A protection device for the arch rib of an arch bridge cut by a wire saw and its usage method

Abstract

The invention discloses a protection device for a rope saw to cut an arch rib of an arch bridge and a using method thereof, belonging to the technical field of arch bridge construction. It includes a support rail and a protection structure. The support rail includes two pieces, and the two support rails are arranged in a V shape. The support rail is bolted to the support ground. The protection structure includes a number of transverse steel pipes. The transverse steel pipes are arc-shaped steel pipes. A number of the transverse steel pipes are equally divided along the angular bisector of the included angle between the two support rails. The two ends of the transverse steel pipe are fixedly connected to the support rail. It also includes a rope saw motor. When cutting the arch rib of the arch bridge, the rope saw motor is arranged near the narrower end of the included angle between the two support rails. The rope saw motor is arranged inside the protection structure and is fixedly connected to the support ground. A protection mechanism and a travel protection cover are arranged within the range of rope saw cutting, effectively protecting the life safety of the operators.

Description

Technical Field

[0001] The present invention relates to the technical field of arch bridge structures, and particularly relates to a protection device and a using method for protecting an arch rib of an arch bridge during wire saw cutting. Background Art

[0002] China's economy has shifted from a stage of high-speed growth to a stage of high-quality development. Establishing and improving a green, low-carbon and circular economic system is an important direction and an era topic for high-quality development in the new era. For waste arch bridges, they should be demolished. During the existing process of segmentally demolishing arch bridges by wire saw, there are potential safety hazards caused by the wire saw. Whether it is the demolition of the arch rib of an arch bridge or the demolition of the main beam of an existing arch bridge, it can be demolished after wire saw cutting.

[0003] During the cutting process of the wire saw, a huge tensile force is generated. The existing wire saw protection devices and methods mainly focus on covering the wire saw motor with a simple device, which poses a serious threat to the personal safety of on-site construction workers, especially the safety of cutting personnel, and cannot effectively protect the cutting personnel in case of dangerous situations such as wire saw breakage. The huge potential safety hazards not only seriously affect the subsequent construction, but may also extend the construction period and increase the project cost. Summary of the Invention

[0004] In order to overcome the defects of the prior art, the technical problem to be solved by the present invention is to provide a protection device and a using method for protecting an arch rib of an arch bridge during wire saw cutting, so as to solve the safety problems of the surrounding environment and personnel during the process of wire saw cutting the arch rib of an arch bridge without affecting the normal operation of the wire saw.

[0005] To achieve this purpose, the present invention adopts the following technical solutions:

[0006] A protection device for protecting an arch rib of an arch bridge during wire saw cutting provided by the present invention includes a support rail and a protection structure. The support rail includes two pieces, and the two support rails are arranged in a V shape and are bolted to the supporting ground; the protection structure includes a plurality of transverse steel pipes, the transverse steel pipes are circular arc-shaped steel pipes, and a plurality of the transverse steel pipes are equally divided along the angular bisector of the included angle of the two support rails. The two ends of the transverse steel pipe are fixedly connected to the support rail; it further includes a wire saw motor. When cutting the arch rib of the arch bridge, the wire saw motor is arranged near the narrower end of the included angle of the two support rails, the wire saw motor is arranged inside the protection structure, and the wire saw motor is fixedly connected to the supporting ground.

[0007] Preferably, the protection structure further includes a longitudinal steel pipe. A sleeve is fixedly provided at the top of the transverse steel pipe along the angular bisector of the included angle of the two support rails, and the longitudinal steel pipe is inserted into the sleeve to enhance the strength of the protection structure.

[0008] Preferably, the technical solution of the present invention is that the material used for the support rail is angle steel.

[0009] Preferably, the technical solution of the present invention further includes a support pipe and a fixing pin. One end of the support pipe is fixedly connected to the side wall of the support rail, and the other end is provided with a plug hole. Through holes matching the plug holes are provided at both ends of the transverse steel pipe. Both ends of the transverse steel pipe are inserted into the support pipe, and the fixing pin is inserted into the plug hole to fix the transverse steel pipe.

[0010] Preferably, the technical solution of the present invention is that U-shaped grooves are fixedly provided at the narrower end of the included angle of the two support rails. There are two U-shaped grooves, and the two U-shaped grooves are symmetrically arranged with respect to the plane of the angle bisector of the included angle of the two support rails. It further includes a trailing edge baffle, and the trailing edge baffle is slidably connected to the U-shaped groove.

[0011] Preferably, the technical solution of the present invention is that an observation port is provided in the middle of the trailing edge baffle, an operation port is provided near the support rail on the trailing edge baffle, a protective net is provided in the observation port, and a connection hole is provided at the bottom of the trailing edge baffle to lay a circuit for the wire saw motor to further protect the staff.

[0012] A method for protecting the arch rib of an arch bridge during wire saw cutting includes the following steps: Step S00: Select a suitable position for cutting, construction, and installation of the protection device in advance, and then install and fix the support rail on the concrete support surface; Step S10: Install and fix the wire saw motor at the narrower end of the support rail; Step S20: Weld and fix the U-shaped groove at the narrower end of the support rail, install the trailing edge baffle into the U-shaped groove, and at the same time connect the circuit for the wire saw motor through the connection hole at the bottom of the trailing edge baffle; Step S30: Weld and fix the support pipe on the support rail; Step S40: Install the transverse steel pipe, insert both ends of the transverse steel pipe into the support pipe, and fix it with a fixing pin; Step S50: Insert the longitudinal steel pipe into the sleeve of the transverse steel pipe to complete the fixation of the protection structure; Step S60: Observe and operate the wire saw motor through the observation port and operation port of the trailing edge baffle, and complete all the operation procedures of the cutting personnel outside the protection device; Step S70: After completing the operation, remove and recycle the protection structure and the support rail for further recycling.

[0013] Preferably, the technical solution of the present invention is that in step S50, after the longitudinal steel pipe is inserted into the sleeve, it can be directly welded to the sleeve to further enhance the strength of the protection structure.

[0014] The beneficial effects of the present invention are:

[0015] (1) The rope saw cutting safety protection device makes full use of common structural materials, sets a protection mechanism and a travel protection cover within the rope saw cutting range, effectively protecting the life safety of operators, and has a low cost;

[0016] (2) In the present invention, the components can be recycled, saving a large amount of materials, being economical and practical;

[0017] (3) The structure is simple, the size is adjustable, the installation, disassembly and use are convenient, it can be disassembled and recycled; and the strength is reasonable, the size adaptability is strong, it can be quickly installed on site, which is extremely beneficial to quickly put into use during rope saw cutting construction. Description of the Drawings

[0018] Figure 1 is a schematic diagram of a corner structure of the rope saw cutting arch rib protection device provided in the specific embodiment of the present invention;

[0019] Figure 2 is a top view of the rope saw cutting arch rib protection device provided in the specific embodiment of the present invention;

[0020] Figure 3 is a side view of the rope saw cutting arch rib protection device provided in the specific embodiment of the present invention;

[0021] In the figure:

[0022] 1, support rail; 2, protection structure; 3, rope saw motor; 21, transverse steel pipe; 22, longitudinal steel pipe; 211, sleeve; 4, support pipe; 5, fixing pin; 41, insertion hole; 11, U-shaped groove; 6, trailing edge baffle; 61, observation port; 62, operation port; 63, connection hole. Specific Embodiments

[0023] The technical solutions of the present invention will be further described below with reference to the drawings and through specific embodiments.

[0024] As Figures 1-3As shown in the figure, this embodiment provides a protection device for the arch rib of a rope saw cutting arch bridge, which includes a support rail 1 and a protection structure 2. There are two support rails 1, and the two support rails 1 are arranged in a V shape. The support rail 1 is bolted to the support ground; the protection structure 2 includes a number of transverse steel pipes 21. The transverse steel pipes 21 are arc-shaped steel pipes. A number of transverse steel pipes 21 are equally divided along the angular bisector of the angle between the two support rails 1. The two ends of the transverse steel pipe 21 are fixedly connected to the support rail 1; it also includes a rope saw motor 3. When cutting the arch rib of the arch bridge, the rope saw motor 3 is arranged near the narrower end of the angle between the two support rails 1. The rope saw motor 3 is arranged inside the protection structure 2 and is fixedly connected to the support ground. The material used for the support rail 1 is angle steel. A simple protection structure 2 forms a protective cover, and the working range of the rope saw is placed inside the protective cover, while the cutting staff operates outside the protection mechanism 2. In this way, even when the cutting rope of the rope saw breaks, due to the protective cover formed by the protection mechanism 2, the staff can be effectively protected; at the same time, the support rail 1 and the protection structure 2 adopt a detachable structure, which can realize the recycling of materials, and is economical and practical.

[0025] To strengthen the structural strength of the protection structure 2, preferably, the protection structure 2 further includes a longitudinal steel pipe 22. A sleeve 211 is fixedly provided at the top of the transverse steel pipe 21 along the angular bisector of the angle between the two support rails 1. The longitudinal steel pipe 22 is inserted into the sleeve 211 to enhance the strength of the protection structure 2.

[0026] To make the support rail 1 and the protection structure detachable, preferably, it also includes a support pipe 4 and a fixing pin 5. One end of the support pipe 4 is fixedly connected to the side wall of the support rail 1, and the other end is provided with a socket hole 41; through holes matching the socket hole 41 are provided at both ends of the transverse steel pipe 21. Both ends of the transverse steel pipe 21 are inserted into the support pipe 4, and the fixing pin 5 is inserted into the socket hole 41 to fix the transverse steel pipe 21. In this way, while realizing the fixation of the protection structure 2, the purpose of detachable recycling is also achieved.

[0027] To further strengthen the protection of the cutting staff, preferably, U-shaped grooves 11 are fixedly provided at the narrower end of the angle between the two support rails 1. There are two U-shaped grooves 11, and the two U-shaped grooves 11 are symmetrically arranged with respect to the plane of the angular bisector of the angle between the two support rails 1; it also includes a trailing edge baffle 6. The trailing edge baffle 6 is slidably connected to the U-shaped groove 11; an observation port 61 is provided in the middle of the trailing edge baffle 6, an operation port 62 is provided near the support rail 1 on the trailing edge baffle 6. A protective net is provided at the observation port 61, and a connection hole 63 is provided at the bottom of the trailing edge baffle 6 to lay a circuit for the rope saw motor 3 to further protect the staff.

[0028] A protection device for a rope saw to cut an arch rib of an arch bridge and its usage method, including the following steps: Step S00: Select a suitable position for cutting, construction, and installation of the protection device in advance, and then install and fix the support rail 1 on the concrete support surface; Step S10: Install and fix the rope saw motor 3 at the narrower end of the support rail 1; Step S20: Weld and fix the U-shaped groove 11 at the narrower end of the support rail 1, and install the trailing edge baffle 6 into the U-shaped groove 11. At the same time, connect the circuit for the rope saw motor 3 through the connection hole 63 at the bottom of the trailing edge baffle 6; Step S30: Weld and fix the support pipe 4 on the support rail 1; Step S40: Install the transverse steel pipe 21, insert both ends of the transverse steel pipe 21 into the support pipe 4, and fix it with the fixing pin 5; Step S50: Insert the longitudinal steel pipe 22 into the sleeve 211 of the transverse steel pipe 21 to complete the fixation of the protection structure 2; Step S60: Observe and operate the rope saw motor 3 through the observation port 61 and the operation port 62 of the trailing edge baffle 6, and complete all the operation procedures of the cutting personnel outside the protection device; Step S70: After the operation is completed, remove and recycle the protection structure 2 and the support rail 1 for further recycling. The protection device used in this method has a simple structure, is easy to install and construct, and has stronger environmental adaptability.

[0029] Preferably, in step S50, after the longitudinal steel pipe 22 is inserted into the sleeve 211, it can be directly welded to the sleeve 211 to further enhance the strength of the protection structure 2.

[0030] The present invention is described through preferred embodiments. Those skilled in the art know that without departing from the spirit and scope of the present invention, various changes or equivalent replacements can be made to these features and embodiments. The present invention is not limited by the specific embodiments disclosed herein, and other embodiments falling within the scope of the claims of this application belong to the scope of protection of the present invention.

Claims

1. A protection method for the arch rib of an arch bridge by wire saw cutting, characterized in that: It includes the following steps: Step S00: Select a suitable position for cutting, construction and installation of protection devices in advance, and then install and fix the support rail (1) on the concrete support surface; Step S10: Install and fix the wire saw motor (3) at the narrower end of the support rail (1); Step S20: Weld and fix the U-shaped groove (11) at the narrower end of the support rail (1), install the trailing edge baffle (6) into the U-shaped groove (11), and connect the circuit for the wire saw motor (3) through the connection hole (63) at the bottom of the trailing edge baffle (6); Step S40: Weld and fix the support pipe (4) on the support rail (1); Step S50: Install the transverse steel pipe (21), insert both ends of the transverse steel pipe (21) into the support pipe (4), and fix it with the fixing pin (5); Step S60: Insert the longitudinal steel pipe (22) into the sleeve (211) of the transverse steel pipe (21) to complete the fixation of the protection structure (2); Step S70: Observe and operate the wire saw motor (3) through the observation port (61) and operation port (62) of the trailing edge baffle (6), and complete all the operation procedures of the cutting personnel outside the protection device; Step S80: After the operation is completed, remove and recycle the protection structure (2) and the support rail (1) for further recycling; The devices used include the support rail (1) and the protection structure (2). The support rail (1) includes two, and the two support rails (1) are arranged in a V shape. The support rail (1) is bolted to the support ground; The protection structure (2) includes a number of transverse steel pipes (21). The transverse steel pipes (21) are arc-shaped steel pipes. A number of the transverse steel pipes (21) are equally divided along the angular bisector of the included angle between the two support rails (1). Both ends of the transverse steel pipe (21) are fixedly connected to the support rail (1); It also includes a wire saw motor (3). When cutting the arch rib of the arch bridge, the wire saw motor (3) is arranged near the narrower end of the included angle between the two support rails (1). The wire saw motor (3) is arranged inside the protection structure (2), and the wire saw motor (3) is fixedly connected to the support ground.

2. According to the method for protecting the arch rib of an arch bridge by wire saw cutting according to claim 1, characterized in that: The protection structure (2) further includes a longitudinal steel pipe (22). A sleeve (211) is fixedly provided at the top of the transverse steel pipe (21) along the angular bisector of the included angle between the two support rails (1). The longitudinal steel pipe (22) is inserted into the sleeve (211) to enhance the strength of the protection structure (2).

3. The method for protecting the arch rib of an arch bridge during wire saw cutting according to claim 1, wherein ； The material used for the support rail (1) is angle steel.

4. According to the method for protecting the arch rib of an arch bridge by wire saw cutting according to claim 3, characterized in that: It also includes a support pipe (4) and a fixing pin (5). One end of the support pipe (4) is fixedly connected to the side wall of the support rail (1), and the other end is provided with a socket hole (41); Through holes that match the plug holes (41) are provided at both ends of the horizontal steel pipe (21). Both ends of the horizontal steel pipe (21) are inserted into the support pipe (4), and the fixing pin (5) is inserted into the plug hole (41) to fix the horizontal steel pipe (21).

5. The method for protecting the arch rib of an arch bridge by wire saw cutting according to claim 1, characterized in that: The narrower end of the included angle between the two support rails (1) is fixedly provided with U-shaped grooves (11). There are two U-shaped grooves (11), and the two U-shaped grooves (11) are symmetrically arranged with respect to the plane of the angle bisector of the included angle between the two support rails (1). It further includes a trailing edge baffle (6), and the trailing edge baffle (6) is slidably connected to the U-shaped groove (11).

6. The method for protecting the arch rib of an arch bridge by wire saw cutting according to claim 5, characterized in that: An observation port (61) is provided in the middle of the trailing edge baffle (6), an operation port (62) is provided at a position where the trailing edge baffle (6) is close to the support rail (1), a protective net is provided at the observation port (61), and a connection hole (63) is provided at the bottom of the trailing edge baffle (6) to lay a circuit for the wire saw motor (3) to further protect the staff.

7. The method for protecting the arch rib of an arch bridge by wire saw cutting according to claim 1, characterized in that: In step S50, after the longitudinal steel pipe (22) is inserted into the sleeve (211), it can be directly welded to the sleeve (211) to further enhance the strength of the protection structure (2).

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