CN219452740U - Motor train unit liquid-gas buffer - Google Patents
Motor train unit liquid-gas buffer Download PDFInfo
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- CN219452740U CN219452740U CN202320680851.XU CN202320680851U CN219452740U CN 219452740 U CN219452740 U CN 219452740U CN 202320680851 U CN202320680851 U CN 202320680851U CN 219452740 U CN219452740 U CN 219452740U
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- fixedly connected
- piston rod
- hollow piston
- cavity
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T30/00—Transportation of goods or passengers via railways, e.g. energy recovery or reducing air resistance
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Abstract
The utility model discloses a motor train unit hydraulic and pneumatic buffer, which relates to the technical field of buffers and comprises a base, wherein an outer cylinder is fixedly arranged on the outer wall of the base, an inner cylinder is fixedly connected to the inner wall of the outer cylinder, an orifice I is formed on the outer wall of the inner cylinder, a piston is movably connected to the inner wall of the inner cylinder, an oil cavity II is formed between one side of the piston and the bottom of the inner cylinder, a hollow piston rod is fixedly connected to the outer wall of the piston, and a floating piston is slidably connected to the inner wall of the hollow piston rod. According to the utility model, the fixed baffle plate, the sealing block and the end cover are attached to the outer wall of the hollow piston rod, so that the sealing effect is realized on hydraulic oil in the outer cylinder, the sealing block is pushed to be abutted against the side surface of the end cover through the elasticity of the elastic sheet, the sealing effect is improved, external dust is prevented from entering through the cooperation of the dustproof groove, the dustproof ring and the sealing ring, the sealing element is damaged, the sealing performance is prevented from being damaged, and the sealing effect is further improved.
Description
Technical Field
The utility model relates to the technical field of buffers, in particular to a motor train unit liquid-gas buffer.
Background
At present, a gas-liquid buffer is used as a main buffering energy-absorbing module for high-speed railways and subways, and the gas-liquid buffer has the excellent characteristics of large capacity, high energy absorptivity, capability of continuously and stably absorbing longitudinal impact kinetic energy of trains and the like, and can meet various performance requirements under the conditions of high speed, low speed and heavy load. The buffer energy absorption function of the gas-liquid buffer is mainly realized by the relative motion of two mediums of gas and liquid, when the buffer is pressed, the liquid medium in the buffer flows into the other liquid cavity from one liquid cavity through a tiny orifice and a pressurizing valve, and simultaneously pushes a piston to compress the gas, in the process, part of external impact kinetic energy is consumed through friction between the liquid and the inner wall of metal, and the other part of impact energy is converted into compression potential energy of the gas to be used as restoring force of the buffer. The following problems exist in the prior art:
because the sealing performance of the existing buffer is not high, along with the increase of the service time of the device, dust, water vapor and other impurities in the air easily enter the buffer, damage to sealing elements in the buffer is caused, and the service life of the device is reduced.
Disclosure of Invention
The utility model provides a motor train unit liquid-air buffer to solve the problems in the background technology.
In order to solve the technical problems, the utility model adopts the following technical scheme:
the utility model provides a EMUs hydraulic buffer, includes the base, the outer wall fixed mounting of base has the outer jar, the inner wall fixedly connected with inner cylinder of outer jar, orifice one has been seted up to the outer wall of inner cylinder, the inner wall swing joint of inner cylinder has the piston, form oil pocket two between one side of piston and the inner cylinder bottom, the outer wall fixedly connected with hollow piston rod of piston, the inner wall sliding connection of hollow piston rod has the floating piston, form oil pocket one between the floating piston in piston and the hollow piston rod, one side of floating piston forms the air cavity with the inner wall of hollow piston rod, orifice two has been seted up to the outer wall of piston, two communicate through the orifice between oil pocket two and the oil pocket one, the outer wall swing joint of hollow piston rod has fixed stop, fixed stop's outer wall and the inner wall fixed connection of outer cylinder, the side fixedly connected with shell fragment of fixed stop, the outer wall swing joint of hollow piston rod has the sealing block, the outer wall and the inner wall swing joint of outer cylinder of sealing block, the one end and the side fixed connection of sealing block of shell fragment.
By adopting the technical scheme, the fixed baffle, the sealing block and the end cover which are arranged in the scheme are attached to the outer wall of the hollow piston rod, the sealing effect is realized on hydraulic oil in the outer cylinder, the sealing block is pushed against the side surface of the end cover through the elasticity of the elastic piece, and the sealing effect is improved.
The technical scheme of the utility model is further improved as follows: one end fixedly connected with connecting block of hollow piston rod, the outer wall movable mounting of hollow piston rod has the spring one, the one end of spring one and the side fixed connection of connecting block.
By adopting the technical scheme, the spring on the outer wall of the hollow piston rod has a primary buffering effect, and the restoring force of the first spring assists the hollow piston rod to restore.
The technical scheme of the utility model is further improved as follows: the one end of outer jar has been seted up the mounting groove, the inner wall movable mounting of mounting groove has the end cover, the dust groove has been seted up to the outer wall of end cover, the inner wall fixedly connected with dirt-proof ring of dust-proof groove, the outer wall of dirt-proof ring laminates with the inner wall of mounting groove mutually, the inner wall fixedly connected with sealing ring of end cover, the inner ring wall of sealing ring laminates with the outer wall of hollow piston rod mutually.
By adopting the technical scheme, the external dust is prevented from entering through the cooperation of the dustproof groove, the dustproof ring and the sealing ring in the scheme, the sealing element is damaged, and the sealing effect is further improved.
The technical scheme of the utility model is further improved as follows: the inside of end cover has seted up the cavity, the inner wall sliding connection of cavity has the pin, the bar groove has been seted up to the inner wall of mounting groove, the circular slot has been seted up to the inner wall in bar groove, the one end of pin runs through the inner wall of cavity and extends to the circular slot in and fixedly connected with bar piece.
By adopting the technical scheme, the strip-shaped block is clamped and fixed in the circular groove.
The technical scheme of the utility model is further improved as follows: the connecting rod is fixedly connected with one end of the pin rod, the second spring is movably mounted on the outer wall of the connecting rod, one end of the second spring is fixedly connected with the inner wall of the cavity, and the other end of the second spring is fixedly connected with the side face of the pin rod.
By adopting the technical scheme, the clamping connection of the pin rod and the strip-shaped block is more stable through the second pair of springs in the scheme.
The technical scheme of the utility model is further improved as follows: one end of the connecting rod penetrates through the inner wall of the cavity to extend to the outside and is fixedly connected with a pull ring.
By adopting the technical scheme, the connecting rod is conveniently pulled by the pull ring in the scheme.
By adopting the technical scheme, compared with the prior art, the utility model has the following technical progress:
1. according to the hydraulic-pneumatic buffer for the motor train unit, the fixed baffle plate, the sealing block and the end cover are arranged and are attached to the outer wall of the hollow piston rod, so that the sealing effect is achieved on hydraulic oil in an outer cylinder, the sealing block is pushed to be tightly abutted against the side face of the end cover through the elasticity of the elastic sheet, the sealing effect is improved, external dust is prevented from entering through the cooperation of the dustproof groove, the dustproof ring and the sealing ring, the sealing element is prevented from being damaged, the sealing performance is prevented from being damaged, and the sealing effect is further improved.
2. According to the hydraulic-pneumatic buffer for the motor train unit, the pull ring is rotated to drive the pin rod and the bar block to rotate through the connecting rod to be aligned with the bar groove, then the pull ring is pulled to drive the pin rod and the bar block to be separated from the circular groove and the bar groove and enter the cavity, and then the end cover can be opened to overhaul the inside of the buffer, so that the sealing block can be conveniently replaced and the buffer can be conveniently maintained.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present utility model;
FIG. 2 is a schematic cross-sectional view of the present utility model;
FIG. 3 is an enlarged schematic view of the structure of FIG. 2A according to the present utility model;
fig. 4 is an enlarged schematic view of the structure of fig. 2B according to the present utility model.
In the figure: 1. a base; 2. an outer cylinder; 21. a fixed baffle; 22. a spring plate; 23. a sealing block; 24. a mounting groove; 25. a bar-shaped groove; 26. a circular groove; 3. a hollow piston rod; 31. a floating piston; 32. an oil cavity I; 33. an air cavity; 34. a connecting block; 35. a first spring; 4. an inner cylinder; 41. an orifice I; 42. an oil cavity II; 5. a piston; 51. an orifice II; 6. an end cap; 61. a dust-proof groove; 62. a dust-proof ring; 63. a cavity; 64. a pin rod; 65. a bar block; 66. a connecting rod; 67. a second spring; 68. a pull ring; 69. and (3) a sealing ring.
Detailed Description
The utility model is further illustrated by the following examples:
example 1
As shown in fig. 1-4, the utility model provides a hydraulic buffer of a motor train unit, which comprises a base 1, wherein an outer cylinder 2 is fixedly arranged on the outer wall of the base 1, an inner cylinder 4 is fixedly connected with the inner wall of the outer cylinder 2, an orifice I41 is arranged on the outer wall of the inner cylinder 4, a piston 5 is movably connected with the inner wall of the inner cylinder 4, an oil cavity II 42 is formed between one side of the piston 5 and the bottom of the inner cylinder 4, a hollow piston rod 3 is fixedly connected with the outer wall of the piston 5, a floating piston 31 is slidably connected with the inner wall of the hollow piston rod 3, an oil cavity I32 is formed between the piston 5 and the floating piston 31 in the hollow piston rod 3, one side of the floating piston 31 and the inner wall of the hollow piston rod 3 form an air cavity 33, an orifice II 51 is arranged on the outer wall of the piston 5, the oil cavity II 42 is communicated with the oil cavity I32 through the orifice II 51, a fixed baffle 21 is movably connected with the outer wall of the hollow piston rod 3, a spring plate 22 is fixedly connected with the outer wall of the fixed baffle 21, a spring plate 22 is movably connected with the outer wall of the hollow piston 3, a sealing block 23 is movably connected with the outer wall of the hollow piston rod 3, a side of the piston is movably connected with the spring plate 23, an end of the spring plate is movably connected with the inner wall of the outer cylinder 2, an end of the spring plate is movably connected with the spring plate through the spring plate is, and is fixedly connected with the side of the spring plate 22.
In this embodiment, after the shock absorber is impacted, the piston 5 is pushed by the hollow piston rod 3 to retract in the inner cylinder 4, the internal hydraulic oil is extruded, the hydraulic oil flows out from the first orifice 41 on the inner cylinder 4 after being pressurized, the hydraulic oil enters the first oil cavity 32 through the second orifice 51 to generate a buffering damping effect, the floating piston 31 is pushed by the hydraulic oil to move right to compress the air cavity 33, buffering damping energy consumption is realized, after the shock is finished, the floating piston 31 is pushed by compressed air to slide towards the direction of the piston 5, the oil in the first oil cavity 32 flows back into the second oil cavity 42 through the second orifice 51, the hollow piston rod 3 is reset, the fixed baffle 21, the sealing block 23 and the end cover 6 are attached to the outer wall of the hollow piston rod 3, the sealing effect is realized for the hydraulic oil in the outer cylinder 2, the sealing block 23 is pushed by the elasticity of the elastic sheet 22 to abut against the side surface of the end cover 6, and the sealing effect is improved.
Example 2
As shown in fig. 1-4, on the basis of embodiment 1, the present utility model provides the following technical solutions: preferably, one end fixedly connected with connecting block 34 of hollow piston rod 3, the outer wall movable mounting of hollow piston rod 3 has spring one 35, the one end of spring one 35 and the side fixed connection of connecting block 34, mounting groove 24 has been seted up to the one end of outer jar 2, the inner wall movable mounting of mounting groove 24 has end cover 6, dustproof groove 61 has been seted up to the outer wall of end cover 6, the inner wall fixedly connected with dust ring 62 of dustproof groove 61, the outer wall of dust ring 62 is laminated mutually with the inner wall of mounting groove 24, the inner wall fixedly connected with sealing ring 69 of end cover 6, the inner ring wall of sealing ring 69 is laminated mutually with the outer wall of hollow piston rod 3.
In this embodiment, the first spring 35 through the outer wall of the hollow piston rod 3 plays preliminary buffering effect, and simultaneously, the restoring force through the first spring 35 assists the hollow piston rod 3 to reset, prevents external dust from entering through the cooperation of the dustproof groove 61, the dustproof ring 62 and the sealing ring 69, damages the sealing element, and further improves the sealing effect.
Example 3
As shown in fig. 1-4, on the basis of embodiment 1, the present utility model provides the following technical solutions: preferably, cavity 63 has been seted up to the inside of end cover 6, the inner wall sliding connection of cavity 63 has pin 64, bar groove 25 has been seted up to the inner wall of mounting groove 24, circular groove 26 has been seted up to the inner wall of bar groove 25, the one end of pin 64 runs through the inner wall of cavity 63 and extends to in the circular groove 26 and fixedly connected with bar piece 65, the one end fixedly connected with connecting rod 66 of pin 64, the outer wall movable mounting of connecting rod 66 has spring two 67, the one end and the inner wall fixed connection of cavity 63 of spring two 67, the other end and the side fixed connection of pin 64 of spring two 67, the one end of connecting rod 66 runs through the inner wall of cavity 63 and extends to outside and fixedly connected with pull ring 68.
In this embodiment, the pull ring 68 is rotated to drive the pin 64 and the bar block 65 to rotate through the connecting rod 66 to align with the bar groove 25, and then the pull ring 68 is pulled to drive the pin 64 and the bar block 65 to be separated from the circular groove 26 and the bar groove 25 and enter the cavity 63, so that the end cover 6 can be opened to overhaul the inside of the buffer.
The working principle of the hydraulic and pneumatic buffer of the motor train unit is specifically described below.
When the shock absorber is used, as shown in fig. 1-4, after the shock absorber is impacted, the piston 5 is pushed by the hollow piston rod 3 to retract in the inner cylinder 4, the internal hydraulic oil is extruded, the hydraulic oil flows out from the first orifice 41 on the inner cylinder 4 after being pressurized, the hydraulic oil enters the first oil cavity 32 through the second orifice 51 to generate a buffering damping effect, then the hydraulic oil enters the first oil cavity 32 to push the floating piston 31 to move right to compress the air cavity 33, so as to realize buffering damping energy consumption, after the shock is ended, the floating piston 31 is pushed by compressed air to slide towards the piston 5, the oil in the first oil cavity 32 flows back into the second oil cavity 42 through the second orifice 51, the hollow piston rod 3 is reset, the first spring 35 on the outer wall of the hollow piston rod 3 plays a primary buffering effect, and the restoring force of the first spring 35 assists the hollow piston rod 3 to reset, through the fixed baffle 21 that sets up, sealing block 23 and end cover 6 laminating mutually with the outer wall of hollow piston rod 3, realize sealed effect to the hydraulic oil in the outer jar 2, the elasticity through shell fragment 22 promotes sealing block 23 and the side of end cover 6 and supports tightly, improved sealed effect, prevent external dust entering through the cooperation of dirt-proof groove 61, dirt-proof ring 62 and sealing ring 69, cause the damage to the sealing member, further improved sealed effect, when the end cover 6 needs to be dismantled, at first drive pin 64 and bar 65 rotation through connecting rod 66 through rotating pull ring 68 and align with bar groove 25, then pull ring 68 and then drive pin 64 and bar 65 break away from circular slot 26 and bar groove 25 and get into in the cavity 63, at this moment alright open the inside of end cover 6 to the buffer overhauls.
The foregoing utility model has been generally described in great detail, but it will be apparent to those skilled in the art that modifications and improvements can be made thereto. Accordingly, it is intended to cover modifications or improvements within the spirit of the inventive concepts.
Claims (6)
1. EMUs liquid gas buffer, including base (1), its characterized in that: the outer wall of the base (1) is fixedly provided with an outer cylinder (2), the inner wall of the outer cylinder (2) is fixedly connected with an inner cylinder (4), the outer wall of the inner cylinder (4) is provided with a first orifice (41), the inner wall of the inner cylinder (4) is movably connected with a second piston (51), an oil cavity (42) is formed between one side of the piston (5) and the bottom of the inner cylinder (4), the outer wall of the piston (5) is fixedly connected with a hollow piston rod (3), the inner wall of the hollow piston rod (3) is slidably connected with a floating piston (31), an oil cavity I (32) is formed between the piston (5) and the floating piston (31) in the hollow piston rod (3), one side of the floating piston (31) and the inner wall of the hollow piston rod (3) form an air cavity (33), the outer wall of the piston (5) is provided with a second orifice (51), a fixed orifice (21) is movably connected between one side of the second piston (42) and the oil cavity I (32) through the second orifice (51), the outer wall of the hollow piston rod (3) is fixedly connected with a fixed baffle (21), the outer wall of the hollow piston rod (21) is fixedly connected with the inner wall of the hollow piston rod (3) and the hollow piston rod (21), the side face (23) is fixedly connected with a movable baffle (22), the outer wall of the sealing block (23) is movably connected with the inner wall of the outer cylinder (2), and one end of the elastic sheet (22) is fixedly connected with the side face of the sealing block (23).
2. The motor train unit liquid-gas buffer according to claim 1, wherein: one end fixedly connected with connecting block (34) of hollow piston rod (3), the outer wall movable mounting of hollow piston rod (3) has first spring (35), the side fixed connection of one end and connecting block (34) of first spring (35).
3. The motor train unit liquid-gas buffer according to claim 1, wherein: the one end of outer jar (2) has been seted up mounting groove (24), the inner wall movable mounting of mounting groove (24) has end cover (6), dustproof groove (61) have been seted up to the outer wall of end cover (6), the inner wall fixedly connected with dust ring (62) of dustproof groove (61), the outer wall of dust ring (62) is laminated with the inner wall of mounting groove (24) mutually, the inner wall fixedly connected with sealing ring (69) of end cover (6), the inner ring wall of sealing ring (69) is laminated with the outer wall of hollow piston rod (3) mutually.
4. A motor train unit liquid-gas buffer as claimed in claim 3, wherein: the inside of end cover (6) has seted up cavity (63), the inner wall sliding connection of cavity (63) has round pin pole (64), bar groove (25) have been seted up to the inner wall of mounting groove (24), circular groove (26) have been seted up to the inner wall of bar groove (25), the one end of round pin pole (64) runs through the inner wall of cavity (63) and extends to in circular groove (26) and fixedly connected with bar piece (65).
5. The motor train unit liquid-gas buffer according to claim 4, wherein: one end fixedly connected with connecting rod (66) of round pin pole (64), the outer wall movable mounting of connecting rod (66) has second spring (67), the inner wall fixed connection of one end and cavity (63) of second spring (67), the side fixed connection of the other end and round pin pole (64) of second spring (67).
6. The motor train unit liquid-gas buffer according to claim 5, wherein: one end of the connecting rod (66) penetrates through the inner wall of the cavity (63) to extend to the outside and is fixedly connected with a pull ring (68).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320680851.XU CN219452740U (en) | 2023-03-31 | 2023-03-31 | Motor train unit liquid-gas buffer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320680851.XU CN219452740U (en) | 2023-03-31 | 2023-03-31 | Motor train unit liquid-gas buffer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219452740U true CN219452740U (en) | 2023-08-01 |
Family
ID=87417920
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320680851.XU Active CN219452740U (en) | 2023-03-31 | 2023-03-31 | Motor train unit liquid-gas buffer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219452740U (en) |
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2023
- 2023-03-31 CN CN202320680851.XU patent/CN219452740U/en active Active
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