CN117845768A - Steel truss bridge construction installation system and construction method - Google Patents
Steel truss bridge construction installation system and construction method Download PDFInfo
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- CN117845768A CN117845768A CN202410120512.5A CN202410120512A CN117845768A CN 117845768 A CN117845768 A CN 117845768A CN 202410120512 A CN202410120512 A CN 202410120512A CN 117845768 A CN117845768 A CN 117845768A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 105
- 239000010959 steel Substances 0.000 title claims abstract description 105
- 238000010276 construction Methods 0.000 title claims abstract description 51
- 238000009434 installation Methods 0.000 title claims abstract description 39
- 230000007246 mechanism Effects 0.000 claims abstract description 4
- 238000010008 shearing Methods 0.000 claims abstract description 3
- 210000001503 joint Anatomy 0.000 claims abstract 2
- 239000003921 oil Substances 0.000 claims description 48
- 238000000034 method Methods 0.000 claims description 8
- 230000005540 biological transmission Effects 0.000 claims description 7
- 239000000346 nonvolatile oil Substances 0.000 claims description 7
- 238000010586 diagram Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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Abstract
The invention relates to the technical field of steel truss girder installation construction, and provides a steel truss bridge construction installation system which is used for installing a steel truss onto piers, and comprises hoisting equipment, temporary buttresses, movable lifting supports, movable adjusting frames and limiting supports, wherein two rows of piers are arranged across a river, a plurality of temporary buttresses are arranged between two piers in the same row at intervals, the movable lifting supports are arranged between the two rows of temporary buttresses, lifting of the movable lifting supports is realized through a fork shearing mechanism, a plurality of movable adjusting frames are respectively movably arranged on two sides of the upper end of each movable lifting support, the limiting supports are arranged on one side of the upper end of each temporary buttress, which is far away from the movable lifting supports, and the limiting supports are in butt joint with the steel truss through up-down movement of the limiting frames. According to the invention, the quick positioning is realized by moving the lifting support, the movable adjusting frame, the temporary buttress and the limiting support, so that the positioning operation is simplified, and the construction efficiency is improved.
Description
Technical Field
The invention relates to the technical field of steel truss girder installation and construction, and particularly discloses a steel truss bridge construction and installation system and a construction method.
Background
Some steel truss bridge constructions adopt construction schemes of steel structure assembly and hoisting, and the steel truss mainly comprises a main truss, a main truss coupling system and the like, wherein the main truss comprises: upper and lower chords and web members, etc., the main truss attachment includes: cross beams, cross braces, etc.; the steel truss sectional hoisting process sequence is as follows: hoisting, aligning, temporarily solidifying, adjusting, positioning and welding, adjusting, formally welding and folding, and detecting flaw.
The steel truss is lifted in place by the aid of lifting equipment, connection operation is carried out, a steel truss installation operation platform adopts a crane to add a hanging basket, constructors stand in the hanging basket to assist steel truss adjustment, the steel truss is not easy to position in actual construction in the construction mode, the positioning mode is complex, the lifting position of the lifting equipment needs to be accurately adjusted, the next section of steel truss can be lifted continuously after the section of steel truss is lifted in place and installed, a large amount of time and labor are needed in the lifting equipment positioning adjustment process, the construction period is prolonged, the overall construction efficiency is reduced, the safety risk of high-altitude operation is high, and construction operation is inconvenient.
Disclosure of Invention
The invention aims to provide a steel truss bridge construction installation system which aims to solve the problems in the background technology.
In order to achieve the above purpose, the present invention provides the following technical solutions:
in a first aspect, the application provides a steel truss bridge construction installation system, adopts following technical scheme:
a steel truss bridge construction installing the system for install the pier with steel truss, including lifting device, interim buttress, still including removing lifting support, remove the adjustment frame, spacing support, cross the river and set up two rows of piers, be located the interval between two piers of same row and be provided with a plurality of interim buttress, be provided with between two rows of interim buttresses and remove lifting support, remove lifting support and realize going up and down through cutting fork mechanism, remove the both sides of lifting support upper end and remove the adjustment frame respectively movably, remove the adjustment frame and include and indulge moving the hydro-cylinder, vertical hydro-cylinder, rotating motor, the support crossbearer, expansion plate base, expansion plate and fixed hydro-cylinder, the telescopic end of indulging moving the hydro-cylinder is installed rotating motor, the fixed end and the output shaft fixed connection of rotating motor of vertical hydro-cylinder, expansion plate and expansion plate base swing joint, the fixed hydro-cylinder is installed to one side of vertical hydro-cylinder, the roll of vertical hydro-cylinder is connected with the support crossbearer, the piston rod of fixed hydro-cylinder is connected with the support, interim buttress upper end is provided with a plurality of support hydro-cylinder, one side that removes lifting support is kept away from to remove lifting support is provided with spacing support, spacing support passes through spacing and reciprocates with steel truss butt.
Further, remove lift support and include scissors fork lift, side shift rack and side shift guide rail, scissors fork lift includes supporting platform, and supporting platform both sides are fixed with side shift rack respectively along steel truss length direction, are provided with a plurality of side shift guide rails along its length direction on the supporting platform, and scissors fork lift lower extreme is provided with the movable pulley.
Further, remove the adjustment frame still and include gyro wheel, flexible rack, flexible motor and expansion gear, the both sides of expansion plate base all are provided with the gyro wheel track, a plurality of gyro wheels are installed to the inside both sides of expansion plate, the gyro wheel rolls in the gyro wheel track of expansion plate base, flexible rack is installed to the gyro wheel track lower part of at least one side of expansion plate base, flexible motor is installed to the expansion plate inboard, flexible motor's output shaft and expansion gear fixed connection, expansion gear is connected with flexible rack meshing transmission, the side shift pulley is installed to the bottom of expansion plate base, side shift pulley roll and set up on the side shift guide rail.
Further, remove the adjustment frame still including side motor support, side motor and side gear, the one end that the expansion plate base is close to the side rack is equipped with the mounting groove, and the mounting groove internal fixation has side motor support, and side motor support internal fixation has side motor, and side motor's output shaft and side gear fixed connection, side gear and side rack meshing transmission are connected.
Further, remove the adjustment frame still including side storehouse, prop up the guide seat and push away the guide rail, the one end of the inside bottom surface in storehouse is moved and is provided with the push away the guide rail, push away the guide rail and move the storehouse other end to side, push away and slide on the guide rail and be provided with prop up the guide seat, prop up the guide seat and indulge the telescopic end fixed connection who moves the hydro-cylinder, the other end of the inside bottom surface in storehouse is moved and is provided with fixed hydro-cylinder, it fixes the side in storehouse to indulge the hydro-cylinder, it is pegged graft with side in storehouse to indulge the piston rod of moving the hydro-cylinder, prop up the guide seat and include perpendicular setting up of support plate and bottom support plate, it is fixed on the perpendicular support plate of support guide seat to indulge the piston rod of moving the hydro-cylinder, the motor is installed on the bottom support plate of support guide seat.
Further, the limit bracket comprises a guide rod, a support connecting plate, a limit plate frame and a limit oil cylinder, wherein the guide rod is vertically arranged, the support connecting plate is in sliding connection with the guide rod, the middle part of one side of the support connecting plate is provided with the limit oil cylinder, the piston end of the limit oil cylinder is connected with the limit plate frame, and two ends of the limit plate frame are respectively connected with two ends of the support connecting plate through telescopic cylinders.
Further, two connecting transverse plates are arranged up and down on the limiting support, the two connecting transverse plates are connected through a guide rod, and the motor screw rod structure is arranged between the two connecting transverse plates to drive the support connecting plates to move up and down, or the chain structure is arranged between the two connecting transverse plates to drive the support connecting plates to move up and down.
In a second aspect, the present application provides a construction method of a steel truss bridge construction installation system, which is used for the construction method of the steel truss bridge construction installation system, and includes the following steps:
s1: installing a movable lifting support, a movable adjusting frame, temporary buttresses and a limiting support, installing the movable adjusting frame on the movable lifting support, arranging a plurality of temporary buttresses at intervals between two piers positioned in the same row, installing the limiting support on the temporary buttresses, and pushing the movable lifting support between the two rows of temporary buttresses;
s2: the height of the supporting platform is adjusted to a proper position, the movable adjusting frame is adjusted to a proper position, the supporting oil cylinder is adjusted to enable the supporting oil cylinder to extend to be slightly higher than the embedded steel plate, the heights of the vertical oil cylinder and the fixed oil cylinder are adjusted to enable the supporting transverse frame and the roller frame to be level with the piston rod end of the supporting oil cylinder, the limiting lifting motor I is driven, the limiting plate frame is adjusted to the mounting position of the lower chord member section, and the limiting oil cylinder is driven to extend the limiting plate frame to a proper position;
s3: the steel trusses are provided with two lower chord sections which are respectively arranged at the ends of the two steel trusses, the lower chord sections are hoisted to two supporting crossbearers of the vertical cylinders which are close to the temporary buttresses in the same row by hoisting equipment, a rotating motor is driven to adjust the placing angle of the lower chord sections, a lateral motor is driven to move a lateral shifting gear along a lateral shifting rack, the position of a telescopic plate base is adjusted, one end of the lower chord section is aligned with the mounting position of a pier, a telescopic plate is driven to move towards the temporary buttresses, a longitudinal shifting cylinder is driven to make pushing movement to convey the lower chord section to the supporting cylinders until the side surfaces of the lower chord section are abutted against a limiting plate frame, and the supporting cylinders are retracted to be flush with pre-buried steel plates, so that one end of the lower chord section is positioned at the mounting position of a pier, and the pier is fixedly connected with the lower chord section;
s4: moving the expansion plate to a direction away from the temporary buttress, and driving the side-moving motor to move the moving adjusting frames at two sides to the end parts of the lower chord sections, which are close to the bridge piers, respectively;
s5: installing a middle cross beam and an end cross beam which are positioned between two steel trusses, hoisting the end cross beam to the movable adjusting frames at the two sides by hoisting equipment, driving a vertical oil cylinder and a rotary motor to adjust the placing height and the placing angle of the end cross beam, adjusting the position of a telescopic plate base, connecting the end cross beam with lower chord sections at the two sides, adjusting the position of the movable adjusting frames, and installing the middle cross beam in the same way;
s6: the scissor fork lifter is lifted to approach the mounting position of the web member, the movable adjusting frames at the two sides are respectively moved between the mounting positions of the web member by the driving side motor, the expansion plate is moved to approach the direction of the lower chord member, and the corresponding limiting lifting motor is driven to lift the limiting plate frame to a proper position;
s7: the web members at the end parts of the steel trusses are pre-connected with the upper chord sections at the end parts to serve as combined rod sections, the combined rod sections are installed, the combined rod sections are hoisted to a movable adjusting frame by hoisting equipment, a rotating motor is driven to adjust the placement angle of the combined rod sections, a telescopic plate base and a telescopic plate are adjusted, a longitudinal moving oil cylinder is operated to correspond the combined rod sections to the lower chord sections, a limiting plate frame is used for limiting the combined rod sections, and the combined rod sections are fixedly connected with the lower chord sections;
s8: moving the expansion plate to a direction away from the lower chord section, lifting the scissor fork lifter to approach to the mounting position of the cross brace, and driving the side-moving motor to move the moving adjusting frames at two sides to the end parts of the upper chord section respectively;
s9: installing a cross brace between the combined rod sections, hoisting the cross brace between the combined rod sections onto a movable adjusting frame by using hoisting equipment, driving a vertical oil cylinder and a rotary motor to adjust the placing height and the placing angle of the cross brace between the combined rod sections, adjusting a telescopic plate base, and fixedly connecting the cross brace between the combined rod sections with the combined rod sections;
s10: pushing the movable lifting support, adjusting the movable adjusting frame and the limiting support, and continuously installing other lower chord members, web members, upper chord members, middle cross beams and cross braces.
Compared with the prior art, the invention has the following beneficial effects:
1. according to the steel truss bridge construction installation system provided by the invention, the hoisting equipment hoists the segmented steel truss structure to the movable adjusting frame, the segmented steel truss is matched with the movable lifting support, the movable adjusting frame, the temporary buttress and the limiting support to realize quick adjustment and positioning, so that the positioning operation is simplified, the hoisting position is not required to be accurately adjusted for a plurality of times during the hoisting operation of the hoisting equipment, and the hoisting equipment can prepare the hoisting of the next segmented steel truss structure during the operation of the movable lifting support, the movable adjusting frame, the temporary buttress and the limiting support, so that the positioning time is shortened, the construction process is accelerated, the working procedures of high-altitude operation of constructors are reduced, the labor intensity is reduced, and the construction efficiency is improved.
2. According to the steel truss bridge construction installation system, the segmented steel truss can be installed more conveniently by pushing the movable lifting support, the movable adjusting frame can move the segmented steel truss along the length direction of the steel truss through the side-moving rack and the side-moving gear, pushing and conveying of the segmented steel truss along the width direction of the steel truss are achieved through the longitudinal moving oil cylinder, the vertical oil cylinder, the fixed oil cylinder and the expansion plate, the limiting plate frame limits the width direction of the steel truss, the steel truss is supported through the vertical oil cylinder, the fixed oil cylinder and the supporting oil cylinder, and the steel truss is positioned and installed more accurately, conveniently and rapidly through cooperation of all structures.
Drawings
Fig. 1 is a schematic structural diagram of a steel truss bridge construction installation system according to a first embodiment of the present invention;
fig. 2 is a schematic structural view of a mobile lifting support, a mobile adjusting frame and a temporary buttress of a steel truss bridge construction installation system according to a first embodiment of the present invention;
fig. 3 is a schematic structural view of a mobile adjusting frame of a steel truss bridge construction installation system according to a first embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a connection state of a movable lifting support and a movable adjusting frame according to a first embodiment of the present invention;
FIG. 5 is an enlarged view of the invention at M of FIG. 4;
FIG. 6 is an enlarged view of the invention at N of FIG. 3;
fig. 7 is a schematic structural diagram of a connection state between a base of a expansion plate and the expansion plate of a steel truss bridge construction installation system according to the first embodiment of the present invention;
fig. 8 is a schematic structural view of a base and an exploded status of a expansion plate of a steel truss bridge construction installation system according to the first embodiment of the present invention;
FIG. 9 is an enlarged view of the invention at Q of FIG. 8;
fig. 10 is a schematic structural view of a limiting bracket of a steel truss bridge construction installation system according to the first embodiment of the present invention;
fig. 11 is a schematic diagram showing an exploded state of a lifting nut and a limiting cylinder of a steel truss bridge construction installation system according to the first embodiment of the present invention;
fig. 12 is a schematic structural diagram of a limiting bracket of a steel truss bridge construction installation system according to a second embodiment of the present invention;
fig. 13 is an enlarged view of the invention at R of fig. 12.
In the figure: 1. moving the lifting support; 2. moving the adjusting frame; 3. temporary buttresses; 4. a limit bracket; 5. a steel truss; 6. bridge piers; 11. a scissor fork lift; 12. a side shift rack; 13. a side shift guide rail; 21. a longitudinally moving oil cylinder; 22. a vertical oil cylinder; 23. a rotary motor; 24. a supporting cross frame; 25. a side moving bin; 26. a support guide seat; 27. pushing the guide rail; 28. a side-shifting motor support; 29. a side-drive motor; 31. a support cylinder; 41. a screw; 42. a guide rod; 43. lifting the nut; 44. a sliding sleeve; 45. a support connecting plate; 46. limiting plate frame; 47. a limit oil cylinder; 48. a first limit lifting motor; 49. a connecting transverse plate; 51. a lower chord section; 52. a web member; 53. an upper chord section; 54. a middle cross beam; 55. an end beam; 56. a cross brace; 61. embedding a steel plate; 210. a side shift gear; 211. a telescoping plate base; 212. a telescoping plate; 213. a roller; 214. a telescopic rack; 215. a telescopic motor; 216. a telescopic gear; 217. fixing an oil cylinder; 218. a roller frame; 111. a support platform; 410. a telescopic cylinder; 411. a fixing plate; 412. a second limit lifting motor; 413. a drive sprocket; 414. a driven sprocket; 415. a chain; 416. a fixing member; 431. a front support plate; 461. and a rear support.
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.
In the following description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "inner", "outer", and the like indicate an orientation or a positional relationship based on that shown in the drawings, and are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements to be referred to must have a specific orientation or be constructed and operated in a specific orientation. The term "connected" merely means a connection between devices and is not of special significance.
In addition, the technical fields and the mounting modes in the embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.
First embodiment: referring to fig. 1-11, a steel truss bridge construction installation system is used for installing a steel truss 5 on a pier 6, and comprises hoisting equipment, temporary piers 3, a movable lifting support 1, a movable adjusting frame 2 and a limiting support 4, wherein two rows of piers 6 are arranged across a river channel, a plurality of temporary piers 3 are arranged between the two piers 6 in the same row at intervals, a movable lifting support 1 is arranged between the two rows of temporary piers 3, the movable lifting support 1 realizes lifting through a shearing mechanism, a plurality of movable adjusting frames 2 are movably arranged on two sides of the upper end of the movable lifting support 1 respectively, the movable adjusting frames 2 comprise a longitudinal moving cylinder 21, a vertical cylinder 22, a rotary motor 23, a supporting transverse frame 24, a telescopic plate base 211, a telescopic plate 212 and a fixed cylinder 217, the telescopic end of the longitudinal moving cylinder 21 is provided with the rotary motor 23, the fixed end of the vertical cylinder 22 is fixedly connected with an output shaft of the rotary motor 23, the telescopic plate 212 is movably connected with the telescopic plate base 211, one side of the vertical cylinder 22 is provided with a supporting transverse frame 24, the fixed cylinder 217 is connected with a plurality of piston rods 218 of the piston rods of the fixed cylinder 22, the fixed cylinder 22 is connected with the upper side of the fixed cylinder 22, and the fixed cylinder 4 is provided with a plurality of the roller frames 4, and the fixed cylinder 4 is arranged on the side of the fixed cylinder 4 and is far away from the side of the fixed cylinder 4, and is far from the side of the fixed cylinder 3, and is far from the fixed cylinder 4, and is provided with the roller frame.
The steel truss 5 comprises a lower chord member section 51, the lower chord member section 51 is placed on the supporting transverse frame 24 and the roller frame 218 through hoisting equipment, the lower chord member section 51 positioned at the end part of the steel truss 5 is conveyed to the temporary buttress 3 and the pier 6 through the movable adjusting frame 2, the pier 6 is provided with an embedded steel plate 61, one end of the lower chord member section 51 positioned at the end part of the steel truss 5 is fixedly connected with the embedded steel plate 61, and the other end of the lower chord member section 51 is placed on the temporary buttress 3.
The movable lifting support 1 comprises a scissor fork lifter 11, side-moving racks 12 and side-moving guide rails 13, the scissor fork lifter 11 comprises a support platform 111, the side-moving racks 12 are respectively fixed on two sides of the support platform 111 along the length direction of the steel truss 5, a plurality of side-moving guide rails 13 are arranged on the upper surface of the support platform 111 along the length direction of the support platform 111, and movable pulleys are arranged at the lower end of the scissor fork lifter 11.
The movable adjusting frame 2 further comprises a side moving bin 25, a supporting seat 26, a pushing guide rail 27, a side moving motor support 28, a side moving motor 29 and a side moving gear 210, wherein the pushing guide rail 27 is arranged at one end of the bottom surface inside the side moving bin 25, the pushing guide rail 27 extends towards the other end of the side moving bin 25, the supporting seat 26 is arranged on the pushing guide rail 27 in a sliding mode, a fixed oil cylinder 217 is arranged at the other end of the bottom surface inside the side moving bin 25, a cylinder body of the longitudinal moving oil cylinder 21 is fixed on the side surface of the side moving bin 25, a piston rod of the longitudinal moving oil cylinder 21 is spliced with the side moving bin 25, the supporting seat 26 is L-shaped, the supporting seat 26 comprises a vertical supporting plate and a bottom supporting plate which are mutually perpendicular, the piston rod of the longitudinal moving oil cylinder 21 penetrates through the side moving bin 25 to be fixed on the vertical supporting plate of the supporting seat 26, and the rotating motor 23 is arranged on the bottom supporting plate of the supporting seat 26.
The movable adjusting frame 2 further comprises a side-moving motor support 28, a side-moving motor 29, a side-moving gear 210, rollers 213, a telescopic rack 214, a telescopic motor 215 and a telescopic gear 216, wherein roller tracks are arranged on two sides of the telescopic plate base 211, a plurality of rollers 213 are arranged on two sides of the telescopic plate 212, the rollers 213 roll in the roller tracks of the telescopic plate base 211, the telescopic rack 214 is arranged on the lower portion of the roller track on at least one side of the telescopic plate base 211, the telescopic motor 215 is arranged on the inner side of the telescopic plate 212, an output shaft of the telescopic motor 215 is fixedly connected with the telescopic gear 216, the telescopic gear 216 is in meshed transmission connection with the telescopic rack 214, a side-moving pulley is arranged at the bottom of the telescopic plate base 211, the side-moving pulley is arranged on the side-moving guide rail 13 in a rolling mode, an installation groove is formed in one end, close to the side-moving rack 12, of the telescopic plate base 211 is fixedly provided with the side-moving motor support 28 in the installation groove, the side-moving motor 29 is fixedly arranged in the side-moving motor support 28, and the output shaft of the side-moving motor 29 is fixedly connected with the side-moving gear 210, and the side-moving pulley 210 is in meshed transmission connection with the side-moving rack 12.
The expansion plate 212 can move on the expansion plate base 211, the side shift gear 210 drives the movable adjusting frame 2 to move along the side shift rack 12, the side shift pulley moves along the side shift guide rail 13, the vertical shift cylinder 21 pushes the supporting seat 26 to move along the pushing guide rail 27, the rotating motor 23 can enable the vertical cylinder 22 to rotate, the vertical cylinder 22 drives the supporting transverse frame 24 to rotate, when all components of the steel truss 5 are placed on the supporting transverse frame 24 and the roller frame 218, the rotating motor 23 can adjust the placing angle, the roller frame 218 can reduce friction force with all the components of the steel truss 5, the vertical cylinder 22 can adjust the placing height, the supporting transverse frame 24 and the roller frame 218 are the same in height initially, the vertical shift cylinder 21 pushes the supporting seat 26 to move towards the fixed cylinder 217, then the vertical cylinder 22 enables the supporting transverse frame 24 to descend, the piston rod of the vertical shift cylinder 21 is retracted, the supporting transverse frame 24 is lifted again to prop all the components of the steel truss 5, the piston rod of the vertical shift cylinder 21 is pushed out, all the components of the steel truss 5 are pushed to move along the width direction of the steel truss 5, and the actions are repeated, namely, the temporary components of the steel truss 5 are conveyed onto the roller frame 218, and the truss 5 is conveyed to the roller frame 5.
The limiting bracket 4 comprises a screw 41, a guide rod 42, a lifting nut 43, a sliding sleeve 44, a supporting plate 45, a limiting plate frame 46, a limiting oil cylinder 47, a limiting lifting motor 48 and a connecting transverse plate 49, wherein two connecting transverse plates 49 are arranged up and down, the connecting transverse plate 49 at the lower part is fixed on the temporary support pier 3, the screw 41 and the two guide rods 42 are arranged between the two connecting transverse plates 49, the limiting lifting motor 48 is fixed on the upper connecting transverse plate 49, an output shaft of the limiting lifting motor 48 is fixedly connected with the screw 41, the two guide rods 42 are positioned on two sides of the screw 41, the lifting nut 43 is connected with the screw 41 in a threaded manner, the sliding sleeve 44 is sleeved on the guide rod 42, the supporting plate 45 is connected with the lifting nut 43 and the sliding sleeve 44 and extends towards two ends, a front support plate 431 is fixed in the middle of one side of the supporting plate 45, a cylinder body of the limiting oil cylinder 47 is fixedly connected with the front support plate 431, a piston rod of the limiting oil cylinder 47 is fixedly connected with the limiting plate frame 46, the limiting plate frame 46 is used for pushing each part of the steel 5 onto the temporary support pier 3, the side of the steel 5 is limited, two ends of the limiting plate 46 are respectively fixed with a rear support bracket 461, and a telescopic support 461 is arranged on the rear support seat 410.
The steel truss 5 further comprises web members 52, an upper chord member section 53, a middle cross beam 54, end cross beams 55 and cross braces 56, the lower parts of the web members 52 are arranged on the lower chord member sections 51, the upper ends of the web members 52 are connected with the upper chord member sections 53, the lower chord member sections 51 on two sides of the end portions of the steel truss 5 are connected through the middle cross beam 54 and the end cross beams 55, the lower chord member sections 51 on two sides of the middle portion of the steel truss 5 are connected through the middle cross beam 54, the web members 52 on two sides of the steel truss 5 and the upper chord member sections 53 are connected through the cross braces 56, a plurality of middle cross beams 54 are evenly arranged, two end cross beams 55 are respectively arranged on two end portions of the steel truss 5, and the lower chord member sections 51, the web members 52, the upper chord member sections 53, the middle cross beams 54, the end cross beams 55 and the cross braces 56 are connected in a welding or bolt mode.
The application provides a construction method for a steel truss bridge construction installation system, which is applied to the steel truss bridge construction installation system and comprises the following steps:
s1: the method comprises the steps of installing a movable lifting support 1, a movable adjusting frame 2, temporary piers 3 and limiting supports 4, installing the movable adjusting frame 2 on the movable lifting support 1, arranging a plurality of temporary piers 3 at intervals between two piers 6 positioned in the same row, installing the limiting supports 4 on the temporary piers 3, and pushing the movable lifting support 1 between the two rows of temporary piers 3;
s2: the height of the supporting platform 111 is adjusted to a proper position, the movable adjusting frame 2 is adjusted to a proper position, the supporting oil cylinder 31 is adjusted to enable the supporting oil cylinder 31 to be slightly higher than the embedded steel plate 61 after extending out, the heights of the vertical oil cylinder 22 and the fixed oil cylinder 217 are adjusted to enable the supporting transverse frame 24 and the roller frame 218 to be level with the piston rod end of the supporting oil cylinder 31, the limiting lifting motor I48 is driven, the limiting plate frame 46 is adjusted to the mounting position of the lower chord section 51, and the limiting oil cylinder 47 is driven to enable the limiting plate frame 46 to extend out to a proper position;
s3: the steel truss 5 is provided with two lower chord sections 51 which are respectively arranged at the end parts of the two steel trusses 5, the hoisting equipment hoists the lower chord sections 51 to the supporting crossbearers 24 of the two vertical cylinders 22 which are close to the temporary piers 3 in the same row, the rotating motor 23 is driven to adjust the placement angle of the lower chord sections 51, so that the angle of the lower chord sections 51 is consistent with the installed angle, the side-drive motor 29 drives the side-shift gear 210 to move along the side-shift rack 12, the position of the expansion plate base 211 is adjusted, one end of the lower chord sections 51 at the end parts of the steel truss 5 is aligned with the installation position of the bridge pier 6, the expansion plate 212 is moved towards the direction of the temporary piers 3, the longitudinal moving cylinder 21 is driven to make pushing movement to transmit the lower chord sections 51 to the supporting cylinders 31 until the side surfaces of the lower chord sections 51 are abutted with the limiting plate frames 46, and the supporting cylinders 31 are retracted to be flush with the steel plates 61, so that one end of the lower chord sections 51 at the end parts of the steel truss 5 are positioned at the installation position of the bridge pier 6, and the bridge pier 6 is fixedly connected with the lower chord sections 51;
s4: moving the expansion plate 212 away from the temporary buttress 3, and driving the side-moving motor 29 to move the moving adjusting frames 2 on two sides to the end parts of the lower chord sections 51, which are close to the bridge pier 6, respectively;
s5: installing a middle cross beam 54 and an end cross beam 55 between two steel trusses 5, hoisting the end cross beam 55 to the movable adjusting frames 2 on the two sides by hoisting equipment, driving the vertical oil cylinders 22 and the rotary motors 23 to adjust the placing height and the placing angle of the end cross beam 55, adjusting the position of the expansion plate base 211, connecting the end cross beam 55 with the lower chord sections 51 on the two sides, adjusting the position of the movable adjusting frames 2, and installing the middle cross beam 54 in the same way;
s6: the scissor fork lifter 11 is lifted to approach the mounting position of the web member 52, the movable adjusting frames 2 on two sides are respectively moved between the mounting positions of the web member 52 by the driving side motor 29, the expansion plate 212 is moved to approach the lower chord section 51, and the corresponding limiting lifting motor 48 is driven to lift the limiting plate frame 46 to a proper position;
s7: the web member 52 at the end part of the steel truss 5 is pre-connected with the upper chord member section 53 at the end part to serve as a combined rod section, the combined rod section is installed, the combined rod section is hoisted to the movable adjusting frame 2 by hoisting equipment, the rotating motor 23 is driven to adjust the placement angle of the combined rod section, the expansion plate base 211 and the expansion plate 212 are adjusted, the longitudinal moving oil cylinder 21 is operated to correspond the combined rod section to the lower chord member section 51, the limiting plate frame 46 limits the combined rod section, and the combined rod section is fixedly connected with the lower chord member section 51;
s8: moving the expansion plate 212 away from the lower chord section 51, lifting the scissor lift 11 to approach the mounting position of the cross brace 56, and driving the side moving motor 29 to move the moving adjusting frames 2 on both sides to the end parts of the upper chord section 53 respectively;
s9: installing the cross braces 56 between the combined rod sections, hoisting the cross braces 56 between the combined rod sections onto the movable adjusting frame 2 by using hoisting equipment, driving the vertical oil cylinders 22 and the rotating motors 23 to adjust the placing height and the placing angle of the cross braces 56 between the combined rod sections, adjusting the telescopic plate bases 211, and fixedly connecting the cross braces 56 between the combined rod sections with the combined rod sections;
s10: pushing the movable lifting support 1 and adjusting the movable adjusting frame 2 and the limiting support 4, and continuously installing other lower chord sections 51, web members 52, upper chord sections 53, middle cross beams 54 and cross braces 56.
The position of the telescoping plate mount 211 is moved to align the lower chord section 51 with the end of the previous adjacent lower chord section 51 when the other lower chord section 51 is installed and the telescoping plate mount 211 is moved to align the upper chord section 53 with the end of the previous adjacent upper chord section 53 when the other upper chord section 53 and corresponding web member 52 combination sections are installed.
The steel truss 5 realizes quick positioning through the movable lifting support 1, the movable adjusting frame 2, the temporary buttress 3 and the limiting support 4, has a simple positioning mode, shortens the positioning time and improves the construction efficiency.
Specific embodiment II: referring to fig. 12 and 13, in the first embodiment, the limit bracket 4 adopts the screw 41 and the lifting nut 43 to drive, the driving mode has a low working speed, high abrasion and short service life, so the screw nut structure is changed into a chain structure, in this embodiment, the limit bracket 4 includes a guide rod 42, a sliding sleeve 44, a support plate 45, a limit plate frame 46, a limit cylinder 47 and a connection cross plate 49, and further includes a fixing plate 411, a second limit lifting motor 412, a driving sprocket 413, a driven sprocket 414, a chain 415 and a fixing member 416, the fixing plates 411 are respectively mounted on two sides of the connection cross plate 49, one fixing plate 411 of the connection cross plate 49 is mounted with the second limit lifting motor 412, an output shaft of the second limit lifting motor 412 is fixedly connected with the driving sprocket 413, the other fixing plate 411 on two sides of the connection cross plate 49 is rotationally connected with the driven sprocket 414, the driving sprocket 413 and the driven sprocket 414 are in meshed transmission connection through the chain 415, the two sliding sleeves 44 are connected with the support plate 45 through the support plate 45, and the chain 415 is fixedly connected with the support plate 45 through the fixing member 416.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The utility model provides a steel truss bridge construction installing the system for install steel truss (5) on pier (6), including lifting device, interim buttress (3), its characterized in that: the hydraulic lifting device further comprises a movable lifting support (1), a movable adjusting frame (2) and a limiting bracket (4), two rows of piers (6) are arranged on a river crossing, a plurality of temporary buttresses (3) are arranged between the two piers (6) in the same row at intervals, the movable lifting support (1) is arranged between the two rows of temporary buttresses (3), the movable lifting support (1) realizes lifting through a shearing fork mechanism, a plurality of movable adjusting frames (2) are respectively and movably arranged on two sides of the upper end of the movable lifting support (1), the movable adjusting frames (2) comprise a longitudinal moving cylinder (21), a vertical cylinder (22), a rotating motor (23), a supporting transverse frame (24), a telescopic plate base (211), a telescopic plate (212) and a fixed cylinder (217), the telescopic ends of the longitudinal moving cylinder (21) are provided with the rotating motor (23), the fixed ends of the vertical cylinder (22) are fixedly connected with an output shaft of the rotating motor (23), one side of the vertical cylinder (22) is provided with a fixed cylinder (217), the vertical cylinder (22) is connected with a supporting transverse cylinder (24), the piston rod (218) is connected with the temporary cylinder (31), one side of the upper end of the temporary buttress (3) far away from the movable lifting support (1) is provided with a limiting support (4), and the limiting support (4) is abutted with the steel truss (5) through the up-and-down movement of the limiting plate frame (46).
2. The steel truss bridge construction installation system of claim 1, wherein: the movable lifting support (1) comprises a scissor fork lifter (11), side-shifting racks (12) and side-shifting guide rails (13), the scissor fork lifter (11) comprises a supporting platform (111), the side-shifting racks (12) are respectively fixed on two sides of the supporting platform (111) along the length direction of the steel truss (5), a plurality of side-shifting guide rails (13) are arranged on the supporting platform (111) along the length direction of the supporting platform, and movable pulleys are arranged at the lower ends of the scissor fork lifter (11).
3. The steel truss bridge construction installation system of claim 2, wherein: remove adjustment frame (2) still include gyro wheel (213), flexible rack (214), flexible motor (215) and expansion gear (216), the both sides of expansion plate base (211) all are provided with the gyro wheel track, a plurality of gyro wheels (213) are installed to expansion plate (212) inside both sides, gyro wheel (213) roll in the gyro wheel track of expansion plate base (211), flexible rack (214) are installed to the gyro wheel track lower part of at least one side of expansion plate base (211), flexible motor (215) are installed to expansion plate (212) inboard, the output shaft and the expansion gear (216) fixed connection of expansion motor (215), flexible gear (216) are connected with flexible rack (214) meshing transmission, side shift pulley is installed to the bottom of expansion plate base (211), side shift pulley roll and set up on side shift guide (13).
4. The steel truss bridge construction installation system of claim 2, wherein: the movable adjusting frame (2) further comprises a side-moving motor support (28), a side-moving motor (29) and a side-moving gear (210), a mounting groove is formed in one end, close to the side-moving rack (12), of the telescopic plate base (211), a side-moving motor support (28) is fixed in the mounting groove, a side-moving motor (29) is fixed in the side-moving motor support (28), an output shaft of the side-moving motor (29) is fixedly connected with the side-moving gear (210), and the side-moving gear (210) is in meshed transmission connection with the side-moving rack (12).
5. The steel truss bridge construction installation system of claim 1, wherein: the movable adjusting frame (2) further comprises a side moving bin (25), a supporting seat (26) and a pushing guide rail (27), one end of the bottom surface inside the side moving bin (25) is provided with the pushing guide rail (27), the pushing guide rail (27) extends towards the other end of the side moving bin (25), the supporting seat (26) is slidably arranged on the pushing guide rail (27), the supporting seat (26) is fixedly connected with the telescopic end of the longitudinal moving oil cylinder (21), the other end of the bottom surface inside the side moving bin (25) is provided with a fixed oil cylinder (217), a cylinder body of the longitudinal moving oil cylinder (21) is fixed on the side surface of the side moving bin (25), a piston rod of the longitudinal moving oil cylinder (21) is spliced with the side moving bin (25), the supporting seat (26) comprises a vertical support plate and a bottom support plate which are mutually perpendicular, the piston rod of the longitudinal moving oil cylinder (21) is fixed on the vertical support plate of the supporting seat (26), and the rotary motor (23) is installed on the bottom support plate of the supporting seat (26).
6. The steel truss bridge construction installation system of claim 1, wherein: the limiting support (4) comprises a guide rod (42), a support connecting plate (45), a limiting plate frame (46) and a limiting oil cylinder (47), wherein the guide rod (42) is vertically arranged, the support connecting plate (45) is in sliding connection with the guide rod (42), the middle part of one side of the support connecting plate (45) is provided with the limiting oil cylinder (47), the piston end of the limiting oil cylinder (47) is connected with the limiting plate frame (46), and two ends of the limiting plate frame (46) are respectively connected with two ends of the support connecting plate (45) through telescopic cylinders (410).
7. The steel truss bridge construction installation system of claim 6, wherein: two connection transverse plates (49) are arranged up and down on the limiting support (4), the two connection transverse plates (49) are connected through a guide rod (42), the motor screw structure is arranged between the two connection transverse plates (49) to drive the support connecting plate (45) to move up and down, or the chain structure is arranged between the two connection transverse plates (49) to drive the support connecting plate (45) to move up and down.
8. A construction method of a steel truss bridge construction installation system, which is applied to the steel truss bridge construction installation system as set forth in any one of claims 1 to 7, and is characterized in that: the method comprises the following steps:
s1: installing a movable lifting support (1), a movable adjusting frame (2), temporary buttresses (3) and a limiting support (4), installing the movable adjusting frame (2) on the movable lifting support (1), arranging a plurality of temporary buttresses (3) at intervals between two piers (6) positioned in the same row, installing the limiting support (4) on the temporary buttresses (3), and pushing the movable lifting support (1) between the two rows of temporary buttresses (3);
s2: the method comprises the steps of adjusting the height of a supporting platform (111) to a proper position, adjusting a movable adjusting frame (2) to a proper position, adjusting a supporting oil cylinder (31) to enable the supporting oil cylinder (31) to extend to be slightly higher than an embedded steel plate (61), adjusting the heights of a vertical oil cylinder (22) and a fixed oil cylinder (217) to enable a supporting transverse frame (24) and a roller frame (218) to be level with a piston rod end of the supporting oil cylinder (31), driving a limiting lifting motor I (48), adjusting a limiting plate frame (46) to the installation position of a lower chord member section (51), and driving the limiting oil cylinder (47) to extend the limiting plate frame (46) to a proper position;
s3: the steel trusses (5) are provided with two lower chord sections (51) which are respectively arranged at the end parts of the two steel trusses (5), the lower chord sections (51) are hoisted to two supporting crossbeams (24) which are close to vertical cylinders (22) of the same row of temporary buttresses (3) by hoisting equipment, a rotating motor (23) is driven to adjust the placement angle of the lower chord sections (51), a side motor (29) drives a side-shifting gear (210) to move along a side-shifting rack (12), the positions of a telescopic plate base (211) are adjusted, one end of the lower chord sections (51) is aligned with the installation position of a pier (6), a telescopic plate (212) is moved towards the direction of the temporary buttresses (3), a longitudinal shifting cylinder (21) is driven to push the lower chord sections (51) to be conveyed to a supporting cylinder (31) until the side surfaces of the lower chord sections (51) are in butt joint with limit plate frames (46), the supporting cylinder (31) is retracted to be flush with a pre-buried steel plate (61), one end of the lower chord sections (51) is positioned at the installation position of the pier (6), and the pier (6) is fixedly connected with the lower chord sections (51);
s4: moving the expansion plate (212) to a direction away from the temporary buttress (3), and respectively moving the movable adjusting frames (2) at two sides to the end parts of the lower chord sections (51) close to the bridge piers (6) by the driving side motors (29);
s5: installing a middle cross beam (54) and end cross beams (55) between two steel trusses (5), hoisting the end cross beams (55) to the movable adjusting frames (2) on two sides by hoisting equipment, driving a vertical oil cylinder (22) and a rotary motor (23) to adjust the placing height and the placing angle of the end cross beams (55), adjusting the position of a telescopic plate base (211), connecting the end cross beams (55) with lower chord sections (51) on two sides, adjusting the positions of the movable adjusting frames (2), and installing the middle cross beams (54) in the same way;
s6: the scissor fork lifter (11) is lifted to approach the mounting position of the web member (52), the driving side motor (29) respectively moves the movable adjusting frames (2) at two sides between the mounting positions of the web member (52), the expansion plate (212) is lifted to approach the lower chord section (51), and the corresponding limiting lifting motor I (48) is driven to lift the limiting plate frame (46) to a proper position;
s7: the method comprises the steps of pre-connecting a web member (52) at the end part of a steel truss (5) with an upper chord member section (53) at the end part to form a combined rod section, installing the combined rod section, hoisting the combined rod section to a movable adjusting frame (2) by hoisting equipment, driving a rotating motor (23) to adjust the placement angle of the combined rod section, adjusting a telescopic plate base (211) and a telescopic plate (212), operating a longitudinal moving oil cylinder (21) to correspond the combined rod section to a lower chord member section (51), limiting the combined rod section by a limiting plate frame (46), and fixedly connecting the combined rod section with the lower chord member section (51);
s8: moving the expansion plate (212) to a direction away from the lower chord section (51), and lifting the scissor fork lifter (11) to a mounting position of the cross brace (56), wherein the driving side motor (29) moves the moving adjusting frames (2) at two sides to the end parts of the upper chord section (53) respectively;
s9: installing a cross brace (56) between the combined rod sections, hoisting the cross brace (56) between the combined rod sections onto a movable adjusting frame (2) by using hoisting equipment, driving a vertical oil cylinder (22) and a rotary motor (23) to adjust the placing height and the placing angle of the cross brace (56) between the combined rod sections, adjusting a telescopic plate base (211), and fixedly connecting the cross brace (56) between the combined rod sections with the combined rod sections;
s10: pushing the movable lifting support (1) and adjusting the movable adjusting frame (2) and the limiting support (4), and continuously installing other lower chord sections (51), web members (52), upper chord sections (53), middle cross beams (54) and cross braces (56).
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| CN202410120512.5A CN117845768A (en) | 2024-01-29 | 2024-01-29 | Steel truss bridge construction installation system and construction method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN120797562A (en) * | 2025-09-11 | 2025-10-17 | 山西建筑工程集团有限公司 | Construction platform for installing steel box girder |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN120797562A (en) * | 2025-09-11 | 2025-10-17 | 山西建筑工程集团有限公司 | Construction platform for installing steel box girder |
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