Scraper conveyor tail cable protection device

Abstract

The utility model relates to the technical field of scraper conveyors, in particular to a tail cable protection device of a scraper conveyor. Comprising a fixing frame fixed to the end of a machine tail in the length direction of a mining face, a workbench is arranged on the top of the fixing frame, an L-shaped wiring box with two open ends is arranged on the workbench, the wire outlet end of the wiring box is opposite to a cable trough of the scraper, and the wire inlet end of the cable box is opposite to a dry type transformer in a roadway. The angle between the wire inlet end and the wire outlet end of the wiring box can be adjusted along with the change of the tail position. The top of a cable is protected through the cabling box, the cable is prevented from being damaged by a falling object, cable loosening caused by vibration during working of the coal mining machine is also prevented, and the situation that the service life is affected due to friction between the cable and the end of the cabling box is prevented by adjusting the angles of the wire inlet end and the wire outlet end of the cabling box.

Description

Technical Field

[0001] The utility model relates to the technical field of scraper conveyors, in particular to a tail cable protection device for a scraper conveyor. Background Art

[0002] Scraper conveyor is a conveyor that uses scraper chains to transport bulk materials in a trough. The function of scraper conveyor is not only to transport coal and materials, but also to serve as the running track of coal mining machines. Therefore, it has become an indispensable main equipment in modern coal mining technology. In coal mining, the mining face refers to the first production site of coal. The tunnel is a variety of passages drilled between the surface and the ore body, which are used for transporting ore, ventilation, drainage, pedestrians, and various necessary preparations for the new excavation of ore for metallurgical equipment. The mining face and the tunnel are in a vertical position in the same horizontal plane. The dry-type transformer is located in the tunnel, the scraper conveyor body is located in the mining face, and the tail of the scraper conveyor is located at the corner of the mining face and the tunnel. Figure 1 As shown, the cable extends from the dry-type transformer to the cable trough of the scraper conveyor. Not only is there a risk of the cable being damaged near the mining face, but the traditional method uses a cable hook to fix the cable to the hydraulic support at the end of the tail of the machine. However, the coal mining machine will vibrate when working at the tail of the machine, which may loosen the cable hook and cause the cable to rebound and fall, contact the coal mining machine drum, and cause breakage, and potential injury. In addition, as the length of the mining face changes, the position of the tail of the machine is not fixed along the length of the mining face, while the position of the dry-type transformer in the tunnel is fixed, so the cable cannot always maintain a fixed angle at the corners of the mining face and the tunnel. Utility Model Content

[0003] The utility model aims to solve the above problems, thereby providing a scraper conveyor tail cable protection device which can ensure the service life of the cable.

[0004] The utility model solves the above problems and adopts the following technical solutions:

[0005] A cable protection device at the tail of a scraper conveyor comprises a fixing frame fixed at the tail end along the length direction of the mining surface, a workbench is arranged on the top of the fixing frame, an L-shaped wiring box with openings at both ends is arranged on the workbench, an outlet end of the wiring box is opposite to a cable trough of the scraper conveyor, an inlet end of the cable box is opposite to a dry-type transformer in the lane, and the angle between the inlet end and the outlet end of the wiring box can be adjusted according to the change of the position of the tail.

[0006] Compared with the prior art, the utility model adopting the above technical solution has the following outstanding features:

[0007] The top of the cable is protected by a wiring box to prevent it from being hit by falling objects and to prevent the cable from loosening due to vibration caused by the operation of the coal mining machine. By adjusting the angles of the incoming and outgoing ends of the wiring box, friction between the cable and the end of the wiring box is prevented, which may affect the service life.

[0008] As a preferred embodiment, a further technical solution of the utility model is:

[0009] Furthermore, first jacks are respectively fixed to both sides of the fixed frame along the width direction of the mining surface, and the tops of the jacks are fixed to the bottom surface of the workbench.

[0010] Furthermore, the wiring box includes a first wiring box and a second wiring box located above the workbench, the first wiring box is fixed to the top surface of the workbench and is L-shaped when viewed from above, the second wiring box is located on one side of the first wiring box and is rectangular when viewed from above, the first wiring box and the second wiring box are opened at both ends respectively, the top surface and the bottom surface of the opening of the first wiring box close to the second wiring box side respectively have a first semicircular plate extending horizontally outward, the top surface and the bottom surface of the opening of the second wiring box close to the first wiring box side respectively have a second semicircular plate extending horizontally outward, the second semicircular plate slidably fits on the inner side surface of the first semicircular plate, the middle parts of the first and second semicircular plates and the workbench are rotatably connected with a positioning shaft, a second jack is hinged on the workbench and on one side of the first wiring box along the length direction of the lane, an arc-shaped connecting ear is provided on one side of the second wiring box, the end of the second jack is rotatably connected to the connecting ear, and the second jack drives the second wiring box to rotate around the positioning axis.

[0011] Furthermore, the corners at the inner arc and the back arc of the first wire box are both rounded. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the structure of a dry-type transformer and a scraper conveyor in a laneway according to an embodiment of the utility model;

[0013] Figure 2 This is a schematic diagram of the main structure of an embodiment of the utility model;

[0014] Figure 3 This is a schematic diagram of the top view of the structure of an embodiment of the utility model;

[0015] Marked in the figure are: fixed frame 1, workbench 2, first jack 3, first wire box 4, second wire box 5, first semicircular plate 6, second semicircular plate 7, second jack 8, connecting ear 9, mining face 10, tunnel 11, dry transformer 12, scraper conveyor 13. DETAILED DESCRIPTION

[0016] The present invention is further described below in conjunction with embodiments, the purpose of which is only to provide a better understanding of the content of the present invention. Therefore, the examples given do not limit the protection scope of the present invention.

[0017] A cable protection device at the tail of a scraper conveyor comprises a fixing frame fixed at the tail end along the length direction of the mining surface, the fixing frame being fixed to the tail by bolts, a workbench being arranged on the top of the fixing frame, an L-shaped wiring box with openings at both ends being arranged on the workbench, an outlet end of the wiring box being opposite to a cable trough of the scraper conveyor, an inlet end of the cable box being opposite to a dry-type transformer in the lane, and an angle between the inlet end and the outlet end of the wiring box being adjustable according to a change in the position of the tail.

[0018] Furthermore, the first jacks are fixed on both sides of the fixed frame along the width of the mining face, and the tops of the jacks are fixed to the bottom of the workbench. Affected by geological conditions, the scraper conveyor may move up and down, causing the cable to tilt. At this time, the lifting of the wiring box is driven by adjusting the lifting of the first jack to compensate for the change in cable length. After adjusting the height, the cable rotation angle is reduced to make the cable straight, thereby reducing the wear of the cable and the scraper cable trough.

[0019] Furthermore, the wiring box includes a first wiring box and a second wiring box located above the workbench, the first wiring box is fixed to the top surface of the workbench and is L-shaped when viewed from above, the second wiring box is located on one side of the first wiring box and is rectangular when viewed from above, the first wiring box and the second wiring box are opened at both ends respectively, the opening on the side of the first wiring box away from the second wiring box is the outlet end, and the opening on the side of the second wiring box away from the first wiring box is the inlet end, the top surface and bottom surface of the opening of the first wiring box close to the second wiring box side are respectively extended outward horizontally with a first semicircular plate, the top surface and bottom surface of the opening of the second wiring box close to the first wiring box side are respectively extended outward horizontally with a second semicircular plate, and the second semicircular plate The plate slides and fits on the inner side surface of the first semicircular plate. The thickness of the second wire box is slightly smaller than that of the first wire box. The middle parts of the first semicircular plate and the second semicircular plate and the workbench are connected to a positioning shaft for rotation together. A second jack is hinged on the workbench and located on one side of the first wire box along the length direction of the lane. An arc-shaped connecting ear is provided on one side of the second wire box. The end of the second jack is rotatably connected to the connecting ear. The second jack drives the second wire box to rotate around the positioning shaft. The second jack drives the connecting ear to move and then drives the second wire box to rotate around the positioning shaft, so that the cable enters directly into the second wire box to prevent the second wire box from causing wear to the cable.

[0020] Furthermore, the corners at the inner arc and the back arc of the first wire box are rounded to prevent wear on the cable.

[0021] The top of the cable is protected by a wiring box to prevent it from being hit by falling objects and to prevent the cable from loosening due to vibration caused by the operation of the coal mining machine. By adjusting the angles of the incoming and outgoing ends of the wiring box, friction between the cable and the end of the wiring box is prevented, which may affect the service life.

[0022] The above description is only a preferred feasible embodiment of the present utility model, and does not limit the scope of rights of the present utility model. All equivalent changes made using the contents of the present utility model specification and its drawings are included in the scope of rights of the present utility model.

Claims

1. A cable protection device at the tail of a scraper conveyor, characterized in that: It includes a fixing frame fixed at the tail end of the machine along the length direction of the mining face, a workbench is arranged on the top of the fixing frame, an L-shaped wiring box with openings at both ends is arranged on the workbench, the outlet end of the wiring box is opposite to the cable trough of the scraper machine, the inlet end of the cable box is opposite to the dry-type transformer in the laneway, and the angle between the inlet end and the outlet end of the wiring box can be adjusted according to the change of the position of the random tail.

2. The tail cable protection device of a scraper conveyor according to claim 1 is characterized in that: The first jacks are respectively fixed on both sides of the fixed frame along the width direction of the mining surface, and the tops of the jacks are fixed to the bottom surface of the workbench.

3. The tail cable protection device of a scraper conveyor according to claim 1 is characterized in that: The wiring box includes a first wiring box and a second wiring box located above the workbench, the first wiring box is fixed to the top surface of the workbench and is L-shaped when viewed from above, the second wiring box is located on one side of the first wiring box and is rectangular when viewed from above, the first wiring box and the second wiring box are opened at both ends respectively, the top surface and the bottom surface of the opening of the first wiring box close to the second wiring box side respectively have a first semicircular plate extending horizontally outward, the top surface and the bottom surface of the opening of the second wiring box close to the first wiring box side respectively have a second semicircular plate extending horizontally outward, the second semicircular plate is slidably fitted on the inner side surface of the first semicircular plate, the middle parts of the first and second semicircular plates and the workbench are rotatably connected with a positioning shaft, a second jack is hinged on the workbench and on one side of the first wiring box along the length direction of the lane, an arc-shaped connecting ear is provided on one side of the second wiring box, the end of the second jack is rotatably connected to the connecting ear, and the second jack drives the second wiring box to rotate around the positioning shaft.

4. The tail cable protection device of a scraper conveyor according to claim 3 is characterized in that: The corners at the inner arc and the back arc of the first wire box are both rounded.

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