Traction method for coal pile covering

Abstract

The invention discloses a traction method for coal pile covering. The existing measuring method has the defects of complicated operation, unsuitability for field measurement or capability of only measuring the porosity in pores in coal. The method comprises the following steps; hooks of the device are hung in hanging holes in the edge of the canvas, and an operator pulls the canvas to gradually cover the coal pile through the hand pulling device; as the plastic rubber tube with the diameter of 10cm and the floating balls with different specifications are arranged on the rope, the volume of the floating balls at the head end and the tail end of the rope is 4-5 times larger than that of the floating ball body in the middle, and the buoyancy of the rope is increased; when the canvas is pulled, the floating ball can increase the height of the rope, so that the rope is not in contact with the surface of a coal pile; the buoyancy lifting device is used for buoyancy lifting of coal pile covering.

Description

Technical Field

[0001] The invention relates to a traction method for covering a coal pile. Background Art

[0002] Domestic 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 dust-proof plastic sheet is covered and uncovered manually. When using it, the personnel need to 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. When the canvas is pulled manually with a rope, the rope will sink into the coal pile on the outer slope of the top of the coal pile. The workers must walk to the sinking place and pull the rope out by hand, which increases the workload and low work efficiency. Employees need to climb up and down the coal mountain according to weather conditions, which is intensive and has high safety risks.

[0003] Due to the various shapes of coal piles, the irregular shapes of coal piles often change, the unevenness of the coal piles, and the uneven size of the coal pile particles, when using ropes to pull the canvas, the ropes are easily sunk into the coal piles, and the sunken ropes must be taken out manually before the canvas can be pulled again. Since the coal piles are soft, the stressed ropes will sink into the coal piles again, and this will happen repeatedly, greatly reducing the efficiency of manual canvas pulling. Summary of the invention

[0004] In order to overcome the defects of the prior art, a traction method for covering a coal pile is provided, which can prevent the stressed rope from sinking into the coal pile when pulling the canvas, thereby improving the work efficiency of manually pulling the canvas.

[0005] The above objectives are achieved through the following solutions: A traction method for covering a coal pile, the method comprising the following steps: (1) Hang the hook of the device into the hanging hole on the side of the canvas, and the operator pulls the canvas gradually over the coal pile by hand; (2) Since a 10 cm diameter plastic hose and floats of different specifications are installed on the rope, the volume of the floats at both ends of the rope is 4-5 times larger than that of the float in the middle, which increases the buoyancy of the rope; (3) When pulling the canvas, the float will raise the height of the rope so that the rope does not contact the surface of the coal pile.

[0006] The traction method for covering a coal pile is described as follows: a plurality of middle buoyancy devices are sleeved on the rope, each two of the middle buoyancy devices are separated by a separation tube, end buoyancy devices are sleeved on both ends of the rope, and hooks are fixed to both ends of the rope.

[0007] In the traction method for covering a coal pile, the middle buoyancy device is a conical buoyancy ball.

[0008] In the traction method for covering a coal pile, the end buoyancy device is a conical buoyancy ball, the diameter of which is 4-5 times the diameter of the middle buoyancy device.

[0009] In the traction method for covering a coal pile, the separation pipe is a plastic hose. Beneficial Effects

[0010] 1. In the present invention, a plastic hose with a diameter of 10 cm and floats of different specifications are arranged on the rope. The volume of the floats at both ends of the rope is 4-5 times larger than that of the float in the middle, thereby greatly increasing the buoyancy of the rope. When pulling the canvas, the floats can firstly increase the height of the rope so that the rope does not contact the surface of the coal pile. Secondly, the float is in a cone shape with thin ends and thick middle, so the float will not sink into the coal pile, and the friction resistance is small when the float contacts the surface of the coal pile, so that the traction rope floats on the surface of the coal pile and does not sink into the coal pile, and the friction between the rope and the coal pile is reduced, thereby improving the efficiency of manually pulling the canvas. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a front view of the present invention; Figure 2 is a side view of the present invention; In the figure: 1. hook; 2. end buoyancy device; 3. separator tube; 4. rope; 5. middle buoyancy device. DETAILED DESCRIPTION

[0012] A traction method for covering a coal pile, the method comprising the following steps: (1) Hang the hook of the device into the hanging hole on the side of the canvas, and the operator pulls the canvas gradually over the coal pile by hand; (2) Since a 10 cm diameter plastic hose and floats of different specifications are installed on the rope, the volume of the floats at both ends of the rope is 4-5 times larger than that of the float in the middle, which increases the buoyancy of the rope; (3) When pulling the canvas, the float will raise the height of the rope so that the rope does not contact the surface of the coal pile.

[0013] The traction method for covering a coal pile is described, wherein a plurality of middle buoyancy devices 5 are sleeved on the rope, and each two of the middle buoyancy devices are separated by a separation tube 3, end buoyancy devices 2 are sleeved on both ends of the rope, and hooks 1 are fixed to both ends of the rope.

[0014] In the traction method for covering a coal pile, the middle buoyancy device is a conical buoyancy ball.

[0015] In the traction method for covering a coal pile, the end buoyancy device is a conical buoyancy ball, the diameter of which is 4-5 times the diameter of the middle buoyancy device.

[0016] In the traction method for covering a coal pile, the separation pipe is a plastic hose.

[0017] To increase buoyancy, a plastic hose is installed on the rope. The length of the plastic hose is 50cm and the diameter of the plastic hose is 10cm. Buoyancy balls are installed at both ends of each plastic hose. That is, the buoyancy balls are installed on the rope at a certain interval (50cm). The volume of the buoyancy balls at both ends of the rope is 4-5 times larger than the volume of the buoyancy ball in the middle. Metal hooks are set at both ends of the rope to connect the canvas. In order to reduce the friction with the coal pile surface, the float adopts a cone shape to reduce the contact area with the coal pile surface. At the same time, the volume of the floats at both ends of the rope is 4-5 times larger than that of the float in the middle. This is because the rope is subjected to the most force at the ends and sinks the deepest into the coal pile, so the float volume is increased to provide greater lifting force. Considering the force distribution of the rope, the force at the ends is generally 3-4 times that of the middle, so the volume of the floats at the ends is set to 4-5 times that of the middle float. In order to increase strength and reduce weight, the buoyancy ball is made of rubber. For ease of use, the buoyancy ball has a hole in the middle and can be detachably mounted on the outer periphery of the rope. Since the coal particles in the coal pile are not of the same size and there are gaps inside the coal, the rope is stressed when the canvas is pulled and will inevitably sink into the coal pile when it is pressed against the surface of the coal pile. If the rope sinks into the coal pile, the friction will increase, making it impossible to pull the canvas manually. At the same time, the force on the ends of the rope is much higher than the force on the middle part of the rope. In the present invention, a plastic hose with a diameter of 10 cm and floats of different specifications are arranged on the rope, and the volume of the floats at the ends of the rope is 4-5 times greater than the volume of the float in the middle, thereby greatly increasing the buoyancy of the rope. When the canvas is pulled, the float will firstly increase the height of the rope so that the rope does not contact the surface of the coal pile; secondly, the float adopts a cone-like shape, which is thin at both ends and thick in the middle, so the float will not sink into the coal pile, and the friction resistance is small when the float contacts the surface of the coal pile, so that the traction rope floats on the surface of the coal pile and does not sink into the coal pile, and the friction between the rope and the coal pile is reduced, thereby improving the efficiency of manually pulling the canvas.

Claims

1. A traction method for covering a coal pile, characterized in that: The method comprises the following steps: (1) Hang the hook of the device into the hanging hole on the side of the canvas, and the operator pulls the canvas gradually over the coal pile by hand; (2) Since a 10 cm diameter plastic hose and floats of different specifications are installed on the rope, the volume of the floats at both ends of the rope is 4-5 times larger than that of the float in the middle, which increases the buoyancy of the rope; (3) When pulling the canvas, the float will raise the height of the rope so that the rope does not contact the surface of the coal pile.

2. A traction method for covering a coal pile according to claim 1, characterized in that: The rope is covered with a plurality of middle buoyancy devices, and every two middle buoyancy devices are separated by a separation tube. The two ends of the rope are covered with end buoyancy devices, and hooks are fixed to the two ends of the rope respectively.

3. A traction method for covering a coal pile according to claim 2, characterized in that: The middle buoyancy device is a conical buoyancy ball.

4. A traction method for covering a coal pile according to claim 3, characterized in that: The end buoyancy device is a conical buoyancy ball, the diameter of which is 4-5 times the diameter of the middle buoyancy device.

5. A traction method for covering a coal pile according to claim 4, characterized in that: The separating tube is a plastic hose.

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