Special traction device for flame-retardant B1 cable

Abstract

The utility model belongs to the technical field of cable traction devices, particularly relates to a special traction device for a flame-retardant B1 cable, and aims to solve the problems that an oxygen barrier layer needs to be solidified for a certain time after being extruded, the oxygen barrier layer of the cable is pressed and deformed after passing through a crawler-type traction device during production, the thickness of the oxygen barrier layer on the circumference of the cable is not uniform, and the cable is not round. According to the scheme, the cable traction device comprises a U-shaped frame, four traction wheels are rotationally installed on the inner wall of the U-shaped frame in a rectangular array mode, and the same R-groove belt is in transmission connection between every two transverse traction wheels. When the device is used, a flat belt adopted in crawler-type traction is changed into the R-groove belts, and the distance between the two R-groove belts is adjusted through the adjusting assembly in front of an inlet of the traction device, so that the device is adaptive to the outer diameters of different cables, and the cables are naturally branched through the R-groove belts; and the phenomena that the oxygen barrier layer is deformed and the roundness of the cable is poor due to the fact that a flat belt is pressed are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of cable traction devices, in particular to a special traction device for flame-retardant B1 cables. Background Art

[0002] In the product structure of B1 flame-retardant cable, an oxygen-insulating layer is extruded after cabling to ensure that the combustion performance of the cable meets the requirements of GB31247-2014 "Classification of Combustion Performance of Electric Cables and Optical Cables". The oxygen-insulating layer material is a special material mixed with aluminum hydroxide, porcelain powder, sodium silicate (water glass), powdered inorganic filler materials, etc. It is soft when extruded. Although it is wrapped with halogen-free tape as a tightening protection after extrusion, the oxygen-insulating layer still has the phenomenon of deformation due to pressure.

[0003] After the oxygen barrier layer is extruded, it is tied with a tape and collected on the cable reel through a traction device. The traction device currently used in wire and cable equipment is configured in accordance with JB / T 4032.1-2013 "Traction device for common components of cable equipment". Generally, crawler traction is adopted. The crawler belts are in the form of flat belts, synchronous belts (toothed belts) and chain rubber blocks. Because the oxygen barrier layer takes a certain amount of time to solidify after being extruded, the cable oxygen barrier layer will be compressed and deformed after passing through the crawler traction device during production, resulting in uneven thickness of the oxygen barrier layer on the circumference of the cable and the cable is not round, affecting the cable performance and appearance quality.

[0004] In view of the above problems, the utility model document proposes a special traction device for flame-retardant B1 cables. Utility Model Content

[0005] The utility model provides a special traction device for flame-retardant B1 cables, which solves the problem in the prior art that the oxygen-isolating layer needs a certain amount of time to solidify after being extruded, and the oxygen-isolating layer of the cable is compressed and deformed after passing through the crawler-type traction device during production, resulting in uneven thickness of the oxygen-isolating layer on the circumference of the cable, and the cable is not round, thus affecting the performance and appearance quality of the cable.

[0006] The utility model provides the following technical solutions:

[0007] A flame retardant B cable special traction device, comprising:

[0008] A U-shaped frame, wherein four traction wheels are rotatably mounted in a rectangular array on the inner wall of the U-shaped frame, and the same R-groove belt is connected between every two lateral traction wheels;

[0009] A driving assembly is arranged on the U-shaped frame and is used to drive the traction wheel to rotate. The driving assembly includes an L-shaped frame fixedly arranged on the outer wall of the U-shaped frame, and a driving motor is fixedly arranged on the outer wall of the L-shaped frame;

[0010] The adjusting component is arranged on the R-groove belt and is used to adjust the distance between the two R-groove belts. The adjusting component includes an adjusting plate arranged in the R-groove belt. The adjusting plate is arranged in a shape that is adapted to the R-groove belt, and the two adjusting plates are arranged opposite to each other.

[0011] In a possible design, the mounting rods of the two traction wheels in the longitudinal direction both penetrate the outer wall of the U-shaped frame and are fixedly provided with gears, the two gears are meshed with each other, and the output shaft of the drive motor penetrates the inner wall of the L-shaped frame and is fixedly connected to the center of one of the gears.

[0012] In a possible design, multiple rows of rollers are fixedly mounted on the contact surface between the adjustment plate and the inner wall of the R-groove belt.

[0013] In a possible design, a pressure plate is fixedly provided on the other side of the adjustment plate, and the pressure plate extends outside the R-groove belt. An electric push rod is fixedly installed at the middle edge of the other side of the pressure plate, and the other end of the electric push rod is fixedly connected to the inner wall of the U-shaped frame.

[0014] In a possible design, two telescopic sleeves are fixedly arranged between the U-shaped frame and the pressure plate, and the two telescopic sleeves are symmetrically arranged with the electric push rod as the center, and the maximum telescopic range of the telescopic sleeves is compatible with the electric push rod.

[0015] In a possible design, a rotating plate is fixedly provided at both ends of the U-shaped frame, and two guide rods are rotatably installed on the top of the rotating plate.

[0016] It should be understood that the above general description and the following detailed description are merely exemplary and do not limit the present invention.

[0017] In the present application, when in use, the corresponding gears are driven to rotate by the driving motor, thereby driving the two gears to rotate simultaneously, thereby driving the corresponding two traction wheels to rotate. Under the transmission of the two R-groove belts, the four traction wheels rotate simultaneously to pull the cable. A circular contact surface is formed through the upper and lower R-groove belts, thereby avoiding the phenomenon of deformation of the oxygen barrier layer and poor roundness of the cable due to pressure when using a flat belt;

[0018] When the outer diameter of the cable is too small, it is necessary to adjust the distance between the two R-groove belts. The extension of the output end of the electric push rod is used to drive the pressure plate downward, thereby driving the adjustment plate downward. The middle sections of the two R-groove belts are driven closer to each other through the lifting of the roller, thereby reducing the distance between the two R-groove belts to cater to the outer diameters of different cables and improve the applicability of the device.

[0019] The utility model has the following beneficial effects:

[0020] The utility model changes the flat belt used in the crawler traction of JB / T 4032.1-2013 "Traction device for common components of cable equipment" into an R-groove belt, and adjusts the distance between two R-groove belts by adjusting components before the entrance of the traction device, so as to adapt to the outer diameters of different cables, and naturally divides the lines through the R-groove belts, thereby avoiding the deformation of the oxygen insulation layer and the poor roundness of the cable caused by the pressure when using the flat belt.

[0021] The utility model arranges a roller, and when the R-groove belt rotates, the roller is driven to rotate, thereby reducing the friction between the adjustment plate and the R-groove belt, avoiding increasing the carrying load of the driving motor; by arranging a telescopic sleeve, when the output end of the electric push rod is extended and retracted, the two telescopic sleeves are synchronously extended and retracted to achieve the effect of keeping the force on both ends of the pressure plate uniform; by arranging a guide rod, the cable passes between the two guide rods, which plays a role of basic guidance, avoiding excessive swinging amplitude of the cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic diagram of the three-dimensional structure of a flame-retardant B1 cable special traction device provided by an embodiment of the utility model;

[0023] Figure 2 A schematic structural diagram of another perspective of a flame-retardant B1 cable special traction device provided by an embodiment of the utility model;

[0024] Figure 3 A schematic diagram of the transmission structure of a flame-retardant B1 cable special traction device provided by an embodiment of the utility model;

[0025] Figure 4 A schematic diagram of the structure of an adjustment plate of a flame-retardant B1 cable-specific traction device provided in an embodiment of the utility model.

[0026] Figure numerals: 1. U-shaped frame; 2. traction wheel; 3. R-groove belt; 4. gear; 5. L-shaped frame; 6. driving motor; 7. adjustment plate; 8. roller; 9. pressure plate; 10. electric push rod; 11. telescopic sleeve; 12. rotating plate; 13. guide rod. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0028] Embodiment 1

[0029] Please refer to Figure 1-4 , a traction device, comprising:

[0030] A U-shaped frame 1, on the inner wall of which four traction wheels 2 are rotatably mounted in a rectangular array, and the same R-groove belt 3 is connected between every two transverse traction wheels 2;

[0031] A driving assembly is arranged on the U-shaped frame 1 and is used to drive the traction wheel 2 to rotate. The driving assembly includes an L-shaped frame 5 fixedly arranged on the outer wall of the U-shaped frame 1. A driving motor 6 is fixedly arranged on the outer wall of the L-shaped frame 5. The driving motor 6 is connected to an external power source through an external switch and energized;

[0032] The mounting rods of the two longitudinal traction wheels 2 penetrate the outer wall of the U-shaped frame 1 and are fixedly provided with gears 4, the two gears 4 are meshed with each other, and the output shaft of the driving motor 6 penetrates the inner wall of the L-shaped frame 5 and is fixedly connected to the center of one of the gears 4;

[0033] In this embodiment, the corresponding gear 4 is driven to rotate by the driving motor 6, thereby driving the two gears 4 to rotate simultaneously, thereby driving the corresponding two traction wheels 2 to rotate. Under the transmission of the two R-groove belts 3, the four traction wheels 2 rotate simultaneously to pull the cable. A circular contact surface is formed through the upper and lower R-groove belts 3, thereby avoiding the deformation of the oxygen barrier layer and poor roundness of the cable due to pressure when using a flat belt.

[0034] An adjustment component is arranged on the R-groove belt 3 and is used to adjust the distance between the two R-groove belts 3. The adjustment component includes an adjustment plate 7 arranged in the R-groove belt 3. The adjustment plate 7 is arranged in a shape adapted to the R-groove belt 3. The two adjustment plates 7 are arranged opposite to each other. Multiple rows of rollers 8 are fixedly installed on the contact surface between the adjustment plate 7 and the inner wall of the R-groove belt 3. When the R-groove belt 3 rotates, the rollers 8 are driven to rotate, thereby reducing the friction between the adjustment plate 7 and the R-groove belt 3, thereby avoiding increasing the carrying load of the driving motor 6;

[0035] A pressure plate 9 is fixedly arranged on the other side of the adjustment plate 7, and the pressure plate 9 extends to the outside of the R groove belt 3. An electric push rod 10 is fixedly installed at the middle edge of the other side of the pressure plate 9, and the other end of the electric push rod 10 is fixedly connected to the inner wall of the U-shaped frame 1;

[0036] In this embodiment, when the outer diameter of the cable is too small, it is necessary to adjust the distance between the two R-groove belts 3. The extension of the output end of the electric push rod 10 is used to drive the pressure plate 9 to move downward, thereby driving the adjustment plate 7 to move downward. The middle sections of the two R-groove belts 3 are driven closer to each other through the lifting of the roller 8, thereby reducing the distance between the two R-groove belts 3 to cater to the outer diameters of different cables and improve the applicability of the device.

[0037] The present application can be used for the pulling of flame-retardant B1 cables, and can also be used in other fields applicable to the present application.

[0038] Embodiment 2

[0039] Improvements based on Example 1:

[0040] A flame-retardant B1 cable special traction device, which is used in the field of cable traction devices, two telescopic sleeves 11 are fixedly arranged between the U-shaped frame 1 and the pressure plate 9, and the two telescopic sleeves 11 are symmetrically arranged with the electric push rod 10 as the center. The maximum telescopic range of the telescopic sleeve 11 is adapted to the electric push rod 10. When the output end of the electric push rod 10 is telescoped, the two telescopic sleeves 11 are telescoped synchronously to achieve the effect of keeping the force on both ends of the pressure plate 9 uniform;

[0041] Both ends of the U-shaped frame 1 are fixedly provided with a rotating plate 12, and two guide rods 13 are rotatably installed on the top of the rotating plate 12. The cable passes through the two guide rods 13 to play a basic guiding role to prevent the cable from swinging too much.

[0042] However, as is well known to those skilled in the art, the working principles and wiring methods of the drive motor 6 and the electric push rod 10 are commonplace, and are conventional means or common knowledge, and will not be elaborated here. Those skilled in the art may make any optional selections according to their needs or convenience.

[0043] The above are only specific implementations of the utility model, but the protection scope of the utility model is not limited to them. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model; in the absence of conflicts, the embodiments of the utility model and the features in the embodiments can be combined with each other. Therefore, the protection scope of the utility model shall be based on the protection scope of the claims.

Claims

1. A flame retardant B1 cable special traction device, characterized in that: include: A U-shaped frame (1), wherein four traction wheels (2) are rotatably mounted in a rectangular array on the inner wall of the U-shaped frame (1), and the same R-groove belt (3) is connected between every two lateral traction wheels (2); A driving assembly is arranged on the U-shaped frame (1) and is used to drive the traction wheel (2) to rotate, the driving assembly comprising an L-shaped frame (5) fixedly arranged on the outer wall of the U-shaped frame (1), and a driving motor (6) is fixedly arranged on the outer wall of the L-shaped frame (5); An adjustment component is arranged on the R-groove belt (3) and is used to adjust the distance between the two R-groove belts (3). The adjustment component comprises an adjustment plate (7) arranged in the R-groove belt (3). The adjustment plate (7) is arranged in a shape that matches the R-groove belt (3). The two adjustment plates (7) are arranged opposite to each other.

2. A flame-retardant B1 cable special traction device according to claim 1, characterized in that: The mounting rods of the two traction wheels (2) in the longitudinal direction both penetrate the outer wall of the U-shaped frame (1) and are fixedly provided with gears (4), the two gears (4) are meshed with each other, and the output shaft of the driving motor (6) penetrates the inner wall of the L-shaped frame (5) and is fixedly connected to the center of one of the gears (4).

3. A flame-retardant B1 cable special traction device according to claim 1, characterized in that: A plurality of rows of rollers (8) are fixedly mounted on the contact surface between the adjustment plate (7) and the inner wall of the R-groove belt (3).

4. A flame-retardant B1 cable special traction device according to claim 3, characterized in that: A pressure plate (9) is fixedly arranged on the other side of the adjustment plate (7), and the pressure plate (9) extends outside the R-groove belt (3). An electric push rod (10) is fixedly installed at the middle edge of the other side of the pressure plate (9), and the other end of the electric push rod (10) is fixedly connected to the inner wall of the U-shaped frame (1).

5. A flame-retardant B1 cable special traction device according to claim 4, characterized in that: Two telescopic sleeves (11) are fixedly arranged between the U-shaped frame (1) and the pressure plate (9), and the two telescopic sleeves (11) are symmetrically arranged with the electric push rod (10) as the center, and the maximum telescopic range of the telescopic sleeves (11) is compatible with the electric push rod (10).

6. A flame-retardant B1 cable special traction device according to claim 1, characterized in that: Both ends of the U-shaped frame (1) are fixedly provided with a rotation plate (12), and the top of the rotation plate (12) is rotatably provided with two guide rods (13).

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