CN113007263A - Buffer device - Google Patents
Buffer device Download PDFInfo
- Publication number
- CN113007263A CN113007263A CN202110254251.2A CN202110254251A CN113007263A CN 113007263 A CN113007263 A CN 113007263A CN 202110254251 A CN202110254251 A CN 202110254251A CN 113007263 A CN113007263 A CN 113007263A
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- CN
- China
- Prior art keywords
- buffer
- piston rod
- oil
- sleeve
- piston
- Prior art date
- 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
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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
- F16F13/00—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs
- F16F13/005—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a wound spring and a damper, e.g. a friction damper
- F16F13/007—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a wound spring and a damper, e.g. a friction damper the damper being a fluid damper
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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
- F16F2222/00—Special physical effects, e.g. nature of damping effects
- F16F2222/12—Fluid damping
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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
- F16F2222/00—Special physical effects, e.g. nature of damping effects
- F16F2222/12—Fluid damping
- F16F2222/126—Fluid damping using gases
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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
- F16F2230/00—Purpose; Design features
- F16F2230/0041—Locking; Fixing in position
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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
- F16F2230/00—Purpose; Design features
- F16F2230/06—Fluid filling or discharging
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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
- F16F2230/00—Purpose; Design features
- F16F2230/30—Sealing arrangements
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Fluid-Damping Devices (AREA)
Abstract
The invention discloses a buffer, a piston rod penetrates through the interior of a buffer body, when an external device acts on the end part of the piston rod, the piston rod drives a piston to move in an oil cavity, an annular gap is arranged between the piston and the inner side wall of the buffer body, oil positioned on one side of the oil cavity enters the other side of the oil cavity under the pressure of the piston along with the movement of the piston, the transfer of the oil counteracts partial impact force of the external device to buffer the external device, the piston rod moves under the pressure and drives a buffer sleeve to move in an air cavity, and compresses a buffer spring, the impact force of the external device is counteracted by the compression of the air in the air cavity and the compression of the buffer spring, and finally the kinetic energy of the external device is converted into heat energy to be dissipated. The running device is effectively buffered.
Description
Technical Field
The invention relates to the technical field of buffers, in particular to a buffer.
Background
The buffer is used for buffering vibration and noise generated by impact, can reduce the vibration and the noise in the operation of automatic machinery, can convert kinetic energy generated by an object in motion into heat energy and release the heat energy into the atmosphere, and can balance and effectively stop the object in motion, so that the buffer is widely applied to large-scale stamping and forging processing occasions. The buffer plays a role of protecting the operation device in various operation devices; however, because the running device is always impacted at full speed, the existing buffer can not be decelerated and braked in time, so that the load is overlarge during impact, and the running device and the buffer are both damaged unnecessarily.
Disclosure of Invention
The present invention is directed to a buffer to solve the above mentioned problems.
A buffer, comprising:
the buffer comprises a buffer body, wherein a piston rod penetrates through the buffer body, a piston is fixedly connected onto the piston rod and is positioned in an oil cavity in the buffer body, one end of the buffer body is communicated with an air cavity, a first one-way valve is arranged on the bottom wall of the air cavity, one end of the piston rod is positioned in the air cavity and is connected with a buffer sleeve, a buffer spring is arranged between the buffer sleeve and the bottom wall of the air cavity, compressed air is filled into the air cavity through the first one-way valve, the oil cavity, the air cavity and the buffer spring jointly play a buffer role in pressure transmitted by the piston rod, when an external device acts on the end part of the piston rod, the piston rod drives the piston to move in the oil cavity, and an annular gap is formed between the piston and the inner side wall of the buffer body, along with the movement of the piston, oil positioned on one side of the oil cavity enters the other side of the oil cavity under the compression of the piston, the transfer of the oil counteracts partial impact force of an external device to buffer the external device, the piston rod is pressed to move and simultaneously drives the buffer sleeve to move in the air cavity and compress the buffer spring, the impact force of the external device is counteracted by the compression of the gas in the air cavity and the compression of the buffer spring, and finally the kinetic energy of the external device is converted into heat energy to be dissipated.
Furthermore, the piston rod is movably connected with the buffer sleeve, compressible gas is arranged in the buffer sleeve, when an external device acts on the end portion of the piston rod, the piston rod is pressed to move and simultaneously drives the buffer sleeve to move in the air cavity, the buffer spring is compressed, the gas in the air cavity is compressed, the buffer spring is compressed, impact force of the external device is offset, the piston rod has certain displacement in the buffer sleeve, the gas in the buffer sleeve is compressed to a certain degree, and the impact force of the external device is further offset by the arrangement of the buffer sleeve.
Furthermore, an oil inlet channel and a second one-way valve connected with the oil inlet channel are arranged on the side wall of the buffer body, an oil outlet end of the oil inlet channel is communicated with the oil cavity, hydraulic oil is input into the oil inlet channel through the second one-way valve, and enters the oil cavity along the oil inlet channel so as to finish oil filling of the oil cavity.
Further, be provided with pressure adjustment passageway on the lateral wall of buffer body and with the needle valve that pressure adjustment passageway is connected, pressure adjustment passageway's tip with the oil pocket is linked together, the needle valve is used for adjusting compressible degree in the oil pocket, through the needle valve is adjusted compressible degree in the oil pocket is convenient from this right the buffering degree of buffer body is adjusted, according to external device buffering needs, adjusts the needle valve makes the compressible degree in the oil pocket is big, then the piston rod easily pushes down, adjusts the needle valve makes compressible degree is little in the oil pocket, then the piston rod is difficult for pushing down.
Further, the top of piston rod is located the outside of buffer body and fixed cover are equipped with the buffer pressure head, buffer pressure head and outside are treated buffer and are contacted and transmit pressure, the setting of buffer pressure head is used for the protection the tip of piston rod, the removable and bearing area of buffer pressure head is greater than the piston rod.
Furthermore, a fixed sleeve is arranged at the opening of the buffer body, the piston rod is positioned on the inner side of the fixed sleeve and is in sliding connection with the fixed sleeve, the fixed sleeve is convenient to be arranged and is connected with the opening of the buffer body, and the fixed sleeve can keep the piston rod to move freely on the premise of not influencing the sealing performance of the buffer body.
Furthermore, a sealing element is arranged at the contact position of the fixed sleeve and the buffer body and used for sealing a connecting gap between the fixed sleeve and the buffer body, and the sealing element can effectively prevent hydraulic oil in the oil cavity from leaking.
Further, the sealing member is a sealing ring, the sealing ring is fixedly bonded with the inner side wall of the buffer body and the outer side wall of the fixed sleeve, the sealing ring is convenient to bond with the inner side wall of the buffer body and the outer side wall of the fixed sleeve, and hydraulic oil in the oil cavity can be effectively prevented from leaking.
Furthermore, be provided with the external screw thread on the lateral wall of adapter sleeve, threaded connection has the gland on the adapter sleeve, the gland seal in the outside of sealing member, the setting of gland further prevents hydraulic oil in the oil pocket leaks.
Furthermore, a fixing base is fixedly assembled at the end part of the buffer body, the air cavity is communicated with and arranged on the fixing base, an assembling hole is formed in the fixing base, the fixing base is arranged to be connected with the installation plane, and the fixing base can integrally fix the buffer on the installation plane so as to buffer an external mobile device.
Compared with the prior art, the invention has the beneficial effects that: a piston rod penetrates through the interior of the buffer body, a piston is fixedly connected to the piston rod and is positioned in an oil cavity in the buffer body, an air cavity is communicated with one end of the buffer body, a first one-way valve is arranged on the bottom wall of the air cavity, one end of the piston rod is positioned in the air cavity and is connected with a buffer sleeve, a buffer spring is arranged between the buffer sleeve and the bottom wall of the air cavity, compressed air is filled into the air cavity from the first one-way valve, the oil cavity, the air cavity and the buffer spring jointly play a buffer role in buffering pressure transmitted by the piston rod, when an external device acts on the end part of the piston rod, the piston rod drives the piston to move in the oil cavity, an annular gap is formed between the piston and the inner side wall of the buffer body, oil positioned on one side of the oil cavity is pressed by the piston to enter the other, the buffer device has the advantages that the buffer device is integrated with hydraulic pressure, air pressure and a spring, can effectively decelerate and brake the external device in time to bear larger impact load, and has an effective buffer effect on the running device.
Drawings
FIG. 1 is a sectional view of the main structure of the present invention;
FIG. 2 is an enlarged view of the point A in FIG. 1 according to the present invention.
In the figure: 1-a buffer body, 2-a piston rod, 3-a piston, 4-an air cavity, 5-a first one-way valve, 6-a buffer sleeve, 7-a buffer spring, 8-an oil cavity, 9-an oil inlet channel, 10-a second one-way valve, 11-a pressure adjusting channel, 12-a needle valve, 13-a buffer pressure head, 14-a fixed sleeve, 15-a sealing element, 16-a gland and 17-a fixed base.
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.
Referring to fig. 1-2, the present invention provides a technical solution: a kind of buffer is disclosed, which comprises a buffer body,
the buffer comprises a buffer body 1, a piston rod 2 penetrates through the buffer body 1, a piston 3 is fixedly connected to the piston rod 2, the piston 3 is positioned in an oil cavity 8 in the buffer body 1, one end of the buffer body 1 is communicated with an air cavity 4, a first one-way valve 5 is arranged on the bottom wall of the air cavity 4, one end of the piston rod 2 is positioned in the air cavity 4 and is connected with a buffer sleeve 6, a buffer spring 7 is arranged between the buffer sleeve 6 and the bottom wall of the air cavity 4, compressed air is filled into the air cavity 4 through the first one-way valve 5, the oil cavity 8, the air cavity 4 and the buffer spring 7 play a buffer role in buffering pressure transmitted by the piston rod 2, and when an external device acts on the end part of the piston rod 2, the piston rod 2 drives the piston 3 to move in the oil cavity 8, an annular gap is formed between the piston 3 and the inner side wall of the buffer body 1, oil liquid positioned on one side of the oil cavity 8 enters the other side of the oil cavity 8 under the pressure of the piston 3 along with the movement of the piston 3, partial impact force of an external device is counteracted by the transfer of the oil liquid, the buffer function is realized to the external device, the piston rod 2 is pressed to move and drives the buffer sleeve 6 to move in the air cavity 4, the buffer spring 7 is compressed, the impact force of an external device is offset by the compression of the gas in the gas cavity 4 and the compression of the buffer spring 7, and finally the kinetic energy of the external device is converted into heat energy to be dissipated.
This embodiment, specifically speaking, piston rod 2 with swing joint between buffer sleeve 6, be provided with compressible gas in the buffer sleeve 6, act on when external device the tip of piston rod 2, piston rod 2 is pressed to move and is driven simultaneously buffer sleeve 6 is in remove in the air cavity 4, and it is right buffer spring 7 compresses, the gas receives the compression in the air cavity 4 and buffer spring 7 receives the compression all to offset out external device impact force, just piston rod 2 is in buffer sleeve 6 has certain displacement in, the gas in the buffer sleeve 6 receives the compression of certain degree, buffer sleeve 6's setting is further offset out external device impact force.
This embodiment, specifically, be provided with on the lateral wall of buffer body 1 oil feed passageway 9 and with second check valve 10 that oil feed passageway 9 links to each other, the oil outlet end of oil feed passageway 9 with oil chamber 8 is linked together, through second check valve 10 to input hydraulic oil in the oil feed passageway 9, hydraulic oil follows oil feed passageway 9 enters into in the oil chamber 8, in order to accomplish right the oil charge of oil chamber 8.
This embodiment, particularly, be provided with pressure regulating channel 11 on the lateral wall of buffer body 1 and with needle valve 12 that pressure regulating channel 11 is connected, pressure regulating channel 11 the tip with oil chamber 8 is linked together, needle valve 12 is used for adjusting compressible degree in the oil chamber 8, through needle valve 12 is adjusted compressible degree in the oil chamber 8 is convenient from this right buffer degree of buffer body 1 is adjusted, according to external device buffering needs, adjusts needle valve 12 makes compressible degree is big in the oil chamber 8, then piston rod 2 easily pushes down, adjusts needle valve 12 makes compressible degree is little in the oil chamber 8, then piston rod 2 is difficult for pushing down.
This embodiment, specifically speaking, the top of piston rod 2 is located the outside of buffer body 1 and fixed cover are equipped with buffer pressure head 13, buffer pressure head 13 and outside are treated the buffer and are contacted and transmit pressure, setting up of buffer pressure head 13 is used for the protection the tip of piston rod 2, buffer pressure head 13 is removable and the bearing area is greater than piston rod 2.
This embodiment, specifically, buffer body 1 opening part is provided with fixed sleeve 14, piston rod 2 be located fixed sleeve 14 the inboard and with fixed sleeve 14 sliding connection, fixed sleeve 14 set up convenient in with buffer body 1 opening part is connected, just fixed sleeve 14 can keep piston rod 2 is not influencing carry out the free activity under the prerequisite of buffer body 1 leakproofness.
In this embodiment, specifically, the fixed sleeve 14 is provided with a sealing member 15 at a contact position with the bumper body 1, the sealing member 15 is used for sealing a connection gap between the fixed sleeve 14 and the bumper body 1, and the sealing member 15 can effectively prevent the leakage of the hydraulic oil in the oil chamber 8.
This embodiment, specifically, sealing member 15 is the sealing ring, the sealing ring with the inside wall of buffer body 1 with the fixed bonding of fixed sleeve 14's lateral wall, the sealing ring convenient with the inside wall of buffer body 1 with the lateral wall of fixed sleeve 14 bonds, can effectively prevent hydraulic oil leaks in the oil pocket 8.
In this embodiment, specifically, an external thread is disposed on an outer side wall of the fixed sleeve 14, a gland 16 is connected to the fixed sleeve 14 through a thread, the gland 16 is sealed at an outer side of the sealing member 15, and the arrangement of the gland 16 further prevents leakage of hydraulic oil in the oil chamber 8.
In this embodiment, specifically, the end of the buffer body 1 is fixedly assembled with a fixing base 17, the air cavity 4 is communicated with and arranged on the fixing base 17, an assembly hole is formed in the fixing base 17, the fixing base 17 is arranged to be connected with an installation plane, and the fixing base 17 can fix the buffer on the installation plane integrally so as to buffer an external mobile device.
The working principle is as follows: a piston rod 2 penetrates through the interior of a buffer body 1, a piston 3 is fixedly connected to the piston rod 2, the piston 3 is positioned in an oil cavity 8 in the buffer body 1, one end of the buffer body 1 is communicated with an air cavity 4, a first one-way valve 5 is arranged on the bottom wall of the air cavity 4, one end of the piston rod 2 is positioned in the air cavity 4 and is connected with a buffer sleeve 6, a buffer spring 7 is arranged between the buffer sleeve 6 and the bottom wall of the air cavity 4, compressed air is filled into the air cavity 4 through the first one-way valve 5, the oil cavity 8, the air cavity 4 and the buffer spring 7 jointly play a buffer role in buffering pressure transmitted through the piston rod 2, when an external device acts on the end part of the piston rod 2, the piston rod 2 drives the piston 3 to move in the oil cavity 8, an annular gap is formed between the piston 3 and the inner side wall of the buffer body 1, and along with the movement of the piston 3, oil, the buffer device integrates hydraulic pressure, air pressure and springs, can effectively decelerate and brake the external device in time to bear larger impact load, and has effective buffer effect on the running device.
So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the invention, and the technical scheme after the changes or substitutions can fall into the protection scope of the invention.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention; various modifications and alterations to this invention will become apparent to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A buffer, characterized by: comprises a buffer body (1), a piston rod (2) penetrates through the buffer body (1), the piston rod (2) is fixedly connected with a piston (3), the piston (3) is positioned in an oil cavity (8) in the buffer body (1), one end of the buffer body (1) is communicated with an air cavity (4), a first one-way valve (5) is arranged on the bottom wall of the air cavity (4), one end of the piston rod (2) is positioned in the air cavity (4) and is connected with a buffer sleeve (6), a buffer spring (7) is arranged between the buffer sleeve (6) and the bottom wall of the air cavity (4), compressed air is filled into the air cavity (4) through the first one-way valve (5), the oil cavity (8), the air cavity (4) and the buffer spring (7) play a role in buffering pressure transmitted by the piston rod (2) together.
2. A damper according to claim 1, characterized in that said piston rod (2) is movably connected to said damping sleeve (6), and said damping sleeve (6) is provided with a compressible gas therein.
3. The buffer as claimed in claim 2, wherein an oil inlet channel (9) and a second one-way valve (10) connected with the oil inlet channel (9) are arranged on the side wall of the buffer body (1), and an oil outlet end of the oil inlet channel (9) is communicated with the oil chamber (8).
4. A damper according to any one of claims 1-3, wherein a pressure adjusting passage (11) and a needle valve (12) connected to the pressure adjusting passage (11) are provided on a side wall of the damper body (1), an end of the pressure adjusting passage (11) communicates with the oil chamber (8), and the needle valve (12) is used for adjusting a degree of compressibility in the oil chamber (8).
5. A damper according to claim 4, characterized in that the top end of the piston rod (2) is located outside the damper body (1) and is fixedly sleeved with a damper pressure head (13), and the damper pressure head (13) is in contact with an external device to be damped and transmits pressure.
6. A buffer according to claim 4, characterized in that a fixing sleeve (14) is arranged at the opening of the buffer body (1), and the piston rod (2) is located inside the fixing sleeve (14) and is connected with the fixing sleeve (14) in a sliding manner.
7. A buffer according to claim 6, characterized in that a sealing member (15) is arranged at the contact part of the fixing sleeve (14) and the buffer body (1), and the sealing member (15) is used for sealing the connecting gap between the fixing sleeve (14) and the buffer body (1).
8. A damper according to claim 7, characterized in that the sealing element (15) is a sealing ring which is fixedly bonded to the inner side wall of the damper body (1) and to the outer side wall of the retaining sleeve (14).
9. A buffer according to claim 6, characterized in that the outer side wall of the fixed sleeve (14) is provided with an external thread, the fixed sleeve (14) is connected with a gland (16) in a threaded manner, and the gland (16) is sealed at the outer side of the sealing element (15).
10. The buffer according to claim 1, wherein a fixing base (17) is fixedly assembled at the end of the buffer body (1), the air chamber (4) is communicated and arranged on the fixing base (17), and an assembling hole is formed in the fixing base (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110254251.2A CN113007263A (en) | 2021-03-09 | 2021-03-09 | Buffer device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110254251.2A CN113007263A (en) | 2021-03-09 | 2021-03-09 | Buffer device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113007263A true CN113007263A (en) | 2021-06-22 |
Family
ID=76402612
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110254251.2A Pending CN113007263A (en) | 2021-03-09 | 2021-03-09 | Buffer device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113007263A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113932663A (en) * | 2021-10-29 | 2022-01-14 | 大连理工大学 | Reverse air injection load-reducing device |
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2021
- 2021-03-09 CN CN202110254251.2A patent/CN113007263A/en active Pending
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113932663A (en) * | 2021-10-29 | 2022-01-14 | 大连理工大学 | Reverse air injection load-reducing device |
| CN113932663B (en) * | 2021-10-29 | 2022-12-09 | 大连理工大学 | Reverse air injection load-reducing device |
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Address after: No. 1958, Chuangye street, Changchun automobile economic and Technological Development Zone, Changchun City, Jilin Province, 130011 Applicant after: The Ninth Design and Research Institute of Machinery Industry Co.,Ltd. Address before: No. 1958, Chuangye street, Changchun automobile economic and Technological Development Zone, Changchun City, Jilin Province, 130011 Applicant before: Machinery Industry Ninth Design and Research Institute Co.,Ltd. |
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Application publication date: 20210622 |