Anchor ring taking device for replacing bridge suspender

Abstract

The anchor ring taking device for replacing the bridge suspender comprises a supporting foot unit, a tension rod and a jack, the two ends of the supporting foot unit are connected to two pieces of square steel in a clamped mode respectively, the two ends of the two pieces of square steel are placed on a carrying pole beam respectively, and the carrying pole beam is fixedly installed at the bottom of a bridge box girder plate. The upper end part of the supporting leg unit is propped against the bottom of the bridge box girder plate; the tensioning rod penetrates through the center of the supporting foot unit, one end of the tensioning rod is fixed to the anchor head, a jack is connected to a main body of the tensioning rod in a sleeved mode, one end of the jack abuts against the bottom of the supporting foot unit, the other end of the jack is screwed into the limiting nut through the other end of the tensioning rod, and the jack is fixed to the main body of the tensioning rod in a limited mode. The jack is connected with an oil pump vehicle through an oil pipe, and the anchor head connected and fixed to the tensioning rod is tensioned in the force application process; the utility model has the advantages of convenience in construction, no need of sealing water traffic, and safety and quickness in construction.

Description

Technical Field

[0001] The utility model belongs to the technical field of bridge hanger construction, in particular to an anchor ring removal device used for replacing bridge hangers. Background Art

[0002] With the rapid development of transportation construction in my country, cable bridges such as arch bridges, cable-stayed bridges, and suspension bridges have been widely used as large bridges in the past three decades, and the number of such bridges is still growing. The hanger is the main load-bearing component of the beam-arch composite beam bridge, and it is also the main way to transfer the deadweight of the main beam, the load of auxiliary facilities and the live load to the arch rib. When the bridge hanger reaches its design service life, it needs to be replaced. When removing the old bridge hanger, since the connection between the bridge hanger and the bottom of the bridge is fixed by an anchor, the anchor ring in the anchor must be removed when removing the bridge hanger. The existing disassembly method requires the closure of water traffic for construction, which is time-consuming and labor-intensive, and the setting of tooling is very difficult. Utility Model Content

[0003] The utility model aims to overcome the shortcomings of the prior art and provide an anchor ring removal device for replacing a bridge hanger, which is convenient to construct and does not require closure of water traffic.

[0004] The purpose of the utility model is achieved through the following technical scheme. The anchor ring removal device for replacing the bridge hanger comprises a support leg unit, a tension rod and a jack. The two ends of the support leg unit are respectively clamped on two square steels, and the two ends of the two square steels are respectively placed on a shoulder beam. The shoulder beam is installed and fixed on the bottom of the bridge box girder plate, and the upper end of the support leg unit is against the bottom of the bridge box girder plate; the tension rod passes through the center of the support leg unit, one end of the tension rod is fixed on the anchor head, and a jack is sleeved on the main body of the tension rod, one end of the jack is against the bottom of the support leg unit, and the other end of the jack is screwed into a limit nut through the other end of the tension rod, and the jack is limited and fixed on the main body of the tension rod. The jack is connected to the oil pump truck through an oil pipe, and the anchor head connected and fixed on the tension rod is tensioned during the force application process.

[0005] The beneficial effects of the utility model are as follows: compared with the prior art, by providing a support unit and a tension rod and a jack used in conjunction with the support unit, the force applied by the jack and the tension rod can loosen the anchor head and the anchor ring, that is, the anchor ring can be removed when it is loose, which has the advantages of convenient construction, no need to close water traffic, and safe and fast construction.

[0006] Preferably, the support leg unit includes a side panel and a bottom panel, and the side panel is provided with two pieces which are respectively fixed on both sides of the bottom panel by welding to form a support leg unit with an inverted door frame structure; through the arrangement of the above structure, while ensuring the strength, the manufacturing is more convenient, economical and practical, and the tensioning rod can observe the dynamic changes in time during the tensioning process.

[0007] Preferably, hooks are welded to both upper side ends of the two side panels, and the support leg unit is clamped on the two square steels through the hooks. A through hole is provided at the center of the bottom plate, and the tension rod can be inserted through the through hole. By setting the hooks, the hook between the support leg unit and the square steel is facilitated, and by setting the through hole, the insertion between the tension rod and the support leg unit is facilitated.

[0008] Preferably, the tension rod is a screw rod, one end of which is fixed to the anchor head by a threaded connection, and the other end of the tension rod is screwed to a limit nut by a threaded connection; the above-mentioned structure is arranged to facilitate the installation between the tension rod, the anchor head and the limit nut.

[0009] Preferably, the jack is a hollow hydraulic jack, the cylinder of the jack is against the bottom of the support unit, the driving sleeve of the jack is sleeved on the tension rod and against the limit nut; setting the jack as a hollow hydraulic jack facilitates the installation between the jack and the tension rod.

[0010] Preferably, the centers of the jack, the support leg unit, the tension rod and the anchor head are all on the same straight line; through the arrangement of the above structure, when the anchor head is tensioned, the forces are all on the same straight line, and the stability is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 The utility model is a schematic diagram of the structure of the anchor ring removal device.

[0012] The numbers in the accompanying drawings are: 1. support unit; 2. tension rod; 3. jack; 4. square steel; 5. shoulder beam; 6. bridge box girder plate; 7. anchor head; 8. limit nut; 11. side plate; 12. bottom plate; 13. hook; 14. through hole; 31. cylinder body; 32. driving sleeve rod. DETAILED DESCRIPTION

[0013] The utility model will be described in detail below in conjunction with the accompanying drawings: Figure 1As shown, the utility model includes a support leg unit 1, a tension rod 2 and a jack 3, the two ends of the support leg unit 1 are respectively clamped on two square steels 4, the two ends of the two square steels 4 are respectively placed on a shoulder beam 5, the shoulder beam 5 is installed and fixed at the bottom of the bridge box girder slab 6, and the upper end of the support leg unit 1 is against the bottom of the bridge box girder slab 6; the tension rod 2 passes through the center of the support leg unit 1, one end of the tension rod 2 is fixed on the anchor head 7, the main body of the tension rod 2 is sleeved with a jack 3, one end of the jack 3 is against the bottom of the support leg unit 1, the other end of the jack 3 is screwed into a limit nut 8 through the other end of the tension rod 2, and the jack 3 is limited and fixed on the main body of the tension rod 2, the jack 3 is connected to the oil pump truck through an oil pipe, and the anchor head 7 connected and fixed on the tension rod 2 is tensioned during the force application process.

[0014] The leg support unit 1 includes a side plate 11 and a bottom plate 12. The side plate 11 is provided with two pieces which are respectively fixed on both sides of the bottom plate 12 by welding to form a leg support unit 1 with an inverted door frame structure. Hooks 13 are welded to both sides of the upper ends of the two side plates 11, and the leg support unit 1 is clamped on the two square steels 4 by the hooks 13. A through hole 14 is provided in the center of the bottom plate 12, and the tension rod 2 can be inserted through the through hole 14.

[0015] The tension rod 2 is a screw rod, one end of which is fixed to the anchor head 7 by means of a threaded connection, and the other end of which is screwed to a limit nut 8 by means of a threaded connection.

[0016] The jack 3 is a hollow hydraulic jack, a cylinder 31 of the jack 3 abuts against the bottom of the leg support unit 1 , a driving sleeve rod 32 of the jack 3 is sleeved on the tension rod 2 and abuts against the limit nut 8 .

[0017] The centers of the jack 3, the support unit 1, the tension rod 2 and the anchor head 7 are all on the same straight line.

[0018] The working principle of the utility model is as follows: first, the support leg unit 1 is moved to the bottom of the anchor head 7, the two ends of the two square steels 4 are respectively placed on the shoulder pole beam 5, the support leg unit 1 is lifted by two hand-cranked hoists hung on the square steels 4, and the hook 13 of the support leg unit 1 is hung on the square steels 4; then, the tension rod 2 is suspended in the air by the hand-cranked hoist, and then the worker screws it into the lower anchor head 7 from below, the jack 3 is lifted by the hand-cranked hoist and sleeved around the tension rod 2, and the limit nut 8 is screwed on from the lower end of the tension rod 2 to limit and fix the jack 3; finally, the jack 3 is connected to the oil pump truck through the oil pipe, and after preparation is completed, the pressure unloading can be started, and there is no requirement here, as long as the anchor ring is loose and can be removed.

[0019] The above are only specific implementations of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. An anchor ring removal device for replacing a bridge suspender, comprising a support leg unit (1), a tension rod (2) and a jack (3), characterized in that: The two ends of the support leg unit (1) are respectively clamped on two square steels (4), and the two ends of the two square steels (4) are respectively placed on a shoulder beam (5), and the shoulder beam (5) is installed and fixed on the bottom of the bridge box girder plate (6), and the upper end of the support leg unit (1) is against the bottom of the bridge box girder plate (6); the tension rod (2) passes through the center of the support leg unit (1), and one end of the tension rod (2) is fixed on the anchor head (7). A jack (3) is sleeved on the main body of the support leg unit (2), one end of the jack (3) is against the bottom of the support leg unit (1), the other end of the jack (3) is screwed into the limit nut (8) through the other end of the tension rod (2), and the jack (3) is fixed on the main body of the tension rod (2) in a limited manner. The jack (3) is connected to the oil pump truck through an oil pipe, and the anchor head (7) connected and fixed on the tension rod (2) is tensioned during the force application process.

2. The anchor ring removal device for bridge hanger replacement according to claim 1 is characterized in that: The support leg unit (1) comprises a side plate (11) and a bottom plate (12); the side plate (11) is provided with two pieces which are respectively fixed to two sides of the bottom plate (12) by welding, thereby forming a support leg unit (1) with an inverted door frame structure.

3. The anchor ring removal device for bridge hanger replacement according to claim 2 is characterized in that: Hooks (13) are welded to both upper side ends of the two side panels (11), and the support leg unit (1) is clamped on the two square steels (4) through the hooks (13). A through hole (14) is provided at the center of the bottom plate (12), and the tension rod (2) can be inserted through the through hole (14).

4. The anchor ring removal device for bridge hanger replacement according to claim 1 is characterized in that: The tension rod (2) is a screw rod, one end of the tension rod (2) is fixed to the anchor head (7) by means of a threaded connection, and the other end of the tension rod (2) is screwed to a limit nut (8) by means of a threaded connection.

5. The anchor ring removal device for bridge hanger replacement according to claim 1 is characterized in that: The jack (3) is a hollow hydraulic jack, the cylinder body (31) of the jack (3) is against the bottom of the support unit (1), and the driving sleeve rod (32) of the jack (3) is sleeved on the tension rod (2) and is against the limit nut (8).

6. The anchor ring removal device for bridge hanger replacement according to claim 1 is characterized in that: The centers of the jack (3), the support leg unit (1), the tension rod (2) and the anchor head (7) are all on the same straight line.

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