Device for storing top hoist of reactor and simulating disassembly and assembly of walking motor

Abstract

The utility model discloses a device for storing a reactor top hoist and simulating disassembly and assembly of a walking motor, relates to the field of nuclear reactor disassembly and assembly tools, and is used for solving the problems that an existing reactor top hoist is large in storage occupied space and high in disassembly operation difficulty. The device comprises a pair of transverse supporting frames arranged on a bottom supporting plate; the upper flange of the bearing I-shaped beam is connected with the cross beam part of the transverse support frame and is perpendicular to the cross beam part; one-way backstops are symmetrically arranged on the lower surface of an upper flange of the load-bearing I-shaped beam, and anti-collision blocks are arranged on a lower flange of the load-bearing I-shaped beam at intervals, so that the top stacking hoist can be mounted between the two anti-collision blocks; the walking motors are arranged on walking motor supporting frames installed on the bottom supporting plate in pairs. Walking wheels are designed on the lower surface of the bottom supporting plate. Through the structure of the device, the occupied space when the reactor top hoist and the motor are stored and the operation difficulty of disassembling the reactor top hoist can be reduced.

Description

Technical Field

[0001] This utility model belongs to the technical field of nuclear reactor disassembly and assembly tools, specifically relating to a device for simulating the disassembly and assembly of a reactor top hoist storage and walking motor. Background Technology

[0002] During each refueling overhaul of the AP1000 unit, the assembly and disassembly of the integrated stack top hoist assembly is required. Each stack top hoist assembly involves the assembly and disassembly of two circumferential travel motors and one lifting mechanism. Currently, the assembly and disassembly of the AP1000 unit's stack top hoist has the following characteristics: 1. The assembly and disassembly of the stack top hoist requires the use of a lifting vehicle for high-altitude operations, posing industrial safety risks such as personnel falling and personnel being below the suspended load; 2. During the assembly and disassembly of the stack top hoist, workers must wear paper and tungsten aprons, resulting in high labor intensity and increasing the probability of errors due to fatigue; 3. The environmental dose rate is high during the assembly and disassembly of the stack top hoist, which can easily cause psychological stress for personnel, further increasing the possibility of human error; 4. The assembly and disassembly of the stack top hoist requires the use of small parts such as snap rings, and operators wearing fine sand gloves and rubber gloves may not have sufficient control over these small parts, easily resulting in foreign objects; 5. During daily storage, the stack top hoist's size and shape prevent it from being placed normally, increasing the plant's usable space and also posing a risk of bending and damage to the hoist's cables. At the same time, the top hoist has no fixed storage location after disassembly and assembly. If it is stored in the factory, sleepers need to be laid under each top hoist and the traveling motor. The large number of top hoists and traveling motors occupy a lot of usable space in the factory, affecting the tidiness and placement of other tools. Utility Model Content

[0003] In view of this, the present invention aims to provide a device for simulating the disassembly and assembly of a reactor top hoist storage and a walking motor. This solves the problems of existing reactor top hoists, such as large storage space requirements, high difficulty in disassembly operations, high risk of foreign objects, and high safety risks.

[0004] The technical solution adopted by this utility model to solve its technical problem is: a device for storing reactor top hoists and simulating the disassembly and assembly of traveling motors. The device includes: a pair of transverse support frames set on the bottom support plate; the upper flange of the load-bearing I-beam is connected to the crossbeam portion of the transverse support frame, and the two are perpendicular to each other; one-way stops are symmetrically arranged on the lower surface of the upper flange of the load-bearing I-beam, and anti-collision blocks are spaced apart on the lower flange of the load-bearing I-beam, so that the reactor top hoist can be installed between the two anti-collision blocks; the traveling motor is set on the traveling motor support frames installed in pairs on the bottom support plate; and traveling wheels are designed on the lower surface of the bottom support plate.

[0005] The aforementioned device for storing reactor top hoists and simulating the disassembly and assembly of walking motors includes a transverse support frame structure comprising two columns and a crossbeam. The crossbeam is installed on the upper end of the parallel columns, and the lower end of the columns is vertically and fixedly connected to the bottom support plate.

[0006] The aforementioned device for storing reactor top hoists and simulating the disassembly and assembly of traveling motors includes a number of lifting lugs on the upper surface of the crossbeam of the transverse support frame for hoisting the device and the reactor top hoist together.

[0007] The above-mentioned device for storing reactor top hoists and simulating the disassembly and assembly of moving motors includes a disassembly and assembly simulator mounted on two columns on the same side of a pair of transverse support frames.

[0008] The aforementioned device for storing and simulating the disassembly and assembly of a reactor top hoist and a traveling motor includes one-way stops located at the four corners of the lower surface of the upper flange of the load-bearing I-beam. These one-way stops prevent the top hoist from accidentally falling during movement.

[0009] The aforementioned device for storing reactor top hoists and simulating the disassembly and assembly of traveling motors includes a traveling motor fixing device designed on the traveling motor support frame.

[0010] The aforementioned device for storing reactor top hoists and simulating the disassembly and assembly of walking motors includes four walking wheels, including a pair of omnidirectional wheels for turning the device and a pair of fixed wheels for supporting the movement of the device.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model provides a device for simulating the disassembly and assembly of a reactor top hoist and a traveling motor. On the one hand, through structural design, it reduces the space occupied by the top hoist and motor during storage. On the other hand, the simple structural design reduces the operational difficulty of disassembling the reactor top hoist, reduces operator time, and lowers the probability of human error. Attached Figure Description

[0012] Figure 1 The diagram shown is an overall structural schematic of a device for storing a reactor top hoist and simulating the disassembly and assembly of a walking motor, as described in this utility model.

[0013] Figure 2 The image shown is a front view of a device for storing a reactor top hoist and simulating the disassembly and assembly of a walking motor, as described in this utility model.

[0014] Figure 3 The image shown is a top view of a device for simulating the disassembly and assembly of a reactor top hoist and a walking motor, as described in this utility model.

[0015] The following are the labels in the attached diagram: 1. Lifting lug; 2. Horizontal support frame; 3. One-way stop; 4. Load-bearing I-beam; 5. Assembly / disassembly simulation body; 6. Top hoist; 7. Travel motor; 8. Travel motor support frame; 9. Bottom support plate; 10. Travel wheel; 11. Anti-collision block. Detailed Implementation

[0016] To address the problems of existing reactor top hoists, such as large storage space requirements, high disassembly difficulty, significant foreign object risk, and high safety risks, this utility model provides a device for simulating the disassembly and assembly of a reactor top hoist storage and travel motor. Figures 1-3 As shown, the device includes: a pair of parallel transverse support frames 2 vertically mounted on a bottom support plate 9. The structure of each transverse support frame 2 mainly consists of two columns and a crossbeam. The crossbeam is installed on the upper end of the parallel columns, and the lower end of the columns is fixedly connected to the bottom support plate 9. Several lifting lugs 1 are provided on the upper surface of the crossbeam of the transverse support frame 2 for hoisting the device and the top hoist 6 as a whole. A disassembly / assembly simulation body 5 is installed on two columns on the same side of the pair of transverse support frames 2. The disassembly / assembly simulation body 5 is fixed to the transverse support frames 2 with bolts and its height is adjustable. This simulation body simulates the installation position of the top hoist motor above the integrated top cover, and can be used to train operators and simulate practical operation during non-major overhaul periods.

[0017] The upper flange of the load-bearing I-beam 4 is connected to the crossbeam portion of the transverse support frame 2, and the two are set perpendicularly. One-way stops 3 are symmetrically arranged on the lower surface of the upper flange of the load-bearing I-beam 4, located at the four corners of the lower surface of the upper flange. These one-way stops facilitate the installation of the top-mounted hoist 6 on the load-bearing I-beam and prevent the top-mounted hoist 6 from accidentally falling during movement. Anti-collision blocks 11 are spaced apart on the lower flange of the load-bearing I-beam 4, allowing the top-mounted hoist 6 to be installed between two anti-collision blocks 11 to prevent them from colliding with each other. The traveling motor 7 is mounted on paired traveling motor support frames 8 on the bottom support plate 9. Each traveling motor support frame 8 is equipped with a fixing device for the traveling motor 7. The lower surface of the bottom support plate 9 is designed with traveling wheels 10, preferably four in number, including a pair of omnidirectional wheels for steering and a pair of fixed wheels for supporting the movement of the device.

[0018] Example 1: Dismantling of reactor top hoist 6 and traveling motor 7

[0019] S1.1: Hoist the entire assembly and disassembly device to the same height as the reactor integrated top cover platform where the top hoist 6 is located;

[0020] S1.2: Remove the top hoist 6 from the integrated reactor top cover, and then use a lifting device to hoist the top hoist 6 to one side of the load-bearing I-beam 4 of the device;

[0021] S1.3: Disconnect the lifting device from the top hoist 6 and push the top hoist 6 along the load-bearing I-beam 4 from one side into the device;

[0022] S1.4: Install anti-collision blocks 11 on both sides of the top hoist 6;

[0023] S1.5: Disassemble the other top hoists 6 according to the above steps and install them into the device;

[0024] S1.6: Hoist the walking motor 7 onto the walking motor support frame 8 on the device and fix it in place; preferably, the fixing is done by using a fixing strap.

[0025] S1.7: Finally, the entire assembly and disassembly device is hoisted onto a flatbed truck and transported out, preferably a 10T flatbed truck.

[0026] Example 2: Installation status of reactor top hoist 6 and traveling motor 7

[0027] S2.1: Hoist the assembly and disassembly device and the top hoist 6 together to the same height as the integrated reactor top cover platform;

[0028] S2.2: Lift the one-way stop 3 on the disassembly and assembly device and rotate it 90° to ensure that it does not interfere with the removal of the top hoist 4 after being lifted.

[0029] S2.3: Release the fixing straps between the travel motor 7 and the travel motor support frame 8;

[0030] S2.4: Use a hoisting tool to lift and install the top hoist 4 and the traveling motor 7 onto the integrated top cover, and install them in sequence;

[0031] S2.5: After installation, remove the disassembly / removal device from the operating platform.

[0032] Example 3: Simulated disassembly and assembly of circumferential travel motor 7

[0033] S1: Adjust the position and height of the disassembly / assembly simulation body 5 to be flush with the walking motor 7 to be disassembled / assembled;

[0034] S2: After releasing the fixation of the walking motor 7 to be disassembled, connect the bolts on it to the corresponding bolts on the disassembly and assembly simulation body 5 and install the upper key of the walking motor 7.

[0035] S3: Install the gear of the walking motor 7 to be disassembled, and match it with the gears on both sides of the disassembly and assembly simulation body 5;

[0036] S4: Install the outer retaining ring of the walking motor 7 and complete the simulated disassembly and assembly.

[0037] It should be noted that the combination of the technical features in the embodiments of this utility model is not limited to the combination methods recorded in the embodiments of this utility model or the combination methods recorded in specific embodiments. All technical features recorded in this utility model can be freely combined or combined in any way, unless there is a contradiction between them.

[0038] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications or equivalent substitutions made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A device for simulating the disassembly and assembly of a reactor top hoist and a traveling motor, characterized in that, The device includes: a pair of transverse support frames (2) set on the bottom support plate (9); the upper flange of the load-bearing I-beam (4) is connected to the crossbeam part of the transverse support frame (2), and the two are perpendicular to each other; one-way stops (3) are symmetrically arranged on the lower surface of the upper flange of the load-bearing I-beam (4), and anti-collision blocks (11) are spaced apart on the lower flange of the load-bearing I-beam (4), so that the top hoist (6) can be installed between the two anti-collision blocks (11); the walking motor (7) is set on the walking motor support frame (8) installed in pairs on the bottom support plate (9); the lower surface of the bottom support plate (9) is designed with walking wheels (10).

2. The device for simulating the disassembly and assembly of a reactor top hoist and a traveling motor, as described in claim 1, is characterized in that... The structure of the transverse support frame (2) mainly includes two columns and a crossbeam. The crossbeam is installed on the upper end of the parallel columns, and the lower end of the columns is vertically fixed to the bottom support plate (9).

3. The device for simulating the disassembly and assembly of a reactor top hoist and a traveling motor, as described in claim 1, is characterized in that... The upper surface of the crossbeam of the transverse support frame (2) is provided with several lifting lugs (1) for the overall hoisting of the device and the top hoist (6).

4. The device for simulating the disassembly and assembly of a reactor top hoist storage and traveling motor according to claim 1, characterized in that, The assembly / disassembly simulation body (5) is installed on two columns on the same side of a pair of transverse support frames (2).

5. A device for simulating the disassembly and assembly of a reactor top hoist and a traveling motor, as described in claim 1, is characterized in that... The one-way stop (3) is set at the four corners of the lower surface of the upper flange of the load-bearing I-beam (4). The one-way stop (3) is used to prevent the top hoist (6) from falling accidentally during the movement.

6. The device for simulating the disassembly and assembly of a reactor top hoist storage and traveling motor according to claim 1, characterized in that, The walking motor support frame (8) is designed with a fixing device for the walking motor (7).

7. The device for simulating the disassembly and assembly of a reactor top hoist and a traveling motor, as described in claim 1, is characterized in that... The number of the traveling wheels (10) is four, including a pair of omnidirectional wheels for turning the device and a pair of fixed wheels for supporting the movement of the device.

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