Automatic coal cleaning device for tail of belt conveyor

Abstract

The utility model provides an automatic coal cleaning device at the tail of a belt conveyor, which is used for cleaning coal slag on a roller at the tail of the belt conveyor, the roller is arranged on a roller seat on a tail frame, and the roller comprises a coal scraping component and a coal discharging component. According to the automatic coal cleaning device at the tail of the belt conveyor, firstly, coal slag on a roller at the tail of the belt conveyor is scraped by a scraper in the coal scraping assembly, the scraped coal slag falls into a coal collecting groove below, then, a scraper in the coal discharging assembly is driven to do linear motion under the rotation of a ball screw, and the coal slag is discharged from the coal discharging assembly. The coal cinder in the coal collecting groove is discharged out of the conveyor, the purpose of automatically cleaning the coal cinder is achieved, manual cleaning is well replaced, and the safety of workers is guaranteed. Meanwhile, coal cinder on the tail roller can be treated in time, the conveying belt is effectively prevented from deviating, and safe production is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of coal mine production conveyors, and particularly relates to an automatic coal cleaning device for the tail of a belt conveyor. Background Technique

[0002] At present, most of the retractable belt conveyors used in fully mechanized coal mining faces have the following defects: First, the tail of the retractable belt conveyor moves frequently, and coal slag will accumulate at the tail roller, and it is necessary to arrange personnel to clean it regularly, which consumes manpower; Second, the tail of the retractable belt conveyor moves frequently. Uneven ground, deviation in the adjustment and installation position of the idlers, and changes in the position of the frame may all cause the conveyor belt to deviate and spill coal, which will stick to the drum skin as the drum rotates; Third, the retractable belt conveyor is generally used behind the transfer machine. Changes in the position of the transfer machine will cause the coal dropping point to deviate, and coal slag will fall on the lower conveyor belt. If it is not cleaned in time, coal slag will also stick to the drum, causing the conveyor belt to deviate.

[0003] Patent document CN203558497U provides a device for automatically cleaning the return coal at the tail of a belt conveyor, which includes a coal collecting trough fixedly arranged on the tail frame of the belt conveyor. Two supports are symmetrically and fixedly arranged on the bottom plate of the coal collecting trough. A spiral idler is arranged between the two supports. The cleaning device drives the spiral idler to rotate by the friction force of the belt on the belt conveyor, and continuously discharges the coal powder collected in the coal collecting trough outwards to achieve the effect of automatic cleaning. The disadvantage of this device is that when the coal powder collected in the coal collecting trough is discharged outwards, it may still fall on the lower conveyor belt surface, and it is still necessary to arrange personnel to clean the falling coal regularly. At the same time, in this patent, the conveyor belt drives the spiral idler to rotate through friction, which will damage the conveyor belt. Content of the Utility Model

[0004] Aiming at the deficiencies in the prior art, the purpose of the utility model is to provide an automatic coal cleaning device for the tail of a belt conveyor to solve the problem of coal slag appearing on the tail roller of the retractable belt conveyor due to frequent movement, automatically clean and transport the coal slag sticking to the tail roller out of the machine, realize the self-cleaning of the coal slag on the tail roller, and eliminate the need for manual shoveling, which is safe and reliable.

[0005] To achieve the above purpose, the solutions adopted by the utility model are as follows:

[0006] The utility model provides an automatic coal cleaning device for the tail of a belt conveyor, which is used to remove the coal slag on the tail roller of the belt conveyor. The roller is installed on a roller seat located on the tail frame, and includes:

[0007] The coal scraping assembly includes a coal collecting trough and a scraper. The coal collecting trough is of a long strip trough-shaped structure. The two ends of the coal collecting trough are installed on the tail frame, below the drum, and arranged parallel to the drum. The scraper is inclinedly arranged below the drum, with the blade edge of the scraper close to the surface of the drum, and the blade surface of the scraper forming an acute angle with the rear horizontal plane of the tail frame.

[0008] The coal discharging assembly includes a scraper, a guide rod, a ball screw, and a driving device for driving the ball screw to rotate. The guide rod and the ball screw are arranged in parallel, and both of their ends are fixed on the tail frame. The scraper is slidably penetrated through the guide rod and the ball screw. The rotation of the ball screw can drive the scraper to perform a linear motion under the guidance of the guide rod, and the shape of the lower edge of the scraper matches the shape of the notch of the coal collecting trough.

[0009] Preferably, the scraper is fixed in the coal collecting trough, and the length of the scraper is equal to the length of the coal collecting trough.

[0010] Preferably, the distance between the blade edge of the scraper and the surface of the drum is 1 - 2 mm.

[0011] Preferably, the lower part of the scraper has an inclined side, and the inclination angle of the inclined side is the same as the inclination angle of the blade surface of the scraper, so that the scraper will not touch the blade surface of the scraper during the linear motion.

[0012] Preferably, a tail guard is provided above the tail frame, and both ends of the guide rod and the ball screw of the coal discharging assembly are fixed on the tail guard.

[0013] Preferably, the driving device is connected to one end of the ball screw and fixed on the outside of the tail guard.

[0014] Beneficial effects

[0015] An automatic coal cleaning device for the tail of a belt conveyor provided by the present utility model includes a coal scraping assembly and a coal discharging assembly. First, the coal slag on the tail drum of the belt conveyor is scraped off by the scraper in the coal scraping assembly, and the scraped coal slag falls into the coal collecting trough below. Then, the scraper in the coal discharging assembly is driven to perform a linear motion by the rotation of the ball screw, and the coal slag in the coal collecting trough is discharged out of the conveyor, achieving the purpose of automatic coal slag cleaning, which well replaces manual cleaning and ensures the safety of the staff. At the same time, the coal slag on the tail drum can be processed in time, effectively preventing the belt from deviating and ensuring safe production. Description of the drawings

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the automatic coal cleaning device for the tail of the belt conveyor related to the present utility model.

[0017] Figure 2 This is a three-dimensional structural schematic diagram of the automatic coal cleaning device at the tail of a belt conveyor according to the present utility model, with the tail guard, drum seat, drum, and conveyor belt removed. Specific embodiments

[0018] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Apparently, the described embodiments are some, but not all, of the embodiments of the present utility model. Usually, the components of the embodiments of the present utility model described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0019] Therefore, the following detailed description of the embodiments of the present utility model provided in the drawings is not intended to limit the scope of the present utility model claimed, but merely represents selected embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the scope of protection of the present utility model.

[0020] It should be noted that: similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0021] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present utility model is customarily placed during use. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present utility model. In addition, the terms "first", "second", "third", etc. are only used for descriptive distinction and cannot be understood as indicating or implying relative importance.

[0022] In addition, terms such as "horizontal" and "vertical" do not mean that the components are required to be absolutely horizontal or hanging, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0023] In the description of the present utility model, it should also be noted that unless otherwise clearly specified and defined, the terms "arranged", "installed", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0024] For this reason, the following solutions are proposed:

[0025] Refer to Figure 1-2 , the present utility model provides an automatic coal cleaning device 10 for the tail of a belt conveyor, which is installed on the tail frame 20 of the belt conveyor and is used to remove the coal slag on the drum 22 fixed on the tail frame 20.

[0026] As Figure 1 、 Figure 2 shown, in the tail part of the belt conveyor, a drum seat 21 is fixedly installed on the tail frame 20, the drum 22 is installed on the drum seat 21, and the conveyor belt is wound around the drum 22. During the process of the belt conveyor transporting coal, the upper conveyor belt 23 at the tail moves in the left direction shown in Figure 1 , and the lower conveyor belt 24 moves in the right direction shown in Figure 1 , the drum 22 rotates counterclockwise. During the transportation process, due to reasons such as the deviation of the conveyor belt, coal blocks are scattered onto the upper end surface of the lower conveyor belt 24, resulting in the accumulation of coal slag on the surface of the drum 22.

[0027] Based on this, the present utility model provides an automatic coal cleaning device 10 for the tail of a belt conveyor that can remove the coal slag on the drum 22. The automatic coal cleaning device 10 for the tail of the belt conveyor includes a coal scraping assembly 11 and a coal discharging assembly 12.

[0028] Specifically, in the automatic coal cleaning device 10 for the tail of the belt conveyor of the present utility model, the coal scraping assembly 11 includes a coal collecting trough 111 and a scraper 112. Among them, the coal collecting trough 111 is of a long strip trough structure, and both ends of the coal collecting trough 111 are installed on the tail frame 20 and are located below the drum 22 and are arranged parallel to the drum 22. The scraper 112 is inclinedly arranged below the drum 22. In some embodiments, the scraper 112 is fixedly arranged in the coal collecting trough 111. The length of the scraper 112 is approximately equal to the length of the coal collecting trough 111. The cutting edge of the scraper 112 is arranged close to the surface of the drum 22, preferably 1 - 2 mm away from the surface of the drum 22. The length of the cutting edge of the scraper 112 should be approximately equal to the length of the drum 22. And, in some embodiments, the blade surface of the scraper 112 forms an acute angle with the rear horizontal plane of the tail frame 20, and the drum 22 is inFigure 1 During the counterclockwise rotation as shown, the inclined scraper 112 can scrape the cinder on the roller 22. Moreover, the scraped cinder then falls into the coal collecting trough 111, which can prevent the scraped cinder from falling onto the upper end surface of the lower conveyor belt 24 again, and can effectively remove the cinder on the roller 22.

[0029] Furthermore, in the automatic coal cleaning device 10 at the tail of the belt conveyor of the present utility model, the coal discharging assembly 12 includes a scraper 121, a guide rod 122, a ball screw 123, and a driving device 124 for driving the rotation of the ball screw 123. Among them, the guide rod 122 and the ball screw 123 are arranged in parallel, and both ends of them are fixed on the tail frame 20. The scraper 121 is slidably penetrated through the guide rod 122 and the ball screw 123. The ball screw 123 rotates under the drive of the driving device 124, and the rotation of the ball screw 123 can drive the scraper 121 to move linearly along the ball screw 123 under the guidance of the guide rod 122. In order to enable the scraper 121 to move smoothly linearly along the ball screw 123, in some preferred embodiments, two mutually parallel guide rods 122 are provided. And, the shape of the lower edge of the scraper 121 should match the shape of the notch of the coal collecting trough 111. In this way, when the coal collecting trough 111 accumulates cinder, the linear movement of the scraper 121 along the ball screw 123 can discharge the cinder in the coal collecting trough 111 outside the conveyor, achieving the purpose of automatically cleaning the cinder on the tail roller 22 of the belt conveyor.

[0030] In some embodiments, in the automatic coal cleaning device 10 at the tail of the belt conveyor of the present utility model, the lower part of the scraper 121 of the coal discharging assembly 12 has an inclined edge 121a, and the inclination angle of the inclined edge 121a is approximately the same as the inclination angle of the blade surface of the scraper 112 of the coal scraping assembly 11, so that the scraper 121 will not touch the blade surface of the scraper 112 during the linear movement.

[0031] In some embodiments, in the automatic coal cleaning device 10 at the tail of the belt conveyor of the present utility model, a tail guard 30 can also be provided above the tail frame 20, and both ends of the guide rod 122 and the ball screw 123 of the coal discharging assembly 12 are fixed on the tail guard 30. In the coal discharging assembly 12, the driving device 124 for driving the rotation of the ball screw 123 is connected to one end of the ball screw 123. In some embodiments, the driving device 124 is fixed on the outside of the tail guard 30.

[0032] The using process of the automatic coal cleaning device 10 at the tail of the belt conveyor of the present utility model is as follows:

[0033] An automatic coal cleaning device 10 for the tail of a belt conveyor provided by the utility model includes a coal scraping assembly 11 and a coal discharging assembly 12. First, the scraper in the coal scraping assembly 11 is used to scrape the coal slag on the tail roller of the belt conveyor. During the process of the roller 22 rotating counterclockwise as shown in Figure 1 , the inclined scraper 112 can scrape the coal slag on the roller 22. Moreover, the scraped coal slag then falls into the coal collecting tank 111 below and will not fall onto the upper surface of the conveyor belt 24 again. When the coal collecting tank 111 is relatively full of accumulated coal slag, the driving device 124 of the coal discharging assembly 12 is started. The ball screw 123 rotates under the drive of the driving device 124. The rotation of the ball screw 123 drives the scraper 121 to move linearly along the ball screw 123 under the guidance of the guide rod 122. The linear movement of the scraper 121 is used to discharge the coal slag in the coal collecting tank 111 out of the conveyor, automatically cleaning the coal slag adhered to the tail roller 22 and transporting it out of the conveyor, realizing the automatic cleaning of the coal slag on the tail roller of the belt conveyor.

[0034] The automatic coal cleaning device for the tail of the belt conveyor provided by the utility model has a compact structure. When it is observed that the coal collecting tank needs to be cleaned, only the driving device needs to be actuated, which is convenient to operate, reduces labor, and well replaces manual cleaning with an iron shovel, ensuring the safety of the staff and production safety.

[0035] The above is only the preferred embodiment of the utility model. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the principle of the utility model, several improvements and refinements can still be made, and these improvements and refinements should also be regarded as the protection scope of the utility model.

Claims

1. An automatic coal cleaning device for the tail of a belt conveyor, which is used to remove the coal slag on the tail roller of the belt conveyor. The roller is installed on a roller seat located on the tail frame, and is characterized in that, Comprising: A coal scraping assembly, including a coal collecting trough and a scraper. The coal collecting trough is of a long strip trough-shaped structure. The two ends of the coal collecting trough are installed on the tail frame, below the drum, and arranged parallel to the drum. The scraper is inclinedly arranged below the drum. The cutting edge of the scraper is close to the surface of the drum, and the blade surface of the scraper forms an acute angle with the rear horizontal plane of the tail frame. A coal discharging assembly, including a scraper, a guide rod, a ball screw, and a driving device for driving the ball screw to rotate. The guide rod and the ball screw are arranged in parallel, and both of their ends are fixed on the tail frame. The scraper is slidably penetrated through the guide rod and the ball screw. The rotation of the ball screw can drive the scraper to perform a linear motion under the guidance of the guide rod. The shape of the lower edge of the scraper coincides with the shape of the trough opening of the coal collecting trough.

2. The automatic coal cleaning device for the tail of the belt conveyor according to claim 1, wherein The scraper is fixed in the coal collecting trough, and the length of the scraper is equal to the length of the coal collecting trough.

3. The automatic coal cleaning device for the tail of the belt conveyor according to claim 1, characterized in that The cutting edge of the scraper is 1 - 2 mm away from the surface of the drum.

4. The automatic coal cleaning device for the tail of the belt conveyor according to claim 1, characterized in that The lower part of the scraper has an inclined side, and the inclination angle of the inclined side is the same as the inclination angle of the blade surface of the scraper, so that the scraper will not touch the blade surface of the scraper during the linear motion.

5. The automatic coal cleaning device for the tail of the belt conveyor according to claim 1, characterized in that, Above the tail frame, there is a tail protection cover, and both ends of the guide rod and the ball screw of the coal discharging assembly are fixed on the tail protection cover.

6. The automatic coal cleaning device for the tail of the belt conveyor according to claim 5, characterized in that, The driving device is connected to one end of the ball screw and fixed on the outer side of the tail protection cover.

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