Automatic continuous cleaning device for bottom drum coal body of coal mine mining roadway

Abstract

The invention discloses an automatic continuous cleaning device for a bottom drum coal body of a coal mine stoping roadway, which comprises a cleaning conveyor arranged on a rubber belt conveyor rack and positioned below a rubber belt conveyor and a control system arranged in the roadway, and the conveying direction below the cleaning conveyor is from back to front. A plurality of groups of cleaning assemblies for cleaning the floor drum are arranged on the cleaning conveyor at intervals, and the control system is electrically connected with the cleaning conveyor and the cleaning assemblies and is used for controlling the cleaning conveyor and the cleaning assemblies to work cooperatively, so that automatic and continuous floor drum cleaning of the whole device is realized. The whole device is arranged on the machine frame of the rubber belt conveyor and located below a coal rock conveying frame, mechanical cleaning of the floor heave below the rubber belt conveyor can be achieved, and normal work of the rubber belt conveyor cannot be affected. Meanwhile, the whole device is arranged below the coal rock conveying frame, no extra roadway space needs to be occupied, the space is saved, and the installation flexibility of the device is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of tunnel floor drum cleaning, and in particular relates to an automatic and continuous cleaning device for the floor drum coal body of a coal mine mining tunnel. Background Art

[0002] After the coal mine tunnel is excavated, the shallow surrounding rock changes from the original three-dimensional stress state to a two-dimensional stress state, and the tunnel becomes a space for stress release. At the same time, under the influence of various factors such as mining disturbance, the cross-section of the mining tunnel shrinks sharply, and it is very easy to have floor drum and other phenomena. Since the floor drum will interfere with the normal coal mining of the working face after it is serious, it is necessary to clean the floor drum.

[0003] There are currently two ways to clean the bottom drum. One is full manual cleaning, which requires more manpower, not only increasing labor costs, but also high labor intensity and low production efficiency. The other is to use a small excavator for cleaning. Since the cross-section of the mining tunnel itself is small, cleaning the bottom drum affects the operation of equipment such as the transfer machine and belt conveyor and the erection of single pillars, so it is necessary to suspend the mining of the working face, reducing the production efficiency of the mine. At the same time, the above two methods of cleaning the bottom drum are also difficult to achieve continuous operation. Generally, the bottom drum is cleaned only when it is serious, which affects the safe production of the working face. Summary of the invention

[0004] The present invention proposes an automatic continuous cleaning device for the floor drum of a coal mine recovery roadway, which can realize mechanized floor drum cleaning without affecting coal mining.

[0005] To this end, the technical solution adopted by the present invention is: an automatic and continuous cleaning device for the bottom drum of coal in a coal mine recovery tunnel, comprising a cleaning conveyor arranged on a belt conveyor frame and located below the belt conveyor and a control system arranged in the tunnel, the conveying direction below the cleaning conveyor is from back to front, and a plurality of groups of cleaning components for cleaning the bottom drum are arranged at intervals on the cleaning conveyor, and the control system is electrically connected to the cleaning conveyor and the cleaning components, and is used to control the coordinated work of the cleaning conveyor and the cleaning components, thereby realizing automatic and continuous bottom drum cleaning of the entire device.

[0006] As a preferred embodiment of the above scheme, the cleaning component includes a crushing component and a recovery component arranged at intervals in front and behind, the crushing component is used to crush the bottom drum located below the belt conveyor, and the recovery component is used to recover the bottom drum after crushing, and the cleaning component also includes a limit component arranged corresponding to the crushing component and the recovery component, the limit component can not only prevent the crushing component and the recovery component from damaging the belt conveyor, but also prevent the crushing component and the recovery component from rotating backwards, and the crushing component and the recovery component are arranged in the limit component.

[0007] Further preferably, the crushing assembly includes a crushing telescopic cylinder, the output end of the crushing telescopic cylinder is provided with a crushing shaft matching the width of the cleaning conveyor, the crushing shaft is provided with a cutter for crushing the bottom drum below the belt conveyor, the crushing shaft is provided with a crushing motor for realizing the rotation of the crushing shaft, the fixed end of the crushing telescopic cylinder is hingedly arranged on the limit assembly, and the limit assembly is provided with a crushing rotating motor for driving the crushing telescopic cylinder to rotate.

[0008] Further preferably, the recovery component includes a recovery telescopic cylinder, the output end of the recovery telescopic cylinder is provided with a recovery bucket matching the width of the belt conveyor, the lower end of the recovery bucket is provided with an anti-retention slope inclined forward and downward, the fixed end of the recovery telescopic cylinder is hingedly provided on a limit assembly, and the limit assembly is provided with a recovery rotating motor for driving the recovery telescopic cylinder to rotate.

[0009] Further preferably, the limit assembly includes a limit mounting plate arranged on the cleaning conveyor, and the first limit block and the second limit block are arranged on the limit mounting plate at a front and rear interval, and the crushing assembly and the recovery assembly are located between the corresponding first limit block and the second limit block, and the side of the first limit block close to the crushing assembly and the recovery assembly is set to a contact inclined surface, and the first limit block is used to ensure that the crushing assembly and the recovery assembly do not affect the belt conveyor when the cleaning assembly is above the cleaning conveyor, and the side of the second limit block close to the crushing assembly and the recovery assembly is set to a vertical surface, which is used to ensure that the crushing assembly and the recovery assembly do not rotate backward under the reaction force of the bottom drum when the cleaning assembly is below the cleaning conveyor.

[0010] Further preferably, the control system includes a detection sensor arranged in the lane, a cleaning controller and a cleaning position sensor arranged corresponding to each cleaning component, and a master controller for realizing automatic continuous cleaning, the detection sensor is used to detect the height of the bottom drum under the belt conveyor, and the detection sensor, the cleaning controller and the cleaning position sensor are all electrically connected to the master controller, the cleaning controller is used to control the cleaning component to be in a working or non-working state, the cleaning position sensor is used to detect the position of the corresponding cleaning component on the cleaning conveyor, the master controller can realize the operation of the cleaning conveyor according to the signal received from the detection sensor, and at the same time judge whether the corresponding cleaning controller controls the operation of the cleaning component according to the position signal of the cleaning position sensor.

[0011] Further preferably, when the height of the bottom drum under the belt conveyor does not reach a predetermined height, the entire cleaning device does not work; when the height of the bottom drum under the belt conveyor reaches a predetermined height, the control system controls the cleaning conveyor to work, and at the same time, the first cleaning component that reaches the rear end of the cleaning conveyor from the top of the cleaning conveyor starts working with a designed initial cleaning depth, and the subsequent cleaning components that reach the rear end of the cleaning conveyor from the top of the cleaning conveyor start working with the cleaning depth increasing sequentially according to the design, and when the cleaning depth of the subsequent cleaning component reaches the maximum, the cleaning component located behind the cleaning component does not work, and at the same time, when the cleaning component with the maximum cleaning depth reaches the top of the cleaning conveyor, the entire cleaning device stops working.

[0012] The beneficial effects of the present invention are as follows: the entire device is arranged on the frame of the belt conveyor and is located below the coal and rock conveyor frame. It can not only realize the mechanized cleaning of the bottom drum below the belt conveyor, thereby reducing manpower, improving cleaning efficiency, and reducing the safety risks brought by manual operation, but also will not affect the normal operation of the belt conveyor, that is, the cleaning work and the transportation system can be carried out simultaneously, thereby ensuring the continuous operation of the mine transportation system; at the same time, the entire device is arranged below the coal and rock conveyor frame, without occupying additional tunnel space, which not only saves space but also improves the installation flexibility of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the present invention.

[0014] Figure numbers: belt conveyor-A, cleaning conveyor-B, cleaning assembly-C, crushing telescopic cylinder-1, crushing shaft-2, cutter-3, recovery telescopic cylinder-4, recovery bucket-5, limit mounting plate-6, first limit block-7, second limit block-8. DETAILED DESCRIPTION

[0015] The present invention will be further described below by way of embodiments and in conjunction with the accompanying drawings:

[0016] like Figure 1 As shown, an automatic continuous cleaning device for the floor drum of coal in a coal mining roadway is mainly composed of a cleaning conveyor B, a cleaning component C and a control system, wherein the cleaning conveyor B is arranged on the frame of the belt conveyor A and is located below the belt conveyor A, and the conveying direction below the cleaning conveyor B is from back to front. The cleaning component C is provided with a plurality of groups and is arranged at intervals on the cleaning conveyor B. The control system is electrically connected to the cleaning conveyor B and the cleaning component C, and is used to control the coordinated work of the cleaning conveyor B and the cleaning component C, so as to realize automatic and continuous floor drum cleaning of the entire device.

[0017] The cleaning component C includes a crushing component and a recycling component arranged at intervals in front and back, wherein the crushing component is used to crush the bottom drum located below the belt conveyor, and the recycling component is used to realize the recycling of the bottom drum after crushing. At the same time, the cleaning component also includes a limit component corresponding to both the crushing component and the recycling component, which can not only prevent the crushing component and the recycling component from damaging the belt conveyor, but also prevent the crushing component and the recycling component from rotating backwards, and the crushing component and the recycling component are arranged on the limit component.

[0018] The crushing assembly includes a crushing telescopic cylinder 1, at the output end of which a crushing shaft 2 matching the width of the cleaning conveyor B is provided, on which a cutter 3 for crushing the bottom drum below the belt conveyor is provided, and on which a crushing motor for realizing the rotation of the crushing shaft is provided. When the crushing motor is working, it can drive the crushing shaft and the cutter to rotate, thereby crushing the bottom drum. Preferably, two crushing telescopic cylinders are provided at intervals on the left and right, and the cutter and the crushing shaft are detachably installed, so as to facilitate the replacement of the candidate cutter.

[0019] The fixed end of the crushing telescopic cylinder 1 is hingedly set on the limit assembly, and a crushing rotating motor is set on the limit assembly to drive the crushing telescopic cylinder to rotate. When the bottom drum needs to be cleaned, the crushing telescopic cylinder company extends the crushing shaft to the specified length and then works, thereby achieving the crushing of the bottom drum. When the entire crushing assembly moves to the front end of the cleaning conveyor under the action of the cleaning conveyor, the crushing telescopic cylinder shrinks, and the crushing rotating motor works at the same time, causing the crushing telescopic cylinder to tilt, thereby preventing the cutter from damaging the belt conveyor.

[0020] The recovery assembly includes a recovery telescopic cylinder 4, and a recovery bucket 5 matching the width of the belt conveyor is arranged at the output end of the recovery telescopic cylinder 4. In order to prevent the crushed bottom drum from being retained in the recovery bucket, the lower end of the recovery bucket 5 is arranged as an anti-retention slope inclined forward and downward. The fixed end of the recovery telescopic cylinder 4 is hingedly arranged on the limit assembly, and a recovery rotating motor for driving the recovery telescopic cylinder to rotate is arranged on the limit assembly.

[0021] The recovery telescopic cylinder is used to make the recovery bucket flush with the crushing shaft with the cutter, so as to ensure that the crushed bottom drum can move to the front end of the cleaning conveyor frame under the action of the recovery bucket, so as to fall like the coal and rock transported by the belt conveyor. When the entire recovery assembly moves to the front end of the cleaning conveyor under the action of the cleaning conveyor, the recovery telescopic cylinder shrinks, and the recovery rotating motor works at the same time, so that the recovery telescopic cylinder tilts, thereby preventing the recovery bucket from damaging the belt conveyor.

[0022] The limiting assembly includes a limiting mounting plate 6 arranged on the cleaning conveyor, and a first limiting block 7 and a second limiting block 8 are arranged on the limiting mounting plate 6 at intervals in front and behind, and the crushing assembly and the recycling assembly are located between the corresponding first limiting block 7 and the second limiting block 8. Specifically, the side of the first limiting block 7 close to the crushing assembly and the recycling assembly is set as a contact inclined surface, and the first limiting block 7 is used to ensure that the crushing assembly and the recycling assembly do not affect the belt conveyor when the cleaning assembly is above the cleaning conveyor. The side of the second limiting block 8 close to the crushing assembly and the recycling assembly is set as a vertical surface, and the second limiting block 8 is used to ensure that the crushing assembly and the recycling assembly do not rotate backward under the reaction force of the bottom drum when the cleaning assembly is below the cleaning conveyor.

[0023] The control system includes a detection sensor arranged in the lane, a cleaning controller and a cleaning position sensor arranged corresponding to each cleaning component, and a master controller for realizing automatic continuous cleaning. The detection sensor is used to detect the height of the bottom drum under the belt conveyor, and the detection sensor, the cleaning controller and the cleaning position sensor are all electrically connected to the master controller. Among them, the cleaning controller is used to control the cleaning component to be in a working or non-working state, and the cleaning position sensor is used to detect the position of the corresponding cleaning component on the cleaning conveyor. The master controller can realize the cleaning conveyor operation according to the signal received from the detection sensor, and at the same time judge whether the corresponding cleaning controller controls the cleaning component to work according to the position signal of the cleaning position sensor.

[0024] The detection sensor can adopt the infrared level detector of the prior art. In this application, a certain bottom drum height is set, such as 20cm. When the height is reached, the signal is transmitted. The cleaning position sensor can adopt the induction sheet set on each cleaning component. At the same time, detectors for detecting the induction sheet are set at the front and rear ends of the cleaning conveyor. Of course, the detector can also be set on the frame of the belt conveyor, and the detector can determine the corresponding cleaning component according to the induction sheet. The cleaning controller and the master controller adopt the existing technology with functions such as information reception, information transmission and information processing. Preferably, the master controller is also provided with a control panel with information interaction function.

[0025] When the height of the bottom drum below the belt conveyor does not reach a predetermined height, the entire cleaning device does not work. At this time, the cleaning component located above the cleaning conveyor is in an inclined state, and the cleaning component located below the cleaning conveyor cannot contact the bottom drum.

[0026] When the height of the bottom drum under the belt conveyor reaches a predetermined height, the control system controls the cleaning conveyor to work, and at the same time, the first cleaning component that reaches the rear end of the cleaning conveyor from the top of the cleaning conveyor starts working at the designed initial cleaning depth. At this time, the contact depth between the cleaning conveyor and the highest bottom drum is the cleaning depth. Then, the cleaning depth of the subsequent cleaning components that reach the rear end of the cleaning conveyor from the top of the cleaning conveyor starts working by increasing the cleaning depth in sequence according to the design. Specifically, the contact depth between the second cleaning component that reaches the rear end of the cleaning conveyor and the highest bottom drum is the sum of the initial cleaning depth and an increased cleaning depth, the contact depth between the third cleaning component that reaches the rear end of the cleaning conveyor and the highest bottom drum is the sum of the initial cleaning depth and two increased cleaning depths, and so on. The contact depth between the Nth cleaning component that reaches the rear end of the cleaning conveyor and the highest bottom drum is the sum of the initial cleaning depth and N-1 increased cleaning depths.

[0027] When the cleaning depth of the subsequent cleaning component reaches the maximum, that is, the contact depth between the cleaning component and the highest bottom drum is the height of the highest bottom drum, the cleaning component behind the cleaning component does not work, and when the cleaning component with the maximum cleaning depth reaches the top of the cleaning conveyor, the entire cleaning device stops working. The initial cleaning depth and the cleaning depth increased each time can be equal, can be 2 cm, or can be different. This cleaning method makes the cleaning height of each cleaning component smaller, which not only ensures that the crushed bottom drum can be completely recovered by the recovery bucket, but also facilitates reducing the load of the cleaning conveyor and reducing the power of the cleaning conveyor.

Claims

1. An automatic and continuous cleaning device for the bottom drum of coal in a coal mine recovery roadway, characterized in that: The invention comprises a cleaning conveyor (B) arranged on a frame of a belt conveyor (A) and located below the belt conveyor (A) and a control system arranged in a lane. The conveying direction below the cleaning conveyor (B) is from back to front. A plurality of cleaning components (C) for cleaning the bottom drum are arranged at intervals on the cleaning conveyor (B). The control system is electrically connected to the cleaning conveyor (B) and the cleaning components (C) and is used to control the coordinated work of the cleaning conveyor (B) and the cleaning components (C), thereby realizing automatic and continuous bottom drum cleaning of the entire device.

2. The automatic continuous cleaning device for coal body in coal mine roadway bottom drum according to claim 1, characterized in that: The cleaning component (C) includes a crushing component and a recovery component arranged at intervals in front and behind, the crushing component is used to crush the bottom drum located below the belt conveyor, and the recovery component is used to recover the bottom drum after crushing. The cleaning component also includes a limiting component arranged corresponding to the crushing component and the recovery component, the limiting component can not only prevent the crushing component and the recovery component from damaging the belt conveyor, but also prevent the crushing component and the recovery component from rotating backwards, and the crushing component and the recovery component are arranged on the limiting component.

3. The automatic continuous cleaning device for coal body in the coal mining roadway according to claim 2, characterized in that: The crushing assembly comprises a crushing telescopic cylinder (1), the output end of the crushing telescopic cylinder (1) is provided with a crushing shaft (2) matching the width of the cleaning conveyor (B), the crushing shaft (2) is provided with a cutter (3) for crushing the bottom drum below the belt conveyor, the crushing shaft (2) is provided with a crushing motor for realizing the rotation of the crushing shaft, the fixed end of the crushing telescopic cylinder (1) is hingedly arranged on a limit assembly, and the limit assembly is provided with a crushing rotating motor for driving the crushing telescopic cylinder to rotate.

4. The automatic continuous cleaning device for the bottom drum of coal in a coal mine recovery roadway according to claim 2, characterized in that: The recovery component comprises a recovery telescopic cylinder (4), the output end of the recovery telescopic cylinder (4) is provided with a recovery bucket (5) matching the width of the belt conveyor, the lower end of the recovery bucket (5) is provided with an anti-retention slope inclined forward and downward, the fixed end of the recovery telescopic cylinder (4) is hingedly arranged on a limit assembly, and the limit assembly is provided with a recovery rotating motor for driving the recovery telescopic cylinder to rotate.

5. The automatic continuous cleaning device for coal body in the bottom drum of coal mining roadway according to claim 2, characterized in that: The limiting assembly comprises a limiting mounting plate (6) arranged on the cleaning conveyor, a first limiting block (7) and a second limiting block (8) are arranged on the limiting mounting plate (6) at intervals in front and back, and the crushing assembly and the recovery assembly are located between the corresponding first limiting block (7) and the second limiting block (8), the side of the first limiting block (7) close to the crushing assembly and the recovery assembly is set as a contact inclined surface, the first limiting block (7) is used to ensure that the crushing assembly and the recovery assembly do not affect the belt conveyor when the cleaning assembly is above the cleaning conveyor, the side of the second limiting block (8) close to the crushing assembly and the recovery assembly is set as a vertical surface, and the second limiting block (8) is used to ensure that the crushing assembly and the recovery assembly do not rotate backward under the reaction force of the bottom drum when the cleaning assembly is below the cleaning conveyor.

6. The automatic continuous cleaning device for coal body in coal mine roadway bottom drum according to claim 1, characterized in that: The control system includes a detection sensor arranged in the lane, a cleaning controller and a cleaning position sensor arranged corresponding to each cleaning component, and a master controller for realizing automatic continuous cleaning. The detection sensor is used to detect the height of the bottom drum under the belt conveyor, and the detection sensor, the cleaning controller and the cleaning position sensor are all electrically connected to the master controller. The cleaning controller is used to control the cleaning component to be in a working or non-working state. The cleaning position sensor is used to detect the position of the corresponding cleaning component on the cleaning conveyor. The master controller can realize the operation of the cleaning conveyor according to the signal received from the detection sensor, and at the same time judge whether the corresponding cleaning controller controls the operation of the cleaning component according to the position signal of the cleaning position sensor.

7. The automatic continuous cleaning device for coal body in the bottom drum of coal mining roadway according to claim 6, characterized in that: When the height of the bottom drum under the belt conveyor does not reach the preset height, the entire cleaning device does not work; when the height of the bottom drum under the belt conveyor reaches the preset height, the control system controls the cleaning conveyor to work, and at the same time, the first cleaning component that reaches the rear end of the cleaning conveyor from the top of the cleaning conveyor starts working with the designed initial cleaning depth, and the subsequent cleaning components that reach the rear end of the cleaning conveyor from the top of the cleaning conveyor start working with the cleaning depth increasing in sequence according to the design, and when the cleaning depth of the subsequent cleaning component reaches the maximum, the cleaning component behind the cleaning component does not work, and at the same time, when the cleaning component with the maximum cleaning depth reaches the top of the cleaning conveyor, the entire cleaning device stops working.

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