Device for dismantling temporary steel support of high pier of bridge

Abstract

According to the device for dismantling the temporary steel support of the high bridge pier, the high bridge pier comprises a bridge pier, a bridge pier cross beam and the temporary steel support, and the temporary steel support is arranged below the bridge pier cross beam; the device for dismantling the temporary steel support of the high pier of the bridge comprises a transverse tensioning lifting mechanism and a longitudinal tensioning lifting mechanism, and the transverse tensioning lifting mechanism is arranged between the two ends of the bridge pier and the temporary steel support in the horizontal direction. The transverse tensioning lifting mechanism is used for transversely fixing the temporary steel support during dismantling and pulling and lowering the middle temporary steel support from the side after dismantling; the longitudinal tensioning lifting mechanism is arranged between the bridge pier cross beam and the temporary steel support in the vertical direction, and the longitudinal tensioning lifting mechanism is used for longitudinally fixing the temporary steel support in the dismantling process and dragging the temporary steel support in the descending process from the upper portion after dismantling. The device can assist in safe dismantling of the temporary steel support, and is simple in equipment and easy and convenient to operate.

Description

Technical Field

[0001] The utility model relates to a temporary steel support for a high bridge pier, in particular to a device for dismantling the temporary steel support for a high bridge pier, belonging to the technical field of bridge construction. Background Art

[0002] As is known, in order to ensure the stability of the piers themselves, temporary horizontal steel supports are provided for the high piers of super-large bridges during the construction process. After the construction of the permanent pier cross beam is completed, the temporary steel supports need to be removed.

[0003] However, the current demolition work has become very difficult and dangerous due to the heavy weight of the steel supports and the interference of the upper space by the permanent pier beams. Summary of the invention

[0004] In order to overcome the above-mentioned deficiencies in the prior art, the utility model provides a device for dismantling temporary steel supports of high bridge piers, which can assist in the safe dismantling of temporary steel supports and has simple equipment and easy operation.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] A device for dismantling temporary steel supports for high bridge piers, the high bridge piers comprising piers and pier cross beams and temporary steel supports connected between the piers, the temporary steel supports being arranged below the pier cross beams; the device for dismantling temporary steel supports for high bridge piers comprising a transverse tensioning lifting mechanism and a longitudinal tensioning lifting mechanism, the transverse tensioning lifting mechanism being arranged between the piers and the two ends of the temporary steel supports in the horizontal direction, the transverse tensioning lifting mechanism being used to laterally fix the temporary steel supports during dismantling and to laterally securely lower the temporary steel supports after dismantling; the longitudinal tensioning lifting mechanism being arranged between the pier cross beams and the temporary steel supports in the vertical direction, the longitudinal tensioning lifting mechanism being used to longitudinally fix the temporary steel supports during dismantling and to pull the temporary steel supports from above during dismantling.

[0007] As a further improvement of the technical solution, the longitudinal tensioning lifting mechanism includes a plurality of winches evenly distributed and fixed on the pier crossbeam, the lifting wire rope of the winch is fixedly connected to the temporary steel support, and the lifting wire rope is tensioned before the demolition construction and released after the demolition is completed.

[0008] As a further improvement of the technical solution, the longitudinal tensioning lifting mechanism also includes a guide frame provided on each of the winches, and the guide frame is fixedly connected to the side of the pier crossbeam and is located below the winch.

[0009] As a further improvement of the technical solution, the guide frame includes an angle frame body and a rotating component. The angle frame body is fixedly connected to the pier beam through an edge, and the rotating component is installed at the corner of the angle frame body and is in rolling contact with the lifting wire rope.

[0010] As a further improvement of the technical solution, the lateral tensioning lifting mechanism includes manual rope assemblies arranged at the four corners where the temporary steel support is connected to the bridge pier, and the two ends of the manual rope assembly are respectively fixedly connected to the bridge pier and the temporary steel support.

[0011] As a further improvement of the technical solution, the transverse tensioning lifting mechanism also includes a working platform, which is arranged around the pier and corresponds to the position of the manual rope assembly.

[0012] As a further improvement of the present technical solution, the working platform includes a plurality of industrial steel supports radially arranged on the periphery of the bottom of the pier, one end of the industrial steel support is fixedly connected to the pier, and the other end is fixed to a scaffolding arranged around the pier, and the surface of the industrial steel support is paved with wooden boards serving as a working surface.

[0013] As a further improvement of the technical solution, the manual rope assembly includes a hand winch and a traction wire rope, the tightening end of the hand winch is fixedly connected to the bridge pier, and the hook end of the hand winch is fixedly connected to the four corners through the traction wire rope.

[0014] As a further improvement of the technical solution, the tightening end of the hand winch is connected to the embedded hook on the pier, and the traction wire rope is tied to the temporary steel support in the horizontal direction.

[0015] Compared with the prior art, the device for dismantling temporary steel supports of high bridge piers of the utility model can produce at least the following technical advantages:

[0016] The device of the utility model is provided with a transverse tensioning lifting mechanism and a longitudinal tensioning lifting mechanism, and the temporary steel support, the bridge pier and the bridge pier cross beam are tensioned and fixed in the horizontal and vertical directions at the same time by using the two, so that the stability and safety of the temporary steel support removal process are achieved. At the same time, the longitudinal tensioning lifting mechanism can be used to tow and lower the temporary steel support after removal, and the transverse tensioning lifting mechanism can prevent the risk of falling during lowering. No large-scale lifting equipment is required, and the equipment is simple, easy to operate and highly safe. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0018] Figure 1It is a front view of an application of a device for dismantling temporary steel supports for high piers of bridges according to an embodiment of the utility model.

[0019] Figure 2 The utility model is an application side view of a device for dismantling temporary steel supports of high piers of bridges according to an embodiment of the utility model.

[0020] Figure 3 The utility model is an installation top view of a temporary steel support in a device for dismantling a temporary steel support of a high pier of a bridge according to an embodiment of the utility model.

[0021] Figure 4 A schematic structural diagram of a guide frame in a device for dismantling temporary steel supports of high piers of a bridge according to an embodiment of the utility model.

[0022] Figure 5 and Figure 6 The utility model is a schematic diagram of the structure of a working platform in a device for dismantling temporary steel supports of high piers of bridges according to an embodiment of the utility model.

[0023] Figure 7 A schematic structural diagram of a manual rope assembly in a device for dismantling temporary steel supports for high piers of a bridge according to an embodiment of the utility model.

[0024] Explanation of the meaning of the reference numerals in the figures:

[0025] 10-device for dismantling temporary steel supports for high piers of bridges; 11-lateral tensioning and lifting mechanism; 111-manual rope assembly; 1111-hand chain hoist; 1112-traction wire rope; 112-working platform; 1121-working steel support; 1122-wooden board; 1123-scaffolding; 12-longitudinal tensioning and lifting mechanism; 121-winding machine; 1211-lifting wire rope; 122-guide frame; 1221-angle frame; 1222-rotating component; 1222-1-guide steel pulley; 1222-2-connecting steel plate;

[0026] 20-bridge high pier; 21-bridge pier; 22-bridge pier cross beam; 221-embedded hook; 222-first embedded steel plate; 223-second embedded steel plate; 23-temporary steel support. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the protection scope of the utility model.

[0028] Figures 1 to 3 A structural schematic diagram of a preferred embodiment of the utility model is shown, in which a device 10 for dismantling temporary steel supports for high bridge piers is shown. The high bridge pier 20 includes a pier 21 and a pier cross beam 22 and a temporary steel support 23 connected between the piers 21, and the temporary steel support 23 is arranged below the pier cross beam 22; the device 10 for dismantling the temporary steel supports 23 for high bridge piers includes a transverse tensioning lifting mechanism 11 and a longitudinal tensioning lifting mechanism 12, the transverse tensioning lifting mechanism 11 is arranged between the pier 21 and the two ends of the temporary steel support 23 in the horizontal direction, the transverse tensioning lifting mechanism 11 is used to transversely fix the temporary steel support 23 during dismantling and the temporary steel support 23 being lowered from the side after dismantling; the longitudinal tensioning lifting mechanism 12 is arranged between the pier cross beam 22 and the temporary steel support 23 in the vertical direction, the longitudinal tensioning lifting mechanism 12 is used to longitudinally fix the temporary steel support 23 during dismantling and the temporary steel support 23 being pulled down from the top after dismantling.

[0029] After the construction of the pier cross beam 22 is completed and reaches the designed strength, the temporary support begins to be removed. Before removal, the device 10 for removing the temporary steel support 23 of the high pier of the bridge is installed in place, that is, the longitudinal tensioning lifting mechanism 12 is first installed between the pier cross beam 22 and the temporary steel support 23 in the vertical direction, and then the transverse tensioning lifting mechanism 11 is installed between the pier 21 and the two ends of the temporary steel support 23 in the horizontal direction. Simultaneously operate the longitudinal tensioning lifting mechanism and the longitudinal tensioning lifting mechanism 12 so that the temporary steel support is tensioned to maintain the horizontal and vertical bidirectional position unchanged. On this basis, the temporary steel support 23 is removed and connected. After the removal and connection are completed, first loosen the tightening of the transverse tensioning lifting mechanism 11 to maintain the connection, and then use the longitudinal tensioning lifting mechanism 12 to pull and lower the temporary steel support 23 to the ground, and the removal operation is completed.

[0030] During the whole dismantling process, the present embodiment uses the longitudinal tension lifting mechanism 12 to replace the large-scale lifting equipment to complete the lifting action, and the equipment is simple and easy to operate. In addition, the present embodiment also solves the swing problem of the temporary steel support 23 during the dismantling process through the transverse tension lifting mechanism 11 control, and the safety is guaranteed.

[0031] In a further optional implementation of the present embodiment, the longitudinal tensioning lifting mechanism 12 includes a plurality of winches 121 evenly distributed and fixed on the pier crossbeam 22, the lifting wire rope 1211 of the winch 121 is fixedly connected to the temporary steel support 23, and the lifting wire rope 1211 is tensioned before the demolition construction and released after the demolition is completed.

[0032] In the specific implementation, four winches 121 are first arranged on the pier beam 22. More specifically, the four winches 121 are arranged at the four corners of the top surface of the pier beam 22. The winches 121 are reliably connected to the pier beam 22. The model of the winch 121 is determined according to the deadweight of the temporary steel support 23, and the lifting capacity is not less than 1 / 3-1 / 2 of the deadweight of the support. For example, a 5t-10t winch 121 can be selected. After the winch 121 is released, it is connected to the temporary steel support 23. After the four winches 121 are connected, the winches 121 are started at the same time to pre-tighten the lifting wire rope 1211 so that the wire rope is pulled up. Finally, after using the transverse tensioning lifting mechanism 11 to remove the connection between the temporary steel support 23 and the pier 21, the winch 121 is started again to synchronously and uniformly lower the temporary steel support 23 to the ground to complete the removal operation.

[0033] In a further optional implementation of the present embodiment, the longitudinal tensioning lifting mechanism 12 also includes a guide frame 122 provided on each of the winches 121 , and the guide frame 122 is fixedly connected to the side of the pier beam 22 and is located below the winch 121 .

[0034] In a further optional implementation of this embodiment, the guide frame includes an angle frame body 1221 and a rotating component 1222, the angle frame body 1221 is fixedly connected to the pier beam through the edge, and the rotating component 1222 is installed at the corner of the angle frame body 1221 and is in rolling contact with the lifting wire rope.

[0035] It is understandable that the specific structure of the guide frame 122 described in this embodiment is not limited, and can be any form of structure as long as it meets the need to guide the moving direction of the lifting wire rope 1211. When the angle frame 1221 is used, it is only necessary to install the rotating component 1222 at the position where the angle frame 1221 contacts the lifting wire rope 1211. The rotating component 1222 can be a roller, a pulley, etc., so that the rope of the winch 121 can be connected to the temporary steel support 23 after turning through the angle frame 1221. More specifically, for example, referring to Figure 4 The angle frame body 1221 of the guide frame 122 is welded into a right-angled triangle using No. 10 I-steel, one of whose right-angled sides is welded and fixed to the first embedded steel plate 222 on the side of the pier beam, and a guide steel pulley 1222-1 is set at the front end corner as a rotating component 1222, and the guide steel pulley 1222-1 is fixedly connected to the I-steel of the angle frame body 1221 through a connecting steel plate 1222-2.

[0036] In a further optional implementation of the present embodiment, the transverse tensioning lifting mechanism 11 includes a manual rope assembly 111 arranged at the four corners where the temporary steel support 23 is connected to the bridge pier 21, and the two ends of the manual rope assembly 111 are fixedly connected to the bridge pier 21 and the temporary steel support 23 respectively.

[0037] In a further optional implementation of this embodiment, the transverse tensioning lifting mechanism 11 further includes a working platform 112 , and the working platform 112 is arranged around the pier 21 and corresponds to the position of the manual rope assembly 111 .

[0038] The provision of the working platform 112 makes it easier to realize the entire demolition operation process, and mainly focuses on operations related to the connection between the temporary steel support 23 and the bridge pier 21, which can be completed more conveniently and efficiently.

[0039] In a further specific implementation of this embodiment, refer to Figure 5 and Figure 6 The working platform 112 includes a plurality of steel supports 1121 radially arranged on the periphery of the bottom of the pier 21, one end of the steel support 1121 is fixedly connected to the pier 21, and the other end is fixed to a scaffolding 1123 arranged around the pier, and the surface of the steel support 1121 is paved with a wooden board 1122 serving as a working surface.

[0040] In a specific implementation, the industrial steel support 1121 can be made of No. 10 industrial steel, and the working surface is formed by welding and fixing No. 10 industrial steel and the second embedded steel plate 223 of the pier 21, and then laying wooden boards 1122 on the surface; the steel pipes of the scaffolding 1123 are used to form a protective enclosure around it.

[0041] In a further optional implementation of the present embodiment, the manual rope assembly 111 includes a hand winch 1111 and a traction wire rope 1112, the tightening end of the hand winch 1111 is fixedly connected to the pier 21, and the hook end of the hand winch 1111 is fixedly connected to the four corners through the traction wire rope 1112.

[0042] The hand chain hoist 1111 is a common product in the prior art. This embodiment does not involve any improvement to the hand chain hoist 1111. It only needs to be selected from the prior art. Therefore, its specific structure is simplified in the figure. Since its main function in this embodiment is a rope, it is expressed in the form of lines together with the traction wire rope 1112. More specifically, the hand chain hoist 1111 can be a 3t hand chain hoist, and the traction wire rope 1112 can be a 12mm diameter wire rope.

[0043] In a further specific implementation of this embodiment, refer to Figure 7 The tightening end of the hand chain hoist 1111 is connected to the embedded hook 221 on the pier 21, and the traction wire rope 1112 is tied to the temporary steel support in the horizontal direction.

[0044] The manual rope assembly 111 is used to horizontally connect the temporary steel support 23 with the pier 21 at the four corners where the temporary steel support 23 is connected to the pier 21. The use process of the manual rope assembly 111 is: one end of the hand winch 1111 is connected to the pre-buried hook 221 on the pier 21, and one end of the traction wire rope 1112 is horizontally tied to the temporary steel support 23. After the connection is completed, the hand winch 1111 is tightened through the hand chain end to put the entire manual rope assembly 111 in a stressed state. In this way, the temporary steel support 23 can be controlled not to swing laterally after being released from the pier 21, thereby preventing damage to the operating personnel and the pier 21; after the traction wire rope 1112 and the hand winch 1111 are both tightened, the connection between the temporary steel support 23 and the pier 21 is manually removed. After the connection is released, the manual rope assembly 111 is slowly loosened at the four corners at the same time, so that the temporary steel support 23 is in a suspended non-swinging state.

[0045] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any simple modification and equivalent changes made to the above embodiments based on the technical essence of the present invention shall fall within the protection scope of the present invention.

Claims

1. A device for dismantling temporary steel supports of high bridge piers, wherein the high bridge piers include piers, pier cross beams connected between the piers, and temporary steel supports, wherein the temporary steel supports are arranged below the pier cross beams; characterized in that: The device for dismantling temporary steel supports for high bridge piers includes a transverse tensioning and lifting mechanism and a longitudinal tensioning and lifting mechanism. The transverse tensioning and lifting mechanism is arranged between the pier and the two ends of the temporary steel support in the horizontal direction. The transverse tensioning and lifting mechanism is used to laterally fix the temporary steel support during dismantling and to safely lower the temporary steel support from the side after dismantling; the longitudinal tensioning and lifting mechanism is arranged between the pier crossbeam and the temporary steel support in the vertical direction. The longitudinal tensioning and lifting mechanism is used to longitudinally fix the temporary steel support during dismantling and to pull the temporary steel support from above after dismantling.

2. The device for dismantling temporary steel supports of high bridge piers according to claim 1, characterized in that: The longitudinal tensioning lifting mechanism includes a plurality of winches evenly distributed and fixed on the pier cross beam, the lifting wire ropes of the winches are fixedly connected to the temporary steel support, and the lifting wire ropes are tensioned before the demolition construction and released after the demolition is completed.

3. The device for dismantling temporary steel supports of high bridge piers according to claim 2, characterized in that: The longitudinal tensioning lifting mechanism also includes a guide frame provided on each of the winches, wherein the guide frame is fixedly connected to the side of the pier crossbeam and is located below the winches.

4. The device for dismantling temporary steel supports of high bridge piers according to claim 3, characterized in that: The guide frame includes an angle frame body and a rotating component. The angle frame body is fixedly connected to the pier cross beam through an edge portion, and the rotating component is installed at the corner of the angle frame body and is in rolling contact with the lifting wire rope.

5. A device for dismantling temporary steel supports of high bridge piers according to claim 1, 2, 3 or 4, characterized in that: The transverse tensioning lifting mechanism includes manual rope assemblies arranged at the four corners where the temporary steel support is connected to the bridge pier, and two ends of the manual rope assembly are fixedly connected to the bridge pier and the temporary steel support respectively.

6. The device for dismantling temporary steel supports of high bridge piers according to claim 5, characterized in that: The transverse tensioning lifting mechanism also includes a working platform, which is arranged around the pier and corresponds to the position of the manual rope assembly.

7. The device for dismantling temporary steel supports of high bridge piers according to claim 6, characterized in that: The working platform includes a plurality of steel supports radially arranged on the periphery of the bottom of the pier, one end of the steel support is fixedly connected to the pier, and the other end is fixed to the scaffolding arranged around the pier. Meanwhile, the surface of the steel support is paved with wooden boards serving as a working surface.

8. The device for dismantling temporary steel supports of high bridge piers according to claim 6, characterized in that: The manual rope assembly includes a hand chain hoist and a traction wire rope. The tightening end of the hand chain hoist is fixedly connected to the bridge pier, and the hook end of the hand chain hoist is fixedly connected to the four corners through the traction wire rope.

9. The device for dismantling temporary steel supports of high bridge piers according to claim 8, characterized in that: The tightening end of the hand chain hoist is connected to the embedded hook on the pier, and the traction wire rope is tied to the temporary steel support in the horizontal direction.

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