Integral hoisting tool and method for upper frame assembly of power walking part of electrically-driven torpedo car

Abstract

The invention discloses an integral hoisting tool and method for an upper frame assembly of a power walking part of an electrically-driven torpedo car, one ends of three bearing slings of the hoisting tool are hooked on a crane lifting hook, the other ends of the three bearing slings are arranged at the two ends and the middle part of a transverse supporting rod, and two lifting lugs are arranged on the two sides of the front part of the upper frame assembly; one ends of the two main bearing lifting ropes are arranged at the two ends of the transverse supporting rod, the other ends of the two main bearing lifting ropes are connected with the two lifting lugs, one ends of the two lifting main ropes are hooked on a crane lifting hook, and the other ends are arranged on the two sides of the middle of the upper frame assembly. According to the method, a cable harness, a cooling water pipe and a brake pipeline on an upper frame assembly are dismounted; a hoisting tool is installed, and the lengths and directions of the slings and the hoisting ropes are straightened out and adjusted, so that the hoisting gravity center is 400 mm away from the rear side of the electric control room assembly, and the transverse supporting rods are 300 mm away from the top face of the electric control room assembly; the crane is started, and the upper frame assembly and the electric control room assembly are hoisted to a maintenance site through the hoisting tool; and after hoisting is completed, the lifting lugs are dismantled, and maintenance operation of the power walking part is implemented.

Description

Technical Field

[0001] The present invention relates to the technical field of metallurgical equipment hoisting, and in particular to an integral hoisting tool and method for an upper frame assembly of a power running gear of an electric-driven hybrid railcar. Background Art

[0002] The electric-driven hybrid railcar is the world's first electric-driven automatic running device for hybrid railcars invented in my country. The electric-driven automatic running device mainly includes a set of upper frame assemblies, a set of middle frame assemblies, a set of small frame assemblies, two sets of power bogie assemblies and an electronic control room assembly. The electronic control room assembly is located on the front side of the upper frame assembly.

[0003] When carrying out maintenance work on the power running gear of an electric-driven hybrid vehicle, it is necessary to remove the electronic control room assembly, the middle frame assembly, and the upper frame assembly in sequence, and remove the related electrical wiring, brake air circuits, positioning and distance measuring components before carrying out maintenance work on the power bogie assembly.

[0004] Therefore, the maintenance work of the power running gear of the electric-driven hybrid vehicle involves complex work schedules for disassembling and assembling parts, many operation steps, large input of operators, low operation efficiency, and electrical and lifting operations, which increases safety risks. After the assembly parts are disassembled and removed, they occupy a large maintenance site, resulting in crowded working space and difficulty in carrying out normal annual maintenance projects. According to statistics, the maintenance process requires 8 mechanical, electrical and lifting operators, the maintenance operation time is 8 hours, and the site occupied is more than 60 square meters, which seriously affects the orderly and normal operation of the electric-driven hybrid vehicle and increases the cost of maintenance operations. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide an overall lifting tool and method for the upper frame assembly of the power running gear of an electric-driven hybrid vehicle. The lifting tool and method overcome the defects of the traditional maintenance operation of the power running gear of an electric-driven hybrid vehicle, implement the overall lifting of the upper frame assembly, reduce the steps of disassembly of the assembly, reduce construction risks, improve work efficiency, reduce the site occupied area, and ensure the normal operation of the electric-driven hybrid vehicle.

[0006] In order to solve the above technical problems, the overall lifting tooling of the upper frame assembly of the power running part of the electric-driven hybrid car of the present invention includes a crane hook, a transverse strut, three load-bearing slings, two main load-bearing lifting ropes, two lifting main ropes and two lifting ears, one end of the three load-bearing slings is hooked on the crane hook, and the other end is arranged on the two ends and the middle part of the transverse strut through a transition load-bearing shackle, the two lifting ears are respectively arranged on both sides of the steel structure at the front of the upper frame assembly, one end of the two main load-bearing lifting ropes is respectively arranged on the two ends of the transverse strut through a transition load-bearing shackle, and the other end is connected to the two lifting ears, one end of the two lifting main ropes is hooked on the crane hook, and the other end is arranged on both sides of the steel structure in the middle of the upper frame assembly through a load-bearing shackle.

[0007] Furthermore, the transverse support rod is a square steel tube with a cross-section of 200 mm×200 mm, and the length of the transverse support rod is greater than the width of the electric control room assembly located at the front of the upper frame assembly.

[0008] Furthermore, the lifting ear includes a bottom plate, an ear plate and a reinforcing rib plate, wherein the ear plate is centrally arranged on the bottom plate, and the reinforcing rib plate is vertically arranged between the bottom plate and the ear plate.

[0009] A method for integrally lifting the upper frame assembly of the power running gear of an electric-driven hybrid vehicle based on the above-mentioned lifting tool comprises the following steps: Step 1: Remove the cable harness, drive motor cooling water pipe and brake pipe connected to the drive motor controller from the electric control room assembly on the upper frame assembly; Step 2: Install the lifting tooling. One end of the three load-bearing slings and one end of the two lifting main ropes are hooked on the crane hooks respectively. Two lifting ears are respectively bolted to both sides of the steel structure at the front of the upper frame assembly. Step 3: After the lifting tooling is connected, straighten out and adjust the length and direction of the three load-bearing slings, two main load-bearing lifting ropes and two main lifting ropes, so that the lifting center of gravity is 400mm away from the rear side of the electric control room assembly and the transverse support rod is 300mm away from the top surface of the electric control room assembly; Step 3: Start the crane and hoist the upper frame assembly together with the electric control room assembly to the maintenance site using the hoisting tooling; Step 4: After the lifting is completed, remove the lifting lugs and carry out maintenance work on the power running gear of the electric-driven hybrid vehicle.

[0010] Since the overall lifting tooling and method of the upper frame assembly of the power running gear of the electric-driven hybrid vehicle of the present invention adopts the above-mentioned technical scheme, that is, one end of the three load-bearing slings of the lifting tooling is hooked on the crane hook, and the other end is arranged at the two ends and the middle of the transverse support rod, two lifting ears are arranged on both sides of the steel structure at the front of the upper frame assembly, one end of the two main load-bearing lifting ropes is arranged at the two ends of the transverse support rod, and the other end is connected to the two lifting ears, and one end of the two main lifting ropes is hooked on the crane hook, and the other end is arranged on both sides of the steel structure in the middle of the upper frame assembly. This method removes the cable harness, cooling water pipes and brake pipelines on the upper frame assembly; installs the lifting tool, and straightens and adjusts the length and direction of each lifting rope and hoisting rope, so that the lifting center of gravity is 400mm away from the side and rear of the electric control room assembly, and the transverse support rod is 300mm away from the top surface of the electric control room assembly; starts the crane, and lifts the upper frame assembly together with the electric control room assembly to the maintenance site through the lifting tool; after the lifting is completed, the lifting lug is removed, and the maintenance work of the power running gear of the electric-driven hybrid vehicle is carried out. This lifting tool and method overcomes the defects of the traditional maintenance work of the power running gear of the electric-driven hybrid vehicle, implements the overall lifting of the upper frame assembly, reduces the steps of assembly disassembly, reduces construction risks, improves work efficiency, reduces the site occupied area, and ensures the normal operation of the electric-driven hybrid vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments: Figure 1 It is a schematic diagram of the overall lifting tooling of the upper frame assembly of the power running gear of the electric-driven hybrid railway vehicle of the present invention; Figure 2 This is a schematic diagram of the lifting lug structure in this lifting tooling; Figure 3 This is a schematic diagram of this lifting method. DETAILED DESCRIPTION

[0012] Implementation example Figure 1 , Figure 2 and Figure 3 As shown, the overall lifting tooling of the upper frame assembly of the power running part of the electric-driven hybrid car of the present invention comprises a traveling hook 1, a transverse strut 2, three load-bearing slings 3, two main load-bearing lifting ropes 4, two lifting main ropes 5 and two lifting eyes 6, one end of the three load-bearing slings 3 is hooked on the traveling hook 1, and the other end is arranged on the two ends and the middle part of the transverse strut 2 through a transition load-bearing shackle 31, the two lifting eyes 6 are respectively arranged on both sides of the steel structure of the front part of the upper frame assembly 7, one end of the two main load-bearing lifting ropes 4 is respectively arranged on the two ends of the transverse strut 2 through a transition load-bearing shackle 31, and the other end is connected to the two lifting eyes 6, one end of the two lifting main ropes 5 is hooked on the traveling hook 1, and the other end is arranged on both sides of the steel structure in the middle part of the upper frame assembly 7 through a load-bearing shackle 51.

[0013] Preferably, the transverse support rod 2 is a square steel tube with a cross-section of 200mm×200mm, and the length of the transverse support rod 2 is greater than the width of the electric control room assembly 8 located in the front of the upper frame assembly 7. The transverse support rod is used to spread the two main load-bearing hoisting ropes, and has sufficient rigidity to ensure the safety angle of the two main load-bearing hoisting ropes while ensuring that the two main load-bearing hoisting ropes do not squeeze the electric control room assembly.

[0014] Preferably, the lifting lug 6 comprises a bottom plate 61, an ear plate 62 and a reinforcing rib plate 63, wherein the ear plate 62 is centrally arranged on the bottom plate 61, and the reinforcing rib plate 63 is vertically arranged between the bottom plate 61 and the ear plate 62. The bottom plate, ear plate and reinforcing rib plate of the lifting lug are 40 mm thick and have sufficient rigidity. The lifting lug is installed to the steel structure on both sides of the upper frame assembly by four M38 high-strength bolts. The lifting lug is the main lifting point of the upper frame assembly, which is installed before lifting and removed after lifting.

[0015] like Figure 2 As shown, a method for hoisting the upper frame assembly of the power running gear of an electric-driven hybrid vehicle based on the above-mentioned hoisting tool comprises the following steps: Step 1: Remove the cable harness, drive motor cooling water pipe and brake pipe connected to the drive motor controller by the electric control room assembly 8 on the upper frame assembly 7; Step 2: Install the lifting tooling. One end of the three load-bearing slings 3 and one end of the two lifting main ropes 5 are respectively hooked on the crane hook, and two lifting ears 6 are respectively provided on both sides of the steel structure of the front part of the upper frame assembly 7 by bolts; Step 3: After the lifting tooling is connected, straighten out and adjust the length and direction of the three load-bearing slings 3, the two main load-bearing lifting ropes 4 and the two main lifting ropes 5, so that the lifting center of gravity is 400mm away from the side and rear of the electric control room assembly 8, and the transverse support rod 2 is 300mm away from the top surface of the electric control room assembly; Step 3: Start the crane and hoist the upper frame assembly 7 together with the electric control room assembly 8 to the maintenance site by means of the hoisting tool; Step 4: After the lifting is completed, the lifting lug 6 is removed and the maintenance work of the power running gear of the electric drive hybrid car is carried out.

[0016] This lifting tooling and method is designed according to the vehicle design drawing and structural bearing capacity, and implements the overall disassembly and assembly plan of the large assembly of the electric drive hybrid vehicle. The overall lifting weight of the large assembly is about 28t, and the overall lifting height including the hook is 7 meters, which meets the requirements of the factory building's 50t crane lifting capacity and lifting height.

[0017] After this lifting tooling was developed and put into use, it has been used to maintain the power running gear of more than 10 electric-driven hybrid vehicles. The maintenance results have been tracked and the maintenance problems have been solved, effectively reducing the danger of working conditions and some electrical and lifting operations. The safety risks have been significantly reduced. Four maintenance workers were involved and the operation time was 3 hours, which improved the efficiency of the maintenance operation. At the same time, the maintenance site occupies no more than 40 square meters, reducing the impact on other maintenance processes.

[0018] This hoisting tool and method optimizes the safety risks of the split disassembly process and the lifting and electrical operations during the maintenance process. It improves maintenance efficiency, reduces human resource investment, reduces site occupation, and reduces the negative impact on routine maintenance. It has strong reliability, convenient hoisting operation, and safer and more efficient disassembly and installation operations, which reduces safety hazards in the maintenance process, improves operating efficiency, and ensures the normal operation of the electric-driven hybrid car.

Claims

1. An integral hoisting tool for the upper frame assembly of the power running gear of an electric-driven hybrid vehicle, including a crane hook, characterized in that: It also includes a transverse support rod, three load-bearing slings, two main load-bearing lifting ropes, two lifting main ropes and two lifting ears. One end of the three load-bearing slings is hooked on the crane hook, and the other end is arranged at the two ends and the middle of the transverse support rod through a transition load-bearing shackle. The two lifting ears are respectively arranged on both sides of the steel structure at the front of the upper frame assembly. One end of the two main load-bearing lifting ropes is respectively arranged at the two ends of the transverse support rod through a transition load-bearing shackle, and the other end is connected to the two lifting ears. One end of the two lifting main ropes is hooked on the crane hook, and the other end is arranged on both sides of the steel structure in the middle of the upper frame assembly through a load-bearing shackle.

2. The overall hoisting tool for the upper frame assembly of the power running gear of the electric-driven hybrid vehicle according to claim 1 is characterized in that: The transverse support rod is a square steel pipe with a cross-section of 200mm×200mm, and the length of the transverse support rod is greater than the width of the electric control room assembly located at the front of the upper frame assembly.

3. The overall hoisting tool for the upper frame assembly of the power running gear of the electric-driven hybrid vehicle according to claim 1 or 2, characterized in that: The lifting ear comprises a bottom plate, an ear plate and a reinforcing rib plate, wherein the ear plate is centrally arranged on the bottom plate, and the reinforcing rib plate is vertically arranged between the bottom plate and the ear plate.

4. A method for integrally lifting the upper frame assembly of the power running gear of an electric-driven hybrid vehicle based on the lifting tooling according to any one of claims 1 to 3, characterized in that The steps include: Step 1: Remove the cable harness, drive motor cooling water pipe and brake pipe connected to the drive motor controller from the electric control room assembly on the upper frame assembly; Step 2: Install the lifting tooling. One end of the three load-bearing slings and one end of the two lifting main ropes are hooked on the crane hooks respectively. Two lifting ears are respectively bolted to both sides of the steel structure at the front of the upper frame assembly. Step 3: After the lifting tooling is connected, straighten out and adjust the length and direction of the three load-bearing slings, two main load-bearing lifting ropes and two main lifting ropes, so that the lifting center of gravity is 400mm away from the rear side of the electric control room assembly and the transverse support rod is 300mm away from the top surface of the electric control room assembly; Step 3: Start the crane and hoist the upper frame assembly together with the electric control room assembly to the maintenance site using the hoisting tooling; Step 4: After the lifting is completed, remove the lifting lugs and carry out maintenance work on the power running gear of the electric-driven hybrid vehicle.

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