CN113215961A - Support structure for supporting small box girder and construction method thereof - Google Patents
Support structure for supporting small box girder and construction method thereof Download PDFInfo
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- CN113215961A CN113215961A CN202110544508.8A CN202110544508A CN113215961A CN 113215961 A CN113215961 A CN 113215961A CN 202110544508 A CN202110544508 A CN 202110544508A CN 113215961 A CN113215961 A CN 113215961A
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- 238000010276 construction Methods 0.000 title claims abstract description 15
- 230000005540 biological transmission Effects 0.000 claims description 7
- 238000000034 method Methods 0.000 claims 1
- 238000009435 building construction Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 abstract description 2
- 230000003014 reinforcing effect Effects 0.000 description 10
- 238000013459 approach Methods 0.000 description 4
- 230000004308 accommodation Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000003351 stiffener Substances 0.000 description 1
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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
- E01D19/00—Structural or constructional details of bridges
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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 application relates to a supporting structure for supporting a small box girder and a construction method thereof, belonging to the field of building construction equipment, and comprising a top block and a bottom block positioned below the top block, wherein a clamping assembly is arranged on the top block, and a lifting part is arranged between the bottom block and the top block; the upper part of the ejector block consists of a first sliding surface and a second sliding surface, and the first sliding surface and the second sliding surface incline to the direction away from each other from bottom to top; a first sliding groove and a second sliding groove are respectively formed in the first sliding surface and the second sliding surface along the self-inclined directions; the clamping device is characterized in that clamping blocks are respectively arranged on the first sliding surface and the second sliding surface, the upper surfaces of the clamping blocks are horizontally arranged, clamping plates are arranged on the upper surfaces of the clamping blocks, which are far away from one side, and the bottoms of the clamping blocks respectively slide in the first sliding groove and the second sliding groove. The application has the effect of improving the safety.
Description
Technical Field
The application relates to the field of building construction equipment, in particular to a supporting structure for supporting a small box girder and a construction method thereof.
Background
In the field of construction, bridge construction is an indispensable part of the basic construction of China at present. The existing bridge is generally composed of piers and box girders, wherein vertical piers are artificially built on the ground or the bottom surface of water flow, a plurality of box girders are paved and spliced along the upper part of the bridge by utilizing large-scale construction equipment, and the box girders are supported by the bridge to complete the construction of the bridge.
In the related art, the small box girder comprises a box girder body and lug plates, wherein the lug plates are arranged above the box girder body and extend outwards, and reinforcing ribs are arranged below the lug plates. When the small box girder is built, at least three hydraulic jacks are arranged below the lug plates to support the lug plates, and the small box girder is aligned with other small box girders and installed.
Aiming at the related technologies, the inventor thinks that the jack is arranged below the lug plate, the jack only abuts against the lug plate by friction force, and the defect that when any jack is toppled, a small box girder is easy to turn over and injure workers to cause potential safety hazards exists.
Disclosure of Invention
In order to improve safety, the application provides a supporting structure for supporting a small box girder and a construction method thereof.
The support structure for supporting little case roof beam that this application provided of first aspect adopts following technical scheme:
a supporting structure for supporting a small box girder comprises a top block and a bottom block positioned below the top block, wherein a clamping assembly is arranged on the top block, and a lifting part is arranged between the bottom block and the top block; the upper part of the ejector block consists of a first sliding surface and a second sliding surface, and the first sliding surface and the second sliding surface incline to the direction away from each other from bottom to top; a first sliding groove and a second sliding groove are respectively formed in the first sliding surface and the second sliding surface along the self-inclined directions; be provided with the clamp splice on first glide plane and the second glide plane respectively, two the clamp splice upper surface is the level setting, the upper surface of clamp splice inlays to establish and rolls there is the ball, the upper surface that one side was kept away from each other to the clamp splice is provided with splint, two the bottom of clamp splice slides respectively in first spout and second spout.
Through adopting above-mentioned technical scheme, it has lubricating oil and forms the oil film to drip on first glide plane and second glide plane, places between the clamp splice when the little case roof beam, and the little case roof beam supports in the upper surface of ball, and the clamp splice is pressed to the weight of little case roof beam, and two clamp splices move down, and two clamp splice slide along first glide plane and second glide plane respectively, and two clamp splice are close to each other, and the ball rotates this moment. The two clamping plates clamp the small box girder. The two clamping plates clamp the small box girder through the weight of the small box girder, so that the stability of the small box girder on the supporting structure is improved, the possibility of side turning of the small box girder is reduced, and the safety is improved. The moving directions of the two clamping blocks are limited through the first sliding groove and the second sliding groove, and the stability of the structure is improved.
Optionally, the lifting part comprises a guide assembly and a screw rod, the screw rod vertically penetrates through and is rotatably connected to the lower surface of the top block, and the bottom end of the screw rod penetrates through and is in threaded connection with the bottom block; the guide assembly is used for limiting the moving direction between the bottom block and the top block.
Through adopting above-mentioned technical scheme, through the moving direction of direction subassembly restriction bottom block and kicking block, rotate the lead screw, lead screw and bottom block threaded connection order about the kicking block and the bottom block and be close to each other or keep away from, and the axial bearing capacity of lead screw is big, the simple structure of lead screw, and it is convenient to make.
Optionally, a driving assembly is arranged between the two clamping blocks, the driving assembly includes two driving screws, the two driving screws are respectively arranged along the length directions of the first chute and the second chute, and the two driving screws respectively penetrate through the two clamping blocks and are in threaded connection with the two clamping blocks; one end of each driving screw rod, which is close to each other, is provided with a transmission assembly; the drive screw is a ball screw.
By adopting the technical scheme, after the small box girder is supported above the clamping blocks, the two clamping blocks are driven to be close to each other under the action of the gravity of the small box girder, and at the moment, the two driving screws rotate; when the two clamping plates are abutted to the small box girder, the two driving screws are not moved. The driving screw is a ball screw, so that the self-locking function is not provided, and the moving stability of the two clamping blocks when the two clamping blocks are close to each other is improved. And the two driving screws are continuously rotated to drive the two clamping plates to continuously approach each other and clamp the small box girder, and the two clamping plates further clamp the small box girder to improve the stability of the small box girder on the supporting structure and improve the safety.
Optionally, the transmission assembly includes a small bevel gear and a large bevel gear, the small bevel gear is provided with two gears and is respectively connected to one end of the two driving screws close to each other in a coaxial rotating manner, the large bevel gear is connected in the top block in a rotating manner, and the small bevel gear is meshed with the large bevel gear.
By adopting the technical scheme, when the large bevel gear is rotated, the large bevel gear is meshed with the two small bevel gears to drive the two driving screws to rotate, and the large bevel gear is rotated to drive the two driving screws to synchronously rotate, so that the displacement distances of the two clamping blocks are the same, and the stability of clamping the small box girder on the supporting structure is improved.
Optionally, the large bevel gear and the screw rod are coaxially arranged, a friction assembly is arranged between the large bevel gear and the screw rod, the friction assembly comprises a friction rod and a friction sleeve, the friction rod is coaxially arranged at one end of the large bevel gear close to the screw rod, the friction sleeve is coaxially arranged at one end of the screw rod close to the large bevel gear, and the friction rod is rotatably connected in the friction sleeve.
By adopting the technical scheme, when the screw rod is rotated to lift the jacking block, the screw rod drives the friction sleeve to rotate, the friction sleeve and the friction rod rub to drive the large bevel gear to rotate, the large bevel gear drives the two driving screws through the small bevel gear to drive the two clamping plates to clamp the small box girder, and when the two clamping plates clamp the small box girder and cannot move continuously, the two driving screws stop rotating. When the height needs to be continuously raised, the screw rod drives the friction sleeve to continuously rotate, and the friction rod rubs in the friction sleeve. When the screw rod is rotated, the clamping plates can be driven to clamp the small box girder, and the possibility that the two clamping plates are separated from the small box girder is reduced under the action of the friction sleeve and the friction rod. The stability of the clamping is improved. And meanwhile, the screw rod can be freely lifted or lowered.
Optionally, the guide assembly includes at least one guide rod, the guide rod is vertically arranged on the lower surface of the top block, and the guide rod penetrates through and is slidably connected to the upper surface of the bottom block.
Through adopting above-mentioned technical scheme, when rotating the lead screw and ordering about kicking block and bottom block and being close to each other or keeping away from, the guide arm slides in the bottom block, through the moving direction of guide arm restriction kicking block and bottom block, reduces the rotatory possibility of axis of kicking block or bottom block along the lead screw simultaneously, improves the stability of structure.
Optionally, a turntable is coaxially sleeved on the screw rod and fixed, the upper surface of the turntable is attached to and slides on the lower surface of the ejector block, and a limiting part for limiting the rotation of the turntable is arranged on the ejector block.
Through adopting above-mentioned technical scheme, rotate the carousel and drive the lead screw and rotate, through the rotation of locating part restriction carousel and lead screw, fixed the distance between kicking block and the bottom block, reduce the kicking block and lead to the possibility of lead screw reversal under the weight of small box girder.
Optionally, a bottom plate is arranged on the lower surface of the bottom block, a fixing bolt vertically penetrates through the upper surface of the bottom plate and is in threaded connection with the upper surface of the bottom plate, and one end, extending out of the fixing bolt, of the fixing bolt is used for being connected with a road surface.
Through adopting above-mentioned technical scheme, place the bottom plate on the road surface, screw up fixing bolt, wear to establish and threaded connection in road surface behind the fixing bolt run through the bottom plate. The supporting structure is fixed with the road surface through the fixing bolt, the possibility that the supporting structure and the small box girder overturn is reduced, and the safety is improved.
Optionally, an adjusting assembly is arranged on one side of one clamping block parallel to the length direction of the first sliding groove, the adjusting assembly comprises a cross rod, and a horizontal sliding groove penetrates through one side of the cross rod, which is far away from the clamping block; an adjusting bolt penetrates through one side, close to the cross rod, of the other clamping block, and the adjusting bolt slides in the sliding groove; and a plurality of circular grooves for embedding bolt heads are formed in one side of the cross rod, which is far away from the clamping block, along the length direction of the sliding groove.
By adopting the technical scheme, the adjusting bolt slides in the sliding groove of the cross rod under the natural state, after the two clamping plates clamp the small box girder, the adjusting bolt is rotated, the bolt head of the adjusting bolt is embedded into the circular groove at the corresponding position, the relative position between the two clamping blocks is fixed, and the small box girder is clamped by the two clamping plates. When the screw rod is rotated to drive the top block to be close to the bottom block, the positions of the two clamping blocks are unchanged under the action of the adjusting assembly, and the friction rod slides in the friction sleeve. The positions of the two clamping blocks are limited through the adjusting assembly, and the stability and the safety of clamping the small box girder are improved.
Second aspect the present application provides a construction method for supporting a support structure of a box girder, which adopts the following technical solution:
s100, placing four supporting structures on a road surface;
s200, fixing the supporting structure and the road surface by rotating a fixing bolt;
s300, hoisting the small box girders by using a crane and placing the small box girders on the four support structures;
s400, rotating the turntable to adjust the height of the small box girder;
s500, splicing the small box girders.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the top block is provided with a clamping assembly; the two clamping plates clamp the small box girder through the weight of the small box girder, so that the stability of the small box girder on a supporting structure is improved, the possibility of side turning of the small box girder is reduced, and the safety is improved;
2. the transmission assembly comprises a small bevel gear and a large bevel gear; when the large bevel gear is rotated, the large bevel gear is meshed with the two small bevel gears to drive the two driving screws to rotate, and the large bevel gear is rotated to drive the two driving screws to synchronously rotate, so that the displacement distances of the two clamping blocks are the same, and the stability of clamping the small box girder on the supporting structure is improved;
3. the screw rod is coaxially sleeved and fixed with a turntable; the rotating turntable drives the screw rod to rotate, the rotation of the turntable and the screw rod is limited through the limiting part, the distance between the top block and the bottom block is fixed, and the possibility that the top block causes the screw rod to rotate reversely under the weight of the small box girder is reduced.
Drawings
FIG. 1 is a schematic view of an embodiment of a support structure for supporting a box girder;
FIG. 2 is a schematic view of the overall structure of a support structure for supporting the mini-box beams shown in FIG. 1;
FIG. 3 is a schematic view, partly in section, of a support structure for supporting the mini-box beams shown in FIG. 2;
fig. 4 is an enlarged schematic view of a portion B shown in fig. 3;
FIG. 5 is an enlarged schematic view of portion A shown in FIG. 2;
fig. 6 is a flowchart of a supporting structure construction for supporting a small box girder according to an embodiment of the present application.
Description of reference numerals: 1. a box girder body; 2. an ear plate; 3. reinforcing ribs; 4. a bottom block; 5. a top block; 51. a first sliding surface; 511. a first chute; 52. a second sliding surface; 521. a second chute; 6. a guide bar; 7. a screw rod; 71. a first threaded hole; 8. a clamping assembly; 81. a clamping block; 82. a splint; 9. a base plate; 91. fixing the bolt; 10. a turntable; 101. a friction groove; 11. a limiting member; 111. a collar; 112. a bolt; 12. a drive assembly; 121. a drive screw; 122. a fixed block; 13. a second threaded hole; 14. a transmission assembly; 141. a bevel pinion gear; 142. a large bevel gear; 15. an accommodating chamber; 16. a friction assembly; 161. a friction lever; 162. a friction sleeve; 17. an adjustment assembly; 171. a cross bar; 172. adjusting the bolt; 173. a sliding groove; 174. a circular groove; 18. and a ball.
Detailed Description
The present application is described in further detail below with reference to the accompanying drawings.
The embodiment of the application discloses a supporting structure for supporting a small box girder and a construction method thereof.
Example 1
Referring to fig. 1 and 2, including the rectangle bottom block 4 of vertical setting, the top of bottom block 4 is provided with kicking block 5, is provided with lift portion between kicking block 5 and the bottom block 4, and the top of kicking block 5 is provided with centre gripping subassembly 8. The small box girder is clamped by the clamping assembly 8, and the height of the small box girder is adjusted by the lifting part to lift or lower the top block 5.
Referring to fig. 1, the small box girder includes a box girder body 1 and an ear plate 2, the ear plate 2 is disposed above the box girder body 1 and extends outward, and a reinforcing rib 3 is disposed below the ear plate 2.
Referring to fig. 2 and 3, the lifting portion includes a guiding assembly including at least one guide rod 6, in this embodiment, four guide rods 6 are provided, and the four guide rods 6 are respectively vertically welded at the corners of the lower surface of the top block 5. The guide rod 6 vertically penetrates through the upper surface of the bottom block 4, and the guide rod 6 slides in the bottom block 4. When the top block 5 and the bottom block 4 move close to or away from each other, the guide rod 6 slides in the bottom block 4.
Referring to fig. 2 and 3, the lifting part further includes a screw rod 7, and the screw rod 7 is vertically inserted through and rotatably connected to the center of the lower surface of the top block 5. The upper surface of the bottom block 4 is vertically provided with a first threaded hole 71, and the bottom end of the screw rod 7 is in threaded connection with the first threaded hole 71. Under the action of the guide assembly, when the screw rod 7 is rotated, the screw rod 7 is in threaded connection with the first threaded hole 71 on the bottom block 4, and the screw rod 7 drives the top block 5 to move along the axis direction of the first threaded hole 71.
Referring to fig. 2 and 3, a rectangular bottom plate 9 is welded to the lower surface of the bottom block 4, fixing bolts 91 vertically penetrate through corners of the upper surface of the bottom plate 9 and are in threaded connection with the corners of the upper surface of the bottom plate 9, and the bottom ends of the fixing bolts 91 extend out of the bottom plate 9. With bottom plate 9 laminating road surface, rotate fixing bolt 91, fixing bolt 91 passes the one end of bottom plate 9 and wears to establish and threaded connection in the road surface, and bottom block 4 is fixed on the road surface with kicking block 5.
Referring to fig. 2 and 3, a section of the screw rod 7 located between the bottom block 4 and the top block 5 is sleeved and welded with a disc-shaped turntable 10, and the upper surface of the turntable 10 is attached to and slides on the lower surface of the top block 5. The outer peripheral wall of carousel 10 is seted up vertical rectangle friction groove 101, and friction groove 101 just has seted up a plurality ofly evenly along the axis circumference of carousel 10. The partial turntable 10 extends outside the vertical side wall of the top block 5 in plan view. The rotary table 10 is rotated, and the rotary table 10 drives the screw rod 7 to rotate, so that manual operation is facilitated.
Referring to fig. 2, the top block 5 is provided with a stopper 11 for restricting the rotation of the turntable 10. The position-limiting member 11 includes a collar 111 and a pin 112. The collar 111 is welded to the bottom end of one of the vertical side walls of the top block 5. The plug pin 112 slides vertically in the collar 111, and the bottom end of the plug pin 112 extends to below the top block 5. The bottom end of the latch 112 is inserted into the friction groove 101 at the corresponding position on the turntable 10. When the rotary disc 10 rotates to a designated position, the bolt 112 is pulled downwards, and the bolt 112 is inserted into the friction groove 101 at the corresponding position on the rotary disc 10, so that the position of the rotary disc 10 and the height of the top block 5 are limited. In the present application, the position-limiting element 11 may also be a conventional door bolt.
Referring to fig. 2 and 3, the upper surface of the top block 5 is composed of a first sliding surface 51 and a second sliding surface 52 having the same area, and the first sliding surface 51 and the second sliding surface 52 are rectangular and have a common side. The first sliding surface 51 and the second sliding surface 52 are inclined from bottom to top in the direction away from each other, and the included angle degrees between the first sliding surface 51 and the second sliding surface 52 and the top surface of the top block 5 are the same. The clamping assembly 8 includes two clamping blocks 81, and the two clamping blocks 81 slide on the first sliding surface 51 and the second sliding surface 52, respectively. When one side of the two clamping blocks 81 far from the top block 5 is stressed, the two clamping blocks 81 are respectively matched with the first sliding surface 51 or the second sliding surface 52, and the two clamping blocks 81 are close to each other and move towards the bottom block 4.
Referring to fig. 2 and 3, the balls 18 are respectively embedded and connected to the upper surfaces of the two clamping blocks 81 in a rolling manner, and the balls 18 are arranged in two rows and three columns on the clamping blocks 81. The box girder is supported on the balls 18, and the friction between the box girder and the clamp block 81 is reduced by the balls 18. When the small box girder pushes the two clamping blocks 81 close to each other, the balls 18 rotate.
Referring to fig. 2 and 3, when the two clamping blocks 81 are respectively located at the bottom ends of the first sliding surface 51 and the second sliding surface 52, the two clamping blocks 81 are attached to each other, and at this time, the sides of the two clamping blocks 81 far away from the bottom plate 9 are flush and parallel to the bottom plate 9. An oil film is provided on one side of each of the two blocks 81 which are bonded to the first sliding surface 51 and the second sliding surface 25 to reduce friction. Rectangular clamping plates 82 are respectively and vertically welded on the sides, far away from each other, of the upper surfaces of the two clamping blocks 81, and the two clamping plates 82 are parallel to each other. When the upper surfaces of the two clamping blocks 81 bear the reinforcing ribs 3 of the small box girder, the two clamping blocks 81 and the two clamping plates 82 are close to each other, and the two clamping plates 82 clamp the reinforcing ribs 3 of the small box girder.
Referring to fig. 2 and 3, the first sliding surface 51 is provided with a first sliding groove 511 along the inclination direction of the first sliding surface 51, the second sliding surface 52 is provided with a second sliding groove 521 along the inclination direction of the second sliding surface 52, and the first sliding groove 511 and the second sliding groove 521 are dovetail grooves. The bottom ends of the two clamping blocks 81 are respectively embedded and slide in the first sliding slot 511 and the second sliding slot 521. The moving direction of the two clamping blocks 81 is limited by the first sliding chute 511 and the second sliding chute 521.
Referring to fig. 3 and 4, a driving assembly 12 is disposed between the two clamping blocks 81, the driving assembly 12 includes two driving screws 121, and the fixing blocks 122 are respectively welded at the bottom of the first sliding groove 511 and the second sliding groove 521 and at the side close to each other. The two driving screws 121 are located in the first sliding slot 511 and the second sliding slot 521 and are respectively rotatably connected to one side of the two fixing blocks 122, which is far away from each other, and the two driving screws 121 are respectively parallel to the length direction of the first sliding slot 511 and the second sliding slot 521. The two clamping blocks 81 are provided with a second threaded hole 13 at one side close to each other, and the two driving screws 121 are respectively inserted and threaded in the second threaded holes 13 at the corresponding positions. The driving screw 121 is rotated, and the driving screw 121 cooperates with the second threaded hole 13 to drive the clamping blocks 81 to approach each other.
Referring to fig. 3 and 4, the drive assembly 14 is provided at the end of the drive screws 121 adjacent to each other. The transmission assembly 14 includes two small bevel gears 141 and a large bevel gear 142, and the small bevel gears 141 are respectively coaxially welded to the ends of the two driving screws 121 close to each other. First spout 511 and second spout 521 communicate each other, and big bevel gear 142 sets up in the handing-over department of first spout 511 and second spout 521, and big bevel gear 142 and kicking block 5 rotate to be connected, and the tooth direction is up. The two small bevel gears 141 have the same number of teeth and are meshed with the large bevel gear 142, the modules of the large bevel gear 142 and the small bevel gear 141 are the same, and the number of teeth of the large bevel gear 142 is greater than that of the small bevel gear 141. The big bevel gear 142 drives the two small bevel gears 141 and the two driving screws 121 to rotate.
Referring to fig. 3 and 4, the inside of the top block 5 is provided with a cylindrical accommodation chamber 15, and the accommodation chamber 15 is coaxial with the screw rod 7. The bottom end of the large bevel gear 142 is provided with a friction assembly 16, and the friction assembly 16 comprises a friction rod 161 and a friction sleeve 162. The friction rod 161 is coaxially welded to the bottom end of the large bevel gear 142, and the friction rod 161 is rotatably connected to the top block 5 and the bottom end extends into the accommodating cavity 15. The friction sleeve 162 is coaxially welded to the top end of the screw 7. The friction sleeve 162 is coaxially sleeved on the friction rod 161. When the screw 7 rotates, the friction rod 161 is driven to rotate by the friction sleeve 162, and when the two clamping plates 82 cannot move continuously, the friction rod 161 stops rotating, at this time, the screw 7 continues to rotate, and the friction rod 161 rotates in the friction sleeve 162.
Referring to fig. 2 and 5, an adjusting assembly 17 is disposed on the clamping block 81 on the second sliding groove 173, and the adjusting assembly 17 includes a cross bar 171 and an adjusting bolt 172. The slider welded to the second sliding groove 173 of the cross bar 171 is vertical and parallel to one side wall of the second sliding groove 173. The cross bar 171 extends to one side of the other clamp block 81. A rectangular and horizontal sliding groove 173 is penetrated through a side wall of the cross bar 171 remote from the clamp block 81. An adjusting bolt 172 is arranged on the other clamping block 81 far away from the clamping block 81 provided with the cross rod 171, the adjusting bolt 172 penetrates through and is in threaded connection with one side, close to the cross rod 171, of the clamping block 81, and the adjusting bolt 172 slides in the sliding groove 173 of the cross rod 171. When the two blocks 81 move toward or away from each other, the adjusting bolt 172 slides in the sliding groove 173.
Referring to fig. 2 and 5, a circular groove 174 is formed on one side of the cross bar 171 away from the clamping block 81, and when the adjusting bolt 172 is tightened and approaches the corresponding clamping block 81, the bolt head of the adjusting bolt 172 is clamped in the circular groove 174. A plurality of circular grooves 174 are provided along the length direction of the sliding groove 173. After the two clamping plates 82 clamp the reinforcing rib 3 of the small box girder, the adjusting bolt 172 is rotated, and the bolt head of the adjusting bolt 172 is clamped in the circular groove 174 at the corresponding position.
The implementation principle of the supporting structure for supporting the small box girder in the embodiment of the application is as follows: the support structure is placed on the road surface in four groups. The supporting structure corresponds to the reinforcing rib 3 of the small box girder, the fixing bolt 91 is rotated, and the road surface is penetrated by the fixing bolt 91 penetrating through one end of the bottom plate 9.
The reinforcing rib 3 of the small box girder is placed on the balls 18 of the two clamping blocks 81, the two clamping blocks 81 are pressed downwards under the gravity of the small box girder, and the two clamping blocks 81 move along the length direction of the first sliding chute 511 and the second sliding chute 521 respectively under the action of the first sliding surface 51 and the second sliding surface 52. At this point the balls 18 rotate and the two jaws 82 grip the stiffener 3 of the small box girder.
The turntable 10 is rotated, the turntable 10 drives the screw rod 7 to rotate, the screw rod 7 is in threaded connection with the bottom block 4 to drive the top block 5 to ascend, and the top block 5 lifts the small box girder. At this time, the rotation of the screw rod 7 drives the friction sleeve 162 to rotate, the friction sleeve 162 and the friction rod 161 rub to drive the large bevel gear 142 to rotate, the large bevel gear 142 and the small bevel gear 141 are meshed to drive the two driving screws 121 to rotate, and the two driving screws 121 drive the two clamping blocks 81 to approach each other to keep clamping the reinforcing rib 3 of the small box girder.
When the top block 5 lifts the small box girder to a designated height, the adjusting bolt 172 is rotated, and the bolt head of the adjusting bolt 172 is clamped in the circular groove 174 at the corresponding position.
The bolt 112 is moved downwards, the bolt 112 is inserted into the friction groove 101 at the corresponding position on the turntable 10, the turntable 10 is limited, the turntable 10 and the screw rod 7 stop rotating, and the height of the top block 5 is limited.
Example 2
Referring to fig. 6, a construction method of a support structure for supporting a small box girder includes the steps of:
s100, placing four supporting structures on a road surface;
s200, rotating the fixing bolt 91 to enable the fixing bolt 91 to penetrate into the pavement so as to fix the supporting structure and the pavement;
s300, hoisting the small box girder by a crane and placing the reinforcing ribs 3 of the small box girder on the clamping blocks 81 of the four supporting structures;
s400, rotating the turntable 10 to adjust the height of the small box girder;
s410, inserting a pin into the friction groove 101 at the corresponding position on the turntable 10;
s420, rotating the adjusting bolt 172, and clamping the bolt head of the adjusting bolt 172 in the circular groove 174 at the corresponding position;
s500, splicing the small box girders.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (10)
1. The utility model provides a bearing structure for supporting little case roof beam which characterized in that: the device comprises a top block (5) and a bottom block (4) positioned below the top block (5), wherein a clamping assembly (8) is arranged on the top block (5), and a lifting part is arranged between the bottom block (4) and the top block (5); the upper part of the ejector block (5) consists of a first sliding surface (51) and a second sliding surface (52), and the first sliding surface (51) and the second sliding surface (52) incline to the direction away from each other from bottom to top; a first sliding groove (511) and a second sliding groove (521) are respectively arranged on the first sliding surface (51) and the second sliding surface (52) along the inclination directions of the sliding surfaces; be provided with clamp splice (81) on first glide plane (51) and second glide plane (52) respectively, two clamp splice (81) upper surface is the level setting, the upper surface of clamp splice (81) inlays to be established and rolls has ball (18), the upper surface that one side was kept away from each other in clamp splice (81) is provided with splint (82), two the bottom of clamp splice (81) slides respectively in first spout (511) and second spout (521).
2. A support structure for supporting a mini-box beam as in claim 1, wherein: the lifting part comprises a guide assembly and a screw rod (7), the screw rod (7) vertically penetrates through and is rotatably connected to the lower surface of the top block (5), and the bottom end of the screw rod (7) penetrates through and is in threaded connection with the bottom block (4); the guide assembly is used for limiting the moving direction between the bottom block (4) and the top block (5).
3. A support structure for supporting a mini-box beam as defined in claim 2, wherein: a driving assembly (12) is arranged between the two clamping blocks (81), the driving assembly (12) comprises two driving screws (121), the two driving screws (121) are respectively arranged along the length directions of the first sliding chute (511) and the second sliding chute (521), and the two driving screws (121) are respectively penetrated through and are in threaded connection with the two clamping blocks (81); one end of each driving screw rod (121) close to each other is provided with a transmission assembly (14); the drive screw (121) is a ball screw.
4. A support structure for supporting a mini-box beam as in claim 3, wherein: the transmission assembly (14) comprises a small bevel gear (141) and a large bevel gear (142), the small bevel gears (141) are arranged in two and are respectively connected to one ends, close to each other, of the two driving screw rods (121) in a coaxial rotating mode, the large bevel gear (142) is connected in the ejector block (5) in a rotating mode, and the small bevel gears (141) are meshed with the large bevel gear (142).
5. A support structure for supporting a mini-box beam as in claim 4 wherein: big bevel gear (142) and lead screw (7) coaxial arrangement, be provided with friction subassembly (16) between big bevel gear (142) and lead screw (7), friction subassembly (16) include friction lever (161) and friction cover (162), friction lever (161) coaxial setting is close to the one end of lead screw (7) in big bevel gear (142), friction cover (162) coaxial setting is close to the one end of big bevel gear (142) in lead screw (7), friction lever (161) rotate to be connected in friction cover (162).
6. A support structure for supporting a mini-box beam as defined in claim 2, wherein: the guide assembly comprises at least one guide rod (6), the guide rod (6) is vertically arranged on the lower surface of the top block (5), and the guide rod (6) penetrates through and is connected to the upper surface of the bottom block (4) in a sliding mode.
7. A support structure for supporting a mini-box beam as defined in claim 2, wherein: the lead screw (7) is coaxially sleeved with and fixed with a turntable (10), the upper surface of the turntable (10) is attached to and slides on the lower surface of the ejector block (5), and a limiting part (11) for limiting the rotation of the turntable (10) is arranged on the ejector block (5).
8. A support structure for supporting a mini-box beam as in claim 1, wherein: the lower surface of bottom block (4) is provided with bottom plate (9), the upper surface of bottom plate (9) is vertical to run through and threaded connection has fixing bolt (91), the one end that fixing bolt (91) extend is used for being connected with the road surface.
9. A support structure for supporting a mini-box beam as in claim 1, wherein: one side, parallel to the length direction of the first sliding groove (173), of the clamping block (81) is provided with an adjusting assembly (17), the adjusting assembly (17) comprises a cross rod (171), and one side, far away from the clamping block (81), of the cross rod (171) penetrates through the horizontal sliding groove (173); an adjusting bolt (172) penetrates through one side, close to the cross rod (171), of the other clamping block (81), and the adjusting bolt (172) slides in the sliding groove (173); one side of the cross rod (171) far away from the clamping block (81) is provided with a plurality of circular grooves (174) for embedding bolt heads along the length direction of the sliding groove (173).
10. A construction method using the support structure for supporting a box girder according to any one of claims 1 to 9, characterized in that: the method comprises the following steps:
s100, placing four supporting structures on a road surface;
s200, fixing the supporting structure and the road surface by rotating a fixing bolt (91);
s300, hoisting the small box girders by using a crane and placing the small box girders on the four support structures;
s400, rotating the turntable (10) to adjust the height of the small box girder;
s500, splicing the small box girders.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110544508.8A CN113215961A (en) | 2021-05-19 | 2021-05-19 | Support structure for supporting small box girder and construction method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110544508.8A CN113215961A (en) | 2021-05-19 | 2021-05-19 | Support structure for supporting small box girder and construction method thereof |
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| CN113215961A true CN113215961A (en) | 2021-08-06 |
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Application publication date: 20210806 |