Lock opening coal unloading device for coal sliding hole

Abstract

The utility model discloses a coal unloading device with a slide coal hole locking port, relates to the technical field of coal mining, and mainly aims to simplify the structure of coal conveying equipment and reduce potential safety hazards. The main technical scheme of the utility model is as follows: the coal unloading device for the slip coal hole lock mouth comprises an inclined flow guide pipe and a buffer mechanism, the upper end opening of the inclined flow guide pipe is in butt joint with the coal slipping hole; the buffering mechanism comprises a wind blocking part and a balance weight part, the upper end of the balance weight part is fixedly connected to the upper side edge of the lower end opening of the inclined flow guide pipe, and the wind blocking part is fixedly attached to the balance weight part and used for covering the lower end opening of the inclined flow guide pipe.

Description

Technical Field

[0001] The utility model relates to the technical field of coal mining, in particular to a coal chute lock-mouth coal unloading device. Background Art

[0002] In underground coal mine excavation construction, the connection layout of the existing working face chute and the mining area tunnel is generally that the transport chute is directly connected with the mining area transport tunnel, and a connecting tunnel is separately arranged to meet the ventilation requirements during excavation; the return air chute is directly connected with the mining area return air tunnel, and a connecting tunnel is separately arranged to meet the transportation requirements during excavation.

[0003] The construction excavation working faces are the return air chute and the transport chute. The coal transportation route of the return air chute is: the shovel of the excavator in the return air chute → the first transport → the second transport → 4 scraper conveyors in the gas control measures lane (upper section) → 3 scraper conveyors in the gas control measures lane (upper section) → 3 scraper conveyors in the gas control measures lane (upper section) → 1 scraper conveyor in the gas control measures lane and the belt uphill connecting lane → the first mining area belt transport uphill belt conveyor → the bottom coal bunker → the main inclined shaft belt conveyor → the ground coal bunker; the coal transportation route of the transport chute is: the shovel of the excavator in the transport chute → the first transport → the second transport → the transport chute belt conveyor → the gas control measures lane (lower section) 2 scraper conveyors → the gas control measures lane and the belt uphill connecting lane 1 scraper conveyor → the first mining area belt transport uphill belt conveyor → the bottom coal bunker → the main inclined shaft belt conveyor → the ground coal bunker.

[0004] The following problems were found: long coal transportation lines, many transfer scrapers, many personnel required at each post, difficult inspection and maintenance, many impacts on production, and many safety hazards. Utility Model Content

[0005] In view of this, an embodiment of the utility model provides a coal chute lock-mouth coal unloading device, the main purpose of which is to simplify the structure of coal transportation equipment and reduce safety hazards.

[0006] In order to achieve the above purpose, the utility model mainly provides the following technical solutions:

[0007] The utility model provides a coal chute lock-mouth coal unloading device, which comprises: an oblique flow guide pipe and a buffer mechanism;

[0008] The upper end of the oblique flow guide pipe is connected to the coal chute;

[0009] The buffer mechanism includes a windshield component and a weight component, the upper end of the weight component is fixedly connected to the upper side of the lower port of the inclined flow guide pipe, and the windshield component is fixedly attached to the weight component to cover the lower port of the inclined flow guide pipe.

[0010] The purpose of the utility model and the solution to its technical problems can also be further achieved by adopting the following technical measures.

[0011] Optionally, the windshield component is made of a rubber belt, and the counterweight component is made of a steel chain.

[0012] Optionally, it also includes a dredging mechanism, which includes a hydraulic rod, a disc, a linkage shaft, a rocker arm and an arc rod. The upper side wall of the inclined air guide pipe is provided with a through hole. The linkage shaft is rotatably installed on the upper end side wall of the inclined air guide pipe. One end of the rocker arm is fixedly connected to one end of the linkage shaft, and the other end of the rocker arm is fixedly connected to one end of the arc rod. The length of the rocker arm is equal to the distance between the linkage shaft and the through hole, and is used to enable the other end of the arc rod to slide through the through hole. The center of the disc is fixedly connected to the other end of the linkage shaft, one end of the hydraulic rod is rotatably connected to the edge of the disc, and the other end of the hydraulic rod is rotatably connected to the side wall of the inclined air guide pipe.

[0013] Optionally, an oblique conveyor belt mechanism is further included, and the oblique conveyor belt mechanism is located below the oblique flow guide pipe, and an angle is formed between the extension direction of the oblique flow guide pipe and the conveying direction of the oblique conveyor belt mechanism, and the angle is less than 5°.

[0014] Optionally, a bracket is further included, the upper end of which is fixedly connected to the lower side wall of the inclined flow guide pipe for supporting the inclined flow guide pipe.

[0015] Optionally, the other end of the arc-shaped rod is in a spike shape.

[0016] Optionally, there are multiple steel chains, and the upper ends of the multiple steel chains are respectively fixedly connected to the upper side edges of the lower port of the inclined flow guide pipe, and the rubber belts are respectively fixedly connected to the multiple steel chains.

[0017] By means of the above technical solution, the utility model has at least the following advantages:

[0018] During the construction of belt transportation up the mountain in the coal mining area, two coal chutes were set up directly connected to the return air chute and the transport chute. The return air chute and the transport chute coal chutes were constructed in the rock between the B2 coal seam and the B3 coal seam.

[0019] During the construction of underground coal excavation, coal flows from the coal bunker through the coal chute and enters the inclined guide pipe. The coal flows along the inclined direction of the inclined guide pipe and impacts the counterweight component, which slows down the speed of the coal when it leaves the inclined guide pipe and reduces the impact force of the coal on the conveyor belt below, thus extending the service life of the conveyor equipment.

[0020] At the same time, the wind shield component isolates the space inside and outside the oblique flow guide pipe, preventing the air in the return air chute and the transport chute from flowing upward into the coal bunker along the oblique flow guide pipe, thereby preventing the flammable and explosive gases in the coal bunker from reaching the explosion limit. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A side view of a coal chute lock-mouth coal unloading device provided in an embodiment of the utility model;

[0022] Figure 2 for Figure 1 Enlarged view of part A (momentum analysis of falling coal);

[0023] Figure 3 A first-person perspective view of the oblique flow guide tube;

[0024] Figure 4 This is a stereoscopic image of the oblique flow guide tube from a second perspective.

[0025] The reference numerals in the drawings of the specification include: oblique guide pipe 1, coal chute 2, rubber belt 3, steel chain 4, hydraulic rod 5, disc 6, linkage shaft 7, rocker rod 8, arc rod 9, oblique conveyor belt mechanism 10, and bracket 11. DETAILED DESCRIPTION

[0026] In order to further explain the technical means and effects adopted by the utility model to achieve the predetermined utility model purpose, the specific implementation methods, structures, features and effects of the utility model application are described in detail below in conjunction with the accompanying drawings and preferred embodiments. In the following description, different "one embodiment" or "embodiment" does not necessarily refer to the same embodiment. In addition, specific features, structures, or characteristics in one or more embodiments may be combined in any suitable form.

[0027] The utility model is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0028] like Figure 1 As shown, an embodiment of the utility model provides a coal chute lock-mouth coal unloading device, which comprises: an inclined flow guide pipe 1 and a buffer mechanism;

[0029] The upper end of the oblique flow guide pipe 1 is connected to the coal chute 2;

[0030] The buffer mechanism includes a windshield component and a counterweight component, the upper end of the counterweight component is fixedly connected to the upper side of the lower port of the inclined flow guide pipe 1, and the windshield component is fixedly attached to the counterweight component to cover the lower port of the inclined flow guide pipe 1.

[0031] The working process of the chute lock coal unloading device is as follows:

[0032] During the construction of belt transport uphill in the coal mining area, two coal chutes 2 directly connected to the return air chute and the transport chute were set up. The return air chute and the transport chute coal chute 2 were constructed in the rock between the B2 coal seam and the B3 coal seam.

[0033] During the construction of underground coal excavation, coal flows from the coal bunker through the coal chute 2 and enters the inclined guide pipe 1. The coal flows along the inclined direction of the inclined guide pipe 1 and impacts the counterweight component, which slows down the speed of the coal when it leaves the inclined guide pipe 1, reduces the impact force of the coal on the conveyor belt below, and prolongs the service life of the conveyor equipment.

[0034] At the same time, the wind shield component isolates the space inside and outside the inclined flow guide pipe 1, preventing the air in the return air chute and the transport chute from flowing upward into the coal bunker along the inclined flow guide pipe 1, thereby preventing the inflammable and explosive gases in the coal bunker from reaching the explosion limit.

[0035] In the technical solution of the utility model, the device is installed to simplify the coal transportation structure, reduce the force of coal impacting the transportation belt, and at the same time, avoid air from entering the coal bunker, reducing safety hazards.

[0036] Specifically, the belt conveyor is located below the inclined guide pipe 1 and is used to receive the falling coal.

[0037] Specifically, the inclined angle of the inclined flow guide pipe 1 is 30°. The coal falls to the bottom wall of the inclined flow guide pipe 1, which slows down the falling speed of the coal in advance. The coal slides down along the inclined bottom wall and is then blocked by the counterweight component, which slows down the falling speed of the coal again.

[0038] like Figure 1 As shown, in a specific implementation, the wind shielding component adopts a rubber belt 3, and the counterweight component adopts a steel chain 4.

[0039] In this embodiment, specifically, the steel chain 4 has a certain weight and can adaptively deform due to the impact of coal to slow down the flow of coal. The rubber belt 3 is fixedly connected to the steel chain 4. The rubber belt 3 deforms and opens and closes with the coal flow to prevent the air in the return air chute and the transport chute from flowing upward into the coal bunker along the oblique guide pipe 1.

[0040] like Figure 1 , Figure 3 and Figure 4As shown, in a specific embodiment, it also includes a dredging mechanism, which includes a hydraulic rod 5, a disc 6, a linkage shaft 7, a rocker arm 8 and an arcuate rod 9. The upper side wall of the inclined flow guide pipe 1 is provided with a through hole, and the linkage shaft 7 is rotatably installed on the upper end side wall of the inclined flow guide pipe 1. One end of the rocker arm 8 is fixedly connected to one end of the linkage shaft 7, and the other end of the rocker arm 8 is fixedly connected to one end of the arcuate rod 9. The length of the rocker arm 8 is equal to the distance between the linkage shaft 7 and the through hole, and is used to make the other end of the arcuate rod 9 slide through the through hole. The center of the disc 6 is fixedly connected to the other end of the linkage shaft 7, one end of the hydraulic rod 5 is rotatably connected to the edge of the disc 6, and the other end of the hydraulic rod 5 is rotatably connected to the side wall of the inclined flow guide pipe 1.

[0041] Specifically, since the coal flowing through the coal chute 2 is of different sizes, it is possible that a plurality of coal blocks form bridges and pile up in the inclined flow guide pipe 1, thereby hindering the coal from flowing downward.

[0042] In this embodiment, the hydraulic rod 5 is extended and retracted, driving the disc 6 to reciprocate at a certain angle. The disc 6 drives the swing rod 8 to swing back and forth at a certain angle through the linkage shaft 7, driving the arc rod 9 to slide back and forth relative to the through hole. The other end of the arc rod 9 reciprocates to impact the coal blocks that are bridged and piled up in the inclined guide pipe 1, so that the piled coal becomes loose and the coal resumes flowing. When the coal flow in the inclined guide pipe 1 is smooth, there is no need for the arc rod 9 to reciprocate to impact the coal blocks in the inclined guide pipe 1. The hydraulic rod 5 drives the disc 6 to rotate, and the arc rod 9 returns to its position. The end face of the other end of the arc rod 9 is flush with the through hole, so as to avoid the arc rod 9 from obstructing the coal flow.

[0043] Specifically, a bearing sleeve is fixedly installed on the upper side wall of the oblique flow guide pipe 1, and the linkage shaft 7 is installed on the bearing sleeve through a bearing.

[0044] like Figure 1 As shown, in a specific embodiment, it also includes an oblique conveyor belt mechanism 10, which is located below the oblique guide pipe 1, and an angle is formed between the extension direction of the oblique guide pipe 1 and the conveying direction of the oblique conveyor belt mechanism 10, and the angle is less than 5°.

[0045] like Figure 1 and Figure 2 As shown, in the present embodiment, specifically, the conveying direction of the inclined conveyor belt mechanism 10 is inclined at an angle of 25° to 30° relative to the horizontal plane, and the extending direction of the inclined guide pipe 1 is substantially parallel to the conveying direction of the inclined conveyor belt mechanism 10, so that when the coal block that has escaped from the inclined guide pipe 1 contacts the conveying surface of the inclined conveyor belt mechanism 10, the impact momentum P2 of the coal block on the inclined conveyor belt mechanism 10 is only generated by the free fall acceleration of the coal, thereby greatly reducing the impact momentum affecting the inclined conveyor belt mechanism 10.

[0046] Specifically, because the extension direction of the inclined guide pipe 1 is basically parallel to the conveying direction of the inclined conveyor belt mechanism 10, the initial velocity direction of the coal block when leaving the inclined guide pipe 1 is basically parallel to the conveying direction of the inclined conveyor belt mechanism 10. When the coal block contacts the conveying surface of the inclined conveyor belt mechanism 10, the direction of the impact momentum P1 generated by the initial velocity of the coal block is parallel to the conveying surface of the inclined conveyor belt mechanism 10, and the impact damage of this momentum to the frame of the inclined conveyor belt mechanism 10 can be ignored.

[0047] like Figure 1 As shown, in a specific embodiment, a bracket 11 is further included, and the upper end of the bracket 11 is fixedly connected to the lower side wall of the inclined flow guide pipe 1 for supporting the inclined flow guide pipe 1.

[0048] In this embodiment, specifically, the lower end of the bracket 11 is fixedly installed on the ground on both sides of the inclined conveyor belt mechanism 10 by anchor bolts, and the upper end of the bracket 11 is fixedly connected to the lower side wall of the inclined flow guide pipe 1 by bolts, so as to provide support force for the inclined flow guide pipe 1 so that the upper end of the inclined flow guide pipe 1 can be stably connected to the coal chute 2.

[0049] In a specific implementation, the other end of the arc rod 9 is in a spike shape.

[0050] In this embodiment, specifically, the other end of the arc rod 9 is in a spike shape. When the other end of the arc rod 9 reciprocates to impact the coal that is accumulated in the inclined flow guide pipe 1, the spike-shaped end of the arc rod 9 can easily break the coal blocks that are accumulated in the bridge.

[0051] In a specific embodiment, there are multiple steel chains 4, and the upper ends of the multiple steel chains 4 are respectively fixedly connected to the upper side of the lower port of the inclined flow guide pipe 1, and the rubber belts 3 are respectively fixedly connected to the multiple steel chains 4.

[0052] In this embodiment, specifically, the upper ends of multiple steel chains 4 are respectively welded to the upper side of the lower port of the inclined guide pipe 1, and multiple screws penetrate the surface of the rubber belt 3 and are threadedly connected to the threaded holes of the physical part of the steel chain 4, so that the rubber belt 3 and the steel chain 4 can adaptively deform with the impact of the coal flow.

[0053] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A coal chute lock-mouth coal unloading device, characterized in that: include: An inclined flow guide pipe, the upper end of which is connected to the coal chute; A buffer mechanism, the buffer mechanism comprising a windshield component and a counterweight component, the upper end of the counterweight component is fixedly connected to the upper side of the lower port of the oblique flow guide pipe, and the windshield component is fixedly attached to the counterweight component to cover the lower port of the oblique flow guide pipe; A dredging mechanism, the dredging mechanism includes a hydraulic rod, a disc, a linkage shaft, a rocker arm and an arc rod, the upper side wall of the inclined flow guide pipe is provided with a through hole, the linkage shaft is rotatably installed on the upper end side wall of the inclined flow guide pipe, one end of the rocker arm is fixedly connected to one end of the linkage shaft, the other end of the rocker arm is fixedly connected to one end of the arc rod, the length of the rocker arm is equal to the distance between the linkage shaft and the through hole, and is used to make the other end of the arc rod slide through the through hole, the center of the disc is fixedly connected to the other end of the linkage shaft, one end of the hydraulic rod is rotatably connected to the edge of the disc, and the other end of the hydraulic rod is rotatably connected to the side wall of the inclined flow guide pipe.

2. The coal chute lock-mouth coal unloading device according to claim 1 is characterized in that: The windshield component is a rubber belt, and the counterweight component is a steel chain.

3. The coal chute lock-mouth coal unloading device according to claim 1, characterized in that: It also includes an oblique conveyor belt mechanism, which is located below the oblique flow guide pipe. An angle is formed between the extension direction of the oblique flow guide pipe and the conveying direction of the oblique conveyor belt mechanism, and the angle is less than 5°.

4. The coal chute lock-mouth coal unloading device according to any one of claims 1 to 3, characterized in that: It also includes a bracket, the upper end of which is fixedly connected to the lower side wall of the inclined flow guide pipe for supporting the inclined flow guide pipe.

5. The coal chute lock-mouth coal unloading device according to claim 1, characterized in that: The other end of the arc rod is in a spike shape.

6. The coal chute lock-mouth coal unloading device according to claim 2, characterized in that: There are multiple steel chains, and the upper ends of the multiple steel chains are respectively fixedly connected to the upper side edges of the lower port of the inclined flow guide pipe, and the rubber belts are respectively fixedly connected to the multiple steel chains.

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