CN103730231B - A kind of head cover of transformer lowering or hoisting gear - Google Patents

Abstract

The invention relates to a lifting device for a transformer top cover, comprising a left support frame and a right support frame symmetrically arranged on the left and right sides of a transformer body, and a left lifting bar and a right lifting bar symmetrically arranged on the top of the transformer top cover; The left hydraulic lifting mechanism, the top of the lifting rod of the left hydraulic lifting mechanism is embedded in the groove on the bottom surface of the left lifting bar, and the left lifting bar is connected with the left lifting ring on the top cover of the transformer; the right hydraulic lifting mechanism is set on the right support frame, The top of the lifting rod of the right hydraulic lifting mechanism is embedded in the groove on the bottom surface of the right lifting bar, and the right lifting bar is connected with the right ring on the top cover of the transformer; the right lifting bar is connected with the left lifting bar through a balance support rod. The invention has the advantages of simple structure, convenient use, safety and reliability, etc., without any other mechanical tools, the transformer top cover can be lifted and lowered freely for repair and replacement, which improves maintenance efficiency, saves maintenance time and reduces maintenance costs.

Description

Lifting device for a transformer top cover

technical field

The invention relates to the technical field of power grid maintenance equipment, in particular to a lifting device for a transformer top cover.

Background technique

The transformer is one of the important equipment in the power supply and distribution system of industrial and mining enterprises and civil buildings. Oil-immersed transformers are usually used, that is, the body of the transformer (including windings and iron cores) is installed in an oil tank filled with transformer oil, and the oil tank is made of steel plates. Welded, the oil tank of medium and small transformers is composed of matching box shell and top cover. The transformer body is placed in the box shell to form the transformer body, and the top cover can be opened to repair the body.

In the operation and management of the power grid, replacing the high and low voltage conductive rods of the transformer is an important task for daily maintenance. The high and low voltage conductive rods of the transformer are easily damaged parts in the transformer. They are usually fixed on the top cover of the transformer. Lift the top cover of the transformer. Because the equipment is heavy, it is usually disassembled by a crane and pulled to the maintenance workshop for repair and replacement. This traditional maintenance method will bring the following problems: the transformer is heavy, which makes disassembly and assembly difficult, and the transportation industry is more difficult. If the roads are good, use tools such as cranes, forklifts, or manual hoists to remove and install them, and vehicles have to be used to pull them. Some distribution units are located in remote locations, and vehicles cannot reach the site. Many people have to carry them in and out, which will lead to maintenance progress. Slow, long power outage and high maintenance costs; the traditional method of lifting the top cover of the transformer with a tripod is used to lift the top cover of the transformer. This method is inefficient, and it is easy to shake and damage the transformer during lifting, causing unnecessary troubles .

Contents of the invention

The technical problem to be solved by the present invention is to provide a transformer top cover lifting device with simple structure, convenient use, safety and reliability.

In order to solve the problems of the technologies described above, the technical solution adopted in the present invention is:

A lifting device for a transformer top cover, comprising a left support frame and a right support frame symmetrically arranged on the left and right sides of a transformer body, and a left lifting bar and a right lifting bar symmetrically arranged on the top surface of a transformer top cover (; the left supporting frame is provided with The left hydraulic lifting mechanism, the top of the lifting rod of the left hydraulic lifting mechanism is embedded in the groove on the bottom surface of the left lifting bar, and the left lifting bar is connected with the left lifting ring on the top cover of the transformer; the right hydraulic lifting mechanism is arranged on the right support frame, The top of the lifting rod of the right hydraulic lifting mechanism is embedded in the groove on the bottom surface of the right lifting bar, and the right lifting bar is connected with the right lifting ring on the transformer top cover; the left lifting bar and the right lifting bar are connected through a balance support rod.

A further improvement of the present invention is that: the left support frame is fixedly installed on the transformer base through the left fixing plate and the left fixing bolt, and the right supporting frame is fixedly installed on the transformer base through the right fixing plate and the right fixing bolt.

A further improvement of the present invention is that: both the left hydraulic lifting mechanism and the right hydraulic lifting mechanism are hydraulic jacks.

A further improvement of the present invention is that: it also includes a left square log and a right square log, and the left square log and the right square log are arranged at the left and right ends between the transformer body and the transformer top cover.

A further improvement of the present invention is that: the left end of the upper edge of the transformer body is provided with a left fixed pin for fixing the left square wood, and the upper edge of the transformer body is provided with a right fixed pin for fixing the right square wood at the right end.

Owing to adopting above-mentioned technical scheme, the technological progress that the present invention obtains is:

The lifting device of the transformer top cover in the present invention has the advantages of simple structure, convenient use, safety and reliability, etc. It can realize the free lifting of the transformer top cover without any other mechanical tools for repair and replacement, which improves the maintenance efficiency and saves maintenance time , reducing maintenance costs.

On the left and right sides of the transformer body, a support frame, a hydraulic lifting mechanism, a lifting bar and a balancing support rod are arranged symmetrically. Through the vertical up and down movement of the hydraulic lifting mechanism, the top cover of the transformer can be lifted up smoothly, which can prevent the transformer from being damaged due to uneven force. The transformer body is offset; the support frame can be firmly fixed on the transformer base through the fixing plate and bolts, and the support frame can also be easily installed and disassembled; the hydraulic jack is used as the hydraulic lifting mechanism, which is low in cost, easy to operate, and convenient Adjust the height of the hydraulic lifting mechanism; by setting the square wood, the pressure of the hydraulic lifting mechanism can be reduced to ensure the safety of the operation; the fixed pin can prevent the safety square wood on both sides from being accidentally touched during work, causing it to fall and lose protection.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is a structural top view of the present invention;

Fig. 3 is the structure right view of the present invention;

Fig. 4 is the rear view of structure of the present invention;

Among them, 1. Transformer body; 1-1, Transformer top cover; 1-2, Left lifting ring; 1-3, Right lifting ring; 1-4, Transformer base; 2-1, Left support frame; 2-2, Right support Frame; 3-1, left hydraulic lifting mechanism; 3-2, right hydraulic lifting mechanism; 4-1, left lift bar; 4-2, right lift bar; 5, balance support rod; 6-1, left fixed plate; 6- 2, right fixed plate; 7-1, left fixed bolt; 7-2, right fixed bolt; 8-1, left square wood; 8-2, right square wood; 9-1, left fixed pin; 9-2, Right retaining pin.

Detailed ways

The present invention will be described in further detail below in conjunction with the accompanying drawings.

The structure of the present invention, as shown in Figure 1, includes a left support frame 2-1 and a right support frame 2-2 symmetrically arranged on both sides of the transformer body 1 and a left lifting bar 4-2 symmetrically arranged on the top end surface of the transformer top cover 1-1. 1 and the right lifting bar 4-2, the left hydraulic lifting mechanism 3-1 is set on the left support frame 2-1, and the top of the lifting rod of the left hydraulic lifting mechanism 3-1 is embedded in the groove on the bottom surface of the left lifting bar 4-1, The left lifting bar 4-1 is connected with the left lifting ring 1-2 on the transformer top cover 1-1; the right hydraulic lifting mechanism 3-2 is set on the right support frame 2-2, and the lifting rod top of the right hydraulic lifting mechanism 3-2 is embedded Installed in the groove on the bottom surface of the right lifting bar 4-2, the right lifting bar 4-2 is connected with the right lifting ring 1-3 on the transformer top cover 1-1; the right lifting bar 4-2 and the left lifting bar 4-1 are supported by balance The rods 5 are connected; the left hydraulic lifting mechanism 3-1 and the right hydraulic lifting mechanism 3-2 are jacks.

The left supporting frame 2-1 is fixedly installed on the transformer base 1-4 through the left fixing plate 6-1 and the left fixing bolt 7-1, and the right supporting frame 2-2 passes through the right fixing plate 6-2 and the right fixing bolt 7-2 Fixedly installed on the transformer base 1-4, the left support frame 2-1 and the right support frame 2-2 can be easily disassembled. Left square wood 8-1 and right square wood 8-2 are arranged at the two ends along transformer body 1, and the left fixed pin 9-1 of fixed left square wood 8-1 is set on the left end of transformer body 1, and transformer body The upper edge right end of 1 is provided with the right fixed pin 9-2 of fixed square wood 8-2.

When using the present invention to repair the transformer on site, it is not necessary to disassemble the transformer from the transformer base 1-4. Using the transformer base 1-4 as a support, fix the left and right two support frames on the transformer base 1-4, then fix the left and right lifting bars on the left and right lifting rings on the transformer top cover 1-1 respectively, and then install the balance support bar 5 Connect to the left and right lifting bars, and then put the two hydraulic lifting mechanisms on the support frame. The top of the lifting rod of the hydraulic lifting mechanism is embedded in the groove on the bottom surface of the lifting bar. Open the transformer top cover 1-1 around the bolts, Operate the hydraulic lifting mechanism to lift the transformer top cover 1-1 to an appropriate height, put safety square wood on both sides of the transformer body 1 and fix it with fixing pins, and then replace the high and low voltage conductive rods.

Specifically: After taking safety measures in accordance with the relevant regulations in Chapter 3 of the Electric Industry Safety Work Regulations (Line Part), remove the high and low voltage drain wires of the transformer, release part of the insulating oil from the oil drain valve to a suitable position, and open the top cover of the transformer 1- 1 around the bolts to separate the transformer top cover 1-1 from the transformer body 1; fix the two horizontal lifting bars, namely the left lifting bar 4-1 and the right lifting bar 4-2, on the left side of the transformer with two Φ20*50 bolts respectively Attach the lifting ring 1-2 and the right lifting ring 1-3, and use Φ12*30 bolts to connect the left lifting bar 4-1 and the right lifting bar 4-2 through the balance support rod 5. The balance support rod 5 is provided with holes for easy adjustment of the fixed position ; Fix the left support frame 2-1 on the left side of the transformer base 1-4 with the left fixed plate 6-1 and the left fixed bolt 7-1, and fix the right support frame 2-2 with the right fixed plate 6-2 and the right The bolt 7-2 is fixed on the right side of the transformer base 1-4, the bolt is Φ16*150, and the support frame is welded by 50*50*5 angle iron; place two hydraulic jacks on the appropriate parts of the two support frames , the lifting rod is embedded in the groove on the bottom surface of the lifting rod, and the jack is operated to slowly raise the transformer top cover 1-1 by about 150-200mm. Smooth lift. Place a safety square on both ends of the upper edge of the transformer body 1, and use the transformer top cover 1-1 and the upper bolt holes of the transformer body 1 to put four fixing pins from top to bottom to prevent accidental contact between the two ends during work. The side safety square makes it fall out of protection, and the transformer can be repaired.

Claims (5)

1. A lifting device for the top cover of a transformer, characterized in that it includes a left support frame (2-1) and a right support frame (2-2) symmetrically arranged on the left and right sides of the transformer body (1) and a symmetrically arranged on the top of the transformer The left lifting bar (4-1) and the right lifting bar (4-2) on the top surface of the cover (1-1); the left hydraulic lifting mechanism (3-1) is set on the left support frame (2-1), and the left hydraulic lifting mechanism (3-1) The top of the lifting rod of the lifting mechanism (3-1) is embedded in the groove on the bottom surface of the left lifting rod (4-1), and the left lifting rod (4-1) and the left lifting ring (1-1) on the transformer top cover (1-1) -2) are connected; the right support frame (2-2) is provided with a right hydraulic lifting mechanism (3-2), and the top of the lifting rod of the right hydraulic lifting mechanism (3-2) is embedded in the right lifting rod (4-2 ) in the groove on the lower bottom surface, the right lifting bar (4-2) is connected with the right lifting ring (1-3) on the transformer top cover (1-1); the left lifting bar (4-1) is connected with the right lifting bar (4 -2) Connected by a balance support rod (5). 2. The transformer top cover lifting device according to claim 1, characterized in that: the left support frame (2-1) is fixed and installed on the left fixing plate (6-1) and the left fixing bolt (7-1) On the transformer base (1-4), the right support frame (2-2) is fixedly installed on the transformer base (1-4) through the right fixing plate (6-2) and the right fixing bolt (7-2). 3. The transformer top cover lifting device according to claim 1, characterized in that: the left hydraulic lifting mechanism (3-1) and the right hydraulic lifting mechanism (3-2) are both hydraulic jacks. 4. The transformer top cover lifting device according to claim 1, characterized in that it also includes a left square wood (8-1) and a right square wood (8-2), the left square wood (8-1) and the right square wood (8-2) The right square wood (8-2) is arranged at the left and right ends between the transformer body (1) and the transformer top cover (1-1). 5. The transformer top cover lifting device according to claim 4, characterized in that: the left end of the upper edge of the transformer body (1) is provided with a left fixing pin (9-1) for fixing the left square wood (8-1), The upper right end of the transformer body (1) is provided with a right fixed pin (9-2) for fixing the right fixed square wood (8-2).