Novel main vertical shaft bottom scattered coal cleaning device

Abstract

The utility model relates to a novel main vertical shaft bottom scattered coal cleaning device, and belongs to the technical field of mine electromechanical transportation. Two rectangular ventilation openings are formed in the upper portion of the coal collecting hopper, an electro-hydraulic flashboard gate is arranged below the coal collecting hopper, a support is arranged on the upper portion of the coal collecting hopper and fixed to the well wall, a support is arranged on the lower portion of the coal collecting hopper and fixed to the well bottom, a weighing sensor is installed on the support to sense the overall weight of the coal hopper, and a scraper conveyor is arranged below the electro-hydraulic flashboard gate and can convey scattered coal collected in the coal hopper to the head. Falling into a mine car. The device realizes automatic collection and loading of scattered coal, and compared with a traditional scraper bucket type rock loading machine, scattered coal cleaning is more thorough; meanwhile, manual operation is reduced, and the safety of scattered coal cleaning work is improved; the coal collecting hopper is composed of a plurality of structures which are connected through bolts and are convenient to install and replace. The coal collecting funnel is provided with a ventilation opening to guarantee ventilation of the well bottom cleaning coal scattering chamber.

Description

Technical Field

[0001] The utility model relates to a novel main shaft bottom cleaning and coal spreading device, belonging to the technical field of mine electromechanical transportation. Background Art

[0002] At present, a coal-cleaning and spreading chamber is set up at the bottom of the main shaft to pile up a small amount of coal scattered during the loading and unloading and lifting process of the skip bucket. A rake bucket type rock loader is arranged in the coal-cleaning and spreading chamber. The rake bucket rakes the coal into the trough, and the coal is unloaded into the mine car from the discharge port of the trough, thereby achieving the purpose of coal loading.

[0003] The scattered coal falls directly into the bottom of the well without any protective measures. To prevent people from being hit by falling objects, the cleaning of the scattered coal is only allowed to be carried out in the maintenance team. It is difficult to clean the scattered coal at the bottom of the well in one go with a bucket-type rock loader, and manual cleaning is required. The bucket of the rock loader easily rubs against the ground to produce sparks, and is not suitable for areas with high concentrations of gas or coal dust. There is also the risk of the traction wire rope breaking. Using a bucket-type rock loader to clean the scattered coal poses a safety hazard, has low loading efficiency, and high labor intensity, and needs to be improved urgently. Summary of the invention

[0004] In order to make up for the deficiencies of the prior art, the utility model provides a novel main shaft bottom cleaning and coal spreading device.

[0005] In order to achieve the above object, the utility model is implemented by adopting the following technical solutions:

[0006] A new type of main shaft bottom cleaning coal spreading device, the device body includes a coal collecting funnel, a scraper conveyor, a gravity sensor, and a controller. The upper part of the coal collecting funnel is provided with two chimney-type vents, and an electro-hydraulic gate is provided below. The outer side of the coal collecting funnel is provided with an upper bracket and a lower bracket, the upper bracket is fixed to the shaft wall, and the lower bracket is fixed to the shaft bottom. The electro-hydraulic gate includes an electro-hydraulic push rod and a gate. The scraper conveyor is located below the gate. The gravity sensor is arranged at the connection between the upper bracket, the lower bracket and the coal collecting funnel. The signal output end of the gravity sensor is connected to the input end of the controller, and the signal output end of the controller is connected to the electro-hydraulic push rod and the scraper conveyor switch. The scraper conveyor is located below the electro-hydraulic gate and is supported by a gantry leg. The mine car can enter below the scraper conveyor. The scraper conveyor transports the fallen coal to the head and falls into the mine car.

[0007] Preferably, the cross-sectional shape of the coal collecting funnel is a smooth transition from a circular upper part to a square lower part, the diameter of the upper circle is equivalent to the inner diameter of the wellbore, and the shape and size of the lower square are equivalent to the gate. The coal collecting funnel comprises a plurality of funnel plates, and transverse ribs and longitudinal ribs are arranged on the outer walls of the funnel plates. Bolt holes are preset on the edges of the longitudinal ribs, and are fixedly connected by bolts.

[0008] Preferably, the electro-hydraulic plug gate is square in shape, with a coal collecting hopper connected to the upper part and a scraper conveyor connected to the lower part. The size of the gate matches the shape and size of the coal inlet of the scraper conveyor tail.

[0009] Preferably, the scraper conveyor is located below the electro-hydraulic plug gate and extends to the loading area of the mine car at the bottom coal dropping and cleaning chamber. The scraper conveyor is installed on the portal legs.

[0010] Compared with the prior art, the advantages and positive effects of the present utility model are as follows:

[0011] With the device of the present utility model, when the main vertical shaft is hoisted, the scattered coal does not touch the ground and can be directly stored in the coal collecting hopper, realizing automatic collection and loading, and the coal dropping cleaning is more thorough than that of the traditional scraper loader; at the same time, the manual operation is reduced, and the safety of the coal dropping cleaning work is improved; the coal collecting hopper is composed of multiple sheets and is connected by bolts, which is convenient for installation and replacement; the coal collecting hopper is provided with a ventilation port to ensure the ventilation of the bottom coal dropping and cleaning chamber. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a sectional view of the device of the present utility model.

[0013] Figure 2 It is a schematic structural diagram of the square-round coal collecting hopper.

[0014] Figure 3 It is a schematic structural diagram of the electro-hydraulic plug gate.

[0015] Each reference numeral is: 1 shaft, 2 coal collecting hopper, 3 ventilation port, 4 upper support, 5 transverse rib plate, 6 lower support, 7 plug gate, 8 electro-hydraulic push rod, 9 motor, 10 scraper conveyor. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0016] In order to more clearly understand the above objects, features and advantages of the present utility model, the following further describes the present utility model with reference to the drawings and embodiments. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0017] In the following description, many specific details are set forth to fully understand the present utility model. However, the present utility model can also be implemented in other ways different from those described herein. Therefore, the present utility model is not limited by the specific embodiments disclosed in the following specification.

[0018] Embodiment 1

[0019] The drawings are a specific embodiment of the present utility model, such as Figures 1-3As shown in the figure. The whole set of equipment is located at the lower part of the shaft 1 of the mine. During the loading, unloading and hoisting of the mine skip, a small amount of coal will be scattered. The flap gate 7 is in the closed state, and the coal collecting funnel 2 will collect the fallen coal. In order to maintain the ventilation of the coal cleaning chamber at the bottom of the shaft, a ventilation opening 3 is opened on the coal collecting funnel 2, as Figure 2 shown, Figure 2 There are two ventilation openings 3 provided, and the two ventilation openings 3 are of chimney type and face the inside of the coal collecting funnel. In order to facilitate installation, maintenance and replacement, the coal collecting funnel 2 is a structure in which multiple funnel plates are connected and fixed by bolts, as Figure 2 shown. In order to increase the overall strength of the coal collecting funnel 2, transverse rib plates 5 and longitudinal rib plates are also provided on the outer wall of the coal collecting funnel 2, and brackets are provided at both the upper and lower parts to support the funnel. Among them, the upper bracket 4 is installed and fixed on the inner wall of the mine, and the lower bracket 6 is installed and fixed on the bottom of the mine. The fixing method is welding or bolt connection. The electro-hydraulic flap gate is below the coal collecting funnel 2. The electro-hydraulic flap gate mainly includes a motor 9, an electro-hydraulic push rod 8 and a flap gate 7. The gravity sensor can be set above the flap gate or at the installation positions of the upper and lower brackets, and is used to weigh the amount of coal blocks falling on the flap gate 7. When the coal blocks are large or the coal dropping height is high, in order to prevent the fallen coal blocks from damaging the gravity sensor, the gravity sensor can be set at the position where the upper bracket 4, the lower bracket 6 are connected to the coal collecting funnel, and the change of the force of the whole coal collecting funnel on the two brackets is used to monitor the coal dropping amount. Taking the upper bracket 4 as an example, a connecting plate can be fixed on the shaft wall, the lower part of the upper bracket 4 is designed as a plane, and the gravity sensor is set between the connecting plate and the lower bottom plate of the upper bracket 4. The upper and lower brackets and the sensor can be commercially available and customized, which will not be elaborated here. The position of the controller is not restricted. It can be located in the chamber. The signal output end of the gravity sensor is connected to the input end of the controller, and the signal output end of the controller is connected to the electro-hydraulic push rod and the scraper conveyor switch. The electro-hydraulic flap gate is connected to the coal collecting funnel by bolts. A scraper conveyor 10 is provided below the flap gate 7, and the scraper conveyor 10 extends to the loading place of the mine car in the coal cleaning chamber at the bottom of the shaft. As Figure 2 shown, the lower bracket 6 includes a cross bar for supporting the coal collecting funnel 2 horizontally, and a connecting plate for fixing the motor 9 between the cross bars. The lower bracket also includes a portal leg perpendicular to the cross bar. The scraper conveyor is installed on the portal leg of the lower bracket 6, and the mine car receives coal below the head of the scraper conveyor 10.

[0020] The coal collecting funnel 2 with a gravity sensor can measure the overall weight of the coal hopper. When the weight of the coal in the coal hopper reaches a certain value, the gravity sensor sends a signal to the controller, and the system sends a prompt signal. The staff drives the mine car group below the head of the scraper conveyor 10. The scraper conveyor 10 starts to run, and then the flap gate 7 is opened. The coal in the coal hopper falls onto the scraper conveyor 10, is transported to the head and falls into the mine car. After the coal transportation is completed, the flap gate 7 is closed, and the scraper conveyor 10 stops running after running for a period of time.

[0021] The cross-sectional shape of the coal collecting hopper 2 is a circle at the upper part that smoothly transitions to a square at the lower part. The diameter of the upper circle is equivalent to the inner diameter of the shaft, and the shape and size of the lower square are equivalent to those of the flap gate 7. For the convenience of installation, several upper brackets 4 are provided and distributed in an annular and equidistant manner. The upper brackets 4 are installed on the shaft wall, and the lower brackets 6 are fixed to the bottom of the shaft. This embodiment will not be elaborated here.

[0022] For the parts not specially described in this embodiment, conventional parts or settings in the coal mining process are adopted. Parts such as the flap gate 7, electro-hydraulic push rod 8, motor 9, scraper conveyor 10, and gravity sensor can be commercially available and customized.

[0023] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention in other forms. Any person skilled in the art may use the disclosed technical content to make changes or modifications into equivalent embodiments with equivalent changes and apply them to other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the technical solution content of the present invention still fall within the protection scope of the technical solution of the present invention.

Claims

1. A new type of device for cleaning and removing spilled coal at the bottom of the main vertical shaft, including the device body, characterized in that, The device body includes a coal collecting hopper, a scraper conveyor, a gravity sensor, and a controller. Two ventilation openings are provided at the upper part of the coal collecting hopper, and an electro-hydraulic plug gate is provided at the lower part. An upper support and a lower support are arranged outside the coal collecting hopper. The upper support is fixed to the shaft wall, and the lower support is fixed to the bottom of the shaft. The electro-hydraulic plug gate includes an electro-hydraulic push rod and a plug gate; the scraper conveyor is located below the plug gate. The gravity sensor is arranged at the connection of the upper support, the lower support and the coal collecting hopper. The signal output end of the gravity sensor is connected to the input end of the controller, and the signal output end of the controller is connected to the electro-hydraulic push rod and the switch of the scraper conveyor.

2. The novel main shaft bottom coal cleaning and spreading device according to claim 1, characterized in that, The cross-sectional shape of the coal collecting hopper is circular at the upper part and square at the lower part. The diameter of the upper circular cross-section is the same as the inner diameter of the shaft, and the lower square is the same size as the plug gate. The coal collecting hopper comprises a number of hopper plates, and transverse ribs and longitudinal ribs are arranged on the outer wall of the hopper plates. Bolt holes are pre-opened at the edge positions of the longitudinal ribs and are fixedly connected by bolts.

3. The novel device for cleaning and removing spilled coal at the bottom of the main vertical shaft according to claim 1, characterized in that, The size of the plug gate matches the size of the coal inlet at the tail of the scraper conveyor.

4. The novel main shaft bottom coal cleaning and spreading device according to claim 1, wherein, The scraper conveyor extends to the loading place of the mine car in the coal cleaning chamber at the bottom of the shaft. The lower support includes portal legs, and the scraper conveyor is installed on the portal legs.

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