Canvas covering device for coal stockyard

Abstract

A canvas covering device for a coal stockyard comprises a steel pipe, supporting devices for raising canvas are arranged at the two ends of the steel pipe, a bearing piece for raising the canvas is arranged in the middle of the steel pipe, the canvas is fixed to the steel pipe, the length of the bearing piece is far larger than the width, and the minimum diameter of the bearing piece is larger than the diameter of the steel pipe. The height of the canvas can be increased, the supporting piece drives the canvas to slide along the coal pile, the contact face of the supporting piece and the canvas is enlarged, the supporting piece and the canvas cannot sink into the coal pile, and the inclined plates on the two sides of the fixed supporting plate, the swing plates on the two sides of the supporting plate device and the bottom face have the inclination angle of 30-45 degrees, so that the canvas is always in an upward posture. The canvas is further prevented from falling into a coal pile.

Description

Technical Field

[0001] The invention relates to the field of a canvas covering device for a coal stockpile yard, and in particular to a canvas covering device for a coal stockpile yard. 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 dustproof plastic sheet is covered and uncovered manually. When using it, the staff needs 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 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 canvas is turned over the coal pile with the steel cable to cover the entire coal pile. However, when the canvas reaches the outside of the top of the coal pile, the steel cable is subjected to a horizontal tension, causing the steel cable to sink into the coal surface at the top of the coal pile, thereby generating great resistance. The canvas connected by the steel cable will also sink into the coal pile, causing the canvas to be unable to pass over the top of the coal pile or the canvas to tear. Therefore, workers must go to the sunken place and pull the canvas out by hand, which increases the workload and reduces work efficiency. Summary of the invention

[0004] In view of the above-mentioned deficiencies in the prior art, the present invention provides a canvas covering device for a coal stockpile yard, which prevents the canvas from sinking into a coal pile when a steel cable pulls the canvas, causing the canvas to be unable to cross the coal pile or torn.

[0005] The purpose of the present invention is to be achieved through the following technical solutions: A canvas covering device for a coal stockpile yard comprises a steel pipe. Both ends of the steel pipe are provided with lifting devices for lifting the canvas. A supporting member for lifting the canvas is provided in the middle of the steel pipe. The canvas is fixed on the steel pipe.

[0006] The canvas is fixed in a group of clamping plate grooves distributed along the axial direction of the steel pipe by fasteners.

[0007] The supporting member has a teardrop shape, a circle or an ellipse shape.

[0008] The lifting device comprises a fixed support plate, a steel pipe is fixedly connected in the middle of the fixed support plate, two symmetrical inclined plates are arranged on both sides of the fixed support plate, and the included angle α between the inclined plate and the bottom surface is in the range of 30°-45°.

[0009] The lifting device comprises a supporting plate, both sides of which are movably connected to a swinging plate, the upper part of the swinging plate is hinged to two hinge sleeves, the middle of the supporting plate is rotatably connected to two rotating rings, the rotating rings are slidably connected to the corresponding hinge sleeves, and a spring is arranged between the hinge sleeves and the rotating rings.

[0010] The bottom limiting plate of the supporting plate and the swing plate limiting plate of the swing plate limit the maximum angle α between the supporting plate and the swing plate.

[0011] Beneficial effects: The length of the supporting member is much larger than the width, and the minimum diameter of the supporting member is larger than the diameter of the steel pipe, which can not only raise the height of the canvas but also enable the supporting member to drive the canvas to slide along the coal pile and increase the contact surface of the coal pile. The supporting member and the canvas will not sink into the coal pile, and the inclined plates on both sides of the fixed support plate, the swing plates on both sides of the support plate device and the bottom surface have an inclination angle of 30°-45°, so that the canvas is always in an upward posture, further ensuring that the canvas will not sink into the coal pile. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic structural diagram of a canvas covering device for a coal stockpile yard as shown in Example 1 of the present invention.

[0013] Figure 2 This is a schematic structural diagram of a canvas covering device for a coal stockpile yard as shown in Example 2 of the present invention.

[0014] Figure 3 This is a schematic structural diagram of a coal stockpile yard canvas covering device as shown in Example 3 of the present invention.

[0015] Figure 4 It is a schematic diagram of the steel pipe structure of the present invention.

[0016] Figure 5 This is a schematic diagram of the fixed support plate structure of the present invention.

[0017] Figure 6 It is a schematic structural diagram of the lifting device described in the present invention.

[0018] Figure 7 The figure is a schematic diagram of the support plate structure of the present invention.

[0019] Figure 8 It is a schematic diagram of the swing plate structure of the present invention.

[0020] Fig. 9 It is a schematic diagram of the rotating ring structure of the present invention. DETAILED DESCRIPTION

[0021] The present invention is further described in detail below according to the accompanying drawings and embodiments: refer to Figure 1 , 23. The device is installed on a canvas 140 covering the coal pile. According to the size of the canvas 140, each canvas 140 can be provided with a plurality of the devices. The device includes a steel pipe 110. Both ends of the steel pipe 110 are provided with a device for lifting the device. A supporting member 130 for lifting the canvas 140 is provided in the middle of the steel pipe 110. The canvas 140 is fixed on the steel pipe 110.

[0022] Figure 4 The steel pipe 110 is made of a metal pipe, and a group of clamps 111 for fixing the canvas 140 are axially arranged on the cylindrical surface of the steel pipe 110. A clamp groove 112 is provided in the middle of the clamp 111 for inserting the canvas 140. The end face of the clamp 111 is provided with a fixing hole 113 for passing bolts. The canvas 140 is inserted into each clamp groove 112, and the bolts pass through the fixing holes 113 and the canvas 140 and fix the canvas 140 on the clamp 111. Such a connection can ensure that the canvas 140 is subjected to more uniform force when being pulled, and the force-bearing surface is larger, thereby preventing the canvas 140 from being pulled.

[0023] One or more supporting members 130 are arranged in the middle of the steel pipe 110. The supporting member 130 is fixed on the steel pipe 110. The length of the supporting member 130 is much greater than the width. The minimum diameter of the supporting member 130 must be greater than the diameter of the steel pipe 110. This can not only raise the height of the canvas 140, but also enable the supporting member 130 to drive the canvas 140 to slide along the coal pile and increase the contact surface of the coal pile. The supporting member 130 will not sink into the coal pile due to the traction force, ensuring that the canvas 140 will not sink into the coal pile. The supporting member 130 can be designed into various shapes. Figure 1 The supporting member 130 in the embodiment 1 is teardrop-shaped. Figure 2 The supporting member 130 in the second embodiment is circular. Figure 3 The supporting member 130 in the illustrated embodiment 3 is elliptical in shape. A circular or streamlined shape can reduce the resistance of the supporting member 130 when it slides along the coal pile. The supporting member 130 can be made of rubber material or metal material.

[0024] The two ends of the steel pipe 110 are provided with lifting devices. The lifting devices in embodiments 2 to 3 are as follows: Figure 5 As shown in the structure, the lifting device in this embodiment includes a fixed support plate 120, a support plate hole 121 fixedly connected to the steel pipe 110 is provided in the middle of the fixed support plate 120, two symmetrical inclined plates 122 are provided on both sides of the fixed support plate 120, and the angle α between the inclined plates 122 and the horizontal plane is in the range of 30°-45°. The inclined plates 122 ensure that the fixed support plate 120 is always in an upwardly tilted state when in contact with the coal pile, so that the canvas 140 is always in an upward posture, thereby preventing the canvas 140 from sinking into the coal pile due to horizontal tension.

[0025] The lifting device in embodiment 1 is as follows Figure 6-Figure 9According to the structure shown, the protruding device in this embodiment includes a support plate 210, a bottom plate hole 211 fixed to the steel pipe 110 is provided in the middle of the support plate 210, two symmetrical bottom hinge seats 213 are provided on both sides of the support plate 210, and an inclined bottom hinge seat 213 is provided on the outer side of each bottom hinge seat 213, and two symmetrical swing plates 220 are provided on both sides of the support plate 210, a swing plate hinge seat 221 hinged to the bottom hinge seat 213 is provided at the bottom of the swing plate 220, and a swing plate limit plate 222 with the same inclination as the bottom hinge seat 213 is provided in the middle of the swing plate hinge seat 221, two swivel rings 230 are rotatably connected to the outer side of the bottom plate hole 211, a swivel pin 231 is provided on the outer side of the swivel ring 230, and the swivel pin 231 is slidably connected to the hinge sleeve 240, the swivel ring 230 is hinged to the swing plate bearing seat 223 on the upper part of the swing plate 220, and the hinge sleeve 240 and the swivel ring 230 are connected. A spring 250 is provided, and the spring 250 is sleeved on the outside of the swivel pin 231. The two sides of the spring 250 are fixedly connected to the swivel 230 and the hinge sleeve 240 respectively. The swing plate 220 and the support plate 210 are movably connected. The angle α between the support plate 210 and the swing plate 220 varies in the range of 30°-45°. In the free state, the angle α between the support plate 210 and the swing plate 220 is 30°. When the swing plate 220 is blocked, the spring 250 is compressed. When the bottom limit plate 214 and the swing plate limit plate 222 are released, the swing plate 220 no longer rotates. At this time, the angle α between the swing plate 220 and the support plate 210 is 45°. The movably connected support plate 210 and the swing plate 220 can make the swing plate 220 always contact with the coal pile, so that the support plate device 200 always remains in an upward tilted state, and the canvas 140 is always in an upward posture.

[0026] When using the device, according to the size of the canvas 140, each canvas 140 can be provided with a plurality of the devices. The canvas 140 is inserted into the splint groove 112 of the steel pipe 110 and connected by fasteners. The hook 114 on one side of the steel pipe 110 is connected to the steel cable. The winch pulls the device and the canvas 140 through the steel cable. When the steel cable pulls the device, the length of the supporting member 130 is much greater than the width, and the minimum diameter of the supporting member 130 must be greater than the diameter of the steel pipe 110. This can not only raise the height of the canvas 140, but also enable the supporting member 130 to drive the canvas 140 to slide along the coal pile and increase the contact surface of the coal pile. The supporting member 130 and the canvas 140 will not sink into the coal pile. The inclined plates 122 on both sides of the fixed support plate 120 and the swing plates 220 and the bottom surface on both sides of the support plate device 200 have an inclination angle of 30°-45°, so that the canvas 140 is always in an upward posture.

Claims

1. A canvas covering device for a coal stockpile yard, characterized in that : It comprises a steel pipe (110), wherein both ends of the steel pipe (110) are provided with lifting devices for lifting a canvas (140), a supporting member (130) for lifting the canvas (140) is provided in the middle of the steel pipe (110), and the canvas (140) is fixed on the steel pipe (110).

2. A canvas covering device for a coal stockpile yard according to claim 1, characterized in that The canvas (140) is fixed in a group of clamping plate grooves (112) distributed along the axial direction of the steel pipe (110) by fasteners.

3. A canvas covering device for a coal stockpile yard according to claim 1, characterized in that The supporting member (130) has an outer shape of a teardrop, a circle or an ellipse.

4. A canvas covering device for a coal stockpile yard according to claim 1, characterized in that The lifting device comprises a fixed support plate (120), a steel pipe (110) is fixedly connected in the middle of the fixed support plate (120), two symmetrical inclined plates (122) are provided on both sides of the fixed support plate (120), and the angle α between the inclined plate (122) and the bottom surface ranges from (30)° to (45)°.

5. A canvas covering device for a coal stockpile yard according to claim 1, characterized in that The lifting device comprises a supporting plate (210), both sides of the supporting plate (210) are movably connected to a swinging plate (220), the upper part of the swinging plate (220) is hinged to two hinge sleeves (240), the middle of the supporting plate (210) is rotatably connected to two rotating rings (230), the rotating rings (230) and the corresponding hinge sleeves (240) are slidably connected, and a spring (250) is provided between the hinge sleeves (240) and the rotating rings (230).

6. A canvas covering device for a coal stockpile yard according to claim 1, characterized in that The bottom limiting plate (214) of the supporting plate (210) and the swing plate limiting plate (222) of the swing plate (220) limit the maximum angle α between the supporting plate (210) and the swing plate (220).

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