CN114725847B - Roller positioning double-blade cable cone cutter and its use method - Google Patents

Abstract

The invention relates to a roller positioning double-blade type cable cone cutter which comprises a cone-shaped shell, wherein two cable core limiting sleeves, two roller blade adjusting units and a cable centering mechanism are respectively arranged on the cone-shaped shell, each roller blade adjusting unit comprises two blades, rollers and a threaded rod, rectangular through holes are formed in the blades, the rollers are arranged in the rectangular through holes and are in threaded connection with the threaded rod, and the blades are driven to inwards push by relative displacement of the screwing rollers and the threaded rod during adjustment. According to the invention, through the double-blade roller adjusting structure, accurate positioning of blade feeding is realized; the cable centering mechanism is adopted for fixing the main insulation, so that the main insulation of the cable can be better protected; the four rotary handles forming 90 degrees with each other are adopted, so that the tapering stroke is shortened, and time and labor are saved; the cable core limit sleeve is suitable for the accurate tapering operation of cables with different diameters, so that the tapering operation of the cable joint is accurate and standardized, and the cable core limit sleeve is suitable for conversion popularization and application.

Description

Roller positioning double-blade cable cone cutter and its use method

Technical Field

The invention belongs to the field of electric power engineering, and relates to a cable cone cutting technology, in particular to a roller positioning double-blade cable cone cutting device and a use method thereof.

Background Art

When making cable joints, in order to control the axial field strength at the end of the cable body insulation, the cable wire insulation end needs to be made into a reaction force cone structure. The reaction force cone structure is the interface between the filling insulation in the joint and the cable body insulation. This interface is the weak link of the cable joint. If it is not handled properly during manufacturing or installation, a reverse electric field is likely to occur along the direction of the stress cone, which will then break down the cable and cause failure, affecting the operation and safety life of the cable.

In the prior art, manual tapering is usually performed based on the experience of electricians, which places high demands on operators, is time-consuming and labor-intensive, and cannot achieve precise feeding of the blade. Therefore, a taper is needed that can quickly and safely taper the cable insulation layer, reduce damage to the main insulation, and achieve precise tapering of the cable insulation layer, so as to improve the efficiency of cable joint production and complete high-quality cable joint production.

Summary of the invention

The purpose of the present invention is to overcome the shortcomings of the prior art and provide a roller-positioned double-blade cable taper and a method of use, so as to standardize and accurately implement the tapering work of the insulation layer of the cable joint, effectively control the axial field strength at the insulation end of the cable body, reduce the insulation damage rate, shorten the joint production time, and improve the efficiency and accuracy of cable joint production.

The present invention solves the technical problem by adopting the following technical solutions:

A roller-positioned double-blade cable cone cutter comprises a conical shell, on which a cable core limiting sleeve, a roller blade adjustment unit and a cable centering mechanism are respectively arranged. Two roller blade adjustment units are arranged, including a blade, a roller and a threaded rod. The blade is arranged in a blade mounting groove of the conical shell, and the blade edge is arranged at the cable channel end inside the conical shell. A rectangular through hole is opened on the blade on the side corresponding to the blade edge, and the roller is arranged in the rectangular through hole. The roller is threadedly connected to the threaded rod installed in the blade mounting groove. During adjustment, the roller and the threaded rod are relatively displaced by screwing, thereby driving the blade to move inward.

The above-mentioned double roller blade adjustment unit realizes simultaneous taper cutting with double blades, which saves time and effort. At the same time, a scale is innovatively set on the roller, with a circle of 360 degrees. For every rotation of the roller, the blade advances 0.025mm toward the cable channel end inside the conical shell, achieving precise feeding of the blade, so that the taper cutting of the insulation layer of the cable connector can be achieved in a standardized and precise operation.

At the same time, a cable centering mechanism is arranged at the lower part of the conical shell, and the cable centering mechanism includes a positioning wheel and a unit limit pin. The positioning wheel is coaxially arranged at the large diameter end of the conical shell, and a plurality of unit sliding limit wheel mechanisms are linked in the positioning wheel. The unit sliding limit wheel mechanism includes an axle, a moving piece and a unit sliding limit wheel. The positioning wheel is connected to the moving piece through the axle, and the unit sliding limit wheel is installed at the other end of the moving piece. At least three unit sliding limit wheel mechanisms are arranged, which are evenly divided at an angle of 120° to each other. The sliding positioning of the cable is realized by the linkage of the positioning wheel and the unit sliding limit wheel, which plays a centering role and effectively avoids the cable from getting stuck or eccentric during the axial feeding process and causing damage to the cable.

The three unit limit pins are fixedly arranged at an angle of 120° to each other on the positioning wheel to fix the positioning wheel. Four rotating handles are fixedly arranged at an angle of 90° to each other at the connection between the lower part of the conical shell and the cable centering mechanism to realize labor-saving operation of cone cutting.

In addition, the cable core limiting sleeve is configured as a detachable structure of different diameters, including replaceable structures of 300mm cross-section, 240mm cross-section and 185mm cross-section, so as to be suitable for the fixation of cable cones of different cross-sections, and has a wide range of applications.

At the same time, the present invention also provides a method for using a roller-positioned double-blade cable cone cutter, comprising the following method steps:

(1) Insert the cable connector to be tapered from the large diameter end of the tapered housing (2) of the tapered machine, and screw the cable core limiting sleeve (1) corresponding to the cable diameter specification counterclockwise at the small diameter end;

(2) Adjust the cable centering mechanism, screw the positioning wheel (7), the positioning wheel (7) drives the shaft (14) to rotate, thereby realizing the movement of the movable plate (13), so that the sliding limit wheel (9) of the installation unit relative to the movable plate (13) is extended and retracted to realize the clamping and fastening of the cable, realize the adaptability of the cable moving clamping, and perform the centering operation. After the centering is completed, screw the limit pin (8) of the plug-in unit to clamp and fix the positioning wheel (7);

⑶ After the centering is completed, the rollers (5) of the two roller blade adjustment units are adjusted at the same time to drive the blade (6) to move a fixed displacement. A scale is set on the roller (5), and one circle is 360 degrees. For every rotation of the roller 5, the blade (6) is pushed 0.025 mm toward the inner cable channel end of the conical housing (2), so that the blade (6) is fed more accurately. After the blade (6) is adjusted and fixed, the blade (6) is fixed by the fixing screw (10);

⑷ After the above-mentioned centering and positioning are completed, the cable connector is tapered by rotating the rotary handle 4. The two relative rotary handles 180 degrees to each other complete the cable tapering for one circle every 180 degrees rotation, which effectively shortens the cable tapering stroke and saves time and effort.

The advantages and positive effects of the present invention are:

1. The present invention innovatively designs a bidirectional roller blade adjustment unit, and realizes precise positioning of the cone cutting depth by setting the roller rotation angle and the blade feed distance. During adjustment, the roller and the threaded rod are relatively displaced to drive the blade inward. At the same time, a scale is set on the roller, and one circle is 360 degrees. For every degree of rotation of the roller, the blade advances 0.025mm toward the cable channel end inside the conical shell, quantifying the roller screwing operation and the blade feed distance, thereby realizing precise feeding.

2. The present invention is provided with a cable centering mechanism, which realizes the sliding positioning of the cable through the linkage of the positioning wheel and the unit sliding limit wheel, and uses the unit limit pin for 120° positioning, which plays a centering role while reducing the static friction of the cable feeding and effectively avoiding the cable from getting stuck or eccentric during the axial feeding process and causing damage to the cable.

3. In order to solve the problem of instability of the wire core outlet module during operation, the present invention has a cable core limiting sleeve on the upper small diameter end of the conical shell which can be detachably screwed counterclockwise. When the cone cutting operation is performed, the operating handle rotates clockwise, and the cable core limiting sleeve rotates counterclockwise to tighten, which effectively avoids the cable core limiting sleeve from falling off during actual use. At the same time, the cable core limiting sleeve is arranged as a detachable structure with different specifications and diameters, including replaceable structures with 300mm cross-section, 240mm cross-section and 185mm cross-section, which is suitable for cables with different diameters.

4. The double blades and four rotating handles of the present invention can effectively save the taper cutting stroke, making the taper cutting stroke shorter, the movement amplitude smaller, more stable and more labor-saving.

5. The design of the present invention is scientific and reasonable. The cone cutter is made of metal material as a whole, which is light, compact and easy to use. The double-blade roller adjustment structure can realize precise positioning of the blade feed; the main insulation is fixed by a pulley type, which can better protect the main insulation of the cable; four rotating handles at 90° to each other are used to shorten the cone cutting stroke, saving time and effort; it is suitable for precise cone cutting operations on cables of different diameters, so that the cable joint cone cutting operation can be precise and standardized, and is suitable for vigorous promotion and transformation applications.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of the main stereoscopic structure of the present invention;

FIG2 is a bottom-up perspective view of the present invention;

FIG3 is a plan front view of the present invention;

Fig. 4 is a cross-sectional view of the A-A section in Fig. 3;

FIG5 is a bottom plan view of FIG3 ;

FIG6 is a partial enlarged schematic diagram of the connection structure between the roller and the blade in section A of FIG4 ;

FIG. 7 is a partial enlarged schematic diagram of the connection structure between the positioning wheel of part B and the internal unit sliding limiting wheel in FIG. 4 ,

In the figure, 1 is a cable core limiting sleeve, 2 is a conical shell, 3 is a mounting groove, 4 is a rotating handle, 5 is a roller, 6 is a blade, 7 is a positioning wheel, 8 is a unit limiting pin, 9 is a unit sliding limiting wheel, 10 is a fixing screw, 11 is a threaded rod, 12 is a rectangular through hole, 13 is a moving sheet, and 14 is a shaft rod.

DETAILED DESCRIPTION

The present invention is further described in detail below through specific examples. The following examples are only illustrative and not restrictive, and the protection scope of the present invention cannot be limited thereto.

A roller 5 positioned double-blade cable cone cutter, as shown in Figures 1 and 2, includes a conical shell 2, a cable core limiting sleeve 1 is detachably arranged on the upper small diameter end of the conical shell 2 by being screwed counterclockwise, two roller blade adjustment units are symmetrically arranged on the conical shell 2, a cable centering mechanism is arranged at the lower large diameter end of the conical shell 2, and four rotating handles 4 are fixedly arranged at 90° to each other at the connection between the lower part of the conical shell 2 and the cable centering mechanism.

As shown in FIG. 3 , FIG. 4 and FIG. 5 , the cable core limiting sleeve 1 is configured as a detachable structure with different diameters, including replaceable structures with a cross section of 300 mm, a cross section of 240 mm and a cross section of 185 mm.

As shown in Figure 6, the roller blade adjustment unit includes a blade 6, a roller 5 and a threaded rod 11. The blade 6 is arranged in the blade mounting groove 3 of the conical shell 2, and the blade edge of the blade 6 is arranged at the cable channel end inside the conical shell 2. A rectangular through hole 12 is opened on the blade 6 on the side corresponding to the blade edge, and the roller 5 is arranged in the rectangular through hole 12. The roller 5 is threadedly connected with the threaded rod 11 installed in the blade 6 mounting groove. During adjustment, the roller 5 and the threaded rod 11 are relatively displaced by screwing, thereby driving the blade 6 to move inward. The blade 6 is fixed in the blade mounting groove 3 by a fixing screw 10. A scale is set on the roller 5, and a circle is 360 degrees. For every degree of rotation of the roller 5, the blade 6 advances 0.025 mm toward the cable channel end inside the conical shell 2, quantifying the screwing operation of the roller 5 and the feeding distance of the blade 6, thereby achieving precise feeding.

The cable centering mechanism includes a positioning wheel 7 and a unit limiting pin 8. The positioning wheel 7 is coaxially arranged at the large diameter end of the conical shell 2, and three unit limiting pins 8 are clamped at its upper end at an angle of 120° to each other. As shown in Figure 7, a plurality of unit sliding limiting wheel mechanisms are linked in the positioning wheel 7. The unit sliding limiting wheel mechanism includes an axle rod 14, a moving piece 13 and a unit sliding limiting wheel 9. The positioning wheel 7 is connected to the moving piece 13 through the axle rod 14, and the unit sliding limiting wheel 9 is installed at the other end of the moving piece. At least three unit sliding limiting wheel mechanisms are arranged, which are evenly distributed at an angle of 120° to each other to achieve sliding positioning of the cable.

Method of use of the present invention:

When in use, the cable connector to be tapered is passed in from the large diameter end of the tapered device, and the cable core limiting sleeve 1 that is adapted to the cable diameter specification is installed at the small diameter end. It should be noted that it should be screwed counterclockwise for installation; then the cable centering mechanism is adjusted, and the positioning wheel 7 is screwed, and the positioning wheel drives the shaft rod 14 to rotate, thereby realizing the movement of the moving piece 13, so that the sliding limiting wheel 9 with the installation unit of the moving piece 13 is telescopic to realize the clamping and tightening of the cable, realize the adaptability of the cable mobile clamping, and perform the centering operation. After the centering is completed, the plug-in and unplug unit limit is screwed. The positioning pin 8 is used to fix the positioning wheel 7 by clamping; after the centering is completed, the rollers 5 of the two roller blade adjustment units are adjusted at the same time to drive the blade 6 to move a fixed displacement. A scale is set on the roller 5, and one circle is 360 degrees. For every degree of rotation of the roller 5, the blade 6 advances 0.025mm toward the inner cable channel end of the conical shell 2, so that the blade 6 is fed more accurately. After the blade 6 is adjusted and fixed, it is fixed by the fixing screw 10; after the above-mentioned centering and positioning are completed, the cable connector is tapered by screwing the rotating handle 4.

The setting of the limit pin 8 in the cable centering mechanism effectively improves the accuracy and stability of centering, the setting of the unit sliding limit wheel 9 makes the cable propulsion sliding adaptable, and the setting of the double blades 6 effectively improves the stability and work efficiency of cone cutting.

Although the embodiments of the present invention are disclosed for illustrative purposes, those skilled in the art will appreciate that various substitutions, changes and modifications are possible without departing from the spirit and scope of the present invention and the appended claims. Therefore, the scope of the present invention is not limited to the contents disclosed in the embodiments.

Claims (7)

1. The utility model provides a roller positioning double knives formula cable tapering ware, includes toper casing (2), its characterized in that: the utility model discloses a cable wire limiting sleeve (1) is detachably screwed on the small diameter end at the upper part of a conical shell (2), two roller blade adjusting units are symmetrically arranged on the conical shell (2), a cable centering mechanism is arranged on the large diameter end at the lower part of the conical shell (2), each roller blade adjusting unit comprises a blade (6), a roller (5) and a threaded rod (11), the blade (6) is arranged in a blade mounting groove (3) of the conical shell (2), the blade of the blade (6) is arranged at the cable channel end at the inner side of the conical shell (2), a rectangular through hole (12) is formed in the side of the blade (6) corresponding to the blade, the roller (5) is arranged in the rectangular through hole (12), the roller (5) is in threaded connection with the threaded rod (11) arranged in the mounting groove of the blade (6), the roller (5) is driven by relative displacement between the roller (5) and the threaded rod (11) during adjustment, the roller (5) is driven to inwards advance, scales of 360 degrees are arranged on the roller (5), each side of the roller (5) is screwed into the cable channel (2) at one degree of rotation of the conical shell (5),

The application method of the roller positioning double-blade type cable tapering device comprises the following steps:

⑴ The cable joint to be tapered is transmitted from the large-diameter end of the tapered shell (2) of the taper device, and a cable core limiting sleeve (1) which is suitable for the cable diameter specification is screwed and installed at the small-diameter end in a anticlockwise manner;

⑵ Adjusting a cable centering mechanism, screwing a positioning wheel (7), driving a shaft lever (14) to rotate by the positioning wheel (7), and further realizing the movement of a moving sheet (13), so that the moving sheet (13) is telescopic compared with a sliding limiting wheel (9) of a mounting unit to realize the clamping and fastening of a cable, the adaptability of moving and clamping the cable is realized, the centering operation is performed, and after centering is finished, screwing a limiting pin (8) of a plugging unit to clamp and fix the positioning wheel (7);

⑶ After centering, the rollers (5) of the two roller blade adjusting units are adjusted simultaneously to drive the blades (6) to move for fixed displacement, scales are arranged on the rollers (5), 360 degrees are formed in a circle, each time the rollers (5) rotate for one degree, the blades (6) are pushed to the inner side cable channel end of the conical shell (2) by 0.025mm, the feeding of the blades (6) is more accurate, and the blades (6) are fixed through the fixing screws (10) after the blades (6) are adjusted and fixed;

⑷ After the centering positioning is finished, the tapering work of the cable connector is realized by screwing the rotary handles (4), and the tapering work of the cable connector is finished once the two opposite screwing rotary handles which are 180 degrees each other rotate 180 degrees.

2. The roller positioning double-blade cable tapering device as in claim 1 wherein: the cable centering mechanism comprises a positioning wheel (7) and a unit limiting pin (8), the positioning wheel (7) is coaxially arranged at the large-diameter end of the conical shell (2), a plurality of unit sliding limiting wheel mechanisms are linked in the positioning wheel (7), each unit sliding limiting wheel mechanism comprises a shaft rod (14), a moving plate (13) and a unit sliding limiting wheel (9), the positioning wheel (7) is connected with the moving plate (13) through the shaft rod (14), and the other end of the moving plate is provided with the unit sliding limiting wheel (9).

3. The roller positioning double-blade cable tapering device as in claim 1 wherein: four rotary handles (4) are fixedly arranged at the joint of the lower part of the conical shell (2) and the cable centering mechanism at an angle of 90 degrees.

4. The roller positioning double-blade cable tapering device as in claim 1 wherein: the cable core limiting sleeve (1) is arranged to be of a detachable structure and comprises a replaceable structure with a 300mm section, a 240mm section and a 185mm section.

5. The roller positioning double-blade cable tapering device as in claim 1 wherein: the blade (6) is fixed in the blade mounting groove (3) through a fixing screw (10).

6. The roller positioning double-blade cable tapering device as in claim 2, wherein: the three unit limiting pins (8) are clamped on the positioning wheel (7) at an angle of 120 degrees.

7. The roller positioning double-blade cable tapering device as in claim 2, wherein: at least three unit sliding limiting wheel (9) mechanisms are arranged and are arranged at 120-degree angles.