A belt unwinding device for a coal mine storage and belt warehouse

Abstract

The application discloses a belt unwinding device for a coal mine belt storage warehouse, which comprises a bearing bottom frame, a guide assembly and a roller assembly. The bearing bottom frame is a rectangular frame structure and is placed on a working ground. The guide assembly is arranged on the side where the feeding end of the bearing bottom frame is located and comprises a heightening block and a guide plate. The heightening block is arranged on the upper surface of the side where the feeding end of the bearing bottom frame is located. One end of the guide plate is fixed on the top of the heightening block, and the other end of the guide plate extends to the outside of the bearing bottom frame and is placed on the working ground. The end of the guide plate located on the heightening block is higher than the end of the guide plate placed on the working ground, so that an inclined guide surface rising from the working ground to the bearing bottom frame is formed. The roller assembly is arranged on the bearing bottom frame and comprises two parallel rollers. The belt unwinding device solves the problem that the existing belt storage warehouse needs to be lifted by a lifting anchor point when the belt storage capacity is increased, and the safety risk of belt rolling and hurting people is eliminated. The structure is safe and reliable, the labor intensity is reduced, and the working efficiency is improved.

Description

Technical Field

[0001] This invention belongs to the technical field of auxiliary equipment for underground belt conveyors in coal mines, and specifically relates to a belt winding and unwinding device for coal mine belt storage bins. Background Technology

[0002] In underground coal mine tunneling operations, belt conveyors in conjunction with roadheaders are a common transportation method for delivering goods. As the tunneling face advances, the tail of the belt conveyor needs to be stretched and the belt extended each shift. Therefore, it is necessary to regularly increase the belt storage capacity in the belt storage bin to replenish the extra length required for belt extension.

[0003] Currently, the common method for increasing belt storage capacity in belt storage bins is as follows: The entire belt roll is placed horizontally, a tubular longitudinal beam is inserted through the central hole of the roll, and two chain hoists are used to suspend both ends of the longitudinal beam. After the entire roll is lifted to a certain height, a tensioning winch is used to unwind the belt and add it to the storage bin. However, this method uses two chain hoists to lift the entire roll, and each chain hoist needs to be anchored at a point on the roof or sides of the tunnel. Not only is the anchoring reliability limited by roof conditions, but it is also difficult to achieve synchronous balance at both ends during lifting, making the belt roll prone to tilting, slipping, and falling off, posing a safety hazard of belt rolling and injuring people. Furthermore, this method requires numerous tools, a large number of workers, and is time-consuming, severely impacting normal production progress.

[0004] To address the aforementioned issues, existing technologies also employ a method where the entire roll of belt is manually pushed open on the ground. This involves multiple workers working together to roll and push the entire roll of belt open on the ground before using a tensioning winch to add it to the storage bin. However, this method is extremely labor-intensive, requiring workers to be in direct contact with the belt roll for extended periods. It also carries the risk of the belt rolling off and injuring workers, and is far less efficient. Summary of the Invention

[0005] The purpose of this invention is to provide a belt winding and unwinding device for coal mine belt storage bins, so as to solve the problem that existing belt storage bins require lifting anchor points when increasing belt storage capacity, and there is a safety risk of belt rolling down and injuring people.

[0006] The present invention adopts the following technical solution: A belt winding and unwinding device for a coal mine belt storage bin includes: The supporting base frame is a rectangular frame structure, which is placed on the working ground; A guiding component, located on the side of the material inlet of the supporting base frame, includes a shim block and a guide plate. The shim block is located on the upper surface of the side of the material inlet of the supporting base frame. One end of the guide plate is fixed to the top of the shim block, and the other end extends outward from the supporting base frame and rests on the working ground. The end of the guide plate located on the shim block is higher than the end resting on the working ground, forming an inclined guiding surface that rises from the working ground towards the supporting base frame, used to roll the belt roll directly onto the supporting base frame along the working ground. The idler assembly, mounted on the support base frame, includes two parallel idlers for supporting the belt roll that is pushed onto the support base frame.

[0007] The beneficial effects of this invention are as follows: The invention places the supporting base frame on the working ground, and a guide plate forms an inclined guide surface that rises from the ground towards the supporting base frame. The conveyor belt roll is directly rolled along the working ground onto two parallel idlers. The entire process eliminates the need for lifting anchor points, chain hoists, and direct contact between personnel and the conveyor belt roll, fundamentally eliminating the risk of belt roll-off injuries during lifting operations and significantly improving operational safety. Simultaneously, only 1-2 people are required to complete the operation, reducing the time from over an hour to just a few minutes, greatly reducing labor intensity and improving operational efficiency. Furthermore, the main components of the device can be manufactured using recycled materials from underground coal mines, resulting in a simple and reliable structure with low manufacturing and maintenance costs, making it highly valuable for widespread application. Attached Figure Description

[0008] Figure 1 This is a structural schematic diagram from a first perspective of the present invention; Figure 2 This is a structural schematic diagram from a second perspective of the present invention; Figure 3 This is the front view of the present invention; Figure 4 This is the left view of the present invention; Figure 5 This is a rear view of the present invention; Figure 6 This is a top view of the present invention; Figure 7 This is a schematic diagram of the structure of the guiding component in this invention; Figure 8 This is a schematic diagram of the idler roller assembly in this invention; Figure 9 This is a schematic diagram of the limiting component in this invention; In the diagram: 1. Supporting base frame, 2. Elevating block, 3. Guide plate, 4. Diagonal brace, 5. Limiting baffle, 6. Hinge seat, 7. Positioning component, 8. Baffle pin, 9. Roller seat, 10. Slot, 11. Roller, 12. Pressure plate, 13. Pressure plate pin. Detailed Implementation

[0009] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0010] like Figure 1 and Figure 2 As shown, the present invention provides a belt winding and unwinding device for a coal mine storage bin, comprising a supporting base frame 1, a guide assembly, an idler assembly, a limiting assembly, and a machine fixing structure.

[0011] like Figure 6 As shown, the supporting base frame 1 is a rectangular frame structure, placed on the working ground, serving as the mounting base for all other components. The supporting base frame 1 has a side containing the feed end and a side containing the limiting end, with the limiting end opposite to the feed end. The dimensions of the supporting base frame 1 are determined based on the width and diameter of commonly used belt rolls, ensuring stable support for the belt roll.

[0012] The feeding end and the limiting end of the supporting bottom frame 1 correspond to the two long sides of the rectangular frame, and the two short sides connect the two long sides; the roller seat 9 is set on the upper surface of the two short sides.

[0013] like Figure 7 As shown, the guiding assembly is located on the side of the material inlet of the supporting base frame 1, and includes a shim block 2 and a guide plate 3. The shim block 2 is located on the upper surface of the side of the material inlet of the supporting base frame 1, and has a certain bearing height, used to elevate one end of the guide plate 3. The shim block 2 is not limited to a specific shape and material, and can be a nut, a short steel pipe, a metal pad, a rectangular steel segment, or any material with sufficient bearing strength and suitable height.

[0014] like Figure 3 As shown, one end of the guide plate 3 is fixed to the top of the raised block 2 (it can be fixed by welding), and the other end extends outward from the bearing base frame 1 and is placed on the working ground. The end of the guide plate 3 located on the raised block 2 is higher than the end placed on the working ground, forming an inclined guide surface that rises from the working ground towards the bearing base frame 1, which is used to roll the belt roll directly onto the bearing base frame 1 along the working ground.

[0015] A diagonal brace 4 is provided between the bottom of the guide plate 3 and the supporting base frame 1. The diagonal brace 4, together with the guide plate 3 and the supporting base frame 1, forms a triangular support structure. The diagonal brace 4 can be made of angle steel, channel steel, round steel, or steel bar ends. One end is welded to the middle of the bottom surface of the guide plate 3, and the other end is welded to the side of the material inlet end of the supporting base frame 1. At least two diagonal braces 4 are provided, respectively located on the bottom surface of the guide plate 3 near the two side edges, to enhance the bending load-bearing capacity of the guide plate 3 and prevent the guide plate 3 from being bent and deformed when a heavy conveyor belt rolls in.

[0016] like Figure 8As shown, the idler assembly is mounted on the support base frame 1 and includes two parallel idlers 11 for supporting the belt roll that is pushed onto the support base frame 1.

[0017] The idler assembly also includes idler seats 9, which are disposed on the upper surfaces of the two sides of the supporting base frame 1 (the sides correspond to the two short sides of the rectangular frame). At least two idler seats 9 are provided on each side, and the idler seats 9 on the two sides are arranged opposite to each other. The idler 11 is mounted on the idler seats 9 on both sides.

[0018] The idler seat 9 is welded to the upper side surface of the support frame 1. During welding, the design spacing between the two idlers 11 is first determined based on the diameter of a commonly used belt roll. The idler seat 9 is then positioned at the corresponding position on the upper side surface of the support frame 1, ensuring that the upper surfaces of the four idler seats 9 are flush and that the line connecting the centers of the slots of two idler seats 9 on the same side is parallel to the side direction of the support frame 1. After welding, no displacement or loosening will occur during use. The idler seat 9 can also be detachably connected to the support frame 1 using bolts.

[0019] like Figure 4 As shown, several slots 10 are arranged side by side on the upper end of the idler seat 9. The slots 10 are used to place the idler shaft. By adjusting the position of the idler 11, it can be adapted to belt rolls of different diameters.

[0020] A pressure plate 12 is provided on the idler roller seat 9. The first end of the pressure plate 12 is hinged to one side of the idler roller seat 9, and the second end of the pressure plate 12 has a pressure plate locking hole. The idler roller seat 9 has a seat locking hole at the position corresponding to the second end of the pressure plate 12. After the idler roller shaft is placed into the slot 10, when the pressure plate 12 is flipped to a horizontal state, the pressure plate locking hole and the seat locking hole are aligned. The pressure plate pin 13 passes through the pressure plate locking hole and the seat locking hole to lock the pressure plate 12. The idler roller shaft is restricted within the slot 10 to prevent the idler roller shaft from jumping out of the slot 10 due to vibration when the belt is rotated and unwound.

[0021] like Figure 9 As shown, the limiting component is located on the side of the limiting end of the supporting base frame 1 (the limiting end corresponds to the other long side of the rectangular frame), and the side of the limiting end is opposite to the side of the feeding end. The limiting component includes two limiting baffles 5, which are arranged at intervals along the side of the limiting end. The surfaces of the two limiting baffles 5 are opposite each other, and their thickness directions are both facing the inside of the supporting base frame 1. They are used to prevent the belt roll from continuing to roll towards the limiting end when the belt roll is pushed onto the supporting base frame 1.

[0022] The limiting baffle 5 is installed on the bearing base frame 1 via the hinge seat 6, and can rotate between the vertical and horizontal positions around the hinge axis; when the limiting baffle 5 rotates to the horizontal position, it fits against the upper surface of the bearing base frame 1 and is kept in a folded state by gravity.

[0023] The hinge seat 6 consists of two ear plates fixed to the supporting base frame 1 and a hinge pin passing through the ear plates and the bottom of the limiting baffle 5. When the limiting baffle 5 is in the vertical position, its thickness direction faces the inside of the supporting base frame 1, which can block the belt roll; when the limiting baffle 5 is in the horizontal position, its plate surface is attached to the upper surface of the supporting base frame 1, and it is kept in a folded state by gravity, reducing the space occupied during storage and transportation.

[0024] like Figure 5 As shown, the limiting baffle 5 has a baffle locking hole near its bottom; a positioning element 7 is provided on one side of the limiting baffle 5, and the positioning element 7 has a positioning hole; when the limiting baffle 5 rotates to the vertical position, the baffle locking hole and the positioning hole are coaxially aligned, and the baffle pin 8 passes through the baffle locking hole and the positioning hole to lock the limiting baffle 5 in the vertical position. The positioning element 7 can be a nut, a perforated pad, a perforated ear plate, or a component with a perforated structure that is welded and fixed to the upper surface of the bearing base frame 1.

[0025] The four corners of the supporting base frame 1 are provided with anchor points (such as holes opened on the base frame or welded perforated ear plates) to temporarily anchor the entire device to the working ground by anchor rods or expansion bolts when needed, so as to prevent the device from being pulled and displaced by the rotational pull of the belt roll during the belt extension process.

[0026] The working process of this invention is described below: When in use, place this device in a suitable position in front of the tape storage compartment. Flip the limit baffle 5 to the vertical position and lock it in place by inserting the baffle pin 8 into the baffle locking hole and positioning hole.

[0027] The operator rolls the entire belt along the inclined guide surface formed by the guide plate 3 onto the device. After the belt rolls onto the two idler rollers 11, it is stably positioned between the idler rollers 11 by its own weight. Two limit baffles 5 on one side of the limit end prevent the belt roll from continuing to roll towards the limit end.

[0028] Subsequently, the operator pulls out the outer end of the belt from the bottom of the belt roll and connects it to the pulley inside the belt storage bin. The tension winch is started, and the winch wire rope pulls the pulley backward into the belt storage bin. The pulley pulls the belt end, and the belt roll is passively rotated and unwound on the two idler rollers 11, completing the belt replenishment operation in the belt storage bin.

[0029] All components of this invention can be made from scrap materials from underground coal mines: the load-bearing bottom frame 1 can be made from scrap belt longitudinal beam channel steel; the idler roller 11 can be made from scrap straight idler roller; the shim block 2 can be made from scrap nuts or short steel pipes; the limit baffle 5, guide plate 3, idler roller seat 9, etc. can be made from scrap steel plates by cutting and processing; the diagonal brace 4 can be made from scrap steel bar ends or angle steel.

Claims

1. A belt winding and unwinding device for a coal mine belt storage bin, characterized in that, include: The supporting base frame (1) is a rectangular frame structure, which is placed on the working ground; A guiding component is provided on the side where the material inlet of the bearing base frame (1) is located, including a shim block (2) and a guide plate (3). The shim block (2) is provided on the upper surface of the side where the material inlet of the bearing base frame (1) is located. One end of the guide plate (3) is fixed to the top of the shim block (2), and the other end extends outward from the bearing base frame (1) and is placed on the working ground. The end of the guide plate (3) located on the shim block (2) is higher than the end placed on the working ground, forming an inclined guiding surface that rises from the working ground towards the bearing base frame (1), which is used to roll the belt roll directly onto the bearing base frame (1) along the working ground. The idler assembly, disposed on the bearing base frame (1), includes two parallel idlers (11) for supporting the belt roll pushed onto the bearing base frame (1).

2. The belt winding and unwinding device for a coal mine storage bin according to claim 1, characterized in that, It also includes a limiting component, which is set on the side where the limiting end of the supporting bottom frame (1) is located. The limiting component includes two limiting baffles (5). The two limiting baffles (5) are arranged at intervals along the side where the limiting end is located. The surfaces of the two limiting baffles (5) are opposite each other, and their thickness directions are both facing the inside of the supporting bottom frame (1). They are used to prevent the belt roll from continuing to roll towards the limiting end when the belt roll is pushed onto the supporting bottom frame (1). The side where the limiting end is located is opposite to the side where the feed end is located.

3. A belt winding and unwinding device for a coal mine storage bin according to claim 2, characterized in that, The limiting baffle (5) is installed on the bearing base frame (1) through the hinge seat (6) and can rotate between the vertical and horizontal positions around the hinge axis; when the limiting baffle (5) rotates to the horizontal position, it fits against the upper surface of the bearing base frame (1) and is kept in a folded state by gravity.

4. A belt winding and unwinding device for a coal mine storage bin according to claim 2, characterized in that, The limiting baffle (5) has a baffle locking hole near the bottom; a positioning member (7) is provided on one side of the limiting baffle (5), and a positioning hole is provided on the positioning member (7); when the limiting baffle (5) is rotated to the vertical position, the baffle locking hole and the positioning hole are coaxially aligned, and the baffle pin (8) is inserted into the baffle locking hole and the positioning hole to lock the limiting baffle (5) in the vertical position.

5. A belt winding and unwinding device for a coal mine storage bin according to claim 1, characterized in that, A diagonal brace (4) is provided between the bottom of the guide plate (3) and the load-bearing bottom frame (1). The diagonal brace (4), the guide plate (3), and the load-bearing bottom frame (1) together form a triangular support structure.

6. A belt winding and unwinding device for a coal mine storage bin according to claim 1, characterized in that, The idler assembly also includes an idler seat (9), which is disposed on the upper surface of two sides of the supporting base frame (1). At least two idler seats (9) are disposed on each side, and the idler seats (9) on the two sides are arranged opposite to each other. The idler (11) is mounted on the idler seats (9) on both sides.

7. A belt winding and unwinding device for a coal mine storage bin according to claim 6, characterized in that, The upper end of the idler seat (9) is provided with several slots (10) arranged in parallel. The slots (10) are used to place the idler shaft. By adjusting the position of the idler (11), it can be adapted to belt rolls of different diameters.

8. A belt winding and unwinding device for a coal mine storage bin according to claim 7, characterized in that, A pressure plate (12) is provided on the roller seat (9). The first end of the pressure plate (12) is hinged to one side of the roller seat (9). The second end of the pressure plate (12) is provided with a pressure plate locking hole. The roller seat (9) is provided with a seat locking hole at the position corresponding to the second end of the pressure plate (12). When the pressure plate (12) is flipped to a horizontal state, the pressure plate locking hole and the seat locking hole are aligned. The pressure plate pin (13) is inserted into the pressure plate locking hole and the seat locking hole to lock the pressure plate (12). The roller shaft is restricted in the slot (10).

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