Equipment and construction method for beam replacement, lifting and longitudinal and transverse movement of railway box-type rigid frame bridge

Abstract

The present invention discloses a beam replacement, jacking, longitudinal and transverse movement equipment and a construction method for a railway box-type rigid frame bridge, which belongs to the technical field of railway bridge construction. Among them, the construction method adopts rail transportation of beams, including the following steps: separating the beams, setting beam replacement, jacking, longitudinal and transverse movement equipment, contacting the beams, jacking the beams, stopping the lifting of the beams, connecting the rails, longitudinal movement of the beams, lifting the railcar, rotating the railcar track wheels, laying temporary ferry tracks, railcar derailing, transverse movement of the beams, lifting the railcar, returning the railcar track wheels to their original positions, derailing the railcar again, removing the beams, and installing new beams; there is no need to perform on-site cutting on the beams that need to be replaced, and the operation cycle is short. The beam replacement, jacking, longitudinal and transverse movement equipment of the present invention includes a rail beam, a lifting mechanism and a railcar; it has the functions of longitudinal and transverse movement, and can safely and efficiently realize the jacking, longitudinal movement and transverse movement of the beams in a narrow space, greatly reducing the interference with the existing lines and the road under the bridge.

Description

Technical Field

[0001] The invention relates to beam replacement, jacking, longitudinal and transverse movement equipment and a construction method for a railway box-type rigid frame bridge, belonging to the technical field of railway bridge construction. Background Art

[0002] Railway bridges are structures built to allow railways to cross municipal roads, rivers, canyons, and other obstacles. Railway bridges are categorized by structure as rigid frame bridges, beam bridges, arch bridges, suspension bridges, cable-stayed bridges, and composite bridges. A rigid frame bridge is one in which the span structure is integrated with pier-type abutments. Based on their appearance, rigid frame bridges can be categorized as box-type rigid frame bridges, portal-type rigid frame bridges, and slanted-leg rigid frame bridges. Because box-type rigid frame bridges have an integrated beam span, legs, and baseplate, they offer excellent rigidity and are widely used in railway construction spanning municipal roads and rivers. In particular, box-type rigid frame bridges are often used in urban railway construction to span urban roads.

[0003] Although the beams of railway steel girder bridges have a long service life, they still present many safety hazards after years of use and need to be replaced. The common practice for replacing railway steel girder bridges is to cut the old railway steel girder bridge into blocks that can be hoisted on site. The cut blocks are then transported away with the assistance of a crane. Although this method has low technical requirements, the degree of mechanization in construction is low, the demand for workers is large, and manual operation poses numerous safety hazards. In addition, the construction efficiency is low, the operation period is long, the construction cost is high, it is prone to environmental pollution, and it requires a long period of municipal road use, resulting in huge social costs. Summary of the Invention

[0004] The purpose of the present invention is to overcome the technical problem of long operation period of existing replacement method of railway steel beam bridge, and to provide a beam replacement, jacking and longitudinal and transverse movement equipment and construction method for railway box-type rigid frame bridge with short operation period.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] Railway box-type rigid frame bridge beam replacement, lifting and longitudinal and transverse movement equipment, including rail wheels, lifting mechanism and rail car;

[0007] The track beam comprises a frame and a longitudinal arm track; the longitudinal arm track is arranged above the frame along the length direction of the beam body to be replaced and is statically connected to the frame; the longitudinal arm track comprises a first longitudinal arm track and a second longitudinal arm track, the first longitudinal arm track is parallel to the second longitudinal arm track, and the distance between the first longitudinal arm track and the second longitudinal arm track is equal to the track gauge of the existing track of the railway box-type rigid frame bridge;

[0008] The lifting mechanism includes a telescopic sleeve and a hydraulic cylinder; the telescopic sleeve is located below the frame and is telescopically movable, with the top end of the telescopic sleeve connected to the frame; the hydraulic cylinder is located below the frame and is driven up and down, with the top end of the hydraulic cylinder connected to the frame;

[0009] A rail vehicle comprises a transport frame, a rail wheel device, a rail wheel and a motor; the rail wheel device is arranged below the transport frame and is horizontally rotatably connected to the transport frame, the rail wheel device is installed with the rail wheel, the rail wheel is placed in the longitudinal arm track and can travel along the longitudinal arm track, and the motor drives the rail wheel.

[0010] According to some embodiments disclosed in the present invention, the frame includes a first cross arm and a second cross arm; the first cross arm and the second cross arm are parallel; one end of the longitudinal arm track is statically connected to the first cross arm, and the other end of the longitudinal arm track is statically connected to the second cross arm.

[0011] According to some embodiments disclosed in the present invention, the lifting mechanism further includes a base; the base is connected to the bottom end of the telescopic sleeve and the bottom end of the hydraulic cylinder.

[0012] According to some embodiments disclosed in the present invention, the telescopic sleeve includes an outer cylinder arm and an inner cylinder that are sleeved together, the outer cylinder arm is vertically fixedly connected to the base, and the inner cylinder is vertically fixedly connected to the frame.

[0013] According to some embodiments disclosed in the present invention, the hydraulic cylinder is hinged to the frame and the base.

[0014] According to some embodiments disclosed in the present invention, the telescopic sleeve is provided with a pin hole and is equipped with a pin.

[0015] According to some embodiments disclosed herein, the rail wheel device is connected to the carrier frame via a rotating pair.

[0016] According to some embodiments disclosed in the present invention, there are four lifting mechanisms, and each lifting mechanism includes two telescopic sleeves and one hydraulic cylinder.

[0017] The construction method of a railway box-type rigid frame bridge adopts any of the above-mentioned beam replacement, jacking, longitudinal and transverse movement equipment and comprises the following steps:

[0018] S1, laying a ferry track and a desired longitudinal track for transporting the beam to be replaced, wherein the ferry track is connected between the existing track and the desired longitudinal track, and the distance between the ferry track and the beam to be replaced is greater than or equal to the length of the beam to be replaced;

[0019] S2, disconnecting the beam of the railway box-type rigid frame bridge that needs to be replaced from other connections of the railway box-type rigid frame bridge;

[0020] S3, installing a beam replacement lifting and transverse movement device below the beam to be replaced, wherein the longitudinal arm track of the track beam of the beam replacement lifting and transverse movement device is arranged in the longitudinal direction of the beam to be replaced, and the projection of the longitudinal arm track on the plane where the existing track of the railway box-type rigid frame bridge is located is connected to the existing track;

[0021] S4, lifting the lifting mechanism of the beam replacement lifting and longitudinal and transverse movement equipment so that the carrying frame of the rail vehicle of the beam replacement lifting and longitudinal and transverse movement equipment contacts the bottom surface of the beam body to be replaced;

[0022] S5, lifting the lifting mechanism, and stopping the lifting when the longitudinal arm track is at the same height as the existing track;

[0023] S6, temporarily rigidly fixing the longitudinal arm track to the existing track to achieve communication between the longitudinal arm track and the existing track;

[0024] S71, starting the railcar to move the railcar carrying the beam to be replaced along the existing track to the ferry track;

[0025] S72, stopping and lifting the railcar, rotating the rail wheel device of the railcar so that the rail wheels of the railcar can move along the ferry track, and then lowering the railcar so that the rail wheels are located within the ferry track;

[0026] S73, landing and starting the railcar to move transversely along the ferry track to the expected longitudinal track;

[0027] S74, stopping and raising the rail car, rotating the rail wheel device so that the rail wheels can move along the expected longitudinal track, and then lowering the rail car so that the rail wheels are located within the expected longitudinal track;

[0028] S75, landing and starting the railcar to move to the target position along the expected longitudinal track;

[0029] S8, unloading the beam to be replaced; and installing the new beam onto the rail car;

[0030] S9, installing the new beam body; the installation step of the new beam body is the reverse process of steps S2-S75.

[0031] If the lifting distance of the beam to be replaced exceeds the maximum stroke of the hydraulic cylinder of the lifting mechanism, construction needs to be suspended, and then the lifting mechanism must be temporarily fixed, the lower hinge point of the hydraulic cylinder must be released, the hydraulic cylinder must be retracted, and the lower hinge point of the hydraulic cylinder must be used as the appropriate position of the lifting mechanism. Finally, the temporary rigid connection of the lifting mechanism must be released, allowing the lifting mechanism to continue working and obtain additional lifting stroke.

[0032] The beneficial effects of the present invention are:

[0033] The construction method of the railway box-type rigid frame bridge disclosed in the present invention is to transport the beam body that needs to be replaced by the longitudinal arm track of the beam replacement jacking and longitudinal and transverse movement equipment and the existing track. Compared with the method of transporting the beam body by crane, the track can transport the beam body that needs to be replaced in its entirety without the need to cut the beam body that needs to be replaced on site; therefore, the construction method of the present invention has a short on-site operation period, which solves the problems of low construction efficiency and long operation period in the existing railway box-type rigid frame bridge beam replacement construction, and can effectively reduce construction and social costs. In addition, not cutting the beam body that needs to be replaced not only avoids environmental pollution caused by construction, but the replaced beam body can be collected and displayed, which is beneficial to the protection of industrial relics and can protect the integrity of those railway bridges with a history of nearly a hundred years, and has important social value.

[0034] The construction method of the present invention allows the beam to be replaced to run autonomously along the track under the support of the rail vehicle, thus realizing the mechanized beam replacement operation of the railway box-type rigid frame bridge. It not only reduces the manpower input and indirectly improves the safety factor of the project construction, but also solves the problems of low construction efficiency and long operation period in the existing railway box-type rigid frame bridge beam replacement construction. The construction practice of the Jiaoji Passenger Dedicated Line Coastal Road Bridge shows that compared with the traditional support method of layer-by-layer jacking-up beam replacement construction, this method and device improves the work efficiency by nearly 1 times, effectively reducing construction and social costs.

[0035] The beam replacement jacking and longitudinal and transverse movement equipment of the present invention has the integrated functions of longitudinal and transverse movement. It can safely and efficiently realize the jacking, longitudinal and transverse movement of the beam body in a small space, greatly reducing the interference with existing lines and driving roads under the bridge. It is particularly suitable for the beam replacement construction of small-span railway box-type rigid frame bridges in urban sections. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 This is one of the structural schematic diagrams of a beam replacement, jacking, longitudinal and transverse movement equipment for a railway box-type rigid frame bridge disclosed in the present invention;

[0037] Figure 2 This is the second structural schematic diagram of a beam replacement, jacking, longitudinal and transverse movement equipment for a railway box-type rigid frame bridge disclosed in the present invention;

[0038] Figure 3This is the third structural schematic diagram of a beam replacement, jacking, longitudinal and transverse movement equipment for a railway box-type rigid frame bridge disclosed in the present invention;

[0039] Figure 4 for Figure 2 Enlarged view of point A in the middle;

[0040] Figure 5 for Figure 3 Enlarged view of point B in the middle;

[0041] Among them, 1. transverse arm, 2. rail car, 3. longitudinal arm track, 4. first transverse arm, 5. second transverse arm, 6. first longitudinal arm track, 7. second longitudinal arm track, 8. lifting mechanism, 9. base, 10. telescopic sleeve, 11. hydraulic cylinder, 12. outer cylinder arm, 13. inner cylinder, 14. first lifting mechanism, 15. second lifting mechanism, 16. third lifting mechanism, 17. fourth lifting mechanism, 18. latch hole, 19. latch, 20. crossbeam, 21. reaming hole, 22. shipping frame, 23. track wheel device, 24. track wheel, 25. motor, 26. first hinge point, 27. second hinge point, 28. rotating pair, 29. beam body, 30. existing track. DETAILED DESCRIPTION

[0042] The present invention will be further described below with reference to the accompanying drawings and examples.

[0043] The structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for understanding and reading by those familiar with this technology. They are not used to limit the conditions for implementation of the present invention and therefore have no substantial technical significance. Any modification of the structure, change in the proportional relationship, or adjustment of the size should still fall within the scope of the technical content disclosed by the present invention without affecting the efficacy and purpose of the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description and are not used to limit the scope of implementation of the present invention. Changes or adjustments in their relative relationships should also be regarded as the scope of implementation of the present invention without substantially changing the technical content.

[0044] In the following embodiments, the longitudinal direction of the beam to be replaced is defined as the longitudinal direction and the front and rear directions.

[0045] The beam replacement, jacking and longitudinal and transverse movement equipment of the railway box-type rigid frame bridge, as shown in the figure, includes: a track beam, a lifting mechanism 8 and a rail car 2; wherein the lifting mechanism 8 is located below the track beam, and the rail car 2 is located above the track beam.

[0046] Railcar 2 is used to transport the beam 29 that needs to be replaced. It should be able to travel along existing tracks 30. Railcar 2 includes a carrier frame 22, a track wheel assembly 23, track wheels 24, and a motor 25. The track wheel assembly 23 is disposed below the carrier frame 22 and is horizontally rotatably connected to the carrier frame 22. The track wheels 24 are mounted on the track wheel assembly 23. The motor 25 is electrically connected to the track wheels 24 and drives the track wheels 24. The motor 25 can be mounted on the bottom surface of the carrier frame 22.

[0047] The number of rail wheel devices 23 can be four groups, of which two groups of rail wheel devices 23 are arranged at the front end of the carrying frame 22 and are arranged side by side, and the other two groups of rail wheel devices 23 are arranged at the rear end of the carrying frame 22 and are arranged side by side; accordingly, the number of rail wheels 24 can be four groups, of which each group of rail wheel devices 23 is installed with a group of rail wheels 24; wherein the distance between the two groups of rail wheels 24 located at the front end of the carrying frame 22 is equal to the gauge of the existing track 30 of the railway box-type rigid frame bridge, and the distance between the two groups of rail wheels 24 located at the rear end of the carrying frame 22 is equal to the gauge of the existing track 30 of the railway box-type rigid frame bridge, so that the rail wheels 24 can run along the existing track 30.

[0048] The rail wheel assembly 23 is rotatably connected to the carrier frame 22, and the rail wheel assembly 23 rotates horizontally about its connection point. The rail wheel assembly 23 and the carrier frame 22 may be connected via a revolving joint 28. The direction of motion of the rail wheel 24 remains constant relative to that of the rail wheel assembly 23. When the rail wheel assembly 23 rotates horizontally, the direction of motion of the rail wheel 24 also rotates, thereby changing the direction of motion of the rail wheel 24.

[0049] The track beam is located below the railcar 2 and provides a running track for the railcar 2 located above it. The track beam includes a frame and a longitudinal arm track 3. The longitudinal arm track 3 is arranged above the frame and statically connected to the frame. The longitudinal arm track 3 is arranged along the length of the beam 29 to be replaced. The longitudinal arm track 3 includes a first longitudinal arm track 6 and a second longitudinal arm track 7, which are parallel to the second longitudinal arm track 7. The distance between the first longitudinal arm track 6 and the second longitudinal arm track 7 is equal to the gauge of the existing track 30 of the railway box-type rigid frame bridge, so that the track wheels 24 of the railcar 2 located above it can be placed within the longitudinal arm track 3 and can travel along the longitudinal arm track 3.

[0050] One specific structure of the frame may include a first cross arm 4 and a second cross arm 5; the first cross arm 4 and the second cross arm 5 are parallel; one end of the longitudinal arm track 3 is statically connected to the first cross arm 4, and the other end of the longitudinal arm track 3 is statically connected to the second cross arm 5. Specifically, the first cross arm 4 and the second cross arm 5 can both be perpendicular to the longitudinal arm track 3.

[0051] The lifting mechanism 8 is used to lift the rail beam and rail car 2 located above it, and includes a telescopic sleeve 10 and a hydraulic cylinder 11. The telescopic sleeve 10 is vertically arranged below the frame and is telescopically extended and retracted up and down, and the top end of the telescopic sleeve 10 is connected to the frame. The hydraulic cylinder 11 is vertically arranged below the frame and is driven up and down, and the top end of the hydraulic cylinder 11 is connected to the frame. Specifically, the top end of the telescopic sleeve 10 and the frame are statically connected, for example, a detachable connection or a fixed connection; the top end of the hydraulic cylinder 11 and the frame are hingedly connected. The number of lifting mechanisms 8 can be four, and each lifting mechanism 8 can include two telescopic sleeves 10 and one hydraulic cylinder 11.

[0052] Lifting mechanism 8 may further include a base 9. Base 9 is connected to the bottom end of telescopic sleeve 10 and the bottom end of hydraulic cylinder 11. The base 9 and the bottom end of telescopic sleeve 10 are statically connected, for example, detachably or fixedly. The base 9 and the bottom end of hydraulic cylinder 11 are hingedly connected. Base 9 is disposed horizontally on the ground.

[0053] The telescopic sleeve 10 can adopt an existing structure. Specifically, the telescopic sleeve 10 can include an outer arm 12 and an inner sleeve 13, which are sleeved together. The inner sleeve 13 is sleeved within the outer arm 12. The bottom end of the outer arm 12 is vertically fixedly connected to the base 9, and the top end of the inner sleeve 13 is vertically fixedly connected to the frame. To enable the telescopic sleeve 10 to provide temporary support, the telescopic sleeve 10 is also provided with a latch hole 18 and a latch 19. Specifically, each of the outer arm 12 and the inner sleeve 13 is provided with multiple latch holes 18, and the multiple latch holes 18 on the outer arm 12 and the inner sleeve 13 are distributed along the same vertical line. When the latch holes 18 on the outer arm 12 coincide with the latch holes 18 on the inner sleeve 13, the latch 19 is inserted, achieving a temporary fixed connection between the outer arm 12 and the inner sleeve 13, thereby providing temporary support.

[0054] Example 1

[0055] A beam replacement, lifting and longitudinal and transverse movement equipment for a railway box-type rigid frame bridge, as shown in the figure, includes a track beam for setting a longitudinal track, a lifting mechanism 8 for lifting the beam body 29, and a rail vehicle 2 for transporting the beam body 29.

[0056] like Figure 1 、 Figure 2 、 Figure 3As shown, the track beam includes a transverse arm 1 and a longitudinal arm track 3 for the operation of the rail car 2; the transverse arm 1 includes a first transverse arm 4 and a second transverse arm 5, and the first transverse arm 4 is arranged in parallel with the second transverse arm 5; the longitudinal arm track 3 includes a first longitudinal arm track 6 and a second longitudinal arm track 7, and the first longitudinal arm track 6 is arranged in parallel with the second longitudinal arm track 7, and the distance between the first longitudinal arm track 6 and the second longitudinal arm track 77 is equal to the gauge of the existing track 30 of the railway box-type rigid frame bridge; one end of the longitudinal arm track 3 is fixedly mounted on the first transverse arm 4, and the other end is fixedly mounted on the second transverse arm 5; the rail car 2 can move longitudinally on the longitudinal arm track 3.

[0057] like Figure 1 、 Figure 2 、 Figure 4 As shown, the lifting mechanism 8 includes a base 9, a telescopic sleeve 10, a hydraulic cylinder 11 and a motor 25; the base 9 is horizontally arranged on the ground, the outer cylinder arm 12 of the telescopic sleeve 10 is vertically fixedly installed on the base 9, the inner cylinder 13 of the telescopic sleeve 10 is fixedly connected to the cross arm 1 of the track beam, one end of the hydraulic cylinder 11 is connected to the base 9 through a first hinge 26, and the other end is connected to the cross arm 1 of the track beam through a second hinge 27; under the telescopic drive of the hydraulic cylinder 11, the cross arm 1 can realize controllable lifting movement relative to the base 9; there are four lifting mechanisms 8, specifically including a first lifting mechanism 14, a second lifting mechanism 15, a third lifting mechanism 16, and a fourth lifting mechanism 17, and each lifting mechanism 8 includes two telescopic sleeves 10 and a hydraulic cylinder 11. As shown Figure 1 、 Figure 2 As shown, one end of the first cross arm 4 is fixedly mounted on the top of the first lifting mechanism 14, and the other end is fixedly mounted on the top of the second lifting mechanism 15; one end of the second cross arm 5 is fixedly mounted on the top of the third lifting mechanism 16, and the other end is fixedly mounted on the top of the fourth lifting mechanism 17.

[0058] like Figure 2 、 Figure 4 As shown, a latch hole 18 is provided on the telescopic sleeve 10 and is equipped with a latch 19 ; the lifting mechanism 8 is temporarily fixedly connected through the latch hole 18 and the latch 19 on the telescopic sleeve 10 .

[0059] like Figure 2 、 Figure 4 As shown, a crossbeam 20 is provided on the outer cylinder arm 12 of the telescopic sleeve 10 , and a reaming hole 21 is provided on the crossbeam 20 , which is used as a lower hinge point for the hydraulic cylinder 11 of the secondary installation lifting mechanism 8 .

[0060] like Figure 1 、 Figure 3 、 Figure 5As shown, the rail vehicle 2 includes two carrying frames 22 for carrying beam bodies 29, and four sets of rail wheel devices 23 that can realize the rotation of rail wheels 24. Two sets of rail wheel devices 23 are installed under each carrying frame 22 through a rotating pair 28. The rail wheel devices 23 can realize the rotation of the rail wheels 24 relative to the carrying frame 22 through the rotating pair 28. The rail wheels 24 in the rail wheel devices 23 are all driving wheels and all adopt electric transmission. Driven by the motor 25, the carrying frame 22 can carry the beam body 29 and travel along the longitudinal arm track 3 or the existing track 30.

[0061] The construction method of a railway box-type rigid frame bridge adopts the above-mentioned beam replacement, jacking and longitudinal and transverse movement equipment of the railway box-type rigid frame bridge and comprises the following steps:

[0062] S1. Lay a ferry track and a desired longitudinal track for transporting the beam 29 to be replaced. The ferry track is connected between the existing track 30 and the desired longitudinal track. The distance between the ferry track and the beam 29 to be replaced is greater than or equal to the length of the beam 29 to be replaced. Typically, the ferry track is perpendicular to the existing track 30, and the desired longitudinal track is parallel to the existing track 30. The number of tracks on the ferry track is consistent with the number of installed beam-changing lifting and transverse moving equipment in the longitudinal direction. For example, if two beam-changing lifting and transverse moving equipment are installed, each having two sets of track wheels 24 arranged side by side at the front and rear ends, then the number of tracks on the ferry track is four.

[0063] S2, disconnecting the beam 29 of the railway box-type rigid frame bridge that needs to be replaced from other connections of the railway box-type rigid frame bridge;

[0064] S3, a beam replacement jacking and longitudinal and transverse movement equipment is set below the beam body 29 that needs to be replaced, and the longitudinal arm track 3 of the track beam of the beam replacement jacking and longitudinal and transverse movement equipment is set along the longitudinal direction (length direction) of the beam body 29 that needs to be replaced, and the projection of the longitudinal arm track 3 on the plane where the existing track 30 of the railway box-type rigid frame bridge is located is connected with the existing track 30; a beam replacement jacking and longitudinal and transverse movement equipment can be set at each end (ends in the length direction) below the beam body 29 that needs to be replaced; when the beam replacement jacking and longitudinal and transverse movement equipment is set, the length direction of the longitudinal arm track 3 is consistent with the length direction of the beam body 29 that needs to be replaced, and it should be ensured that when the longitudinal arm track 3 of the beam replacement jacking and longitudinal and transverse movement equipment rises to the plane where the existing track 30 is located, the longitudinal arm track 3 can be connected with the existing track 30

[0065] S4, the lifting mechanism 8 of the beam replacement lifting and transverse movement equipment is lifted, and the hydraulic cylinder 11 of the lifting mechanism 8 drives the rail beam and the rail car 2 upward, so that the carrier frame 22 of the rail car 2 of the beam replacement lifting and transverse movement equipment contacts the bottom surface of the beam body 29 to be replaced;

[0066] S5, the lifting mechanism 8 is raised, and the hydraulic cylinder 11 of the lifting mechanism 8 continues to drive the track beam, the rail car 2 and the beam body 29 to be replaced upward. When the longitudinal arm track 3 is at the same height as the existing track 30, the lifting stops. At this time, the longitudinal arm track 3 on the track beam is connected to the existing track 30 in the removal direction of the beam body 29 to be replaced;

[0067] S6, temporarily rigidly fixing the longitudinal arm track 3 to the existing track 30 in the moving direction of the beam body 29 to be replaced, so that the longitudinal arm track 3 is connected to the existing track 30 in the moving direction of the beam body 29 to be replaced;

[0068] S71, start the railcar 2, and make the railcar 2 carrying the beam 29 to be replaced move along the longitudinal arm track 3 to the existing track 30 in the removal direction of the beam 29 to be replaced. Then, the railcar 2 carrying the beam 29 to be replaced continues to move along the existing track 30 to the ferry track, thereby removing the beam 29 to be replaced.

[0069] S72, stop the railcar 2, then lift the railcar 2, rotate the track wheel assembly 23 of the railcar 2 so that the track wheels 24 of the railcar 2 can move along the ferry track, and then lower the railcar 2 so that the track wheels 24 are located within the ferry track; when lifting the railcar 2, a jack may be used; when the ferry track is perpendicular to the existing track 30, all the track wheel assemblies 23 are rotated 90° in the same direction and fixed, at which point the running direction of the track wheels 24 follows the 90° rotation and is along the ferry track.

[0070] S73, lowering the jack to lower the railcar 2 so that the rail wheels 24 of the railcar 2 fall into the ferry track; starting the railcar 2, and moving the railcar 2 transversely along the ferry track to the desired longitudinal track;

[0071] S74, stop the railcar 2, then lift the railcar 2, rotate the rail wheel assembly 23 so that the rail wheel 24 can move along the expected longitudinal track, and then lower the railcar 2 so that the rail wheel 24 is located within the expected longitudinal track; a jack may be used when lifting the railcar 2; when the ferry track is perpendicular to the existing track 30, rotate all the rail wheel assemblies 23 90° in the direction opposite to the rotation direction in step S72 and fix them, at this time, the running direction of the rail wheel 24 follows the 90° rotation and is along the expected longitudinal track direction;

[0072] S75, lowering the jack to lower the railcar 2, then starting the railcar 2, and moving the railcar 2 longitudinally along the expected longitudinal track to the target position;

[0073] S8, unloading the beam body 29 to be replaced; installing the new beam body 29 onto the rail car 2;

[0074] S9, installing the new beam 29; the installation steps of the new beam 29 are the reverse process of steps S2-S75:

[0075] The railcar 2 moves along the expected longitudinal track to the ferry track; the railcar 2 is stopped, then the railcar 2 is lifted, the rail wheel device 23 is rotated so that the rail wheel 24 can move along the ferry track, and then the railcar 2 is lowered so that the rail wheel 24 is located in the ferry track; the railcar 2 is started, and the railcar 2 moves transversely along the ferry track to the existing track 30; the railcar 2 is stopped, then the railcar 2 is lifted, the rail wheel device 23 is rotated so that the rail wheel 24 can move along the existing track 30, and then the railcar 2 is lowered so that the rail wheel 24 is located in the existing track 30; start the rail car 2, and move the rail car 2 carrying the new beam 29 along the existing track 30 to the position where the beam 29 needs to be replaced; the rail car 2 carrying the new beam 29 continues to move along the longitudinal arm track 3 of the beam replacement jacking and longitudinal and transverse movement equipment until one end of the new beam 29 and one end of the longitudinal arm track 3 are located in the same vertical plane, and then stop the rail car 2; lower the lifting mechanism 8 to connect and fix the track of the new beam 29 to the existing track 30; connect the new beam 29 to other connecting parts of the railway box-type rigid frame bridge.

[0076] If the lifting distance of the beam 29 to be replaced exceeds the maximum stroke of the hydraulic cylinder 11 of the lifting mechanism 8, the construction needs to be suspended, and then the lifting mechanism 8 is temporarily fixed and connected, the lower hinge point of the hydraulic cylinder 11 is released, the hydraulic cylinder 11 is retracted, and the lower hinge point of the hydraulic cylinder 11 is used as the appropriate position of the lifting mechanism 8. Finally, the temporarily rigidly connected lifting mechanism 8 is released, so that the lifting mechanism 8 continues to work and obtains an additional lifting stroke.

[0077] Although the above describes the specific embodiments of the present invention in conjunction with the accompanying drawings, it is not intended to limit the scope of protection of the present invention. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art on the basis of the technical solution of the present invention without creative work are still within the scope of protection of the present invention.

Claims

1. The construction method of railway box-type rigid frame bridge is characterized by: The beam replacement, lifting and vertical and horizontal movement equipment is used, including: The track beam comprises a frame and a longitudinal arm track; the longitudinal arm track is arranged above the frame along the length direction of the beam body to be replaced and is statically connected to the frame; the longitudinal arm track comprises a first longitudinal arm track and a second longitudinal arm track, the first longitudinal arm track is parallel to the second longitudinal arm track, and the distance between the first longitudinal arm track and the second longitudinal arm track is equal to the track gauge of the existing track of the railway box-type rigid frame bridge; The lifting mechanism includes a telescopic sleeve and a hydraulic cylinder; the telescopic sleeve is located below the frame and is telescopically movable, with the top end of the telescopic sleeve connected to the frame; the hydraulic cylinder is located below the frame and is driven up and down, with the top end of the hydraulic cylinder connected to the frame; A rail vehicle comprises a carrier frame, a rail wheel device, rail wheels, and a motor; the rail wheel device is disposed below the carrier frame and is horizontally rotatably connected to the carrier frame; the rail wheel device is mounted on the rail wheel, the rail wheel is placed in the longitudinal arm track and can travel along the longitudinal arm track; the motor drives the rail wheel; The construction method comprises the following steps: S1, laying a ferry track and a desired longitudinal track for transporting the beam to be replaced, wherein the ferry track is connected between the existing track and the desired longitudinal track, and the distance between the ferry track and the beam to be replaced is greater than or equal to the length of the beam to be replaced; S2, disconnecting the beam of the railway box-type rigid frame bridge that needs to be replaced from other connections of the railway box-type rigid frame bridge; S3, installing a beam replacement lifting and transverse movement device below the beam to be replaced, wherein the longitudinal arm track of the track beam of the beam replacement lifting and transverse movement device is arranged in the longitudinal direction of the beam to be replaced, and the projection of the longitudinal arm track on the plane where the existing track of the railway box-type rigid frame bridge is located is connected to the existing track; S4, lifting the lifting mechanism of the beam replacement lifting and longitudinal and transverse movement equipment so that the carrying frame of the rail vehicle of the beam replacement lifting and longitudinal and transverse movement equipment contacts the bottom surface of the beam body to be replaced; S5, lifting the lifting mechanism, and stopping the lifting when the longitudinal arm track is at the same height as the existing track; S6, temporarily rigidly fixing the longitudinal arm track to the existing track to achieve communication between the longitudinal arm track and the existing track; S71, starting the railcar to move the railcar carrying the beam to be replaced along the existing track to the ferry track; S72, stopping and lifting the railcar, rotating the rail wheel device of the railcar so that the rail wheels of the railcar can move along the ferry track, and then lowering the railcar so that the rail wheels are located within the ferry track; S73, landing and starting the railcar to move transversely along the ferry track to the expected longitudinal track; S74, stopping and raising the rail car, rotating the rail wheel device so that the rail wheels can move along the expected longitudinal track, and then lowering the rail car so that the rail wheels are located within the expected longitudinal track; S75, landing and starting the railcar to move to the target position along the expected longitudinal track; S8, unloading the beam to be replaced; and installing the new beam onto the rail car; S9, installing the new beam body; the installation step of the new beam body is the reverse process of steps S2-S75.

2. The construction method of the railway box-type rigid frame bridge according to claim 1, characterized in that: If the lifting distance of the beam to be replaced exceeds the maximum stroke of the hydraulic cylinder of the lifting mechanism, construction needs to be suspended, and then the lifting mechanism must be temporarily fixed, the lower hinge point of the hydraulic cylinder must be released, the hydraulic cylinder must be retracted, and the lower hinge point of the hydraulic cylinder must be used as the appropriate position of the lifting mechanism. Finally, the temporary rigid connection of the lifting mechanism must be released, allowing the lifting mechanism to continue working and obtain additional lifting stroke.

3. The construction method of the railway box-type rigid frame bridge according to claim 1, characterized in that: The frame includes a first transverse arm and a second transverse arm; the first transverse arm and the second transverse arm are parallel; one end of the longitudinal arm track is statically connected to the first transverse arm, and the other end of the longitudinal arm track is statically connected to the second transverse arm.

4. The construction method of the railway box-type rigid frame bridge according to claim 1, characterized in that: The lifting mechanism further includes a base; the base is connected to the bottom end of the telescopic sleeve and the bottom end of the hydraulic cylinder.

5. The construction method of the railway box-type rigid frame bridge according to claim 4, characterized in that: The telescopic sleeve includes an outer cylinder arm and an inner cylinder which are sleeved together. The outer cylinder arm is vertically fixedly connected to the base, and the inner cylinder is vertically fixedly connected to the frame.

6. The construction method of the railway box-type rigid frame bridge according to claim 4, characterized in that: The hydraulic cylinder is hinged to the frame and the base.

7. The construction method of a railway box-type rigid frame bridge according to claim 1, characterized in that: The telescopic sleeve is provided with a latch hole and is equipped with a latch.

8. The construction method of a railway box-type rigid frame bridge according to claim 1, characterized in that: The rail wheel device is connected to the carrier frame via a rotating pair.

9. The construction method of a railway box-type rigid frame bridge according to claim 1, characterized in that: There are four lifting mechanisms, and each lifting mechanism includes two telescopic sleeves and one hydraulic cylinder.

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