CN215439239U

CN215439239U - Device for transferring and hoisting heavy equipment

Info

Publication number: CN215439239U
Application number: CN202120450629.1U
Authority: CN
Inventors: 郑钢
Original assignee: CNNC Nuclear Power Operation Management Co Ltd; Third Qinshan Nuclear Power Co Ltd
Current assignee: CNNC Nuclear Power Operation Management Co Ltd; Third Qinshan Nuclear Power Co Ltd
Priority date: 2021-03-02
Filing date: 2021-03-02
Publication date: 2022-01-07
Anticipated expiration: 2031-03-02

Abstract

The utility model belongs to the field of machinery, and particularly relates to a device for transferring and hoisting heavy equipment. The existing transportation and hoisting modes lead to long maintenance and transportation time and high irradiation risk of collective and individual dose. The overall overhaul time of the overhaul end face is influenced, and therefore the overall plan of the unit grid-connected power generation is influenced. The device comprises a frame, an operating handle, a hoisting device and a driving device; the driving device comprises a motor, a speed reducer and a chain; the operating handle bar is connected with the axle, and the upper part of the frame is a step-shaped platform which has the same shape with the lower part of the driving unit. The device realizes stable transportation and hoisting equipment, thereby greatly reducing the maintenance manpower, shortening the maintenance and transportation time, reducing the collective and individual dosage of personnel, and ensuring the purpose of grid-connected power generation of the unit according to the normal planning time.

Description

Device for transferring and hoisting heavy equipment

Technical Field

The utility model belongs to the field of machinery, and particularly relates to a device for transferring and hoisting heavy equipment.

Background

One of the biggest characteristics of the heavy water reactor nuclear power unit of the Qinshan third nuclear power plant is that the nuclear power unit can be reloaded only by opening a shielding door of a loading and unloading machine of 181 tons every time the nuclear power unit is reloaded for four days every week without stopping the nuclear power unit for reloading. The loader shield door provides a radiation and ventilation barrier between the loader service area and the reactor. Under the condition that the reactor is full power, personnel can safely maintain the loading and unloading machine and auxiliary equipment.

The 181 ton handler screen door is carried and driven by two 7.5 ton drive units. Drive unit equipment servicing can only be performed during major repairs. Drive unit equipment is in the high radiation district, and the place overhauls the space little, and the monomer equipment weight is heavy, and the bottom is irregular, and the equipment focus is not on the center, and personnel can't normally transport this equipment, use the bearing gyro wheel to transport drive unit, and equipment easily inclines, and no drive power leans on pushing such as ten many people's manpower and chain block. According to the radiation optimization principle, the equipment is transported to a low radiation area as soon as possible for maintenance, but the equipment body has fixed pollution and other reasons, and needs to be transported from a reactor plant and hoisted into an auxiliary plant for maintenance, and hoisting is carried out twice. The existing transportation and hoisting modes lead to long maintenance and transportation time and high irradiation risk of collective and individual dose. The overall overhaul time of the overhaul end face is influenced, and therefore the overall plan of the unit grid-connected power generation is influenced. Need to design a device of transporting and hoist, steady, safety, quick transportation and hoist drive unit. Therefore, the maintenance manpower can be greatly reduced, the maintenance transfer time is shortened, and the collective and individual dosage of personnel is reduced. And ensuring that the unit is connected to the grid for power generation according to normal planned time.

Disclosure of Invention

1. The purpose is as follows:

transport and hoist drive unit, use bearing roller to transport drive unit now, equipment easily inclines, and no drive power leans on ten many people manpower and pushing such as chain block. In the hoisting process, a temporary storage rack is needed to transport the equipment back and forth. The drive unit equipment is in the high radiation district, and the place overhauls the space little, and the monomer equipment weight is heavy, and the bottom is irregular, and the equipment focus is not on the center, and the unit of driving of having bad luck needs 3 days, and collective and personal dose are high, and the hoist and mount risk is big, and equipment and personnel industrial safety risk are big, influence the overall plan of unit grid-connected electricity generation.

The utility model aims to develop and develop a device for transferring and hoisting heavy equipment, which is used for transferring the driving unit of a shielding door of a heavy water reactor nuclear power plant to a repair workshop of an auxiliary factory building from the position of the end face of a reactor after the driving unit of the shielding door is detached from a shielding door body when the driving unit of the shielding door of the heavy water reactor nuclear power plant is repaired. Drive unit equipment is in high radiation area, and the place overhauls the space little, and the monomer equipment weight is heavy, and the bottom is irregular, and the equipment focus is not on the center, need design one kind can steadily bear the weight of drive unit and remove, and conveniently turn to and the device of hoist and mount. The device is similar to a trolley, a steering mechanism is needed, a bearing platform is arranged, the lifting safety is ensured, the trolley is provided with two different lifting positions (two different lifting modes, in order to avoid damaging the epoxy resin ground, a bearing rubber wheel is adopted, the rubber wheel cannot be removed after being contacted with the rubber wheel in order to avoid loose pollution on the ground, the mode of detachably replacing the rubber wheel is adopted, the device is stable when bearing a driving unit in order to ensure that the device is stable, low-speed motor transmission is adopted, in the moving process of the driving unit is prevented from bearing, overturning occurs, the device is provided with an anti-inclination auxiliary wheel, and through the device, stable transportation and lifting equipment are achieved, so that the manpower for overhauling is greatly reduced, the overhauling and transferring time is shortened, the collective and individual dosage of personnel is reduced, and the purpose of grid-connected power generation of the unit according to normal planning time is ensured.

2. The technical scheme is as follows:

a device for transferring and hoisting heavy equipment comprises a frame, an operating handle, a hoisting device and a driving device; the driving device comprises a motor, a speed reducer and a chain; the operating handle bar is connected with the axle, and the upper part of the frame is a step-shaped platform which has the same shape with the lower part of the driving unit.

The reducer is fixed on the frame through bolts, and an output shaft of the reducer is connected with a chain wheel B and a chain wheel A through a chain; the chain wheel B is arranged on the wheel shaft.

The motor is fixedly connected with the speed reducer through a bolt; the motor is arranged at the bottom of the trolley.

The bottom of the frame is provided with four bearing rubber wheels, two driving wheels and two rotating wheels; the axle is connected with the bearing rubber wheel, and the bearing rubber wheel can change direction.

The bearing rubber wheel consists of a wheel shaft, an oil seal and a transparent cover; the bearing rubber wheel is oiled to the bearing B through an oil filling nozzle on the axle.

The operating handle rod is connected with the connecting rod through the moving part, and the connecting rod is connected with the rubber wheel support.

The hoisting device is divided into two parts, namely an upper part hoisting and a lower part hoisting; the device comprises an upper hoisting position A, an upper hoisting position B and an upper hoisting position C, wherein the upper hoisting position D is a part of a frame, and the end part of the upper hoisting position D is provided with an anti-falling baffle; the lower hoisting position A, the lower hoisting position B, the lower hoisting position C and the lower hoisting position D are all part of the frame.

The outer side of the bottom of the frame is provided with an anti-tilting auxiliary wheel.

3. The effect is as follows:

the heavy equipment transferring and hoisting device for the heavy water reactor nuclear power station is safe, reliable, convenient to use and high in stability, greatly reduces overhauling manpower, shortens overhauling and transferring time, reduces collective and individual dosage of personnel, meets the whole service life of a power station, and creates the same advanced level of the power station at home and abroad.

Drawings

FIG. 1 front view of a device for transporting and hoisting heavy equipment

FIG. 2 left side view of a device for transporting and hoisting heavy equipment

FIG. 3 motor cross-sectional view of a device for transporting and hoisting heavy equipment

FIG. 4 front wheel cross-sectional view of a device for transporting and hoisting heavy equipment

FIG. 5 rear wheel cross-sectional view of a device for transporting and hoisting heavy equipment

FIG. 6 sectional view of operation handle bar of transferring and hoisting heavy equipment device

In the figure: 1. the device comprises a frame, 2, bearings A, 3, a wheel carrier, 4, bearings B, 5, spacers, 6, a bearing rubber wheel, 7, an axle, 8, an oil seal, 9, bearings C, 10, an anti-tilt auxiliary wheel, 11, an oil filler nozzle, 12, an axle, 13, chain wheels B, 14, a bearing seat, 15, chain wheels A, 16, an operating handle, 17, a connecting rod, 18, a chain, 19, a speed reducer, 20, a motor, 2101, an upper hoisting position A,2102, an upper hoisting position B, 2103, an upper hoisting position C, 2104, an upper hoisting position D, 2201, a lower hoisting position A, 2202, a lower hoisting position B, 2203, a lower hoisting position C, 2204 and a lower hoisting position D.

Detailed Description

The device is further described with reference to the accompanying drawings and embodiments:

the heavy equipment transferring and hoisting device for the heavy water reactor nuclear power station is safe, reliable, convenient to use and high in stability, greatly reduces overhauling manpower, shortens overhauling and transferring time, and reduces collective and individual dosage of personnel.

As shown in fig. 4, the apparatus is a driving cart having a stepped platform, and the apparatus frame 1 is a platform having steps at the upper part, which is fitted to the lower part of the driving unit, for storing the driving unit. The device is driven by a power supply, and a switch for moving forward, backward and stopping is arranged on an operating handle 16. The bottom of the trolley is provided with a slow motor 20, and the bottom is provided with four bearing rubber wheels 6, two driving wheels and two rotating wheels. The device is provided with an operating handle 16 which is convenient for steering in the moving process and is provided with a front device, a rear device and a stop device. The problem that manpower and chain block are needed for pushing is solved. After the motor 20 is powered on, the device bears the driving unit, the driving unit is driven stably at a low speed, and when the device encounters a place with uneven height, the anti-inclination auxiliary wheel plays an auxiliary support to ensure that the device bearing the driving unit moves stably.

As shown in fig. 2, 3, and 5, the motor 20 is connected to the reducer 19 by bolts, washers, and nuts. The speed reducer 19 is fixed to the frame 1 by bolts, washers, and nuts. The reducer 19 is connected with a chain wheel B13 and a chain wheel A15 through a chain 18. The chain wheel B13 is installed on the wheel shaft 12, thereby driving the bearing rubber wheel piece 6 to move, the bearing rubber wheel piece 6 is driven to move, and the device moves. The operating handle lever 16 is connected with the rubber wheel support, and the axle 7 is connected with the bearing rubber wheel piece 6, so that the change of all directions is realized. Four anti-tilting auxiliary wheels 10 are arranged at the lower part of the device, and in the action process, when the deviation occurs, the anti-tilting auxiliary wheels 10 roll after contacting the ground, thereby playing the roles of anti-tilting and auxiliary support.

As shown in fig. 6, the device can change the direction by operating the operating lever 16. The operating lever 16 is connected by a pin and a copper sleeve. The washer, the pin shaft, the copper sleeve and the connecting rod 17 are connected to realize a movable joint. The axle 7 is connected through a pin shaft, a cotter pin, a connecting rod 17 and a copper sleeve, so that the operating handle lever 16 can change in all directions.

As shown in figure 1, the device has two hoisting positions, an upper hoisting position and a lower hoisting position. The drive unit can be hoisted together with the device. An upper hoisting position A2101, an upper hoisting position B2102, an upper hoisting position C2103 and an upper hoisting position D2104 are part of the frame 1, are made of a whole material, and are provided with anti-falling baffles at the end parts. The lower hoisting position a2201, the lower hoisting position B2202, the lower hoisting position C2203 and the lower hoisting position D2204 are all part of the frame 1. The safety of the driving unit is ensured when the driving unit is hoisted.

The rubber wheel 6 is carried by the device to prevent damage to the epoxy resin floor. The bearing rubber wheel 6 consists of a wheel shaft 12, an oil seal 8 and a transparent cover and consists of a bolt and a gasket. The bearing rubber wheel 6 is oiled through the oil nozzle 11 on the axle 7 and reaches the bearing B4 through the oil hole to realize lubrication.

The device bears under the condition that the rubber wheel spare 6 appears the radiation pollution and can't clear away, can realize dismantling the change. The cotter pin and the pin shaft are firstly removed from the rubber wheel carrying member 6, and the operating lever 16 is separated from the rubber wheel support. After the gasket, the bolt and the pressing plate are disassembled, the axle 7 can be disassembled, and the rubber-loaded wheel piece 6 can be disassembled and replaced. The rubber-loaded wheel piece 6 is detached from the wheel shaft 12 by detaching the bolt and the pressing plate, so that the rubber-loaded wheel piece 6 is detached and replaced.

The specific operation method comprises the following steps:

(1) as shown in fig. 1, the heavy equipment is transported and hoisted to a corresponding room in the reactor plant, the driving unit has been completely removed from the shield door body, the driving unit is hoisted to the device, and the bottom of the driving unit is matched with the step of the device.

(2) The device is powered on and the device is activated to move using the "front" and "rear" buttons on the operating lever 16. The motor 20 is electrified, the output end of the speed reducer 19 is connected with the chain wheel 15A, the chain wheel 15A is connected with the chain wheel 13B through the chain 18, and the chain wheel 13B is connected with the rubber bearing wheel 6 through the wheel shaft 12. The front and rear movements are performed.

(3) When the steering is needed, the operating hand lever 16 is connected with the rubber bearing wheel 6 through the connecting rod 17, so that the left-right direction rotation is realized.

(4) When encountering uneven ground, the anti-tilt auxiliary wheel 10 passively rotates and supports. Preventing the equipment from overturning.

(5) When a stop is required or an emergency situation is encountered, the motor 20 is de-energized and the device stops moving using the operating "stop" button on the operating lever 16.

(6) After the device is moved to the position to be hoisted with the drive unit, the motor 20 is not energized and the device stops moving using the operation "stop" button on the operating lever 16. The operating handle bar 16 is fixed by a chain, so that the operating handle bar 16 is prevented from shaking in the hoisting process.

(7) An upper hoisting position A2101, an upper hoisting position B2102, an upper hoisting position C2103 and an upper hoisting position D2104. A lower hoisting position A2201, a lower hoisting position B2202, a lower hoisting position C2203 and a lower hoisting position D2204. The drive unit is hoisted together with the device.

(8) And finally reaching an auxiliary workshop maintenance workshop through multiple times of transferring and hoisting.

And transferring and hoisting the reactor plant from the auxiliary plant to a corresponding room of the reactor plant according to the steps.

When the lifting is needed, the power supply is cut off, and the steering handle is tied up by an iron chain. And (3) mounting a hanging strip at the upper hoisting position or mounting and hoisting at the lower hoisting position, or mounting a hanging strip at the upper and lower hoisting positions for hoisting. The problem of the drive unit need hoist alone the back, need transport many times is solved. The surfaces of the four bearing rubber wheels are provided with soft materials, so that the epoxy resin ground in a factory building can not be damaged under the condition of loading. Even if the epoxy resin ground is polluted, the bearing rubber wheel is polluted and cannot be cleaned, and the bearing rubber wheel can be replaced by detaching the bearing rubber wheel. Ensuring that the device continues to be used. The ground is protected, and the cost is saved.

Claims

1. The utility model provides a device for transporting and hoist and mount heavy equipment which characterized in that: comprises a frame (1), an operating handle bar (16), a hoisting device and a driving device; the driving device comprises a motor (20), a speed reducer (19) and a chain (18); the operating handle bar (16) is connected with the rubber wheel support, and the upper part of the frame (1) is a step-shaped platform which has the same shape with the lower part of the driving unit.

2. The apparatus for transferring and hoisting heavy equipment according to claim 1, wherein: the speed reducer (19) is fixed on the frame (1) through bolts, and an output shaft of the speed reducer (19) is connected with a chain wheel B (13) and a chain wheel A (15) through a chain (18); the chain wheel B (13) is arranged on the wheel shaft (12).

3. The apparatus for transferring and hoisting heavy equipment according to claim 1, wherein: the motor (20) is fixedly connected with the speed reducer (19) through a bolt; the motor (20) is arranged at the bottom of the trolley.

4. The apparatus for transferring and hoisting heavy equipment according to claim 1, wherein: the bottom of the frame (1) is provided with four bearing rubber wheels (6), two driving wheels and two rotating wheels; the axle (7) is connected with the bearing rubber wheel (6), and the bearing rubber wheel (6) can change direction.

5. The apparatus for transferring and hoisting heavy equipment according to claim 4, wherein: the bearing rubber wheel (6) consists of a wheel shaft (12), an oil seal (8) and a transparent cover; the bearing rubber wheel (6) is oiled to the bearing B (4) through an oil nozzle (11) on the axle (7).

6. The apparatus for transferring and hoisting heavy equipment according to claim 1, wherein: the operating handle lever (16) is connected with the connecting rod (17) through the movable piece, and the connecting rod (17) is connected with the rubber wheel support.

7. The apparatus for transferring and hoisting heavy equipment according to claim 1, wherein: the hoisting device is divided into two parts, namely an upper part hoisting and a lower part hoisting; the device comprises an upper hoisting position A (2101), an upper hoisting position B (2102), an upper hoisting position C (2103), an upper hoisting position D (2104) which is a part of a frame (1), and an anti-drop baffle plate at the end; lower hoist position A (2201), lower hoist position B (2202), lower hoist position C (2203), lower hoist position D (2204) are all a part of frame (1).

8. The apparatus for transferring and hoisting heavy equipment according to claim 1, wherein: the outer side of the bottom of the frame (1) is provided with an anti-tilt auxiliary wheel (10).