Double-buffering shock absorber for floating floor of train

Abstract

The invention relates to the technical field of trains, and discloses a double-buffering train floating floor shock absorber which comprises a buffering box, an air cylinder is fixed to the bottom of the buffering box and penetrates through the bottom of the buffering box, a fourth piston block is slidably connected into the air cylinder, and a liquid storage box is fixed to the bottom of the buffering box. And a cooling mechanism is arranged on the outer side of the liquid storage tank. According to the double-buffering train floating floor shock absorber, in the running process of a train, a buffering spring stretches out and draws back, a piston plate vertically slides back and forth in a buffering box, when the piston plate moves downwards, a first through hole is automatically opened, and when the piston plate moves upwards, a second through hole is automatically opened; the upward moving distance of the piston plate is smaller than the downward moving distance each time, the buffering and damping effect is conveniently achieved, gas is stored in the air cylinder, the fourth piston block reciprocates in the air cylinder, damping force is generated through gas compression and release, vibration is attenuated, and the double buffering effect is conveniently achieved.

Description

Technical Field

[0001] The invention relates to the technical field related to trains, in particular to a double-buffered train floating floor shock absorber. Background Art

[0002] Trains, that is, vehicle groups, are divided into two types: railway trains, which are the general form; road trains, which are vehicle groups, vehicle groups, and road vehicle groups. Trains are the most important mechanical means of transportation in human history. In the early days, they were called steam locomotives, also called trains. In the process of using trains, in order to avoid vibration and noise caused by vibration, a floating structure system, that is, a floating floor, is usually used.

[0003] The buffering effect of existing shock absorbers is generally fixed, difficult to adjust flexibly, and difficult to achieve a double buffering effect. In view of the above problems, it is necessary to improve the existing equipment. Summary of the invention

[0004] The object of the present invention is to provide a double-buffered train floating floor shock absorber to solve the problem that the buffering effect of the existing shock absorber mentioned in the above background technology is generally fixed, difficult to adjust flexibly, and difficult to achieve a double buffering effect.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a double-buffered train floating floor shock absorber, comprising a buffer box, a mounting frame is fixed to the bottom of the buffer box, the top of the buffer box is connected to the mounting plate through a buffer spring, a buffer mechanism is fixed to the bottom of the mounting plate, the buffer mechanism comprises a damping rod, the damping rod passes through the top of the buffer box, the buffer spring is wrapped around the outside of the damping rod, a piston plate is fixed to the bottom of the damping rod, the piston plate is slidably connected in the buffer box, and a first through hole and a second through hole are opened on the piston plate.

[0006] A cylinder is fixed at the bottom of the buffer box, the cylinder passes through the bottom of the buffer box, a fourth piston block is slidably connected in the cylinder, a liquid storage tank is fixed at the bottom of the buffer box, and a cooling mechanism is arranged on the outside of the liquid storage tank.

[0007] Preferably, the upper end surface and the lower end surface of the piston plate are both provided with grooves, and a first compression spring is fixed in the groove, a movable column is fixed to the inner end of the first compression spring, and the movable column is slidably connected in the groove, the first compression spring is wrapped around the outer side of the movable column, and the movable column passes through the end surface of the piston plate and is connected to the sealing plate.

[0008] By adopting the above technical solution, the device is installed on a train. When the train is running, the piston plate slides back and forth up and down in the buffer box, and the first through hole and the second through hole are opened in turn. Since the second through hole is smaller than the first through hole, the upward movement distance of the piston plate is smaller than the downward movement distance each time, thereby achieving a buffering effect.

[0009] Preferably, a first oil groove is provided in the piston plate, and a first piston block is slidably connected in the first oil groove, a second piston block is fixed to the bottom of the first piston block, and the second piston block is evenly distributed circumferentially on the first piston block, the bottom of the second piston block is connected to the third piston block through a connecting rope, a second oil groove is provided in the piston plate, and the second piston block and the third piston block are both slidably connected in the second oil groove.

[0010] By adopting the above technical solution, when the first piston block and the second piston block move up and down as a whole, the third piston block slides in the second oil groove.

[0011] Preferably, a rotating drum is rotatably connected in the second oil tank, and the connecting rope passes around the rotating drum.

[0012] By adopting the above technical solution, the rotating drum plays a supporting and guiding role for the connecting rope.

[0013] Preferably, a baffle is fixed to the outer end surface of the third piston block, and a third through hole and a fourth through hole are opened on the baffle, the third through hole is interconnected with the first through hole, the fourth through hole is interconnected with the second through hole, and the first through hole and the second through hole are evenly distributed circumferentially on the piston plate.

[0014] By adopting the above technical solution, the baffle can move to adjust the opening size of the first through hole and the second through hole.

[0015] Preferably, a limit plate is fixed in the cylinder, and the limit plate passes through the fourth piston block.

[0016] By adopting the above technical solution, the limiting plate plays a role of limiting the fourth piston block.

[0017] Preferably, the cooling mechanism includes a support box, and the support box is fixed to the bottom of the liquid storage tank, an electric telescopic column is fixed on the front inner wall of the support box, and an extrusion rod is fixed to the rear end of the electric telescopic column, a fifth piston block is fixed to the rear end of the extrusion rod, an oil cylinder is fixed to the rear side of the support box, the fifth piston block is slidably connected in the oil cylinder, a connecting pipe is fixed to the rear side of the oil cylinder, and the connecting pipe passes through the mounting plate and the damping rod and is connected to the first oil tank.

[0018] By adopting the above technical solution, when the extrusion rod moves backward, the fifth piston block moves backward and the first piston block moves downward.

[0019] Preferably, second compression springs are symmetrically fixed on the two inner walls of the support box, and a movable block is fixed to the inner end of the second compression spring, the movable block is wedge-shaped and connected to the extrusion rod, and the outer side of the movable block is connected to the heat conducting plate through a connecting frame, the heat conducting plate is slidably connected to the outer side of the liquid storage tank, and the heat conducting plate is circumferentially evenly distributed on the liquid storage tank, a heat conducting sheet is fixed on the outer end surface of the heat conducting plate, and the heat conducting sheets are evenly distributed on the heat conducting plate, an arc channel is opened on the heat conducting sheet, and the arc channels are evenly distributed on the heat conducting sheet, and the bending directions of the arc channels on two adjacent heat conducting sheets are opposite.

[0020] By adopting the above technical solution, when the extrusion rod moves backward, the movable block, the connecting frame, the heat conducting plate and the heat conducting sheet move as a whole, which facilitates increasing the unfolding area of ​​the heat conducting sheet.

[0021] Preferably, a slideway is provided at the bottom of the liquid storage tank, and the connecting frame passes through the slideway.

[0022] By adopting the above technical solution, the slideway is used to limit the connecting frame.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] 1. The double-buffered train floating floor shock absorber can achieve the purpose of double buffering and adjustable buffering effect through the mutual use of the buffer box, buffer spring, piston plate, first through hole, second through hole, baffle, cylinder and fourth piston block. After the device is installed on the train car and the driving seat, when the train is running, the buffer spring is extended and retracted, hydraulic oil is stored in the buffer box, and the piston plate slides up and down in the buffer box. When the piston plate moves down, the first through hole is automatically opened, and when the piston plate moves up, the second through hole is automatically opened. Since the second through hole is always smaller than the first through hole, the upward movement distance of the piston plate each time is smaller than the downward movement distance, which is convenient for achieving the effect of buffering and shock absorption. Gas is stored in the cylinder, and the fourth piston block reciprocates in the cylinder. The compression and release of the gas generate damping force to attenuate the vibration, which is convenient for achieving the effect of double buffering. The baffle is movable, which is convenient for adjusting the size of the first through hole and the second through hole, thereby adjusting the buffering effect.

[0025] 2. The double-buffered train floating floor shock absorber can achieve the purpose of cooling and heat dissipation through the coordinated use of the cylinder, the fourth piston block, the liquid storage tank, the heat conduction plate, the heat conduction sheet and the arc channel. When the fourth piston block moves downward, the gas in the cylinder is compressed and the gas becomes hot. The liquid storage tank stores coolant, which can be used to cool the gas. The heat conduction plate and the heat conduction sheet can be used to achieve the effect of heat conduction. The wind shuttles through the arc channel, which is convenient for achieving the effect of heat dissipation.

[0026] 3. The double-buffered train floating floor shock absorber can achieve the purpose of increasing the heat dissipation intensity as the buffering effect increases through the coordinated use of the piston plate, the first through hole, the second through hole, the second piston block, the third piston block, the baffle, the extrusion rod, the fifth piston block, the movable block, the connecting frame, the heat conducting plate and the heat conducting sheet. When the extrusion rod moves backward, the fifth piston block moves backward, the piston plate and the second piston block move downward, the third piston block and the baffle move, and at the same time, the extrusion rod squeezes the movable block, the connecting frame, the heat conducting plate and the heat conducting sheet move. The greater the moving distance of the baffle, the greater the opening degree of the first through hole and the second through hole, the better the buffering effect, the larger the expansion area of ​​the heat conducting sheet, and the better the heat dissipation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a rear-view stereoscopic structural schematic diagram of the present invention;

[0028] Figure 2 It is a front cross-sectional structural schematic diagram of the present invention;

[0029] Figure 3 It is a schematic diagram of the structure of the buffer mechanism of the present invention;

[0030] Figure 4 It is a schematic diagram of the connection structure of the first piston block, the second piston block, the connecting rope, the third piston block, the baffle, the third through hole and the fourth through hole of the present invention;

[0031] Figure 5 It is a schematic diagram of the connection structure of the damping rod, the piston plate, the second through hole, the sealing plate and the connecting pipe of the present invention;

[0032] Figure 6 It is a schematic diagram of the connection structure of the support box, the electric telescopic column, the extrusion rod, the fifth piston block, the oil cylinder, the connecting pipe, the second compression spring, the movable block and the connecting frame of the present invention;

[0033] Figure 7 It is a schematic diagram of the connection structure of the heat conducting plate, the heat conducting sheet and the arc-shaped channel of the present invention;

[0034] Figure 8 It is a schematic diagram of the connection structure of the cylinder, the limit plate and the fourth piston block of the present invention.

[0035] In the figure: 1, buffer box; 2, mounting frame; 3, buffer spring; 4, mounting plate; 5, buffer mechanism; 501, damping rod; 502, piston plate; 503, first through hole; 504, second through hole; 505, groove; 506, first compression spring; 507, movable column; 508, sealing plate; 509, first oil groove; 510, first piston block; 511, second piston block; 512, second oil groove; 513, connecting rope; 514, third piston block; 515, rotating drum; 516, baffle; 5 17. third through hole; 518. fourth through hole; 6. cylinder; 7. limit plate; 8. fourth piston block; 9. liquid storage tank; 10. cooling mechanism; 1001. support box; 1002. electric telescopic column; 1003. extrusion rod; 1004. fifth piston block; 1005. oil cylinder; 1006. connecting pipe; 1007. second compression spring; 1008. movable block; 1009. connecting frame; 1010. heat conducting plate; 1011. slideway; 1012. heat conducting sheet; 1013. arc channel. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technical personnel in this field without creative work are within the scope of protection of the present invention.

[0037] See also Figures 1 to 8 The present invention provides a technical solution: a double-buffered train floating floor shock absorber, comprising a buffer box 1, a mounting frame 2 is fixed to the bottom of the buffer box 1, the top of the buffer box 1 is connected to the mounting plate 4 through a buffer spring 3, a buffer mechanism 5 is fixed to the bottom of the mounting plate 4, the buffer mechanism 5 comprises a damping rod 501, the damping rod 501 passes through the top of the buffer box 1, the buffer spring 3 is wrapped around the outside of the damping rod 501, a piston plate 502 is fixed to the bottom of the damping rod 501, the piston plate 502 is slidably connected in the buffer box 1, and a first through hole 503 and a second through hole 504 are opened on the piston plate 502.

[0038] A cylinder 6 is fixed to the bottom of the buffer box 1, and the cylinder 6 passes through the bottom of the buffer box 1. A fourth piston block 8 is slidably connected inside the cylinder 6. A liquid storage tank 9 is fixed to the bottom of the buffer box 1, and a cooling mechanism 10 is arranged on the outside of the liquid storage tank 9.

[0039] In this embodiment, Figure 2 , Figure 3 and Figure 5As shown, the upper end surface of the piston plate 502 and the lower end surface of the piston plate 502 are both provided with a groove 505, and a first compression spring 506 is fixed in the groove 505, and a movable column 507 is fixed at the inner end of the first compression spring 506, and the movable column 507 is slidably connected in the groove 505, the first compression spring 506 is wrapped around the outer side of the movable column 507, and the movable column 507 passes through the end surface of the piston plate 502 and is connected to the sealing plate 508, and the first compression spring 506 plays a role of supporting the sealing plate 508. Installed on the train, when the train is running, the piston plate 502 moves up and down in the buffer box 1. When the piston plate 502 moves down, the sealing plate 508 corresponding to the first through hole 503 automatically opens, and the first through hole 503 is opened. When the piston plate 502 moves up, the sealing plate 508 corresponding to the second through hole 504 automatically opens, and the second through hole 504 is opened. Since the aperture of the first through hole 503 is larger than the aperture of the second through hole 504, the distance the piston plate 502 moves up each time is smaller than the distance it moves down, thereby achieving a buffering effect.

[0040] In this embodiment, Figure 2 , Figure 3 and Figure 4 As shown, a first oil groove 509 is provided in the piston plate 502, and a first piston block 510 is slidably connected in the first oil groove 509, a second piston block 511 is fixed to the bottom of the first piston block 510, and the second piston block 511 is evenly distributed on the first piston block 510 in a circumferential direction, the bottom of the second piston block 511 is connected to the third piston block 514 through a connecting rope 513, a second oil groove 512 is provided in the piston plate 502, the second piston block 511 and the third piston block 514 are both slidably connected in the second oil groove 512, when the first piston block 510 moves downward, the second piston block 511 moves downward accordingly, hydraulic oil is stored in the second oil groove 512, and the third piston block 514 can move under the action of oil pressure.

[0041] In this embodiment, Figure 2 and Figure 3 As shown, a rotating drum 515 is rotatably connected in the second oil groove 512 , and a connecting rope 513 passes around the rotating drum 515 . The connecting rope 513 can strengthen the connection between the second piston block 511 and the third piston block 514 , and the rotating drum 515 supports and guides the connecting rope 513 .

[0042] In this embodiment, Figure 2 , Figure 3 and Figure 4As shown, a baffle plate 516 is fixed to the outer end face of the third piston block 514, and a third through hole 517 and a fourth through hole 518 are provided on the baffle plate 516, the third through hole 517 is connected to the first through hole 503, and the fourth through hole 518 is connected to the second through hole 504, and the first through hole 503 and the second through hole 504 are evenly distributed circumferentially on the piston plate 502. The movement of the third piston block 514 can drive the baffle plate 516 to move, so as to facilitate the adjustment of the opening size of the first through hole 503 and the second through hole 504, thereby controlling the buffering force. The larger the opening of the first through hole 503 and the second through hole 504 is, the greater the buffering force is.

[0043] In this embodiment, Figure 2 and Figure 8 As shown, a limit plate 7 is fixed in the cylinder 6, and the limit plate 7 passes through the fourth piston block 8. The fourth piston block 8 can reciprocate in the cylinder 6. Gas compression and release generate damping force to attenuate vibration. The limit plate 7 limits the fourth piston block 8.

[0044] In this embodiment, Figure 1 , Figure 2 , Figure 5 and Figure 6 As shown, the cooling mechanism 10 includes a support box 1001, and the support box 1001 is fixed to the bottom of the liquid storage tank 9, an electric telescopic column 1002 is fixed on the front inner wall of the support box 1001, and an extrusion rod 1003 is fixed to the rear end of the electric telescopic column 1002, and a fifth piston block 1004 is fixed to the rear end of the extrusion rod 1003, and an oil cylinder 1005 is fixed to the rear side of the support box 1001, and the fifth piston block 1004 is slidably connected in the oil cylinder 1005, and a connecting pipe 1006 is fixed to the rear side of the oil cylinder 1005, and the connecting pipe 1006 penetrates the mounting plate. 4 and the damping rod 501 are connected to the first oil groove 509, gas is stored in the cylinder 6, when the piston plate 502 moves downward, the fourth piston block 8 moves downward, the gas in the cylinder 6 is compressed and heated, the liquid storage tank 9 stores coolant, which can be used to cool the gas in the cylinder 6, hydraulic oil is stored in the oil cylinder 1005, and the connecting pipe 1006 serves to connect the oil cylinder 1005 and the first oil groove 509, when the extrusion rod 1003 moves backward under the extension of the electric telescopic column 1002, the fifth piston block 1004 moves backward, and the first piston block 510 moves downward.

[0045] In this embodiment, Figure 1 , Figure 2 , Figure 5 , Figure 6 and Figure 7As shown, second compression springs 1007 are symmetrically fixed on the two inner walls of the support box 1001, and a movable block 1008 is fixed to the inner end of the second compression spring 1007, the movable block 1008 is wedge-shaped and connected to the extrusion rod 1003, and the outer side of the movable block 1008 is connected to the heat conducting plate 1010 through a connecting frame 1009, the heat conducting plate 1010 is slidably connected to the outer side of the liquid storage tank 9, and the heat conducting plate 1010 is evenly distributed on the liquid storage tank 9 in the circumferential direction, a heat conducting sheet 1012 is fixed to the outer end surface of the heat conducting plate 1010, and the heat conducting sheets 1012 are evenly spaced on the heat conducting plate 1010, an arc channel 1013 is opened on the heat conducting sheet 1012, and the arc channel 1013 is evenly spaced on the heat conducting sheet 1012, and two adjacent heat conducting sheets 1010 are connected to the heat conducting sheet 1012. The bending direction of the arc channel 1013 on 12 is opposite, and the liquid storage tank 9 is made of heat-conducting material, which can conduct the heat of the coolant in the liquid storage tank 9 to the heat-conducting plate 1012, and the wind can shuttle in the arc channel 1013, which is convenient for taking away the heat on the heat-conducting plate 1012, so as to achieve the heat dissipation effect. When the extrusion rod 1003 moves backward, it squeezes the movable block 1008, and the connecting frame 1009 and the heat-conducting plate 1010 move with the movable block 1008, which is convenient for adjusting the extended area of ​​the heat-conducting plate 1012, thereby adjusting the heat dissipation intensity. The longer the extrusion rod 1003 moves backward, the longer the fifth piston block 1004 moves backward, the longer the piston plate 502 moves downward, the greater the opening degree of the first through hole 503 and the second through hole 504, the better the buffering effect, and the greater the heat dissipation intensity.

[0046] In this embodiment, Figure 1 and Figure 2 As shown, a slideway 1011 is provided at the bottom of the liquid storage tank 9, and the connecting frame 1009 passes through the slideway 1011. The slideway 1011 plays a role of limiting when the connecting frame 1009 moves.

[0047] The use method and advantages of the present invention: The double-buffered train floating floor shock absorber has the following working process:

[0048] like Figures 1 to 8As shown: first, the mounting frame 2 is installed on the train driving base, and the mounting plate 4 is installed on the bottom of the train car. Hydraulic oil is stored in the buffer box 1. When the train is running, the buffer spring 3 is extended and retracted, and the piston plate 502 slides up and down in the buffer box 1. When the piston plate 502 moves down, the sealing plate 508 corresponding to the first through hole 503 is automatically opened. When the piston plate 502 moves up, the sealing plate 508 corresponding to the second through hole 504 is automatically opened. Since the second through hole 504 is always smaller than the first through hole 503, the upward movement distance of the piston plate 502 is always smaller than the downward movement distance, which is convenient for achieving the effect of buffering and shock absorption. When the extrusion rod 1003 moves backward, the fifth piston block 1004 moves backward, the first piston block 510 and the second piston block 511 move downward, and hydraulic oil is stored in the second oil groove 512. The movement of the third piston block 514 drives the baffle 516 to move, thereby increasing the first through hole 503 and the second through hole 503. The opening size of the hole 504 makes the buffering effect better. Gas is stored in the cylinder 6. The fourth piston block 8 reciprocates in the cylinder 6. The compression and release of the gas generate a damping force to attenuate the vibration, so as to achieve a double buffering effect. When the fourth piston block 8 moves downward, the gas in the cylinder 6 is compressed and becomes hot. The liquid storage tank 9 stores coolant, which can be used to cool the gas in the cylinder 6. The liquid storage tank 9, the heat conducting plate 1010 and the heat conducting sheet 1012 made of heat conductive material can play a role in heat conduction. The wind shuttles in the arc channel 1013 to achieve the effect of heat dissipation. When the extrusion rod 1003 moves backward, it squeezes the movable block 1008, and the movable block 1008, the connecting frame 1009, the heat conducting plate 1010 and the heat conducting sheet 1012 move as a whole. The greater the backward movement distance of the extrusion rod 1003, the greater the movement distance of the baffle 516, the better the buffering effect, and the greater the extended length of the heat conducting sheet 1012, the better the heat dissipation effect.

[0049] In summary, the double-buffered train floating floor shock absorber achieves the purposes of double buffering, adjustable buffering effect, cooling and heat dissipation, and heat dissipation intensity increases with the increase of buffering effect, thus meeting people's usage needs.

[0050] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A double-buffered train floating floor shock absorber, comprising a buffer box (1), characterized in that: A mounting frame (2) is fixed to the bottom of the buffer box (1); the top of the buffer box (1) is connected to the mounting plate (4) via a buffer spring (3); a buffer mechanism (5) is fixed to the bottom of the mounting plate (4); the buffer mechanism (5) comprises a damping rod (501); the damping rod (501) passes through the top of the buffer box (1); the buffer spring (3) is wrapped around the outside of the damping rod (501); a piston plate (502) is fixed to the bottom of the damping rod (501); the piston plate (502) is slidably connected to the inside of the buffer box (1); and a first through hole (503) and a second through hole (504) are provided on the piston plate (502); A cylinder (6) is fixed at the bottom of the buffer box (1), the cylinder (6) passes through the bottom of the buffer box (1), a fourth piston block (8) is slidably connected inside the cylinder (6), a liquid storage box (9) is fixed at the bottom of the buffer box (1), and a cooling mechanism (10) is arranged on the outside of the liquid storage box (9).

2. The double-buffered train floating floor shock absorber according to claim 1 is characterized in that: The upper end surface of the piston plate (502) and the lower end surface of the piston plate (502) are both provided with a groove (505), and a first compression spring (506) is fixed in the groove (505), a movable column (507) is fixed at the inner end of the first compression spring (506), and the movable column (507) is slidably connected in the groove (505), the first compression spring (506) is wrapped around the outer side of the movable column (507), and the movable column (507) passes through the end surface of the piston plate (502) and is connected to the sealing plate (508).

3. The double-buffered train floating floor shock absorber according to claim 1 is characterized in that: A first oil groove (509) is provided in the piston plate (502), and a first piston block (510) is slidably connected in the first oil groove (509); a second piston block (511) is fixed to the bottom of the first piston block (510), and the second piston block (511) is evenly distributed on the first piston block (510) in a circumferential direction; the bottom of the second piston block (511) is connected to the third piston block (514) via a connecting rope (513); a second oil groove (512) is provided in the piston plate (502), and the second piston block (511) and the third piston block (514) are both slidably connected in the second oil groove (512).

4. The double-buffered train floating floor shock absorber according to claim 3 is characterized in that: A rotating drum (515) is rotatably connected in the second oil groove (512), and the connecting rope (513) passes around the rotating drum (515).

5. The double-buffered train floating floor shock absorber according to claim 3 is characterized in that: A baffle (516) is fixed to the outer end surface of the third piston block (514), and a third through hole (517) and a fourth through hole (518) are provided on the baffle (516); the third through hole (517) is interconnected with the first through hole (503), and the fourth through hole (518) is interconnected with the second through hole (504); the first through hole (503) and the second through hole (504) are evenly distributed circumferentially on the piston plate (502).

6. The double-buffered train floating floor shock absorber according to claim 1, characterized in that: A limiting plate (7) is fixed in the cylinder (6), and the limiting plate (7) passes through the fourth piston block (8).

7. The double-buffered train floating floor shock absorber according to claim 1 is characterized in that: The cooling mechanism (10) comprises a support box (1001), and the support box (1001) is fixed to the bottom of the liquid storage tank (9); an electric telescopic column (1002) is fixed on the front inner wall of the support box (1001), and an extrusion rod (1003) is fixed to the rear end of the electric telescopic column (1002); a fifth piston block (1004) is fixed to the rear end of the extrusion rod (1003); an oil cylinder (1005) is fixed to the rear side of the support box (1001), and the fifth piston block (1004) is slidably connected in the oil cylinder (1005); a connecting pipe (1006) is fixed to the rear side of the oil cylinder (1005), and the connecting pipe (1006) passes through the mounting plate (4) and the damping rod (501) and is connected to the first oil groove (509).

8. The double-buffered train floating floor shock absorber according to claim 7 is characterized in that: The second compression springs (1007) are symmetrically fixed on the two inner walls of the support box (1001), and the inner end of the second compression spring (1007) is fixed with a movable block (1008), the movable block (1008) is wedge-shaped and connected to the extrusion rod (1003), and the outer side of the movable block (1008) is connected to the heat conduction plate (1010) through a connecting frame (1009), and the heat conduction plate (1010) is slidably connected to the outer side of the liquid storage tank (9), and the heat conduction plate (1010) is connected to the outer side of the liquid storage tank (9). The heat conducting plate (1010) is evenly distributed on the liquid storage tank (9) in the circumferential direction; a heat conducting sheet (1012) is fixed to the outer end surface of the heat conducting plate (1010); the heat conducting sheets (1012) are evenly distributed on the heat conducting plate (1010); arc-shaped channels (1013) are opened on the heat conducting sheet (1012); the arc-shaped channels (1013) are evenly distributed on the heat conducting sheet (1012); and the bending directions of the arc-shaped channels (1013) on two adjacent heat conducting sheets (1012) are opposite.

9. The double-buffered train floating floor shock absorber according to claim 8, characterized in that: A slideway (1011) is provided at the bottom of the liquid storage box (9), and the connecting frame (1009) passes through the slideway (1011).

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