Pay-off reel for power cable

Abstract

The utility model discloses an electric power cable pay-off reel, which comprises a base and a side plate, the base is used for placing a cable coil to be unwound, the side plate is provided with a fixing mechanism and a pay-off mechanism, the fixing mechanism comprises a turntable, one side of the turntable is provided with a plurality of positioning pins, the positioning pins are used for supporting the cable coil, the turntable is internally provided with a sliding block and a threaded cylinder, and the sliding block and the threaded cylinder are arranged on the side plate. The sliding block and the threaded cylinder are used for adjusting and fixing the position of the positioning pin respectively, the pay-off mechanism comprises two concave wheels, a plurality of protrusions are arranged on the two concave wheels, and the concave wheels push and extrude a wire body through the protrusions. When a power cable is unwound, the positions of the three positioning pins can be respectively adjusted according to the diameter of the cable coil, so that the three positioning pins can form an inscribed equilateral triangle of the inner ring of the cable coil, the cable coil is fixed, the use of the cable coils with different sizes can be met, and the universality of the device can be stronger.

Description

Technical Field

[0001] The utility model relates to the technical field of cable unwinding, in particular to a pay-off drum for power cables. Background Art

[0002] Power cable is an electrical device used to transmit electric energy. It is composed of conductor, insulation layer, sheath, etc. Power cable is usually used to transmit low, medium and high voltage electric energy. It can be used in buildings, urban power grids, industrial manufacturing, transportation and other fields.

[0003] After production, power cables are generally wound into coils before being stored and transported. The purpose of winding is to protect the power cables and avoid damage or entanglement. Winding can also save space for storage and transportation. However, when winding, attention should be paid to factors such as the bending radius, tension control and reel size of the cable to ensure that the cable is not damaged during the winding process and can maintain good performance. Therefore, the different requirements of multiple factors determine that the reels can be large or small.

[0004] After searching, the Chinese utility model patent with publication number CN211971299U discloses a power cable rack that is convenient for wire laying, including a base, a movable mechanism is welded to the bottom of the base, a tool box is connected to the top outer wall of the base by bolts, a handrail is welded to the top outer wall of one side of the base, a handle is welded to the top outer wall of the handrail, a protective plate is welded to one end of the top of the base, a wire mechanism is rotatably connected to the outer wall of one side of the protective plate, a bottom plate is welded to the outer wall of one side of the base, a wire laying mechanism is fixed to the top outer wall of the bottom plate by bolts, and the movable mechanism includes pillars, four of which are welded to the bottom outer wall of the base, through holes are opened in the bottom inner walls of the pillars, and the through holes in the bottom inner walls of the pillars are rotatably connected to rollers via a rotating shaft. This application supports the coil of the power cable by means of a left winding pole and a right winding pole, and realizes winding and unwinding by driving the two winding poles to rotate through a motor. However, since the size of the coil of the power cable may vary due to different needs and requirements, the two winding poles of fixed size in the device have poor versatility and cannot meet the requirements of unwinding coils of different sizes. In addition, when the diameter of the coil is larger than the diameter of the above-mentioned winding pole, the rotation of the winding pole will not allow the coil to rotate accordingly, and therefore the unwinding effect cannot be achieved. Utility Model Content

[0005] In view of the above-mentioned prior art, the utility model provides a pay-off drum for power cables, and the main technical problem to be solved is how to meet the needs of the pay-off of power cable reels of different diameters.

[0006] To achieve the above purpose, the technical solution of the embodiment of the utility model is implemented as follows:

[0007] A wire reel for power cables comprises a base and side plates, wherein the base is used to place a wire coil to be unwound, the side plates are provided with a fixing mechanism and a wire-releasing mechanism, the fixing mechanism comprises a turntable, a plurality of positioning pins are provided on one side of the turntable, the positioning pins are used to support the wire coil, a slider and a threaded barrel are provided inside the turntable, the slider and the threaded barrel are respectively used to adjust and fix the positions of the positioning pins, and the wire-releasing mechanism comprises two concave wheels, each of which is provided with a plurality of protrusions, and the concave wheels push the wire body through the protrusions.

[0008] Furthermore, the side panel is fixedly connected to one side of the top of the base, the turntable is rotatably connected to one side of the side panel, and three strip grooves are equidistantly provided inside the turntable, the three strip grooves are arranged in a triangular star shape, one side of the turntable is provided with strip openings at the three strip grooves, the width of the strip openings is smaller than the width of the strip grooves, and the turntable is provided with scale lines on one side of the three strip openings.

[0009] Furthermore, there are three sliders, which are slidably connected to the turntable at three strip grooves, respectively. The three threaded barrels are located at three strip openings, respectively, and the three threaded barrels are fixedly connected to the three sliders, and slits are provided on both sides of the threaded barrel. There are three positioning pins, which include a rod body and a threaded head. The threaded head is threadedly connected to the inner side of the threaded barrel, and the threaded head is truncated cone-shaped.

[0010] Furthermore, two circular through holes are provided at the top end of one side of the side plate away from the turntable, and the side plate is rotatably connected with a rotating rod and a rotating shaft at the two circular through holes, respectively. The two cams are respectively connected to one end of the rotating rod and the rotating shaft through keys, and the other end of the outer side of the rod body of the rotating rod and the rotating shaft is connected with gears through keys. The two gears are meshed, one end of the rotating rod is fixedly connected to a connecting plate, and a handle is rotatably connected to the bottom end of one side of the connecting plate.

[0011] Furthermore, a plurality of protrusions are fixedly connected in the depressions on the outer side of the cam wheel at equal distances, the material of the protrusions is rubber, and the protrusions are in the shape of cones with offset vertices, and the protrusions on the outer sides of the two cam wheels are mirror-symmetrical.

[0012] Furthermore, a positioning cylinder is fixedly connected to one side of the side plate between the turntable and the concave wheel, and the positioning cylinder is used for limiting and supporting the wire body.

[0013] Furthermore, a plurality of limiting plates are equidistantly and fixedly connected to the interior of the positioning cylinder. The limiting plates are in a circular ring shape and are made of latex.

[0014] The beneficial effects of the utility model are:

[0015] 1. When the device is used to unwind the power cable, the positions of the three positioning pins can be adjusted according to the diameter of the wire coil, so that the three can form an equilateral triangle inscribed in the inner ring of the wire coil, thereby fixing the wire coil. In this way, the use of wire coils of different sizes can be satisfied, making the versatility of the device stronger; in addition, when unwinding, the stability of the unwinding process can be ensured by the opposite rotation of the two concave wheels and the squeezing of the wire body by the protrusions. In the unwinding process, the displacement of the power cable can be calculated by the circumference and rotation angle of the concave wheels, so as to accurately control its unwinding length.

[0016] 2. The device is in the shape of a trolley, so it is more convenient to use. It can also be used to transport and temporarily store the power cables to be unwound, and unwound them after pushing them to the designated location. In the process of unwinding, the brake is used to lock the universal wheel to ensure the stability of the device.

[0017] 3. By setting a limit plate made of latex in the positioning cylinder, when the power cable passes through the positioning cylinder, the positioning cylinder can lift the wire body, thereby preventing the power cable from falling off from between the two concave wheels due to its own weight. At the same time, the limit plate can also provide a certain friction force for the movement of the wire body, so that the wire body can remain straight during the unwinding process, thereby further ensuring stable unwinding. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a front view of a pay-off drum for a power cable in Example 1 of the present application;

[0019] Figure 2 It is a cross-sectional perspective view of a turntable of a pay-off reel for power cables in Example 1 of the present application;

[0020] Figure 3 A three-dimensional diagram of a slider of a pay-off drum of a power cable in Example 1 of the present application;

[0021] Figure 4 It is a side view of a concave wheel of a pay-off drum of a power cable in Example 1 of the present application;

[0022] Figure 5 It is a front cross-sectional view of a concave wheel of a pay-off drum of a power cable in Example 1 of the present application;

[0023] Figure 6 This is a cross-sectional stereoscopic view of a positioning cylinder of a pay-off drum of a power cable in Example 2 of the present application.

[0024] Description of Figure Numbers:

[0025] Base 1, side panel 2, positioning pin 3, rod body 301, threaded head 302, turntable 4, strip groove 401, strip opening 402, positioning cylinder 5, limit plate 501, concave wheel 6, protrusion 601, slider 7, threaded cylinder 8, slit 801, gear 9, rotating rod 10, connecting plate 11, rotating shaft 12, handle 13. DETAILED DESCRIPTION

[0026] The technical solution of the utility model is further elaborated in detail below in conjunction with the drawings and specific embodiments of the specification. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by technicians in the technical field of the utility model. The terms used herein in the specification of the utility model are only for the purpose of describing specific embodiments and are not intended to limit the utility model. In the following description, the expression "some embodiments" is involved, which describes a subset of all possible embodiments, but it should be understood that "some embodiments" can be the same subset or different subsets of all possible embodiments, and can be combined with each other without conflict.

[0027] It should also be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "inside", "outside", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0028] Example 1

[0029] See attached Figure 1-5The present application provides a wire reel for power cables, comprising a base 1 and a side plate 2. The base 1 is used to place the wire reels to be unwound. When a plurality of wire reels need to be unwound, the wire reels to be unwound can be placed on the base 1 and can be transported. The side plate 2 is provided with a fixing mechanism and a wire-unwinding mechanism. The fixing mechanism comprises a turntable 4. A plurality of positioning pins 3 are provided on one side of the turntable 4. The positioning pins 3 are used to support the wire reels. The three positioning pins 3 can form an inscribed equilateral triangle on the inner side of the wire reels to provide support for the wire reels. A slider 7 and a threaded barrel 8 are provided inside the turntable 4. The slider 7 and the threaded barrel 8 are respectively used to adjust and fix the position of the positioning pin 3. The movement of the positioning pin 3 can drive the slider 7 to move in the strip groove 401, so the two can guide the movement of the positioning pin 3. The wire-releasing mechanism includes two concave wheels 6. The depressions on the two concave wheels 6 can limit the wire body of the power cable to prevent the wire body from shifting during the wire-releasing process. A number of protrusions 601 are provided on the two concave wheels 6. The concave wheels 6 push the wire body through the protrusions 601. Therefore, the rotation of the concave wheels 6 can allow the protrusions 601 to push the wire body to achieve wire-releasing.

[0030] Preferably, the side plate 2 is fixedly connected to one side of the top of the base 1. The unilateral setting of the side plate 2 allows the wire coil to be located in the middle of the top of the base 1 after being sleeved on the positioning pin 3, thereby ensuring that the center of gravity of the entire device is stable and does not deviate. The turntable 4 is rotatably connected to one side of the side plate 2, and three strip grooves 401 are equidistantly opened inside the turntable 4. The three strip grooves 401 are arranged in a triangular star shape, that is, the three strip grooves 401 are arranged in a state of converging at one end and forming an angle of 120 degrees with each other. One side of the turntable 4 is in the three strip grooves 40 1 is provided with a strip opening 402, and the width of the strip opening 402 is smaller than the width of the strip groove 401, so it can ensure that the slider 7 will not fall off when sliding in the strip groove 401, and the turntable 4 is provided with scale lines on one side of the three strip openings 402. Referring to the scale lines, moving the three positioning pins 3 separately can make it more convenient to adjust the three to form an equilateral triangle. In this case, the wire coil and the turntable 4 can be on the same axis, so when the free end of the wire coil is pulled to make it rotate, there will be no excessive centrifugal force to cause the wire coil to loosen. There are three sliders 7, which are slidably connected to the turntable 4 at three strip grooves 401, and the three threaded barrels 8 are respectively located at three strip openings 402, and the three threaded barrels 8 are respectively fixedly connected to the three sliders 7. Slits 801 are provided on both sides of the threaded barrel 8, and the slits 801 can divide the threaded barrel 8 into two semi-cylindrical barrels. When the truncated cone-shaped threaded head 302 is threadedly connected to the threaded barrel 8 and rotated to extend into the threaded barrel 8, the threaded barrel 8 will deform, that is, its two semi-cylindrical barrels will expand outward at the same time until their outer walls contact the turntable 4 at the strip openings 402, and the threaded barrel 8 and the turntable 4 can no longer move relative to each other, so the position of the locating pin 3 can be fixed. There are three locating pins 3, which include a rod body 301 and a threaded head 302. The threaded head 302 is threadedly connected to the inner side of the threaded barrel 8, and the threaded head 302 is truncated cone-shaped.

[0031] Preferably, two circular through holes are provided at the top end of the side plate 2 away from the turntable 4, and the side plate 2 is rotatably connected with a rotating rod 10 and a rotating shaft 12 at the two circular through holes, respectively. The two cams 6 are respectively connected to one end of the rotating rod 10 and the rotating shaft 12 by keys, and the two cams 6 and the turntable 4 are on the same side of the side plate 2, and the other end of the outer side of the rod body of the rotating rod 10 and the rotating shaft 12 is connected with a gear 9 by a key. The two gears 9 are meshed, so when the rotating rod 10 rotates, the rotating shaft 12 can be driven to rotate synchronously and in the opposite direction through the meshing of the two gears 9. One end of the rotating rod 10 is fixedly connected to a connecting plate 11, and the bottom end of one side of the connecting plate 11 is rotatably connected to a handle 13. The connecting plate 11 and the handle 13 can form a crank, which can be used to drive the cam 6 more labor-saving.

[0032] Preferably, several protrusions 601 are equidistantly fixed in the depressions on the outside of the cam 6. The material of the protrusions 601 is rubber, and the protrusions 601 are in the shape of a cone with an offset apex. The protrusions 601 of this shape can have a larger contact area when in contact with the wire body, and thus will produce a greater friction force on the wire body, thereby ensuring stability when the wire body is pushed to release the line. The protrusions 601 on the outside of the two cams 6 are mirror-symmetrical. The two protrusions 601 squeeze the wire body, which can further enhance the friction force applied by the protrusions 601 on the surface of the wire body, thereby making the release of the line more stable.

[0033] Preferably, a positioning cylinder 5 is fixedly connected to one side of the side plate 2 between the turntable 4 and the cam 6. The positioning cylinder 5 is used to limit and support the wire body, which can prevent the power cable from falling off between the two cam wheels 6 due to its own gravity.

[0034] Working principle: When using the device to unwind the power cable, the relative positions of the three positioning pins 3 can be adjusted according to the diameter of the wire coil. In this process, the positioning pins 3 can be moved to make the slider 7 move in the strip groove 401. After the position of the positioning pin 3 is selected, the positioning pin 3 is twisted to rotate. At this time, the rod body 301 can drive the thread head 302 to rotate deep into the thread barrel 8. As the truncated cone-shaped thread head 302 goes deeper, the two barrels of the thread barrel 8 will be stretched open, so the two barrels will squeeze the turntable 4 at both sides of the strip opening 402 respectively. In this case, the relative fixation of the thread barrel 8 and the turntable 4 can be achieved, so the positioning pin 3 can also be fixed;

[0035] The three positioning pins 3 can be adjusted respectively in the above manner so that the three can form an inscribed equilateral triangle on the inner side of the wire coil, and then the wire coil can be sleeved on the outside of the three positioning pins 3 to fix the wire coil. After that, the outer free end of the wire coil can be pulled and placed between the two concave wheels 6 after passing through the positioning cylinder 5. Then, the handle 13 is shaken, and the handle 13 drives the rotating rod 10 to rotate through the connecting plate 11. Since the rotating rod 10 can drive the rotating shaft 12 to rotate through the two gears 9, the two concave wheels 6 can rotate in opposite directions at the same time. The rotation of the concave wheel 6 can use the protrusion 601 to squeeze and push the wire body of the power cable, so as to achieve the effect of unwinding the power cable.

[0036] Since the arc length of the rotation of the concave wheel 6 can be calculated through the circumference and the rotation angle, and the arc length can represent the unwinding length of the power cable, the unwinding length can be accurately controlled.

[0037] Example 2

[0038] Refer to the attached Figure 6The present application provides a pay-off reel for power cables. Compared with Example 1, in order to ensure stable unwinding, a plurality of limit plates 501 are fixedly connected to the inside of the positioning cylinder 5 at equal intervals. The limit plates 501 are in a circular ring shape, and the material of the limit plates 501 is latex. After the wire body passes through the positioning cylinder 5, the limit plates 501 can be wrapped around the outside of the wire body to provide it with friction. Therefore, the wire body can be kept straight in the process of moving with the rotation of the concave wheel 6, so as to make the pay-off process more stable. Moreover, since the limit plate 501 is a latex thin sheet, the friction provided by it will not cause excessive hindrance to the movement of the wire body.

[0039] Working principle: After the wire body of the power cable passes through the positioning cylinder 5, the positioning cylinder 5 can support the wire body, and when the wire body moves in the positioning cylinder 5, the limiting plate 501 can provide a certain friction force for the wire body, so that the wire body can remain straight during the process of the concave wheel 6 squeezing and pushing the wire body, thereby ensuring the stability of the unwinding process.

[0040] The above are only specific implementations of the utility model, but the protection scope of the utility model is not limited thereto. 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. The protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A power cable pay-off drum, comprising a base (1) and a side plate (2), characterized in that: The base (1) is used to place the wire coil to be unwound, and the side plate (2) is provided with a fixing mechanism and a wire-releasing mechanism, the fixing mechanism comprises a turntable (4), one side of the turntable (4) is provided with a plurality of positioning pins (3), the positioning pins (3) are used to support the wire coil, the inside of the turntable (4) is provided with a slider (7) and a threaded cylinder (8), the slider (7) and the threaded cylinder (8) are respectively used to adjust and fix the position of the positioning pin (3), and the wire-releasing mechanism comprises two concave wheels (6), both of the two concave wheels (6) are provided with a plurality of protrusions (601), and the concave wheels (6) push the wire body through the protrusions (601).

2. A power cable pay-off drum according to claim 1, characterized in that: The side plate (2) is fixedly connected to one side of the top of the base (1); the turntable (4) is rotatably connected to one side of the side plate (2); three strip grooves (401) are equidistantly provided inside the turntable (4); the three strip grooves (401) are arranged in a triangular star shape; one side of the turntable (4) is provided with strip openings (402) at the three strip grooves (401); the width of the strip openings (402) is smaller than the width of the strip grooves (401); and the turntable (4) is provided with scale lines at one side of the three strip openings (402).

3. A pay-off drum for power cables according to claim 2, characterized in that: The number of the sliders (7) is three, and the three sliders (7) are slidably connected to the turntable (4) at three strip grooves (401), respectively. The three threaded barrels (8) are respectively located at three strip openings (402), and the three threaded barrels (8) are fixedly connected to the three sliders (7), and both sides of the threaded barrel (8) are provided with slits (801). The number of the positioning pins (3) is three, and the positioning pin (3) comprises a rod body (301) and a threaded head (302), and the threaded head (302) is threadedly connected to the inner side of the threaded barrel (8), and the threaded head (302) is truncated cone-shaped.

4. A pay-off drum for power cables according to claim 2, characterized in that: Two circular through holes are provided at the top end of one side of the side plate (2) away from the turntable (4), and the side plate (2) is rotatably connected to a rotating rod (10) and a rotating shaft (12) at the two circular through holes, respectively. The two cam wheels (6) are respectively connected to one end of the rotating rod (10) and the rotating shaft (12) through a key, and the other ends of the rotating rod (10) and the rotating shaft (12) are connected to a gear (9) through a key. The two gears (9) are meshed, and one end of the rotating rod (10) is fixedly connected to a connecting plate (11), and the bottom end of one side of the connecting plate (11) is rotatably connected to a handle (13).

5. The pay-off drum for power cables according to claim 1, characterized in that: A plurality of protrusions (601) are fixedly connected in the depressions on the outside of the cam (6) at equal distances. The material of the protrusions (601) is rubber, and the protrusions (601) are in the shape of a cone with an offset vertex. The protrusions (601) on the outside of the two cams (6) are mirror-symmetrical.

6. A power cable pay-off drum according to claim 4, characterized in that: A positioning cylinder (5) is fixedly connected to one side of the side plate (2) between the rotating disk (4) and the cam wheel (6), and the positioning cylinder (5) is used for limiting and supporting the wire body.

7. A pay-off drum for power cables according to claim 6, characterized in that: A plurality of limiting plates (501) are fixedly connected at equal intervals inside the positioning cylinder (5); the limiting plates (501) are in a circular ring shape and are made of latex.

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