JP2022173021A - Transformer horizontal carrying-in/out assisting lifter - Google Patents

Abstract

To provide a transformer horizontal carrying-in/out assisting lifter for directly hoisting a transformer inside a cubicle building by a crane vehicle and carrying it in/out.SOLUTION: In a transformer horizontal carrying-in/out assisting lifter, which is a lifter body mainly composed of an U-shaped steel member, an arm piece orthogonally extending from an upper end of a vertical shaft forms a hanging arm hung on a crane vehicle, and an arm piece extending in parallel with the hanging arm from a lower end forms an engagement arm engaged with a transformer. A spring balancer is provided on the upper end of the vertical shaft joined with the hanging arm. A crane hanging wire extending from a tip of the hanging arm and hung on a crane hook is provided. The transformer is engaged with the engagement arm which is inserted from the side of a cubicle building door. The transformer is directly hoisted by the crane vehicle and horizontally moved while keeping the U-shaped steel member horizontally with the spring balancer through the hanging arm so as to carrying in/out the transformer.SELECTED DRAWING: Figure 1

Description

The present invention is a power receiving and transforming facility (hereinafter referred to as cubicle) installed in factories, banks, stores, etc., which is directly connected to a transformer (hereinafter referred to as transformer) installed inside the building by a crane vehicle without contacting the roof of the cubicle building. The present invention relates to equipment for hoisting a transformer used for hoisting and replacing the transformer.

Conventionally, a heavy transformer of nearly 1 ton, which is stored in a cramped space inside a cubicle building, is pulled out of the building using a lot of manpower and time, and brought to a state where it can be lifted by a crane truck. was the method.

In the conventional method, when replacing a transformer in the cubicle building, if you try to lift the transformer directly with a crane as shown in Fig. 4, the lifting wire of the crane comes into contact with the roof of the cubicle building. Therefore, it was not possible to directly hang the transformer inside the building. Therefore, it was necessary to manually pull the transformer from the inside of the building to the outside in advance. At that time, in order to eliminate the difference in level between the inner floor and the outer floor of the cubicle building, a temporary frame was installed using iron plates and square lumber, etc., the transformer was lifted using chain blocks, etc., and pipes were installed under the empty space. They are lined up and pulled out to the outside, but if there is even a slight difference in level between the floor of the cubicle and the floor of the temporary stand, there is a danger that the transformer will topple over, so it is very dangerous to move it carefully. , took a considerable amount of time. I somehow managed to put the transformer on the temporary frame by hand, and for the first time, I was able to create a state where the transformer could be lifted up with a crane. The work of manually moving this heavy object forces the worker to work in a crouched posture, which inevitably places a heavy physical and mental burden on the worker. The unloading process, which has finally been completed, shifts to the new transformer loading process, and the same work is repeated in reverse. During this time, power will be lost throughout the building, so quick and accurate work is required. As a result, the stress on the workers is added to the heavy labor, and the labor, time, labor and cost of arranging workers specializing in heavy objects in this process are a considerable burden.
A method and means for moving the transformer horizontally with a crane vehicle directly from the door side of a cubicle building with a closed ceiling and little free space above and below must be found.

It is used to move heavy objects such as transformers by suspending it on a crane vehicle.It is a special lifter mainly composed of a U-shaped steel frame, and it is attached to a crane vehicle and suspended. It is explained below.
In the U-shape, an arm piece extending perpendicularly from the upper end of a vertical axis of about 1700 mm in length constitutes a hanging arm that is hung on a crane vehicle, and an arm piece that extends parallel to the hanging arm from the lower end is a transformer. The hanging arm is provided with a spring balancer extending toward the crane hook at the root, that is, the upper end surface of the vertical axis, and the top surface of the tip extends toward the crane hook. The suspension wire is fixed, and the attachment arm is provided with an attachment base that is firmly attached to the transformer in the tip area, and both the suspension arm and the attachment arm are supported by a reinforcing plate in the root area with respect to the vertical axis. If the rigid joint is such that the hanging arm is approximately 850 mm long, the anchoring arm is somewhat longer, corresponding to the depth of the cubicle building in which the transformer is housed.
When the lifter body configured in this way is hung on a crane vehicle and the transformer installed in the cubicle building is carried out, the engagement arm is inserted into the interior from the opened door of the cubicle building and the engagement base is installed. At that time, the hanging arm was just above the outside of the roof of the cubicle building and was hung on the crane hook through the crane hanging wire and balancer wire. By directly using the power of the crane truck, the cubicle building is lifted using a small vertical space in the cubicle building, and the spring balancer holds the U-shaped character in a horizontal state and carries it out of the cubicle building without difficulty. In this way, a new transformer can be easily carried in directly by a crane truck in the reverse process of the carry-out work to the site where the old transformer has been installed.
In the past, carrying in and out work for transformer replacement had to be done manually, under severe stress and under time pressure, requiring a great deal of labor, danger, and the trouble and cost of arranging heavy-duty craftsmen. However, from the beginning to the end, it is possible to proceed and complete using a crane truck.
It is a transformer horizontal loading/unloading assistance lifter characterized by the above.

Transformer replacement work is often carried out after a power outage on holidays when factories, banks, stores, etc. are not in operation, or during late night or early morning outside business hours. Therefore, it is necessary to quickly complete the transformer replacement work before the start of operation. The following effects can be achieved if the work of carrying in and out of transformer replacement inside the cubicle building can be directly lifted by a crane truck.
(b) It is possible to omit the installation of temporary frames required for loading and unloading, as well as manual loading and unloading work in narrow spaces. stress is reduced. Carrying in and out can be carried out much more safely, easily and quickly than the conventional method.
(b) Considering the time of power outages, the mentally severe stress caused by work under time pressure is reduced by a significant reduction in working hours.
(c) It is also possible to reduce costs related to personnel by reducing the number of workers specializing in heavy items required for preliminary setup work related to carrying in and out.
(2) In the entire process, the work time can be significantly shortened compared to the conventional process, and the work can be completed safely, so the trust of the ordering party can be obtained, and the increased trust will lead to future orders. .

The external appearance side view of this invention in the state suspended by the crane vehicle. An image diagram showing a state in which a transformer is lifted by a crane using the present invention. A perspective view showing a U-shaped steel frame body which is a main part of the present invention. An image diagram showing what kind of situation would occur if a crane truck is directly used to carry in and out without using the present invention, and that it is impossible to carry in and out with a direct crane truck because it is obstructed by the roof of the cubicle building. An image diagram showing in an easy-to-understand manner the use state of the present invention shown in FIG. 2 in relation to the cubicle building.

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below.
In the U-shaped steel frame body, an arm piece extending orthogonally from the upper end of a vertical base shaft (1) with a length of about 1700 mm and a width of 50 mm forms a hanging arm (2) that is hung on a crane vehicle, and is hung from the lower end. An arm piece extending parallel to the hanging arm (2) constitutes an engaging arm (3) to be engaged with the transformer. A spring balancer (5) that extends a balancer wire (6) toward a crane hook (A) is provided, and a crane hanging wire (7) that extends toward the crane hook (A) is fixed to the top surface of the top end thereof. The attachment arm (3) has an attachment base (4) with a length of about 500 mm and a width of 300 mm, which is firmly attached to the transformer (B) in its tip region. (3) are both rigidly joined to the vertical pivot (1) by means of a reinforcing plate (8) in the root area, and when the hanging arm (2) is approximately 850mm long and 50mm wide, the anchoring arm (3) is It is somewhat longer than that, and has a length corresponding to the depth width inside the cubicle building (C) in which the transformer (B) is housed.
The present invention is configured as described above.
A transformer with a weight of about 300 kg to 1 t is installed in a cubicle (generally 2400 mm high, 1800 mm wide, and 1800 deep) installed mainly in factories, banks, stores, and the like. It starts with the work of transporting this old transformer to the outside. As shown in Fig. 4, when the transformer (B) inside the cubicle building (C) is lifted by the crane hook (A) outside, the crane wire (D) contacts the roof of the cubicle building (C). put away. In order to carry out to the outside of the cubicle building (C) by the conventional method, the step between the inside and outside of the cubicle building (C) is eliminated by installing a temporary frame (E) using iron plates or square timbers, etc., and the transformer (B ), the work must be done in a crouched position. Lift the transformer (B) using a chain block, line up the pipes in the empty space below, and pull it to the outside. put out. At this time, if there is a step between the inside of the cubicle building (C) and the floor of the temporary stand (E), there is a danger that the transformer will topple over. rice field.
The use of the present invention is described below.
When carrying out the work of carrying out the transformer (B) installed in the cubicle building according to the present invention, as shown in FIG. A). While keeping horizontal in the state shown in FIG. 1, as shown in FIG.
Through the open door of the cubicle building (C), the engaging arm (3) is inserted into the room and engages the head of the transformer (B) through the engaging base (4). At this time, the hanging arm (2) is directly above the roof of the cubicle building (C), and the vertical pivot (1) can be moved to a position where it does not contact the roof of the cubicle building (C). In this state, the power of the crane truck is used to lift the cubicle building using a small vertical space. is horizontally moved to the outside of the cubicle building (C). At this time, the worker can easily change the direction of the moving lifter body by lightly assisting it with the force of his fingers, so that the lifter body can be carried out safely. When the transported transformer (B) is lifted as it is and placed on the truck, the transporting operation is completed.
Next, the new transformer is carried into the installation site of the old transformer that has been carried out. With the conventional method, if the transformer is scratched or damaged, it would be a serious problem. rice field. Using the lifter body, the transformer (B) can be lifted directly by a crane truck in the reverse process of the carrying-out work so far, and carried in safely and without taking much time. A new transformer is installed, the head of the transformer is disengaged from the engagement base (4), the lifter body is moved horizontally to the outside of the cubicle building (C), and the carry-in work is completed.
In this way, the transformer replacement work can be completed safely, easily, quickly, and at a low cost by being able to make it in time for the start of work in the facility, which was in a power outage during the work. became.

1 vertical pivot 2 suspension arm 3 engagement arm 4 engagement base 5 spring balancer 6 balancer wire 7 crane suspension wire 8 reinforcing plate A crane hook B transformer C cubicle building D crane wire E temporary pedestal

Claims (3)

It is a substantially U-shaped lifter body made mainly of a strong material, and an arm piece extending perpendicularly from the upper end of the vertical axis forms a hanging arm that is hung on a crane vehicle, and the hanging arm from the lower end. The arm piece extending in parallel to forms an engagement arm that is engaged with the transformer,
In the hanging arm,
A spring balancer that extends a balancer wire toward the hook of the crane vehicle is provided on the root, that is, the upper end surface of the vertical axis, and a crane suspension wire that extends toward the crane hook is fixed to the top surface of the tip,
The suspension arm is slightly longer than the attachment arm, and conforms to the depth of the interior of the cubicle building where the transformer is housed.
Transformer horizontal loading/unloading assistance lifter characterized by the above. 2. A lifter for assisting horizontal loading and unloading of a transformer according to claim 1, wherein the engaging arm is provided with an engaging base that is firmly engaged with the transformer in the tip region thereof. 2. A transformer horizontal loading/unloading assistance lifter according to claim 1, wherein both the hanging arm and the engaging arm are rigidly joined to the vertical base shaft by a reinforcing plate at their root regions.

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