CN219621609U - Steel box girder dragging device - Google Patents

Abstract

The utility model relates to a steel box girder dragging traction device, which belongs to the technical field of steel box girder construction and comprises a dragging slide rail, a plurality of jacks, a winch and a plurality of supporting slide rails, wherein the jacks are arranged on a pier, the jacks are in one-to-one correspondence with the supporting slide rails, the supporting slide rails are arranged on the jacks, a plurality of first rollers are arranged on the supporting slide rail, the dragging slide rail is erected on the plurality of first rollers, a fixing component for fixing the dragging slide rail is arranged on the supporting slide rail, a plurality of second rollers are arranged on the dragging slide rail, and the winch is arranged on the pier. The utility model has the effect that the railway and the expressway can normally run when the steel box girder is subjected to traction construction.

Description

Steel box girder dragging device

Technical Field

The utility model relates to the technical field of steel box girder construction, in particular to a steel box girder dragging device.

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. The steel box girder is usually hoisted to the bridge support in sections in the construction process, and is spliced by welding, or is hoisted to the bridge support after the welding of the steel box girder is finished.

When the bridge construction part crosses river, railway or expressway, the steel box girder construction is usually carried out by adopting a pushing method or adopting a traction steel box girder, the traction steel box girder is usually required to be erected on a bailey frame during construction, a guide girder is erected on the bailey frame, then the steel box girder is pulled by a winch to move along the guide girder, and finally the steel box girder which is moved in place is subjected to girder falling and the bailey frame and the guide girder are removed.

Aiming at the related technology, the bailey frame is usually required to be erected at the bottom of a bridge, and when the steel box girder is constructed, the erected bailey frame influences the traffic of railways and highways, and causes inconvenience to traffic.

Disclosure of Invention

In order to enable the railway and the expressway to normally operate when the steel box girder is subjected to traction construction, the utility model provides a traction device for the steel box girder.

The utility model provides a steel box girder dragging device which adopts the following technical scheme:

the utility model provides a draw gear is pulled to steel case roof beam, includes traction slide rail, a plurality of jack, hoist engine and a plurality of support slide rail, a plurality of the jack sets up on the pier, the jack with support slide rail one-to-one, the support slide rail sets up the jack, be provided with a plurality of first gyro wheels on the support slide rail, traction slide rail sets up a plurality of on the first gyro wheel, be provided with on the support slide rail and be used for fixing traction slide rail's fixed subassembly, be provided with a plurality of second gyro wheels on the traction slide rail, the hoist engine sets up on the pier.

Through adopting above-mentioned technical scheme, hang the traction slide rail to the support slide rail that is close to the pier of highway or railway one side on, install the hoist engine on the pier of highway or railway opposite side, connect the wire rope of hoist engine with traction slide rail, then start the hoist engine, the one end that the hoist engine pulling traction slide rail was set up on the support slide rail of highway or railway opposite side, then fixed subassembly is fixed with traction slide rail with support slide rail, then hang the steel case roof beam to the support slide rail of highway or railway one side on and be connected with hoist engine and steel case roof beam, the hoist engine pulling steel case roof beam removes along traction slide rail, when the steel case roof beam arrived the installation department, the jack whereabouts, the jack drives support slide rail and traction slide rail whereabouts, the steel case roof beam whereabouts is on the bridge support and is separated with traction slide rail and is taken out from the steel case roof beam bottom, thereby realize making steel case roof beam when carrying out traction construction, railway and highway can normally operate.

Optionally, the fixed subassembly includes fixed block and screw rod, the fixed block with it is articulated to support the slide rail, the confession has been seted up to traction slide rail bottom fixed block male spread groove, the screw hole has been seted up to the roof of spread groove, the one end of screw rod passes the fixed block and threaded connection are in threaded hole, the screw rod principle screw hole one end threaded connection has fixation nut.

Through adopting above-mentioned technical scheme, after the traction slide rail location, rotate the fixed block and make it insert in the spread groove, then pass the fixed block with the screw rod and with screw hole threaded connection, screw up fixation nut at the screw rod tip and make fixation nut tightly support the fixed block at last to realize supporting slide rail and traction slide rail's fixed.

Optionally, be provided with the guided way on the traction slide rail, guided way and steel case girder web butt, the guided way pass through coupling assembling with the traction slide rail is connected.

By adopting the technical scheme, the guide rail is abutted against the steel box girder web, so that the deflection or derailment of the steel box girder in the traction process is reduced, and the traction construction safety of the steel box girder is improved.

Optionally, coupling assembling includes connecting block and two installation spiral shell ms, the connection through-hole has been seted up on the connecting block, the mounting groove that supplies the connecting block to insert the guide rail has been seted up to the guide rail, the guide rail wears to be equipped with to drawing the screw rod, to drawing the screw rod to pass the connection through-hole, two installation nut respectively with to drawing screw rod both ends threaded connection and tightly support the guide rail.

Through adopting above-mentioned technical scheme, the guide rail is inserted on the connecting block, then to drawing the screw rod and pass guide rail and connecting block simultaneously to screw up the installation nut at to drawing the screw rod both ends, realized the connection of traction slide rail and guide rail.

Optionally, a protection pad is arranged on the guide rail, and the protection pad is abutted with the web plate of the steel box girder.

By adopting the technical scheme, the protection pad prevents the steel box girder from directly contacting with the guide rail in the traction process, so that the situation that the surface protection paint of the steel box girder is worn in the traction process is reduced.

Optionally, the protection pad is detachably connected with the guide rail through countersunk bolts.

By adopting the technical scheme, when the protection pad is worn, the effect that the protection pad can be replaced regularly is realized.

Optionally, two jacks are arranged on each bridge pier, and the bridge support is located between the two jacks.

Through adopting above-mentioned technical scheme, two jacks have strengthened the support to steel case roof beam to bridge support is located between the jack, receives the condition such as bridge support stops when having reduced the guide rail installation.

Optionally, temporary supports for supporting the traction slide rail are erected on two sides of the bridge pier.

By adopting the technical scheme, the temporary support strengthens the support of the traction slide rail, and reduces the situation that the traction slide rail is bent downwards and deformed due to the influence of dead weight load of the steel box girder.

In summary, the present utility model includes at least one of the following beneficial technical effects:

1. the traction slide rail on the support slide rail is pulled by the winch to be movably installed, the steel box girder is pulled by the winch to move on the traction slide rail so that the steel box girder reaches the installation position, the jack drives the support slide rail and the traction slide rail to fall back, the steel box girder falls on the bridge support and is separated from the traction slide rail, and finally the traction slide rail is pulled away from the bottom of the steel box girder, so that traction construction of the steel box girder can be realized without erecting a bailey frame on a railway and a high-speed kilometer, and the railway and a highway can also normally operate when the steel box girder is constructed;

2. the traction sliding rail is connected with the guide rail through the connecting component, so that the conditions of deflection and derailment of the steel box girder in the traction process are reduced, and the safety of traction construction of the steel box girder is improved.

Drawings

Fig. 1 is a schematic overall structure of an embodiment of the present utility model.

Fig. 2 is a schematic structural view of a support rail and a traction rail according to an embodiment of the present utility model.

Fig. 3 is an enlarged schematic view of the portion a in fig. 2.

Fig. 4 is a schematic view of a structure for embodying completion of traction erection of a steel box girder according to an embodiment of the present utility model.

Fig. 5 is an enlarged schematic view of the portion B in fig. 4.

Fig. 6 is a schematic structural diagram of an embodiment of the present utility model for embodying a connection assembly.

Fig. 7 is an enlarged schematic view of a portion C in fig. 6.

Reference numerals illustrate: 1. a steel box girder; 2. bridge piers; 3. bridge supports; 4. supporting the slide rail; 41. a jack; 42. a first roller; 5. traction slide rail; 51. a second roller; 52. a temporary support; 53. a connecting groove; 54. a threaded hole; 6. a hoist; 7. a fixing assembly; 71. a fixed block; 711. a through hole; 72. a screw; 73. a fixing nut; 8. a connection assembly; 81. a connecting block; 811. a connecting through hole; 82. installing a nut; 9. a guide rail; 91. countersunk head bolts; 92. a protective pad; 93. a mounting groove; 94. and (5) oppositely pulling the screw rod.

Detailed Description

The utility model is described in further detail below with reference to fig. 1-7.

The embodiment of the utility model discloses a steel box girder dragging device.

As shown in fig. 1, 2 and 3, a steel box girder dragging traction device comprises a dragging slide rail 5, a winch 6 and a plurality of supporting slide rails 4. Two jacks 41 are arranged on the bridge piers 2 close to two sides of the expressway, two bridge supports 3 on the bridge piers 2 are located between the two jacks 41, the jacks 41 are in one-to-one correspondence with the supporting sliding rails 4, the supporting sliding rails 4 are fixed on the jacks 41, and a plurality of first rollers 42 are arranged on the supporting sliding rails 4. The traction slide rail 5 is erected on the first roller 42 of the support slide rail 4 of the pier 2 on one side of the expressway, the traction slide rail 5 passes through between the two bridge supports 3 of the pier 2, a plurality of second rollers 51 are arranged on the traction slide rail 5, the winch 6 is arranged on the pier 2 on the other side of the expressway, and a traction rope of the winch 6 is connected with the traction slide rail 5.

As shown in fig. 4 and 5, one end of the traction slide rail 5 is erected on the first roller 42 of the support slide rail 4 of the pier 2 on one side of the highway, the other end of the traction slide rail 5 is erected on the first roller 42 of the support slide rail 4 of the pier 2 on the other side of the highway, and two fixing components 7 for fixing the traction slide rail 5 are arranged on two sides of the support slide rail 4. The both sides that are located the traction slide rail 5 directly over the support slide rail 4 are provided with coupling assembling 8, and the traction slide rail 5 that is located directly over the support slide rail 4 is connected with guided way 9 through coupling assembling 8, and the inboard of guided way 9 is connected with protection pad 92 through countersunk bolt 91 can be dismantled, and steel box girder 1 is set up on the second gyro wheel 51 of traction slide rail 5, and the web and the protection pad 92 butt of steel box girder 1. A temporary support 52 for supporting the traction slide 5 is arranged beside the bridge pier 2 near the expressway. The hauling rope of the winch 6 is connected with the steel box girder 1.

During traction construction of the steel box girder 1, the traction slide rail 5 is hoisted to the first roller 42 of the support rail on the three piers 2 on one side of the expressway, then the traction rope of the winch 6 is connected with the traction slide rail 5, the winch 6 is started, the winch 6 pulls the traction slide rail 5 to move to the support rail of the first pier 2 close to the other side of the expressway, then the traction slide rail 5 and the support slide rail 4 are fixed by the fixing component 7, the traction slide rail 5 is connected with the guide rail 9 by the connecting component 8, then the steel box girder 1 is hoisted to the second roller 51 of the traction slide rail 5 on one side of the expressway, then the traction rope of the winch 6 is connected with the steel box girder 1, the winch 6 pulls the steel box girder 1 to move along the traction slide rail 5, and the steel box girder 1 is moved to the installation position. After the steel box girder 1 is confirmed to be adjusted to the installation position, the jack 41 is started, the jack 41 drives the supporting slide rail 4 to fall back, the supporting slide rail 4 drives the traction slide rail 5 to fall back, the steel box girder 1 falls down under the action of gravity and is put on the bridge support 3 so as to separate the steel box girder 1 from the supporting slide rail 4, finally, the winch 6 is installed on the pier 2 far away from the expressway, the fixing of the traction slide rail 5 by the fixing assembly 7 is released, the connecting assembly 8 is removed so as to separate the guide rail 9 from the traction slide rail 5, and the winch 6 withdraws the supporting slide rail 4 from the bottom of the steel box girder 1, so that the traction construction of the steel box girder 1 is realized, and the expressway can be normally communicated during construction.

As shown in fig. 3 and 5, the fixing assembly 7 includes a fixing block 71 and a screw 72. The fixed block 71 is the arc piece, and the one end of fixed block 71 is articulated with one side of supporting slide rail 4, and two corresponding through-holes 711 have been seted up at the both ends of fixed block 71, and the spread groove 53 that the one end that the support slide rail 4 was kept away from to supply fixed block 71 inserts the spread groove 5 is seted up to the bottom of spread groove 5, and the screw hole 54 corresponding with through-hole 711 has been seted up to the roof of spread groove 53, and threaded connection is in threaded hole 54 behind two through-holes 711 behind the screw rod 72, and the one end that the screw rod 72 kept away from threaded hole 54 is connected with threaded connection has fixation nut 73, and fixation nut 73 tightly supports with fixed block 71.

When the traction slide rail 5 is supported on the support slide rails 4 of the bridge piers 2 on two sides of the expressway, the fixing blocks 71 are rotated to be inserted into the connecting grooves 53, then the screw 72 passes through the fixing blocks 71 and is in threaded connection with the bottoms of the traction slide rails 5, finally the fixing nuts 73 are screwed on one ends of the screw 72, which are far away from the traction slide rail 5, and the fixing nuts 73 are abutted against the fixing blocks 71, so that the traction slide rail 5 and the support slide rails 4 are fixed, and the situation that the traction slide rail 5 slides when the winch 6 pulls the steel box girder 1 is reduced.

As shown in fig. 5, 6 and 7, the connecting assembly 8 comprises a connecting block 81 and two mounting nuts 82, a connecting through hole 811 is formed in the connecting block 81, a mounting groove 93 is formed in one end, close to the traction sliding rail 5, of the guide rail 9, the connecting block 81 corresponds to the mounting groove 93 of the guide rail 9, holes are formed in two sides of the guide rail 9, the holes are communicated with the mounting groove 93 and correspond to the connecting through hole 811, the guide rail 9 is provided with a counter-pulling screw 94 in a penetrating mode through the holes, and the two mounting nuts 82 are connected to two ends of the counter-pulling screw 94 in a threaded mode respectively and tightly abut against the guide rail 9.

After the steel box girder 1 is hoisted to the supporting slide rail 4 beside the expressway, guide rails 9 are arranged at two ends of the traction slide rail 5 section right above the supporting slide rail 4, the guide rails 9 are inserted on the connecting blocks 81, then opposite-pull screws 94 simultaneously penetrate through the guide rails 9 and the connecting blocks 81, and mounting nuts 82 are screwed on two ends of the opposite-pull screws 94 and tightly abutted against the mounting nuts 82 and the guide rails 9, so that the guide rails 9 are fixed with the traction slide rail 5. After the traction construction of the steel box girder 1 is completed, the guide rail 9 is separated from the traction slide rail 5 by dismantling the connecting block 81, and finally the traction slide rail 5 is pulled away from the bottom of the steel box girder 1 by the winch 6.

The implementation principle of the embodiment of the utility model is as follows: the traction slide rail 5 is erected on the support slide rail 4 of the bridge pier 2 on one side of the expressway, then the winch 6 pulls the traction slide rail 5 to move on the support slide rail 4, one end of the traction slide rail 5 is erected on the support slide rail 4 of the bridge pier 2 on the other side of the expressway, then the fixing block 71 is inserted into the connecting groove 53 of the traction slide rail 5, the traction slide rail 5 and the fixing block 71 are fixed by the screw 72 and the fixing nut 73, the guide rail 9 is installed and fixed on two sides of the traction slide rail 5 by the connecting block 81, the steel box girder 1 is hoisted on the traction slide rail 5 of the bridge pier 2 on one side of the expressway, then the winch 6 pulls the steel box girder 1 to move the steel box girder 1 to the installation position, the jack 41 falls back to drive the support slide rail 4 and the traction slide rail 5 to fall under the action of gravity of the steel box girder 1 and is erected on the bridge support 3, and finally the winch 6 pulls the traction slide rail 5 away from the bottom of the steel box girder 1 and removes the jack 41 and the support slide rail 4, so that the traction construction of the steel box girder 1 is completed, and the steel box girder 1 can be normally hoisted on the expressway during construction.

The above embodiments are not intended to limit the scope of the present utility model, so: all equivalent changes in structure, shape and principle of the utility model should be covered in the scope of protection of the utility model.

Claims (8)

1. The utility model provides a steel case roof beam pulls draw gear which characterized in that: including traction slide (5), a plurality of jack (41), hoist engine (6) and a plurality of support slide (4), a plurality of jack (41) set up on pier (2), jack (41) with support slide (4) one-to-one, support slide (4) set up on jack (41), be provided with a plurality of first gyro wheels (42) on support slide (4), traction slide (5) set up a plurality of on first gyro wheel (42), be provided with on support slide (4) and be used for fixing fixed subassembly (7) of traction slide (5), be provided with a plurality of second gyro wheels (51) on traction slide (5), hoist engine (6) set up on pier (2).

2. A steel box girder dragging and pulling device according to claim 1, wherein: the fixing assembly (7) comprises a fixing block (71) and a screw rod (72), the fixing block (71) is hinged to the supporting sliding rail (4), a connecting groove (53) for the fixing block (71) to be inserted into is formed in the bottom of the traction sliding rail (5), a threaded hole (54) is formed in the top wall of the connecting groove (53), one end of the screw rod (72) penetrates through the fixing block (71) and is in threaded connection with the threaded hole (54), and the screw rod (72) is far away from one end of the threaded hole (54) and is in threaded connection with a fixing nut (73).

3. A steel box girder dragging and pulling device according to claim 1, wherein: the traction sliding rail (5) is provided with a guide rail (9), the guide rail (9) is abutted to the web plate of the steel box girder (1), and the guide rail (9) is connected with the traction sliding rail (5) through a connecting assembly (8).

4. A steel box girder dragging and drawing device according to claim 3, characterized in that: the connecting assembly (8) comprises a connecting block (81) and two mounting nuts (82), connecting through holes (811) are formed in the connecting block (81), mounting grooves (93) for the connecting block (81) to be inserted into the guide rail (9) are formed in the guide rail (9), opposite-pulling screws (94) are arranged in a penetrating mode in the guide rail (9), the opposite-pulling screws (94) penetrate through the connecting through holes (811), and the two mounting nuts (82) are connected with two ends of the opposite-pulling screws (94) in a threaded mode and tightly abut against the guide rail (9).

5. A steel box girder dragging and pulling device according to any one of the claims 3 or 4, characterized in that: the guide rail (9) is provided with a protection pad (92), and the protection pad (92) is abutted with the web plate of the steel box girder (1).

6. A steel box girder dragging and pulling device according to claim 5, wherein: the protection pad (92) is detachably connected with the guide rail (9) through a countersunk bolt (91).

7. A steel box girder dragging and pulling device according to claim 1, wherein: two jacks (41) are arranged on each bridge pier (2), and the bridge support (3) is positioned between the two jacks (41).

8. A steel box girder dragging and pulling device according to claim 1, wherein: the bridge pier (2) is provided with a temporary support (52) for supporting the traction slide rail (5).