CN118405594B - Rail type transportation device for bridge precast slabs - Google Patents

Rail type transportation device for bridge precast slabs Download PDF

Info

Publication number
CN118405594B
CN118405594B CN202410888521.9A CN202410888521A CN118405594B CN 118405594 B CN118405594 B CN 118405594B CN 202410888521 A CN202410888521 A CN 202410888521A CN 118405594 B CN118405594 B CN 118405594B
Authority
CN
China
Prior art keywords
crown block
supporting leg
bridge
precast slab
bridge precast
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202410888521.9A
Other languages
Chinese (zh)
Other versions
CN118405594A (en
Inventor
赵红军
范兴家
李景辉
陈立娜
周航
王佳音
吴泽沛
田文轩
陈健
贾维杰
王海涛
张建强
张喜伟
冯少蕾
王庭作
郭世峰
徐刚
宋文正
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Luoyang Runhai Construction Engineering Co ltd
Original Assignee
Luoyang Runhai Construction Engineering Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Luoyang Runhai Construction Engineering Co ltd filed Critical Luoyang Runhai Construction Engineering Co ltd
Priority to CN202410888521.9A priority Critical patent/CN118405594B/en
Publication of CN118405594A publication Critical patent/CN118405594A/en
Application granted granted Critical
Publication of CN118405594B publication Critical patent/CN118405594B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66CCRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C5/00Base supporting structures with legs
    • B66C5/02Fixed or travelling bridges or gantries, i.e. elongated structures of inverted L or of inverted U shape or tripods
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66CCRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C1/00Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
    • B66C1/10Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
    • B66C1/12Slings comprising chains, wires, ropes, or bands; Nets
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66CCRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C15/00Safety gear
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66CCRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C6/00Girders, or track-supporting structures, specially adapted for cranes

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Bridges Or Land Bridges (AREA)

Abstract

The invention relates to the technical field of transportation devices, in particular to a track type transportation device for a bridge precast slab. The utility model provides a bridge prefabricated plate rail mounted conveyer includes hoisting mechanism, and hoisting mechanism includes first crown block and second crown block, and first crown block and second crown block set gradually in the fore-and-aft direction, and first crown block and second crown block slidable install on the girder erection machine double beam in the fore-and-aft direction, all are provided with the elevating system who is used for the hoist and mount bridge prefabricated plate of waiting to install on first crown block and the second crown block. The front end of the bridge precast slab to be installed is hoisted on the first crown block through the lifting mechanism before the driving girder erection machine double girders move forwards, so that potential safety hazards caused by unstable gravity centers in the process of moving the girder erection machine double girders forwards can be avoided, and the girder erection machine double girders can be moved to a preset position at one time, so that time is saved.

Description

Rail type transportation device for bridge precast slabs
Technical Field
The invention relates to the technical field of bridge construction, in particular to a track type transportation device for a bridge precast slab.
Background
Bridge is a structure which is generally erected on rivers, lakes and seas and can smoothly pass vehicles, pedestrians and the like. The bridge is generally composed of an upper structure, a lower structure, a support and an accessory structure, wherein the upper structure is also called a bridge span structure and is a main structure for crossing obstacles; the substructure comprises bridge abutment, pier and foundation.
When bridging, the track type transportation device is required to be used for installing the bridge precast slab on the bridge pier, when the bridge precast slab is installed, a crane or a trolley is generally adopted, the bridge precast slab is firstly horizontally arranged on the carrying trolley, then the carrying trolley is transported to the lower part of the track type transportation device, and then the track type transportation device drags the bridge precast slab to move to a designated position, but when the bridge is bridged, the prior track type transportation device has complex steps, long consumed time and influences the engineering progress.
Disclosure of Invention
The invention provides a track type transportation device for a bridge precast slab, which aims to solve the problems of complex operation steps and long time consumption of the existing track type transportation device.
The track type transportation device for the bridge precast slabs adopts the following technical scheme:
A track type transportation device for bridge precast slabs is characterized in that a bridge precast slab is installed between two piers; the rail-mounted transportation device for the bridge precast slab comprises an auxiliary supporting leg, a front supporting leg, a middle supporting leg, a rear supporting leg and a girder erection machine double girder; the auxiliary support legs, the front support legs, the middle support legs and the rear support legs are all arranged on the bridge deck after the splicing is completed in an initial state, the front support legs and the middle support legs are sequentially arranged in the front-back direction, the girder erection machine double beams are arranged above the front support legs and the middle support legs, and the front support legs and the middle support legs are provided with first driving mechanisms for enabling the girder erection machine double beams to move along the direction where the lengths of the girder erection machine double beams are; the auxiliary supporting leg and the rear supporting leg are respectively arranged at the lower sides of the front end and the rear end of the double beam of the beam erecting machine, and are arranged in a telescopic manner in the up-down direction. The rail-mounted transportation device for the bridge precast slabs further comprises a hoisting mechanism, wherein the hoisting mechanism comprises a first crown block and a second crown block, the first crown block and the second crown block are sequentially arranged in the front-back direction, the first crown block and the second crown block are slidably arranged on the double beams of the girder erection machine in the front-back direction, and lifting mechanisms for hoisting the bridge precast slabs to be installed are arranged on the first crown block and the second crown block.
When in construction, the carrying trolley is used for carrying the bridge precast slabs to be installed onto the bridge deck, and the front ends of the bridge precast slabs to be installed are hung on the first crown block through the lifting mechanism; the auxiliary supporting leg and the rear supporting leg are in a contracted state, the first driving mechanism on the front supporting leg and the middle supporting leg drives the girder erection machine double girders to move forwards, the first crown block and the second crown block are static relative to the bridge deck, and the auxiliary supporting leg and the rear supporting leg extend downwards to support the girder erection machine double girders until the auxiliary supporting leg moves to the upper part of one pier in front; and then the rear end of the bridge precast slab to be installed is hoisted on a second crown block through a lifting mechanism, and then the first crown block and the second crown block drive the bridge precast slab to move forwards together, and two ends of the bridge precast slab are respectively lapped on two adjacent piers.
Further, the girder erection machine double girder comprises two single girders extending along the front-back direction, the number of the auxiliary supporting legs, the front supporting legs, the middle supporting legs and the rear supporting legs is two, and each auxiliary supporting leg, each front supporting leg, each middle supporting leg and each rear supporting leg are arranged corresponding to one single girder; two track frames extending along the left-right direction are further arranged between the two single beams, the first crown block is slidably arranged along one track frame in the left-right direction, and the second crown block is slidably arranged along the other track frame in the left-right direction.
Further, each lifting mechanism comprises two windlass and a lifting rope component, the two windlass are respectively arranged at the left side and the right side of the first crown block or the second crown block, the lower ends of the steel wire ropes on the two windlass of the lifting mechanism are connected with a balance plate together, the balance plate extends along the left-right direction, and fixed pulleys are arranged at the lower parts of the left end and the right end of the balance plate; the lifting rope component is used for supporting the bridge precast slab, and is provided with two end parts, and when the lifting rope is used, each end of the lifting rope component is hung and buckled on one fixed pulley.
Further, the lifting rope assembly comprises a lifting rope and a plurality of guard plates; the lifting rope is a nylon rope which is connected end to form a closed loop, the nylon rope is sleeved on the two fixed pulleys, the fixed pulleys divide the nylon rope into two single line sections, and the two single line sections are respectively positioned at the front side and the rear side of the fixed pulleys; the guard plates have preset lengths in the front-rear direction, each guard plate is provided with two through holes, each through hole is used for penetrating one single line section of the lifting rope, the guard plates are sequentially arranged along the two single line sections of the lifting rope, and each guard plate is slidably arranged along the lifting rope; the total length of the guard plates in the left-right direction is larger than the width of the bridge precast slab in the left-right direction.
Further, each guard plate includes a cushioning portion and a hard portion; the hard part is made of non-deformable hard materials, the buffer part is made of deformable elastic materials, and when the bridge precast slab is placed on the lifting rope assembly, the buffer part is in contact with the bridge precast slab.
Further, the thickness of each guard plate is uniform in a natural state, the thickness of the cushioning portion of the guard plate gradually increases from front to back, and the thickness of the hard portion of the guard plate gradually decreases from front to back.
Further, the first driving mechanism comprises a first motor, a first gear and a first rack; the first rack is arranged on a single beam, the body of the first motor is arranged above a front supporting leg or a middle supporting leg, and the first gear is fixedly arranged on an output shaft of the first motor and meshed with the first rack.
Further, the rail-mounted transportation device for the bridge precast slabs further comprises two second driving mechanisms, each second driving mechanism comprises two second driving assemblies, the two second driving assemblies are respectively and correspondingly arranged with one end of the rail frame, and each second driving assembly comprises a second rack, a second motor and a second gear; the second rack is arranged on a single beam, the machine body of the second motor is arranged at the end part of a track frame, and the second gear is fixedly arranged on the output shaft of the second motor and meshed with the second rack.
The beneficial effects of the invention are as follows: when the bridge precast slab track type transportation device is used for installing the bridge precast slabs, the carrying trolley is firstly used for carrying the bridge precast slabs to be installed onto the bridge deck, and the front ends of the bridge precast slabs to be installed are hung on the first crown block through the lifting mechanism; the auxiliary supporting leg and the rear supporting leg are in a contracted state, the first driving mechanism on the front supporting leg and the middle supporting leg drives the girder erection machine double girders to move forwards, the first crown block and the second crown block are static relative to the bridge deck, and the auxiliary supporting leg and the rear supporting leg extend downwards to support the girder erection machine double girders until the auxiliary supporting leg moves to the upper part of one pier in front; and then the rear end of the bridge precast slab to be installed is hoisted on a second crown block through a lifting mechanism, and then the first crown block and the second crown block drive the bridge precast slab to move forwards together, and two ends of the bridge precast slab are respectively lapped on two adjacent piers. The front end of the bridge precast slab to be installed is hoisted on the first crown block through the lifting mechanism before the driving girder erection machine double girders move forwards, so that potential safety hazards caused by unstable gravity centers in the process of moving the girder erection machine double girders forwards can be avoided, and the girder erection machine double girders can be moved to a preset position at one time, so that time is saved.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the invention, and that other drawings can be obtained according to these drawings without inventive faculty for a person skilled in the art.
Fig. 1 is a schematic view showing a state in which an auxiliary frame of an embodiment of a rail type transportation apparatus for a prefabricated slab for a bridge of the present invention is moved over one pier in front;
FIG. 2 is a side view of FIG. 1;
FIG. 3 is a front view of FIG. 1;
FIG. 4 is an enlarged view of FIG. 2 at A;
FIG. 5 is a force analysis diagram of the guard plate under the pulling force of the lifting rope in an initial state;
FIG. 6 is a diagram showing the analysis of the forces of a bridge precast slab placed obliquely on a guard plate.
In the figure: 101. bridge piers; 104. a bridge deck; 105. an auxiliary leg; 106. a front leg; 107. middle supporting legs; 108. a rear leg; 109. double beams of beam erecting machine; 110. a first crown block; 111. a second crown block; 112. a track frame; 201. bridge precast slabs; 301. a hoist; 302. a lifting rope assembly; 303. a hanging rope; 304. a guard board; 3051. a buffer section; 3052. a hard portion; 3053. a through hole; 306. a balance plate; 307. and a fixed pulley.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
An embodiment of a track type transportation apparatus for a bridge precast slab according to the present invention, as shown in fig. 1 to 6, is for installing a bridge precast slab 201 between two piers 101. The rail-mounted transportation device for the bridge precast slabs comprises an auxiliary supporting leg 105, a front supporting leg 106, a middle supporting leg 107, a rear supporting leg 108 and a girder erection machine double girder 109. In the initial state, the auxiliary supporting leg 105, the front supporting leg 106, the middle supporting leg 107 and the rear supporting leg 108 are all arranged on the bridge deck 104 after splicing, the front supporting leg 106 and the middle supporting leg 107 are sequentially arranged in the front-back direction, the girder erection machine double beam 109 is arranged above the front supporting leg 106 and the middle supporting leg 107, and the front supporting leg 106 and the middle supporting leg 107 are provided with a first driving mechanism for enabling the girder erection machine double beam 109 to move along the direction where the length of the girder erection machine double beam is located. The auxiliary supporting leg 105 and the rear supporting leg 108 are respectively arranged at the lower sides of the front end and the rear end of the beam erecting machine double beam 109, the auxiliary supporting leg 105 and the rear supporting leg 108 are arranged in a telescopic manner in the up-down direction, the track type transportation device for the bridge precast slab further comprises a lifting mechanism, the lifting mechanism comprises a first crown block 110 and a second crown block 111, the first crown block 110 and the second crown block 111 are sequentially arranged in the front-back direction, the first crown block 110 and the second crown block 111 are slidably arranged on the beam erecting machine double beam 109 in the front-back direction, and lifting mechanisms for lifting the bridge precast slab 201 to be installed are arranged on the first crown block 110 and the second crown block 111.
During construction, the carrying trolley carries the bridge precast slab 201 to be installed onto the bridge deck 104, and enables the front end of the bridge precast slab 201 to be installed to be hoisted on the first crown block 110 through the lifting mechanism; the auxiliary supporting leg 105 and the rear supporting leg 108 are in a contracted state, the first driving mechanism on the front supporting leg 106 and the middle supporting leg 107 drives the girder erection machine double girder 109 to move forwards, and the first crown block 110 and the second crown block 111 are static relative to the bridge deck 104 until the auxiliary supporting leg 105 moves above one bridge pier 101 in front, and the auxiliary supporting leg 105 and the rear supporting leg 108 extend downwards to play a supporting role on the girder erection machine double girder 109; the rear end of the bridge precast slab 201 to be installed is hoisted on the second crown block 111 through a lifting mechanism, then the first crown block 110 and the second crown block 111 drive the bridge precast slab 201 to move forwards together, and two ends of the bridge precast slab 201 are respectively lapped on two adjacent piers 101. Specifically, before the girder erection machine double-girder 109 is driven to move forward, the front end of the bridge precast slab 201 to be installed is hoisted on the first crown block 110 through the lifting mechanism, so that potential safety hazards caused by unstable gravity center in the process of moving the girder erection machine double-girder 109 forward can be avoided, and the girder erection machine double-girder 109 can be moved to a preset position at one time, and time is saved.
In the present embodiment, the girder erection machine double girder 109 includes two single girders extending in the front-rear direction, and the number of the auxiliary leg 105, the front leg 106, the middle leg 107, and the rear leg 108 is two, and each of the auxiliary leg 105, the front leg 106, the middle leg 107, and the rear leg 108 is provided corresponding to one single girder. Two rail brackets 112 extending in the left-right direction are further provided between the two single beams, the first crown block 110 is slidably provided in the left-right direction along one rail bracket 112, and the second crown block 111 is slidably provided in the left-right direction along the other rail bracket 112. Different bridge precast slabs 201 are spliced in sequence through the adjustment of the positions of the first crown block 110 and the second crown block 111 in the left-right direction until a preset number of bridge precast slabs 201 are paved between two adjacent bridge piers 101.
In this embodiment, each lifting mechanism includes two winches 301 and a lifting rope assembly 302, the two winches 301 are respectively disposed on the left and right sides of the first crown block 110 or the second crown block 111, the lower ends of the steel wire ropes on the two winches 301 of the lifting mechanism are commonly connected with a balance plate 306, the balance plate 306 extends along the left and right direction, and fixed pulleys 307 are mounted on the lower parts of the left and right ends of the balance plate 306; the lifting rope assembly 302 is used for supporting the bridge precast slab 201, the lifting rope assembly 302 is provided with two ends, when in use, each end of the lifting rope assembly 302 is hung on one fixed pulley 307, and the hoist 301 lifts the bridge precast slab 201 through the lifting rope assembly 302. The stability is higher than if one end of the conventional sling assembly 302 were merely hung and snapped onto one hanger.
In this embodiment, the sling assembly 302 includes a sling 303 and a plurality of shields 304; the lifting rope 303 is a nylon rope which is connected end to form a closed loop, the nylon rope is sleeved on the two fixed pulleys 307, the fixed pulleys 307 divide the nylon rope into two single line sections, and the two single line sections are respectively positioned on the front side and the rear side of the fixed pulleys 307; the guard plates 304 have a preset length in the front-rear direction, each guard plate 304 is provided with two through holes 3053, each through hole 3053 is used for penetrating one single line section of the lifting rope 303, a plurality of guard plates 304 are sequentially arranged along the two single line sections of the lifting rope 303, and each guard plate 304 is slidably arranged along the lifting rope 303; the total length of the plurality of guard plates 304 in the left-right direction is greater than the width of the bridge precast slab 201 in the left-right direction. When the bridge precast slab 201 is lifted, two ends of the lifting rope 303 respectively pass through the two through holes 3053 on two sides of the precast beam slab, and the guard plates 304 have gravity, so after the two ends of the lifting rope 303 are lifted, the guard plates 304 gather towards the middle part of the lifting rope 303. With the gradual lifting of the ends of the lifting rope 303, the upper surface of the guard plate 304 comes into contact with the lower surface of the bridge girder 201, specifically, if the guard plate 304 is just at the corner of the bridge girder 201, the position of the guard plate 304 is manually adjusted so that the guard plate 304 moves upward. In other embodiments of the invention, the lifting cords 303 may also be steel cords.
In this embodiment, each guard plate 304 includes a cushioning portion 3051 and a hard portion 3052. The hard portion 3052 is a hard material which cannot be deformed, the buffer portion 3051 is an elastic material which can be deformed, when the bridge precast slab 201 is placed on the lifting rope assembly 302, the buffer portion 3051 is in contact with the bridge precast slab 201 to buffer partial stress of the guard plate 304 to a bridge, damage to the bridge precast slab 201 caused by the guard plate 304 is prevented, damage to the guard plate 304 caused by the bridge precast slab 201 is avoided, and service life of the guard plate 304 is prolonged.
In the present embodiment, the thickness of each shield 304 is uniform in a natural state, the thickness of the cushioning portion 3051 of the shield 304 gradually increases from front to back, and the thickness of the hard portion 3052 of the shield 304 gradually decreases from front to back.
When the front end of the bridge precast slab 201 is suspended on the first crown block 110 by the lifting mechanism, the bridge precast support is in an inclined state, and the effect generated at this time is that the guard plate 304 supported at the lower part of the bridge precast slab 201 is inclined, and when the two single line sections of the suspension rope 303 are stressed differently due to the fact that the suspension rope 303 is identical, the lengths of the two single line sections can be adaptively adjusted, so that the forces stressed by the two single line sections of the suspension rope 303 are identical, but when the guard plate 304 is in an inclined state, the angles of the pulling forces of the suspension rope 303 stressed by the front end and the rear end of the guard plate 304 are different, as shown in fig. 6, alpha is the included angle between the single line section at the front side and the guard plate 304, beta is the included angle between the single line section at the rear side and the guard plate 304, and alpha is larger than beta, so that the component force stressed by the front and rear through holes 3053 of the same guard plate 304 along the direction perpendicular to the guard plate 304 is different, that is the component stressed by the front through holes 3053 perpendicular to the guard plate 304 is larger than the component stressed by the back through holes 3053 perpendicular to the guard plate 304. In order to make the forces of the guard plate 304 applied to the bridge precast slab 201 uniform, the force components applied to the front and rear through holes 3053 along the direction perpendicular to the guard plate 304 should be the same as much as possible, that is, the α and β in fig. 6 are similar, at this time, the thickness of the buffer portion 3051 gradually increases from front to back, and the thickness of the hard portion 3052 of the guard plate 304 gradually decreases from front to back, so that the deformation amount of the front and rear positions of the buffer portion 3051 is different, and the deformation amount of the rear side of the buffer portion 3051 is greater than the deformation amount of the front side, so as to offset the downward force applied to the guard plate 304 by the bridge precast slab 201 along the direction perpendicular to the guard plate 304, and further the force components applied to the front and rear through holes 3053 along the direction perpendicular to the guard plate 304 tend to be the same, that is, the α and β are as close as much as possible.
In this embodiment, the first drive mechanism includes a first rack, a first motor, and a first gear; the first rack is provided on a single beam, the body of the first motor is mounted above a front leg 106 or a middle leg 107, and the first gear is fixedly mounted to the output shaft of the first motor and engaged with the first rack (the first driving mechanism is not shown in the drawing).
When the beam erecting machine double beam 109 needs to be driven to move forwards, the first motor drives the first gear to rotate, and the first gear drives the beam erecting machine double beam 109 to move forwards through the first rack.
In this embodiment, the track-type transportation device for the bridge precast slab further includes two second driving mechanisms, each second driving mechanism includes two second driving assemblies, the two second driving assemblies are respectively disposed corresponding to one end of the track frame 112, and each second driving assembly includes a second rack, a second motor and a second gear; the second rack is provided on one single beam, the body of the second motor is mounted on an end of one rail frame 112, and the second gear is fixedly mounted on an output shaft of the second motor and is engaged with the second rack (the second driving mechanism is not shown in the drawing).
When the double beam 109 of the beam erecting machine moves forward, each second motor drives a corresponding second gear to rotate, and the second gears move backward along the second racks and are stationary relative to the bridge deck 104. When the bridge precast slab 201 is driven to move to the preset position, the second motor starts to drive the second gear to move forward along the second rack, and then drives the bridge precast slab 201 to move to the specified position.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.

Claims (3)

1. A track type transportation device for bridge precast slabs is characterized in that a bridge precast slab is installed between two piers; the rail-mounted transportation device for the bridge precast slab comprises an auxiliary supporting leg, a front supporting leg, a middle supporting leg, a rear supporting leg and a girder erection machine double girder; the auxiliary support legs, the front support legs, the middle support legs and the rear support legs are all arranged on the bridge deck after the splicing is completed in an initial state, the front support legs and the middle support legs are sequentially arranged in the front-back direction, the girder erection machine double beams are arranged above the front support legs and the middle support legs, and the front support legs and the middle support legs are provided with first driving mechanisms for enabling the girder erection machine double beams to move along the direction where the lengths of the girder erection machine double beams are; the auxiliary supporting leg and the rear supporting leg are respectively arranged at the lower sides of the front end and the rear end of the double beam of the beam erecting machine, and the auxiliary supporting leg and the rear supporting leg are arranged in a telescopic way in the up-down direction, and the bridge precast slab track type conveying device is characterized by further comprising a lifting mechanism, wherein the lifting mechanism comprises a first crown block and a second crown block, the first crown block and the second crown block are sequentially arranged in the front-rear direction, the first crown block and the second crown block are slidably arranged on the double beam of the beam erecting machine in the front-rear direction, and lifting mechanisms for lifting a bridge precast slab to be installed are arranged on the first crown block and the second crown block;
When in construction, the carrying trolley is used for carrying the bridge precast slabs to be installed onto the bridge deck, and the front ends of the bridge precast slabs to be installed are hung on the first crown block through the lifting mechanism; the auxiliary supporting leg and the rear supporting leg are in a contracted state, the first driving mechanism on the front supporting leg and the middle supporting leg drives the girder erection machine double girders to move forwards, the first crown block and the second crown block are static relative to the bridge deck, and the auxiliary supporting leg and the rear supporting leg extend downwards to support the girder erection machine double girders until the auxiliary supporting leg moves to the upper part of one pier in front; then, the rear end of the bridge precast slab to be installed is hoisted on a second crown block through a lifting mechanism, then the first crown block and the second crown block drive the bridge precast slab to move forwards together, and two ends of the bridge precast slab are respectively lapped on two adjacent piers;
the beam erecting machine double beams comprise two single beams extending along the front-back direction, the number of the auxiliary supporting legs, the front supporting legs, the middle supporting legs and the rear supporting legs is two, and each auxiliary supporting leg, each front supporting leg, each middle supporting leg and each rear supporting leg are arranged corresponding to one single beam; two track frames extending in the left-right direction are further arranged between the two single beams, the first trolley is slidably arranged in the left-right direction along one track frame, and the second trolley is slidably arranged in the left-right direction along the other track frame;
Each lifting mechanism comprises two windlass and a lifting rope component, the two windlass are respectively arranged at the left side and the right side of the first crown block or the second crown block, the lower ends of the steel wire ropes on the two windlass of the lifting mechanism are commonly connected with a balance plate, the balance plate extends along the left-right direction, and fixed pulleys are arranged at the lower parts of the left end and the right end of the balance plate; the lifting rope component is used for supporting the bridge precast slab, and is provided with two end parts, and when the lifting rope is used, each end of the lifting rope component is hung and buckled on a fixed pulley;
The lifting rope component comprises a lifting rope and a plurality of guard plates; the lifting rope is a nylon rope which is connected end to form a closed loop, the nylon rope is sleeved on the two fixed pulleys, the fixed pulleys divide the nylon rope into two single line sections, and the two single line sections are respectively positioned at the front side and the rear side of the fixed pulleys; the guard plates have preset lengths in the front-rear direction, each guard plate is provided with two through holes, each through hole is used for penetrating one single line section of the lifting rope, the guard plates are sequentially arranged along the two single line sections of the lifting rope, and each guard plate is slidably arranged along the lifting rope; the total length of the guard plates in the left-right direction is larger than the width of the bridge precast slab in the left-right direction;
Each guard plate comprises a buffer part and a hard part; the hard part is made of non-deformable hard material, the buffer part is made of deformable elastic material, and when the bridge precast slab is placed on the lifting rope assembly, the buffer part is contacted with the bridge precast slab;
The thickness of each guard plate is uniform in a natural state, the thickness of the buffer portion of the guard plate is gradually increased from front to back, and the thickness of the hard portion of the guard plate is gradually decreased from front to back.
2. The bridge precast slab track type transportation apparatus of claim 1, wherein: the first driving mechanism comprises a first rack, a first motor and a first gear; the first rack is arranged on a single beam, the body of the first motor is arranged above a front supporting leg or a middle supporting leg, and the first gear is fixedly arranged on an output shaft of the first motor and meshed with the first rack.
3. The bridge precast slab track type transportation apparatus of claim 1, wherein: the device also comprises two second driving mechanisms, each second driving mechanism comprises two second driving components, the two second driving components are respectively and correspondingly arranged with one end of the track frame, and each second driving component comprises a second rack, a second motor and a second gear; the second rack is arranged on a single beam, the machine body of the second motor is arranged at the end part of a track frame, and the second gear is fixedly arranged on the output shaft of the second motor and meshed with the second rack.
CN202410888521.9A 2024-07-04 2024-07-04 Rail type transportation device for bridge precast slabs Active CN118405594B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202410888521.9A CN118405594B (en) 2024-07-04 2024-07-04 Rail type transportation device for bridge precast slabs

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202410888521.9A CN118405594B (en) 2024-07-04 2024-07-04 Rail type transportation device for bridge precast slabs

Publications (2)

Publication Number Publication Date
CN118405594A CN118405594A (en) 2024-07-30
CN118405594B true CN118405594B (en) 2024-08-30

Family

ID=91997850

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202410888521.9A Active CN118405594B (en) 2024-07-04 2024-07-04 Rail type transportation device for bridge precast slabs

Country Status (1)

Country Link
CN (1) CN118405594B (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110498347A (en) * 2018-05-20 2019-11-26 王燏斌 A kind of constructing device and its construction method for assembled architecture
CN111409185A (en) * 2020-04-23 2020-07-14 赵红玲 Movable integrated device for producing precast concrete plates and production process

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004175545A (en) * 2002-11-28 2004-06-24 Taisei Corp Bridge crane
CN215626241U (en) * 2021-10-14 2022-01-25 河南省矿山起重机有限公司 Three-trolley two-beam six-rail casting crane
CN113818478B (en) * 2021-11-10 2022-11-29 中交一公局集团有限公司 Overweight prefabricated pipe gallery installation system and construction method thereof

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110498347A (en) * 2018-05-20 2019-11-26 王燏斌 A kind of constructing device and its construction method for assembled architecture
CN111409185A (en) * 2020-04-23 2020-07-14 赵红玲 Movable integrated device for producing precast concrete plates and production process

Also Published As

Publication number Publication date
CN118405594A (en) 2024-07-30

Similar Documents

Publication Publication Date Title
CN1236992C (en) Elevator system
US3759349A (en) Elevator system with temporary hoistway structure and method for use thereof
CN101559905A (en) Deck unit erection gantry
CN109183620A (en) Telescoping bracket, steel box-girder hanging device and hanging method
JPH10292317A (en) Installation method and device of bridge girder member
CN118405594B (en) Rail type transportation device for bridge precast slabs
KR101373098B1 (en) Construction appratus for composit truss free cantilever bridge and construction method of composit truss free cantilever bridge using the same
CN109112963B (en) Bridge hoisting equipment
CN111252683A (en) Bridge deck crane and application method thereof applied to bridge dismantling
CN110697571A (en) Single-guide-beam descending type beam feeding device and beam feeding method thereof
CN113235460B (en) Prefabricated segment swinging method for bridge cantilever assembly
CN212426804U (en) Hang basket moving system
CN212426803U (en) Portable bailey frame cradle
CN212687392U (en) Cable crane hoisting device for bridge erection
CN210973610U (en) Single nose girder descending type beam feeding device
CN115676683A (en) Vehicle lifting platform for bridge floor construction
CN111453630B (en) Bridge deck crane and use method thereof
CN208995927U (en) Telescoping bracket and steel box-girder hanging device
CN112030786A (en) Portable bailey frame cradle
CN218058285U (en) Liftable support for construction
CN220241887U (en) Precast beam stretch-draw equipment operation frame
CN218509064U (en) Portable integral steel member hoisting platform
CN219751722U (en) Headroom-saving lifting device
CN218780010U (en) Carbon fiber plate prestress tensioning auxiliary device for reinforcing concrete beam plate
CN110055904B (en) Bridge construction device and bridge construction method

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant