Dual-purpose vehicle guiding and buffering mechanism, chassis thereof and dual-purpose vehicle

Abstract

This invention relates to a guide and buffer mechanism for a dual-purpose road-rail vehicle, its chassis, and the dual-purpose road-rail vehicle itself, belonging to the field of dual-purpose road-rail vehicles. The technical solution adopted by this invention includes: a guide wheel assembly comprising at least one pair of guide wheels, with an axle between the guide wheels; a lifting wheel seat, a slewing mechanism, a lifting frame, and a lifting cylinder mechanism; the lifting frame includes a lifting plate and a lifting swing arm, with the lower part of the lifting swing arm connected to the lifting plate and the upper part of the lifting swing arm connected to the dual-purpose road-rail vehicle; the piston end of the lifting cylinder mechanism is hinged to the lifting swing arm, and the cylinder body of the lifting cylinder mechanism is hinged to the dual-purpose road-rail vehicle. The invention provides a dual-purpose road-rail vehicle chassis equipped with the guide and buffer mechanism. The guide and buffer mechanism is located at the lower part of the chassis, and the lifting mechanism frame and adjustment structure frame are mounted on the chassis. The road lock mechanism is located on the side of the chassis. When the two pairs of guide wheels are raised, the height of the front guide wheel is lower than the height of the rear guide wheel.

Description

Technical Field

[0001] This invention relates to a guide and buffer mechanism for a dual-purpose road-rail vehicle, its chassis, and the dual-purpose road-rail vehicle itself, belonging to the field of dual-purpose road-rail vehicles. Background Technology

[0002] The current dual-purpose road-rail vehicle has two operating modes: road and rail. Its feature is that it is convenient to move to another location when traveling on the road, and it is used for traction of rail vehicles or train carriages when traveling on the rail. It is suitable for use in railway freight yards, subway cars, and high-speed train carriages.

[0003] The dual-purpose road-rail vehicle switches between highways and rail facilities via extended guide wheels. When on the rails, the extended guide wheels are in contact with the rails, and when traveling on the highway, they are off the rails to avoid damage caused by grounding.

[0004] Traditional guide wheel structures consist of a pair of guide wheels per group, whose function is only for guidance and lacks significant load-bearing capacity. At track bends, due to the structural limitations of dual-purpose road-rail vehicles, the guide wheels cannot adapt to changes in curves, posing a risk of derailment. Furthermore, hydraulically lifted guide wheel mechanisms pose a risk of hydraulic failure and grounding when traveling on highways. Summary of the Invention

[0005] This invention provides a guide buffer mechanism for a dual-purpose road-rail vehicle, its chassis, and the dual-purpose road-rail vehicle, solving the problems of low load-bearing capacity of the guide wheels, steering buffering during track turns, and guide wheel locking in highway mode.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0007] A guide buffer mechanism for a road-rail dual-purpose vehicle, its chassis, and the road-rail dual-purpose vehicle, including a guide wheel set, wherein the guide wheel set includes at least one pair of guide wheels, and the guide wheels are connected by an axle. It also includes a lifting wheel seat, a slewing mechanism, a lifting frame, and a lifting cylinder mechanism.

[0008] The lifting frame includes a lifting plate and a lifting swing arm. The lower part of the lifting swing arm is connected to the lifting plate, and the upper part of the lifting swing arm is connected to the dual-purpose road and rail vehicle.

[0009] The piston end of the lifting cylinder mechanism is hinged to the lifting swing arm, and the cylinder body of the lifting cylinder mechanism is hinged to the dual-purpose road and rail vehicle.

[0010] The rotary mechanism includes a fixed part and a rotating part, which are respectively fixedly mounted on the lifting plate and the lifting wheel seat or on the lifting wheel seat and the lifting plate;

[0011] The axle is mounted on the lifting wheel seat.

[0012] According to the aforementioned guide buffer mechanism for a dual-purpose road-rail vehicle, its chassis, and the dual-purpose road-rail vehicle, a rotation buffer is provided between the lifting plate and the lifting wheel seat. The rotation buffer includes a buffer plate, two buffer springs, a buffer guide, and a guide fixing seat. The two buffer springs are respectively disposed on both sides of the buffer plate, and the buffer springs are sleeved on the buffer guide. The buffer springs are fixed to the buffer plate and the buffer guide. The buffer guide and the buffer plate maintain a distance as the buffer distance. The buffer guide is set on the guide fixing seat with a rotating ring tangent to the rotating structure. The guide fixing seat and the buffer plate are respectively fixed to the lifting plate and the lifting wheel seat or the lifting wheel seat and the lifting plate.

[0013] According to the aforementioned guide buffer mechanism for a dual-purpose road-rail vehicle, its chassis, and the dual-purpose road-rail vehicle, there are two pairs of guide wheels. The axles of the two pairs of guide wheels are arranged parallel to each other at the front and rear of the lifting wheel seat. The axles are arranged perpendicular to the forward direction of the dual-purpose road-rail vehicle, and the height of the front guide wheel is lower than that of the rear guide wheel.

[0014] According to the aforementioned guide buffer mechanism for a dual-purpose road-rail vehicle, its chassis, and the dual-purpose road-rail vehicle, a position adjustment hydraulic cylinder is also included. The cylinder body of the position adjustment hydraulic cylinder is mounted on the lifting arm or the dual-purpose road-rail traction vehicle. The front end of the piston rod of the position adjustment hydraulic cylinder is connected to the lifting plate. The connection position of the position adjustment hydraulic cylinder on the lifting plate is offset from the connection position of the lifting arm along the forward direction of the dual-purpose road-rail vehicle.

[0015] According to the aforementioned guide buffer mechanism for a dual-purpose road-rail vehicle, its chassis, and the dual-purpose road-rail vehicle, a road lock mechanism is also included. The road lock mechanism includes a lifting lock hole plate, a locking cylinder, and a fixed lock hole plate, all mounted on a lifting plate or lifting wheel seat. The top of the lifting lock hole plate is provided with a lock hole. The cylinder body of the locking cylinder is fixed to the dual-purpose road-rail vehicle. The fixed lock hole plate is provided with a fixed lock hole and is fixed to the dual-purpose road-rail vehicle. The fixed lock hole is coaxial with the extension rod of the locking cylinder. When the lifting lock hole plate is raised to its highest position, the lock hole and the fixed lock hole are coaxial.

[0016] According to the aforementioned guide buffer mechanism for a dual-purpose road-rail vehicle, its chassis, and the dual-purpose road-rail vehicle, the road lock mechanism further includes a road lock fixing plate, which is fixed on both sides of the dual-purpose road-rail vehicle body, and the locking cylinder and the fixing lock hole plate are fixed on the road lock fixing plate.

[0017] According to the aforementioned guide buffer mechanism for a dual-purpose road-rail vehicle, its chassis, and the dual-purpose road-rail vehicle, the system further includes a lifting mechanism frame and an adjustment structure frame. The lifting structure frame is located above and behind the guide wheel, and the adjustment structure frame is located above and in front of the guide wheel. The cylinder of the lifting arm is hinged to the lifting mechanism frame, the cylinder of the position adjustment hydraulic system is hinged to the adjustment structure frame, and the top of the lifting arm is hinged to the adjustment structure frame. The lifting mechanism frame and the adjustment structure frame are mounted on the body of the dual-purpose road-rail vehicle.

[0018] According to the aforementioned guide buffer mechanism for a dual-purpose road-rail vehicle, its chassis, and the dual-purpose road-rail vehicle, the lifting swing arms are arranged in pairs, with two swing arm connecting plates connecting the two swing arms. Between the two swing arm connecting plates is a lifting hinge hole plate, with a hinge shaft hole on the lifting hinge hole plate. A hinge shaft is located inside the hinge hole, and a rotating seat is provided between the hinge shafts in the two lifting hinge hole plates. The rotating seat has an opening in the middle, and the front end of the piston rod of the lifting cylinder mechanism is inserted into the opening of the rotating seat. A shock-absorbing spring is also sleeved on the piston rod, with the lower part of the shock-absorbing spring connected to the rotating seat. A shock-absorbing limit is provided on the piston rod above the shock-absorbing spring.

[0019] The present invention provides a chassis with a road-rail dual-purpose vehicle guide and buffer mechanism. The road-rail dual-purpose vehicle guide and buffer mechanism is set at the lower part of the chassis. The lifting mechanism frame and the adjustment structure frame are set on the chassis. The road lock mechanism is set on the side of the chassis. When the two pairs of guide wheels are raised, the height of the front guide wheel is lower than the height of the rear guide wheel.

[0020] The present invention includes a guide buffer mechanism chassis for a dual-purpose road-rail vehicle and a dual-purpose road-rail vehicle chassis. The vehicle is also equipped with a hydraulic power mechanism, which provides hydraulic power for the position adjustment hydraulic and lifting cylinder mechanisms. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the invention of the guide and buffer mechanism for dual-purpose road and rail vehicles.

[0022] Figure 2 This is a side view of the overall structure of the invention of the guide and buffer mechanism for dual-purpose road and rail vehicles.

[0023] Figure 3 This is a top view of the overall structure of the invention of the guide and buffer mechanism for dual-purpose road and rail vehicles.

[0024] Figure 4 This is a bottom view of the overall structure of the invention of the guide and buffer mechanism for dual-purpose road and rail vehicles.

[0025] Figure 5 This is a cross-sectional view of the location of the buffer spring in the invention of the guide buffer mechanism for dual-purpose road and rail vehicles.

[0026] Figure 6 This is a structural diagram of the guide buffer mechanism of a dual-purpose road-rail vehicle installed on the chassis.

[0027] Figure label:

[0028] 1. Guide wheel; 11. Axle; 12. Front guide wheel; 13. Rear guide wheel; 2. Lifting wheel seat; 21. Wheel seat reinforcing plate; 3. Lifting frame; 31. Lifting plate; 32. Lifting swing arm; 33. Swing arm connecting plate; 34. Lifting hinge hole plate; 35. Rotating seat; 4. Lifting cylinder mechanism; 41. Lifting mechanism frame; 42. Shock-absorbing spring; 43. Shock-absorbing limit; 5. Rotation mechanism; 51. Fixed part; 52. Rotating part; 6. Rotation buffer; 61. Buffer plate; 62. Buffer spring; 63. Buffer guide; 64. Guide fixed seat; 7. Position adjustment hydraulic cylinder; 71. Adjustment structure frame; 8. Highway lock mechanism; 81. Lifting lock hole plate; 82. Locking cylinder; 83. Fixed lock hole plate; 84. Highway lock fixed plate; 9. Chassis. Detailed Implementation

[0029] The specific structure of the present invention will be further described below:

[0030] This invention relates to a guide and buffer mechanism for a combined road and rail vehicle, its chassis, and the combined road and rail vehicle, used for guiding the combined road and rail vehicle forward by contacting the track during track travel mode.

[0031] Specifically, the guide buffer mechanism for dual-purpose road and rail vehicles in this embodiment of the invention is as follows: Figure 1-6 As shown, it includes a guide wheel assembly, a lifting wheel seat 2, a slewing mechanism 5, a lifting frame 3, and a lifting cylinder mechanism 4.

[0032] The guide wheel assembly includes two pairs of guide wheels, with a wheel axle 11 between the guide wheels.

[0033] The lifting frame 3 is used to connect the guide wheel to the dual-purpose road-rail vehicle. The lifting frame 3 includes a lifting plate 31 and a lifting swing arm 32. The lower part of the lifting swing arm 32 is connected to the lifting plate 31, and the upper part of the lifting swing arm 32 is connected to the dual-purpose road-rail vehicle. The piston end of the lifting cylinder mechanism 4 is hinged to the lifting swing arm 32, and the cylinder body of the lifting cylinder mechanism 4 is hinged to the dual-purpose road-rail vehicle. The rotating mechanism 5 includes a fixed part 51 and a rotating part 52. The fixed part 51 and the rotating part 52 are respectively fixedly installed on the lifting plate 31 and the lifting wheel seat 2 or on the lifting wheel seat 2 and the lifting plate 31. The wheel axle 11 is installed on the lifting wheel seat 2.

[0034] To achieve cushioning during turning and return to center after turning, a rotating buffer 6 is provided between the lifting plate 31 and the lifting wheel seat 2. The rotating buffer 6 is located on the periphery of the rotating structure and consists of two sets. Specifically, the rotating buffer 6 includes a buffer plate 61, two buffer springs 62, a buffer guide 63, and a guide fixing seat 64. The buffer plate 61 is a relatively thick vertical plate extending downward from the outer periphery of the lifting plate 31.

[0035] Two buffer springs 62 are respectively disposed on both sides of the buffer plate 61. The buffer springs 62 are sleeved on the buffer guide 63, with one end of the buffer spring 62 contacting the buffer plate 61 and the other end fixed to the buffer guide 63. The buffer guide 63 maintains a distance from the buffer plate 61 as the buffer distance. The buffer guide 63 is perpendicularly fixed to the guide fixing seat 64. The guide fixing seat 64 has an L-shaped cross-section, with one part fixed to the lifting wheel seat 2 and the other part fixed to the buffer guide. The buffer guide is tangent to the rotating ring of the rotary structure.

[0036] The buffer plate 61 can also be interchanged with the guide fixing seat 64. That is, the buffer plate 61 extends from the lifting wheel seat 2, and the guide fixing seat 64 is fixed on the lifting plate. The positions of the two can be interchanged.

[0037] The slewing mechanism allows the guide wheel to rotate along the curved track when the track is in a curved position. The rotation buffer can limit the rotation to a certain range, avoiding the risk of derailment due to excessive rotation and failure to return to the correct position in time.

[0038] There are two pairs of guide wheels, with their axles 11 arranged parallel to each other at the front and rear of the lifting wheel seat 2. The axles 11 are perpendicular to the forward direction of the dual-purpose road-rail vehicle, and the height of the front guide wheel 12 is lower than that of the rear guide wheel 13. The two sets of guide wheels have relatively strong load-bearing capacity and can withstand large loads. The double guide wheels, in conjunction with the slewing mechanism, reduce the risk of derailment.

[0039] In order to control the different lifting times of the dual guide wheels and keep the lifting plate tilted to improve the departure angle of the whole vehicle, a position adjustment hydraulic cylinder 7 is also provided. The cylinder body of the position adjustment hydraulic cylinder is set on the lifting arm 32 or the road-rail dual-purpose tractor. The front end of the piston rod of the position adjustment hydraulic cylinder is connected to the lifting plate 31. The connection position of the position adjustment hydraulic cylinder on the lifting plate 31 and the connection position of the lifting arm 32 are offset along the forward direction of the road-rail dual-purpose vehicle.

[0040] In highway mode, the hydraulic position adjustment retracts the extension rod; in railway mode, the hydraulic position adjustment extends the extension rod, keeping the lifting wheel seat basically horizontal with the track to achieve the guiding function.

[0041] The highway locking mechanism 8 can lock and fix the raised guide wheel. Specifically, the highway locking mechanism 8 includes a lifting lock hole plate 81, a locking cylinder 82, and a fixing lock hole plate 83, which are set on the lifting plate 31 or the lifting wheel seat 2. The top of the lifting lock hole plate 81 is provided with a lock hole. The highway lock fixing plate is fixed on both sides of the road-rail dual-purpose vehicle body. The locking cylinder 82 and the fixing lock hole plate 83 are fixed on the highway lock fixing plate. The fixing lock hole plate 83 has a fixing lock hole. The fixing lock hole is coaxial with the extension rod of the locking cylinder 82. When the lifting lock hole plate 81 is raised to the highest position, the lock hole and the fixing lock hole are coaxial.

[0042] The piston rod of the locking cylinder 82 extends and inserts into the locking hole of the lifting locking plate 81, and then into the fixing locking hole of the fixing locking plate 83, thereby fixing the lifting locking plate 81 and its connected lifting wheel seat and guide wheel.

[0043] In highway mode, the locking cylinder extends, and the extension rod of the locking cylinder locks the lifting locking plate 81 of the lifting plate or lifting wheel seat, thus disabling the lifting mechanism; in railway mode, the locking cylinder retracts, allowing the lifting locking plate 81 to rise and fall.

[0044] In order to connect with the vehicle body, each component in this invention is further designed with a lifting mechanism frame 41 and an adjustment structure frame 71. The lifting structure frame is located above and behind the guide wheel, and the adjustment structure frame 71 is located above and in front of the guide wheel.

[0045] In this invention, lifting arms 32 are arranged in pairs, with two arm connecting plates 33 connecting the two lifting arms 32. Between the two arm connecting plates 33 is a lifting hinge plate 34, with a hinge shaft hole on the lifting hinge plate 34. A hinge shaft is located inside the hinge hole, and a rotating seat 35 is provided between the hinge shafts in the two lifting hinge plate 34. The rotating seat 35 has an opening in the middle, and the front end of the piston rod of the lifting cylinder mechanism 4 is inserted into the opening of the rotating seat 35. A shock-absorbing spring 42 is also fitted on the piston rod, with the lower part of the shock-absorbing spring 42 connected to the rotating seat 35. A shock-absorbing limit 43 is provided on the upper part of the piston rod of the shock-absorbing spring 42. The cylinder body of the lifting cylinder mechanism is hinged to the lifting mechanism frame 41, and the cylinder body of the position adjustment hydraulic system is hinged to the adjustment structure frame 71. The top of the lifting arm 32 is hinged to the adjustment structure frame 71. The lifting mechanism frame 41 and the adjustment structure frame 71 are installed on the body of the dual-purpose road-rail vehicle.

[0046] The lifting mechanism frame 41 is provided with ear plates for the cylinder body hinge connection of the lifting cylinder mechanism. The adjustment structure frame 71 is provided with two pairs of ear plate structures for the connection of the two lifting swing arms 32. The two lifting swing arms 32 are symmetrically arranged in the dual-purpose road and rail or chassis structure to provide lifting torque evenly.

[0047] The present invention includes a dual-purpose road-rail vehicle chassis 9 equipped with a road-rail vehicle guide and buffer mechanism. The road-rail vehicle guide and buffer mechanism is set at the lower part of the chassis 9. The chassis is a Class II vehicle modified chassis. There are two sets of modified beams in the chassis. The lifting mechanism frame 41 and the adjustment structure frame 71 are set on the two sets of beams. The road lock mechanism 8 is set on the side of the two main beams of the chassis 9. When the two pairs of guide wheels are raised, the height of the front guide wheel is lower than the height of the rear guide wheel.

[0048] A road-rail dual-purpose vehicle equipped with a guide structure and a chassis 9, wherein the chassis 9 is the chassis 9 described in claim 9, and a hydraulic power mechanism is also provided inside the vehicle, which provides hydraulic power to the position adjustment hydraulic and lifting cylinder mechanism 4.

[0049] The working process of this invention:

[0050] In highway mode, the lifting cylinder mechanism is hinged to the rotating seat and the swing arm connecting plate, which drives the entire lifting swing arm to rise; the position adjustment hydraulic cylinder retracts to adjust the state of the lifting wheel seat, the locking cylinder of the highway lock mechanism extends, and the extension rod of the locking cylinder fixes the lifting plate or the lifting lock hole plate of the lifting wheel seat, thus disabling the up and down lifting mechanism.

[0051] In railway mode, the locking cylinder of the road lock mechanism retracts, as does its extension rod, allowing the lifting lock plate to rise and fall. The lifting cylinder mechanism is hinged to the rotating seat and the swing arm connecting plate, driving the entire lifting swing arm to fall. The extension rod of the position adjustment hydraulic cylinder extends, keeping the lifting wheel seat basically horizontal with the track, thus achieving the guiding function. When passing through curves, the swing of the slewing mechanism is limited by the buffer spring and the allowance between the buffer guide and the buffer guide, improving curve passability and thus ensuring the guiding effect.

[0052] The present invention provides a dual-purpose road-rail vehicle chassis equipped with a road-rail vehicle guide and buffer mechanism. The road-rail vehicle guide and buffer mechanism is set at the lower part of the chassis. The lifting mechanism frame and the adjustment structure frame are set on the chassis. The road lock mechanism is set on the side of the chassis. When the two pairs of guide wheels are raised, the height of the front guide wheel is lower than the height of the rear guide wheel.

[0053] The present invention provides a dual-purpose road-rail vehicle with a guide buffer mechanism chassis, the chassis being the chassis described in claim 9, and a hydraulic power mechanism inside the vehicle, which provides hydraulic power for the position adjustment hydraulic and lifting cylinder mechanisms.

Claims

1. A road-rail dual-purpose vehicle chassis with a guide buffer mechanism, comprising a guide wheel assembly, wherein the guide wheel assembly comprises at least one pair of guide wheels, and an axle (11) is located between the guide wheels, characterized in that, It also includes lifting wheel seat (2), slewing mechanism (5), lifting frame (3), and lifting cylinder mechanism (4); The lifting frame (3) includes a lifting plate (31) and a lifting arm (32). The lower part of the lifting arm (32) is connected to the lifting plate (31), and the upper part of the lifting arm (32) is connected to the dual-purpose road and rail vehicle. The piston end of the lifting cylinder mechanism (4) is hinged to the lifting arm (32), and the cylinder body of the lifting cylinder mechanism (4) is hinged to the dual-purpose road and rail vehicle. The slewing mechanism (5) includes a fixed part (51) and a rotating part (52). The fixed part (51) and the rotating part (52) are respectively fixed on the lifting plate (31) and the lifting wheel seat (2) or on the lifting wheel seat (2) and the lifting plate (31). The axle (11) is set on the lifting wheel seat (2). A rotating buffer (6) is provided between the lifting plate (31) and the lifting wheel seat (2). The rotating buffer (6) includes a buffer plate (61), two buffer springs (62), a buffer guide (63), and a guide fixing seat (64). The two buffer springs (62) are respectively located on both sides of the buffer plate (61). The buffer springs (62) are sleeved on the buffer guide (63). The buffer springs (62) are fixed on the buffer plate (61) and the buffer guide (63). The buffer guide (63) and the buffer plate (61) maintain a distance as the buffer distance. The buffer guide (63) is set on the guide fixing seat (64) with a rotating ring tangent to the rotating structure. The guide fixing seat (64) and the buffer plate (61) are respectively fixed on the lifting plate (31) and the lifting wheel seat (2) or on the lifting wheel seat (2) and the lifting plate (31). The guide wheels are in two pairs. The axles (11) of the two pairs of guide wheels are arranged in parallel at the front and rear of the lifting wheel seat (2). The axles (11) are arranged perpendicular to the forward direction of the dual-purpose road and rail vehicle. The height of the front guide wheel (12) is lower than the height of the rear guide wheel (13). It also includes a position adjustment hydraulic cylinder (7), the cylinder body of which is set on the lifting arm (32) or the dual-purpose road and rail tractor, the piston rod of which is connected to the lifting plate (31), and the position of the position adjustment hydraulic cylinder on the lifting plate (31) is offset from the position of the lifting arm (32) along the forward direction of the dual-purpose road and rail tractor. It also includes a highway lock mechanism (8), which includes a lifting lock hole plate (81), a locking cylinder (82) and a fixed lock hole plate (83) set on the lifting plate (31) or the lifting wheel seat (2). The top of the lifting lock hole plate (81) is provided with a lock hole. The cylinder body of the locking cylinder (82) is fixed on the dual-purpose road and rail vehicle. The fixed lock hole plate (83) is provided with a fixed lock hole. The fixed lock hole plate (83) is fixed on the dual-purpose road and rail vehicle. The fixed lock hole is coaxial with the extension rod of the locking cylinder (82). When the lifting lock hole plate (81) is raised to the highest position, the lock hole is coaxial with the fixed lock hole. The highway lock mechanism (8) also includes a highway lock fixing plate, which is fixed on both sides of the dual-purpose road and rail vehicle body. The locking cylinder (82) and the fixing lock hole plate (83) are fixed on the highway lock fixing plate. It also includes a lifting mechanism frame (41) and an adjustment structure frame (71). The lifting mechanism frame is located above and behind the guide wheel, and the adjustment structure frame (71) is located above and in front of the guide wheel. The cylinder of the lifting arm (32) is hinged to the lifting mechanism frame (41), the cylinder of the position adjustment hydraulic system is hinged to the adjustment structure frame (71), and the top of the lifting arm (32) is hinged to the adjustment structure frame (71). The lifting mechanism frame (41) and the adjustment structure frame (71) are installed on the body of the dual-purpose road and rail vehicle. The lifting arms (32) are arranged in pairs, and two lifting arm connecting plates (33) are connected between the two lifting arms (32). Between the two lifting arm connecting plates (33) is a lifting hinge hole plate (34). The lifting hinge hole plate (34) has a hinge shaft hole, and the hinge shaft is inside the hinge hole. A rotating seat (35) is provided between the hinge shafts in the two lifting hinge hole plates (34). The rotating seat (35) has an opening in the middle. The front end of the piston rod of the lifting cylinder mechanism (4) is inserted into the opening of the rotating seat (35). A shock-absorbing spring (42) is also sleeved on the piston rod. The lower part of the shock-absorbing spring (42) is connected to the rotating seat (35). The piston rod above the shock-absorbing spring (42) is provided with a shock-absorbing limit (43).

2. A dual-purpose road-rail vehicle with a chassis having a guiding and buffering mechanism as described in claim 1, characterized in that, The road-rail dual-purpose vehicle guide buffer mechanism is set at the lower part of the chassis (9). The lifting mechanism frame (41) and the adjustment structure frame (71) are set on the chassis (9). The road lock mechanism (8) is set on the side of the chassis (9). When the two pairs of guide wheels are raised, the height of the front guide wheel is lower than the height of the rear guide wheel. A hydraulic power mechanism is also provided in the vehicle. The hydraulic power mechanism provides hydraulic power for the position adjustment hydraulic and lifting cylinder mechanism (4).

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