Beam replacement machine

Abstract

This application relates to the field of bridge girder replacement technology and provides a girder replacement machine. The girder replacement machine includes a main girder and two traveling sections spaced apart along the longitudinal direction of the main girder. Each traveling section includes a telescopic frame connected to the bottom side of the main girder, a base plate connected to the bottom side of the telescopic frame, a set of traveling wheels connected to the bottom side of the base plate, and a drive device mounted on the base plate. The center of the top of the telescopic frame is rotatably connected to the main girder, and the center of the bottom of the telescopic frame is rotatably connected to the base plate. The drive device is drively connected to the telescopic frame to drive the telescopic frame to rotate relative to the main girder and the base plate. The telescopic frame can extend and retract along the height direction of the main girder to move the main girder closer to or away from the base plate. During operation, the telescopic frame is perpendicular to the main girder in the horizontal direction, and the telescopic frame extends, enabling the girder replacement machine to perform girder feeding operations. During transport, the width and height of the girder replacement machine can be reduced by the rotation and shortening of the telescopic frame, allowing the girder replacement machine to pass through areas with height and width restrictions.

Description

Technical Field

[0001] This application relates to the field of bridge beam replacement technology, and in particular to a beam replacement machine. Background Technology

[0002] my country's existing railways use a large number of bridges constructed with interlocking beams. With increasing operational time and railway capacity expansion and renovation, it is necessary to replace the already laid beams. This replacement is typically done using a beam replacement machine. A beam replacement machine usually consists of a main beam and two traveling sections. These traveling sections drive the main beam to move across the road surface. Once the two traveling sections reach the two ends of the area where beams need to be replaced, they lift the existing beams from that area using the main beam, and then hoist the new beams into the area using the main beam, thus completing the beam replacement operation.

[0003] However, large beams are quite large, and the beam replacement machine needs to have a large width and height to lift them onto the main beam. Therefore, sufficient passage width needs to be left when transporting the beam replacement machine. However, when transporting the beam replacement machine over long distances by road, it is unavoidable to pass through areas with height and width restrictions, such as tunnels, highways and viaducts, making it difficult to transport the beam replacement machine over long distances by road. Utility Model Content

[0004] In order to solve the above-mentioned technical problems, or at least partially solve the above-mentioned technical problems, this application provides a beam replacement machine.

[0005] This application provides a beam replacement machine, including a main beam and two traveling sections spaced apart along the longitudinal direction of the main beam;

[0006] The traveling section includes a telescopic frame connected to the bottom side of the main beam, a base plate connected to the bottom side of the telescopic frame, a set of traveling wheels connected to the bottom side of the base plate, and a driving device disposed on the base plate.

[0007] The center of the top of the telescopic frame is rotatably connected to the main beam, and the center of the bottom of the telescopic frame is rotatably connected to the base plate. The driving device is connected to the telescopic frame in a transmission manner to drive the telescopic frame to rotate relative to the main beam and the base plate.

[0008] The telescopic frame can extend and retract along the height of the main beam to move the main beam closer to or away from the base plate.

[0009] Optionally, the driving device includes a motor and a traction rope. The motor is arranged along the longitudinal direction of the main beam on one side of the telescopic frame. One end of the traction rope is connected to the edge of the telescopic frame along the transverse direction of the main beam, and the other end is connected to the output end of the motor. The output end of the motor can rotate to drive the traction rope to rotate the telescopic frame relative to the base plate and the main beam.

[0010] Optionally, there are two motors, which are located on the same side of the telescopic frame along the longitudinal direction of the main beam and on both sides of the main beam along the transverse direction. Both motors are connected to traction ropes, and the two traction ropes are respectively connected to the two transverse edges of the telescopic frame along the main beam, so that the two motors can cooperate to change the rotation direction of the telescopic frame.

[0011] Optionally, there are two motors, which are arranged on both sides of the telescopic frame along the longitudinal direction of the main beam and on one side of the main beam along the transverse direction. Both motors are connected to the traction ropes, and the two traction ropes are respectively connected to the same edge of the telescopic frame along the transverse direction of the main beam, so that the two motors can cooperate to change the rotation direction of the telescopic frame.

[0012] Optionally, the base plate includes a first base frame and a plurality of second base frames;

[0013] The first base frame extends longitudinally along the main beam, and the second base frame is rotatably connected to the bottom side of the first base frame. Multiple second base frames are spaced apart longitudinally along the main beam, and each second base frame is equipped with the set of traveling wheels.

[0014] Optionally, the second base frame includes a support frame and multiple assembly frames, and the running wheel assembly includes multiple wheels and multiple elastic elements;

[0015] The support frame is rotatably connected to the first base frame. Multiple assembly frames are symmetrically connected to both sides of the support frame along the transverse direction of the main beam. Multiple wheels are rotatably connected to each support frame. The multiple wheels are spaced apart along the longitudinal direction of the main beam and are located on the bottom side of the assembly frame. Each wheel is connected to the assembly frame by an elastic element.

[0016] Optionally, when the telescopic frame and the main beam are perpendicular to each other in the horizontal direction, the telescopic frame can extend to drive the main beam to rise to the first position, so that the beam changing machine is in working condition;

[0017] The angle between the telescopic frame and the main beam in the horizontal direction is less than 90°, and when the telescopic frame is inside the two sides of the main beam along the horizontal direction of the base plate, the telescopic frame can shorten to drive the main beam to descend to the second position, so that the beam changing machine is in the transfer state.

[0018] Optionally, the telescopic frame includes an upper crossbeam, a lower crossbeam, and two telescopic columns;

[0019] The middle part of the upper crossbeam is rotatably connected to the main beam, and the middle part of the lower crossbeam is rotatably connected to the bottom plate. The upper crossbeam and the lower crossbeam are arranged opposite to each other and parallel to each other along the height direction of the main beam. The driving device is connected to the lower crossbeam in a transmission manner.

[0020] The telescopic column is connected between the upper crossbeam and the lower crossbeam, and the two telescopic columns are arranged on both sides of the main beam along the transverse direction of the main beam.

[0021] The two telescopic columns can extend and retract synchronously to drive the upper crossbeam and the lower crossbeam closer to or further away from each other.

[0022] Optionally, the telescopic column includes multiple sleeve columns and at least one telescopic cylinder. The multiple sleeve columns are arranged sequentially along the height direction of the main beam, and the sleeve columns located at both ends of the multiple sleeve columns are respectively connected to the upper crossbeam and the lower crossbeam.

[0023] Each pair of adjacent sleeves is movably sleeved, and a telescopic cylinder is connected between each pair of adjacent sleeves. Each telescopic cylinder can drive the corresponding two sleeves to move closer to each other or further away from each other.

[0024] Optionally, the beam replacement machine further includes a controller electrically connected to the drive unit, so that the controller can control the start and stop of the drive unit.

[0025] The technical solution provided in this application has the following advantages compared with the prior art:

[0026] The beam-changing machine provided in this application has a telescopic frame supported between a base plate and a main beam. The telescopic frame can rotate relative to the main beam and the base plate via a pivot extending along the height direction of the main beam. A drive device can drive the telescopic frame to rotate relative to the main beam, adjusting the relative position of the telescopic frame and the main beam, thereby adjusting the overall width of the beam-changing machine. The extension and retraction of the telescopic frame can raise and lower the main beam, thus adjusting the height of the beam-changing machine. During operation, the telescopic frame is perpendicular to the main beam in the horizontal direction, and its extension allows the machine to perform beam feeding operations. During transport, the rotation and retraction of the telescopic frame can reduce the width and height of the beam-changing machine, enabling it to pass through areas with height and width restrictions, thus facilitating long-distance transport via highways. Attached Figure Description

[0027] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0028] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of the beam-changing machine described in the embodiment of this application during the transfer process;

[0030] Figure 2 This is a partial structural diagram of the beam-changing machine described in the embodiments of this application during its transfer state;

[0031] Figure 3 This is a schematic diagram of the beam-changing machine described in the embodiments of this application in its working state;

[0032] Figure 4 This is a partial structural diagram of the beam-changing machine described in the embodiments of this application in its working state;

[0033] Figure 5 This is a side view of the beam-changing machine described in the embodiment of this application during its transfer state;

[0034] Figure 6 This is a partial side view of the beam-changing machine described in the embodiment of this application during transport.

[0035] Among them, 1. Main beam; 11. Crane trolley; 2. Telescopic frame; 21. Upper crossbeam; 22. Lower crossbeam; 23. Telescopic column; 231. Sleeve column; 24. Hinge part; 31. Base plate; 311. First base frame; 312. Second base frame; 313. Support frame; 314. Assembly frame; 32. Traveling wheel set; 321. Wheel body; 322. Elastic element; 4. Drive device; 41. Motor; 42. Traction rope. Detailed Implementation

[0036] To better understand the above-mentioned objectives, features, and advantages of this application, the solution of this application will be further described below. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0037] Many specific details are set forth in the following description in order to provide a full understanding of this application, but this application may also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only some embodiments of this application, and not all embodiments.

[0038] Reference Figures 1 to 6As shown, this application embodiment provides a beam replacement machine, including a main beam 1 and two traveling parts spaced apart along the longitudinal direction of the main beam 1; the traveling parts include a telescopic frame 2 connected to the bottom side of the main beam 1, a base plate 31 connected to the bottom side of the telescopic frame 2, a set of traveling wheels 32 connected to the bottom side of the base plate 31, and a drive device 4 disposed on the base plate 31; the center of the top end of the telescopic frame 2 is rotatably connected to the main beam 1, and the center of the bottom end of the telescopic frame 2 is rotatably connected to the base plate 31; the drive device 4 is drively connected to the telescopic frame 2 to drive the telescopic frame 2 to rotate relative to the main beam 1 and the base plate 31; the telescopic frame 2 can extend and retract along the height direction of the main beam 1 to drive the main beam 1 closer to or away from the base plate 31.

[0039] Firstly, existing beam-changing machines typically have a main beam and two traveling sections. These traveling sections drive the main beam to move on the road surface. The traveling sections are hollow frame structures with wheels at the bottom for movement. When a beam is hoisted onto the main beam, it moves along the main beam, passing through the frame structure of the traveling sections, allowing it to move on the main beam to adjust its position. During beam-changing operations, the two traveling sections move to both ends of the area where the beam needs to be replaced. The beam in that area is then lifted off the main beam, and a new beam is hoisted into that area via the main beam. The beam is then lowered to complete the beam-changing operation. The space in the middle of the frame structure is the feeding space. Since large beams have significant length, width, and height dimensions, the feeding space needs to be large to accommodate them. This means the overall width and height of the frame structure must be large. The frame structure supports the main beam, and its width is greater than the width of the main beam and other components of the beam-changing machine. Therefore, the width of the beam replacement machine depends on the width of the frame structure, and the height of the beam replacement machine depends on the height of the frame structure. However, tunnels and overpasses have height and width restrictions during transportation, and overhead power lines or bridges also restrict the height of passing vehicles. The beam replacement machine has difficulty passing through these places with height and width restrictions, making it difficult for the beam replacement machine to carry out long-distance transportation.

[0040] However, the beam-changing machine provided in this application has a telescopic frame 2 that can extend and rotate between the main beam and the base plate 31. A set of traveling wheels 32 is installed at the bottom of the base plate 31, allowing the traveling wheels 32 to drive the telescopic frame 2 and the main beam 1 to move on the ground. The top and bottom center positions of the telescopic frame 2 are rotatably connected to the main beam 1 and the base plate 31, respectively, allowing the telescopic frame 2 to rotate relative to the main beam 1 and the base plate 31 about a pivot extending along the height direction of the main beam 1. The drive device 4 can drive the telescopic frame 2 to rotate relative to the main beam 1, switching the relative position of the telescopic frame 2 and the main beam 1, thereby adjusting the overall width of the beam-changing machine. When the telescopic frame 2 is perpendicular to the main beam 1 in the horizontal direction, the lateral dimension of the telescopic frame 2 relative to the main beam 1 is the largest. Starting from a position perpendicular to the main beam 1 in the horizontal direction, the telescopic frame 2 will rotate, causing its horizontal edge to move closer to the main beam 1, thus reducing the lateral dimension of the telescopic frame 2 relative to the main beam 1. Therefore, rotating the telescopic frame 2 relative to the main beam 1 can adjust the width of the beam-changing machine. The extension and retraction of the telescopic frame 2 can drive the main beam 1 to rise and fall, thereby adjusting the height of the beam changing machine. The beam changing machine maintains a small width and height during the transfer process by rotating and retracting the telescopic frame 2, enabling the beam changing machine to pass through areas with height and width restrictions and to transfer the beam changing machine by long-distance transportation.

[0041] Specifically, the longitudinal direction of the main beam 1 is its length, the transverse direction is its width, and the height direction is vertical. When the beam-changing machine travels, it moves longitudinally along the main beam 1. After the beam is hoisted onto the main beam 1, the beam slides longitudinally along the main beam 1.

[0042] The aforementioned telescopic frame 2 can be a rectangular frame structure. The center of the top end is rotatably connected to the bottom side of the main beam 1 via a hinge 24, and the center of the bottom end is rotatably connected to the base plate 31 via a hinge 24 or a vertical shaft. The telescopic frame 2 can include an upper crossbeam, a lower crossbeam, and a telescopic structure. The upper and lower crossbeams are parallel to each other and spaced apart along the height direction of the main beam 1, and the lengths of the upper and lower crossbeams are equal. When the beam changing machine is working, the upper crossbeam is perpendicular to the main beam 1 in the horizontal direction. When the beam changing machine is transporting the beam, the angle between the upper crossbeam and the main beam 1 is less than 90° to reduce the distance between the two ends of the upper crossbeam along its length direction in the transverse direction of the main beam 1.

[0043] The upper crossbeam has a hinge 24 at the center of its length direction to be rotatably connected to the main beam 1, and the lower crossbeam has a hinge 24 at the center of its length direction to be rotatably connected to the base plate 31, so that the axis of rotation of the telescopic frame 2 extends along the height direction of the main beam 1, and the telescopic frame 2 can be symmetrical about the axis of rotation in the horizontal direction.

[0044] The telescopic structure is connected between the upper and lower crossbeams. The telescopic structure can be a telescopic cylinder. The telescopic cylinder is set along the height direction of the main beam 1. The telescopic cylinder is connected to the lower crossbeam, and the telescopic end of the telescopic cylinder is connected to the upper crossbeam. The telescopic end of the telescopic cylinder can drive the upper and lower crossbeams to move closer and further apart, so as to shorten and lengthen the telescopic frame 2.

[0045] The telescopic frame 2 is supported between the base plate 31 and the main beam 1. The base plate 31 is supported on the road surface by the traveling wheel set 32. Therefore, when the telescopic frame 2 extends, the main beam 1 will rise, increasing the distance between the main beam 1 and the ground, thereby increasing the overall height of the beam changing machine. When the telescopic frame 2 shortens, the main beam 1 will descend, decreasing the distance between the main beam 1 and the ground, thereby decreasing the overall height of the beam changing machine.

[0046] The aforementioned base plate 31 is a flat plate structure. It can be selected that the base plate 31 is provided with a rotating groove. The bottom center of the telescopic frame 2 is provided with a vertical shaft extending along the height direction of the main beam 1. The vertical shaft is rotatably connected to the base plate 31. The hinge part 24 is arranged opposite to the vertical shaft along the height direction of the main beam 1.

[0047] The aforementioned traveling wheel assembly 32 may include multiple wheels, with two wheels forming one wheel assembly. Multiple wheel assemblies extend longitudinally along the main beam 1, and two wheels in each assembly are spaced laterally along the main beam 1, such that the two wheels in each assembly are positioned on opposite sides of the main beam 1 laterally. The wheels of the traveling wheel assembly may be powered, causing them to rotate and move the base plate 31, telescopic frame 2, and main beam 1 on the ground. Alternatively, the traveling wheel assembly 32 may include a rotary motor, the output of which is connected to the multiple wheels, enabling the rotary motor to drive the multiple wheels to rotate and move the telescopic frame 2 and main beam 1 on the ground.

[0048] The aforementioned drive device 4 can be installed on the top side of the base plate 31. The drive device 4 can be a telescopic cylinder, with its telescopic end arranged along the longitudinal direction of the main beam 1. The telescopic cylinder is rotatably connected to the base plate 31, and its telescopic end is connected to the transverse edge of the telescopic frame 2 along the main beam 1, so that when the telescopic end of the telescopic cylinder extends or retracts, it can apply a horizontal rotational force to the telescopic frame 2. Alternatively, the drive device 4 can be a motor and a traction rope. The motor is located on one side of the telescopic frame 2 along the longitudinal direction of the main beam 1, and one end of the traction rope is connected to one side edge of the telescopic frame 2 along the transverse direction of the main beam 1, while the other end is connected to the output shaft of the motor. The output shaft of the motor rotates and winds the traction rope, thus driving the telescopic frame 2 to rotate horizontally.

[0049] In specific use of this application embodiment, when the beam changing machine is working, the telescopic frame 2 and the main beam 1 are perpendicular to each other in the horizontal direction. The telescopic frame 2 extends so that the main beam 1 can be used to hoist the beam segments.

[0050] During transport, the beam replacement machine is driven by the drive unit 4 to rotate the telescopic frame 2 relative to the main beam 1 in the horizontal direction, so that the angle between the telescopic frame 2 and the main beam 1 in the horizontal direction is less than 90°, thereby reducing the width of the beam replacement machine. The drive unit 4 also drives the telescopic frame 2 to shorten, so that the main beam 1 is closer to the bottom plate 31, thereby reducing the height of the beam replacement machine. The beam replacement machine is then transported by a transport vehicle. Because the width and height of the beam replacement machine are both small, it can pass through areas with height and width restrictions during transport.

[0051] The beam-changing machine provided in this embodiment has a telescopic frame 2 supported between a base plate 31 and a main beam 1. The telescopic frame 2 can rotate relative to the main beam 1 and the base plate 31 about a pivot extending along the height direction of the main beam 1. The drive device 4 can drive the telescopic frame 2 to rotate relative to the main beam 1 to adjust the relative position of the telescopic frame 2 and the main beam 1, thereby adjusting the overall width of the beam-changing machine. The extension and retraction of the telescopic frame 2 can cause the main beam 1 to rise and fall, thereby adjusting the height of the beam-changing machine. When the beam-changing machine is working, the telescopic frame 2 is perpendicular to the main beam 1 in the horizontal direction, and the telescopic frame 2 is extended, enabling the beam-changing machine to perform beam feeding operations. During transport, the width and height of the beam-changing machine can be reduced by the rotation and retraction of the telescopic frame 2, allowing the beam-changing machine to pass through areas with height and width restrictions, enabling the beam-changing machine to be transported long distances by road.

[0052] Reference Figures 1 to 6 As shown, in some embodiments, the drive device 4 includes a motor 41 and a traction rope 42. The motor 41 is arranged along the longitudinal direction of the main beam 1 on one side of the telescopic frame 2. One end of the traction rope 42 is connected to the edge of the telescopic frame 2 along the transverse direction of the main beam 1, and the other end is connected to the output end of the motor 41. The output end of the motor 41 can rotate to drive the traction rope 42 to drive the telescopic frame 2 to rotate relative to the base plate 31 and the main beam 1.

[0053] With this configuration, the telescopic frame 2 can be driven to rotate through the cooperation of the motor 41 and the traction rope 42. The traction rope 42 is flexibly connected to the telescopic frame 2, and the traction rope 42 can adapt to the relative position of the telescopic frame 2 and the motor 41 in real time, simplifying the transmission structure and reducing the cost of the drive device 4.

[0054] Specifically, the motor 41 is fixed longitudinally to one side of the telescopic frame 2 along the main beam 1, and a drum is installed at its output end. One end of the traction rope 42 is fixed to the transverse edge of the telescopic frame 2 along the main beam 1, and the other end is wound around the drum of the motor 41. When the motor 41 rotates, the traction rope 42 is wound up and down to pull the telescopic frame 2. The position of the telescopic frame 2 receiving the force is spaced apart from the axis of rotation of the telescopic frame 2 in the horizontal direction, so that the traction rope 42 can pull the telescopic frame 2 to rotate around the axis of rotation.

[0055] The end of the traction rope 42 can be equipped with a hook, which is attached to the edge of the telescopic frame 2, allowing the traction rope 42 to pull the telescopic frame 2. Alternatively, the traction rope 42 can be tied to the edge of the telescopic frame 2, allowing the traction rope 42 to pull the telescopic frame 2.

[0056] After the beam replacement machine completes the previous beam replacement operation, the telescopic frame 2 and the main beam 1 are perpendicular to each other in the horizontal direction. When it is necessary to transfer the beam replacement machine, the output end of the motor 41 is wound around the traction rope 42 to pull the telescopic frame 2 to rotate, so that the angle between the telescopic frame 2 and the main beam 1 is less than 90°. After the beam replacement machine is transported to the required location, a horizontal force can be applied to the telescopic frame 2 by means of engineering machinery such as cranes or trailers, so that the telescopic frame 2 returns to the position perpendicular to the main beam 1 in the horizontal direction for beam replacement operation.

[0057] Alternatively, when the telescopic frame 2 is perpendicular to the main beam 1, the traction rope 42 is connected to the telescopic frame 2 along one side edge of the main beam 1 in the transverse direction, and the motor 41 pulls the traction rope 42 to make the telescopic frame 2 rotate in one direction; after the transportation is completed, the traction rope 42 is connected to the telescopic frame 2 along the other side edge of the main beam 1 in the transverse direction, and the motor 41 pulls the traction rope 42 to rotate in the other direction, so that the telescopic frame 2 returns to the position perpendicular to the main beam 1 in the horizontal direction.

[0058] Reference Figures 1 to 6 As shown, in some embodiments, there are two motors 41. The two motors 41 are arranged on the same side of the telescopic frame 2 along the longitudinal direction of the main beam 1, and the two motors 41 are respectively arranged on both sides of the main beam 1 along the transverse direction of the main beam 1. Both motors 41 are connected to traction ropes 42. The two traction ropes 42 are respectively connected to the two sides of the telescopic frame 2 along the transverse direction of the main beam 1, so that the two motors 41 cooperate with each other to change the rotation direction of the telescopic frame 2.

[0059] With this configuration, by adjusting the force applied by the two motors 41 to the opposite sides of the telescopic frame 2, the telescopic frame 2 can automatically rotate between the working position and the transfer position, thus improving the degree of automation of the drive device 4 in controlling the rotation of the telescopic frame 2.

[0060] Specifically, the two motors 41 can be set on the same side of the telescopic frame 2 along the longitudinal direction of the main beam 1. The two motors 41 are connected to the two side edges of the telescopic frame 2 through two traction ropes 42 respectively. The length of each traction rope 42 can be longer, so that after one motor 41 starts to wind the traction rope 42, the telescopic frame 2 starts to rotate, and the output end of the other motor 41 releases the traction rope 42 in coordination with the rotation of the telescopic frame 2.

[0061] The two motors 41 can be selected to be defined as the first motor and the second motor, respectively. The first motor is connected to the first traction rope, and the second motor is connected to the second traction rope. When the first motor is started to wind the first traction rope, the output end of the second motor releases the second traction rope, and the telescopic frame 2 rotates horizontally in the first direction. When the second motor is started to wind the second traction rope, the output end of the first motor releases the first traction rope, and the telescopic frame 2 rotates horizontally in the second direction. The first direction and the second direction are opposite, that is, through the cooperation of the two motors 41, the telescopic frame 2 can rotate in both opposite directions.

[0062] The telescopic frame 2 is in the working position when it is perpendicular to the main beam 1 in the horizontal direction, and the telescopic frame 2 is in the transfer position when the angle between it and the main beam 1 in the horizontal direction is less than 90°. Through the cooperation of the two motors 41, the telescopic frame 2 can rotate between the working position and the transfer position.

[0063] Reference Figures 1 to 6 As shown, in some embodiments, there are two motors 41. The two motors 41 are arranged on both sides of the telescopic frame 2 along the longitudinal direction of the main beam 1, and the two motors 41 are respectively arranged on one side of the main beam 1 along the transverse direction of the main beam 1. Both motors 41 are connected to traction ropes 42. The two traction ropes 42 are respectively connected to the same edge of the telescopic frame 2 along the transverse direction of the main beam 1, so that the two motors 41 cooperate with each other to change the rotation direction of the telescopic frame 2.

[0064] With this configuration, by adjusting the force applied by the two motors 41 to the same edge of the telescopic frame 2, the telescopic frame 2 can automatically rotate between the working position and the transfer position, thereby improving the degree of automation of the drive device 4 in controlling the rotation of the telescopic frame 2.

[0065] Specifically, the two motors 41 can be arranged opposite each other in the longitudinal direction of the main beam 1, and the two motors 41 are respectively on both sides of the telescopic frame 2 along the longitudinal direction of the main beam 1. The two traction ropes 42 are connected to one side edge of the telescopic frame 2, so that one side edge of the telescopic frame 2 is stressed. After one motor 41 is started, the other motor 41 can be selected to release the traction rope 42 on it, so that the telescopic frame 2 can rotate in the horizontal direction.

[0066] The two motors 41 can be selected as a first motor and a second motor. The first motor is connected to a first traction rope, and the second motor is connected to a second traction rope. When the first motor is started to wind the first traction rope, the output end of the second motor releases the second traction rope, and the telescopic frame 2 rotates horizontally in the first direction. When the second motor is started to wind the second traction rope, the output end of the first motor releases the first traction rope, and the telescopic frame 2 rotates horizontally in the second direction. The first direction and the second direction are opposite, that is, through the cooperation of the two motors 41, the telescopic frame 2 can rotate in both opposite directions.

[0067] The telescopic frame 2 is in the working position when it is perpendicular to the main beam 1 in the horizontal direction, and the telescopic frame 2 is in the transfer position when the angle between it and the main beam 1 in the horizontal direction is less than 90°. Through the cooperation of the two motors 41, the telescopic frame 2 can rotate between the working position and the transfer position.

[0068] Reference Figure 5 and Figure 6 As shown, in some embodiments, the base plate 31 includes a first base frame 311 and a plurality of second base frames 312; the first base frame 311 extends longitudinally along the main beam 1, the second base frames 312 are rotatably connected to the bottom side of the first base frame 311, the plurality of second base frames 312 are spaced apart longitudinally along the main beam 1, and each second base frame 312 is provided with a set of traveling wheels 32.

[0069] With this configuration, the second base frame 312 can rotate relative to the first base frame 311, thereby adjusting the forward direction of the traveling wheel set 32 ​​and changing the traveling direction of the beam changer. This improves the ease of adjusting the beam changer's position on the ground.

[0070] Specifically, the first base frame 311 is a rectangular panel or a panel of other shapes extending longitudinally along the main beam 1, and the second base frame 312 is a block structure. The second base frame 312 can be rotatably connected to the first base frame 311 via a pivot. Alternatively, the bottom of the first base frame 311 can be provided with two second base frames 312, or the bottom of the first base frame 311 can be provided with multiple second base frames 312.

[0071] The aforementioned second base frame 312 is located in the middle of the first base frame 311 along the transverse direction of the main beam 1. When the traveling wheel set 32 ​​on the second base frame 312 is supported on the ground, the first base frame 311 can maintain its balance.

[0072] Each of the aforementioned secondary base frames 312 is equipped with a set of traveling wheels 32, which together support the secondary base frame 312 on the ground. The secondary base frame 312 rotates relative to the primary base frame 311, thereby changing the forward direction of the traveling wheels 32 and thus changing the direction of travel of the beam changing machine.

[0073] Reference Figure 5 and Figure 6As shown, in some embodiments, the second base frame 312 includes a support frame 313 and a plurality of assembly frames 314, and the running wheel set 32 ​​includes a plurality of wheels 321 and a plurality of elastic elements 322; the support frame 313 is rotatably connected to the first base frame 311, and the plurality of assembly frames 314 are symmetrically connected to both sides of the support frame 313 along the transverse direction of the main beam 1. A plurality of wheels 321 are rotatably connected to each support frame 313, and the plurality of wheels 321 are spaced apart along the longitudinal direction of the main beam 1. The wheels 321 are located on the bottom side of the assembly frame 314, and an elastic element 322 is connected between each wheel 321 and the assembly frame 314.

[0074] With this configuration, the elastic element 322 between the wheel body 321 and the mounting frame 314 can absorb the vibration of the wheel body 321. When the running wheel assembly 32 rolls on the ground, the elastic element 322 buffers the ground impact, reduces the vibration transmitted to the telescopic frame 2, and reduces the impact of vibration on the position of the telescopic frame 2.

[0075] Specifically, two symmetrical assembly frames 314 along the transverse direction of the main beam 1 constitute an assembly group. It is possible to select one assembly group on the support frame 313, or to select two assembly groups on the support frame 313, with the two assembly groups spaced apart along the longitudinal direction of the main beam 1. Alternatively, multiple assembly groups can be selected on the support frame 313 and spaced apart along the longitudinal direction of the main beam 1.

[0076] The aforementioned assembly frame 314 can be extended longitudinally along the main beam 1, and multiple wheels 321 are spaced apart longitudinally along the main beam 1. The assembly frame 314 is located on the top side of the multiple wheels 321, and a support platform is provided on the outer side of the wheel 321 on the rotating shaft. An elastic element 322 is connected between the support platform and the assembly frame 314, so that the vibration energy of the wheel 321 is transmitted to the elastic element 322, thereby reducing the vibration of the wheel 321.

[0077] The aforementioned support frame 313 is provided with multiple wheels 321 on both sides of the main beam 1 in the transverse direction. The wheels 321 on both sides of the support frame 313 in the transverse direction are symmetrical to each other. Each wheel 321 on each side of the support frame 313 is connected to the corresponding side of the assembly frame 314 with an elastic element 322.

[0078] The assembly frame 314 is designed to protrude downward in the middle. Two wheels 321 are respectively provided on both sides of the protrusion of the assembly frame 314. Alternatively, other numbers of wheels 321 can be provided on both sides of the protrusion of the assembly frame 314, and the number of wheels 321 on both sides of the protrusion of the assembly frame 314 is equal.

[0079] Reference Figures 1 to 4As shown, in some embodiments, when the telescopic frame 2 and the main beam 1 are perpendicular to each other in the horizontal direction, the telescopic frame 2 can extend to drive the main beam 1 to rise to the first position, so that the beam changing machine is in working condition; when the angle between the telescopic frame 2 and the main beam 1 in the horizontal direction is less than 90°, and the telescopic frame 2 is inside the two sides of the main beam 1 along the horizontal direction of the base plate 31 along the two sides of the main beam 1, the telescopic frame 2 can shorten to drive the main beam 1 to fall to the second position, so that the beam changing machine is in transport state.

[0080] With this setup, the beam replacement machine operates in working mode to replace beams, ensuring that it can lift the required beam segments. When transferring the beam replacement machine, it is in transfer mode, ensuring that its width and height dimensions are small enough to pass through height and width restricted areas on the highway.

[0081] Specifically, when the beam-changing machine is performing a beam-changing operation, the height between the main beam 1 and the ground must be greater than the height of the beam segment, and the feeding space on the telescopic frame 2 must be greater than the width of the beam segment in the lateral direction of the main beam 1, so that the beam segment can be hoisted onto the main beam 1 and can slide on the main beam 1. When the beam-changing machine is in operation, the telescopic frame 2 is perpendicular to the main beam 1 in the horizontal direction, so that the feeding space in the middle of the telescopic frame 2 reaches its maximum value in the lateral direction of the main beam 1. The telescopic frame 2 can be extended to its maximum value, or the extension distance of the telescopic frame 2 can be selected according to the required height of the beam segment to be hoisted, as long as the vertical distance between the main beam 1 at the first position and the base plate 31 is greater than the height of the beam segment.

[0082] When the beam changing machine is being transported, it needs to pass through areas with restrictions on height and width. When the telescopic frame 2 rotates to the inside of the base plate 31 along the lateral edge of the main beam 1, the lateral dimension of the base plate 31 along the main beam 1 is the maximum width dimension of the beam changing machine. At this time, the telescopic frame 2 can be shortened to the minimum value, or the telescopic frame 2 can be shortened to a set length to prevent the hoisting trolley or other parts on the main beam 1 from contacting the ground or the base plate 31.

[0083] Reference Figures 1 to 4 As shown, in some embodiments, the telescopic frame 2 includes an upper crossbeam 21, a lower crossbeam 22, and two telescopic columns 23; the middle part of the upper crossbeam 21 is rotatably connected to the main beam 1, and the middle part of the lower crossbeam 22 is rotatably connected to the base plate 31. The upper crossbeam 21 and the lower crossbeam 22 are arranged opposite to each other and parallel to each other along the height direction of the main beam 1. The driving device 4 is connected to the lower crossbeam 22 in a transmission manner. The telescopic columns 23 are connected between the upper crossbeam 21 and the lower crossbeam 22. The two telescopic columns 23 are arranged on both sides of the main beam 1 in the transverse direction. The two telescopic columns 23 can extend and retract synchronously to drive the upper crossbeam 21 and the lower crossbeam 22 to move closer to each other or further away from each other.

[0084] This configuration allows for adjustment of the distance between the upper crossbeam 21 and the lower crossbeam 22 via two telescopic columns 23, enabling the telescopic frame 2 to extend and shorten. The two telescopic columns 23 are located on both sides of the main beam 1, ensuring that the columns do not obstruct the movement of the beam segments when they are hoisted onto the main beam 1.

[0085] Specifically, the upper crossbeam 21 and the lower crossbeam 22 are of equal length and parallel to each other. Two telescopic columns 23 are connected between the upper crossbeam 21 and the lower crossbeam 22. The upper crossbeam 21, the lower crossbeam 22 and the two telescopic columns 23 form a feeding space. The upper crossbeam 21 is set on the top side of the main beam 1 so that the main beam 1 can pass through the feeding space.

[0086] The aforementioned telescopic column 23 may include multiple telescopic sections arranged sequentially along the height direction of the main beam 1. Each pair of adjacent telescopic sections is nested together, and each pair of adjacent telescopic sections is connected by a telescopic cylinder or a telescopic motor. When the telescopic cylinder or the telescopic motor extends or retracts, it can drive the corresponding two telescopic sections to move away from each other and closer to each other, so that the telescopic column 23 extends and retracts.

[0087] Alternatively, the telescopic column 23 can be a telescopic cylinder or a telescopic hydraulic cylinder, etc., with a telescopic end that can extend and shorten. The drive structure and the telescopic end are set along the height direction of the main beam 1. The drive structure is connected to the upper crossbeam 21, and the telescopic end is connected to the lower crossbeam 22. Alternatively, the drive structure can be connected to the lower crossbeam 22, and the telescopic end can be connected to the upper crossbeam 21.

[0088] Reference Figures 1 to 4 As shown, in some embodiments, the telescopic column 23 includes multiple sleeve columns 231 and at least one telescopic cylinder. The multiple sleeve columns 231 are arranged sequentially along the height direction of the main beam 1. The sleeve columns 231 located at both ends of the multiple sleeve columns 231 are respectively connected to the upper crossbeam 21 and the lower crossbeam 22.

[0089] Each pair of adjacent sleeves 231 are movably connected, and a telescopic cylinder is connected between each pair of adjacent sleeves 231. Each telescopic cylinder can drive the corresponding two sleeves 231 to move closer to each other or further away from each other.

[0090] With this configuration, the multi-level column 231 structure can increase the telescopic range of the telescopic frame 2, giving the telescopic frame 2 the ability to adjust its height over a wide range.

[0091] Specifically, along the height direction of the main beam 1, the diameter of the sleeve column 231 increases or decreases sequentially so that two adjacent sleeve columns 231 can be movably connected. The telescopic cylinder can be a telescopic hydraulic cylinder or a telescopic air cylinder. The telescopic hydraulic cylinder can be set inside the sleeve column 231, or it can be set outside the sleeve column 231.

[0092] The number of sleeve posts 231 can be selected as three. Adjacent sleeve posts 231 are connected by telescopic hydraulic cylinders. When the telescopic hydraulic cylinders are activated, multiple sleeve posts 231 extend or retract in stages to achieve precise adjustment of the frame height. Of course, the number of sleeve posts 231 can also be selected as two or other numbers.

[0093] In some embodiments, the beam replacement machine further includes a controller electrically connected to the drive unit 4 so that the controller can control the start and stop of the drive unit 4.

[0094] With this configuration, the relative position of the telescopic frame 2 and the main beam 1 can be controlled by the controller and the drive device 4, which facilitates the switching of the beam replacement machine between working and transport states, and improves the automation and intelligence of the beam replacement machine.

[0095] Specifically, the controller can be a chip or a computer. The controller controls the position of the telescopic frame 2 relative to the main beam 1 by controlling the start and stop of the drive device 4. When the telescopic frame 2 includes telescopic columns 23 formed by multiple sleeve columns 231, the controller can be electrically connected to all the telescopic cylinders, so that the controller can also control the start and stop of all the telescopic cylinders, thereby enabling the controller to control the extension and shortening of the telescopic frame 2. The controller can coordinate the rotation and extension of the telescopic frame 2, so that the beam changing machine can automatically switch between working state and transport state.

[0096] The controller controls the start and stop of the drive unit 4 and coordinates the rotation and extension of the telescopic frame 2 to switch the beam changing machine between working and transport states.

[0097] In specific use, the beam replacement machine provided in this application embodiment operates as follows: when the beam replacement machine is performing a beam replacement operation, the two motors 41 cooperate to rotate the telescopic frame 2 to a position perpendicular to the main beam 1 in the horizontal direction. The multiple sleeves 231 move away from each other, causing the telescopic frame 2 to extend and drive the main beam 1 to the first position. The first base frame 311, the second base frame 312, and the multiple wheels 321 cooperate to move the beam replacement machine to the area where the beam needs to be replaced. The two traveling parts are at both ends of the main beam 1 in the longitudinal direction of the area where the beam needs to be replaced, moving the old beam in the area out of the area on the main beam 1, and hoisting the new beam onto the main beam 1 to place it in the area, thus completing the beam replacement operation.

[0098] When the beam-changing machine needs to be transferred, the controller controls two motors 41 to cooperate with each other, so that the telescopic frame 2 rotates to a position where the angle between the telescopic frame 2 and the main beam 1 in the horizontal direction is less than 90°, and both ends of the telescopic frame 2 along the transverse direction of the main beam 1 are inside the first base frame 311; the controller retracts multiple telescopic cylinders, so that multiple sleeve columns 231 move closer to each other, and the upper crossbeam 21 and the lower crossbeam 22 move closer to each other, so that the main beam 1 is in the second position, and the beam-changing machine in the transfer state is placed on a transport vehicle and transferred by road.

[0099] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0100] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments described herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A beam changer, characterized by It includes a main beam (1) and two traveling sections spaced apart along the longitudinal direction of the main beam (1); The traveling section includes a telescopic frame (2) connected to the bottom side of the main beam (1), a base plate (31) connected to the bottom side of the telescopic frame (2), a traveling wheel set (32) connected to the bottom side of the base plate (31), and a driving device (4) disposed on the base plate (31); The center of the top of the telescopic frame (2) is rotatably connected to the main beam (1), the center of the bottom of the telescopic frame (2) is rotatably connected to the base plate (31), and the driving device (4) is connected to the telescopic frame (2) in a transmission manner to drive the telescopic frame (2) to rotate relative to the main beam (1) and the base plate (31). The telescopic frame (2) can extend and retract along the height direction of the main beam (1) to move the main beam (1) closer to or away from the base plate (31).

2. The beam replacement machine of claim 1, wherein, The driving device (4) includes a motor (41) and a traction rope (42). The motor (41) is arranged along the longitudinal direction of the main beam (1) on one side of the telescopic frame (2). One end of the traction rope (42) is connected to the telescopic frame (2) along the transverse edge of the main beam (1), and the other end is connected to the output end of the motor (41). The output end of the motor (41) can rotate to drive the traction rope (42) to drive the telescopic frame (2) to rotate relative to the base plate (31) and the main beam (1).

3. The beam replacement machine of claim 2, wherein, There are two motors (41). The two motors (41) are located on the same side of the telescopic frame (2) along the longitudinal direction of the main beam (1). The two motors (41) are located on both sides of the main beam (1) along the transverse direction. Both motors (41) are connected to the traction ropes (42). The two traction ropes (42) are connected to the two sides of the telescopic frame (2) along the transverse direction of the main beam (1) so that the two motors (41) can cooperate with each other to change the rotation direction of the telescopic frame (2).

4. The beam replacement machine of claim 2, wherein, The number of motors (41) is two. The two motors (41) are arranged on both sides of the telescopic frame (2) along the longitudinal direction of the main beam (1). The two motors (41) are respectively arranged on one side of the main beam (1) along the transverse direction of the main beam (1). Both motors (41) are connected to the traction ropes (42). The two traction ropes (42) are respectively connected to the same edge of the telescopic frame (2) along the transverse direction of the main beam (1) so that the two motors (41) can cooperate with each other to change the rotation direction of the telescopic frame (2).

5. The beam replacement machine of claim 1, wherein, The base plate (31) includes a first base frame (311) and a plurality of second base frames (312); The first base frame (311) extends longitudinally along the main beam (1), and the second base frame (312) is rotatably connected to the bottom side of the first base frame (311). A plurality of second base frames (312) are arranged at intervals along the longitudinal direction of the main beam (1), and each second base frame (312) is provided with the traveling wheel set (32).

6. The beam replacement machine of claim 5, wherein, The second base frame (312) includes a support frame (313) and multiple assembly frames (314), and the running wheel set (32) includes multiple wheel bodies (321) and multiple elastic elements (322); The support frame (313) is rotatably connected to the first base frame (311). A plurality of assembly frames (314) are symmetrically connected to the support frame (313) on both sides of the main beam (1) in the transverse direction. A plurality of wheels (321) are rotatably connected to each support frame (313). The plurality of wheels (321) are spaced apart in the longitudinal direction of the main beam (1), and the wheels (321) are located on the bottom side of the assembly frame (314). An elastic element (322) is connected between each wheel (321) and the assembly frame (314).

7. The beam replacement machine of claim 1, wherein, When the telescopic frame (2) and the main beam (1) are perpendicular to each other in the horizontal direction, the telescopic frame (2) can extend to drive the main beam (1) to rise to the first position so that the beam changing machine is in working condition; The angle between the telescopic frame (2) and the main beam (1) in the horizontal direction is less than 90°, and when the telescopic frame (2) is inside the bottom plate (31) along the horizontal side edges of the main beam (1) on both sides of the main beam (1), the telescopic frame (2) can shorten to drive the main beam (1) to descend to the second position so that the beam changing machine is in the transfer state.

8. The beam replacement machine of claim 1, wherein, The telescopic frame (2) includes an upper crossbeam (21), a lower crossbeam (22), and two telescopic columns (23); The middle part of the upper crossbeam (21) is rotatably connected to the main beam (1), the middle part of the lower crossbeam (22) is rotatably connected to the bottom plate (31), the upper crossbeam (21) and the lower crossbeam (22) are arranged opposite to each other along the height direction of the main beam (1) and are parallel to each other, and the driving device (4) is connected to the lower crossbeam (22) in a transmission. The telescopic column (23) is connected between the upper crossbeam (21) and the lower crossbeam (22), and the two telescopic columns (23) are arranged on both sides of the main beam (1) along the transverse direction of the main beam (1); The two telescopic columns (23) can extend and retract synchronously to drive the upper crossbeam (21) and the lower crossbeam (22) to move closer to or further away from each other.

9. The beam replacement machine of claim 8, wherein, The telescopic column (23) includes multiple sleeve columns (231) and at least one telescopic cylinder. The multiple sleeve columns (231) are arranged sequentially along the height direction of the main beam (1). The sleeve columns (231) located at both ends of the multiple sleeve columns (231) are respectively connected to the upper crossbeam (21) and the lower crossbeam (22). Each pair of adjacent sleeves (231) are movably sleeved together, and a telescopic cylinder is connected between each pair of adjacent sleeves (231). Each telescopic cylinder can drive the corresponding two sleeves (231) to move closer to each other or further away from each other.

10. The beam replacement machine of claim 1, wherein, The beam replacement machine also includes a controller, which is electrically connected to the drive device (4) so ​​that the controller can control the start and stop of the drive device (4).

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