Tractor for metal sheath cable

Abstract

The utility model discloses a traction machine for a metal sheath cable, which comprises two tracks which are rotatably arranged at an interval, a traction space for the metal sheath cable to pass through is formed between the two tracks, the outer surfaces of the two tracks are provided with anti-skid lines, and the outer surfaces of the two tracks are also provided with a plurality of grooves which are arranged in parallel. The grooves are formed in the transmission direction of the metal sheath cable, and when the metal sheath cable is arranged in the traction space in a penetrating mode and the two crawler belts are matched to extrude the metal sheath cable, the two crawler belts can drive the metal sheath cable to move, and residual lubricating liquid outside the metal sheath cable is extruded into the grooves. The problems that in the prior art, in the production process of the metal sheath cable, the production speed is unstable easily due to slipping between the metal sheath cable and a crawler belt of a traction machine, and the traction force is affected by residual lubricating liquid outside the metal sheath cable are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of tractors, and particularly relates to a tractor for metal-sheathed cables. Background Art

[0002] At present, when producing cable sheaths, a crawler tractor is used to tow the cable. The pressure of the crawler of the tractor on the cable is adjusted according to the weight and diameter of the towed cable to increase the friction between the crawler and the cable, so as to achieve the purpose of towing the cable.

[0003] In recent years, with the improvement of fire protection requirements, the demand for fire-resistant cables in China has increased greatly. The outer sheath of fire-resistant cables is formed by bending metal copper strips or aluminum strips into tubes and then welding. In order to make the cable bendable, after welding and forming, the copper sheath or aluminum sheath for protecting the outer surface of the cable needs to be corrugated by a corrugating machine into a threaded shape. Since a lubricating fluid is sprayed on the outer surface of the sheath during the processing of the threaded structure of the cable metal sheath, the outer surface of the metal sheath will be dried after processing, but it is inevitable that residual lubricating fluid adheres to the outer surface of the metal sheath, and the residual lubricating fluid on the outer surface of the metal sheath will affect the traction force of the tractor.

[0004] In the prior art, when a crawler tractor is used to tow a fire-resistant cable during production, due to the overly smooth outer surface of the metal, the metal-sheathed cable often slips between the crawler and the cable, resulting in uneven towing speed, affecting the welding quality and thread pitch of the metal-sheathed cable. If the pressure of the crawler on the metal sheath is increased to increase the friction between the crawler and the metal sheath, the metal sheath will be flattened by the crawler of the tractor. To solve the above problems, a tractor for metal-sheathed cables needs to be developed. Summary of the Utility Model

[0005] The purpose of the utility model is to overcome the above technical deficiencies, provide a tractor for metal-sheathed cables, and solve the problems that during the production of metal-sheathed cables in the prior art, the metal-sheathed cable slips easily between the crawler of the tractor, resulting in unstable production speed, and the residual lubricating fluid on the outer surface of the metal-sheathed cable affects the traction force.

[0006] To achieve the above technical purpose, the utility model adopts the following technical solutions:

[0007] The present utility model provides a tractor for a metal-sheathed cable. The tractor includes two tracks that are spaced apart and rotatably arranged. A traction space for the metal-sheathed cable to pass through is formed between the two tracks. Anti-slip patterns are provided on the outer surfaces of both tracks, and a plurality of grooves arranged in parallel are also provided on the outer surfaces of both tracks. The grooves are arranged along the transmission direction of the metal-sheathed cable. When the metal-sheathed cable is passed through the traction space and the two tracks cooperate to squeeze the metal-sheathed cable, the two tracks can drive the metal-sheathed cable to move and squeeze the lubricating fluid remaining outside the metal-sheathed cable into the grooves.

[0008] In some embodiments, the tractor further includes a tensioning member for adjusting the squeezing force of the two tracks on the metal-sheathed cable.

[0009] In some embodiments, arc-shaped recessed areas are provided on the outer surfaces of both tracks, and the anti-slip patterns and the plurality of grooves are both located in the arc-shaped recessed areas.

[0010] In some embodiments, the anti-slip patterns are wavy with alternating concave and convex undulations.

[0011] In some embodiments, the metal-sheathed cable includes a conductor and a metal sheath provided outside the conductor, and thread-like protrusions are formed on the metal sheath.

[0012] In some embodiments, the anti-slip patterns are a plurality of grooves that can cooperate with the thread-like protrusions.

[0013] In some embodiments, both tracks are rubber tracks.

[0014] In some embodiments, the width of the grooves is 3 mm and the depth of the grooves is 3 mm.

[0015] In some embodiments, the number of the grooves is 2 - 6.

[0016] In some embodiments, the metal-sheathed cable is a copper-sheathed cable or an aluminum-sheathed cable.

[0017] Compared with the prior art, a traction machine for a metal-sheathed cable provided by the utility model has a traction space formed between two crawler belts for the metal-sheathed cable to pass through. Anti-slip patterns are provided on the outer surfaces of both crawler belts, and a plurality of grooves arranged in parallel are also provided on the outer surfaces of both crawler belts. The grooves are arranged along the transmission direction of the metal-sheathed cable. When the metal-sheathed cable is passed through the traction space and the two crawler belts cooperate to squeeze the metal-sheathed cable, the two crawler belts can drive the metal-sheathed cable to move. The anti-slip patterns can effectively improve the friction between the metal-sheathed cable and the two crawler belts, avoiding the situation of the metal-sheathed cable slipping between the two crawler belts. Moreover, after the two crawler belts wrap the metal sheath of the cable, the lubricating fluid remaining outside the metal sheath of the cable will be squeezed into the grooves, reducing the influence of the lubricating fluid remaining outside the metal sheath of the cable on the traction force. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 FIG. 6 is a schematic structural diagram of a traction machine for a metal-sheathed cable provided by an embodiment of the utility model;

[0019] Figure 2 FIG. 10 is a schematic structural diagram of a crawler belt provided by an embodiment of the utility model;

[0020] Figure 3 FIG. 14 is a schematic structural diagram of a metal-sheathed cable provided by an embodiment of the utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] In order to make the objectives, technical solutions and advantages of the utility model more clear and understandable, the following further describes the utility model in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the utility model.

[0022] In order to solve the technical problems that during the production of metal-sheathed cables, slipping between the metal-sheathed cable and the crawler belts of the traction machine easily leads to unstable production speed, and the lubricating fluid remaining outside the metal-sheathed cable affects the traction force, the utility model provides a traction machine for a metal-sheathed cable, which can improve the traction force of the traction machine on the metal-sheathed cable and maintain the stability of the traction speed.

[0023] Please refer to Figure 1 and Figure 3 , Figure 1 and Figure 3A traction machine for a metal-sheathed cable in an embodiment of the present utility model. The traction machine 1 includes two tracks 2 that are spaced apart and rotatably arranged. A traction space 10 for the metal-sheathed cable 3 to pass through is formed between the two tracks 2. Anti-slip patterns 21 are provided on the outer surfaces of both tracks 2, and a plurality of grooves 22 arranged in parallel are also provided on the outer surfaces of both tracks 2. The grooves 22 are arranged along the transmission direction of the metal-sheathed cable. When the metal-sheathed cable 3 passes through the traction space 10 and the two tracks 2 cooperate to squeeze the metal-sheathed cable 3, the two tracks 2 can drive the metal-sheathed cable 3 to move and squeeze the lubricant remaining outside the metal-sheathed cable 3 into the grooves 22.

[0024] It should be noted that the traction machine is not limited to a specific structure. The traction machine can be a common traction machine on the market. Among them, the traction machine further includes a tensioning member 4, and the tensioning member 4 is used to adjust the squeezing force of the two tracks 2 on the metal-sheathed cable 3.

[0025] In one embodiment, the tensioning member 4 includes an electric cylinder fixed in the traction machine, a mounting seat fixed to the telescopic end of the electric cylinder, and a plurality of pressure rollers rotatably arranged in the mounting seat, and the plurality of pressure rollers are in contact with the inner surface of the track.

[0026] On the basis of the above solution, in order to increase the contact area between the two tracks and the metal-sheathed cable, specifically, arc-shaped recessed areas 23 are provided on the outer surfaces of both tracks 2, and the anti-slip patterns 21 and the plurality of grooves 22 are both located in the arc-shaped recessed areas 23.

[0027] In one embodiment, the anti-slip pattern 21 is a corrugated shape with alternating convex and concave undulations. A plurality of annular protrusions are arranged at intervals on the metal-sheathed cable. The corrugated shape with convex and concave undulations can cooperate with the annular protrusions to increase the friction between the metal-sheathed cable and the two tracks and prevent the metal-sheathed cable from slipping during transmission.

[0028] In this specific embodiment, the metal-sheathed cable 3 includes a conductor 31 and a metal protective sleeve 32 provided outside the conductor 31, and a threaded protrusion is formed on the metal protective sleeve 32. Among them, the anti-slip pattern 21 is a plurality of grooves that can cooperate with the threaded protrusion. The threaded protrusion can cooperate with the plurality of grooves to prevent the metal-sheathed cable from slipping during transmission and improve the stability of the metal-sheathed cable during traction.

[0029] It should be noted that in order to ensure the service life of the crawler 2, both of the crawlers 2 are rubber crawlers. A rubber crawler is a crawler woven from rubber and steel wires. The rubber crawler has good wear resistance. The rubber material of the rubber crawler has very good wear resistance, which can reduce the wear of the crawler and extend the service life; the rubber crawler can provide better traction and stability, and is easy to maintain. The maintenance of the rubber crawler is relatively simple, and only requires regular inspection and replacement of worn parts.

[0030] It should be noted that since a lubricating fluid is sprayed on the outer surface of the metal protective sheath 32 during the processing of the threaded structure of the metal-sheathed cable 3, and the outer surface of the metal protective sheath 32 is dried after processing, it is inevitable that there will be residual lubricating fluid adhering to the outer surface of the metal protective sheath 32. In order to prevent the influence of the residual lubricating fluid outside the metal protective sheath 32 on the traction, and multiple grooves 22 are provided on the outer surfaces of both of the crawlers 2, specifically, 2 - 6 grooves 22 are arranged side by side. Specifically, the number of the grooves 22 is 5. In this specific embodiment, the width of the groove 22 is 3 mm, and the depth of the groove 22 is 3 mm.

[0031] In this specific embodiment, the metal-sheathed cable is a copper-sheathed cable. Of course, in other embodiments, the metal-sheathed cable is an aluminum-sheathed cable.

[0032] For a better understanding of the present invention, the following Figures 1 to 3 details the technical solution of the present invention: The metal-sheathed cable 3 is threaded through the traction space 10, and the two crawlers 2 cooperate to squeeze the metal-sheathed cable 3. When the two crawlers 2 rotate, the metal-sheathed cable 3 can be tractioned. Moreover, when the two crawlers 2 cover the metal-sheathed cable 3, the grooves on the crawlers can effectively separate the residual lubricating fluid on the metal-sheathed cable 3, reducing the influence of the residual lubricating fluid outside the metal-sheathed cable 3 on the traction force.

[0033] The specific implementation manners of the present invention described above do not constitute a limitation on the protection scope of the present invention. Any other corresponding changes and deformations made according to the technical concept of the present invention should be included within the protection scope of the claims of the present invention.

Claims

1. A traction machine for a metal sheathed cable, the traction machine comprising two crawlers arranged at intervals and rotating, a traction space for the metal sheathed cable to pass through is formed between the two crawlers, characterized in that: The outer surfaces of the two crawlers are both provided with anti-skid patterns, and the outer surfaces of the two crawlers are also provided with a plurality of parallel grooves, and the grooves are arranged along the transmission direction of the metal sheathed cable. When the metal sheathed cable is inserted into the traction space and the two crawlers cooperate to squeeze the metal sheathed cable, the two crawlers can drive the metal sheathed cable to move, and squeeze the lubricating liquid remaining outside the metal sheathed cable into the grooves; The outer surfaces of the two crawlers are both provided with arc-shaped recessed areas, and the anti-slip patterns and the plurality of grooves are both located in the arc-shaped recessed areas; The anti-slip pattern is in the shape of alternating concave and convex ripples; The metal sheathed cable comprises a conductor and a metal sheath arranged outside the conductor, and a threaded protrusion is formed on the metal sheath; The anti-slip lines are a plurality of grooves that can match with the thread-shaped protrusions.

2. A traction machine for a metal sheathed cable according to claim 1, characterized in that: The traction machine also includes a tensioner, which is used to adjust the squeezing force of the two crawlers on the metal sheathed cable.

3. A traction machine for a metal sheathed cable according to claim 1, characterized in that: Both crawlers are rubber crawlers.

4. A traction machine for a metal sheathed cable according to claim 1, characterized in that: The width of the groove is 3 mm, and the depth of the groove is 3 mm.

5. A traction machine for a metal sheathed cable according to claim 1, characterized in that: The number of the grooves is 2-6.

6. A traction machine for a metal sheathed cable according to claim 1, characterized in that: The metal sheathed cable is a copper sheathed cable or an aluminum sheathed cable.

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