Connecting device for preventing canvas from falling into coal pile

Abstract

A connecting device for preventing canvas from falling into a coal pile comprises a pulling device, the pulling device comprises a cross rod connected with the canvas, a set of auxiliary steel cables are evenly distributed on the cross rod, one ends of the auxiliary steel cables are connected with the cross rod, the other ends of the auxiliary steel cables are connected with a main steel cable, and the auxiliary steel cables and the main steel cable are respectively provided with a set of floating devices. The floating device comprises a clamping plate fixed to the steel cables and a cylinder rotating around the clamping plate, a pointed-end protrusion for lifting the device is arranged on the floating device, when the device works, tensile force is evenly distributed on the set of auxiliary steel cables, and it is guaranteed that the canvas is in a straight state all the time; the problem of covering failure caused by canvas inclination due to uneven canvas stress during covering is avoided, the tip direction and the pulling direction of a first clamping plate tip protrusion and a cylinder are consistent, the first clamping plate tip protrusion and the cylinder not only can reduce the forward resistance of the first floating device, but also can enable the device to be lifted by a coal pile during forward moving, and the covering effect of the device is improved. The canvas and the steel cable leave the coal pile, the canvas is prevented from falling into the coal pile, the rotating cylinders can prevent the steel cable from being twisted when the canvas is pulled, and the resistance for pulling the canvas is reduced.

Description

Technical Field

[0001] The invention relates to the field of thermal power generation, and in particular to a connecting device for preventing a canvas from sinking into a coal pile. Background Art

[0002] In China, coal stockpiles are divided into open-air and closed types. Due to environmental protection requirements, open-air coal yards should take measures to prevent coal dust from damaging the environment. Covering with rainproof and dustproof canvas is the most commonly used technical measure. The dustproof plastic sheet is covered and uncovered manually. When using it, the staff must climb to the top of the coal pile in advance, and the canvas must be pulled to the coal pile with a rope at the top. The on-site manual covering of canvas is shown in the figure below. When covering manually, employees need to climb up and down the coal pile according to weather conditions, etc., which is labor-intensive and has high safety risks.

[0003] At present, mechanical canvas covering devices have been used in some power plants. The principle is to directly connect the canvas with the steel cable on the winch. After starting the winch, the steel cable is used to flip the canvas over the coal pile so as to cover the entire coal pile. When the winch steel cable is used to pull the canvas to cover the coal pile, due to the large friction between the canvas and the surface of the coal pile, the steel cable is also subjected to a large tension, so the steel cable is easily sunk into the coal pile, causing the canvas to be inserted into the coal pile. The resistance to the canvas becomes greater and greater, and eventually the canvas can no longer move upward. Summary of the invention

[0004] In view of the above-mentioned deficiencies in the prior art, the present invention provides a connecting device for preventing the canvas from sinking into the coal pile, which can make the canvas evenly stressed and improve the buoyancy of the steel cable, thereby preventing the steel cable and the canvas from sinking into the coal pile.

[0005] The purpose of the present invention is to be achieved through the following technical solutions: A connecting device to prevent a canvas from sinking into a coal pile comprises a pulling device, wherein the pulling device comprises a cross bar connected to the canvas, a group of auxiliary steel cables are evenly distributed on the cross bar, one end of the auxiliary steel cables is connected to the cross bar, and the other end of the auxiliary steel cables is connected to the main steel cables, a group of floating devices are respectively provided on the auxiliary steel cables and the main steel cables, the floating devices comprise a clamping plate fixed on the steel cables and a cylinder rotating around the clamping plate, and a pointed protrusion for lifting the device is provided on the floating device.

[0006] The first floating device includes a first clamping plate, a first clamping plate groove is provided in the middle of the first clamping plate, the steel cable is clamped in the two first clamping plate grooves, and the fasteners fix the two first clamping plates on the steel cable. A plurality of first floating devices are respectively provided on the auxiliary steel cable and the main steel cable.

[0007] One end of the first clamping plate has a first clamping plate pointed protrusion.

[0008] A sealing plate is provided on the end surface of the first clamping plate, the inside of the first cylinder is rotatably connected with the outside of the first clamping plate, and two sides of the first cylinder are clamped between the sealing plate and the pointed protrusion of the first clamping plate.

[0009] The second floating device includes a second clamping plate with a second clamping plate groove in the middle, the steel cable is clamped in the two second clamping plates, and the fasteners fix the two second clamping plates on the steel cable. A plurality of second floating devices are respectively provided on the auxiliary steel cable and the main steel cable.

[0010] The second cylinder has cylindrical pointed protrusions at both ends.

[0011] The two second cylinders are connected by a fastener, and the two second cylinders are rotatably connected to the second clamping plate in the middle.

[0012] Beneficial effects: When the device is working, the pulling force is evenly distributed on a group of auxiliary steel cables, ensuring that the canvas is always in a straight state, avoiding the problem of uneven force on the canvas during covering, which may cause the canvas to tilt and thus fail to cover. The pointed protrusion of the first clamping plate and the pointed direction of the cylinder are consistent with the pulling direction. The pointed protrusion of the first clamping plate and the cylinder can not only reduce the resistance of the first floating device when it moves forward, but also enable the device to be lifted by the coal pile when it moves forward. The canvas and the steel cable leave the coal pile, avoiding the canvas from sinking into the coal pile. The rotating cylinder and the cylinder can prevent the steel cable from being twisted when the canvas is pulled, thereby reducing the resistance to pulling the canvas. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic structural diagram of a first embodiment of a connecting device for preventing a canvas from sinking into a coal pile according to the present invention.

[0014] Figure 2 It is a schematic structural diagram of the first floating device described in the present invention.

[0015] Figure 3 The figure is a schematic diagram of the internal structure of the first floating device described in the present invention.

[0016] Figure 4 This is a schematic diagram of the first card board structure described in the present invention.

[0017] Figure 5 This is a schematic structural diagram of a second embodiment of the connecting device for preventing a canvas from sinking into a coal pile according to the present invention.

[0018] Figure 6 It is a schematic structural diagram of the second floating device described in the present invention.

[0019] Figure 7 The figure is a schematic diagram of the internal structure of the second floating device described in the present invention.

[0020] Figure 8 This is a schematic diagram of the second card board structure described in the present invention.

[0021] Fig. 9 This is a schematic diagram of the second cylinder structure described in the present invention. DETAILED DESCRIPTION

[0022] The present invention is further described in detail below according to the accompanying drawings and embodiments: refer to Figure 1 , Figure 5 The device includes a pulling device 110 and a group of floating devices connected to the pulling device 110, the pulling device 110 includes a cross bar 111 connected to the canvas, a group of auxiliary steel cables 112 are evenly distributed on the cross bar 111, one end of the auxiliary steel cables 112 is connected to the cross bar 111, and the other end of the auxiliary steel cables 112 is connected to the main steel cables 113. During operation, the force is evenly distributed on the auxiliary steel cables 112 and the main steel cables 113, and the pulling force is evenly distributed on a group of auxiliary steel cables 112, so that the canvas is always in a straight state, avoiding the problem of uneven force on the canvas during covering, which will cause the canvas to tilt and thus fail to cover. A group of floating devices are respectively connected to the auxiliary steel cables 112 and the main steel cables 113, and the floating ball device includes a card plate fixed on the auxiliary steel cables 112 and the main steel cables 113 and a cylinder rotating around the card plate.

[0023] Figures 1 to 3 The first embodiment of the floating device is shown as a first floating device 200. The first floating device 200 includes Figure 4 The first clamping plate 210 shown in the figure has a first clamping plate groove 211 in the middle thereof, and a group of first clamping plate holes 213 on the end face of the first clamping plate 210. The two first clamping plates 210 are clamped on the outside of the steel cable, and the steel cable is clamped in the two first clamping plate grooves 211. Bolts pass through the first clamping plate holes 213 and are connected with nuts. The bolts and nuts fix the two first clamping plates 210 on the steel cable. Multiple first floating devices 200 are respectively provided on the auxiliary steel cable 112 and the main steel cable 113 as needed.

[0024] A sealing plate 220 is provided on the end face of the first clamping plate 210, and a bolt passes through the sealing plate 220 and is threadedly connected with the first clamping plate screw hole 214, and the screw fixes the sealing plate 220 on the first clamping plate 210, and one end of the first clamping plate 210 has a first clamping plate pointed protrusion 212, and the first clamping plate pointed protrusion 212 can be conical, circular or other shapes with a pointed outer side, and a first cylinder 230 is provided between the sealing plate 220 and the first clamping plate 210, and the first cylinder 230 is sleeved on the outer sides of the two first clamping plates 210, and the first clamping plate arc surface 215 inside the first cylinder 230 and the outer side of the first clamping plate 210 rotates and cooperates, and the two sides of the first cylinder 230 are clamped between the sealing plate 220 and the first clamping plate pointed protrusion 212, and the first cylinder 230 rotates around the sealing plate 220. The tip direction of the first clamping plate pointed protrusion 212 is consistent with the pulling direction of the canvas. When the canvas is pulled, the first clamping plate pointed protrusion 212 can not only reduce the resistance of the first floating device 200 when moving forward, but also enable the device to be lifted up by the coal pile when moving forward, and the canvas and the steel cable leave the coal pile, avoiding the canvas from sinking into the coal pile. The rotating first cylinder 230 can prevent the steel cable from being twisted when the canvas is pulled, thereby reducing the resistance of pulling the canvas.

[0025] Figures 5 to 7 The second floating device 300 of the second embodiment of the floating device is shown. The second floating device 300 includes Figure 8 The second clamping plate 310 shown in the figure has a second clamping plate groove 311 in the middle thereof, and a group of second clamping plate holes 312 on the end face thereof. The two second clamping plates 310 are clamped on the outside of the steel cable, and the steel cable is clamped in the two second clamping plate grooves 311. Bolts pass through the second clamping plate holes 312 and are connected with nuts. The bolts and nuts fix the two second clamping plates 310 on the steel cable. Multiple second floating devices 300 are respectively provided on the auxiliary steel cable 112 and the main steel cable 113 as needed.

[0026] Fig. 9The second cylinder 320 shown is a hollow structure with a semi-cylindrical middle and outer positioning boss holes 322 at both ends. The positioning boss holes 322 can be conical, circular or other shapes with pointed outer ends. The second cylinder 320 has a positioning boss 321 in the middle of both ends, and a positioning boss hole 322 in the middle of the positioning boss 321. The end faces of the two second cylinders 320 have a group of cylinder connecting holes 323. Bolts pass through the cylinder connecting holes 323 to fix the two second cylinders 320. The positioning boss holes 322 in the middle of the second cylinders 320 2 is stuck on the outside of the steel cable and can rotate around the steel cable, the inner end surface of the positioning boss 321 is stuck on both sides of the second clamping plate 310, and the second cylinder 320 is positioned on the second clamping plate 310. When the canvas is pulled, the spherical second cylinder 320 at both ends can not only reduce the resistance of the second floating device 300 when it moves forward, but also enable the device to be lifted by the coal pile when it moves forward, and the canvas and the steel cable leave the coal pile, thereby avoiding the canvas from sinking into the coal pile. The rotating second cylinder 320 can prevent the steel cable from being twisted when the canvas is pulled, thereby reducing the resistance of pulling the canvas.

[0027] When the device is used, a group of the first floating device 200 or the second floating device 300 is fixedly connected to the auxiliary steel cable 112 and the main steel cable 113 respectively, a canvas is connected to one side of the cross bar 111, and the main steel cable 113 is connected to the winch. When the winch is working, the main steel cable 113 is pulled, and the main steel cable 113 drives the canvas to move upward along the coal pile through a group of auxiliary steel cables 112. When working, the force is evenly distributed on the auxiliary steel cables 112 and the main steel cables 113, and the tension is evenly distributed on a group of auxiliary steel cables 112, ensuring that the canvas is always in a straight state, avoiding the problem of uneven force on the canvas during covering, which may cause the canvas to tilt and thus fail to cover. The pointed direction of the first clamping plate pointed protrusion 212 and the second cylinder 320 is consistent with the pulling direction. The first clamping plate pointed protrusion 212 and the second cylinder 320 can not only reduce the resistance of the first floating device 200 when it moves forward, but also enable the device to be lifted up by the coal pile when it moves forward, and the canvas and the steel cable leave the coal pile, thereby avoiding the canvas from being stuck in the coal pile. The rotating first cylinder 230 and the second cylinder 320 can prevent the steel cable from being twisted when the canvas is pulled, thereby reducing the resistance of pulling the canvas.

Claims

1. A connecting device for preventing a canvas from sinking into a coal pile, characterized in that : It comprises a pulling device (110), the pulling device (110) comprises a cross bar (111) connected to a canvas, a group of auxiliary steel cables (112) are evenly distributed on the cross bar (111), one end of the auxiliary steel cables (112) is connected to the cross bar (111), and the other end of the auxiliary steel cables (112) is connected to a main steel cable (113), and a group of floating devices are respectively provided on the auxiliary steel cables (112) and the main steel cables (113), and the floating devices comprise a card plate fixed on the steel cable and a cylinder rotating around the card plate, and a pointed protrusion for lifting the device is provided on the floating device.

2. A connecting device for preventing a canvas from sinking into a coal pile according to claim 1, characterized in that The first floating device (200) comprises a first clamping plate (210), the first clamping plate (210) having a first clamping plate groove (211) in the middle, the steel cable being clamped in the two first clamping plate grooves (211), the fasteners fixing the two first clamping plates (210) on the steel cable, and the auxiliary steel cable (112) and the main steel cable (113) are respectively provided with a plurality of first floating devices (200).

3. A connection device for preventing a canvas from sinking into a coal pile according to claim 2, characterized in that One end of the first clamping plate (210) has a first clamping plate pointed protrusion (212).

4. A connecting device for preventing a canvas from sinking into a coal pile according to claim 2, characterized in that The end surface of the first clamping plate (210) is provided with a sealing plate (220), the interior of the first cylinder (230) and the exterior of the first clamping plate (210) are rotatably connected, and the two sides of the first cylinder (230) are clamped between the sealing plate (220) and the pointed protrusion (212) of the first clamping plate.

5. A connecting device for preventing a canvas from sinking into a coal pile according to claim 1, characterized in that The second floating device (300) comprises a second clamping plate (310), the second clamping plate (310) having a second clamping plate slot (311) in the middle, the steel cable being clamped in the two second clamping plates (310), the fasteners fixing the two second clamping plates (310) on the steel cable, and a plurality of second floating devices (300) being respectively provided on the auxiliary steel cable (112) and the main steel cable (113).

6. A connecting device for preventing a canvas from sinking into a coal pile according to claim 5, characterized in that The second cylinder (320) has cylindrical pointed protrusions at both ends.

7. A connecting device for preventing a canvas from sinking into a coal pile according to claim 5, characterized in that The two second cylinders (320) are connected via a fastener, and the two second cylinders (320) are rotatably connected to the second clamping plate (310) in the middle.

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