CN117208742A - Sectional hoisting construction method for steel box girder - Google Patents
Sectional hoisting construction method for steel box girder Download PDFInfo
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- CN117208742A CN117208742A CN202311159801.8A CN202311159801A CN117208742A CN 117208742 A CN117208742 A CN 117208742A CN 202311159801 A CN202311159801 A CN 202311159801A CN 117208742 A CN117208742 A CN 117208742A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 119
- 239000010959 steel Substances 0.000 title claims abstract description 119
- 238000010276 construction Methods 0.000 title claims abstract description 39
- 230000007246 mechanism Effects 0.000 claims abstract description 41
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 50
- 230000005540 biological transmission Effects 0.000 claims description 33
- 229910052742 iron Inorganic materials 0.000 claims description 25
- 230000004308 accommodation Effects 0.000 claims description 13
- 239000003351 stiffener Substances 0.000 claims description 10
- 238000005728 strengthening Methods 0.000 claims description 7
- 230000000694 effects Effects 0.000 abstract description 4
- 230000003014 reinforcing effect Effects 0.000 description 14
- 238000009826 distribution Methods 0.000 description 5
- 238000000926 separation method Methods 0.000 description 5
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 4
- 235000017491 Bambusa tulda Nutrition 0.000 description 4
- 241001330002 Bambuseae Species 0.000 description 4
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 4
- 239000011425 bamboo Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
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Abstract
The application provides a segmental hoisting construction method for a steel box girder, and relates to the field of steel box girder hoisting. Which comprises the following steps: s1: connecting a steel wire rope on a crane with a hanging component in a hanging mechanism; s2: connecting a positioning component in the hanging and pulling mechanism with the steel box girder; s3: the driving component in the hanging and pulling mechanism is utilized to drive the hooking and pulling component in the hanging and pulling mechanism to be connected with the steel box girder; s4: the crane lifts the steel box girder to a construction site; s5: the driving component in the hanging and pulling mechanism is used again to drive the hooking and pulling component in the hanging and pulling mechanism to be separated from the steel box girder; s6: and (5) repeating the steps S2-S5 so as to quickly hoist and convey the sections of steel box girders to a construction site. The application has the effect of improving the lifting efficiency of the steel box girder.
Description
Technical Field
The application relates to the field of steel box girder hoisting, in particular to a steel box girder sectional hoisting construction method.
Background
The steel box girder is also called a steel plate box girder, and is a common structural form of a large-span bridge; is commonly used on bridges with larger spans, and is called a steel box girder because of the shape of a box.
In the bridge construction process, the length of the bridge is generally long, so that the steel box girder needs to be hoisted in sections.
Currently, in the related art, chinese patent with publication number CN115594065a discloses a steel box girder hoisting device, which includes: a hanging ring; the center of the first beam body is provided with a through hole, four corners of the top surface are respectively provided with a hoisting point, and each hoisting point is connected with a hoisting ring through a steel wire rope; the second beam body is horizontally and rotatably arranged on the top surface of the first beam body; the third beam body is arranged right below the second beam body; the vertical rod is vertically arranged in the through hole, and the upper end and the lower end of the vertical rod are respectively connected with the second beam body and the third beam body; the three telescopic mechanisms are vertically arranged in the through holes at intervals, the upper end of each telescopic mechanism is connected with the second beam body, the lower end of each telescopic mechanism is in sliding hinge joint with the third beam body, and the three telescopic mechanisms and the vertical rods are arranged in a matrix with the center point of the second beam body as the center; and the four distribution beam mechanisms are arranged on the bottom surface of the third beam body in a matrix with the center point of the third beam body as the center.
In the hoisting operation, the lengths of the first telescopic mechanism, the second telescopic mechanism and the third telescopic mechanism are firstly adjusted to enable the third beam body to be kept horizontal; the bottoms of the four distribution beam mechanisms are respectively connected with the top surfaces of the steel box beams to be hoisted, so that the steel box beams to be hoisted are connected to a third beam body; and then starting a crane to hoist the steel box girder to a position close to a corresponding construction point, finally lowering the steel box girder to the corresponding construction point through the crane, and disassembling the four distribution girder mechanisms from the steel box girder to finish the hoisting operation of the steel box girder.
However, before hoisting the steel box girder, four distribution beam mechanisms are required to be connected with the steel box girder to be hoisted successively, and then the four distribution beam mechanisms are required to be dismounted from the steel box girder successively after being hoisted to a construction point, so that the hoisting efficiency of the steel box girder is seriously affected, and the efficiency of bridge construction is further affected.
Disclosure of Invention
The application provides a segmental hoisting construction method for a steel box girder, which aims to solve the problem of low hoisting efficiency for the steel box girder.
The application provides a steel box girder segmental hoisting construction method, which adopts the following technical scheme:
a steel box girder segmental hoisting construction method comprises the following steps:
s1: connecting a steel wire rope on a crane with a hanging component in a hanging mechanism;
s2: connecting a positioning component in the hanging and pulling mechanism with the steel box girder;
s3: the driving components in the hanging and pulling mechanism are utilized to drive a plurality of groups of hooking and pulling components in the hanging and pulling mechanism to be connected with the steel box girder;
s4: the crane lifts the steel box girder to a construction site;
s5: the driving components in the hanging and pulling mechanism are used again to drive the multiple groups of hooking and pulling components in the hanging and pulling mechanism to be separated from the steel box girder;
s6: and (5) repeating the steps S2-S5 so as to quickly hoist and convey the sections of steel box girders to a construction site.
Through adopting above-mentioned technical scheme, utilize drive assembly, collude and draw the subassembly and can be with steel case roof beam fixed connection fast to lift by crane steel case roof beam fast, with the efficiency of lifting by crane to steel case roof beam improves, thereby can improve the efficiency of bridge construction.
Optionally, the hanging and pulling assembly includes: the lifting lug is fixed at the top of the ring rod, the fixing plate is fixed with the steel wire rope, the fixing plate is fixedly connected with the lifting lug through a bolt and a nut, the positioning component and the hooking component are both arranged on the ring rod, and the driving component is arranged between the positioning component and the hooking component.
Through adopting above-mentioned technical scheme, lift by crane the completion to all steel case roof beams after, can dismantle the separation with fixed plate and lug to be convenient for deposit the ring pole.
Optionally, the positioning assembly includes: the steel box girder comprises a frame plate, a support rod, a support plate and a positioning cross frame, wherein a positioning groove is formed in the top of the steel box girder, the frame plate is fixed to the top of the ring rod, the support rod is arranged at the bottom of the frame plate, the support plate is fixed to the support rod, the support plate is in butt joint with the top wall of the steel box girder, the positioning cross frame is fixed to the top wall of the support plate, the positioning cross frame is arranged in the positioning groove, and the driving assembly is arranged between the support rod and the hooking assembly.
Through adopting above-mentioned technical scheme, utilize the location cross, can fix a position the ring pole at the top of steel case roof beam and be difficult for taking place the skew to follow-up collude and draw the subassembly and can carry out quick connect with steel case roof beam, thereby improve the efficiency of lifting by crane to steel case roof beam.
Optionally, the driving assembly includes: the rotary rack comprises a rotary rod, a transmission rod, a driving gear, a driven gear, a transmission gear, a rotary gear and a driving motor, wherein one end of the rotary rod is rotatably installed at the bottom of the rack plate, the other end of the rotary rod is rotatably connected with the supporting rod, the driving motor is fixed at the top of the rack plate, an output shaft of the driving motor is coaxially fixed with the rotary rod, one end of the transmission rod is rotatably installed on the annular rod and is coaxially fixed with the transmission gear, the other end of the transmission rod is coaxially fixed with the driven gear, the driving gear is coaxially sleeved on the rotary rod, the rotary gear is fixed with the hooking component, the driving gear is meshed with the driven gear, and the transmission gear is meshed with the rotary gear.
Through adopting above-mentioned technical scheme, start driving motor to the drive dwang corotation, the rotation of dwang will drive driving gear, driven gear, transfer line, transfer gear and the rotation of rotating gear in proper order, and the rotation of rotating gear will drive the multiunit and collude and draw the subassembly simultaneously and collude and draw the steel case roof beam automatically, thereby need not constructor and carry out fixed connection to crane and steel case roof beam slowly, in order to improve the efficiency of lifting by crane to steel case roof beam.
Optionally, the hooking component includes: the device comprises a downward moving part, a linkage part, a hooking part and a jacking part, wherein the downward moving part comprises: the steel box girder comprises a screw rod, an iron column, a limiting block and a bottom block, wherein a mounting hole is formed in the bottom of the ring rod, a transmission rod penetrates into the mounting hole, a connecting hole is formed in the top of the steel box girder, a threaded hole is formed in the iron column in a penetrating mode, one end of the screw rod is rotatably installed in the mounting hole, the other end of the screw rod is in contact with the top opening of the threaded hole, a rotating gear is coaxially sleeved on the screw rod, a limiting groove is formed in the inner wall of the mounting hole, the limiting block is slidably connected in the limiting groove, the limiting block is fixed with the iron column, the bottom block is fixed to the bottom of the iron column and is arranged in the connecting hole, and a hooking portion and a propping portion are arranged on the bottom block.
Through adopting above-mentioned technical scheme, when rotating the gear, the gear will drive the lead screw and rotate, and the rotation of lead screw will drive the iron prop and follow vertical direction downwardly moving, until the bottom block inserts in the connecting hole to be convenient for collude and draw the portion and collude and draw the steel case roof beam.
Optionally, the hooking portion includes: the screw rod and collude the arm-tie, collude the arm-tie has been seted up to the inside wall of connecting hole, the inside of bottom block is provided with the accommodation chamber, the lateral wall of bottom block seted up with the accommodation hole of accommodation chamber intercommunication, collude the arm-tie one end set up in collude the arm-tie, the other end set up in the accommodation hole, collude and seted up the promotion hole on the arm-tie, the screw rod is rotated and is installed in the accommodation chamber, just the one end threaded connection of screw rod in the promotion hole, the linkage portion set up in between the screw rod with the screw rod.
Through adopting above-mentioned technical scheme, after the bottom block inserts, the lead screw will idle running to drive the operation of linkage portion, the linkage portion rotates the drive screw, thereby promotes to collude the arm-tie and inserts in the collude the arm-tie hole.
Optionally, the linkage part includes: the screw rod is fixed, the other end of the screw rod penetrates through the accommodating cavity and is coaxially fixed with the first gear, the second gear is coaxially fixed with the screw rod, and the first gear is meshed with the second gear.
By adopting the technical scheme, in the process of inserting the bottom block into the connecting hole, the linkage rod relatively moves upwards until the bottom block is inserted, and the first gear is meshed with the second gear; at the same time, the screw rod starts to idle, and the idle rotation of the screw rod drives the linkage rod to rotate; the rotation of the linkage rod drives the first gear, the second gear and the screw rod to rotate in sequence, and the rotation of the screw rod drives the hooking plate to be inserted into the hooking hole, so that the hooking of the steel box girder is completed.
Optionally, the jacking portion includes: the top support plate and the top support spring, the top support plate set up in the connecting hole, the one end of top support spring with the bottom block is fixed, the other end with the top support plate is fixed.
Through adopting above-mentioned technical scheme, through the elasticity of propping up the spring, can let the top opening part butt of lead screw and screw hole tighter to the lead screw can screw in the screw hole, with drive iron prop upwards remove along vertical direction, until top fagging and connecting hole separation, thereby accomplish the separation of hanging and pulling mechanism and steel box girder.
Optionally, collude and draw the board with be provided with between the stopper and draw the subassembly in reverse, draw the subassembly in reverse and include: connecting rope, stiffener and reset spring, set up the locating hole on the stopper, the strengthening hole has been seted up to the inner wall of spacing groove, the one end of stiffener set up in the locating hole, the other end set up in the strengthening hole, reset spring is fixed in the stiffener with between the hole bottom of locating hole, the one end of connecting rope with the stiffener is fixed, the other end runs through to the holding chamber and with collude the arm-tie is fixed, the confession has been seted up to the inner wall of spacing groove the groove of stepping down that the connecting rope removed.
Through adopting above-mentioned technical scheme, collude the arm-tie to collude the arm-tie and to collude the in-process that the arm-tie inserts in the arm-tie hole, collude the arm-tie and will pull the stiffener to insert in the arm-tie to the strengthening hole, thereby improve the intensity of stopper.
Optionally, the driving assembly further includes: the cover section of thick bamboo, the one end of cover section of thick bamboo with the diapire of frame plate is fixed, the fixed cover of the other end is located on the bracing piece, the transfer line keep away from the one end of ring pole runs through the cover section of thick bamboo and with the cover section of thick bamboo rotates to be connected.
By adopting the technical scheme, the cover cylinder can prevent the driving gear and the driven gear from being directly exposed to the outside to form protection; on the other hand can support the transfer line to the transfer line can act as the strengthening rib, in order to play the effect that improves the intensity between annular pole and the bracing piece.
In summary, the present application includes at least one of the following beneficial effects:
1. the hooking component can be quickly and fixedly connected with the steel box girder, so that the steel box girder can be quickly lifted, the lifting efficiency of the steel box girder can be improved, and the efficiency of bridge construction can be improved.
2. When the rotating gear rotates, the rotating gear drives the screw rod to rotate, and the screw rod rotates to drive the iron column to move downwards along the vertical direction until the bottom block is inserted into the connecting hole, so that the hooking part is convenient to hook and pull the steel box girder.
3. The cover cylinder prevents the driving gear and the driven gear from being directly exposed to the outside to form protection; on the other hand can support the transfer line to the transfer line can act as the strengthening rib, in order to play the effect that improves the intensity between annular pole and the bracing piece.
Drawings
FIG. 1 is a schematic diagram of a structure according to an embodiment of the present application;
FIG. 2 is a schematic top view of FIG. 1;
FIG. 3 is a schematic cross-sectional view taken along section line A-A in FIG. 2;
FIG. 4 is a schematic enlarged partial view of portion B of FIG. 3;
fig. 5 is a schematic partial enlarged view of a portion C in fig. 3.
In the figure: 1. a wire rope; 2. a steel box girder; 21. a connection hole; 211. hooking and pulling the hole; 22. a positioning groove; 3. a hanging and pulling assembly; 31. a loop bar; 311. a mounting hole; 3111. a limit groove; 3112. reinforcing holes; 3113. a relief groove; 32. lifting lugs; 33. a fixing plate; 4. a positioning assembly; 41. a frame plate; 42. a support rod; 43. a support plate; 44. positioning a cross; 5. a drive assembly; 51. a cover cylinder; 52. a rotating lever; 53. a transmission rod; 54. a drive gear; 55. a driven gear; 56. a transmission gear; 57. rotating the gear; 58. a driving motor; 6. a downward moving part; 61. a screw rod; 62. an iron column; 621. a threaded hole; 63. a limiting block; 631. a mounting hole; 64. a bottom block; 641. a receiving chamber; 642. an accommodation hole; 7. a hooking and pulling part; 71. a screw; 72. a hooking plate; 721. a push hole; 8. a linkage part; 81. a linkage rod; 82. a first gear; 83. a second gear; 9. a top support portion; 91. a top support plate; 92. a jack spring; 10. a counter-pulling assembly; 101. a connecting rope; 102. a reinforcing rod; 103. and a return spring.
Detailed Description
The embodiment of the application provides a segmental hoisting construction method for a steel box girder.
A steel box girder segmental hoisting construction method comprises the following steps:
s1: connecting a steel wire rope 1 on a crane with a hanging component 3 in a hanging mechanism;
s2: connecting a positioning component 4 in the hanging and pulling mechanism with the steel box girder 2;
s3: the driving component 5 in the hanging and pulling mechanism is utilized to drive the hooking and pulling component in the hanging and pulling mechanism to be connected with the steel box girder 2;
s4: the crane lifts the steel box girder 2 to a construction site;
s5: the driving component 5 in the hanging and pulling mechanism is used again to drive the hooking and pulling component in the hanging and pulling mechanism to be separated from the steel box girder 2;
s6: and repeating the steps S2-S5 to quickly hoist the sections of steel box girders 2 to a construction place, thereby improving the efficiency of bridge construction.
Referring to fig. 1, the sling assembly 3 includes: the ring bar 31, the lifting lug 32 and the fixing plate 33, wherein the ring bar 31 approximates a photo frame in the embodiment of the application. The lifting lugs 32 are welded on the top of the ring rod 31, in the embodiment of the application, the number of the lifting lugs 32 is four, and the four lifting lugs 32 are respectively positioned at four corners of the ring rod 31. The fixing plate 33 is fixed to one end of the wire rope 1 far away from the crane (not shown), the fixing plate 33 is U-shaped in the embodiment of the application, and the fixing plate 33 is fixedly connected with the lifting lug 32 through bolts and nuts. Before the steel box girder 2 is lifted, the fixing plate 33 is fixedly connected with the lifting lug 32 by utilizing bolts and nuts, so that the fixed connection between the ring rod 31 and the steel wire rope 1 is completed, and the steel box girder 2 is lifted later; after the hoisting of all the steel box girders 2 is completed, the fixing plate 33 and the lifting lugs 32 can be detached, so that the ring rods 31 can be stored conveniently.
Referring to fig. 2 and 3, the positioning assembly 4 includes: the frame plate 41, the support rod 42, the support plate 43 and the positioning cross 44, wherein the frame plate 41 is welded on the top of the ring rod 31, and the frame plate 41 is U-shaped in the embodiment of the application. The bracing piece 42 sets up in the bottom of frame plate 41, and backup pad 43 welds in the one end that the bracing piece 42 kept away from frame plate 41, and backup pad 43 and the roof butt of steel case roof beam 2.
Referring to fig. 3, a positioning groove 22 is formed in the top wall of the steel box girder 2, and the positioning groove 22 is cross-shaped. The positioning cross 44 is welded on the bottom wall of the supporting plate 43, the positioning cross 44 is arranged in the positioning groove 22, and the positioning cross 44 is utilized to position the ring rod 31 at the top of the steel box girder 2 without easy deviation, so that the subsequent hooking component can be quickly connected with the steel box girder 2, and the lifting efficiency of the steel box girder 2 is improved.
Referring to fig. 3, 4 and 5, the driving assembly 5 includes: the cover cylinder 51, the rotating rod 52, the transmission rod 53, the driving gear 54, the driven gear 55, the transmission gear 56, the rotating gear 57 and the driving motor 58, wherein one end of the rotating rod 52 is rotatably installed at the bottom of the frame plate 41, and the other end of the rotating rod 52 is rotatably connected with one end of the supporting rod 42 far away from the supporting plate 43. The driving motor 58 is fixedly installed at the top of the frame plate 41, and an output shaft of the driving motor 58 is coaxially fixed with the rotating rod 52 so as to drive the rotating rod 52 to rotate, and in the embodiment of the application, the driving motor 58 has forward and reverse rotation and self-locking functions.
Referring to fig. 4 and 5, in the embodiment of the present application, four groups of hooking components are disposed at four corners of the ring rod 31, four transmission rods 53 are also disposed, and the four transmission rods 53 are in one-to-one correspondence with the four groups of hooking components. One end of a transmission rod 53 is rotatably installed on the ring rod 31 and coaxially fixed with a transmission gear 56, the other end is coaxially fixed with a driven gear 55, a driving gear 54 is coaxially sleeved on the rotation rod 52, the rotation gear 57 is connected with a hooking component, the driving gear 54 is meshed with the driven gear 55, the transmission gear 56 is meshed with the rotation gear 57, and in the embodiment of the application, the driving gear 54, the driven gear 55, the transmission gear 56 and the rotation gear 57 are bevel gears.
After the ring rod 31 is positioned, the driving motor 58 can be started to drive the rotating rod 52 to rotate positively, the rotation of the rotating rod 52 sequentially drives the driving gear 54, the driven gear 55, the transmission rod 53, the transmission gear 56 and the rotating gear 57 to rotate, and the rotation of the rotating gear 57 drives the four groups of hooking and pulling components to hook and pull the steel box girder 2 simultaneously and automatically, so that a constructor is not required to fixedly connect the crane and the steel box girder 2 slowly, the lifting efficiency of the steel box girder 2 is improved, and the efficiency of bridge construction can be improved.
Referring to fig. 4, one end of a cover cylinder 51 is welded at the bottom of a frame plate 41, the other end is fixedly sleeved on a supporting rod 42, one end of a transmission rod 53, which is far away from a transmission gear 56, penetrates through the cover cylinder 51 and is rotationally connected with the cover cylinder 51, namely a driving gear 54 and a driven gear 55 are both positioned in the cover cylinder 51, and the cover cylinder 51 enables the driving gear 54 and the driven gear 55 not to be directly exposed outside to form protection on one hand; on the other hand, the transmission rod 53 can be supported so that the transmission rod 53 can serve as a reinforcing rib to exert an effect of improving the strength between the ring rod 31 and the support rod 42.
Referring to fig. 5, the hooking assembly includes: a downward moving part 6, a linkage part 8, a hooking part 7 and a top supporting part 9.
Referring to fig. 5, the downward moving portion 6 includes: the screw rod 61, the iron column 62, the limiting block 63 and the bottom block 64 are provided with mounting holes 311 at the bottom and four corners of the ring rod 31, and one end of the transmission rod 53, which is far away from the cover cylinder 51, penetrates into the mounting holes 311, namely the transmission gear 56 and the rotation gear 57 are located in the mounting holes 311, so that the transmission gear 56 and the rotation gear 57 are protected. The roof of iron prop 62 runs through and has offered screw hole 621, and the one end of lead screw 61 is rotated and is installed at the hole bottom of mounting hole 311, and the other end contacts with the open top of screw hole 621, and lead screw 61 is vertical to be set up, and when collude and draw the subassembly and need not to use, lead screw 61 threaded connection in screw hole 621, and rotation gear 57 coaxial sleeve is located on the lead screw 61.
Referring to fig. 5, the inner side wall of the mounting hole 311 is provided with four limit grooves 3111 in the vertical direction, and in the embodiment of the application, the limit grooves 3111 are evenly distributed along the circumferential direction of the iron rod. The stopper 63 sliding connection is in limit groove 3111 and follows vertical direction and slide, stopper 63 and iron prop 62 welded fastening, and stopper 63 can be spacing iron prop 62 to make lead screw 61 when rotating, iron prop 62 be difficult for following and can follow vertical direction and remove. The connecting hole 21 is formed in the top wall of the steel box girder 2, the bottom block 64 is welded to the bottom of the iron column 62, and the bottom block 64 is arranged in the connecting hole 21.
When the rotating gear 57 rotates, the rotating gear 57 drives the screw rod 61 to rotate, and the rotation of the screw rod 61 drives the iron column 62 to move downwards in the vertical direction until the bottom block 64 is inserted into the connecting hole 21, so that the hooking part 7 is convenient for hooking the steel box girder 2; and after the bottom block 64 is inserted into the connection hole 21, the rotation of the screw rod 61 does not drive the iron post 62 to move downward in the vertical direction, but contacts with the top opening of the screw hole 621 to perform idle rotation.
Referring to fig. 5, the linkage 8 includes: the inside of the bottom block 64 is provided with a receiving cavity 641, one end of the linkage rod 81 is fixed to the bottom wall of the screw 61, and the other end penetrates into the receiving cavity 641 and is coaxially fixed to the first gear 82. The second gear 83 is connected to the hooking portion 7, and the first gear 82 is meshed with the second gear 83, and in this embodiment, the first gear 82 and the second gear 83 are bevel gears.
Referring to fig. 5, the hooking portion 7 includes: the side wall of the bottom block 64 is provided with containing holes 642, the containing holes 642 are communicated with the containing cavity 641, four containing holes 642 are arranged in the embodiment of the application, and the four containing holes 642 are uniformly distributed along the circumferential direction of the bottom block 64; the inner side wall of the connecting hole 21 is provided with four hooking holes 211, and the hooking holes 211 are in one-to-one correspondence with the accommodating holes 642. One end of the hooking plate 72 is disposed in the accommodating hole 642, and the other end is disposed in the hooking hole 211.
Referring to fig. 5, a push hole 721 is formed on a side of the hooking plate 72 away from the hooking hole 211, the screw 71 is rotatably installed in the accommodating cavity 641 and horizontally disposed, and one end of the screw 71 is screwed into the push hole 721 and the other end is coaxially fixed to the second gear 83. During the insertion of the bottom block 64 into the connection hole 21, the link rod 81 relatively moves upward until the first gear 82 is also meshed with the second gear 83 after the insertion of the bottom block 64 is completed; at the same time, the screw 61 starts to idle, and the idle of the screw 61 drives the linkage rod 81 to rotate;
rotation of the linkage rod 81 will drive rotation of the first gear 82, the second gear 83 and the screw 71 in sequence, and rotation of the screw 71 will drive the hooking plate 72 to insert into the hooking hole 211, thereby completing hooking of the steel box girder 2 so as to hoist the steel box girder 2.
Referring to fig. 5, further, a counter pull assembly 10 is disposed between the hooking plate 72 and the limiting block 63, and the counter pull assembly 10 includes: connecting rope 101, reinforcing rod 102 and reset spring 103, stopper 63 have seted up the settling hole 631 in the one side of keeping away from iron prop 62, and the reinforcing hole 3112 has been seted up to the inside wall of spacing groove 3111 and the bottom that is located spacing groove 3111. One end of the reinforcing rod 102 is disposed in the mounting hole 631, and the other end is disposed in the reinforcing hole 3112, and the reinforcing rod 102 can improve the strength of the stopper 63, so that the iron column 62 can be better supported for more stably hanging the steel box girder 2.
Referring to fig. 5, the return spring 103 has one end fixed to the reinforcing rod 102 and the other end fixed to the bottom of the seating hole 631, and the return spring 103 is used to return the reinforcing rod 102, i.e., retract the reinforcing rod 102 into the seating hole 631. One end of the connecting rope 101 is fixed with one end of the reinforcing rod 102 far away from the return spring 103, and the other end penetrates into the accommodating cavity 641 and is fixed with one side of the hooking plate 72 far away from the hooking hole 211. During the process of inserting the hooking plate 72 into the hooking hole 211, the hooking plate 72 pulls the connecting rope 101, and the connecting rope 101 pulls the reinforcing rod 102 into the reinforcing hole 3112, so that the strength of the limiting block 63 is improved; the return spring 103 will also return the stiffener 102 when the hooking plate 72 moves back into the receiving aperture 642.
In the embodiment of the application, the inner side wall of the limiting groove 3111 is provided with a yielding groove 3113 for the connecting rope 101 to move, and the yielding groove 3113 is communicated with the reinforced hole 3112.
Referring to fig. 5, the jacking portion 9 includes: top support plate 91 and top support spring 92, top support plate 91 is disposed in connecting hole 21 and located directly below bottom block 64. One end of the jack spring 92 is fixed to the bottom wall of the bottom block 64, and the other end is fixed to the top wall of the jack plate 91, so that the screw 61 can be abutted to the top opening of the screw hole 621 by the elastic force of the jack spring 92. After the steel box girder 2 is hoisted to a construction site, the driving motor 58 is started to drive the rotating rod 52 to rotate reversely, namely the screw rod 61 can drive the linkage rod 81 to rotate reversely; the reverse rotation of the link rod 81 can drive the screw rod 71 to reverse rotation so as to retract the hooking plate 72 into the accommodation hole 642;
meanwhile, the bottom block 64 is not limited by the hooking plate 72 any more, and the screw rod 61 is abutted against the top opening of the threaded hole 621 by the elasticity of the supporting spring 92, so that the screw rod 61 can be screwed into the threaded hole 621 to drive the iron column 62 to move upwards in the vertical direction until the supporting plate 91 is separated from the connecting hole 21, and the separation of the hanging and pulling mechanism from the steel box girder 2 is completed, so that the hanging and pulling mechanism can hoist and convey a new steel box girder 2.
In the embodiment of the application, the holes and the grooves formed in the steel box girder 2 are reserved in the manufacturing process of the steel box girder 2 and are not formed in the later stage, so that the subsequent hoisting efficiency of the steel box girder 2 can be improved.
The application relates to a steel box girder segmental hoisting construction method, which is characterized by comprising the following working principles: after the steel box girder 2 is hoisted to a construction site, the driving motor 58 is started to drive the rotating rod 52 to rotate reversely, namely the screw rod 61 can drive the linkage rod 81 to rotate reversely; the reverse rotation of the link rod 81 can drive the screw rod 71 to reverse rotation so as to retract the hooking plate 72 into the accommodation hole 642;
meanwhile, the bottom block 64 is not limited by the hooking plate 72 any more, and the screw rod 61 is abutted against the top opening of the threaded hole 621 by the elasticity of the supporting spring 92, so that the screw rod 61 can be screwed into the threaded hole 621 to drive the iron column 62 to move upwards in the vertical direction until the supporting plate 91 is separated from the connecting hole 21, and the separation of the hanging and pulling mechanism from the steel box girder 2 is completed, so that the hanging and pulling mechanism can hoist and convey a new steel box girder 2.
The above embodiments are not intended to limit the scope of the present application, so: all equivalent changes in structure, shape and principle of the application should be covered in the scope of protection of the application.
Claims (10)
1. The segmental hoisting construction method for the steel box girder is characterized by comprising the following steps of:
s1: connecting a steel wire rope (1) on a crane with a hanging component (3) in a hanging mechanism;
s2: connecting a positioning component (4) in the hanging and pulling mechanism with the steel box girder (2);
s3: a plurality of groups of hooking and pulling components in the hanging and pulling mechanism are driven to be connected with the steel box girder (2) by using a driving component (5) in the hanging and pulling mechanism;
s4: the steel box girder (2) is hoisted to a construction site by the crane;
s5: the driving component (5) in the hanging and pulling mechanism is used again to drive a plurality of groups of hooking and pulling components in the hanging and pulling mechanism to be separated from the steel box girder (2);
s6: and (5) repeating the steps S2-S5 so as to quickly hoist the sections of steel box girders (2) to a construction site.
2. The steel box girder segmental hoisting construction method according to claim 1, wherein the hoisting assembly (3) comprises: the lifting device comprises a ring rod (31), a lifting lug (32) and a fixing plate (33), wherein the lifting lug (32) is fixed at the top of the ring rod (31), the fixing plate (33) is fixed with the steel wire rope (1), the fixing plate (33) is fixedly connected with the lifting lug (32) through bolts and nuts, the positioning component (4) and the hooking component are arranged on the ring rod (31), and the driving component (5) is arranged between the positioning component (4) and the hooking component.
3. The steel box girder segmental hoisting construction method according to claim 2, wherein the positioning assembly (4) comprises: the steel box girder comprises a frame plate (41), a supporting rod (42), a supporting plate (43) and a positioning cross (44), wherein a positioning groove (22) is formed in the top of the steel box girder (2), the frame plate (41) is fixed to the top of the ring rod (31), the supporting rod (42) is arranged at the bottom of the frame plate (41), the supporting plate (43) is fixed to the supporting rod (42), the supporting plate (43) is abutted to the top wall of the steel box girder (2), the positioning cross (44) is fixed to the top wall of the supporting plate (43), the positioning cross (44) is arranged in the positioning groove (22), and a driving assembly (5) is arranged between the supporting rod (42) and the hooking assembly.
4. A steel box girder segmental hoisting construction method according to claim 3, wherein the driving assembly (5) comprises: the rotary table comprises a rotary rod (52), a transmission rod (53), a driving gear (54), a driven gear (55), a transmission gear (56), a rotary gear (57) and a driving motor (58), wherein one end of the rotary rod (52) is rotatably arranged at the bottom of the frame plate (41), the other end of the rotary rod is rotatably connected with the supporting rod (42), the driving motor (58) is fixed at the top of the frame plate (41), an output shaft of the driving motor (58) is coaxially fixed with the rotary rod (52), one end of the transmission rod (53) is rotatably arranged on the ring rod (31) and coaxially fixed with the transmission gear (56), the other end of the transmission rod is coaxially fixed with the driven gear (55), the driving gear (54) is coaxially sleeved on the rotary rod (52), the rotary gear (57) is fixedly meshed with the hooking component, and the driving gear (54) is meshed with the driven gear (55), and the transmission gear (56) is meshed with the rotary gear (57).
5. The steel box girder segmented hoisting construction method according to claim 4, wherein the hooking component comprises: the device comprises a downward moving part (6), a linkage part (8), a hooking part (7) and a jacking part (9), wherein the downward moving part (6) comprises: lead screw (61), iron prop (62), stopper (63) and bottom block (64), mounting hole (311) have been seted up to the bottom of ring pole (31), just transfer line (53) run through to in mounting hole (311), connecting hole (21) have been seted up at the top of steel case roof beam (2), run through on iron prop (62) set up threaded hole (621), the one end rotation of lead screw (61) is installed in mounting hole (311), the other end with the open top of threaded hole (621) contacts, rotate gear (57) coaxial cover is located on lead screw (61), spacing groove (3111) have been seted up to the inner wall of mounting hole (311), stopper (63) sliding connection in spacing groove (3111), just stopper (63) with iron prop (62) are fixed, bottom block (64) be fixed in the bottom of iron prop (62) and set up in connecting hole (21), collude draw portion (7) with draw portion (9) set up in between lead screw (8) draw portion (8).
6. The steel box girder segmental hoisting construction method according to claim 5, wherein the hooking part (7) comprises: the screw rod (71) and collude arm-tie (72), collude arm-tie (211) have been seted up to the inside wall of connecting hole (21), the inside of bottom block (64) is provided with accommodation chamber (641), the lateral wall of bottom block (64) seted up with accommodation hole (642) of accommodation chamber (641) intercommunication, collude the one end of arm-tie (72) set up in collude arm-tie (211) in the accommodation hole (642), collude arm-tie (72) on set up push hole (721), screw rod (71) rotate install in accommodation chamber (641), just one end threaded connection of screw rod (71) in push hole (721), link (8) set up in between screw rod (61) and screw rod (71).
7. The steel box girder segmental hoisting construction method according to claim 6, wherein the linkage part (8) comprises: the linkage rod (81), first gear (82) and second gear (83), the one end of linkage rod (81) with lead screw (61) is fixed, the other end runs through to in holding chamber (641) and with first gear (82) coaxial fixation, second gear (83) with screw rod (71) coaxial fixation, just first gear (82) with second gear (83) mesh.
8. The steel box girder segmental hoisting construction method according to claim 5, wherein the jacking portion (9) comprises: the top support plate (91) and top support spring (92), top support plate (91) set up in connecting hole (21), top support spring (92) one end with bottom block (64) is fixed, the other end with top support plate (91) is fixed.
9. The steel box girder segmental hoisting construction method according to claim 6, wherein a counter pulling assembly (10) is arranged between the hooking plate (72) and the limiting block (63), and the counter pulling assembly (10) comprises: connect rope (101), stiffener (102) and reset spring (103), set up mounting hole (631) on stopper (63), strengthening hole (3112) have been seted up to the inner wall of spacing groove (3111), the one end of stiffener (102) set up in mounting hole (631) in the other end set up in strengthening in hole (3112), reset spring (103) are fixed in between stiffener (102) with the hole bottom of mounting hole (631), the one end of connecting rope (101) with stiffener (102) is fixed, the other end runs through to holding chamber 641 and with collude pulling plate (72) and fix, the confession is seted up to the inner wall of spacing groove (3111) connect groove (3113) that the rope (101) removed.
10. The steel box girder segmental hoisting construction method according to claim 4, wherein said driving assembly (5) further comprises: the cover cylinder (51), one end of the cover cylinder (51) is fixed with the bottom wall of the frame plate (41), the other end of the cover cylinder is fixedly sleeved on the supporting rod (42), and one end of the transmission rod (53) away from the ring rod (31) penetrates through the cover cylinder (51) and is rotationally connected with the cover cylinder (51).
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| US20240065138A1 (en) * | 2022-08-31 | 2024-02-29 | Deere & Company | Method for Locating and Planting Sentinel Plants |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US20240065138A1 (en) * | 2022-08-31 | 2024-02-29 | Deere & Company | Method for Locating and Planting Sentinel Plants |
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