Corner cable conveying device

Abstract

The invention provides a corner cable conveying device which comprises a horizontal cable conveying structure, a corner cable conveying structure and a vertical shaft cable conveying structure which are sequentially connected in the cable conveying direction, and the horizontal cable conveying structure and the vertical shaft cable conveying structure are both active conveying structures driven by power. The horizontal cable conveying structure comprises a conveying belt combination for clamping a cable on the left side and the right side; the corner cable conveying structure comprises a concave arc-shaped conveying track; the vertical shaft cable conveying structure comprises an inclined conveying belt; and a plurality of height-adjustable supporting legs are arranged below the arc-shaped conveying track and the inclined conveying belt. The device provides horizontal thrust and obliquely upward thrust at the same time, and is matched with a traction device arranged on the ground to smoothly move a cable from an underground horizontal tunnel into a cable shaft and then move the cable from the cable shaft to the ground, so that the conveying efficiency is high, and the device is convenient and labor-saving.

Description

Technical Field

[0001] This invention relates to the field of power cable construction, and more specifically to a corner cable conveying device. Background Technology

[0002] Cable laying is a crucial aspect of power grid construction, especially given the increasingly stringent urban construction standards, which have led to cables increasingly replacing overhead lines for power transmission. Cables are typically laid in underground cable tunnels and connected to surface-level equipment such as ring main units or junction boxes via cable shafts.

[0003] In cable laying construction, the following method is mainly used to drag the cable: First, the wire rope is passed through the path to be laid, and then the wire rope is connected to the front end of the cable. The wire rope is pulled along the prescribed path by a winch or other traction equipment, and the cable is moved forward by the wire rope.

[0004] As cables become longer and thicker, laying them from underground cable tunnels through cable shafts to the surface becomes increasingly difficult. While traction equipment like winches pull the cable from above ground, the cable must first travel horizontally parallel to the ground in the underground cable tunnel, then enter the cable shaft at a near 90-degree angle, and finally reach the surface at another near 90-degree angle. The direction of the traction force changes multiple times along the steel cable, requiring significant tension, which is labor-intensive, increases the risk of cable breakage, and makes it difficult to drag the cable. Summary of the Invention

[0005] To address the aforementioned problems, this invention proposes a corner cable conveying device. This device provides both horizontal thrust and upward oblique thrust. In conjunction with a traction device installed on the ground, it smoothly moves the cable from the underground horizontal tunnel to the cable shaft, and then from the cable shaft to the ground. This method offers high conveying efficiency and is convenient and labor-saving.

[0006] To achieve the above objectives, the technical solution provided by this invention is as follows: A corner cable conveying device includes a horizontal cable conveying structure, a corner cable conveying structure, and a vertical shaft cable conveying structure connected sequentially along the cable conveying direction. Both the horizontal cable conveying structure and the vertical shaft cable conveying structure are active conveying structures driven by a power source. The horizontal cable conveying structure includes a conveyor belt assembly that clamps the cable on both the left and right sides; The corner cable conveying structure includes a concave arc-shaped conveying track; The vertical shaft cable conveying structure includes an inclined conveyor belt; Multiple height-adjustable support legs are installed below both the arc-shaped conveyor track and the inclined conveyor belt.

[0007] Preferably, the horizontal cable conveying structure further includes a housing, and the conveyor belt assembly is slidably mounted above the housing.

[0008] Preferably, the conveyor belt assembly includes two sets of conveyor belts arranged symmetrically on the left and right sides, connected by an electric push rod, and the bottom of each set of conveyor belts is slidably connected to the box body.

[0009] Preferably, a lifting support platform for temporary cable support is provided in the area above the box and between the two sets of conveyor belts.

[0010] Preferably, hinge seats are provided below both the arc-shaped conveyor track and the inclined conveyor belt, and the upper end of the support leg is hinged to the hinge seat.

[0011] Preferably, the arc-shaped conveying track includes a support, a hinge seat is provided below the support, and multiple track units that are hinged end to end are provided above the support.

[0012] Preferably, the surface of the track unit is rotatably connected to a conveyor roller.

[0013] Preferably, baffles are provided on both sides of the arc-shaped conveyor track and on both sides of the inclined conveyor belt.

[0014] Preferably, multiple support legs are arranged sequentially along the cable conveying direction.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention utilizes a three-section interconnected structure of horizontal cable conveying structure, corner cable conveying structure and vertical shaft cable conveying structure to provide conveying guidance and auxiliary power for cable conveying. Combined with the ground traction device, it can more conveniently and efficiently guide the cable through the corner section.

[0016] 2. The arc-shaped conveyor track is a multi-section articulated track unit, which, together with the liftable support legs, can adapt to the turning angle of cables of different diameters, providing accurate guidance for cable conveying.

[0017] 3. The lifting support platform is used to provide temporary support for the cable before the left and right conveyor belts clamp the cable and when the two conveyor belts release the cable after the cable is transported to the ground, so as to facilitate subsequent operations.

[0018] 4. The height-adjustable support leg structure allows the arc-shaped conveyor track and inclined conveyor belt to be adjusted to a suitable position, basically matching the cable laying path.

[0019] 5. The conveyor rollers change the sliding friction between the cable and the arc-shaped conveyor track into rolling friction, which facilitates the cable's movement and saves driving force. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the overall structure of the present invention. Figure 2 ; Figure 3 for Figure 2 A magnified view of part A in the image; Figure 4 A diagram showing the state of the cable before it is clamped by the horizontal cable conveyor structure. Figure 5 for Figure 4 View A in the middle; Figure 6 This is a diagram showing the cable's transport state after it has been clamped by a horizontal cable transport structure. In the diagram, 1. Horizontal cable conveying structure, 1.1. Electric push rod, 1.2. Conveyor belt assembly, 1.3. Box body, 1.4. Lifting support platform; 2. Corner cable conveying structure, 2.1. Track unit, 2.2. Conveyor roller, 2.3. Baffle, 2.4. Hinge seat; 3. Vertical shaft cable conveying structure, 3.1. Inclined conveyor belt, 3.2. U-shaped frame, 4. Support leg, 5. Cable. Detailed Implementation

[0022] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0023] Common cable conveyors provide a forward thrust to the cable within a horizontal tunnel, similar to the horizontal cable conveying structure 1 in this invention. However, the thrust provided is horizontal and its effectiveness is limited when laying cables at sharp bends. This invention, on the other hand, is specifically designed for cables moving upwards from horizontal tunnels through cable shafts. Figure 1-6The device of the present invention provides horizontal thrust, as well as upward thrust and directional guidance, so as to cooperate with the traction device set on the ground to smoothly pull the cable from the underground horizontal tunnel into the cable shaft, and then pull it out from the cable shaft, so that the cable can be smoothly transported to the ground.

[0024] The device of the present invention includes a horizontal cable conveying structure 1, a corner cable conveying structure 2, and a vertical shaft cable conveying structure 3 connected in sequence. The horizontal cable conveying structure 1 is connected to the vertical shaft cable conveying structure 3 through the adjustable corner cable conveying structure 2. For convenient transportation and entry into the tunnel, the three structures can be designed independently and then connected together when needed. The connection parts can be connected by overlapping steel plates or by hinges.

[0025] The horizontal cable conveying structure 1 includes a base, with a housing 1.3 on top of the base. The housing 1.3 contains an external power socket, a motor, and other power components. A conveyor belt assembly 1.2 is installed on top of the housing 1.3. The conveyor belt assembly 1.2 consists of two sets of conveyor belts with adjustable spacing between them. Driven by the power structure within the housing, the conveyor belts rotate continuously, ensuring that the portion clamped to the cable 5 always moves in the same direction as the cable 5. The tops of one end of each of the two conveyor belt sets are connected to each other via an electric push rod 1.1. The lower parts of both conveyor belt sets are slidably connected to the housing 1.3 in the left-right direction. By extending or retracting the electric push rod 1.1, the two conveyor belts can cooperate to loosen or clamp the cable 5.

[0026] To facilitate cable clamping, before the two conveyor belts approach each other, the lifting support platform 1.4 located between the two conveyor belts rises above the housing 1.3. The cable 5 is first moved onto the lifting support platform 1.4 under the power drive of the ground cable conveyor. The width of the lifting support platform is smaller than the diameter of the cable. After the two conveyor belts clamp the cable, the lifting support platform 1.4 falls into the housing 1.3 without interfering with the cable conveying.

[0027] The corner cable conveyor structure 2 resembles the human spine, consisting of sections of track units 2.1 connected end-to-end with hinges. The number of track units 2.1 can be adjusted within a certain range according to requirements. Hinge seats are installed at suitable positions below the track, through which support legs 4 are hinged. These support legs 4 can be electric push rods or hydraulic lifting rods, aiming for rapid and precise height adjustment. By adjusting the height, the connection angle between each section of track unit 2.1 in the corner track can be adjusted, thereby affecting the curvature of the entire corner track. A certain number of conveyor rollers 2.2 are installed on the outer surface of the track unit 2.1 to assist in cable advancement. The vertical shaft cable conveyor structure 3 includes support legs 4, a housing 1.3, and an inclined conveyor belt 3.1, etc. A U-shaped frame 3.2 is installed on the outside of the inclined conveyor belt 3.1. The two legs of the U-shaped frame 3.2 are respectively hinged to the two sides of the inclined conveyor belt 3.1. The upper end of the support leg 4 is connected to the lower end of the U-shaped frame 3.2, which has the function of a jack and can adjust the height. The inclination angle of the inclined conveyor belt 3.1 can be adjusted by adjusting the height.

[0028] When it is necessary to pass the cable through the cable shaft, first adjust the electric push rod 1.1 above the box 1.3 of the horizontal cable conveying structure 1 to clamp the cable 5 between the two conveyor belts. Start the horizontal cable conveying structure 1 to make the two conveyor belts rotate. When the conveyor belts rotate, they exert a forward thrust on the clamped cable 5 under the action of friction, pushing the cable 5 forward. Based on the cable's forward movement, bending capacity, cable thickness, height of the horizontal cable tunnel, and height and width of the cable shaft, consider the expected path of the cable through the cable shaft, select an appropriate number of track units 2 to form a corner track, and adjust the height of the support legs 4 to adjust the curvature of the corner track to a suitable position, basically matching the cable laying path. Some baffles 2.3 are set on the left and right edges of the track and the inclined conveyor belt 3.1 to prevent the cable from slipping off the track from the side.

[0029] After passing through the corner track, the cable is transported to the vertical shaft cable transport structure 3. The inclined conveyor belt 3.1 of the vertical shaft cable transport structure 3 is connected to the corner track. The inclined conveyor belt 3.1 adjusts its inclination angle by adjusting the height of the supporting legs 4 below, thus facilitating the cable's passage through the vertical shaft to the ground. When the cable is transported to the vertical shaft cable transport structure 3, it is placed on the surface of the inclined conveyor belt 3.1. The inclined conveyor belt 3.1 performs a repetitive elliptical motion, with the plane of the inclined conveyor belt 3.1 supporting the cable and propelling it diagonally upwards, thus giving the cable an upward thrust and helping it pass diagonally through the cable shaft.

[0030] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A corner cable conveying device, characterized in that, It includes a horizontal cable conveying structure, a corner cable conveying structure, and a vertical shaft cable conveying structure connected sequentially along the cable conveying direction. Both the horizontal cable conveying structure and the vertical shaft cable conveying structure are active conveying structures driven by power. The horizontal cable conveying structure includes a conveyor belt assembly that clamps the cable on both the left and right sides; The corner cable conveying structure includes a concave arc-shaped conveying track; The vertical shaft cable conveying structure includes an inclined conveyor belt; Multiple height-adjustable support legs are installed below both the arc-shaped conveyor track and the inclined conveyor belt.

2. The corner cable conveying device according to claim 1, characterized in that, The horizontal cable conveying structure also includes a housing, and the conveyor belt assembly is slidably mounted above the housing.

3. A corner cable conveying device according to claim 2, characterized in that, The conveyor belt assembly includes two sets of conveyor belts arranged symmetrically on the left and right sides. The two sets of conveyor belts are connected by an electric push rod, and the bottom of each set of conveyor belts is slidably connected to the box body.

4. A corner cable conveying device according to claim 3, characterized in that, A lifting support platform is installed above the box, in the area between the two sets of conveyor belts, to temporarily support the cables.

5. A corner cable conveying device according to claim 1, characterized in that, Hinges are provided below the arc-shaped conveyor track and below the inclined conveyor belt, and the upper end of the support leg is hinged to the hinge.

6. A corner cable conveying device according to claim 1, characterized in that, The arc-shaped conveying track includes a support frame, a hinged seat is provided below the support frame, and multiple track units are provided above the support frame, which are hinged end to end.

7. A corner cable conveying device according to claim 6, characterized in that, The surface of the track unit is rotatably connected to a conveyor roller.

8. A corner cable conveying device according to claim 1, characterized in that, Baffles are provided on both sides of the arc-shaped conveyor track and on both sides of the inclined conveyor belt.

9. A corner cable conveying device according to claim 1, characterized in that, Multiple support legs are arranged sequentially along the cable conveying direction.

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