CN216336302U

CN216336302U - Steel wire rope guiding device for bridge girder erection machine bridge dismantling by reverse construction method

Info

Publication number: CN216336302U
Application number: CN202122959919.1U
Authority: CN
Inventors: 许佳宇; 冯爱国; 向宇杰; 李显平; 朱建明; 彭典华; 王剑
Original assignee: Wuhan Surveying Geotechnical Research Institute Co Ltd of MCC
Current assignee: Wuhan Surveying Geotechnical Research Institute Co Ltd of MCC
Priority date: 2021-11-20
Filing date: 2021-11-20
Publication date: 2022-04-19
Anticipated expiration: 2031-11-20

Abstract

The utility model provides a steel wire rope guide device for bridge dismantling by a bridge girder erection machine reverse construction method. The wire rope guider includes the registration arm and the telescopic control tube of U type or inversion isosceles trapezoid, the both ends mouth of pipe of registration arm all is open form, telescopic control tube inserts from the mouth of pipe of one of them side of registration arm to through pulley mechanism and this side pipe body inner wall sliding connection of registration arm, be equipped with fixed establishment at the mouth of pipe of control tube, and still be equipped with drive mechanism between the registration arm, drive mechanism is including fixing winding mechanism and the haulage rope that closes on the mouth of pipe position at the control tube, the lower part at the control tube is fixed to the haulage rope lower extreme, and the upper end is convoluteed on winding mechanism to it is flexible at the intraductal removal of registration arm to drive the control tube under the effect of winding mechanism and haulage rope. The device can ensure that the steel wire rope can pass through the bridge more safely, and avoids safety accidents caused by the fact that constructors hang the steel wire rope under the bridge by using the hanging ladder during bridge dismantling construction.

Description

Steel wire rope guiding device for bridge girder erection machine bridge dismantling by reverse construction method

Technical Field

The utility model relates to a construction auxiliary tool, in particular to a steel wire rope guiding device for dismantling a T-shaped bridge by a bridge girder erection machine through a reverse construction method.

Background

The assembled prestressed T-shaped bridge has the advantages of simple structure, definite stress, convenience in installation and the like, is widely applied to the construction of small and medium-span bridges in China, and as early as the 50 th century, China builds a plurality of T-shaped bridges which play an important role in improving highway traffic in China. When a T-shaped bridge is detached, the T-shaped bridge is generally hoisted integrally through a positioning steel wire rope, two symmetrical holes which are consistent with the human body shape are formed in the bridge floor by constructors in the conventional steel wire rope positioning, and the constructors use a hanging ladder to go down to the bridge to guide the steel wire rope after the hanging ladder is hung at the holes. When the steel wire rope is positioned in the mode, the constructors going down to the bridge easily have safety accidents to cause personal injury.

Disclosure of Invention

The utility model aims to solve the safety problem of steel wire rope guiding in the existing bridge dismantling process, and provides a steel wire rope guiding device for bridge dismantling by a bridge erecting machine in a reverse method.

In order to achieve the technical purpose, the utility model provides a steel wire rope guiding device for bridge dismantling by a bridge girder erection machine in a reverse method, which is characterized in that: the wire rope guider includes the registration arm and the telescopic control tube of U type or inversion isosceles trapezoid, the both ends mouth of pipe of registration arm all is open form, telescopic control tube inserts from the mouth of pipe of one of them side of registration arm to through pulley mechanism and this side pipe body inner wall sliding connection of registration arm, be equipped with fixed establishment at the mouth of pipe of control tube, and still be equipped with drive mechanism between the registration arm, drive mechanism is including fixing winding mechanism and the haulage rope that closes on the mouth of pipe position at the control tube, the lower part at the control tube is fixed to the haulage rope lower extreme, and the upper end is convoluteed on winding mechanism to it is flexible at the intraductal removal of registration arm to drive the control tube under the effect of winding mechanism and haulage rope.

The utility model has the following excellent technical scheme: the winding mechanism comprises a rotating handle, a locking end cover, a first winding drum and a second winding drum which are symmetrically arranged on the adjusting pipe; the first winding drum and the second winding drum are both of hollow cylinder structures and are respectively connected with the pipe wall of the adjusting pipe through rotating bearings, and the rotating handle extends into the first winding drum from the port of the first winding drum, penetrates through the second winding drum and is fixedly locked through the locking end cover; the two traction ropes are symmetrically arranged on two sides of the adjusting pipe and are respectively wound on the first winding drum and the second winding drum.

The utility model has the following excellent technical scheme: when the steel wire rope guiding device is used, the steel wire rope is inserted from the port of the adjusting pipe, penetrates through the positioning pipe and then penetrates out of the other end of the positioning pipe, and a positioning ring is arranged at the end part of the steel wire rope.

The utility model has the following excellent technical scheme: the pulley mechanism comprises a fixed ring fixedly sleeved at one end part of the adjusting pipe in the positioning pipe and pulleys distributed on the fixed ring, and the pulley surface of each pulley is in sliding contact with the pipe wall of the positioning pipe; the hauling cable is fixed on the fixing ring.

The utility model has the following excellent technical scheme: the fixing mechanism is an annular fixing frame with the diameter larger than the pipe orifice of the positioning pipe; a limiting ring is arranged at the port of one end of the positioning tube inserted into the adjusting tube.

The utility model has the following excellent technical scheme: the locking end cover is a double-layer thread end cover, a thread locking cover with a thread through hole is also arranged at the outer end of the first winding drum, and a steel wire rope locking mechanism is arranged on the locking end cover and the thread locking cover; external threads with the same screwing direction are arranged at the end part of the rotating handle, the part connected with the thread locking cover and the outer end faces of the first winding drum and the second winding drum, and the rotating handle stretches into the first winding drum from the port of the first winding drum and penetrates through the second winding drum to be fixedly locked through the screwing locking end cover and the thread locking cover.

The positioning pipe is provided with a telescopic adjusting pipe at one end, a hole with the width matched with the width of the positioning pipe can be formed in the direction perpendicular to the cross section of the T-shaped bridge (namely the width direction of the bridge), the positioning pipe is driven by the telescopic adjusting pipe to be placed below the bridge, then the positioning pipe rotates 90 degrees horizontally and rotates to the direction parallel to the cross section of the bridge, then the adjusting pipe is contracted to drive the positioning pipe to ascend, so that a cavity correspondingly formed in the bridge floor at the other port of the positioning pipe is formed, then the positioning rod is fixed, the steel wire rope extends into the positioning pipe from one port of the positioning pipe, and the steel wire rope can extend out from the other end due to the fact that the steel wire rope is thick and has certain hardness, and positioning work can be carried out.

The steel wire rope stretching and retracting device is simple in structure and convenient to use, can be operated by only one person, can be stretched and retracted according to requirements, is convenient to control the length of the positioning pipe and the position of the steel wire rope outlet, and meets the working requirements; the device avoids the installation and guidance of the steel wire rope by constructors under the bridge, avoids the occurrence of safety accidents, can effectively enable the steel wire rope to reach the designated position, and is convenient for the follow-up work of the bridge dismantling machine.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of a winding mechanism of the present invention;

fig. 3 is a plan view of the pulley mechanism of the present invention;

fig. 4 is a state diagram of the use of the present invention.

In the figure: 1-positioning tube, 2-regulating tube, 3-winding mechanism, 300-rotating handle, 301-locking end cover, 302-first winding drum, 303-second winding drum, 304-rotating bearing, 305-thread locking cover, 4-pulley mechanism, 400-fixing ring, 401-pulley, 5-hauling rope, 6-fixing mechanism, 7-steel wire rope, 700-positioning ring, 8-limiting ring and 9-bridge.

Detailed Description

The utility model is further illustrated by the following figures and examples. Fig. 1 to 4 are drawings of embodiments, which are drawn in a simplified manner and are only used for the purpose of clearly and concisely illustrating the embodiments of the present invention. The following claims presented in the drawings are specific to embodiments of the utility model and are not intended to limit the scope of the claimed invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "inner", "outer", "left", "right", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, or the orientations or positional relationships that the products of the present invention are conventionally placed in use, or the orientations or positional relationships that are conventionally understood by those skilled in the art, and are used for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the equipment or elements referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

The embodiment provides a steel wire rope guiding device for bridge dismantling by a bridge girder erection machine reverse construction method, as shown in fig. 1, the steel wire rope guiding device comprises a U-shaped or inverted isosceles trapezoid positioning tube 1 and a telescopic adjusting tube 2, the width of the positioning tube 1 is matched with the width of a bridge girder 9 to be dismantled, the tube mouths of two ends of the positioning tube 1 are both open, the telescopic adjusting tube 2 is inserted from the tube mouth of one side of the positioning tube 1 and is in sliding connection with the inner wall of the tube body of the side of the positioning tube 1 through a pulley mechanism 4, the tube mouth of the adjusting tube 2 is provided with a fixing mechanism 6, the fixing mechanism 6 is an annular fixing frame with the diameter larger than that of the tube mouth of the positioning tube 1 and can be fixed on the bridge girder and provided with a hole; a limiting ring 8 is arranged at the port of one end, inserted into the adjusting pipe 2, of the positioning pipe 1, so that the adjusting pipe 2 can be prevented from being separated from the positioning pipe 1. As shown in fig. 3, the pulley mechanism 4 includes a fixing ring 400 fixedly sleeved on an end portion of the adjusting pipe 2 located in the positioning pipe 1 and four pulleys 401 uniformly distributed on the fixing ring 400, and a pulley surface of each pulley 401 is in sliding contact with a pipe wall of the positioning pipe 1; the pulley mechanism 4 effectively reduces the friction force between two pipe walls, so that the telescopic pipe is easier to operate.

The embodiment provides a steel wire rope guiding device for bridge dismantling by a bridge girder erection machine through a reverse method, as shown in fig. 1, a traction mechanism is further arranged between an adjusting pipe 2 and a positioning pipe 1, and comprises a winding mechanism 3 and a traction rope 5 which are fixed at the position of the adjusting pipe 2 close to a pipe orifice; as shown in fig. 2, the winding mechanism 3 includes a rotating handle 300, a locking end cover 301, a screw locking cover 305 with a threaded through hole, and a first winding drum 302 and a second winding drum 303 symmetrically arranged on the adjusting pipe 2; the first winding drum 302 and the second winding drum 303 are both of hollow cylinder structures and are respectively rotatably connected with the pipe wall of the adjusting pipe 2 through a rotating bearing 304, the locking end cover 301 is a double-layer threaded end cover, and a threaded locking cover 305 with a threaded through hole is arranged at the outer end of the first winding drum 302; external threads 306 with the same screwing direction are arranged on the end part of the rotating handle 300, the part connected with the thread locking cover 305 and the outer end surfaces of the first winding drum 302 and the second winding drum 303, after the rotating handle 300 extends into the second winding drum 303 from the port of the first winding drum 302 and passes through the second winding drum 303, the end part is fixedly locked through the locking end cover 301, and the position connected with the first winding drum 302 is fixedly locked through the thread locking cover 305; after being locked, the handle 300 can be rotated to drive the first winding drum 302 and the second winding drum 303 to rotate at the same time. The two traction ropes 5 are symmetrically arranged at two sides of the adjusting pipe 2, the upper ends of the two traction ropes 5 are respectively wound on the first winding drum 302 and the second winding drum 303, and the lower ends of the two traction ropes are fixed on the fixing ring 400; drive two haulage ropes 5 simultaneously through rotating handle 300 and receive and release and drive the control tube 2 and remove in registration arm 1 and stretch out and draw back to be equipped with wire rope locking mechanism 307 on the winding drum, locking mechanism 307 can be opened when normal rolling, when putting a certain position under, can avoid its arbitrary removal with the reel chucking through locking mechanism 307.

The utility model will be further explained with reference to the following specific examples, wherein the adjusting pipe 2 in the examples is an aluminum alloy pipe with an inner diameter of 12.8cm, an outer diameter of 13cm and a length of 2.2 m; the inner diameter of the positioning tube 1 is 19cm, the outer diameter is 19.5cm, the size of the positioning tube is a U-shaped steel tube with the height of two ends being 2m and the length of the bottom edge being 1.5m, and the fixing ring 400 is welded at the bottom of the adjusting tube 2 to facilitate the sliding of the telescopic tube. The angle between the designed U-shaped pipe and the vertical direction is 17 degrees. The size can be changed according to different requirements.

When the steel wire rope guide device is used, firstly, a hole with the width of 30cm multiplied by 200cm is formed in a bridge deck along the width direction of a bridge, the steel wire rope guide device is placed in the hole, and a proper hole capable of pulling out a steel wire rope is formed in the other side of the bridge deck; then, the positioning tube 1 is driven to be placed below a bridge through the telescopic adjusting tube 2, the positioning tube 1 is controlled to move downwards along the adjusting tube 2 through the winding mechanism 3, when the positioning tube 1 is completely placed below the bridge, the whole device can be rotated by 90 degrees to enable the positioning tube 1 to rotate to the direction parallel to the cross section of the bridge, then the winding mechanism 3 drives the positioning tube 1 to ascend and to be located just below a T-shaped bridge, as shown in fig. 4, the other pipe orifice of the positioning tube 1 extends out of the hole in the other side of the bridge floor, then the adjusting rod 2 is fixed through the locking mechanism, a rotating handle 300 can be detached to facilitate the penetration of a steel wire rope 7, then the steel wire rope 7 extends into one end opening of the adjusting tube 2, and can penetrate through the positioning tube 1 and extend out of the other end of the positioning tube 1 to perform positioning work due to the fact that the steel wire rope is thick and has certain hardness; for positioning convenience, a positioning ring 700 is provided at the end of the wire rope 7. The device can be used for setting different specifications according to the size of the bridge and is suitable for all bridges with the same specification and the same height and the same width of the bottom surface.

The above description is only one embodiment of the present invention, and the description is specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. The utility model provides a wire rope guider that is used for bridge girder erection machine reverse construction method to break bridge which characterized in that: the steel wire rope guiding device comprises a U-shaped or inverted isosceles trapezoid positioning tube (1) and a telescopic adjusting tube (2), the pipe orifices at the two ends of the positioning pipe (1) are open, the telescopic adjusting pipe (2) is inserted from the pipe orifice at one side of the positioning pipe (1), and is connected with the inner wall of the side pipe body of the positioning pipe (1) in a sliding way through a pulley mechanism (4), a fixing mechanism (6) is arranged at the pipe orifice of the adjusting pipe (2), a traction mechanism is arranged between the adjusting pipe and the positioning pipe (1), the traction mechanism comprises a winding mechanism (3) and a traction rope (5) which are fixed at the position of the adjusting pipe (2) close to the pipe orifice, the lower end of the traction rope (5) is fixed at the lower part of the adjusting pipe (2), the upper end is wound on the winding mechanism, and the adjusting pipe (2) is driven to move and stretch in the positioning pipe (1) under the action of the winding mechanism (3) and the traction rope (5).

2. The steel wire rope guiding device for the reverse-method bridge dismantling of the bridge erecting machine according to claim 1, wherein: the winding mechanism (3) comprises a rotating handle (300), a locking end cover (301), and a first winding drum (302) and a second winding drum (303) which are symmetrically arranged on the adjusting pipe (2); the first winding drum (302) and the second winding drum (303) are both of hollow cylinder structures and are respectively connected with the pipe wall of the adjusting pipe (2) through a rotating bearing (304), and the rotating handle (300) extends into the port of the first winding drum (302), penetrates through the second winding drum (303) and is fixedly locked through a locking end cover (301); the two traction ropes (5) are symmetrically arranged on two sides of the adjusting pipe (2), and the two traction ropes (5) are wound on the first winding drum (302) and the second winding drum (303) respectively.

3. A cable guide for use in reverse-approach bridge opening of a bridge girder erection machine according to claim 1 or 2, wherein: when the steel wire rope guiding device is used, the steel wire rope (7) is inserted into the port of the adjusting pipe (2), penetrates through the positioning pipe (1) and then penetrates out of the other end of the positioning pipe, and a positioning ring (700) is arranged at the end part of the steel wire rope (7).

4. A cable guide for use in reverse-approach bridge opening of a bridge girder erection machine according to claim 1 or 2, wherein: the pulley mechanism (4) comprises a fixing ring (400) fixedly sleeved on the end part of the adjusting pipe (2) positioned at one end in the positioning pipe (1) and pulleys (401) distributed on the fixing ring (400), and the wheel surface of each pulley (401) is in sliding contact with the pipe wall of the positioning pipe (1); the pulling rope (5) is fixed on the fixing ring (400).

5. A cable guide for use in reverse-approach bridge opening of a bridge girder erection machine according to claim 1 or 2, wherein: the fixing mechanism (6) is an annular fixing frame with the diameter larger than the pipe orifice of the positioning pipe (1); a limiting ring (8) is arranged at the port of one end of the positioning tube (1) inserted into the adjusting tube (2).

6. The steel wire rope guiding device for the reverse-method bridge dismantling of the bridge erecting machine according to the claim 2 is characterized in that: the locking end cover (301) is a double-layer threaded end cover, a threaded locking cover (305) with a threaded through hole is also arranged at the outer end of the first winding drum (302), and a steel wire rope locking mechanism (307) is arranged on the locking end cover (301) and the threaded locking cover (305); external threads (306) with the same screwing direction are arranged on the end part of the rotating handle (300), the connecting part of the rotating handle and the thread locking cover (305) and the outer end faces of the first winding drum (302) and the second winding drum (303), and the rotating handle (300) stretches into the second winding drum (303) from the port of the first winding drum (302) and is fixedly locked by screwing the locking end cover (301) and the thread locking cover (305).