 is arranged on the connecting body 5. The inner cavity of the connecting body 5 is communicated with the rodless cavity of the cylinder barrel 7, and the inner cavity of the connecting body 5 is coaxial with the rodless cavity of the cylinder barrel 7.
The buffer piston 3 is installed in the inner cavity of the connecting body 5 in a sliding fit mode, and the left side of the buffer piston 3 is located through the locating clamp key 2. The buffer piston 3 is made of aluminum alloy, and a sealing device guide device is arranged between the circumferential surface of the buffer piston 3 and the inner wall of the inner cavity of the connecting body 5. The sealing device guiding device comprises a sealing ring arranged in the middle of the circumferential surface of the buffer piston 3 and guiding rings arranged on two sides of the sealing ring.
The bottom of the inner cavity of the connecting body 5 is filled with gas 4, and the bottom of the right end of the connecting body 5 is provided with a gas port 6 communicated with the inner cavity of the connecting body 5 at the right side of the buffer piston 3. The inner end of the piston rod 8 is fixed with a piston rod column 1, the piston rod column 1 is opposite to the buffer piston 3, and when the piston rod 8 retracts, the piston rod column 1 pushes the buffer piston 3.
The detent key 2 includes a first ring 2-1, a second ring 2-2, and a third ring 2-3. The first ring 2-1 and the third ring 2-3 are respectively arranged in two mounting grooves on the inner wall of the inner cavity of the connecting body 5, and the third ring 2-3 is close to one side of the buffer piston 3. The second ring 2-2 is clamped between the first ring 2-1 and the third ring 2-3, the section of the second ring 2-2 is L-shaped, and the second ring 2-2 is half-wrapped on the third ring 2-3.
The working principle is as follows:
when the retraction stroke of the piston rod 8 is finished, the tail end of the piston rod column 1 contacts the left end face of the buffer piston 3, and the buffer piston is continuously pushed to move rightwards, so that the gas 4 in the connecting body is compressed until the speed of the piston rod is static to zero. At this time, a certain space distance exists between the buffer piston and the bottom of the connecting body. The moving distance of the buffer piston is a buffer distance, and the distance size can be controlled by adjusting the volume of the air cavity and the initial pressure of the air so as to obtain different buffer effects;
when the piston rod 8 starts to extend from a rest state, the buffer piston 3 moves to the left to the position of the positioning clamp key 2 to stop under the pushing of the expansion force of the gas 4;
when the piston rod 8 needs to retract to the bottom of the connecting body, the control system releases air through the air port 6, and the piston rod 8 pushes the buffer piston 3 to retract to the bottom of the connecting body 5 under the oil pressure of the rod cavity.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. A master cylinder with a novel positioning and buffering structure comprises a cylinder barrel (7) and a piston rod (8); the method is characterized in that: the bottom of the right end of the cylinder barrel (7) is connected with a connecting body (5), and the inner cavity of the connecting body (5) is communicated with the rodless cavity of the cylinder barrel (7); a buffer piston (3) is arranged in the inner cavity of the connecting body (5) in a sliding fit manner, and a positioning clamp key (2) fixed on the inner wall of the inner cavity of the connecting body (5) is arranged on the left side of the buffer piston (3); a piston rod column (1) is fixed at the inner end of the piston rod (8), and the piston rod column (1) is opposite to the buffer piston (3); the bottom of the inner cavity of the connecting body (5) is filled with gas (4), and the bottom of the right end of the connecting body (5) is provided with a gas port (6) communicated with the inner cavity of the connecting body (5) on the right side of the buffering piston (3).
2. The main oil cylinder with the novel positioning and buffering structure as claimed in claim 1, wherein: the connecting body (5) is cylindrical, an outer spigot is arranged at the left end of the connecting body (5), and the right end of the cylinder barrel (7) is installed in the outer spigot at the left end of the connecting body (5) in a matching manner; the inner cavity of the connecting body (5) and the rodless cavity of the cylinder barrel (7) are coaxial.
3. The main oil cylinder with the novel positioning and buffering structure as claimed in claim 1, wherein: the buffer piston (3) is made of aluminum alloy, and a sealing device guide device is arranged between the circumferential surface of the buffer piston (3) and the inner wall of the inner cavity of the connecting body (5).
4. The master cylinder with the novel positioning and buffering structure as claimed in claim 3, wherein: the sealing device guiding device comprises a sealing ring arranged in the middle of the circumferential surface of the buffer piston (3) and guiding rings arranged on two sides of the sealing ring.
5. The main oil cylinder with the novel positioning and buffering structure as claimed in claim 1, wherein: the oil port of the rodless cavity of the cylinder barrel (7) is formed in the connecting body (5).
6. The main oil cylinder with the novel positioning and buffering structure as claimed in claim 1, wherein: the positioning clamp key (2) comprises a first ring (2-1), a second ring (2-2) and a third ring (2-3); the first ring (2-1) and the third ring (2-3) are respectively arranged in two mounting grooves on the inner wall of the inner cavity of the connecting body (5), and the third ring (2-3) is close to one side of the buffer piston (3); the second ring (2-2) is clamped between the first ring (2-1) and the third ring (2-3), the section of the second ring (2-2) is L-shaped, and the second ring (2-2) is half wrapped on the third ring (2-3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011507272.2A CN112460102A (en) | 2020-12-18 | 2020-12-18 | Novel positioning and buffering structure's master cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011507272.2A CN112460102A (en) | 2020-12-18 | 2020-12-18 | Novel positioning and buffering structure's master cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112460102A true CN112460102A (en) | 2021-03-09 |
Family
ID=74803068
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011507272.2A Pending CN112460102A (en) | 2020-12-18 | 2020-12-18 | Novel positioning and buffering structure's master cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112460102A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115163604A (en) * | 2022-05-23 | 2022-10-11 | 马鞍山市天成液压机械制造有限公司 | Vibration reduction hydraulic cylinder with buffering capacity |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08135609A (en) * | 1994-11-04 | 1996-05-31 | Toyota Auto Body Co Ltd | Single-acting type hydraulic cylinder |
| CN201687797U (en) * | 2010-06-01 | 2010-12-29 | 湖南特力液压有限公司 | Hydraulic cylinder with buffer unit |
| CN203394924U (en) * | 2013-08-12 | 2014-01-15 | 成都创磊机械有限公司 | Novel connecting device for oil cylinder piston |
| CN204664021U (en) * | 2015-05-25 | 2015-09-23 | 象山融合流体技术有限公司 | A kind of high speed hydraulic cylinder with pooling feature |
-
2020
- 2020-12-18 CN CN202011507272.2A patent/CN112460102A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08135609A (en) * | 1994-11-04 | 1996-05-31 | Toyota Auto Body Co Ltd | Single-acting type hydraulic cylinder |
| CN201687797U (en) * | 2010-06-01 | 2010-12-29 | 湖南特力液压有限公司 | Hydraulic cylinder with buffer unit |
| CN203394924U (en) * | 2013-08-12 | 2014-01-15 | 成都创磊机械有限公司 | Novel connecting device for oil cylinder piston |
| CN204664021U (en) * | 2015-05-25 | 2015-09-23 | 象山融合流体技术有限公司 | A kind of high speed hydraulic cylinder with pooling feature |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115163604A (en) * | 2022-05-23 | 2022-10-11 | 马鞍山市天成液压机械制造有限公司 | Vibration reduction hydraulic cylinder with buffering capacity |
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|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210309 |