CN111098881B - Gas-liquid buffer with pull-press bidirectional buffering function and buffering device thereof - Google Patents
Gas-liquid buffer with pull-press bidirectional buffering function and buffering device thereof Download PDFInfo
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- CN111098881B CN111098881B CN201811267127.4A CN201811267127A CN111098881B CN 111098881 B CN111098881 B CN 111098881B CN 201811267127 A CN201811267127 A CN 201811267127A CN 111098881 B CN111098881 B CN 111098881B
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- plunger
- cylinder barrel
- gas
- diameter cylinder
- liquid buffer
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- 239000007788 liquid Substances 0.000 title claims abstract description 101
- 230000002457 bidirectional effect Effects 0.000 title claims abstract description 50
- 230000003139 buffering effect Effects 0.000 title claims description 18
- 238000013016 damping Methods 0.000 claims abstract description 32
- 238000007789 sealing Methods 0.000 claims description 29
- 239000010720 hydraulic oil Substances 0.000 claims description 20
- 238000007906 compression Methods 0.000 abstract description 12
- 230000006835 compression Effects 0.000 abstract description 10
- 238000010521 absorption reaction Methods 0.000 abstract description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 31
- 229910052757 nitrogen Inorganic materials 0.000 description 15
- 239000007789 gas Substances 0.000 description 5
- 239000003921 oil Substances 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61G—COUPLINGS; DRAUGHT AND BUFFING APPLIANCES
- B61G11/00—Buffers
- B61G11/12—Buffers with fluid springs or shock-absorbers; Combinations thereof
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Fluid-Damping Devices (AREA)
Abstract
The invention provides a gas-liquid buffer with a pull-press bidirectional buffer function, which mainly comprises a bidirectional cylinder barrel, a plunger A, a plunger B, a throttling damping rod A and a throttling damping rod B, wherein the bidirectional cylinder barrel is provided with a cylindrical structure which extends to two sides independently along the axial direction of the gas-liquid buffer, the center of the cylindrical structure is a large-diameter cylinder barrel, at least two independent small-diameter cylinder barrels are uniformly distributed on the periphery of the large-diameter cylinder barrel, and the large-diameter cylinder barrel and the open ends of the small-diameter cylinder barrel are oppositely arranged; the plunger A slides in the large-diameter cylinder barrel along the axial direction of the cylinder barrel, and the number of the plungers B is matched with that of the small-diameter cylinder barrel. The gas-liquid buffer has the advantages of bidirectional tension and compression, can absorb energy no matter being compressed or stretched, and has larger energy absorption capacity under the same condition.
Description
Technical Field
The invention relates to a bidirectional buffer gas-liquid buffer, in particular to a gas-liquid buffer with a pull-press bidirectional buffer function and a buffer device thereof, belonging to the technical field of car coupler buffer.
Background
The coupler buffer device is a key component in the railway vehicle and plays roles of connecting the vehicle and relieving impact. In order to improve the comfort of the railway vehicle and the safety of the railway vehicle in the running process, an energy absorbing device such as a buffer or a crushing pipe is arranged in the car coupler buffer device and is used for absorbing impact energy generated by the railway vehicle in the normal running or shunting process, wherein the gas-liquid buffer is a recoverable energy absorbing device, and the crushing pipe is an unrecoverable energy absorbing device.
In the existing car coupler buffer device structure, a recoverable energy absorbing device widely adopts a structure form of a gas-liquid buffer and a ring-shaped spring, wherein the gas-liquid buffer is used for absorbing energy when a vehicle is compressed, and the ring-shaped spring is used for absorbing energy when the vehicle is stretched. The gas-liquid buffer utilizes the damping of oil passing through the throttle orifice to realize the buffering, absorption and attenuation of train impact energy; the piston reset function is realized by utilizing the gas pressure, the spring reset function is replaced, and the piston has the characteristics of large capacity, stable performance, long service life and the like. The ring spring has small capacity and is easy to generate fatigue due to the structural characteristic. Along with the high-speed development of the rail transportation industry, the safety and comfort requirements during the running of vehicles are higher and higher, and the requirements on the capacity of the buffer are higher, so that a gas-liquid buffer with a novel structure is needed, and the pulling-pressing bidirectional energy absorption can be realized at the same time.
Disclosure of Invention
Aiming at the technical problems, the invention provides the gas-liquid buffer with the tension-compression bidirectional buffer function and the buffer device thereof, which can simultaneously meet the performance requirements of tension-compression bidirectional energy absorption, and the vehicle has larger energy absorption capacity when being stretched and compressed.
The technical scheme for solving the technical problems is as follows: the gas-liquid buffer mainly comprises a bidirectional cylinder barrel, a plunger A, a plunger B, a throttling damping rod A and a throttling damping rod B, wherein the bidirectional cylinder barrel is provided with a cylindrical structure which extends to two sides independently along the axial direction of the gas-liquid buffer, the center of the cylindrical structure is a large-diameter cylinder barrel, at least two independent small-diameter cylinder barrels are uniformly distributed around the large-diameter cylinder barrel, the large-diameter cylinder barrel and the small-diameter cylinder barrel are closed at one end and open at the other end, and the open ends of the large-diameter cylinder barrel and the small-diameter cylinder barrel are arranged oppositely; the closed ends of the two cylinders are respectively provided with a throttle rod hole, and the throttle damper rod A and the throttle damper rod B are respectively arranged in the throttle rod holes of the large-diameter cylinder and the small-diameter cylinder; the plunger A slides in the large-diameter cylinder barrel along the axial direction of the cylinder barrel, and the plunger A is matched with the throttling damper rod A in the large-diameter cylinder barrel; the number of the plungers B is matched with that of the small-diameter cylinder barrels, the plungers B slide in the corresponding small-diameter cylinder barrels along the axial direction of the small-diameter cylinder barrels respectively, and the plungers B and the throttling damper rod B are arranged in the small-diameter cylinder barrels.
According to the technical scheme, the gas-liquid buffer with the pull-press bidirectional buffering function is characterized in that a plunger head A is arranged at one end, close to the closed end of the large-diameter cylinder barrel, of the plunger A, a flow guide cavity matched with the throttling damper rod A is arranged on the plunger head A, a one-way damping valve A is arranged on the flow guide cavity, far away from the closed end of the large-diameter cylinder barrel, and a sealing guide device is arranged on each of the plunger A and the plunger head A and is in sealing fit with the large-diameter cylinder barrel, so that a first liquid cavity for filling hydraulic oil is formed between the plunger head A and the large-diameter cylinder barrel;
A floating piston A is arranged in the plunger A, the floating piston A slides in the plunger A along the axial direction of the plunger A, and a sealing guide device is arranged on the floating piston A and is matched with the plunger A in a sealing way, so that a cavity in the plunger A is divided into a second liquid cavity adjacent to the plunger head A and a first air cavity positioned on the other side of the floating piston A and used for filling gas.
The piston B is provided with the piston head B at one end close to the closed end of the small-diameter cylinder barrel, the piston head B is provided with the flow guide cavity matched with the throttling damping rod B, the flow guide cavity far away from the closed end of the small-diameter cylinder barrel is provided with the one-way damping valve B, and the piston B and the piston head B are respectively provided with the sealing guide device in sealing fit with the small-diameter cylinder barrel, so that a third liquid cavity for filling hydraulic oil is formed between the piston head B and the small-diameter cylinder barrel;
And a floating piston B is arranged in the plunger B, the floating piston B slides in the plunger B along the axial direction of the plunger B, and a sealing guide device is arranged on the floating piston B and is in sealing fit with the plunger B, so that a cavity in the plunger B is divided into a fourth liquid cavity positioned on one side of the plunger head B and a second air cavity positioned on the other side of the plunger head B and used for filling gas.
The gas-liquid buffer with the pull-press bidirectional buffering function is characterized in that: the diameters of the throttling damper rod A and the throttling damper rod B are smaller than the inner diameter of the diversion cavity on the corresponding plunger head.
The gas-liquid buffer with the pulling and pressing bidirectional buffering function is characterized in that the outer diameter of the bidirectional cylinder barrel is circumferentially provided with the guide device mounting groove.
The gas-liquid buffer with the pull-press bidirectional buffer function is characterized in that a fixed connection structure is arranged on the outer side of the closed end of the large-diameter cylinder barrel of the bidirectional cylinder barrel, and the fixed connection structure is a threaded structure or a clamping structure and is connected with the clamping ring head through the connection structure.
The gas-liquid buffer with the pulling and pressing bidirectional buffering function is characterized in that the first air cavity of the plunger A and the second air cavity of the plunger B are respectively provided with an air charging hole, and a screw plug is arranged on the air charging holes. The plunger A is positioned on the same axis as the throttling damper A, the one-way damping valve A and the plunger head A. The plunger B is positioned on the same axis as the throttling damping B, the one-way damping valve B and the plunger head B.
The buffer device comprises a sleeve, a guide ring, a gas-liquid buffer, a round nut and a snap ring head, wherein the sleeve is a cylinder with one end open and one end closed; the plunger A of the gas-liquid buffer is propped against the closed end of the sleeve, the round nut is arranged at the closed end of the large-diameter cylinder barrel of the gas-liquid buffer through the guide ring, the outer ring of the round nut is fixedly connected with the open end of the sleeve, and the tail end of the plunger B on the outer ring of the gas-liquid buffer is propped against the round nut; the clamping ring head is fixedly connected to the closed end of the large-diameter cylinder barrel.
Further, in the buffer device, the closed end of the sleeve and the snap ring head are both provided with operation holes. The round nut is fixedly connected with the open end of the sleeve by adopting a threaded structure.
According to the technical scheme, nitrogen with certain initial pressure is filled in the first air cavity, hydraulic oil is filled in the first liquid cavity and the second liquid cavity, the hydraulic oil and the nitrogen are isolated by the floating piston A, and the one-way damping valve A is arranged on the plunger head A. The second air cavity is filled with nitrogen with certain initial pressure, the third liquid cavity and the fourth liquid cavity are also filled with hydraulic oil, the hydraulic oil and the nitrogen are isolated by the floating piston B, and the plunger head B is provided with a one-way damping valve B. Whether the vehicle is under compression or tension, the gas-liquid buffer can be used for buffering and absorbing energy. When adjacent vehicles are compressed, the plunger A is pressed into the first liquid cavity, hydraulic oil in the first liquid cavity flows into the second liquid cavity through a circular seam formed by a throttle rod hole on the plunger head A and a throttle damping rod and then flows into the second liquid cavity through the one-way damping valve A, so that the oil quantity of the second liquid cavity is increased, the floating piston A moves leftwards, nitrogen in the first liquid cavity is compressed, the energy conversion from kinetic energy to heat energy is completed, when the compression between adjacent vehicles is slowed down or eliminated, the nitrogen applies pressure to the second liquid cavity through the floating piston A, the hydraulic oil is returned to the first liquid cavity, and the unloading is completed. When the adjacent vehicles are stretched, the plunger B is pressed into the third liquid cavity, hydraulic oil in the third liquid cavity flows into the fourth liquid cavity through a circular seam formed by a throttling rod hole on the plunger head B and a throttling damping rod and then flows into the fourth liquid cavity through the one-way damping valve B, so that the oil quantity of the fourth liquid cavity is increased, the floating piston B moves leftwards, nitrogen in the second air cavity is compressed, energy conversion from kinetic energy to heat energy is completed, when stretching between the adjacent vehicles slows down or disappears, the nitrogen applies pressure to the fourth liquid cavity through the floating piston B, and hydraulic oil is returned to the third liquid cavity, and unloading is completed.
The invention has the beneficial effects that: the gas-liquid buffer has the advantages of bidirectional tension and compression, can absorb energy no matter being compressed or stretched, and has larger energy absorption capacity under the same condition. Different diameters and lengths are designed according to actual conditions, and the number of plungers distributed on the outer side is adjusted, so that the mechanical properties of the buffer in the compression and stretching processes are adjusted to meet the requirements of different use conditions.
Drawings
Fig. 1 is a sectional view of a gas-liquid damper according to an embodiment of the present invention.
Fig. 2 is a left side view of a gas-liquid damper according to an embodiment of the present invention.
Fig. 3 is a right side view of a gas-liquid buffer according to an embodiment of the present invention.
Fig. 4 is a schematic diagram of a bidirectional cylinder barrel structure of a gas-liquid buffer according to an embodiment of the present invention.
Fig. 5 is a schematic diagram of a structure employing an embodiment of the present invention.
Fig. 6 is a schematic view of the sleeve structure of the damper according to the embodiment of fig. 5.
Fig. 7 is a schematic diagram of the usage state of the present embodiment.
Fig. 8 is a schematic diagram of the usage state of the present embodiment.
Detailed Description
Example 1
The embodiment provides a gas-liquid buffer with a pull-press bidirectional buffer function, the structure of which is shown in fig. 1-4, and the gas-liquid buffer mainly comprises a plunger A2, a bidirectional cylinder barrel 3, a plunger B15, a throttling damper rod A17, a throttling damper rod B4, a floating piston A24, a floating piston B12, a plunger head A19, a plunger head B7 and the like. The bidirectional cylinder 3 has a cylindrical structure extending in the axial direction of the gas-liquid damper 100, and the center of the bidirectional cylinder 3 has a large diameter cylinder 3-7, one end of the large diameter cylinder 3-7 is an open end, the other end is a closed end, and a throttle rod mounting hole 3-6 is opened in the closed end. The throttle damping rod A17 is arranged on a throttle rod mounting hole 3-6 on the right side in the bidirectional cylinder barrel 3; the circumference of the large-diameter cylinder barrel 3-7 of the bidirectional cylinder barrel 3 is uniformly distributed with 4 identical independent small-diameter cylinder barrels 3-3, one end of each small-diameter cylinder barrel 3-3 is an open end, the other end of each small-diameter cylinder barrel is a closed end structure, and the closed end is provided with a throttle rod mounting hole 3-1. The throttle damping rod B4 is arranged on a throttle rod mounting hole 3-1 of a small-diameter cylinder barrel 3-3 in the bidirectional cylinder barrel 3, and the open ends of the large-diameter cylinder barrel 3-7 and the small-diameter cylinder barrel 3-3 are arranged in opposite directions. The outer diameter direction of the bidirectional cylinder barrel 3 is also provided with guide device grooves 3-2 and 3-4 for installing the guide devices. The end part of the closed end of the large-diameter cylinder barrel 3-7 of the bidirectional cylinder barrel 3 is provided with a thread structure 3-5 for installing a snap ring adapter, but the connecting structure of the end part of the bidirectional cylinder barrel 3 is not limited to the structure, and other connecting modes can be used for the end part of the bidirectional cylinder barrel 3.
The plunger A2 in this embodiment extends from the open end of the large diameter cylinder 3-7 of the double cylinder 3 into the double cylinder 3, and when the damper 100 is operated, the plunger A2 can slide relative to the double cylinder 3 along the axial direction of the double cylinder 3. A plunger head A19 is arranged on one side of the plunger A2 near the closed end of the large-diameter cylinder barrel 3-7, and a one-way damping valve A21 is arranged on the plunger head A19. The plunger A2 is provided with an inflation hole for filling nitrogen on one side far away from the large-diameter cylinder barrel 3-7, and a screw plug 1 for sealing gas is arranged on the inflation hole. The outer diameter of the plunger A2 and the plunger head A19 is in accordance with the inner diameter of the large diameter cylinder 3-7, the plunger A2 is provided with a guide ring 26 and a seal guide device 22, and the plunger head A19 is provided with a seal guide device 20. The inner surface of the bidirectional cylinder 3 and the outer surface of the plunger A2 and a guide ring 26 for guiding and sealing mounted on the plunger A2, a sealing guide 22, and a plunger head a19 and a sealing guide 20 mounted on the plunger head a19 are in sealing engagement with each other, and a first liquid chamber 18 for filling hydraulic oil is formed between the bidirectional cylinder 3 and the plunger head a 19. A floating piston a24 is placed inside the plunger A2, dividing the space inside the plunger A2 into a first air chamber 27 on one side and a second liquid chamber 23 on the other side. The floating piston a24 can slide along the axial direction of the plunger A2, and a seal guiding device 25 is installed on the floating piston a24 to isolate the nitrogen in the first air chamber 27 from the hydraulic oil in the second liquid chamber 23.
The plungers B15 extend from the open ends of the four small diameter cylinders 3-3 of the double cylinder 3 into the double cylinder 3, and the plungers B15 can slide with respect to the double cylinder 3 along the axial direction of the small diameter cylinders 3-3 when the damper 100 is operated. A plunger head B7 is arranged on one side of the plunger B15 close to the closed end of the small-diameter cylinder barrel 3-3, and a one-way damping valve B8 is arranged on the plunger head B7. The plunger B15 is provided with an inflation hole for filling nitrogen gas on a side remote from the small diameter cylinder 3-3, and a screw plug 16 for sealing gas is mounted on the inflation hole. The outer diameter of the plunger B15 and the plunger head B7 is consistent with the inner diameter of the small-diameter cylinder barrel 3-3, the guide ring 13 and the sealing guide device 9 are arranged on the plunger B15, and the sealing guide device 6 is arranged on the plunger head B7. The inner surface of the bidirectional cylinder 3 and the outer surface of the plunger B15 and the guide ring 13 for guiding and sealing mounted on the plunger B15, the sealing guide 9, the plunger head B7 and the sealing guide 6 mounted on the plunger head B7 are in sealing fit with each other, and a third liquid chamber 5 for filling hydraulic oil is formed between the bidirectional cylinder 3 and the plunger head B7. The floating piston B12 is placed inside the plunger B15, dividing the space inside the plunger B15 into a second air chamber 14 on one side and a fourth liquid chamber 10 on the other side. The floating piston B12 can slide along the axial direction of the plunger B15, and the sealing guide device 11 is arranged on the floating piston B12 and used for isolating nitrogen in the second air cavity 14 and hydraulic oil in the fourth liquid cavity 10.
The embodiment also discloses a novel buffering device structure, the structure is shown in fig. 5-6, and the structure mainly comprises a sleeve 28 with a clamping ring head structure, a guide ring 29 and a guide ring 30 which are arranged on a gas-liquid buffer 100, the gas-liquid buffer 100, a round nut 31, a guide ring 32 arranged on the round nut 31 and a clamping ring head 33. The sleeve 28 is a tubular structure, wherein the closed end is provided with a clasp head structure 28-1 for connecting with a coupler, and the connection mode can be various, not limited to the connection mode; the right end of the sleeve 28 is an open end, and the end of the sleeve 28 is provided with a threaded connection interface 28-2 for installing the round nut 31, and the right end installation structure of the sleeve 28 is not limited to such threaded connection, and other manners such as flange connection and the like can be used for fixing the round nut 31.
The operation of the buffer device and the bidirectional gas-liquid buffer 100 to be used will be described with reference to fig. 1, 7 and 8. The operation of the gas-liquid damper 100 is performed by two processes, namely compression and tension, as follows:
As shown in fig. 7, assuming that the right end of the buffer device is a fixed end, when two adjacent vehicles are compressed, the compression force F transmitted from the vehicles pushes the buffer device to move from left to right, so that the plunger A2 is pressed into the first liquid cavity 18 in a compression stroke, hydraulic oil in the first liquid cavity 18 flows into the second liquid cavity 23 through a circular seam formed by a throttling rod hole on the plunger head a19 and a throttling damping rod a17 and then passes through the one-way damping valve a21, so that the oil mass of the second liquid cavity 23 is increased, thereby enabling the floating piston a24 to move leftwards, nitrogen in the first air cavity 27 is compressed, energy conversion from kinetic energy to thermal energy is completed, and when the compression force between the adjacent vehicles is reduced or eliminated, the nitrogen applies pressure to the second liquid cavity 23 through the floating piston a24, and hydraulic oil is pressed back into the first liquid cavity 18, so that unloading is completed.
As shown in fig. 8, assuming that the right end of the buffer device is a fixed end, when two adjacent vehicles are stretched, the buffer device is pulled by the stretching force F transmitted from the vehicles to move from right to left, so that the plunger B15 is pressed into the third liquid cavity 5 in a compression stroke, hydraulic oil in the third liquid cavity 5 flows into the fourth liquid cavity 10 through a circular seam formed by a throttling rod hole on the plunger head B7 and the throttling damping rod B4 and then passes through the one-way damping valve B8, so that the oil mass of the fourth liquid cavity 10 is increased, thereby enabling the floating piston B12 to move leftwards, nitrogen in the second air cavity 14 is compressed, energy conversion from kinetic energy to thermal energy is completed, and when the stretching force between the adjacent vehicles is slowed down or eliminated, the nitrogen applies pressure to the fourth liquid cavity 10 through the floating piston B12, and hydraulic oil is pressed back into the third liquid cavity 5, so that unloading is completed.
In addition to the embodiments described above, other embodiments of the invention are possible. All technical schemes formed by equivalent substitution or equivalent transformation fall within the protection scope of the invention.
Claims (13)
1. The utility model provides a gas-liquid buffer with draw and press two-way buffer function, mainly comprises two-way cylinder (3), plunger A (2), plunger B (15), throttle damping stick A (17) and throttle damping stick B (4), its characterized in that:
The bidirectional cylinder barrel (3) is provided with a cylindrical structure which extends to two sides independently along the axial direction of the gas-liquid buffer, wherein the center of the cylindrical structure is a large-diameter cylinder barrel, at least two independent small-diameter cylinder barrels are uniformly distributed around the large-diameter cylinder barrel, one end of each of the large-diameter cylinder barrel and the small-diameter cylinder barrel is closed, the other end of each of the large-diameter cylinder barrel and the small-diameter cylinder barrel is open, and the open ends of the large-diameter cylinder barrel and the small-diameter cylinder barrel are arranged oppositely; the closed ends of the two cylinders are respectively provided with a throttle rod hole, and the throttle damper rod A (17) and the throttle damper rod B (4) are respectively arranged in the throttle rod holes of the large-diameter cylinder and the small-diameter cylinder;
The plunger A (2) slides in the large-diameter cylinder barrel along the axial direction of the cylinder barrel, and the plunger A (2) is matched with the throttling damper rod A (17) in the large-diameter cylinder barrel;
The number of the plungers B (15) is matched with that of the small-diameter cylinders, the plungers B (15) slide in the corresponding small-diameter cylinders along the axial direction of the small-diameter cylinders, and the plungers B (15) and the throttling damper rods B (4) are arranged in the small-diameter cylinders.
2. The gas-liquid buffer with pull-press bidirectional buffering function as set forth in claim 1, wherein: the plunger A (2) is provided with a plunger head A (19) at one end close to the closed end of the large-diameter cylinder barrel, the plunger head A (19) is provided with a flow guide cavity matched with the throttling damper rod A (17), the flow guide cavity far away from the closed end of the large-diameter cylinder barrel is provided with a one-way damping valve A (21), and the plunger A (2) and the plunger head A (19) are respectively provided with a sealing guide device in sealing fit with the large-diameter cylinder barrel, so that a first liquid cavity (18) for filling hydraulic oil is formed between the plunger head A (19) and the large-diameter cylinder barrel;
A floating piston A (24) is arranged in the plunger A (2), the floating piston A (24) slides in the plunger A (2) along the axial direction of the plunger A (2), and a sealing guide device is arranged on the floating piston A (24) and is in sealing fit with the plunger A (2), so that a cavity in the plunger A (2) is divided into a second liquid cavity (23) adjacent to the plunger head A (19) and a first air cavity (27) positioned on the other side of the floating piston A (24) and used for filling gas.
3. The gas-liquid buffer with pull-press bidirectional buffering function as set forth in claim 1, wherein: the plunger B (15) is provided with a plunger head B (7) at one end close to the closed end of the small-diameter cylinder barrel, the plunger head B (7) is provided with a flow guide cavity matched with the throttling damper B (4), the flow guide cavity far away from the closed end of the small-diameter cylinder barrel is provided with a one-way damping valve B (8), and the plunger B (15) and the plunger head B (7) are respectively provided with a sealing guide device in sealing fit with the small-diameter cylinder barrel, so that a third liquid cavity (5) for filling hydraulic oil is formed between the plunger head B (7) and the small-diameter cylinder barrel;
A floating piston B (12) is arranged in the plunger B (15), the floating piston B (12) slides in the plunger B (15) along the axial direction of the plunger B (15), and a sealing guide device is arranged on the floating piston B (12) and is in sealing fit with the plunger B (15), so that a cavity in the plunger B (15) is divided into a fourth liquid cavity (10) positioned on one side of the plunger head B (7) and a second air cavity (14) positioned on the other side and used for filling gas.
4. A gas-liquid buffer with pull-press bidirectional buffering function as set forth in claim 2 or 3, wherein: the diameters of the throttling damper rod A (17) and the throttling damper rod B (4) are smaller than the inner diameter of the diversion cavity on the corresponding plunger head.
5. The gas-liquid buffer with pull-press bidirectional buffering function as set forth in claim 1, wherein: the outer diameter circumference of the bidirectional cylinder barrel (3) is provided with a guide device mounting groove.
6. The gas-liquid buffer with pull-press bidirectional buffering function as set forth in claim 1, wherein: the outside of the closed end of the large-diameter cylinder barrel of the two-way cylinder barrel (3) is provided with a fixed connection structure.
7. The gas-liquid buffer with pull-press bidirectional buffer function as set forth in claim 6, wherein: the fixed connection structure is a threaded structure or a clamping structure.
8. A gas-liquid buffer with pull-press bidirectional buffering function as set forth in claim 2 or 3, wherein: the first air cavity (27) of the plunger A (2) and the second air cavity (14) of the plunger B (15) are respectively provided with an air charging hole, and a screw plug is arranged on the air charging holes.
9. The gas-liquid buffer with pull-press bidirectional buffer function as set forth in claim 2, wherein: the plunger A (2) is on the same axis as the throttling damper rod A (17), the one-way damping valve A (21) and the plunger head A (19).
10. The gas-liquid buffer with pull-press bidirectional buffering function as set forth in claim 3, wherein: the plunger B (15) is positioned on the same axis as the throttle damping rod B (4), the one-way damping valve B (8) and the plunger head B (7).
11. A buffer device using the gas-liquid buffer with pull-press bidirectional buffer function as set forth in any one of claims 1-10, characterized in that: the gas-liquid buffer device comprises a sleeve (28), a guide ring, a gas-liquid buffer (100), a round nut (31) and a clamping ring head (33), wherein the sleeve is a cylinder with one end open and one end closed, a connecting clamping ring structure is fixedly arranged outside the closed end of the sleeve, the gas-liquid buffer (100) is arranged in the sleeve (28), and the guide ring is arranged between the sleeve and the gas-liquid buffer (100); the plunger A (2) of the gas-liquid buffer (100) is propped against the closed end of the sleeve, the round nut (31) is arranged at the closed end of the large-diameter cylinder barrel of the gas-liquid buffer (100) through a guide ring, the outer ring of the round nut (31) is fixedly connected with the open end of the sleeve (28), and the tail end of the plunger B (15) on the outer ring of the gas-liquid buffer (100) is propped against the round nut (31); the clamping ring head (33) is fixedly connected to the closed end of the large-diameter cylinder barrel.
12. The cushioning device of claim 11, wherein: the closed end of the sleeve (28) and the snap ring head (33) are both provided with operation holes.
13. The cushioning device of claim 11, wherein: the round nut (31) is fixedly connected with the opening end of the sleeve (28) by adopting a threaded structure.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811267127.4A CN111098881B (en) | 2018-10-29 | 2018-10-29 | Gas-liquid buffer with pull-press bidirectional buffering function and buffering device thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811267127.4A CN111098881B (en) | 2018-10-29 | 2018-10-29 | Gas-liquid buffer with pull-press bidirectional buffering function and buffering device thereof |
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| CN111098881A CN111098881A (en) | 2020-05-05 |
| CN111098881B true CN111098881B (en) | 2024-05-28 |
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| CN112594245B (en) * | 2020-11-24 | 2022-06-28 | 中国人民解放军96901部队24分队 | Bidirectional buffer hydraulic cylinder |
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| CN2089467U (en) * | 1991-05-11 | 1991-11-27 | 南通港务局狼山港务公司 | Butterfly spring hydraulic buffer |
| CN103043072A (en) * | 2012-12-21 | 2013-04-17 | 青岛四方车辆研究所有限公司 | Tension compression conversion type rubber buffer |
| CN203009684U (en) * | 2012-08-21 | 2013-06-19 | 北京金自天和缓冲技术有限公司 | Pulling and pressing bidirectional buffer |
| CN104401348A (en) * | 2014-11-19 | 2015-03-11 | 齐齐哈尔轨道交通装备有限责任公司 | Railway vehicle and hook buffer device thereof |
| WO2016101924A1 (en) * | 2014-12-26 | 2016-06-30 | 中车戚墅堰机车车辆工艺研究所有限公司 | Railway vehicle buffer apparatus and assembling method and buffer system thereof |
| KR101689320B1 (en) * | 2016-03-17 | 2017-01-02 | 주식회사 케이오비에이 | Hydraulic buffer with activating valve |
| EP3187748A1 (en) * | 2015-12-29 | 2017-07-05 | Dellner Dampers AB | Recoil suppressing hydraulic damper for a train coupler |
| CN209064106U (en) * | 2018-10-29 | 2019-07-05 | 常州中车铁马科技实业有限公司 | With Liquid and gas damper and its buffer unit with tension compression bidirectional pooling feature |
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2018
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2089467U (en) * | 1991-05-11 | 1991-11-27 | 南通港务局狼山港务公司 | Butterfly spring hydraulic buffer |
| CN203009684U (en) * | 2012-08-21 | 2013-06-19 | 北京金自天和缓冲技术有限公司 | Pulling and pressing bidirectional buffer |
| CN103043072A (en) * | 2012-12-21 | 2013-04-17 | 青岛四方车辆研究所有限公司 | Tension compression conversion type rubber buffer |
| CN104401348A (en) * | 2014-11-19 | 2015-03-11 | 齐齐哈尔轨道交通装备有限责任公司 | Railway vehicle and hook buffer device thereof |
| WO2016101924A1 (en) * | 2014-12-26 | 2016-06-30 | 中车戚墅堰机车车辆工艺研究所有限公司 | Railway vehicle buffer apparatus and assembling method and buffer system thereof |
| EP3187748A1 (en) * | 2015-12-29 | 2017-07-05 | Dellner Dampers AB | Recoil suppressing hydraulic damper for a train coupler |
| KR101689320B1 (en) * | 2016-03-17 | 2017-01-02 | 주식회사 케이오비에이 | Hydraulic buffer with activating valve |
| CN209064106U (en) * | 2018-10-29 | 2019-07-05 | 常州中车铁马科技实业有限公司 | With Liquid and gas damper and its buffer unit with tension compression bidirectional pooling feature |
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| CN111098881A (en) | 2020-05-05 |
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