Stable unwinding device for cable laying

Abstract

The utility model discloses a stable unwinding device for cable laying, and relates to the technical field of unwinding devices. The device comprises a flat car, two supporting plates are arranged on the upper side of the flat car, an unwinding drum is rotatably matched between the two supporting plates, a fixing mechanism corresponding to the unwinding drum is arranged on the upper side of the flat car, and a fixing plate is placed on the upper side of the flat car. A cable is inserted into the round hole, the bottom end of the limiting plate is pushed to rotate and incline, and then the cable penetrates through the round hole in the fixing plate, so that the cable is conveniently limited by the limiting plate to only move in the direction away from the unwinding drum, and the situation that the cable falls due to the gravity after being cut off is reduced; when the cable is cut, the driving mechanism drives the cutting blade to move downwards, the cutting blade drives the pressing plate to move downwards, after the pressing plate is attached to the cable, the cutting blade continues to move downwards, and then the pressing plate elastically positions the cable and then cuts the cable.

Description

Technical Field

[0001] This utility model belongs to the field of unwinding devices, specifically, it relates to a stable unwinding device for cable laying. Background Technology

[0002] When laying communication cables, cable-laying vehicles are generally used to release the cables in order to reduce the workload of workers.

[0003] Chinese Patent No. CN112607500A discloses a stable unwinding device for cable laying. When laying stops, a cylinder drives a moving plate upward, which in turn drives a pressing plate upward. This pressing plate presses the winding drum firmly, preventing the cable on the winding drum from loosening and preventing cable slippage. When the cable needs to be cut, turning the handle drives the worm gear to rotate, which in turn drives the worm wheel to rotate. The worm wheel then drives the threaded rod to rotate, which in turn drives the threaded sleeve to move upward. The threaded sleeve then drives the cutting blade to move upward, making it easier to cut the cable inside the cable entry point. This device is convenient for users.

[0004] However, in the aforementioned cable laying stable unwinding device, after the cable is cut, the cable between the winding drum and the fixing plate falls due to its own weight, causing the cut end of the cable to slide out of the round hole on the fixing plate. This means that when unwinding again, workers need to pick up the slipped cable end and insert it into the round hole on the fixing plate, which increases the workload of workers and reduces unwinding efficiency.

[0005] In view of this, this utility model is proposed. Utility Model Content

[0006] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a stable unwinding device for cable laying.

[0007] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by this utility model is as follows:

[0008] A stable unwinding device for cable laying includes a flatbed trolley. Two support plates are provided on the upper side of the flatbed trolley, and an unwinding drum is rotatably engaged between the two support plates. A fixing mechanism corresponding to the unwinding drum is provided on the upper side of the flatbed trolley. A fixing plate is placed on the upper side of the flatbed trolley, and a circular hole is provided on one side of the fixing plate. An installation groove is provided on the upper side of the fixing plate. A limit plate is rotatably engaged with the inner wall of the installation groove near the unwinding drum. An arc-shaped notch is provided at the bottom end of the limit plate. The installation groove communicates with the circular hole. A cutting blade is slidably engaged in the installation groove. A driving mechanism for driving the cutting blade to slide is provided in the installation groove. A pressure plate is elastically slidably engaged with the cutting blade near the unwinding drum.

[0009] Optionally, the fixing mechanism includes an arc-shaped plate that slides vertically on the upper side of the flatbed and multiple electric push rods located on the upper side of the flatbed for driving the arc-shaped plate to slide.

[0010] Optionally, the drive mechanism includes a top plate disposed in the mounting groove, a threaded rod that is rotatably engaged with the upper side of the cutting blade and threadedly engaged with the top plate, and a handwheel disposed on the upper side of the threaded rod.

[0011] Optionally, a bearing is embedded on the upper side of the cutting blade, and a smooth curved surface is provided on the outer side of the bottom end of the threaded rod, with the bottom end of the threaded rod fixed in the bearing.

[0012] Optionally, a protrusion is provided on one side of the cutting blade, and multiple spring dampers are provided between the bottom surface of the protrusion and the upper surface of the pressure plate.

[0013] Optionally, the bottom surface of the pressure plate is provided with a first arc-shaped notch, the bottom surface of the inner wall of the mounting groove is provided with a pad, and the upper side of the pad is provided with a second arc-shaped notch.

[0014] Optionally, the flatbed is equipped with a U-shaped guide strip on the upper side, and two guide wheels are rotatably fitted inside the U-shaped guide strip. The diameter of the guide wheels gradually decreases from both ends to the middle.

[0015] By adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art. Of course, any product implementing the present invention does not necessarily need to achieve all of the following advantages at the same time:

[0016] By inserting the cable into the round hole, the bottom end of the limiting plate is pushed to rotate and tilt, and then the cable passes through the round hole on the fixed plate. This allows the limiting plate to restrict the cable to move only away from the unwinding drum, reducing the probability that the cable will fall due to its own weight after being cut, causing the cut end to slide out of the round hole on the fixed plate. When cutting the cable, the drive mechanism moves the cutting blade downward, which in turn moves the pressure plate downward. When the pressure plate is in contact with the cable, the cutting blade continues to move downward, thereby allowing the pressure plate to elastically position the cable before cutting it. This reduces the probability that the cutting blade will squeeze the cut end of the cable and move it closer to the unwinding drum, causing the limiting plate to jam the cable.

[0017] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0018] The accompanying drawings described below are merely some embodiments. Those skilled in the art can obtain other drawings based on these drawings without any creative effort. In the drawings:

[0019] Figure 1 This is a three-dimensional structural diagram of an embodiment of the present utility model;

[0020] Figure 2This is a cross-sectional structural diagram of an embodiment of the present invention;

[0021] Figure 3 This is a schematic diagram of a support plate structure according to an embodiment of the present invention;

[0022] The attached diagram lists the components represented by each number as follows:

[0023] Flatbed trolley 1, support plate 2, unwinding drum 3, fixing mechanism 4, arc plate 401, electric push rod 402, fixing plate 5, round hole 6, mounting groove 7, limit plate 701, arc notch 702, cutting blade 8, protrusion 801, spring damper 802, drive mechanism 9, top plate 901, threaded rod 902, handwheel 903, pressure plate 10, first arc notch 11, pad strip 12, second arc notch 13, U-shaped guide strip 14, guide wheel 15.

[0024] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the present invention in any way, but rather to illustrate the concept of the present invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0025] The present invention will now be described in further detail with reference to the accompanying drawings.

[0026] Please see Figure 1-3 As shown, this embodiment provides a stable unwinding device for cable laying, including a flatbed trolley 1. Two support plates 2 are provided on the upper side of the flatbed trolley 1, and an unwinding drum 3 is rotatably fitted between the two support plates 2. A fixing mechanism 4 corresponding to the unwinding drum 3 is provided on the upper side of the flatbed trolley 1. A fixing plate 5 is placed on the upper side of the flatbed trolley 1. A circular hole 6 is provided on one side of the fixing plate 5. An installation groove 7 is provided on the upper side of the fixing plate 5. A limiting plate 701 is rotatably fitted on the inner wall of the installation groove 7 near the unwinding drum 3. A hinge is provided between the limiting plate 701 and the inner wall of the installation groove 7. The bottom of 701 is provided with an arc-shaped notch 702. The initial height of the top of the inner wall of the arc-shaped notch 702 is less than the height of the top of the inner wall of the circular hole 6. The mounting groove 7 is connected to the circular hole 6. A cutting blade 8 is slidably fitted in the mounting groove 7. The vertical section of the cutting blade 8 is a right-angled trapezoidal structure. The cutting surface of the cutting blade 8 is located on the side away from the unwinding drum 3, which reduces the probability of the extruded cable moving towards the unwinding drum 3 during cutting. A drive mechanism 9 for driving the cutting blade 8 to slide is provided in the mounting groove 7. A pressure plate 10 is elastically slidably fitted on the side of the cutting blade 8 near the unwinding drum 3.

[0027] By inserting the cable into the circular hole 6, the bottom end of the limiting plate 701 is pushed to rotate and tilt, and then the cable passes through the circular hole 6 on the fixed plate 5. This allows the limiting plate 701 to restrict the cable to move only away from the unwinding drum 3, reducing the probability that the cable will fall due to its own weight after being cut, causing the cut end to slip out of the circular hole 6 on the fixed plate 5. The arc-shaped notch 702 increases the contact area between the limiting plate 701 and the cable, increasing the stability of the limiting plate 701 in limiting the cable. When the cable is cut, the drive mechanism 9... The cutting blade 8 moves downward, which in turn moves the pressure plate 10 downward. When the pressure plate 10 comes into contact with the cable, the cutting blade 8 continues to move downward, which in turn causes the pressure plate 10 to elastically position the cable and then cut the cable. This reduces the probability that the cutting blade 8 will squeeze the cable and move closer to the unwinding drum 3, causing the limiting plate 701 to clamp the cable. After unwinding is completed, the unwinding drum 3 is fixed by the fixing mechanism 4, which helps to reduce the probability that the cable on the unwinding drum 3 will become loose when the device moves, and improves the stability of the unwinding drum 3 when the device moves.

[0028] Please see Figure 2-3 As shown, the fixing mechanism 4 in this embodiment includes an arc-shaped plate 401 that slides vertically on the upper side of the flatbed 1, and a plurality of electric push rods 402 disposed on the upper side of the flatbed 1 for driving the arc-shaped plate 401 to slide. This facilitates the use of electric push rods 402 to drive the arc-shaped plate 401 to slide and fix the unwound drum 3 after unwinding, thereby reducing the probability of the unwound drum 3 rolling and causing the cable on the unwound drum 3 to become loose when the device moves, and improving the stability of the unwound drum 3 when the device moves.

[0029] Please see Figure 2-3 As shown in Embodiment 1, the drive mechanism 9 includes a top plate 901 disposed in the mounting groove 7, a threaded rod 902 rotatably engaged with the upper side of the cutting blade 8 and threadedly engaged with the top plate 901, and a handwheel 903 disposed on the upper side of the threaded rod 902. A bearing is embedded on the upper side of the cutting blade 8. The outer side of the bottom end of the threaded rod 902 is provided with a smooth curved surface. The bottom end of the threaded rod 902 is fixed in the bearing, which facilitates the improvement of the rotation stability of the threaded rod 902 through the bearing, and facilitates the sliding of the cutting blade 8 by driving the threaded rod 902 to engage with the top plate 901 through the handwheel 903.

[0030] In Example 2, the drive mechanism 9 is an electric cylinder, which facilitates the sliding of the cutting blade 8 by driving it through the electric cylinder, thereby reducing the workload of workers.

[0031] Please see Figure 1-2 As shown, the cutting blade 8 in this embodiment has a protrusion 801 on one side. A plurality of spring dampers 802 are provided between the bottom surface of the protrusion 801 and the upper side of the pressure plate 10, so that the protrusion 801 can squeeze the spring dampers 802 to compress, and the pressure plate 10 can elastically position the cable.

[0032] Please see Figure 2 As shown, the bottom surface of the pressure plate 10 in this embodiment is provided with a first arc-shaped notch 11, which facilitates increasing the contact area between the pressure plate 10 and the cable and improving the stability of the pressure plate 10 in positioning the cable. The bottom surface of the inner wall of the mounting groove 7 is provided with a pad strip 12, and the upper side of the pad strip 12 is provided with a second arc-shaped notch 13, which facilitates reducing the cable positioning between the pressure plate 10 and the pad strip 12 and further improving the stability of the cable positioning.

[0033] Please see Figure 1-2 As shown, the flatbed trolley 1 in this embodiment is provided with a U-shaped guide bar 14 on the upper side. Two guide wheels 15 are rotatably fitted inside the U-shaped guide bar 14. The diameter of the guide wheels 15 gradually decreases from both ends to the middle, so that the cable can pass between the two guide wheels 15 and be guided by the two guide wheels 15 for cable transportation.

[0034] Working principle: The cable is inserted into the round hole 6, pushing the bottom end of the limiting plate 701 to rotate and tilt, then passing through the round hole 6 on the fixed plate 5, and then passing between the two guide wheels 15. This allows the limiting plate 701 to restrict the cable to move only away from the unwinding drum 3, reducing the probability that the cable will fall due to its own weight after being cut, causing the cut end of the cable to slip out of the round hole 6 on the fixed plate 5. When cutting the cable, the handwheel 903 is manually turned to rotate the threaded rod 902, which in turn moves the cutting blade 8 downward, and the cutting blade 8 moves the pressure plate. As the pressure plate 10 moves downward, after it comes into contact with the cable, the cutting blade 8 continues to move downward, which will squeeze the spring damper 802. This will cause the pressure plate 10 to elastically position the cable and then cut it, reducing the probability that the cutting blade 8 will squeeze the cable and move closer to the unwinding drum 3, causing the limiting plate 701 to clamp the cable. After unwinding is completed, the electric push rod 402 drives the arc plate 401 to slide and fix the unwinding drum 3 after unwinding. This will help reduce the probability that the unwinding drum 3 will roll and cause the cable on the unwinding drum 3 to become loose when the device moves, and improve the stability of the unwinding drum 3 when the device moves.

[0035] The contents not described in detail in this specification are existing technologies known to those skilled in the art. All electrical appliances in this utility model are powered by an external power source or a built-in battery. No restrictions are placed on the model or specific type of any electrical appliance in this utility model. Those skilled in the art can clearly identify the applicable electrical appliance model, specific type, and power supply method based on common knowledge in the field.

[0036] This utility model is not limited to the above-described embodiments. Anyone should know that structural changes made under the guidance of this utility model, and any technical solutions that are the same as or similar to this utility model, fall within the protection scope of this utility model. Technical aspects, shapes, and structures not described in detail in this utility model are all publicly known technologies.

Claims

1. A stable unwinding device for cable laying, characterized in that, include: Flatbed cart (1), with two support plates (2) on the upper side of the flatbed cart (1), and a unwinding drum (3) rotatably connected between the two support plates (2). A fixing mechanism (4) corresponding to the unwinding drum (3) is provided on the upper side of the flatbed cart (1). A fixing plate (5) is placed on the upper side of the flatbed cart (1). A round hole (6) is provided on one side of the fixing plate (5). An installation groove (7) is provided on the upper side of the fixing plate (5). A limiting plate (701) is rotatably connected to the inner wall of the installation groove (7) near the unwinding drum (3). An arc-shaped notch (702) is provided at the bottom end of the limiting plate (701). The installation groove (7) is connected to the round hole (6). A cutting blade (8) is slidably connected in the installation groove (7). A driving mechanism (9) for driving the cutting blade (8) to slide is provided in the installation groove (7). A pressure plate (10) is elastically slidably connected to the cutting blade (8) near the unwinding drum (3).

2. The cable laying stable unwinding device according to claim 1, characterized in that, The fixing mechanism (4) includes an arc plate (401) that slides vertically on the upper side of the flatbed (1) and multiple electric push rods (402) located on the upper side of the flatbed (1) for driving the arc plate (401) to slide.

3. The cable laying stable unwinding device according to claim 1, characterized in that, The drive mechanism (9) includes a top plate (901) located in the mounting groove (7), a threaded rod (902) that is rotatably engaged with the upper side of the cutting blade (8) and threadedly engaged with the top plate (901), and a handwheel (903) located on the upper side of the threaded rod (902).

4. The cable laying stable unwinding device according to claim 3, characterized in that, The upper side of the cutting blade (8) is embedded with a bearing, and the outer side of the bottom end of the threaded rod (902) is provided with a smooth curved surface. The bottom end of the threaded rod (902) is fixed in the bearing.

5. A stable unwinding device for cable laying according to claim 1, characterized in that, The cutting blade (8) has a protrusion (801) on one side, and multiple spring dampers (802) are provided between the bottom surface of the protrusion (801) and the upper side of the pressure plate (10).

6. The cable laying stable unwinding device according to claim 1, characterized in that, The bottom surface of the pressure plate (10) is provided with a first arc-shaped notch (11).

7. A stable unwinding device for cable laying according to claim 1, characterized in that, The bottom surface of the inner wall of the mounting groove (7) is provided with a pad (12), and the upper side of the pad (12) is provided with a second arc-shaped notch (13).

8. A stable unwinding device for cable laying according to claim 1, characterized in that, The flatbed (1) is provided with a U-shaped guide strip (14) on the upper side. Two guide wheels (15) are rotatably fitted inside the U-shaped guide strip (14). The diameter of the guide wheels (15) gradually decreases from both ends to the middle.

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