CN114932772A - Guide buffer mechanism of rail-road vehicle, chassis of rail-road vehicle and rail-road vehicle - Google Patents

Abstract

The invention relates to a guide buffer mechanism of a rail-road vehicle, a chassis of the rail-road vehicle and the rail-road vehicle, belonging to the field of rail-road vehicles, and adopting the technical scheme that: the wire guiding device comprises a guiding wheel set, a lifting wheel seat, a swing mechanism, a lifting frame and a lifting oil cylinder mechanism, wherein the guiding wheel set comprises at least one pair of guiding wheels, and a wheel shaft is arranged between the guiding wheels; the lifting frame comprises a lifting plate and a lifting swing arm, the lower part of the lifting swing arm is connected with the lifting plate, and the upper part of the lifting swing arm is connected with the combined car; the piston end of the lifting oil cylinder mechanism is hinged to the lifting swing arm, and the cylinder body of the lifting oil cylinder mechanism is hinged to the combined car. The chassis is provided with the guide and buffer mechanism of the convertible highway vehicle, the guide and buffer mechanism of the convertible highway vehicle is arranged at the lower part of the chassis, the chassis is provided with the lifting machine framework and the adjusting structure frame, the highway lock mechanism is arranged on the side surface of the chassis, and the height of the front guide wheel is lower than that of the rear guide wheel when the two pairs of guide wheels are lifted.

Description

Road-railway vehicle guide buffer mechanism and its chassis and road-railway vehicle

technical field

The invention relates to a road-rail dual-use vehicle guiding buffer mechanism and its chassis and a road-rail dual-use vehicle, belonging to the field of road-rail dual-use vehicles.

Background technique

The current road-rail dual-purpose vehicle structure has two driving modes: road and railway, which are characterized by the convenience of moving on the road, and the driving on the railway is used for the traction of rail vehicles or train cars, and is suitable for railway freight yards, subway cars, high-speed trains Car transfer use.

The conversion of the road-rail vehicle between the road and the track facility is realized by the downwardly extending guide wheel. When on the track, the downwardly extending guide wheel is in contact with the track, and when running on the road, it is off the track to avoid damage caused by the grounding of the guide wheel.

In the traditional guide wheel structure, each group of structures is a pair of wire wheels, and its function is only suitable for guiding and does not have a large bearing capacity. At the turning position of the track, due to the problem of the body structure of the road-rail dual-purpose vehicle, the guide wheel cannot adapt to the change of the curve at the position of the curve, and there is a risk of derailment. There is also the danger of grounding due to hydraulic failure when driving on the road through the hydraulically lifted guide wheel mechanism.

SUMMARY OF THE INVENTION

The invention provides a road-railway vehicle guide buffer mechanism and its chassis and road-railway vehicle, which can solve the problem of low bearing capacity of guide wheels of road-railway vehicles, steering buffering in track turning and guide wheel locking in road mode question.

For achieving the above object, the technical scheme adopted in the present invention is:

A guide buffer mechanism for a road-rail vehicle and its chassis and a road-rail vehicle, including a guide wheel group, the guide wheel group including at least a pair of guide wheels, the wheel axle between the wire wheels, and the lifting wheel seat, Slewing mechanism, lifting frame, lifting cylinder mechanism;

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 road and rail vehicle;

The piston end of the lifting cylinder mechanism is hingedly connected to the lifting swing arm, and the cylinder body of the lifting cylinder mechanism is hinged to the road-rail dual-purpose vehicle;

The slewing mechanism includes a fixed part and a rotating part, and the fixed part and the rotating part are respectively fixed on the lifting plate and the lifting wheel base or on the lifting wheel base and the lifting plate;

The wheel axle is arranged on the lifting wheel seat.

According to the road-railway vehicle guide buffer mechanism and its chassis and the road-railway vehicle, a rotation buffer is provided between the lift plate and the lift wheel base, and the rotation buffer comprises a buffer plate, two buffer springs, a buffer guide and a Guide fixed seat, two buffer springs are located on both sides of the buffer plate, the buffer spring is sleeved on the buffer guide, the buffer spring is fixed on the buffer plate and the buffer guide, the buffer guide and the buffer plate keep a distance as the buffer distance, and the buffer guide is cut to the rotation The rotating ring of the structure is arranged on the guide fixed seat, and the guide fixed seat and the buffer plate are respectively fixed on the lifting plate and the lifting wheel seat or the lifting wheel seat and the lifting plate.

According to the guide buffer mechanism for a road-rail vehicle and its chassis and the road-rail vehicle, the guide wheels are in two pairs, and the axles of the two pairs of guide wheels are arranged in parallel at the front and the rear of the lifting wheel base. , the wheel axle is set perpendicular to the forward direction of the road and rail vehicle, and the height of the front guide wheel is lower than the height of the rear guide wheel.

According to the road-rail dual-purpose vehicle guiding buffer mechanism and its chassis and the road-rail dual-purpose vehicle, it further comprises a position adjusting hydraulic cylinder, and the position adjusting hydraulic cylinder is arranged on the lifting swing arm or the road-rail dual-purpose tractor. The front end of the piston rod of the position adjustment hydraulic pressure is connected to the lift plate, and the connection position of the position adjustment hydraulic pressure on the lift plate and the connection position of the lift swing arm are dislocated along the advancing direction of the road-rail vehicle.

According to the road-rail dual-purpose vehicle guiding buffer mechanism and its chassis and the road-rail dual-purpose vehicle, it also includes a road lock mechanism, and the road lock mechanism includes a lifting lock hole plate, a lock, and The oil-stopping cylinder and the fixed keyhole plate, the top of the lifting keyhole plate is provided with a keyhole, the cylinder block of the locking oil cylinder is fixed on the public-rail dual-purpose vehicle, the fixed keyhole plate is provided with a fixed keyhole, and the fixed keyhole plate is fixed For both public and rail vehicles, the fixed lock hole is coaxial with the extension rod of the locking oil cylinder, and the lock hole is coaxial with the fixed lock hole when the lifting lock hole plate is raised to the highest position.

According to the road-rail dual-purpose vehicle guiding buffer mechanism and its chassis and the road-rail dual-purpose vehicle, the road lock mechanism further comprises a road lock fixing plate, and the road lock fixing plate is fixed on the road and rail vehicle. The locking oil cylinder and the fixed keyhole plate are fixed on the road lock fixing plate.

According to the guide buffer mechanism for a road-railway vehicle and its chassis and the road-railway vehicle, it further includes a lift frame and an adjustment structure frame, the lift structure frame is arranged at the rear and upper part of the guide wheel, and the The adjustment structure frame is arranged in front of the guide wheel, the cylinder of the lifting swing arm is hinged on the lift frame, the position adjustment hydraulic cylinder is hingedly connected to the adjustment structure frame, and the top of the lift swing arm is hingedly connected to the adjustment structure frame The lift frame and the adjustment structure frame are arranged on the body of the road-rail dual-use vehicle.

According to the guiding buffer mechanism for a road-railway vehicle and its chassis and the road-railway vehicle, the lifting and swinging arms are arranged in pairs, and two swinging arm connecting plates are connected between the two lifting and swinging arms, and the two swinging arms are connected with each other. Between the arm connecting plates is a lifting hinged orifice plate, a hinged shaft hole is opened on the lifting hinged orifice plate, and the hinged hole is a hinged shaft. The front end of the piston rod of the lifting oil cylinder mechanism is inserted into the opening of the rotating seat, the piston rod is also covered with a shock-absorbing spring, the lower part of the shock-absorbing spring is connected to the rotating seat, and the upper piston rod of the shock-absorbing spring is provided with a shock-absorbing limit.

The invention is provided with a chassis of a road-rail dual-purpose vehicle guiding buffer mechanism, the road-rail dual-purpose vehicle guiding buffer mechanism is arranged at the lower part of the chassis, the lifting mechanism frame and the adjusting structure frame are arranged on the chassis, and the side of the chassis is provided with In the highway lock mechanism, the height of the front guide wheel is lower than the height of the rear guide wheel when the two pairs of guide wheels are raised.

The invention is provided with a road-rail dual-purpose vehicle guide buffer mechanism chassis and a road-rail dual-purpose vehicle chassis, and a hydraulic power mechanism is also arranged in the vehicle, and the hydraulic power mechanism provides hydraulic power for the position adjustment hydraulic pressure and the lifting cylinder mechanism.

Description of drawings

Figure 1 is a perspective view of the overall structure of the invention of the road-rail dual-purpose vehicle guide buffer mechanism,

Figure 2 is a side view of the overall structure of the invention of the road-rail dual-purpose vehicle guide buffer mechanism,

Figure 3 is a top view of the overall structure of the invention of the road-rail dual-purpose vehicle guide buffer mechanism,

Figure 4 is a bottom view of the overall structure of the invention of the road-rail dual-purpose vehicle guide buffer mechanism,

Figure 5 is a sectional view of the position of the buffer spring of the invention of the road-rail dual-purpose vehicle guide buffer mechanism,

Figure 6 is a structural diagram of the road-rail dual-purpose vehicle guide buffer mechanism installed on the chassis,

Reference number:

1. Guide wheel, 11, Wheel 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 hinged orifice plate, 35, Rotary seat, 4. Lifting cylinder mechanism, 41. Lifting mechanism frame, 42. Damping spring, 43. Damping limit, 5. Rotary mechanism, 51, Fixed part, 52, rotating part, 6, rotating buffer, 61, buffer plate, 62, buffer spring, 63, buffer guide, 64, guide fixing seat, 7, position adjustment hydraulic cylinder, 71, adjustment structure frame, 8, road Locking mechanism, 81. Lifting keyhole plate, 82. Locking cylinder, 83. Fixed keyhole plate, 84. Road lock fixing plate, 9. Chassis.

Detailed ways

The concrete structure of the present invention is further described below:

The invention relates to a road-rail dual-purpose vehicle guiding buffer mechanism and its chassis and the road-rail dual-purpose vehicle, which are used for the road-rail combined vehicle to be guided and moved forward by contacting the rain track in the track running mode.

Specifically, as shown in FIGS. 1-6 , the guide buffer mechanism of the road and rail vehicle according to the embodiment of the present invention includes a guide wheel set, a lifting wheel base 2 , a slewing mechanism 5 , a lifting frame 3 and a lifting cylinder mechanism 4 .

Among them, the guide wheel set includes two pairs of guide wheels, and the wheel shaft 11 is between the wire wheels.

Among them, the lifting frame 3 is used to connect the guide wheel with the road-rail dual-purpose 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 road and rail vehicle; the piston end of the lifting cylinder mechanism 4 is hingedly connected to the lifting plate 31. The swing arm 32, the cylinder body of the lifting cylinder mechanism 4 is hinged to the road and rail vehicle; the slewing mechanism 5 includes a fixed part 51 and a rotating part 52, and the fixed part 51 and the rotating part 52 are respectively fixed on the lifting plate 31 and the lifting wheel base 2. or on the lifting wheel base 2 and the lifting plate 31 ; the axle 11 is arranged on the lifting wheel base 2 .

In order to realize buffering during turning and returning after turning, a rotating buffer 6 is provided between the lifting plate 31 and the lifting wheel base 2 , and the rotating buffer 6 is located at the periphery of the rotating structure, and there are two groups. Specifically, the rotation buffer 6 includes a buffer plate 61 , two buffer springs 62 , a buffer guide 63 and a guide fixing seat 64 .

Two buffer springs 62 are respectively arranged on both sides of the buffer plate 61 , the buffer spring 62 is sleeved on the buffer guide 63 , one end of the buffer spring 62 contacts the buffer plate 61 , and the other end is 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 vertically predetermined on the guide fixed seat 64. The cross section of the guide fixed seat 64 is L-shaped. The buffer guide is cut to the rotating ring of the rotary structure.

The buffer plate 61 can also be exchanged with the fixed position of the guide fixing base 64 , that is, the buffer plate 61 extends from the lift wheel base 2 , and the guide fixing base 64 is fixed on the lift plate, and the positions of the two can be interchanged.

The slewing mechanism can rotate the guide wheel with the curved track at the position of the curved track, and the rotation buffer can limit the rotation to a certain range, avoiding the risk of derailment that cannot be returned in time due to excessive rotation.

There are two pairs of guide wheels. The axles 11 of the two pairs of guide wheels are arranged in parallel at the front and rear of the lift wheel base 2. The axles 11 are arranged perpendicular to the forward direction of the road and rail vehicle. The height of the front guide wheel 12 is lower than that of the rear guide wheel. Wheel 13 height. The bearing capacity of the two sets of guide wheels is relatively strong and can carry a large load. The double guide wheels cooperate with the slewing mechanism to reduce the risk of derailment.

In order to control the different lifting timings of the double guide wheels, keeping the lift plate inclined can improve the departure angle of the whole vehicle, and a position adjustment hydraulic cylinder 7 is also provided. On the tractor, the front end of the piston rod of the position adjusting hydraulic pressure is connected to the lifting plate 31, and the connecting position of the position adjusting hydraulic pressure on the lifting plate 31 and the connecting position of the lifting swing arm 32 are misaligned along the advancing direction of the road-railway vehicle.

In the road state, the position adjustment hydraulically retracts the extension rod, and in the railway state, the position adjustment hydraulic extension rod extends, so that the lifting wheel base and the track are basically horizontal to achieve the guiding function.

The road lock mechanism 8 can lock and fix the raised guide wheel. The specific road lock mechanism 8 includes a lift lock hole plate 81 arranged on the lift plate 31 or the lift wheel base 2, a locking cylinder 82 and a fixed lock hole. Plate 83, the top of the lifting lock hole plate 81 is provided with a lock hole, the road lock fixing plate is fixed on both sides of the body of the road-rail dual-purpose vehicle, and the locking cylinder 82 and the fixed lock hole plate 83 are fixed on the road lock. On the plate, the fixed lock hole plate 83 is provided with a fixed lock hole, the fixed lock hole is coaxial with the extension rod of the locking oil cylinder 82, and the lock hole is coaxial with the fixed lock hole when the lifting lock hole plate 81 is raised to the highest position.

The locking oil cylinder 82 extends the piston rod and inserts it into the lock hole of the lifting lock hole plate 81, and then inserts it into the fixed lock hole of the fixed lock hole plate 83 to fix the lifting lock hole plate 81 and its connected lifting wheel seat and guide wheel. .

In the highway state, the locking oil cylinder is extended, and the locking oil cylinder extension rod locks the lifting plate or the lifting lock hole plate 81 of the lifting wheel base, so that the upper and lower lifting mechanism fails; in the railway state, the locking oil cylinder retracts, The lifting and lowering of the lifting keyhole plate 81 is allowed.

In order to connect the components in the present invention with the vehicle body, a lift frame 41 and an adjustment structure frame 71 are also designed respectively. The lift structure frame is arranged at the rear and upper part of the guide wheel, and the adjustment structure frame 71 is arranged in front of the guide wheel. above,

In the present invention, the lifting and swinging arms 32 are arranged in pairs, and two swinging arm connecting plates 33 are connected between the two lifting and swinging arms 32. A hinge hole, the hinge hole is a hinge shaft, a rotating seat 35 is arranged between the hinge shafts in the two lifting hinge hole plates 34, the middle of the rotating seat 35 is open, and the front end of the piston rod of the lifting cylinder mechanism 4 is inserted into the rotating seat 35. In the opening, 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 , and the upper piston rod of the shock absorbing spring 42 is provided with a shock absorbing limit 43 . The cylinder of the lift cylinder mechanism is hinged on the lift frame 41, the hydraulic cylinder for position adjustment is hinged on the adjustment frame 71, the top of the lift swing arm 32 is hinged on the adjustment frame 71, the lift frame 41 and the adjustment The structural frame 71 is provided on the body of the road and rail vehicle.

The lifting mechanism frame 41 is provided with lugs for hinged connection of the cylinder body of the lifting cylinder mechanism, and two pairs of lug structures are provided on the adjustment structure frame 71 for the connection of the two lifting swing arms 32. It is arranged symmetrically in the chassis structure to provide the lifting torque evenly.

In the present invention, a road-railway vehicle chassis 9 is provided with a road-railway vehicle guide buffer mechanism, and the road-railway vehicle guide buffer mechanism is arranged on the lower part of the chassis 9. The chassis is a refitted chassis for a second-class vehicle. There are two groups of modified beams in the middle, the elevator frame 41 and the adjustment structure frame 71 are arranged on the two groups of beams, the two sides of the two beams of the chassis 9 are provided with the road lock mechanism 8, and the height of the front guide wheels is low when the two pairs of guide wheels are raised. at the rear guide wheel height.

A road-rail dual-purpose vehicle with a guide structure and a chassis 9, the chassis 9 is the chassis 9 described in claim 9, and a hydraulic power mechanism is also provided in the vehicle, and the hydraulic power mechanism provides hydraulic power for the position adjustment hydraulic pressure and the lifting cylinder mechanism 4 .

The working process of the present invention:

In the highway state, the lifting cylinder mechanism is hingedly connected to the swing arm connecting plate through the rotating seat, which drives the entire lifting swing arm to rise; the position adjustment hydraulic cylinder shrinks, adjusts the state of the lifting wheel seat, and the locking cylinder of the highway lock mechanism extends and locks. The extension rod of the oil stop cylinder fixes the lifting plate or the lifting keyhole plate of the lifting wheel base, so that the upper and lower lifting mechanism fails.

In the railway state, the locking cylinder of the highway lock mechanism retracts, and the extension rod of the locking cylinder retracts, allowing the lifting and lowering of the keyhole plate; The fall of the arm; the extension rod of the position adjustment hydraulic cylinder is extended, so that the lifting wheel base and the track are basically horizontal to realize the guiding function. When passing through the curve, through the swing of the slewing mechanism, the swing amount is limited by the buffer spring and the reserved amount between the buffer guide and the buffer guide, which improves the passability of the curve and ensures the guiding effect.

The invention is provided with a road-rail dual-purpose vehicle chassis with a road-rail dual-purpose vehicle guiding buffer mechanism, the road-rail dual-purpose vehicle guiding buffer mechanism is arranged at the lower part of the chassis, and the elevator frame and the adjustment structure frame are arranged on the chassis. , the side of the chassis is provided with the road lock mechanism, and the height of the front guide wheel is lower than the height of the rear guide wheel when the two pairs of guide wheels are raised.

The present invention is provided with a road-railway vehicle with a road-railway vehicle guide buffer mechanism chassis, the chassis is the chassis described in claim 9, and a hydraulic power mechanism is also provided in the vehicle, and the hydraulic power mechanism is a position adjustment hydraulic pressure and a lifting oil cylinder mechanism Provides hydraulic power.

Claims (10)

1. A guide buffer mechanism of a combined car for both road and railway, a chassis thereof and the combined car for both road and railway comprise a guide wheel set, wherein the guide wheel set comprises at least one pair of guide wheels, and a wheel shaft (11) is arranged between the guide wheels, and the guide buffer mechanism is characterized by also comprising a lifting wheel seat (2), a swing mechanism (5), a lifting frame (3) and a lifting oil cylinder mechanism (4);

the lifting frame (3) comprises a lifting plate (31) and a lifting swing arm (32), the lower part of the lifting swing arm (32) is connected with the lifting plate (31), and the upper part of the lifting swing arm (32) is connected with the combined car;

the piston end of the lifting oil cylinder mechanism (4) is hinged to the lifting swing arm (32), and the cylinder body of the lifting oil cylinder mechanism (4) is hinged to the combined car;

the swing mechanism (5) comprises a fixed part (51) and a rotating part (52), wherein the fixed part (51) and the rotating part (52) are respectively and fixedly arranged on the lifting plate (31) and the lifting wheel seat (2) or the lifting wheel seat (2) and the lifting plate (31);

the wheel shaft (11) is arranged on the lifting wheel seat (2).

2. The convertible vehicle for road and railway guiding and buffering mechanism as well as the chassis and the convertible vehicle for road and railway as claimed in claim 1, the buffer structure is characterized in that a rotation buffer (6) is arranged between the lifting plate (31) and the lifting wheel seat (2), the rotation buffer (6) comprises 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 arranged on two 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) keep a distance as a buffer distance, the buffer guide (63) is arranged on the guide fixing seat (64) through a rotation ring cut in a rotation structure, and 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 the lifting wheel seat (2) and the lifting plate (31).

3. The dual-purpose bus and chassis as well as the dual-purpose bus and chassis as claimed in claim 1, wherein the two pairs of guide wheels are provided, wheel shafts (11) of the two pairs of guide wheels are arranged in parallel at the front and rear parts of the lifting wheel seat (2), the wheel shafts (11) are arranged perpendicular to the advancing direction of the dual-purpose bus, and the front guide wheel (12) is lower than the rear guide wheel (13).

4. The guide and buffer mechanism of the convertible vehicle for roads and railways as claimed in claim 1, further comprising a position adjusting hydraulic cylinder (7), wherein a cylinder body of the position adjusting hydraulic cylinder is arranged on the lifting swing arm (32) or the convertible vehicle for roads and railways, the front end of a piston rod of the position adjusting hydraulic cylinder is connected to the lifting plate (31), and the connecting position of the position adjusting hydraulic cylinder on the lifting plate (31) and the connecting position of the lifting swing arm (32) are staggered along the advancing direction of the convertible vehicle for roads and railways.

5. The convertible bus/railway guide buffer mechanism, the chassis thereof and the convertible bus/railway, as claimed in claim 4, further comprising a highway lock mechanism (8), wherein the highway lock mechanism (8) comprises a lifting lockhole plate (81) arranged on the lifting plate (31) or the lifting wheel seat (2), a locking oil cylinder (82) and a fixed lockhole plate (83), a lockhole is formed in the top of the lifting lockhole plate (81), a cylinder body of the locking oil cylinder (82) is fixed on the convertible bus/railway, a fixed lockhole is formed in the fixed lockhole plate (83), the fixed lockhole plate (83) is fixed on the convertible bus/railway, the fixed lockhole is coaxial with an extension rod of the locking oil cylinder (82), and the lifting lockhole plate (81) is coaxial with the fixed lockhole when being lifted to the highest position.

6. The convertible vehicle for roads and irons, as well as the chassis and the convertible vehicle for roads and irons of the convertible vehicle of the road type, wherein the road lock mechanism (8) further comprises a road lock fixing plate fixed on the road lock fixing plate, and the lock cylinder (82) and the fixed lock hole plate (83) are fixed on the road lock fixing plate.

7. The convertible vehicle for roads and irons, as well as the chassis and the convertible vehicle for roads and irons of the guiding mechanism, as claimed in claim 6, further comprising a lifting frame (41) and an adjusting frame (71), wherein the lifting frame is disposed at the rear upper part of the guide wheel, the adjusting frame (71) is disposed at the front upper part of the guide wheel, the cylinder body of the lifting swing arm (32) is hinged on the lifting frame (41), the cylinder body of the position adjusting hydraulic cylinder body is hinged on the adjusting frame (71), the top of the lifting swing arm (32) is hinged on the adjusting frame (71), and the lifting frame (41) and the adjusting frame (71) are disposed on the body of the convertible vehicle for roads and irons.

8. The dual-purpose vehicle for roads and railways as well as the chassis and the dual-purpose vehicle for roads and railways as claimed in claim 7, wherein the lifting swing arms (32) are arranged in pairs, two swing arm connecting plates (33) are connected between the two lifting swing arms (32), a lifting hinged pore plate (34) is arranged between every two swing arm connecting plates (33), hinged shaft holes are formed in the lifting hinged pore plate (34), hinged shafts are arranged in the hinged holes, a rotating seat (35) is arranged between the hinged shafts in the two lifting hinged pore plates (34), a middle opening of the rotating seat (35) is formed, the front end of a piston rod of the lifting oil cylinder mechanism (4) is inserted into an opening of the rotating seat (35), a damping spring (42) is further sleeved on the piston rod, the lower part of the damping spring (42) is connected with the rotating seat (35), and a damping limit (43) is arranged on the piston rod on the upper part of the damping spring (42).

9. The chassis and the combined rail and road vehicle are provided with the guide buffer mechanism of the combined rail and road vehicle as claimed in claim 8, and are characterized in that the guide buffer mechanism of the combined rail and road vehicle is arranged at the lower part of the chassis (9), the elevator framework (41) and the adjusting structure frame (71) are arranged on the chassis (9), the road lock mechanism (8) is arranged on the side surface of the chassis (9), and the height of the front guide wheel is lower than that of the rear guide wheel when the two pairs of guide wheels are lifted.

10. A combined vehicle for road and railway, comprising the guiding and buffering mechanism as claimed in claim 9, and a chassis and a combined vehicle for road and railway, wherein the chassis (9) is the chassis (9) as claimed in claim 9, and a hydraulic power mechanism is further provided in the combined vehicle, and the hydraulic power mechanism provides hydraulic power for the position adjusting hydraulic and lifting cylinder mechanism (4).

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