Raw coal belt conveyor

Abstract

The utility model provides a raw coal belt conveyor, which relates to the technical field of belt conveyors and comprises a conveying device, a stand column and a weight box. According to the raw coal belt conveyor, when the belt load is increased and the risk of dead pressing or slipping stall occurs, water in the water tank is pumped into the weight box through the water inlet pipe, the weight of the weight box is increased, the sliding frame is pulled through the steel cable, the tension of the belt is increased, and the friction force between the belt and the first roller and the friction force between the belt and the second roller are increased; the belt conveyor can normally start and convey coal water, the weight of the weight box is accurately controlled by observing the height of the water level in the liquid level indicating pipe, and accurate adjustment of the belt tension is achieved. When the tensioning force of the belt needs to be reduced, the drainage valve is opened, water in the weight box is drained into the water tank through the drainage pipe, the weight of the weight box is reduced along with drainage of the water, the sliding frame slides in the direction close to the support under the elastic effect of the belt, the tensioning force of the belt is reduced, and the tensioning degree in the normal conveying state is restored.

Description

TECHNICAL FIELD

[0001] The utility model relates to a belt conveyor technical field especially relates to a raw coal belt conveyor. BACKGROUND

[0002] In the field of coal mining and transportation, the raw coal belt conveyor as important conveying equipment realizes long-distance and large-batch transportation of raw coal through the continuous operation of the belt. However, in the actual production process, the raw coal belt conveyor often faces many problems. When encountering water coal, due to the significant increase in the weight of water coal and the change in fluidity, the load of the belt conveyor increases significantly, and the belt is easily crushed. At the same time, under the heavy load state, the belt itself will produce elastic deformation due to bearing large tension, and the presence of water coal makes the deformation of the belt more complex, which will lead to the decrease of the adhesion between the belt and the transmission drum, the decrease of the contact area, and thus the decrease of the friction, resulting in the slip and stall of the belt, and the belt cannot start normally.

[0003] To solve the above problems, the belt can be tensioned as a response. The principle is to increase the tension of the belt, increase the pressure between the belt and the transmission drum, and thus increase the friction to meet the heavy load transportation and starting requirements. SUMMARY

[0004] The utility model provides a kind of raw coal belt conveyor, solve the problem that the deformation of belt described in above background technique can lead to the decrease of friction between belt and transmission drum, cause the slip and stall of belt.

[0005] To achieve the above purpose, the utility model provides the following technical scheme: a kind of raw coal belt conveyor, including conveying device, stand and counterweight box, the conveying device includes support, slide and belt, the upper end of the support is rotatably connected with drum one, the side of the support is provided with the slide, the upper end of the slide is rotatably connected with drum two, belt is arranged on the drum one and drum two, the lower end of the slide is provided with bottom plate, the slide is slidably connected on the bottom plate, the end of the slide away from the support is provided with two stands, pulley one is rotatably connected between two stands, steel cable is fixedly connected on the slide, the upper end of pulley one is passed by the steel cable, the counterweight box is fixed on the free end of the steel cable, liquid level indicating tube is fixedly connected on the outer side of the counterweight box.

[0006] Preferably, the bottom of the stand is fixedly connected with side frame on one side, pulley two is rotatably connected on the side frame, and the lower end of pulley two is passed by the steel cable.

[0007] Preferably, pulley two is located below pulley two.

[0008] Preferably, a slide rail is fixedly connected to the other side of the column, and the counterweight box is slidably connected to the column through the slide rail.

[0009] Preferably, the interior of the counterweight box is hollow, and the bottom of the liquid level indicator tube is located at the bottom of the interior of the counterweight box.

[0010] Preferably, the portion of the liquid level indicator tube located outside the counterweight box is vertically upward, and scale lines are provided on the outer peripheral side of the liquid level indicator tube.

[0011] Preferably, the upper surface of the counterweight box has an opening, and the upper end of the liquid level indicator tube is open.

[0012] Preferably, a drain valve is provided at the lower end of the counterweight box, and a drain pipe is connected to the lower end of the drain valve. A water tank is provided on one side of the column, and the free end of the drain pipe extends into the interior of the water tank.

[0013] Preferably, a pipe opening is provided on one side of the passage, and the pipe opening is fixed on the counterweight box.

[0014] Preferably, a water inlet pipe is fixedly connected to the inlet, and a water pump is installed at the free end of the water inlet pipe, with the water pump located inside the water tank.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] When encountering water-coal transport conditions, and the belt load increases, posing a risk of jamming or slippage and stalling, the water pump is started to draw water from the water tank into the counterweight box through the inlet pipe. The increased weight of the counterweight box, via steel cables, pulls the slide, increasing the belt tension and enhancing the friction between the belt and rollers one and two, allowing the belt conveyor to start and transport water and coal normally. The bottom of the liquid level indicator tube is connected to the bottom of the counterweight box. Located vertically on the outside of the counterweight box, it features graduated lines. Operators can visually understand the water level in the counterweight box by observing the water level in the indicator tube, thus precisely controlling the weight of the counterweight box and accurately adjusting the belt tension. When water-coal transport ends and the belt tension needs to be reduced, the drain valve is opened, and the water in the counterweight box is drained into the water tank through the drain pipe. As the water drains, the weight of the counterweight box decreases, and the slide, under the elastic force of the belt, slides closer to the support, reducing the belt tension and restoring it to the tension level under normal transport conditions. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the raw coal belt conveyor of this utility model;

[0018] Figure 2 This is a side view of the raw coal belt conveyor of this utility model;

[0019] Figure 3 This is a structural diagram showing the installation position of the water tank in this utility model;

[0020] Figure 4 This is a schematic diagram of the counterweight box structure of this utility model.

[0021] The following are the labels in the diagram: 1. Support frame; 11. Roller 1; 12. Motor; 2. Slide; 21. Base plate; 22. Roller 2; 3. Belt; 4. Column; 41. Pulley 1; 42. Slide rail; 5. Side frame; 51. Pulley 2; 6. Steel cable; 7. Counterweight box; 71. Drain valve; 72. Drain pipe; 73. Inlet; 74. Pipe opening; 75. Inlet pipe; 76. Water pump; 8. Liquid level indicator; 9. Water tank. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0023] This utility model provides a raw coal belt conveyor, such as Figure 1 and Figure 2 As shown, the device includes a conveying device, a column 4, and a counterweight box 7. The conveying device includes a support 1, a slide 2, and a belt 3. A roller 11 is rotatably connected to the upper end of the support 1. The slide 2 is set on one side of the support 1. A roller 22 is rotatably connected to the upper end of the slide 2. The belt 3 is set on the roller 11 and the roller 22. A base plate 21 is set at the lower end of the slide 2. The slide 2 is slidably connected to the base plate 21. The sliding connection between the slide 2 and the base plate 21 allows the slide 2 to move flexibly within a certain range. This design provides convenience for adjusting the tension of the belt 3. By changing the position of the slide 2, the tension of the belt 3 can be effectively adjusted to adapt to the transportation needs under different working conditions. Two columns 4 are installed at the end of the carriage 2 furthest from the support 1. A pulley 41 is rotatably connected between the two columns 4. A steel cable 6 is fixedly connected to the carriage 2, passing over the upper end of the pulley 41. A counterweight box 7 is fixed to the free end of the steel cable 6, and a liquid level indicator tube 8 is fixedly connected to the outer surface of the counterweight box 7. The hollow structure design of the counterweight box 7 allows it to flexibly adjust its weight according to actual needs. By injecting or discharging water, its own gravity is changed, thereby achieving precise control of the tension of the belt 3. Its connection with the steel cable 6 and the carriage 2 is reasonable, and it can accurately transmit its own gravity to the carriage 2, achieving effective adjustment of the tension of the belt 3.

[0024] A motor 12 is fixedly connected to the side of the support 1. The output shaft of the motor 12 is fixed to the drum 11, which can drive the drum 11 to rotate, so that the belt 3 can transport raw coal.

[0025] like Figure 2 As shown, a side frame 5 is fixedly connected to the bottom of one side of the column 4. A pulley 51 is rotatably connected to the side frame 5, and the steel cable 6 passes over the lower end of the pulley 51. The pulley 51 is located below the pulley. The arrangement of pulleys 41 and 51 changes the direction of force on the steel cable 6, while reducing friction between the steel cable 6 and other components, reducing energy loss, and improving the transmission efficiency of the entire system. A slide rail 42 is fixedly connected to the other side of the column 4, and the counterweight box 7 is slidably connected to the column 4 via the slide rail 42. The slidable connection between the counterweight box 7 and the column 4 via the slide rail 42 ensures its stable movement in the vertical direction, avoids shaking or deviation during adjustment, and improves the accuracy and stability of adjustment.

[0026] like Figure 4 As shown, the interior of the counterweight box 7 is hollow, and the bottom of the liquid level indicator tube 8 is located at the bottom of the interior of the counterweight box 7. The portion of the liquid level indicator tube 8 located on the outside of the counterweight box 7 is vertically upward, and scale lines are provided on the outer circumferential side of the liquid level indicator tube 8. An opening 73 is provided on the upper surface of the counterweight box 7, and the upper end of the liquid level indicator tube 8 is open, forming a communicating vessel structure with the counterweight box 7. When water is injected into the counterweight box 7, the water fills the space of the counterweight box 7 under the action of gravity. Due to the principle of communicating vessels, the water level in the liquid level indicator tube 8 will rise synchronously with the water level in the counterweight box 7; conversely, when the drain valve 71 is opened to drain the water from the counterweight box 7, the water level in the liquid level indicator tube 8 will also drop accordingly. Because the liquids inside the two are connected and are under the same atmospheric pressure, as long as the water volume in the counterweight box 7 changes, the water level in the liquid level indicator tube 8 will be reflected in real time and accurately. By observing the water level height on the scale line on the outside of the liquid level indicator tube 8, the operator can intuitively and accurately know the water volume in the counterweight box 7, and thus determine the weight of the counterweight box 7.

[0027] like Figure 3As shown, a drain valve 71 is installed at the lower end of the counterweight box 7, and a drain pipe 72 is connected to the lower end of the drain valve 71. A water tank 9 is installed on one side of the column 4, and the free end of the drain pipe 72 extends into the interior of the water tank 9. A pipe opening 74 is installed on one side of the port 73 and is fixed to the counterweight box 7. A water inlet pipe 75 is fixedly connected to the pipe opening 74, and a water pump 76 is installed at the free end of the water inlet pipe 75, which is located inside the water tank 9. The drain valve 71 can quickly and effectively drain the water in the counterweight box 7, thereby reducing the weight of the counterweight box 7. The drain pipe 72 introduces the drained water into the water tank 9, realizing the recycling of water resources and reducing operating costs. The combination of the pipe opening 74, the water inlet pipe 75, and the water pump 76 can promptly pump water from the water tank 9 into the counterweight box 7, increasing the weight of the counterweight box 7.

[0028] Using this utility model, such as Figure 1 and Figure 2 As shown, during initial installation, bracket 1 is securely installed on the designated path for raw coal transportation. Raw coal falls onto belt 3, and slide 2, through its sliding connection with base plate 21, can move within a certain range in a specific direction. This design allows for subsequent adjustment of belt 3 tension. When encountering water-coal transportation conditions, the load on belt 3 increases, posing a risk of jamming or slippage and stalling. In such cases, water pump 76 is started, pumping water from water tank 9 into counterweight box 7 via inlet pipe 75. The increased weight of counterweight box 7 pulls slide 2 via steel cable 6, increasing belt 3 tension and enhancing friction between belt 3 and rollers 11 and 22, enabling belt 3 conveyor to start normally and transport water-coal. The bottom of the liquid level indicator tube 8 is connected to the bottom of the counterweight box 7. It is vertically positioned on the outside of the counterweight box 7 and features graduated lines. Operators can visually understand the water level in the counterweight box 7 by observing the water level in the indicator tube 8, thus precisely controlling the weight of the counterweight box 7 and accurately adjusting the tension of the belt 3. When water and coal transportation ends and the tension of the belt 3 needs to be reduced, the drain valve 71 is opened, and the water in the counterweight box 7 is drained into the water tank 9 through the drain pipe 72. As the water is drained, the weight of the counterweight box 7 decreases, and the slide 2 slides closer to the support 1 under the elastic action of the belt 3. The tension of the belt 3 decreases, restoring it to the tension level under normal transportation conditions.

[0029] Although the embodiments of this utility model have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for this utility model. For those skilled in the art, other modifications can be easily made. Therefore, without departing from the general concept defined by the claims and their equivalents, this utility model is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A raw coal belt conveyor, characterized in that, The system includes a conveying device, a column (4), and a counterweight box (7). The conveying device includes a support (1), a carriage (2), and a belt (3). A first roller (11) is rotatably connected to the upper end of the support (1). The carriage (2) is arranged on one side of the support (1). A second roller (22) is rotatably connected to the upper end of the carriage (2). A belt (3) is arranged on the first roller (11) and the second roller (22). A base plate (21) is arranged at the lower end of the carriage (2). 2) Sliding connection on the base plate (21), the slide (2) is provided with two columns (4) at the end away from the support (1), and a pulley (41) is rotatably connected between the two columns (4). A steel cable (6) is fixedly connected to the slide (2), and the steel cable (6) passes over the upper end of the pulley (41). The counterweight box (7) is fixed on the free end of the steel cable (6), and a liquid level indicator tube (8) is fixedly connected to the outer side of the counterweight box (7).

2. The raw coal belt conveyor according to claim 1, characterized in that, A side frame (5) is fixedly connected to the bottom of one side of the column (4), and a pulley (51) is rotatably connected to the side frame (5). The steel cable (6) passes over the lower end of the pulley (51).

3. The raw coal belt conveyor according to claim 2, characterized in that, The second pulley (51) is located below the second pulley (51).

4. The raw coal belt conveyor according to claim 1, characterized in that, A slide rail (42) is fixedly connected to the other side of the column (4), and the counterweight box (7) is slidably connected to the column (4) through the slide rail (42).

5. The raw coal belt conveyor according to claim 1, characterized in that, The interior of the counterweight box (7) is hollow, and the bottom of the liquid level indicator tube (8) is located at the bottom of the interior of the counterweight box (7).

6. The raw coal belt conveyor according to claim 5, characterized in that, The liquid level indicator tube (8) is vertically positioned on the outside of the counterweight box (7), and scale lines are provided on the outer peripheral side of the liquid level indicator tube (8).

7. The raw coal belt conveyor according to claim 1, characterized in that, The upper surface of the counterweight box (7) is provided with an opening (73), and the upper end of the liquid level indicator tube (8) is open.

8. The raw coal belt conveyor according to claim 7, characterized in that, The lower end of the counterweight box (7) is provided with a drain valve (71), and the lower end of the drain valve (71) is connected to a drain pipe (72). A water tank (9) is provided on one side of the column (4), and the free end of the drain pipe (72) extends into the interior of the water tank (9).

9. The raw coal belt conveyor according to claim 8, characterized in that, A pipe opening (74) is provided on one side of the opening (73), and the pipe opening (74) is fixed on the counterweight box (7).

10. The raw coal belt conveyor according to claim 9, characterized in that, A water inlet pipe (75) is fixedly connected to the pipe opening (74), and a water pump (76) is provided at the free end of the water inlet pipe (75). The water pump (76) is located inside the water tank (9).

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