Lightweight movable gantry crane device and hoisting equipment for treating railway infrastructure diseases

Abstract

The utility model discloses a light movable gantry crane device which comprises a bearing main beam mechanism, supporting leg mechanisms, a cable-stayed supporting mechanism, a channel steel track, an electric hoisting mechanism and a control cabinet, and the two ends of the bearing main beam mechanism are fixedly supported by the supporting leg mechanisms respectively to form a gantry type frame; the supporting leg mechanism walks in the channel steel track through the advancing wheel set. Electric hoisting mechanisms are symmetrically arranged on the bearing main beam mechanism; transverse moving motor sets are further symmetrically arranged on the bearing main beam mechanism and connected with the electric hoisting mechanism. According to the gantry crane device, the advancing wheel sets are matched with the channel steel tracks, so that the gantry crane device is more convenient and accurate to move, the distance can be transversely and accurately adjusted through the electric hoisting mechanism, and the gantry crane device is suitable for hoisting and accurately positioning steel bearing beams or track plates of different specifications and models; the method is suitable for high-speed rail infrastructure or in-tunnel disease treatment construction, skylight construction difficulty is large, the construction period is long, and guarantee measures are provided for improving construction efficiency and construction quality.

Description

Technical Field

[0001] The utility model relates to a gantry crane device, in particular to a lightweight mobile gantry crane device and a lifting equipment for railway infrastructure disease treatment, belonging to the technical field of railway construction. Background Art

[0002] The operating mileage of China's railways reaches 1.59 million km, and the total length of high-speed railways exceeds 420,000 km. However, affected by multiple factors such as complex operating conditions, climate environment and geological conditions, local hidden defects in railway tracks, subgrades, bridges and tunnels gradually appear, such as the cracking, separation of ballastless track slabs and damage of rail support platforms, the chipping and cracking of tunnel linings, and the cracking of subgrade waterproof sealing layers, which pose potential safety hazards to the safe operation of railways.

[0003] In view of the serious diseases that occur in railway infrastructure, it is often necessary to adopt the scheme of overhead lines to disassemble and replace the diseased structures. At present, commonly used overhead line structures such as D-beams, profiled steel beams and buckle rails are large in size and heavy in structure, and general lifting equipment cannot hoist them, especially in tunnels, where the hoisting implementation is extremely difficult. Therefore, in view of the problems of poor construction environment, great difficulty in construction during the skylight period and long construction period for the treatment of high-speed railway infrastructure diseases, in order to improve construction efficiency and quality, a lightweight mobile gantry crane device and a comprehensive railway infrastructure disease treatment lifting equipment using this gantry crane device are needed. Content of the Utility Model

[0004] To overcome the deficiencies of the above-mentioned prior art, the utility model provides a lightweight mobile gantry crane device, and specifically adopts the following technical solutions:

[0005] A lightweight mobile gantry crane device includes: a load-bearing main beam mechanism, a support leg mechanism, a stay support mechanism, a channel steel track, an electric hoisting mechanism, and a control cabinet. It is characterized in that: both ends of the load-bearing main beam mechanism are respectively fixedly supported by the support leg mechanism to form a gantry frame; the support leg mechanism travels in the channel steel track through a traveling wheel set; electric hoisting mechanisms are symmetrically arranged on the load-bearing main beam mechanism; a transverse movement motor set is also symmetrically arranged on the load-bearing main beam mechanism, and the transverse movement motor set is connected to the electric hoisting mechanism.

[0006] Preferably: the load-bearing main beam mechanism includes a load-bearing main beam, and the cross-section of the load-bearing main beam is a box structure; a number of stiffening rib plates are arranged at both ends and the stay force points of the load-bearing main beam, long strip holes are symmetrically opened at both ends of the load-bearing main beam, slide rails are arranged on both sides of the long strip holes; connecting seat plates are symmetrically arranged at both ends below the load-bearing main beam, and stay connection ear rings are symmetrically arranged inside the connecting seat plates, and there are 2 parallel stay connection ear rings on each side.

[0007] Preferably, the transverse movement motor set includes a transverse movement motor, which is connected to a T-shaped lead screw through a transmission mechanism, and the transverse movement motor drives the T-shaped lead screw to perform a rotary motion; the T-shaped lead screw is also connected to a first handwheel through a transmission mechanism.

[0008] Preferably, the support leg mechanism includes a heightening block, a column, a quick-insert pin, a support cross beam, a column base plate, a cross beam base plate, a traveling wheel set, and a traveling wheel set seat plate; the lower end of the column is fixedly provided with a column base plate; a diagonal brace connection earring is provided in the middle of the column, and one diagonal brace connection earring is provided on each side of the column, and two diagonal brace connection earrings are arranged in parallel on the inner side of the column; the upper end of the column is fixedly provided with a heightening block seat plate; a cross beam seat plate is provided in the middle of the upper part of the support cross beam; diagonal brace connection earrings are symmetrically arranged on both sides of the cross beam seat plate, and the diagonal brace connection earrings are fixed on the cross beam seat plate; traveling wheel set seat plates are provided at both ends of the lower part of the support cross beam; the column base plate is installed on the cross beam base plate; the heightening block is installed on the heightening block seat plate.

[0009] Preferably, diagonal tension support mechanisms are symmetrically arranged on both sides of the column. The diagonal tension support mechanism includes a support pipe, a right-hand thread lock nut, a right-hand thread hanging ear, a left-hand thread lock nut, a left-hand thread hanging ear, and the support pipe is a stainless steel pipe; the right-hand thread hanging ears of the two groups of diagonal tension support mechanisms are respectively connected to the diagonal brace connection earrings arranged on both sides of the column through quick-insert pins, and the left-hand thread hanging ears of the two groups of diagonal tension support mechanisms are respectively connected to the diagonal brace connection earrings arranged on both sides of the cross beam seat plate through quick-insert pins.

[0010] Preferably, in the support leg assembly, traveling wheel sets are fixedly installed at the traveling wheel seat plates at both ends of the cross beam seat plate; the traveling wheel set includes a traveling wheel seat, a wheel shaft, a bearing, a traveling wheel, a guide shaft, a guide bearing, and a circlip; a traveling wheel mounting hole and a guide bearing mounting hole are provided on the traveling wheel seat; the traveling wheel is installed on the traveling wheel mounting hole through the wheel shaft, bearing, and circlip to rotate; the guide bearing is installed on the guide bearing mounting hole through the guide shaft and circlip; there are two groups of traveling wheel sets, which are respectively installed at the traveling wheel set seat plates at both ends of the support cross beam, and the traveling wheel seat of the traveling wheel set is fixedly connected to the traveling wheel set seat plate. The traveling wheel set is arranged in a channel steel track, and the traveling wheel contacts the bottom surface of the channel steel track; the two groups of guide bearings are respectively close to the two inner walls of the channel steel; there are two groups of support leg mechanisms, and the connecting seat plates at both ends of the load-bearing main beam are respectively installed on the heightening blocks at the uppermost ends of the two groups of support leg mechanisms to form a gantry frame; between each group of support leg assemblies and the load-bearing main beam, two groups of diagonal tension support mechanisms are respectively arranged. The right-hand thread hanging ears of the diagonal tension support mechanism are respectively connected to the diagonal brace connection earrings arranged below the load-bearing main beam through quick-insert pins, and the left-hand thread hanging ears of the diagonal tension support mechanism are respectively connected to the diagonal brace connection earrings arranged on the inner side of the column through quick-insert pins; the right-hand thread lock nut and the left-hand thread lock nut are rotated to pre-tighten and adjust the diagonal tension support mechanism.

[0011] Preferably, electric hoisting mechanisms are symmetrically arranged at both ends of the load-bearing main beam. The electric hoisting mechanism includes a hoisting seat, a hoisting winch, a T-shaped nut, a hook, a second handwheel, and a winch motor. There are 2 groups of electric hoisting mechanisms. A slider is fixedly arranged below the hoisting seat. The slider corresponds to the slide rail arranged on the load-bearing main beam. The slider is in a "concave" shape. The 2 groups of electric hoisting mechanisms are respectively matched with the slide rails arranged at both ends of the load-bearing main beam through the sliders. A T-shaped nut is also arranged on one side of the hoisting seat. On the hoisting seat, a T-shaped lead screw through hole is arranged behind the T-shaped nut. The T-shaped nut is matched with the T-shaped lead screw arranged on the load-bearing main beam. On the hoisting seat, a T-shaped lead screw through hole is arranged behind the T-shaped nut. The T-shaped lead screw passes through the T-shaped nut and then passes through the T-shaped lead screw through hole. The hoisting winch is fixedly installed on the hoisting seat. The chain block of the hoisting winch is connected to the hook and arranged in the long hole of the load-bearing main beam, and can freely rise and fall in the long hole.

[0012] Preferably, the electric hoisting mechanism is equipped with lifting tools, and the lifting tools include a C-shaped lifting tool, a lifting hole lifting tool, a semi-packaged track slab lifting tool, and a ballast bed surface anchoring lifting tool. When hoisting CRTS I-type slab ballastless track slabs, CRTS II-type slab ballastless track slabs, CRTS III-type slab ballastless track slabs, and CRTS I-type double-block ballastless track slabs, the C-shaped lifting tool is used. When hoisting the ballastless steel bearing beam, three lifting tools, namely the lifting hole lifting tool, the semi-packaged track slab lifting tool, and the ballast bed surface anchoring lifting tool, are used. Rubber pads are laid on the lifting tools to prevent the track slabs from being damaged during the lifting process.

[0013] Preferably, the control cabinet is suspended and fixed in the middle of the load-bearing main beam through a bracket. The control cabinet is equipped with 2 controllers, which respectively control 2 groups of electric hoisting mechanisms. A handle is arranged on the controller, and the handle can move in four degrees of freedom: up, down, left, and right.

[0014] The present invention also discloses a hoisting device for rectifying diseases of railway infrastructure, which is characterized in that: the hoisting device includes the above-mentioned lightweight mobile gantry crane device.

[0015] Beneficial effects

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: The support leg assembly is welded with ordinary carbon steel with a relatively large density, which is beneficial to improving the stability of the entire gantry crane device. The load-bearing main beam is welded with aviation high-strength aluminum with a relatively small density, which can effectively reduce the weight of the gantry crane device. The gantry crane device of the present invention adopts the cooperation of the traveling wheel set and the channel steel track, making the movement of the gantry crane device more convenient and accurate. The electric hoisting mechanism can accurately adjust the distance horizontally, which is suitable for the hoisting and precise positioning of steel bearing beams or track slabs of different specifications and models, and is applicable to places with harsh environments such as the rectification construction of high-speed rail infrastructure or in tunnels, where the construction during the skylight period is difficult and the construction period is long. It provides guarantee measures for improving the construction efficiency and construction quality. Brief description of the drawings

[0017] Figure 1 This is the axonometric schematic diagram of the present utility model;

[0018] Figure 2 This is the schematic diagram of the load-bearing main beam mechanism of the present utility model;

[0019] Figure 3 This is the schematic diagram of the support leg mechanism of the present utility model.

[0020] Figure 4 This is the schematic diagram of the traveling wheel set of the present utility model and its exploded structure diagram.

[0021] Figure 5 This is the schematic diagram of the diagonal bracing mechanism of the present utility model.

[0022] Figure 6 This is the schematic diagram of the electric hoisting mechanism of the present utility model.

[0023] Figure 7 This is the schematic diagram of the relative position between the lightweight mobile gantry crane device of the present utility model and the steel cushion beam or ballastless track slab to be hoisted.

[0024] In the figure: 1. Load-bearing main beam mechanism; 2. Support leg mechanism; 3. Diagonal bracing mechanism; 4. Channel steel track; 5. Electric hoisting mechanism; 6. Control cabinet; 11. Load-bearing main beam; 12. T-shaped lead screw; 13. First handwheel; 14. Connecting seat plate; 15. Diagonal brace connecting earring; 16. Stiffening rib; 17. Transverse movement motor group; 18. Long strip hole; 19. Slide rail; 21. Heightening block; 22. Column; 23. Quick insertion pin; 24. Support cross beam; 25. Column base plate; 26. Cross beam base plate; 27. Traveling wheel set; 28. Traveling wheel set seat plate; 31. Support pipe; 32. Positive thread locking nut; 33. Positive thread hanging ear; 34. Reverse thread locking nut; 35. Reverse thread hanging ear; 51. Hoisting gourd; 52. Hoisting seat; 53. T-shaped nut; 54. Hook; 55. Second handwheel; 56. Gourd motor Detailed implementation manners

[0025] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0026] Please refer to Figure 1-7, the utility model provides a technical solution: a lightweight mobile gantry crane device, including: a load-bearing main beam mechanism 1, a support leg mechanism 2, a stay support mechanism 3, a channel steel track 4, an electric hoisting mechanism 5, and a control cabinet 6.

[0027] Both ends of the load-bearing main beam mechanism are respectively fixedly supported by the support leg mechanism to form a gantry frame; the support leg mechanism travels in the channel steel track through the traveling wheel set; the electric hoisting mechanism is symmetrically arranged on the load-bearing main beam mechanism, and the hook of the electric hoisting mechanism can freely lift to lift heavy objects; the load-bearing main beam mechanism is also symmetrically provided with a transverse movement motor group, and the transverse movement motor group is connected to the electric hoisting mechanism through a T-shaped lead screw and a T-shaped nut, and can drive the electric hoisting mechanism to move horizontally to realize the hoisting of heavy objects with different lengths.

[0028] The load-bearing main beam mechanism includes a load-bearing main beam 11, the cross-section of the load-bearing main beam is a box structure, and the load-bearing main beam is welded by aerospace high-strength aluminum; the height of the load-bearing main beam is between 150 mm and 300 mm, the span of the load-bearing main beam is between 3600 mm and 3900 mm, and the bearing capacity of a single main beam is not less than 7.5 tons.

[0029] A number of stiffening rib plates 16 are arranged at both ends of the load-bearing main beam and the stress points of the diagonal braces. Long strip holes 18 are symmetrically opened at both ends of the load-bearing main beam, and slide rails 19 are arranged on both sides of the long strip holes. The slide rails are fixedly connected to the load-bearing main beam by bolts. The material of the slide rails is stainless steel, and the shape is "I" shaped. The long strip holes and the slide rails are mainly used for installing the electric hoisting mechanism 5, and the electric hoisting mechanism can horizontally translate in the long strip holes; a transverse movement motor group 17 is also symmetrically arranged at both ends of the load-bearing main beam, and connecting seat plates 14 are symmetrically arranged at both ends under the load-bearing main beam, and diagonal brace connecting ear rings 15 are symmetrically arranged on the inner side of the connecting seat plates. There are 2 parallel diagonal brace connecting ear rings on each side.

[0030] The transverse movement motor group 17 includes a transverse movement motor. The transverse movement motor is connected to a T-shaped lead screw 12 through a transmission mechanism, and the transverse movement motor drives the T-shaped lead screw to make a rotary motion; the T-shaped lead screw is also connected to a first hand wheel 13 through a transmission mechanism. When the transverse movement motor fails, the first hand wheel can be rotated manually to drive the T-shaped lead screw to rotate for emergency operation; the horizontal adjustment distance of the transverse movement motor group is 0 - 300 mm, and the object to be hoisted can be adjusted in the horizontal direction.

[0031] The described support leg mechanism 2 includes a heightening block 21, a column 22, a quick-insert pin 23, a support crossbeam 24, a column base plate 25, a crossbeam base plate 26, a traveling wheel set 27, and a traveling wheel set seat plate 28; the column is made of ordinary carbon steel by welding, and a column base plate is fixedly arranged at the lower end of the column, and several stiffening rib plates are provided to increase the strength. Several bolt holes are provided on the column base plate; 4 diagonal brace connection earrings are arranged in the middle of the column, with 1 diagonal brace connection earring arranged on each side of the column, and 2 diagonal brace connection earrings arranged side by side on the inner side of the column, and several stiffening rib plates are provided to increase the strength; a heightening block seat plate is fixedly arranged at the upper end of the column, and several stiffening rib plates are provided to increase the strength. Several bolt holes are provided on the heightening block seat plate; the heightening block has upper and lower end faces, and bolt holes are provided on both the upper and lower end faces of the heightening block; the support crossbeam is of box structure and is made of ordinary carbon steel by welding; a crossbeam seat plate is arranged at the middle position of the upper part of the support crossbeam, and several stiffening rib plates are provided to increase the strength; diagonal brace connection earrings are symmetrically arranged on both sides of the crossbeam seat plate, and the diagonal brace connection earrings are fixed on the crossbeam seat plate by welding; traveling wheel set seat plates are arranged at both ends of the lower part of the support crossbeam, and several stiffening rib plates are provided to increase the strength.

[0032] The column base plate is installed on the crossbeam base plate and is fixedly connected by bolts; the heightening block is installed on the heightening block seat plate and is fixedly connected by bolts; when the height of the column is insufficient, a heightening block can be added for heightening. The height of the described heightening block is between 100 mm and 300 mm, and the heightening blocks are fixedly connected by bolts.

[0033] Diagonal tension support mechanisms 3 are symmetrically arranged on both sides of the column.

[0034] The described diagonal tension support mechanism includes a support pipe 31, a right-hand thread locking nut 32, a right-hand thread hanging ear 33, a left-hand thread locking nut 34, a left-hand thread hanging ear 35, and the support pipe is a stainless steel pipe.

[0035] In the support leg assembly, the right-hand thread hanging ears of the 2 groups of diagonal tension support mechanisms are respectively connected to the diagonal brace connection earrings arranged on both sides of the column through quick-insert pins, and the left-hand thread hanging ears of the 2 groups of diagonal tension support mechanisms are respectively connected to the diagonal brace connection earrings arranged on both sides of the crossbeam seat plate through quick-insert pins; by rotating the right-hand thread locking nut and the left-hand thread locking nut, the diagonal tension support mechanism can be pre-tightened and adjusted to ensure the stability of the support leg assembly.

[0036] In the support leg assembly, traveling wheel sets are fixedly installed at the traveling wheel seat plates at both ends of the crossbeam seat plate.

[0037] The traveling wheel assembly 27 includes a traveling wheel seat 271, a wheel axle 272, a bearing 273, a traveling wheel 274, a guide shaft 275, a guide bearing 276, and a retaining spring 277; the traveling wheel seat 271 is provided with a traveling wheel mounting hole 2711 and a guide bearing mounting hole 2712; the traveling wheel 274 is installed on the traveling wheel mounting hole 2711 through the wheel axle 272, two bearings 273, and a retaining spring 277, and the traveling wheel can rotate freely around its own axis; the guide bearing 276 is installed on the guide bearing mounting hole 2712 through the guide shaft 275 and the retaining spring 277, and the guide bearing can rotate freely around its own axis, and there are two groups of guide bearings.

[0038] There are two groups of traveling wheel groups, which are respectively installed at the traveling wheel group seat plates at both ends of the supporting crossbeam, and the traveling wheel seats of the traveling wheel group are fixedly connected with the traveling wheel group seat plates by bolts. The traveling wheel group is arranged in the channel steel track, and the traveling wheel contacts the bottom surface of the channel steel track to support the entire gantry crane. The traveling wheel rolls in the channel steel track to drive the gantry crane to move along the channel steel track; the two groups of guide bearings are respectively close to the two inner walls of the channel steel; the gantry crane travels along the laid channel steel track, and the traveling wheel group may tilt during the travel process. When the traveling wheel group hits the channel steel wall, the guide bearing contacts the channel steel wall, and the rotating guide bearing provides a guiding effect for the traveling wheel group, so as to keep the traveling wheel group sliding in the channel steel without being stuck.

[0039] There are two groups of supporting leg mechanisms, and the connecting seat plates at both ends of the supporting main beam are respectively installed on the uppermost heightening blocks of the two groups of supporting leg mechanisms, and are fixedly connected by bolts to form a gantry frame; the span of the supporting main beam is between 3600mm and 3900mm, and the span of the two groups of supporting leg mechanisms is between 3000mm and 3900mm.

[0040] Two groups of diagonal support mechanisms are arranged between each group of supporting leg assemblies and the load-bearing main beam. The positive-thread hanging ears of the diagonal support mechanism are respectively connected to the diagonal support connecting earrings arranged below the load-bearing main beam through quick-insert pins, and the negative-thread hanging ears of the diagonal support mechanism are respectively connected to the diagonal support connecting earrings arranged on the inner side of the column through quick-insert pins; by rotating the positive-thread locking nut and the negative-thread locking nut, the diagonal support mechanism can be pre-tightened and adjusted to ensure the stability of the gantry frame.

[0041] Electric hoisting mechanisms 5 are symmetrically arranged at both ends of the load-bearing main beam.

[0042] The electric hoisting mechanism includes a hoisting seat 51, a hoisting winch 52, a T-shaped nut 53, a hook 54, a handwheel 55, and a winch motor 56. There are 2 sets of the electric hoisting mechanisms. A slider is fixedly arranged below the hoisting seat. The slider corresponds to the slide rail arranged on the load-bearing main beam, and the slider is in a "concave" shape. The 2 sets of electric hoisting mechanisms are respectively matched with the slide rails arranged at both ends of the load-bearing main beam through the sliders, and the sliders and the slide rails can slide freely relative to each other. A T-shaped nut 53 is also arranged on one side of the hoisting seat. On the hoisting seat, a T-shaped lead screw through hole is arranged behind the T-shaped nut. The T-shaped nut is matched with the T-shaped lead screw 12 arranged on the load-bearing main beam. On the hoisting seat, a T-shaped lead screw through hole is arranged behind the T-shaped nut. The T-shaped lead screw passes through the T-shaped nut and then passes through the T-shaped lead screw through hole to avoid interference. The rotation of the T-shaped lead screw can drive the T-shaped nut to move forward and backward, thereby driving the electric hoisting mechanism to move horizontally. The horizontal adjustment distance of the transverse movement motor group is 0 - 300 mm, and the object to be hoisted can be adjusted in the horizontal direction. The hoisting winch is fixedly installed on the hoisting seat. The chain block of the hoisting winch is connected to the hook 54 and is arranged in the long hole 17 of the load-bearing main beam and can freely rise and fall in the long hole. The hoisting winch is driven by the winch motor 56 through a transmission mechanism. The hoisting winch is also equipped with a second handwheel 55. When the winch motor fails, emergency manual operation can be realized manually.

[0043] The electric hoisting mechanism is also equipped with a lifting tool, and the lifting tool includes a C-shaped lifting tool, a lifting hole lifting tool, a semi-packaged track slab lifting tool, and a ballast bed surface anchoring lifting tool. When hoisting CRTS I-type slab track, CRTS II-type slab track, CRTS III-type slab track, and CRTS I-type double-block ballastless track slab, the C-shaped lifting tool is adopted. When hoisting the ballastless steel cushion beam, three lifting tools, namely the lifting hole lifting tool, the semi-packaged track slab lifting tool, and the ballast bed surface anchoring lifting tool, can be adopted. The lifting tool is provided with a rubber pad laid to prevent the track slab from being damaged during the hoisting process.

[0044] The control cabinet 6 is fixedly suspended on the middle part of the load-bearing main beam through a bracket. The control cabinet is equipped with 2 controllers, which respectively control 2 sets of electric hoisting mechanisms. A handle is arranged on the controller, and the handle can move in four degrees of freedom, namely up, down, left, and right. Among them, when the handle moves up or down, it controls the forward or reverse rotation of the winch motor, so that the chain block drives the hook to rise or fall. When the handle moves left or right, it controls the forward or reverse rotation of the transverse movement motor, drives the forward or reverse rotation of the T-shaped lead screw, thereby driving the T-shaped nut to move forward or backward, and driving the electric hoisting mechanism to move forward or backward, so as to realize the adjustment of the object to be hoisted in the horizontal direction.

[0045] According to the light mobile gantry crane device of the above embodiment, a method for constructing a steel cushion beam or a ballastless track slab includes:

[0046] When using a steel cushion beam to support the track in a ballast track tunnel, after clearing the ballast at the bottom of the tunnel within the construction area, temporary sleeper piers are erected in the excavation trench at intervals less than 1.5 m. After completion, channel steel tracks for gantry cranes are laid on both sides of the construction area. The channel steel tracks are connected to the side walls of the tunnel lining through small channel steels to ensure that the channel steel tracks do not undergo lateral displacement. At the same time, the steel cushion beam is transported to the designated position by a slab transport vehicle. After part of the channel steel tracks are laid, the gantry crane can be assembled on the channel steel tracks. After the gantry crane is assembled, the slab transport vehicle moves under the gantry crane, and lifting clamps are installed at the ends of the steel cushion beam. The steel cushion beam is lifted synchronously and at a uniform speed. When the steel cushion beam is separated from the slab transport vehicle, it is transported to the excavation trench position by manpower. The horizontal position of the steel cushion beam is finely adjusted through the transverse movement motor unit of the gantry crane. After the ends of the steel cushion beam are accurately aligned with the steel bearings, the steel cushion beam is lowered at a uniform speed until it contacts the rubber cushion plate of the steel bearing.

[0047] When carrying out slab replacement or bottom replacement construction of the ballastless track, channel steel tracks for gantry cranes are laid on the road shoulders on both sides of the construction area or on the surface of the tunnel filling layer to ensure that the channel steel tracks do not undergo lateral displacement. At the same time, the steel cushion beam or ballastless track slab is transported to the designated position by a slab transport vehicle. After the channel steel tracks are laid, the gantry crane can be assembled on the channel steel tracks. After the gantry crane is assembled, the slab transport vehicle moves under the gantry crane, and lifting clamps are installed at the ends of the steel cushion beam or at the ends of the ballastless track slab. The steel cushion beam or ballastless track slab is lifted synchronously and at a uniform speed. When the steel cushion beam or ballastless track slab is separated from the slab transport vehicle, it is transported to the slab replacement or beam erection position by manpower. The horizontal position of the steel cushion beam or ballastless track slab is finely adjusted through the transverse movement motor unit of the gantry crane. After the ends of the steel cushion beam or the ends of the ballastless track slab are accurately aligned, the steel cushion beam or ballastless track slab is lowered at a uniform speed, and the slab replacement or beam erection construction can be completed.

[0048] The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0049] Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A lightweight mobile gantry crane device, comprising: The load-bearing main beam mechanism, the supporting leg mechanism, the inclined supporting mechanism, the channel steel track, the electric lifting mechanism, and the control cabinet are characterized in that: the two ends of the load-bearing main beam mechanism are respectively fixedly supported by the supporting leg mechanisms to form a gantry frame; the supporting leg mechanism travels in the channel steel track through the traveling wheel group; the electric lifting mechanism is symmetrically arranged on the load-bearing main beam mechanism; the load-bearing main beam mechanism is also symmetrically arranged with a transverse motor group, and the transverse motor group is connected to the electric lifting mechanism.

2. A lightweight mobile gantry crane device according to claim 1, characterized in that: The bearing main beam mechanism includes a bearing main beam, and the cross-section of the bearing main beam is a box-type structure; a number of stiffening ribs are arranged at both ends of the bearing main beam and at the force bearing points of the diagonal braces, and long holes are symmetrically opened at both ends of the bearing main beam, and slide rails are arranged on both sides of the long holes; connecting seat plates are symmetrically arranged at the lower ends of the bearing main beam, and diagonal brace connecting earrings are also symmetrically arranged on the inner side of the connecting seat plates, and there are 2 parallel diagonal brace connecting earrings on each side.

3. A lightweight mobile gantry crane device according to claim 1, characterized in that: The transverse motor assembly comprises a transverse motor, which is connected to a T-shaped lead screw through a transmission mechanism, and the transverse motor drives the T-shaped lead screw to perform a rotary motion; the T-shaped lead screw is also connected to a first hand wheel through the transmission mechanism.

4. A lightweight mobile gantry crane device according to claim 1, characterized in that: The supporting leg mechanism includes a heightening block, a column, a quick-insert pin, a supporting beam, a column base plate, a beam base plate, a traveling wheel group, and a traveling wheel group seat plate; the column base plate is fixedly arranged at the lower end of the column; an oblique brace connecting earring is arranged in the middle of the column, wherein one oblique brace connecting earring is arranged on each side of the column, and two oblique brace connecting earrings are arranged in parallel on the inner side of the column; the heightening block seat plate is fixedly arranged at the upper end of the column; a beam seat plate is arranged at the middle position of the upper part of the supporting beam; oblique brace connecting earrings are symmetrically arranged on both sides of the beam seat plate, and the oblique brace connecting earrings are fixed on the beam seat plate; traveling wheel group seat plates are arranged at both ends of the lower part of the supporting beam; the column base plate is installed on the beam base plate; the heightening block is installed on the heightening block seat plate.

5. A lightweight mobile gantry crane device according to claim 4, characterized in that: The oblique-stayed support mechanism is symmetrically arranged on both sides of the column, and the oblique-stayed support mechanism includes a support tube, a positive-thread locking nut, a positive-thread hanging ear, a negative-thread locking nut, and a negative-thread hanging ear. The support tube is a stainless steel tube; the positive-thread hanging ears of the two groups of oblique-stayed support mechanisms are respectively connected to the oblique-support connecting earrings arranged on both sides of the column through quick-insert pins, and the negative-thread hanging ears of the two groups of oblique-stayed support mechanisms are respectively connected to the oblique-support connecting earrings arranged on both sides of the beam seat plate through quick-insert pins.

6. A lightweight mobile gantry crane device according to claim 4, characterized in that: In the supporting leg assembly, a traveling wheel assembly is fixedly installed at the traveling wheel seat plates at both ends of the beam seat plate; the traveling wheel assembly includes a traveling wheel seat, a wheel axle, a bearing, a traveling wheel, a guide shaft, a guide bearing, and a retaining spring; a traveling wheel mounting hole and a guide bearing mounting hole are provided on the traveling wheel seat; the traveling wheel is mounted on the traveling wheel mounting hole through the wheel axle, the bearing, and the retaining spring; the guide bearing is mounted on the guide bearing mounting hole through the guide shaft and the retaining spring; there are two groups of traveling wheel assemblies, which are respectively installed at the traveling wheel assembly seat plates at both ends of the supporting beam, and the traveling wheel seats of the traveling wheel assembly are fixedly connected to the traveling wheel assembly seat plates; the traveling wheel assembly is arranged in the channel steel track, and the traveling wheel and The bottom surface of the channel steel track is in contact; two groups of guide bearings are respectively close to the two inner walls of the channel steel; there are two groups of support leg mechanisms, and the connecting seat plates at both ends of the load-bearing main beam are respectively installed on the heightening blocks at the uppermost ends of the two groups of support leg mechanisms to form a gantry frame; two groups of diagonal support mechanisms are respectively arranged between each group of support leg assemblies and the load-bearing main beam, and the positive-tooth hanging ears of the diagonal support mechanism are respectively connected to the diagonal support connecting earrings arranged under the load-bearing main beam through quick-insert pins, and the reverse-tooth hanging ears of the diagonal support mechanism are respectively connected to the diagonal support connecting earrings arranged on the inner side of the column through quick-insert pins; the positive-tooth locking nut and the reverse-tooth locking nut are rotated to pre-tighten the diagonal support mechanism.

7. A lightweight mobile gantry crane device according to claim 4, characterized in that: Electric lifting mechanisms are symmetrically arranged at both ends of the load-bearing main beam, and the electric lifting mechanisms include a lifting seat, a lifting hoist, a T-nut, a hook, a second hand wheel, and a hoist motor; there are two groups of electric lifting mechanisms, and a slider is fixedly arranged below the lifting seat, and the slider corresponds to the slide rail arranged on the load-bearing main beam, and the slider is "concave" shaped; the two groups of electric lifting mechanisms are respectively matched with the slide rails arranged at both ends of the load-bearing main beam through the slider; a T-nut is also arranged on one side of the lifting seat, and a T-screw through hole is arranged behind the T-nut on the lifting seat, and the T-nut cooperates with the T-screw arranged on the load-bearing main beam; a T-screw through hole is arranged behind the T-nut on the lifting seat, and the T-screw passes through the T-screw through hole after passing through the T-nut; the lifting hoist is fixedly installed on the lifting seat, and the fall chain connecting hook of the lifting hoist is arranged in the long hole of the load-bearing main beam, and can rise and fall freely in the long hole.

8. The lightweight mobile gantry crane device according to claim 4, characterized in that: The electric lifting mechanism is equipped with lifting equipment, including C-type lifting equipment, lifting hole lifting equipment, half-enclosed track plate lifting equipment and track bed plate surface anchor lifting equipment; when lifting CRTS I type plate, CRTS II type plate, CRTS III type plate and CRTS I type double-block ballastless track plate, C-type lifting equipment is used; when lifting ballastless steel pad beams, three types of lifting equipment are used, including lifting hole lifting equipment, half-enclosed track plate lifting equipment and track bed plate surface anchor lifting equipment; the lifting equipment adopts rubber pads to prevent the track plate from being damaged during lifting.

9. The lightweight mobile gantry crane device according to claim 1, characterized in that: The control cabinet is fixed to the middle of the load-bearing main beam through a bracket. The control cabinet is equipped with two controllers, which respectively control two sets of electric lifting mechanisms. The controller is provided with a handle, which can move in four degrees of freedom: up, down, left, and right.

10. A hoisting device for repairing railway infrastructure defects, characterized by: The lifting equipment includes the lightweight mobile gantry crane device described in any one of claims 1-9.

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