CN202212505U

CN202212505U - Shearing type small bus cutter

Info

Publication number: CN202212505U
Application number: CN 201120247122
Authority: CN
Inventors: 王洪峰; 孙明浩; 索保锋; 李涛; 闫志勇; 刘福朝; 魏滢峰; 袁宝明; 闫振宇
Original assignee: Zhengzhou Power Supply Co of Henan Electric Power Co
Current assignee: Zhengzhou Power Supply Co of Henan Electric Power Co
Priority date: 2011-07-14
Filing date: 2011-07-14
Publication date: 2012-05-09
Anticipated expiration: 2021-07-14

Abstract

The utility model discloses a shearing type small bus cutter, which comprises a cutter holder and a shearing cutter. The cutter holder is E-shaped and comprises a side plate, a top plate, a middle plate and a bottom plate, the top plate is provided with a threaded hole, a bolt is screwed in the threaded hole, the middle plate is provided with a guide hole, the shearing cutter is sleeved in the guide hole, the bottom plate is provided with a wire arrangement slot and a cutting slot, the wire arrangement slot is higher than the cutting slot, and the centerlines of the threaded hole and the guide hole are arranged on the same vertical line; and the cutter holder is made of insulating materials. The upper end of the bolt is provided with an insulating nut. Since the cutter holder is made of the insulating materials, the shearing type small bus cutter has good insulation properties, the number of dangerous points in secondary small bus cutting can be reduced effectively during replacement of a protective screen, power accidents can be decreased, and the working efficiency can be increased.

Description

Shearing little bus cropper

One. technical field: the utility model relates to a kind of power system secondary specialty screen in service and pushes up the cutting device of little bus under charged situation, particularly relates to a kind of shearing little bus cropper.

Two. background technology: the 10KV that present domestic protective relaying device producer forms a complete production network and the protection screen of above electric pressure, the required AC and DC power supply of its device and secondary AC voltage sample value all must be installed the little bus that the screen screen pushes up and extract from each.Little bus processes because of rules require the solid pure copper material of many employings; And the medium and small bus of newly-built substation secondary installing engineering all is to adopt whole to be communicated with the mode of laying; Install though promptly row's protection screen is independent separately; But the little bus on the screen top but is an integral body, and this just can withdraw from after need blocking charged little bus in service when just having caused protection screen to change separately.

Because working space is narrow and small, have only 30mm with spacing between the little bus of layer, two-layer up and down little bus spacing also has only 60mm, and to move little bus all be to kill on little bus structure with screw, can't use the such instrument of cast cutter to block operation.When the relay protection personnel worked at the little bus that blocks solid fine copper diameter 6mm and 8mm, the most general instrument of usefulness was exactly a cable grip.Use cable grip danger very,, open jaw and be easy to cause between adjacent two little buses short circuit or when blocking, cause accidents such as little busbar grounding because mistake is bumped protection screen screen top because the jaw position of cable grip all is a metal material.The relay protection personnel adopt insulating tape to be insulated with the way which floor insulating tape wraps more in the jaw position more; But insulating tape comes off because cable grip in truncated process, is exerted oneself excessive or runs into sharp object and break through regular meeting, and this just needs personnel to block a little bus will check that once finding has the place of insulation damages to wrap one deck again; Adjacent little bus also will separate just with megohmite insulant can carry out operation; Trouble very, and use cable grip heaviness very, inconvenience.

Three. the utility model content:

The utility model technical problem to be solved is: overcome the deficiency of prior art, a kind of reasonable in design, easy to use, high efficiency and the good shearing little bus cropper of security are provided.

The technical scheme of the utility model is: a kind of shearing little bus cropper, contain knife rest and shear knife, and said knife rest is the E font; Constitute by side plate, top board, intermediate plate and base plate; Said top board is provided with screwed hole, is combined with bolt in this screwed hole, and said intermediate plate is provided with pilot hole; Be set with said shear knife in the said pilot hole; Said base plate is provided with unwrapping wire groove and interrupts grooves, and said unwrapping wire groove is higher than said interrupts grooves, and the center line of said screwed hole and pilot hole is on same vertical line; Said knife rest is processed by insulating materials.

Said bolt upper end is provided with the insulation nut.Said pilot hole is square, and the shape of said shear knife and said pilot hole are complementary, and are matched in clearance between the two.

The beneficial effect of the utility model is:

1, the little bus of secondary that reduced in the protection screen replacing process of the utility model blocks the dangerous spot that exists in the work, has reduced electric power accident, has improved operating efficiency simultaneously.

2, the utility model knife rest adopts insulating materials to process, and good insulation preformance can not occur bumping electrical body because of mistake the accident that the staff gets an electric shock takes place, and in addition, the knife rest volume is little, and is in light weight, easily operation.

3, the utility model shear knife is seen from the front, and blade is curved, and this makes the cutter head of shear knife have the effect of fixing little bus, sees that from the side blade is " V " shape partially, makes the cutter hub of shear knife have enough mechanical strengths, increases service life.

4, the utility model applied range, internal diameter are that the little bus of 1mm to 8mm is all applicable, can conveniently accomplish blocking with jumper connection two of the little bus livewire work of relay protection specialty secondary and work mutually, and it is good to promote the back comprehensive benefit.

Four. description of drawings:

Fig. 1 is the structural representation of shearing little bus cropper;

Fig. 2 blocks the state diagram of little bus for shearing little bus cropper shown in Figure 1;

Fig. 3 blocks the side view of little bus for shearing little bus cropper shown in Figure 2;

Fig. 4 is the structural representation of bolt and shear knife among Fig. 1;

Fig. 5 is the side view of bolt shown in Figure 4 and shear knife;

Fig. 6 is the structural representation of knife rest shown in Figure 1;

Fig. 7 is an A-A cutaway view among Fig. 6;

Fig. 8 is the right view of knife rest shown in Figure 6;

Fig. 9 is a B-B cutaway view among Fig. 6.

Five. the specific embodiment:

Embodiment: referring to Fig. 1, among the figure, 1-knife rest, 2-bolt, 3-shear knife, 4-intermediate plate, the little bus of 5-, 6-pilot hole, 7-unwrapping wire groove, 8-interrupts grooves.

Shearing little bus cropper contains knife rest 1 and shear knife 3, and wherein, knife rest 1 is the E font; Be made up of side plate, top board, intermediate plate 4 and base plate, top board is provided with screwed hole, is combined with bolt 2 in this screwed hole; Intermediate plate 4 is provided with pilot hole 6, is set with shear knife 3 in the pilot hole 6, and base plate is provided with unwrapping wire groove 7 and interrupts grooves 8; Unwrapping wire groove 7 is higher than interrupts grooves 8, and the center line of screwed hole and pilot hole 6 is on same vertical line; Knife rest 1 is processed by insulating materials.

Bolt 2 upper ends are provided with the insulation nut.Pilot hole 6 is square, and the shape of shear knife 3 and pilot hole 6 are complementary, and are matched in clearance between the two.See that from the front blade of shear knife 3 is curved, this makes cutter head have the effect of fixing little bus, sees that from the side blade is " V " shape partially, makes cutter hub have enough mechanical strengths.

During use, at first need shear knife 3 be put into the pilot hole 6 of knife rest 1, again bolt 2 is screwed into from screwed hole; When pushing up the upper end of shear knife 3; The two movable coupling together can be rotated each other, can push shear knife 3 when rotating on knife rest 1 with assurance bolt 2.Unwrapping wire groove 7 blocks needs intercepted little bus 5, utilizes ratchet spanner to block bolt 2 upper ends insulation nut at last and turns clockwise, and promotes 3 pairs of little buses 5 of shear knife and blocks work.The little bus 5 that cuts off is arranged in interrupts grooves 8, when preventing that little bus 5 from cutting off, is cut off the adverse consequences that the swing of part causes.

Claims

1. a shearing little bus cropper contains knife rest and shear knife, and it is characterized in that: said knife rest is the E font; Be made up of side plate, top board, intermediate plate and base plate, said top board is provided with screwed hole, is combined with bolt in this screwed hole; Said intermediate plate is provided with pilot hole, is set with said shear knife in the said pilot hole, and said base plate is provided with unwrapping wire groove and interrupts grooves; Said unwrapping wire groove is higher than said interrupts grooves, and the center line of said screwed hole and pilot hole is on same vertical line; Said knife rest is processed by insulating materials.

2. shearing little bus cropper according to claim 1 is characterized in that: said bolt upper end is provided with the insulation nut.

3. shearing little bus cropper according to claim 1, it is characterized in that: said pilot hole is square, the shape of said shear knife and said pilot hole are complementary, and are matched in clearance between the two.