Single-cantilever rail hanging support rod replacement process

Abstract

The invention relates to a single-cantilever rail crane supporting rod replacement process. The single-cantilever rail crane supporting rod replacement process is characterized by specifically comprising the following steps that S1, a process auxiliary supporting rod is installed; s2, dismounting an original supporting rod of the portal crane; s3, replacement and installation of a new supporting rod; s4, dismounting the auxiliary process support; in the replacement of the supporting rod of the single-cantilever rail crane, firstly, a process support is adopted for supporting a portal crane, then, an original supporting rod structure is cut off in a cutting mode, then, a truck crane is adopted for hoisting a new supporting rod structure to the portal crane, and the hoisting angle of the new supporting rod is designed before hoisting; and the inclination angle of the new supporting rod is basically kept consistent with the mounting angle when the new supporting rod is hoisted into the portal crane, so that the hoisting time can be effectively saved, and the replacement efficiency of the supporting rod of the rail crane is improved.

Description

Technical Field

[0001] The invention relates to the technical field of rail crane maintenance, and in particular to a single-cantilever rail crane support rod replacement process. Background Art

[0002] A plurality of struts are generally provided on the gantry frame of a track crane, through which the revolving platform is supported; after long-term use or collision with external forces, the struts are damaged and need to be replaced. Due to the support inclination angle and installation method of the struts designed on the track crane, it is difficult to accurately pull the new struts completely into the gantry frame during conventional lifting operations, and the struts are prone to collision when entering the gantry frame, which makes the operation inconvenient. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a single cantilever track support rod replacement process, which can solve the problem of inconvenient operation when replacing a general single cantilever track support rod.

[0004] In order to solve the above technical problems, the technical solution of the present invention is: a single cantilever track hanger rod replacement process, the innovation of which is: the specific replacement process is as follows: S1: Installation of process auxiliary support rods: S1.1: Measure the gap between the rotating column and the roller of the single-arm rail crane on site, use thin steel plate gaskets to fill it, and install a hand chain hoist beside the node of the support rod installed on the lower plane of the gantry crane's turntable to assist traction; S1.2: Complete the installation of process support wire rope and shackle on the ground, and the operator completes the installation of the traction rope of the hand chain hoist in coordination with the ground inside the gantry crane; S1.3: Use a truck crane to hoist the process support. During the hoisting process, first hoist the process support into the gantry crane, and then use the hand chain hoist and traction rope to pull the process support to the installation position. During the traction process, pay attention to the process support avoiding the support rod structure; S1.4: After the process support is hoisted in place, move the cylindrical frame into the gantry crane and use a jack to lift it so that the support rod is firmly attached to the bottom surface of the turntable, and then weld the node plate of the process support; at the same time, pad the space between the process support and the frame, and install the card code to fix it; S2: Removal of the original support rod of the gantry crane: S2.1: Use a climbing vehicle to install the pole lifting lugs, wire ropes and shackles on the pole to be replaced; S2.2: The mobile crane moves to the designated position, and the operator suspends the wire rope on the platform and lifts it to the top of the lifting lug of the support pole to keep the wire rope taut; S2.3: Inside the gantry crane, use the hand chain hoist to hold the inner side tightly, and first separate the upper node by carbon planing on the rotary platform, and then separate the lower node; S3: Replacement and installation of new support poles: First, measure the center of gravity of the new support pole on the new support pole, then draw a shackle installation baseline at the same angle as the installation angle of the original support pole in the direction of the axis of the center of gravity of the new support pole, and weld the shackle on the installation baseline of the hook on the outer contour of the new support pole; complete the installation of the wire rope on the ground, and connect the traction rope of the hand winch to the new support pole; then use the truck crane to lift the new support pole to the height of the original support pole; use the hand winch to drive the new support pole to move horizontally into the gantry machine, and spot weld it; and during the traction process, first install the upper node plate in place, tighten it with the hand winch, and then start the installation of the lower node; finally, remeasure the installation size of the new support pole, and weld it according to the requirements of the drawing after confirming that it is correct; S4: Removal of auxiliary process support: Use a car crane to install the wire rope on the process support, keep the wire rope in a taut state, cut off the process support connecting plate under the turntable of the gantry crane, use a jack to lift, remove the lower pad, complete the jack pressure relief under traction, and complete the removal of the process support under manual traction.

[0005] Furthermore, in the replacement and installation of the new S3 strut, the new strut is welded at high altitude and assisted by a boarding platform. Before hoisting, safety nets need to be installed at both ends of the boarding platform, and traction ropes need to be installed on both sides of the hanging basket. During the hoisting of the auxiliary platform, it is necessary to slowly approach the bottom of the welded node plate for traction protection. After the auxiliary platform is hoisted to the designated position, the auxiliary platform and the gantry crane need to be fixed with ropes to ensure the stability of the platform during the operation. After it is firmly fixed, the node plate of the new strut is welded. After welding is completed, the weld is repaired with paint.

[0006] The advantages of the present invention are: 1) In the present invention, in the replacement of the single-cantilever track hanging support rod, the process support is first used to support the gantry machine, and then the original support rod structure is cut off, and then the new support rod structure is hoisted onto the gantry machine by a car crane. Before the hoisting, the hoisting angle of the new support rod is designed to ensure that the inclination angle of the new support rod is basically consistent with the installation angle when the new support rod is hoisted into the gantry machine, which can effectively save the hoisting time and improve the replacement efficiency of the track hanging support rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0008] Figure 1 The present invention is a flow chart of a single cantilever track hanger rod replacement process.

[0009] Figures 2 to 5 It is a state diagram of a single cantilever track hanger rod replacement process of the present invention. DETAILED DESCRIPTION

[0010] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0011] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0012] like Figures 1 to 5 A single cantilever track support rod replacement process is shown, and the specific replacement process is as follows: S1: Installation of process auxiliary support rods: S1.1: Measure the gap between the rotating column and the roller of the single-arm rail crane on site, use thin steel plate gaskets to fill it, and install a hand chain hoist beside the node of the support rod installed on the lower plane of the gantry crane's turntable to assist traction; S1.2: Complete the installation of process support wire rope and shackle on the ground, and the operator completes the installation of the traction rope of the hand chain hoist in coordination with the ground inside the gantry crane; S1.3: Use a truck crane to hoist the process support. During the hoisting process, first hoist the process support into the gantry crane, and then use the hand chain hoist and traction rope to pull the process support to the installation position. During the traction process, pay attention to the process support avoiding the support rod structure; S1.4: After the process support is hoisted in place, move the cylindrical frame into the gantry crane and use a jack to lift it so that the support rod is firmly attached to the bottom surface of the turntable, and then weld the node plate of the process support; at the same time, pad the space between the process support and the frame, and install the card code to fix it; S2: Removal of the original support rod of the gantry crane: S2.1: Use a climbing vehicle to install the pole lifting lugs, wire ropes and shackles on the pole to be replaced; S2.2: The mobile crane moves to the designated position, and the operator suspends the wire rope on the platform and lifts it to the top of the lifting lug of the support pole to keep the wire rope taut; S2.3: Inside the gantry crane, use the hand chain hoist to hold the inner side tightly, and first separate the upper node by carbon planing on the rotary platform, and then separate the lower node; S3: Replacement and installation of new support poles: First, measure the center of gravity of the new support pole on the new support pole, then draw a shackle installation baseline at the same angle as the installation angle of the original support pole in the direction of the axis of the center of gravity of the new support pole, and weld the shackle on the installation baseline of the hook on the outer contour of the new support pole; complete the installation of the wire rope on the ground, and connect the traction rope of the hand winch to the new support pole; then use the truck crane to lift the new support pole to the height of the original support pole; use the hand winch to drive the new support pole to move horizontally into the gantry machine, and spot weld it; and during the traction process, first install the upper node plate in place, tighten it with the hand winch, and then start the installation of the lower node; finally, remeasure the installation size of the new support pole, and weld it according to the requirements of the drawing after confirming that it is correct; S4: Removal of auxiliary process support: Use a car crane to install the wire rope on the process support, keep the wire rope in a taut state, cut off the process support connecting plate under the turntable of the gantry crane, use a jack to lift, remove the lower pad, complete the jack pressure relief under traction, and complete the removal of the process support under manual traction.

[0013] During the replacement and installation of the new S3 strut, the new strut is welded at high altitude and assisted by a boarding platform. Before hoisting, safety nets need to be installed at both ends of the boarding platform, and traction ropes need to be installed on both sides of the hanging basket. During the hoisting of the auxiliary platform, it is necessary to slowly approach the bottom of the welded node plate for traction protection. After the auxiliary platform is hoisted to the designated position, the auxiliary platform and the gantry crane need to be fixed with ropes to ensure the stability of the platform during the operation. After it is firmly fixed, the node plate of the new strut is welded. After welding is completed, the weld is repaired with paint. Those skilled in the art should understand that the present invention is not limited to the above-mentioned embodiments. The above-mentioned embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may be subject to various changes and improvements, and these changes and improvements shall all fall within the scope of the present invention claimed for protection.

Claims

1. A single cantilever track support rod replacement process, characterized in that: The specific replacement process is as follows: S1: Installation of process auxiliary support rods: S1.1: Measure the gap between the rotating column and the roller of the single-arm rail crane on site, use thin steel plate gaskets to fill it, and install a hand chain hoist beside the node of the support rod installed on the lower plane of the gantry crane's turntable to assist traction; S1.2: Complete the installation of process support wire rope and shackle on the ground, and the operator completes the installation of the traction rope of the hand chain hoist in coordination with the ground inside the gantry crane; S1.3: Use a truck crane to hoist the process support. During the hoisting process, first hoist the process support into the gantry crane, and then use the hand chain hoist and traction rope to pull the process support to the installation position. During the traction process, pay attention to the process support avoiding the support rod structure; S1.4: After the process support is hoisted in place, move the cylindrical frame into the gantry crane and use a jack to lift it so that the support rod is firmly attached to the bottom surface of the turntable, and then weld the node plate of the process support; at the same time, pad the space between the process support and the frame, and install the card code to fix it; S2: Removal of the original support rod of the gantry crane: S2.1: Use a climbing vehicle to install the pole lifting lugs, wire ropes and shackles on the pole to be replaced; S2.2: The mobile crane moves to the designated position, and the operator suspends the wire rope on the platform and lifts it to the top of the lifting lug of the support pole to keep the wire rope taut; S2.3: Inside the gantry crane, use the hand chain hoist to hold the inner side tightly, and first separate the upper node by carbon planing on the rotary platform, and then separate the lower node; S3: Replacement and installation of new struts: First, measure the center of gravity of the new struts on the new struts, then draw a shackle installation baseline at the same angle as the installation angle of the original struts in the direction of the axis of the center of gravity of the new struts, and weld the shackles on the hook installation baseline on the outer contour of the new struts; Complete the installation of the wire rope on the ground, and connect the traction rope of the hand chain hoist to the new support pole; then use the truck crane to hoist the new support pole to the height of the original support pole; use the hand chain hoist to drive the new support pole to move horizontally into the gantry machine, and fix it with spot welding; and during the traction process, first install the upper node plate in place, tighten it with the hand chain hoist, and then start the installation of the lower node; finally, re-measure the installation size of the new support pole, and weld it according to the requirements of the drawing after confirming that it is correct; S4: Removal of auxiliary process support: Use a car crane to install the wire rope on the process support, keep the wire rope in a taut state, cut off the process support connecting plate under the turntable of the gantry crane, use a jack to lift, remove the lower pad, complete the jack pressure relief under traction, and complete the removal of the process support under manual traction.

2. A single cantilever rail hanger rod replacement process according to claim 1, characterized in that: During the replacement and installation of the new S3 strut, the new strut is welded at high altitude and assisted by a boarding platform. Before hoisting, safety nets need to be installed at both ends of the boarding platform, and traction ropes need to be installed on both sides of the hanging basket. During the hoisting of the auxiliary platform, it is necessary to slowly approach the bottom of the welded node plate for traction protection. After the auxiliary platform is hoisted to the designated position, the auxiliary platform and the gantry crane need to be fixed with ropes to ensure the stability of the platform during the operation. After it is firmly fixed, the node plate of the new strut is welded. After welding is completed, the weld is repaired with paint.

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