CN103659702B - Transformer box body bolt in-batch screwing device - Google Patents

Abstract

The invention relates to a batch tightening device for the bolts of a transformer box body. The device includes a bolt fixing mechanism and a nut tightening mechanism, the bolt fixing mechanism includes a pressing plate and a top plate, pins are fixed on the pressing plate, the pressing plate is movably connected with the top plate through the pins, and grooves are arranged on the top plate; the nuts The tightening mechanism includes a handle, the handle is connected to the motor through a tube, and the turning rod of the motor is connected to the nut tightening device. The invention is simple in structure, easy to manufacture, can fast tighten multiple bolts on the transformer box at the same time, and can perform electric tightening on some special parts of the bolts, thereby improving work efficiency and reducing labor intensity.

Description

Batch tightening device for transformer box bolts

technical field

The invention relates to a device for tightening bolts in batches of transformer boxes.

Background technique

When installing the box of the transformer, in order to ensure the safety of the transformer, anti-theft bolts need to be fastened on multiple parts of the box, and the staff need to tighten each bolt with an electric screw tightening device, but the box body For multiple anti-theft bolts on some parts, due to the limitation of position and angle, the electric screw tightening device cannot reach the place to tighten the bolts, and workers can only tighten them manually with a wrench, which not only has a large workload, but also reduces work efficiency .

Contents of the invention

    The purpose of the present invention is to provide a batch tightening device for transformer case bolts. The invention has a simple structure, can quickly fasten multiple bolts on the transformer box at the same time, and can perform electric tightening on some special parts of the bolts, thereby improving work efficiency and reducing labor intensity.

In order to solve the above-mentioned technical problems, the technical scheme adopted in the present invention is as follows:

The device for tightening the bolts of the transformer box in batches, the device includes a bolt fixing mechanism and a nut tightening mechanism, the bolt fixing mechanism includes a pressure plate and a top plate, the pressure plate is fixed with pins, and the pressure plate moves with the top plate through the pins connection, the top plate is provided with a groove; the nut tightening mechanism includes a handle, the handle is connected to the motor through a tube, and the rotating rod of the motor is connected to the nut tightening device.

When working, pass multiple bolts through the grooves of the top plate, the threaded rods pass through the top plate, and the nuts are erected on the top plate, then the pressure plate is connected with the top plate, the bolts are moved along the grooves, and the position is adjusted so that the threaded rods are in contact with the transformer box The gap on the upper hole is matched, and then the pressure plate is moved down, and the bottom surface of the pressure plate is pressed against the nut of the bolt; at this time, the nut is placed in the nut fastening device, and then the nut fastening device is in contact with the threaded rod of the bolt, so that the nut is in contact with the threaded rod of the bolt. The threaded rods of the bolts are in contact, and then hold the handle, start the motor, the motor drives the nut fastening device, and indirectly drives the nut to be threaded with the bolt. According to the above method, the bolt fastening mechanism can be equipped with multiple motors, which can quickly tighten multiple bolts at the same time. tight.

Preferably, the bottom surfaces of both ends of the pressing plate are respectively fixed with pins perpendicular to the pressing plate, and the two ends of the top plate are respectively provided with through holes, and the pins are in clearance fit with the through holes.

Preferably, the handle of the nut tightening mechanism is connected to the motor through a metal hose.

The staff can adjust the position of the motor and the nut fastening device relative to the bolts through the metal hose. The metal hose is easy to bend and has good shape retention, which is convenient for bolts at some special parts on the transformer box. The nut is fastened, and the technical purpose that the present invention wants to realize can be realized.

Preferably, the number of said metal hoses is not less than two, and each metal hose is connected to a motor.

Preferably, the nut fastening device is a hexagonal tube, the lower end of the hexagonal tube is connected to the rotating rod of the motor, and the inner diameter of the hexagonal tube decreases gradually from top to bottom.

Because the bolts used in the transformer box in the prior art are mostly fastened with hexagonal nuts, the upper end of the nut fastening device in the present invention is designed as a hexagonal tube, and the hexagonal nuts can be put into the hexagonal tube, and the hexagonal nuts fall into the hexagonal tube , because the inner diameter of the hexagonal tube is larger at the top and smaller at the bottom, and the larger inner diameter tube fits with the hexagonal nut, so the hexagonal nut will only fall to the bottom of the large inner diameter of the hexagonal tube, and its position is fixed relative to the hexagonal tube. When the motor drives the hexagonal tube to rotate, the hexagonal nut is stationary relative to the hexagonal tube, and is threadedly connected with the bolt, and the threaded rod passes through the hexagonal nut and enters the smaller inner diameter of the hexagonal tube. After the hexagonal nut is tightened, separate the hexagonal tube from the hexagonal nut and the threaded rod.

Compared with the prior art, the present invention has the following advantages: the present invention is simple in structure, easy to manufacture, can fast tighten multiple bolts on the transformer box at the same time, and can perform electric tightening on some special parts of the bolts , Improve work efficiency and reduce labor intensity.

Description of drawings

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

Fig. 2 is a structural schematic diagram of the top plate in the present invention.

Detailed ways

In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

As shown in Figure 1-2, the batch tightening device for the bolts of the transformer box includes a bolt fixing mechanism and a nut tightening mechanism. The bolt fixing mechanism includes a pressure plate 2 and a top plate 1. The pin 3 perpendicular to the pressure plate 2, the two ends of the top plate 1 are respectively provided with through holes 4, the pin 3 and the through hole 4 are in clearance fit, and the top plate 1 is provided with a groove 5; the nut tightening mechanism includes a handle 6, the handle 6 is connected with the motor 8 through the metal hose 7, and the rotating rod of the motor 8 is connected with the lower end of the hexagonal tube, and the inner diameter of the 10 places in the hexagonal tube is greater than the inner diameter of the 9 places. The number of metal hoses 7 is not less than two, and each metal hose 7 is connected to a motor 8 .

When working, pass a plurality of bolts 11 through the groove 5 of the top plate 1, the threaded rods of the bolts 11 pass through the top plate 5, and the nuts of the bolts are erected on the top plate 1, and then the through hole 4 of the top plate 1 and the pin 3 of the pressure plate 2 are separated. Connect, then move the bolt 11 along the slot 5, adjust the position so that the threaded rod fits with the hole gap on the transformer box, then move the pressure plate 2 down, and the bottom surface of the pressure plate 2 presses the nut of the bolt 11 tightly; at this time, put The hexagonal nut is placed in the hexagonal tube, and the hexagonal nut and the hexagonal tube have 10 clearance fits, so the hexagonal nut falls to the bottom of 10 places and the top of 9 places in the hexagonal tube, and its position is fixed relative to the hexagonal tube. Then hold the handle 6, and adjust the position of the motor 8 and the hexagonal tube relative to the bolt 11 by bending the metal hose 7. After the threaded rod of the bolt 11 contacts the hexagonal nut of the hexagonal tube, start the motor 8, and the motor 8 drives the hexagonal tube. Drive the hexagonal nut to be threadedly connected with the bolt 11, and the threaded rod passes through the hexagonal nut and enters 9 places in the hexagonal tube. After the hexagonal nut is tightened, separate the hexagonal tube from the hexagonal nut and the threaded rod. According to the above method, the hex nuts in the multiple hexagonal tubes connected to the multiple motors 8 in the present invention can fasten multiple bolts 11 at the same time.

Claims (3)

1. The batch tightening device for the bolts of the transformer box is characterized in that the device includes a bolt fixing mechanism and a nut tightening mechanism. The bolt fixing mechanism includes a pressure plate and a top plate, and pins are fixed on the pressure plate. The column is movably connected with the top plate, and there is a groove on the top plate; the nut tightening mechanism includes a handle, the handle is connected to the motor through a tube, the rotating rod of the motor is connected to the nut fastening device, and the bottom surfaces of the two ends of the pressure plate are fixed respectively. There are pins perpendicular to the pressure plate, through holes are respectively provided at both ends of the top plate, and the pins and the through holes are in clearance fit; the nut fastening device is a hexagonal tube, the lower end of the hexagonal tube is connected with the rotating rod of the motor, and the inner diameter of the hexagonal tube Up big and down small. 2. The batch tightening device for transformer box bolts according to claim 1, characterized in that: the handle of the nut tightening mechanism is connected to the motor through a metal hose. 3. The batch tightening device for transformer case bolts according to claim 2, characterized in that: the number of said metal hoses is not less than two, and each metal hose is connected to a motor.