CN215210255U - Transport vehicle - Google Patents

Abstract

The utility model provides a transport vehicle, which relates to the technical field of track laying, and is used for transporting magnetic suspension track panels, and comprises a portal frame and a traveling mechanism, wherein the portal frame is connected with a plurality of traveling mechanisms, and the traveling mechanism is suitable for driving the portal frame to move along the length direction of a track bearing beam; the walking mechanism comprises a wheel structure, a steering driving device and an upper guide mechanism, and the steering driving device is connected with the wheel structure in a driving mode so as to drive the wheel structure to steer actively in the tunnel and the roadbed; the wheel structure is connected with the upper guide mechanism, and when the transport vehicle runs to the U-shaped bridge, the upper guide mechanism is suitable for driving the wheel structure to passively steer on the U-shaped bridge through contact extrusion with the side wall of the U-shaped bridge. The utility model discloses a transport vechicle turns to through the initiative and turns to passively and combine together, can realize directly walking at the full road section of magnetic levitation circuit and transport the section of track.

Description

Transport vehicle

Technical Field

The utility model relates to a technical field is laid to the track, particularly, relates to a transport vechicle.

Background

When a magnetic suspension line is constructed, the track panel needs to be transported to a laying site. The existing track panel transport vehicle can only run in a tunnel and a roadbed section of a magnetic suspension line, when entering a U-shaped bridge section, the distance between wheels and the side wall of the U-shaped bridge is small, the wheels are easy to collide with the U-shaped bridge or are clamped into the U-shaped bridge, the running in the whole road section of the magnetic suspension line cannot be realized, and special tracks or other auxiliary equipment laid in advance is usually needed, so that the construction is inconvenient, and the construction range is limited.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving current section of track transport vechicle and can't walk capable technical problem in the whole road section of magnetic suspension circuit.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a transport vehicle comprises a portal frame and a traveling mechanism, wherein the portal frame is connected with a plurality of traveling mechanisms, and the traveling mechanism is suitable for driving the portal frame to move along the length direction of a rail bearing beam;

the walking mechanism comprises a wheel structure, a steering driving device and an upper guide mechanism, wherein the steering driving device is in driving connection with the wheel structure so as to drive the wheel structure to actively steer in the tunnel and the roadbed; the wheel structure is connected with the upper guide mechanism, and when the transport vehicle runs to the U-shaped bridge, the upper guide mechanism is suitable for driving the wheel structure to passively steer the U-shaped bridge through contact extrusion with the side wall of the U-shaped bridge.

When the transport vehicle is in a roadbed or a tunnel section, the steering driving device drives the wheel structure to rotate so as to change the direction of the wheel structure, and active steering is realized; after entering the U-shaped bridge section, the steering force is generated through the contact extrusion between the upper guide mechanism and the side wall of the U-shaped bridge, so that the wheel structure is steered along with the bending of the side wall of the U-shaped bridge, the passive steering is realized, and the collision between a transport vehicle and the U-shaped bridge section is avoided. And then make this transport vechicle can directly walk and transport the rail section at the whole road section including tunnel, road bed and U type bridge of magnetic levitation line, need not with the help of special track or other auxiliary assembly laid in advance, can adapt to the operating condition better, enlarge construction scope.

Optionally, the wheel structure comprises a wheel set bracket and a wheel, the wheel being mounted on the wheel set bracket; the wheel set support is suitable for being connected with the steering driving device and the upper guide mechanism.

Optionally, the upper guide mechanism includes an upper guide wheel and a distance adjusting assembly, the distance adjusting assembly is mounted on the wheel set bracket, and the distance adjusting assembly is connected with the upper guide wheel and is adapted to adjust a distance between the upper guide wheel and the side wall of the U-shaped bridge.

Optionally, the distance adjusting assembly includes a fastening device, an adjusting pad and a base, the upper guide wheel is mounted on the base, and the fastening device connects and fixes the base and the wheel set bracket; when the fastening device is loosened, the adjusting pad is placed between the base and the wheel set bracket to adjust the distance between the upper guide wheel and the side wall of the U-shaped bridge.

Optionally, the distance adjusting assembly comprises a steering plate and an adjusting oil cylinder, the steering plate is rotatably connected with the wheel set support, the adjusting oil cylinder and the upper guide wheel are fixedly connected with the steering plate, and the adjusting oil cylinder is suitable for driving the steering plate to rotate relative to the wheel set support so as to adjust the distance between the upper guide wheel and the side wall of the U-shaped bridge.

Optionally, the walking mechanism further comprises an equalizing beam, two ends of the equalizing beam are respectively rotatably connected with the two wheel set supports, the middle of the equalizing beam is hinged with the support legs of the gantry, and the two wheel set supports are suitable for swinging around the equalizing beam;

one end of the steering driving device is connected with the equalizing beam, and the other end of the steering driving device is in driving connection with the wheel set support to drive the wheels to steer.

Optionally, the wheel set support assembly further comprises an angle measuring device, the angle measuring device is arranged at the joint of the two ends of the equalizing beam and the wheel set support, and the angle measuring device is used for measuring the rotation angle of the wheel set support relative to the equalizing beam.

Optionally, the running mechanism further comprises a lower guide mechanism, the lower guide mechanism is mounted on the equalizing beam and close to one side of the rail supporting beam, and the lower guide mechanism is in contact with the rail supporting beam to limit the collision between the parts of the transport vehicle except for the lower guide mechanism and the rail supporting beam.

Optionally, the distance measuring device further comprises a distance measuring instrument, the distance measuring instrument is arranged on one side, close to the rail bearing beam, of the walking mechanism, and the distance measuring instrument is used for measuring the distance between the inner side of the walking mechanism and the rail bearing beam.

Optionally, the lifting mechanism is arranged on the gantry and is suitable for being connected with a track panel hanger to drive the track panel hanger to lift and descend.

Drawings

Fig. 1 is a front view of a transport vehicle according to an embodiment of the present invention;

fig. 2 is a top view of a transport vehicle according to an embodiment of the present invention;

fig. 3 is a side view of the transportation vehicle according to the embodiment of the present invention when walking on the U-shaped bridge;

FIG. 4 is a front view of the running gear according to the embodiment of the present invention;

FIG. 5 is a top view of a first embodiment of a running gear according to the present invention;

FIG. 6 is a side view of a first embodiment of a running gear according to the present invention;

FIG. 7 is a top view of a second embodiment of a running gear according to the present invention;

fig. 8 is a schematic structural view of a track panel hanger according to an embodiment of the present invention;

fig. 9 is a schematic view of an installation structure between a roadbed and a track supporting beam according to an embodiment of the present invention;

fig. 10 is a schematic view of an installation structure between a tunnel and a support rail beam according to an embodiment of the present invention.

Description of reference numerals:

1-a power system; 2, a hoisting mechanism; 3-a driver cab; 4-gantry; 5-a running mechanism; 51-a balance beam; 52-angle measuring means; 53-wheel set support; 54-lower guide mechanism; 55-upper guide mechanism; 5511-a fastening device; 5512-an adjustment pad; 5513-a base; 5521-a first pin; 5522-a deflector plate; 5523-a second pin; 5524-a third pin; 5525-adjusting oil cylinder; 5526-a cylinder block; 553-an upper guide wheel; 554-a stop device; 56-steering drive; 57-steering synchronization means; 58-a wheel; 6-track panel hanging bracket; 61-anchor rod; 62-a press plate; 63-a hanger; 7-a pull rod; 8-a range finder; 9-U-shaped bridge; 10-a rail-bearing beam; 11-a roadbed; 12-a tunnel; 13-track panel.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, embodiments accompanied with figures are described in detail below.

In the description of the present invention, it should be noted that terms such as "upper", "lower", "front", "rear", and the like in the embodiments indicate terms of orientation, and are only used for simplifying the description of positional relationships based on the drawings of the specification, and do not represent that the elements, devices, and the like indicated in the description must be operated according to specific orientations and defined operations and methods, configurations, and such terms of orientation do not constitute limitations of the present invention.

In addition, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "coupled" are to be construed broadly and may include, for example, a fixed connection, a detachable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Herein, a coordinate system XYZ is provided, wherein a forward direction of the X-axis represents a right direction, a backward direction of the X-axis represents a left direction, a forward direction of the Y-axis represents a front direction, a backward direction of the Y-axis represents a rear direction, a forward direction of the Z-axis represents an upper direction, and a backward direction of the Z-axis represents a lower direction.

As shown in fig. 1-3, 9, and 10, the utility model provides a transport vechicle for transportation magnetic levitation track panel 13, including portal 4 and walking mechanism 5, portal 4 is connected with a plurality of walking mechanism 5, it is suitable for the drive to walk mechanism 5 portal 4 removes along bearing rail 10 length direction.

As shown in fig. 4-6, the running gear 5 comprises a wheel structure, a steering driving device 56 and an upper guide gear 55, wherein the steering driving device 56 is in driving connection with the wheel structure to drive the wheel structure to actively steer in the tunnel 12 and the roadbed 11; the wheel structure is connected with the upper guide mechanism 55, and when the transport vehicle runs to a U-shaped bridge, the upper guide mechanism 55 is suitable for driving the wheel structure to passively steer at the U-shaped bridge 9 through contact extrusion with the side wall of the U-shaped bridge 9.

When the track supporting beam 10 is arranged on a straight line section of a bridge, a roadbed or a tunnel, the track supporting beam is arranged in the forward direction; if the track-bearing beam 10 is also arranged in the forward direction in the curve section, the track panel on the track-bearing beam 10 and the magnetic-levitation train generate lateral force which can counteract the centrifugal force when the magnetic-levitation train passes through the curve section, so that the magnetic-levitation train cannot pass through the curve section smoothly; therefore, when the rail bearing beam 10 is arranged on the curved section of a bridge, a roadbed and a tunnel, the rail bearing beam is generally arranged in a lateral inclined mode, as shown in figures 3, 9 and 10, and the magnetic suspension train is guaranteed to have enough centrifugal force to smoothly pass through the curved section when passing through the curve.

In the embodiment, the gantry 4 is an integral bearing and supporting structure of the transport vehicle, and in order to enable the transport vehicle to smoothly move along the length direction of the track supporting beam 10 in both a straight section and a curved section, the gantry 4 is in a door-shaped frame in section so as to span across the track panel 13 and the track supporting beam 10; four corners below the gantry 4 are respectively connected with the walking mechanism 5, and the gantry 4 is driven by the walking mechanism 5 to move along the length direction of the rail bearing beam 10.

The gantry 4 is also provided with a power system 1 and a cab 3, and the power system 1 is used for providing power for the whole vehicle; cab 3 can set up two, is located respectively 4 moving direction's of portal both ends (also be the positive and negative direction of X axle in fig. 1), when the transport vechicle was walked, the walking direction of the whole car of cab 3 control of right-hand member, left two of cab 3 of left end are only responsible for the transport vechicle walk the turning to of mechanism, under the emergency, cab 3 of left end can switch over fast and gain whole car control right, two cab 3's control right is the same, can realize the two-way driving of transport vechicle through controlling two cab 3.

The wheel structure comprises a wheel set bracket 53 and a wheel 58, wherein the wheel 58 is arranged at the bottom of the wheel set bracket 53; the wheel set carrier 53 is adapted to be connected to the steering drive 56 and the upper guide 55. The upper guide mechanism 55 is installed on the wheel set bracket 53 and is adapted to be close to one side of the side wall of the U-shaped bridge 9.

The running mechanism 5 can adopt two control modes of passive control and active control: the active steering control mode is realized by driving the wheels 58 to actively steer through the steering driving device 56; the contact extrusion of the upper guide mechanism 55 and the U-shaped bridge 9 generates an acting force, the distance from the reaction force of the side wall of the U-shaped bridge 9 of the upper guide mechanism 55 to the rotation center of the wheel set bracket 53 is a steering force arm, and the wheels 58 are driven by the acting force and the moment generated by the steering force arm to realize a passive steering control mode.

The U-shaped bridge 9 is a straight line beam, a broken line is formed at the joint of the two U-shaped bridges 9, and the situation that the transport vehicle travelling mechanism 5 climbs an inclined plane at the bottom of the U-shaped bridge or the transport vehicle travelling mechanism 5 is blocked can occur only in a passive steering mode through simulation of the trafficability characteristic of the broken line section, so that when the transport vehicle passes through the broken line section at the joint of the two U-shaped bridges, the active steering control mode can be quickly switched to, and after the joint is passed, the passive steering control mode is adopted in the next U-shaped bridge section; when entering the U-shaped bridge 9 from the tunnel 12, the active steering control mode is adopted, the position of the transport vehicle is adjusted and is aligned with the entrance of the U-shaped bridge 9 so as to facilitate the running mechanism 5 to enter the U-shaped bridge 9, and after the transport vehicle completely enters the U-shaped bridge 9, the transport vehicle is switched to enter the passive steering control mode; when entering the U-shaped bridge 9 from the roadbed 11, the active steering control mode is adopted, the position of the transport vehicle is adjusted and is aligned with the inlet of the U-shaped bridge 9 so as to facilitate the running mechanism 5 to enter the U-shaped bridge 9, and after the transport vehicle completely enters the U-shaped bridge 9, the transport vehicle is switched to enter the passive steering control mode; when entering the tunnel 12 from the U-shaped bridge 9, switching to the active steering control mode; when entering the roadbed 11 from the U-shaped bridge 9, the active steering control mode is switched.

Optionally, the upper guide mechanism 55 includes an upper guide wheel 553 and a distance adjustment assembly mounted on the wheelset bracket 53, the distance adjustment assembly being connected to the upper guide wheel 553 and adapted to adjust the distance between the upper guide wheel 553 and the sidewall of the U-shaped bridge 9.

In this embodiment, the upper guide wheels 553 are adapted to be in contact with the U-shaped bridge 9 under the passive mode control. The distance adjusting assembly is used for adjusting the distance between the upper guide wheel 553 and the U-shaped bridge 9, the upper guide wheel 553 and the side wall of the U-shaped bridge 9 have a certain clearance to allow the transport vehicle to better pass through the curved section of the U-shaped bridge 9, and when the radius of the curved section of the U-shaped bridge 9 is larger or in the straight section, the distance from the upper guide wheel 553 of the upper guide mechanism 55 to the side wall of the U-shaped bridge 9 does not need to be adjusted by a large amount, and can be adjusted to a certain fixed value in advance.

Optionally, as shown in fig. 5, the distance adjusting assembly includes a fastening device 5511, an adjusting pad 5512 and a base 5513, the upper guide wheel 553 is mounted on the base 5513, and the fastening device 5511 connects and fixes the base 5513 and the wheel set bracket 53; when the fastening means 5511 is released, the adjustment pad 5512 is placed between the base 5513 and the wheelset bracket 53 to adjust the distance between the upper guide wheel 553 and the side wall of the U-shaped bridge 9.

In this embodiment, the upper guide wheel 553 is arranged relatively perpendicular to the U-shaped bridge 9, the upper guide wheel 553 is connected to a fixing frame on the wheelset bracket 53 through the base 5513, the fixing frame is arranged perpendicular to the wheelset bracket 53, and the adjusting pad 5512 is arranged between the base 5513 and the fixing frame of the wheelset bracket 53; when it is necessary to enlarge or reduce the distance between the upper guide wheel 553 and the side wall of the U-shaped bridge 9, the fastening device 5511 is loosened, the number of the adjustment pads 5512 between the base 5513 and the fixing frame of the wheel set bracket 53 is increased or decreased, and then the fastening device 5511 is locked to complete the adjustment process.

In another embodiment, the fastening device 5511 can be replaced by a rotary screw rod or a screw rod.

Optionally, as shown in fig. 7, the distance adjustment assembly further includes a steering plate 5522 and an adjusting cylinder 5525, the steering plate 5522 is rotatably connected to the wheelset bracket 53, the adjusting cylinder 5525 and the upper guide wheel 553 are both fixedly connected to the steering plate 5522, and the adjusting cylinder 5525 is adapted to drive the steering plate 5522 to rotate relative to the wheelset bracket 53 to adjust the distance between the upper guide wheel 553 and the sidewall of the U-shaped bridge 9.

In this embodiment, the steering plate 5522 is in a triangular shape, and the first pin 5521, the second pin 5523, and the third pin 5524 are respectively located at three corners of the steering plate 5522; the steering plate 5522 is rotatably connected with the wheel set bracket 53 through a first pin 5521, and the steering plate 5522 can rotate around the first pin 5521; the steering plate 5522 and the upper guide wheel 553 are fixedly connected through a second pin 5523, and the upper guide wheel 553 rotates around the first pin 5521 together with the steering plate 5522; the adjusting oil cylinder 5525 is fixedly connected with the steering plate 5522 through a third pin 5524, and the adjusting oil cylinder 5525 rotates around the first pin 5521 along with the steering plate 5522; the adjusting cylinder 5525 is fixed on the wheel set bracket 53 through the cylinder base 5526, and the adjusting cylinder 5525 drives the steering plate 5522 to rotate around the first pin 5521 through the extension and retraction of the piston rod, so that the distance between the upper guide wheel 553 and the side wall of the U-shaped bridge 9 is adjusted.

A limiting device 554 is further included for limiting the rotation position of the steering plate 5522; the limiting device is in a contact type or a non-contact type, a limiting rod can be used in the contact type, one end of the limiting rod is fixed on the wheel set bracket 53, and the other end of the limiting rod faces the steering plate 5522 and is used for limiting in a contact manner with the steering plate 5522; a non-contact sensor can be adopted, and the position state of the steering plate 5522 is detected by the sensor, so that the adjustment oil cylinder 5525 is controlled to stop to limit the steering plate 5522.

In another embodiment, the adjusting cylinder 5525 may be replaced by an electric push rod.

Optionally, the running mechanism 5 further includes an equalizing beam 51, two ends of the equalizing beam 51 are respectively rotatably connected to the two wheel set brackets 53, a middle portion of the equalizing beam 51 is hinged to the support legs of the gantry 4, and the two wheel set brackets 53 are adapted to swing around the equalizing beam 51.

One end of the steering driving device 56 is connected with the equalizing beam 51, and the other end of the steering driving device 56 is in driving connection with the wheel set bracket 53 to drive the wheels 58 to steer.

In this embodiment, two ends of the equalizing beam 51 are respectively rotatably connected to one of the wheel set brackets 53, and the wheel set bracket 53 can rotate around the axis to release the steering freedom of the wheel set bracket 53; the middle part of the equalizing beam 51 is hinged with the supporting legs of the door frame 4, on one hand, the stress balance of the two wheel set supports 53 can be realized, and on the other hand, the wheel set supports 53 swing around the hinged rotating shaft in the middle part of the equalizing beam 51, so that wheels have certain passive step-crossing capability.

The steering driving device 56 provides driving force for the active steering of the wheels 58; when the running gear 5 is in the active steering control mode, the steering drive device 56 controls the steering of the corresponding wheels 58; when the running gear 5 is in the passive steering control mode, the steering drive device 56 neither provides a driving force for steering nor hinders steering of the running gear, and is in a no-load or a little-load state.

Optionally, the device further comprises an angle measuring device 52, the angle measuring device 52 is disposed at a connection between two ends of the equalizing beam 51 and the wheel set bracket 53, and the angle measuring device 52 is configured to measure a rotation angle of the wheel set bracket 53 relative to the equalizing beam 51.

In the present embodiment, the turning radius of the transport vehicle is controlled based on the rotation angle measured by the angle measuring device 52.

Optionally, the running gear 5 further comprises a lower guide mechanism 54, the lower guide mechanism 54 is mounted on the equalizing beam 51 and close to one side of the rail bearing beam 10, and the lower guide mechanism 54 is in contact with the rail bearing beam 10 to limit the collision of the parts of the transport vehicle except for the lower guide mechanism 54 and the rail bearing beam 10.

In this embodiment, the lower guide mechanism 54 is installed at a lower position in the middle of the equalizing beam, the lower guide mechanism 54 is provided with a lower guide wheel, the lower guide wheel is perpendicular to the equalizing beam 51 and points to the rail bearing beam 10, when the transport vehicle is deviated, the lower guide wheel is firstly in contact with the rail bearing beam 10 for guiding, so that collision between other parts of the transport vehicle and the rail bearing beam 10 can be avoided, and the protection of the rail bearing beam 10 and the transport vehicle is realized.

Optionally, the running gear 5 further comprises a steering synchronizer 57, two ends of the steering synchronizer 57 are hinged to the two wheel set brackets 53 respectively, and the two wheel set brackets 53 are adapted to keep steering angle synchronization through the steering synchronizer 57.

In this embodiment, since the running gear 5 includes two wheel set brackets 53, the steering synchronization device 57 can ensure synchronization and coincidence of the steering angles of the two wheel set brackets 53.

Optionally, the distance measuring device further comprises a distance measuring instrument 8, the distance measuring instrument 8 is arranged on one side, close to the rail bearing beam 10, of the walking mechanism 5, and the distance measuring instrument 8 is used for measuring the distance between the inner side of the walking mechanism 5 and the rail bearing beam 10.

In this embodiment, the distance between the running mechanism 5 and the rail supporting beam 10 can be measured by the distance measuring instrument 8, and when an active steering control mode is adopted for a roadbed and/or a tunnel, the steering of the running mechanism 5 can be adjusted in real time by the distance value measured by the distance measuring instrument 8, so that the transport vehicle can be ensured to run on a relatively fixed line, and the collision between the transport vehicle and the rail supporting beam 10 can be avoided.

Optionally, the lifting mechanism 2 is further included, the lifting mechanism 2 is arranged on the gantry 4, and the lifting mechanism 2 is suitable for being connected with a track panel hanger 6 to drive the track panel hanger 6 to lift and descend.

In this embodiment, the track panel hanger 6 is located below the gantry 4, the track panel 13 is placed on the track panel hanger 6, then the track panel hanger 6 is lifted by the lifting mechanism 2, and the transport vehicle is moved to hoist the track panel 13 to the construction position.

Optionally, the device further comprises a pull rod 7, and the gantry 4 is connected with the pull rod 7 so as to be connected with the track panel hanger 6 through the pull rod 7.

In this embodiment, one end of the pull rod 7 is detachably connected to the leg of the gantry 4, the other end of the pull rod 7 is detachably connected to the track panel hanger 6, and the gantry 4 supports the track panel hanger 6 through the pull rod 7 to prevent the track panel hanger 6 from shaking.

As shown in fig. 8, the track panel hanger 6 comprises anchor rods 61, a pressure plate 62 and a hanger 63, the hanger 63 is adapted to support the track panels 13, and then the track panels 13 are stacked in layers, and finally the pressure plate 62 and all the track panels 13 are locked on the hanger 63 by the anchor rods 61. By adopting the method, the multi-layer track panel can be lifted and transported at one time, and the good stress state of the track panel 13 in the lifting and transporting process can be ensured.

Although the present disclosure has been described above, the scope of the present disclosure is not limited thereto. Various changes and modifications may be made by those skilled in the art without departing from the spirit and scope of the present disclosure, and these changes and modifications are intended to fall within the scope of the present disclosure.

Claims (10)

1. The transport vehicle is characterized by comprising a portal frame (4) and a traveling mechanism (5), wherein the portal frame (4) is connected with a plurality of the traveling mechanism (5), and the traveling mechanism (5) is suitable for driving the portal frame (4) to move along the length direction of a rail bearing beam (10);

the running mechanism (5) comprises a wheel structure, a steering driving device (56) and an upper guide mechanism (55), wherein the steering driving device (56) is in driving connection with the wheel structure to drive the wheel structure to actively steer in the tunnel (12) and the roadbed (11); the wheel structure is connected with the upper guide mechanism (55), and when the transport vehicle runs to the U-shaped bridge, the upper guide mechanism (55) is suitable for driving the wheel structure to passively steer the U-shaped bridge (9) through contact extrusion with the side wall of the U-shaped bridge (9).

2. Carriage as claimed in claim 1, characterized in that the wheel structure comprises a wheel set support (53) and a wheel (58), the wheel (58) being mounted on the wheel set support (53); the wheel set support (53) is suitable for being connected with the steering drive device (56) and the upper guide mechanism (55).

3. Carriage as in claim 2, characterized in that said upper guide means (55) comprise an upper guide wheel (553) and a distance adjustment assembly mounted on said wheelset support (53), connected to said upper guide wheel (553) and adapted to adjust the distance between said upper guide wheel (553) and the side wall of said U-bridge (9).

4. Carriage as in claim 3, characterized in that said pitch assembly comprises a fastening device (5511), an adjustment pad (5512) and a base (5513), said upper guide wheel (553) being mounted on said base (5513), said fastening device (5511) connecting said base (5513) with said wheelset bracket (53); when the fastening means (5511) is released, the adjustment pad (5512) is placed between the base (5513) and the wheelset bracket (53) to adjust the distance between the upper guide wheel (553) and the side wall of the U-bridge (9).

5. Transport carriage as claimed in claim 3, characterized in that said distance adjustment assembly comprises a steering plate (5522) and an adjustment cylinder (5525), said steering plate (5522) being rotatably connected to said wheelset support (53), said adjustment cylinder (5525) and said upper guide wheel (553) being fixedly connected to said steering plate (5522), said adjustment cylinder (5525) being adapted to drive said steering plate (5522) in rotation with respect to said wheelset support (53) to adjust the distance between said upper guide wheel (553) and the side wall of said U-bridge (9).

6. The carriage as claimed in claim 2, characterized in that said running gear (5) further comprises an equalizing beam (51), both ends of said equalizing beam (51) being rotatably connected to two said wheelset supports (53), respectively, the middle of said equalizing beam (51) being hinged to the legs of said mast (4), both said wheelset supports (53) being adapted to swing around said equalizing beam (51);

one end of the steering driving device (56) is connected with the equalizing beam (51), and the other end of the steering driving device (56) is in driving connection with the wheel set bracket (53) to drive the wheels (58) to steer.

7. Transport carriage according to claim 6, characterized in that it further comprises angle measuring means (52), said angle measuring means (52) being arranged at the connection of the wheel set bracket (53) and the two ends of the equalizing beam (51), said angle measuring means (52) being adapted to measure the angle of rotation of the wheel set bracket (53) relative to the equalizing beam (51).

8. The carriage as claimed in claim 6 or 7, characterized in that the running gear (5) further comprises a lower guide gear (54), the lower guide gear (54) is mounted on the equalizing beam (51) and on the side close to the rail beam (10), and the lower guide gear (54) is in contact with the rail beam (10) to limit the collision of the carriage with the rail beam (10) except for the lower guide gear (54).

9. Carriage as in claim 1, characterized in that it further comprises a distance meter (8), said distance meter (8) being arranged on the side of said running gear (5) close to said load-bearing beam (10), said distance meter (8) being intended to measure the distance between the inside of said running gear (5) and said load-bearing beam (10).

10. A carriage as claimed in claim 1, characterised by further comprising a hoist (2), the hoist (2) being provided on the gantry (4), the hoist (2) being adapted to be connected to a track panel hanger (6) to drive the track panel hanger (6) to raise and lower.

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