CN103986095A - Longitudinal electric cutter for cable outer sheath - Google Patents

Abstract

The invention relates to a longitudinal electric cutter for the outer sheath of a secondary cable, which includes an upper handle and a lower handle, the lower handle is connected to the power head bracket through a return spring, the upper handle is fixedly connected to the power head bracket; the power head bracket is fixed with The blade; the supporting wheel I and the supporting wheel II are fixed under the blade; the power head is connected with the power source through the connecting shaft I. Using the present invention to cut the cable, the cut cable moves on the supporting wheel, the direction of the blade rotation is opposite to the direction of the cable feed, the cutting resistance of the blade is smaller than the cable traction force, the stripping efficiency of the outer sheath of the cable can be improved, and the labor intensity can be reduced , reducing cable damage and avoiding potential safety hazards. Blades of different sizes can be installed on the power knife bracket, and the distance between the blade and the cable can be convenient for stripping and cutting cables of different thicknesses, which is economical and applicable.

Description

A longitudinal electric cutter for outer sheath of cables

technical field

The invention relates to an electric cable sheath electric cutter, in particular suitable for longitudinal cutting of secondary cable sheaths and belongs to the field of mechanical processing.

Background technique

With the acceleration of the construction of UHV power grids and urban and rural distribution networks, the construction of new substations, the renovation of old substations, and the aggravation of technical transformation tasks, the secondary cable stripping and cutting of substations has become an important part of the project. Only one line Putting into operation, it is necessary to strip and cut dozens or hundreds of secondary cables. The outer sheath of the secondary cable is mostly made of polyvinyl chloride plastic material. This material has good insulation performance, corrosion resistance, heat resistance, water resistance, and strong sealing performance, but it is greatly affected by temperature. When the temperature drops, due to The change of molecular structure greatly increases its hardness, which brings great inconvenience to cable construction. Since there is no special secondary cable stripping and cutting tool on the job site at present, it is very unsafe for workers to use ordinary cable cutters to strip and cut cables longitudinally. Construction workers are often cut by the blades, and the efficiency is low and the labor intensity is high. In addition, due to the different operating methods and strengths of the staff, damage to the cable core wire insulation layer and core wire or incomplete stripping often occurs. If the cable insulation layer is damaged, it is easy to cause a short circuit in the secondary circuit, which will affect the safety and stability of the power grid. Operation poses hazards.

Contents of the invention

The technical problem to be solved by the present invention is that the efficiency of the traditional cable cutter for stripping and cutting secondary cables is low and there are potential safety hazards. In order to solve the above problems, a longitudinal electric cutter for the outer sheath of the cable is provided, which solves the problems of the original cable stripping and cutting work, which is labor-intensive, easily endangers personal safety, and damages the cable.

The purpose of the present invention is achieved in the following manner:

In the present invention, the lower handle is connected with the power head bracket through the return spring, and the upper handle is fixedly connected with the power head bracket; blades are fixed on the power head bracket; the power head is connected with the power source through the connecting shaft I; Supporting roller I and supporting roller II are fixed below the blade.

The supporting wheel I and the supporting wheel II are fixed below the blade in parallel.

When not working, the upper handle is parallel to the lower handle, and the power head is 90° to the handle.

The rotation direction of the blade is opposite to the feeding direction of the cable, and the cutting resistance of the blade is smaller than the pulling force of the cable.

The power head bracket is fixed on the safety shield fixing platform through the safety shield fixing screw hole.

The upper handle and one end of the lower handle are fixedly connected by a fixed knife screw and a brake nut.

Compared with the prior art, the present invention has the following beneficial effects: 1. The cut cable moves on the supporting wheel, the direction of blade rotation is opposite to the direction of cable feed, and the cutting resistance of the blade is less than the cable traction force, which can improve the strength of the cable outer sheath. Stripping and cutting efficiency reduces labor intensity, reduces cable damage, and avoids potential safety hazards. 2. The power knife bracket of the present invention can be equipped with blades of different sizes, and the distance between the blade and the cables can be convenient for stripping and cutting cables of different thicknesses, which is economical and applicable. 3. The present invention has the advantages of simple structure, convenient operation, strong practicability and low cost. 4. There is a return spring connected between the power head bracket and the lower handle. When pressing manually, it saves time, electricity and labor.

Description of drawings

Figure 1 is a schematic diagram of the front view of a longitudinal electric cutter for the outer sheath of a cable.

Fig. 2 is a top view structure schematic diagram of a longitudinal electric cutter for the outer sheath of a cable.

Among them, 1. Safety shield fixing platform; 2. Power head bracket; 3. Blade; 4. Connecting shaft I; 5. Secondary cable; 6. Supporting wheel I; 7. Return spring; 8. Upper handle; 9. Handle fixing screw; 10, lower handle; 11, fixed knife screw; 12, brake nut; 13, pressure knife screw; 14, pressure knife block; ; 18. Coupling shaft II; 19. Self-locking nut; 20. Power head; 21. Safety shield fixing screw hole; 22. Supporting wheel flat pad; 23. Supporting wheel II.

Detailed ways

As shown in Figures 1 and 2, a longitudinal electric cutter for the outer sheath of a secondary cable of the present invention is connected with the power head bracket 2 by the lower handle 10 through the return spring 7, and the upper handle 8 is fixedly connected with the power head bracket 2 ;The blade 3 is fixed on the power head bracket 2 through the screw 13, the pressure knife block 14 and the flat pad 15; the power head 20 is connected with the power source through the connecting shaft I4; the support wheel Ⅰ6 and the support wheel Ⅱ 23 are fixed under the blade 3 . Supporting roller I6 and supporting roller II 23 are fixed below the blade 3 in parallel. A return spring 7 is connected between the power head support 2 and the lower handle 8 . When not working, the upper handle 8 is parallel to the lower handle 10, and the power head 20 is 90° to the handle. The rotation direction of the blade 3 is opposite to the feeding direction of the cable 5. The cutting resistance of the blade 3 is smaller than the traction force of the cable 5, and the design is more stable. The power head 20 drives the blade to rotate at a high speed, and quickly cuts the outer sheath of the cable along the axial direction. The power head bracket 2 is fixed on the safety shield fixing platform 1 through the safety shield fixing screw hole 21 . One end of the upper handle 8 and the lower handle 10 is fixedly connected by a fixed knife screw 11 and a brake nut 12 . The upper handle 10 is connected with the supporting wheel II 23 through the handle fixing screw 9, and the supporting wheel flat pad 22 is provided at the connection; the coupling shaft II 18 is connected with the supporting wheel Ⅰ6 through the self-locking nut 19; the supporting wheel is arranged on the supporting wheel shaft 16, and the supporting wheel A circlip 17 is provided.

The specific working process is as follows:

Adjust the fixed knife screw 11 to make the cutter cut down the correct size, tighten the brake nut 12 after no mistake, open the power head 20 to determine that the installation direction of the blade 3 is opposite to the direction of the cable 5 feed. Put the cable between the cutter blade 3 and the supporting roller Ⅰ6 and supporting roller Ⅱ23, press down the upper handle 8, and the safety shield moves upward (a certain force is required to open the safety shield). Cutting starts at a position a few meters away from the end of the cable. Two people cooperate to implement the work. One person fixes the cable, and the other moves backward with a knife. After the cutting is completed, turn off the switch, unclamp the handle, and under the action of the back-moving spring 7, the upper and lower handles are opened naturally, and the shield seals the blade 3 completely immediately, and the blade 3 returns to the protection state immediately.

Claims (6)

1. a secondary cable jacket longitudinal electric cutting knife, it is characterized in that: it comprises upper handle (8) and lower handle (10), lower handle (8) is connected with power head bracket (2) by back-moving spring (7), and upper handle (8) is fixedly connected with power head bracket (2); On described power head bracket (2), be fixed with blade (3); Described blade (3) below is fixed with support roller I (6) and support roller II (23); Described unit head (20) is connected with power source by connecting axle I (4).

2. a kind of secondary cable jacket longitudinal electric cutting knife according to claim 1, is characterized in that: described support roller I (6) be fixed on blade (3) below parallel with support roller II (23).

3. a kind of secondary cable jacket longitudinal electric cutting knife according to claim 1, is characterized in that: when operating state, described upper handle (8) is not parallel with lower handle (10), and unit head (20) is 90 ° with handle.

4. a kind of secondary cable jacket longitudinal electric cutting knife according to claim 1, is characterized in that: the direction of described blade (3) rotation is contrary with cable (5) direction of feed, and blade (3) Cutting Drag is less than cable (5) tractive effort.

5. a kind of secondary cable jacket longitudinal electric cutting knife according to claim 1, is characterized in that: described power head bracket (2) is fixed on safety guard fixed station (1) by safety guard fixing threaded hole (21).

6. a kind of secondary cable jacket longitudinal electric cutting knife according to claim 1, is characterized in that: described upper handle (8) is fixedly connected with stop-nut (12) by stationary knife screw (11) with lower handle (10) one end.