Arch bridge suspender replacing device

Abstract

The utility model belongs to the technical field of bridge construction, and provides an arch bridge suspender replacing device which comprises a bearing frame, a hoisting tension system and a sliding rail traction system. A first jack oil cylinder is driven to extend and stretch a first thread temporary pull rod to transfer the load of an old suspender to suspenders on the two adjacent sides, then the old suspender can be detached and replaced, an operator can replace the suspender on a bridge floor, climbing operation is not needed, operation is convenient and safe, and after the old suspender is replaced, operation is convenient and fast. When the suspender needs to be replaced, the bottom carrying beam and the first threaded temporary pull rod are detached, the bearing frame is driven by the sliding rail traction system to move to the next suspender needing to be replaced, then the bottom carrying beam and the first threaded temporary pull rod are installed, replacement operation can be conducted again, continuous replacement of the suspender is facilitated, and the suspender replacement efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge construction, in particular to a device for replacing an arch bridge hanger rod. Background Art

[0002] A tied arch bridge combines two basic structural forms, arch and beam, to bear the load together, giving full play to the structural performance and combined effect of beam bending and arch compression. The horizontal thrust at the arch end is borne by tension rods so that the arch end supports do not generate horizontal thrust.

[0003] At present, after a certain period of use, the damaged suspension rods of a tied arch bridge need to be replaced. The existing technology mostly replaces the suspension rods by setting a jack on the bridge arch to transfer the gravity borne by the suspension rods. However, this replacement method requires replacement personnel to perform high-altitude operations, which is not only troublesome but also very dangerous. At the same time, setting a jack on the bridge arch is not convenient for continuous replacement of the suspension rods, which reduces the replacement efficiency. Therefore, in view of the above technical problems, a suspension rod replacement device for an arch bridge is proposed. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides an arch bridge hanger rod replacement device, which is convenient and safe to operate to replace the hanger rod and improves the hanger rod replacement efficiency.

[0005] An arch bridge hanger rod replacement device, characterized in that it comprises:

[0006] A bearing frame, which is used to be placed on the bridge deck, and has two ends extending to the hangers on both sides adjacent to the replacement hanger;

[0007] A weight-lifting tensioning system, comprising a bottom beam, a first threaded temporary tie rod and a first jack, wherein the bottom beam is arranged below the suspender cross beam, one end of the first threaded temporary tie rod is detachably connected to the bottom beam, the first jack is mounted on the bearing frame, and the first jack is detachably connected to the other end of the first threaded temporary tie rod; and

[0008] The slide rail traction system is connected to the bearing frame and is used to drive the bearing frame to move on the bridge deck.

[0009] The beneficial effects of the above-mentioned arch bridge hanger rod replacement device are:

[0010] By driving the first jack cylinder to extend and tension the first threaded temporary tie rod to transfer the load of the old hanger to the hangers on both adjacent sides, the old hanger can be disassembled and replaced. The operator can perform the hanger replacement operation on the bridge deck without the need for high-altitude operations, and the operation is convenient and safe. After the old hanger is replaced, the bottom beam and the first threaded temporary tie rod are removed, and the load-bearing frame is driven by the slide rail traction system to move to the next hanger to be replaced, and then the bottom beam and the first threaded temporary tie rod are installed to perform the replacement operation again, which facilitates the continuous replacement of hangers and improves the efficiency of hanger replacement.

[0011] In one embodiment, the support frame includes steel longitudinal beams, transverse connecting rods and upper cross beams; the two ends of the two groups of steel longitudinal beams extend to the hangers on both sides adjacent to the replacement hanger, the two groups of steel longitudinal beams are connected by multiple groups of transverse connecting rods, the upper cross beams are arranged at the top of the two groups of steel longitudinal beams, and the first jack is arranged on the upper cross beam.

[0012] In one embodiment, multiple groups of first threaded temporary tie rods are symmetrically arranged along the boom crossbeam, and multiple groups of first threaded temporary tie rods at both ends are respectively connected to the two ends of the bottom beam, and multiple groups of first jacks are respectively arranged corresponding to multiple groups of first threaded temporary tie rods, and multiple groups of first jacks are respectively connected to the other ends of multiple groups of first threaded temporary tie rods. Symmetrically arranging multiple groups of first threaded temporary tie rods can improve the stability of the device when transferring loads.

[0013] In one embodiment, the sliding rail traction system includes a sliding guide rail and a traction assembly; the sliding guide rail is installed on the bridge deck, and two groups are provided, and the two groups of steel longitudinal beams are respectively slidably set on the top of the two groups of sliding guide rails, and the traction assembly is set on the sliding guide rail and connected to the steel longitudinal beam to drive the steel longitudinal beam to slide.

[0014] In one embodiment, the top ends of the two groups of sliding guide rails are both provided with polytetrafluoroethylene slide plates, which can reduce the friction and wear of the steel longitudinal beam when it slides along the sliding guide rail, thereby facilitating the sliding of the steel longitudinal beam and increasing the service life of the steel longitudinal beam and the sliding guide rail.

[0015] In one embodiment, the traction assembly includes a second jack and a second threaded temporary pull rod; the second jack is installed at the front end of the sliding guide rail, a reaction steel block is provided at the rear end of the second jack, and the two ends of the second threaded temporary pull rod are respectively connected to the second jack and the front end of the steel longitudinal beam. By driving the second jack cylinder to extend, the steel longitudinal beam can be pulled to slide through the second threaded temporary pull rod, which is convenient for driving the steel longitudinal beam to slide and convenient for moving the steel longitudinal beam to correspond to the booms at different positions, thereby facilitating the continuous replacement of the booms and improving the efficiency of replacing the booms.

[0016] In one embodiment, two groups of the second jacks and the second temporary threaded tie rods are provided, and the two groups of the second jacks are respectively provided at the front ends of the two groups of the sliding guide rails, and the two ends of the two groups of the second temporary threaded tie rods are respectively connected to the two groups of the second jacks and the front ends of the two groups of the steel longitudinal beams. By providing two groups of the second jacks and two groups of the second temporary threaded tie rods, the stability of the steel longitudinal beam when sliding can be improved, and the phenomenon of displacement and derailment of the steel longitudinal beam when sliding can be avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the specific implementation of the utility model, the following will briefly introduce the drawings required for use in the specific implementation. In all the drawings, each element or part is not necessarily drawn according to the actual scale.

[0018] Figure 1 A front view of an arch bridge hanger rod replacement device provided by one embodiment of the utility model;

[0019] Figure 2 for Figure 1 A left view of an arch bridge hanger replacement device is shown.

[0020] Reference numerals:

[0021] 1. Hanging rod;

[0022] 2. Hanger beam;

[0023] 10. Carrying frame; 101. Steel longitudinal beam; 102. Transverse connecting rod; 103. Upper cross beam;

[0024] 20. Hoisting tensioning system; 201. Bottom beam; 202. First threaded temporary tie rod; 203. First jack;

[0025] 30. Sliding guide rail; 301. Second jack; 302. Reaction steel block; 303. Second threaded temporary pull rod. DETAILED DESCRIPTION

[0026] The following embodiments of the technical solution of the utility model are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and are therefore only used as examples, and cannot be used to limit the protection scope of the utility model.

[0027] See also Figure 1 , Figure 2 In one embodiment, an arch bridge hanger replacement device includes a load-bearing frame 10, a weight tensioning system 20 and a slide rail traction system.

[0028] The bearing frame 10 is used to be placed on the bridge deck, and its two ends extend to the hangers 1 on both sides adjacent to the replacement hanger 1. The weight tensioning system 20 includes a bottom beam 201, a first threaded temporary tie rod 202 and a first jack 203. The bottom beam 201 is arranged below the hanger cross beam 2, one end of the first threaded temporary tie rod 202 is detachably connected to the bottom beam 201, and the first jack 203 is installed on the bearing frame 10. The first jack 203 is detachably connected to the other end of the first threaded temporary tie rod 202. Specifically, the bearing frame 10 includes a steel longitudinal beam 101, a transverse connecting rod 102 and an upper cross beam 103. The two sets of steel longitudinal beams 101 extend at both ends to the hangers 1 on both sides adjacent to the replacement hanger 1, and the two sets of steel longitudinal beams 101 are connected by multiple sets of transverse connecting rods 102. The upper cross beam 103 is arranged at the top of the two sets of steel longitudinal beams 101, and the first jack 203 is arranged on the upper cross beam 103. An anchor plate is provided at the bottom end of the bottom beam 201, one end of the first threaded temporary tie rod 202 passes through the bottom beam 201 and the anchor plate and is fixed by a nut, an anchor plate is provided on the first jack 203, the other end of the first threaded temporary tie rod 202 passes through the first jack 203 and the anchor plate and is fixed by a nut. The bottom beam 201, the first threaded temporary tie rod 202 and the first jack 203 are fixedly assembled by nuts, and the assembly and disassembly are convenient and labor-saving.

[0029] In the above embodiment, when replacing the hanger 1, the first threaded temporary tie rod 202 can be tensioned by driving the first jack 203 cylinder to extend. By tensioning the first threaded temporary tie rod 202, the load of the old hanger 1 can be transferred to the hangers 1 on the adjacent two sides through two sets of steel longitudinal beams 101. At this time, the old hanger 1 can be disassembled and replaced, and the operator can perform the hanger 1 replacement operation on the bridge deck without the need for high-altitude operations, and the operation is convenient and safe.

[0030] On the basis of the above embodiment, further, multiple groups of first threaded temporary tie rods 202 are symmetrically arranged along the boom cross beam 2, and the multiple groups of first threaded temporary tie rods 202 at both ends are respectively connected to the two ends of the bottom beam 201, and multiple groups of first jacks 203 are arranged corresponding to the multiple groups of first threaded temporary tie rods 202, and the multiple groups of first jacks 203 are respectively connected to the other ends of the multiple groups of first threaded temporary tie rods 202. By symmetrically arranging multiple groups of first threaded temporary tie rods 202, the stability of the device when transferring the load of the old boom 1 can be improved.

[0031] See also Figure 1 , Figure 2In one embodiment, the slide rail traction system is connected to the carrier frame 10, and is used to drive the carrier frame 10 to move on the bridge deck. Specifically, the slide rail traction system includes a sliding guide rail 30 and a traction assembly; the sliding guide rail 30 is installed on the bridge deck, and is provided with two groups, and two groups of steel longitudinal beams 101 are respectively slidably arranged on the top of the two groups of sliding guide rails 30, and the traction assembly is arranged on the sliding guide rail 30 and connected to the steel longitudinal beam 101, and is used to drive the steel longitudinal beam 101 to slide. The traction assembly includes a second jack 301 and a second threaded temporary pull rod 303; the second jack 301 is installed at the front end of the sliding guide rail 30, and a reaction steel block 302 is provided at the rear end of the second jack 301, and the two ends of the second threaded temporary pull rod 303 are respectively connected to the second jack 301 and the front end of the steel longitudinal beam 101. Specifically, a fixed end anchor plate is provided at the front end of the steel longitudinal beam 101, one end of the second threaded temporary tie rod 303 passes through the fixed end anchor plate and is fixed by a nut, a tensioning end anchor plate is provided on the second jack 301, and the other end of the second threaded temporary tie rod 303 passes through the reaction steel block 302, the second jack 301 and the tensioning end anchor plate and is fixed by a nut.

[0032] In the above embodiment, the second threaded temporary pull rod 303 can be driven to move by driving the oil cylinder of the second jack 301 to extend, and the movement of the second threaded temporary pull rod 303 can drive the steel longitudinal beam 101 to slide. After the second jack 301 has reached its stroke, the oil is returned and the rod is extended again. This process is repeated to move the steel longitudinal beam 101 to the position of the next suspension rod 1 to be replaced, thereby facilitating the continuous replacement of the suspension rod 1 and improving the replacement efficiency of the suspension rod 1.

[0033] On the basis of the above embodiment, further, a polytetrafluoroethylene plate is provided at the top of each of the two sets of sliding guide rails 30. The polytetrafluoroethylene plate can reduce the friction and wear of the steel longitudinal beam 101 when sliding along the sliding guide rail 30, and the sliding of the steel longitudinal beam 101 is convenient and labor-saving, and the service life of the steel longitudinal beam 101 and the sliding guide rail 30 is increased.

[0034] On the basis of the above embodiment, further, two groups of second jacks 301 and second threaded temporary tie rods 303 are provided, and the two groups of second jacks 301 are respectively provided at the front ends of the two groups of sliding guide rails 30, and the two ends of the two groups of second threaded temporary tie rods 303 are respectively connected to the two groups of second jacks 301 and the front ends of the two groups of steel longitudinal beams 101. By providing two groups of second jacks 301 and two groups of second threaded temporary tie rods 303, the stability of the steel longitudinal beam 101 when sliding can be improved, and the phenomenon of displacement and derailment of the steel longitudinal beam 101 when sliding can be avoided.

[0035] The specific implementation of the above-mentioned arch bridge hanger rod replacement device is as follows:

[0036] The first threaded temporary tie rod 202 can be tensioned by driving the first jack 203 oil cylinder to extend. By tensioning the first threaded temporary tie rod 202, the load of the old suspension rod 1 can be transferred to the suspension rods 1 on both sides through the two sets of steel longitudinal beams 101. At this time, the old suspension rod 1 can be disassembled and replaced. The operator can replace the suspension rod 1 on the bridge deck without the need for high-altitude operations. The operation is convenient and safe. When replacing the next suspension rod 1, the bottom beam 201 and the first threaded temporary tie rod 202 are disassembled by rotating the nut, and then the second jack 30 is driven. 1 The extension of the oil cylinder can drive the second threaded temporary pull rod 303 to move, and the movement of the second threaded temporary pull rod 303 can drive the steel longitudinal beam 101 to slide. When the steel longitudinal beam 101 slides to the next boom 1 that needs to be replaced, the bottom beam 201 is installed again under the boom cross beam 2, and the bottom beam 201 and the first jack 203 are connected by the first threaded temporary pull rod 202. Finally, the oil cylinder of the first jack 203 is driven to extend to perform the boom 1 replacement operation again, which is convenient for continuous replacement of the boom 1 and improves the replacement efficiency of the boom 1.

[0037] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and specification of the present invention.

Claims

1. An arch bridge hanger rod replacement device, characterized in that: include: A bearing frame (10) is used to be placed on the bridge deck, and has two ends extending to the hanger (1) adjacent to the replacement hanger (1); A weight-lifting tensioning system (20) comprises a bottom beam (201), a first threaded temporary tie rod (202) and a first jack (203), wherein the bottom beam (201) is arranged below a suspender cross beam (2), one end of the first threaded temporary tie rod (202) is detachably connected to the bottom beam (201), the first jack (203) is mounted on the bearing frame (10), and the first jack (203) is detachably connected to the other end of the first threaded temporary tie rod (202); and A slide rail traction system is connected to the bearing frame (10) and is used to drive the bearing frame (10) to move on the bridge deck.

2. The arch bridge hanger rod replacement device according to claim 1, characterized in that: The support frame (10) comprises a steel longitudinal beam (101), a transverse connecting rod (102) and an upper cross beam (103); the two ends of the two groups of the steel longitudinal beams (101) extend to the suspension rod (1) adjacent to the two sides of the replacement suspension rod (1); the two groups of the steel longitudinal beams (101) are connected by a plurality of groups of the transverse connecting rods (102); the upper cross beam (103) is arranged at the top of the two groups of the steel longitudinal beams (101); and the first jack (203) is arranged on the upper cross beam (103).

3. The arch bridge hanger rod replacement device according to claim 2, characterized in that: A plurality of groups of the first threaded temporary tie rods (202) are symmetrically arranged along the boom crossbeam (2), and the plurality of groups of the first threaded temporary tie rods (202) at both ends are respectively connected to the two ends of the bottom beam (201), and a plurality of groups of the first jacks (203) are arranged corresponding to the plurality of groups of the first threaded temporary tie rods (202), and the plurality of groups of the first jacks (203) are respectively connected to the other ends of the plurality of groups of the first threaded temporary tie rods (202).

4. The arch bridge hanger rod replacement device according to claim 2, characterized in that: The slide rail traction system comprises a sliding guide rail (30) and a traction assembly; the sliding guide rail (30) is installed on the bridge deck and is provided in two groups, the two groups of steel longitudinal beams (101) are respectively slidably arranged on the top ends of the two groups of sliding guide rails (30), and the traction assembly is arranged on the sliding guide rail (30) and is connected to the steel longitudinal beam (101) for driving the steel longitudinal beam (101) to slide.

5. The arch bridge hanger rod replacement device according to claim 4, characterized in that: The top ends of the two groups of sliding guide rails (30) are both provided with polytetrafluoroethylene slide plates.

6. The arch bridge hanger rod replacement device according to claim 4, characterized in that: The traction assembly includes a second jack (301) and a second threaded temporary pull rod (303); the second jack (301) is installed at the front end of the sliding guide rail (30), a reaction steel block (302) is provided at the rear end of the second jack (301), and the two ends of the second threaded temporary pull rod (303) are respectively connected to the second jack (301) and the front end of the steel longitudinal beam (101).

7. The arch bridge hanger rod replacement device according to claim 6, characterized in that: The second jacks (301) and the second threaded temporary pull rods (303) are each provided in two groups, and the two groups of the second jacks (301) are respectively provided at the front ends of the two groups of the sliding guide rails (30), and the two ends of the two groups of the second threaded temporary pull rods (303) are respectively connected to the two groups of the second jacks (301) and the front ends of the two groups of the steel longitudinal beams (101).

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