Buffering device for coal slipping hopper in underground coal mine

Abstract

The utility model relates to the technical field of raw coal transportation, in particular to a coal mine underground coal slipping bucket buffering device which comprises a plurality of buffering pieces located on the two sides of the bottom of a coal slipping bucket and used for converting the impact force of coal flow to the coal slipping bucket through the buffering pieces. The buffering piece comprises an elastic structural piece and a supporting seat, one end of the supporting seat is connected with the bottom of the coal sliding hopper, the other end of the supporting seat is obliquely arranged towards the side plate of the coal sliding hopper, and the other end of the supporting seat is connected with the side plate of the coal sliding hopper through the elastic structural piece. The buffering pieces are installed on the two sides of the bottom of the coal slipping bucket, impact force of coal flow on the coal slipping bucket is converted through the buffering pieces, and severe impact force on the coal slipping bucket is avoided, so that impact damage to the coal slipping bucket is avoided, accident potential caused by hole blocking and bin breaking is eliminated, the safety coefficient of personnel and a coal flow system is improved, and the coal slipping bucket is safe and reliable. And by adopting the buffer device, the manual maintenance cost is reduced, and the production efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a coal conveying technology field, concretely relates to a coal mine underground coal chute buffer device. BACKGROUND

[0002] The belt conveyor operation maintenance operation is responsible in the underground main coal flow conveying roadway, the bottom of the high-fall coal chute transfer point is a metal coal chute, the vibration amplitude of the metal coal chute caused by the large block impact mixed in the coal flow is big, leading to the loosening of the fixed anchoring point, the cracking of the welding point, the falling of the connecting bolt, and the deformation damage of the coal chute bottom coal chute plate caused by the impact;

[0003] In the prior art, in order to reduce the impact of coal flow on the bottom coal chute plate of the coal chute, a buffer chain is installed in the first slope of the metal coal chute, and the coal flow impacts the buffer chain before falling to the coal chute plate, so as to slow down the direct impact of the coal flow on the bottom coal chute plate. However, when the coal flow passes through the buffer chain, the buffer chain will swing greatly due to inertia, and the buffer chain will generate a serious impact force on the metal coal chute. The impact damage of the coal chute caused by the coal flow will interrupt the production, increase the maintenance cost, and reduce the production efficiency.

[0004] At the same time, a belt feeder is installed below the metal coal chute to adjust the feeding amount of the belt feeder, so that there is always residual coal in the coal chute, so as to play a coal flow buffering operation and avoid the direct impact of the coal flow on the coal chute. However, the coal output of the working face is uneven, and the coal amount is large at times. The coal amount in the coal chute is not easy to control, and when the coal amount is large, the coal pile will block the hole. When the coal chute is dredged, there will be safety hazards, and the coal pile will be damaged. SUMMARY

[0005] In order to solve the problems of the prior art, the utility model provides a coal mine underground coal chute buffer device, which comprises a plurality of buffer members located at both sides of the bottom of the coal chute, and is used for converting the impact force of the coal flow on the coal chute through the buffer members.

[0006] The buffer member comprises an elastic structural member and a support seat, one end of the support seat is connected with the bottom of the coal chute, the other end of the support seat is inclinedly arranged towards the side plate of the coal chute, and the other end of the support seat is connected with the side plate of the coal chute through the elastic structural member.

[0007] Further, the elastic structural member is a shock absorbing spring structure.

[0008] Further, the shock absorbing spring structure has a length of 200mm, an outer diameter of 140mm, and a wire diameter of 14mm.

[0009] Further, the support base comprises I-shaped structural steels of different heights, one end of the I-shaped structural steels is connected with the bottom of the coal chute, the other end of the I-shaped structural steels is arranged obliquely towards the side plate of the coal chute, the other end of the I-shaped structural steels is connected with each other, and the other end of the I-shaped structural steels is further connected with a support plate, and the support plate is connected with the bottom of the side plate of the coal chute through a damping spring structure;

[0010] Further, the support plate is provided with a protrusion, and the protrusion is sleeved with the damping spring structure for limiting and fixing the spring to prevent the spring from moving and falling off;

[0011] The coal mine underground coal chute buffering device has the advantages that:

[0012] The buffering device is characterized by comprising a coal chute, a buffering device and a coal conveying device. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is an installation diagram of the buffering device.

[0014] Reference signs:

[0015] In the figure, 1 is a support plate, 2 is an I-shaped steel, 3 is a damping spring structure, 4 is a side plate of a coal chute, and 5 is a loose-leaf. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0017] Please refer to Figure 1 The coal mine underground coal chute buffering device is characterized by comprising a coal chute, a buffering device and a coal conveying device.

[0018] The coal chute buffer device comprises a plurality of buffer members arranged at both sides of the bottom of the coal chute, which is used to convert the impact force of the coal flow on the coal chute through the buffer members, so that the coal flow does not produce a serious impact force on the coal chute, and the coal chute is not damaged by the impact, and at the same time, a belt feeder does not need to be installed below the coal chute, the coal directly falls from the coal chute hole to the transport unit output, and the problem of coal stacking and hole blocking does not occur; one end of the coal chute is connected to the top of the side plate 4 of the coal chute through a hinge 5, and rubber is arranged on the inner side of the connection position, which is used to prevent coal powder from leaking;

[0019] The buffer member comprises an elastic structure and a support seat, one end of the support seat is connected to the bottom of the coal chute, and the other end of the support seat is arranged to be inclined towards the side plate 4 of the coal chute, and the other end of the support seat is connected to the side plate 4 of the coal chute through the elastic structure;

[0020] Further, the elastic structure is a shock-absorbing spring structure 3;

[0021] Further, the shock-absorbing spring structure 3 has a length of 200 mm, an outer diameter of 140 mm, and a wire diameter of 14 mm;

[0022] Further, the support seat comprises a plurality of I-shaped structural steels 2 with different heights, one end of each I-shaped structural steel 2 is connected to the bottom of the coal chute, the other end of each I-shaped structural steel 2 is arranged to be inclined towards the side plate 4 of the coal chute, the other end of each I-shaped structural steel 2 is connected to each other, and the other end of each I-shaped structural steel 2 is further connected to a support plate 1, and the support plate 1 is connected to the bottom of the side plate 4 of the coal chute through the shock-absorbing spring structure 3;

[0023] Further, the support plate 1 is provided with a protrusion, and the shock-absorbing spring structure 3 is sleeved on the protrusion, which is used to limit and fix the spring to prevent the spring from moving and falling off; wherein the support plate 1 is a rectangular plate;

[0024] It should be noted that the side plate 4 of the coal chute is a steel plate with a diameter of 30 mm, the I-shaped structural steel 2 is a mining 11# I-shaped steel, the other end of the support seat is connected to the side plate 4 at both sides of the bottom of the coal chute through the shock-absorbing spring structure 3, and two shock-absorbing spring structures 3 with a length of 200 mm, an outer diameter of 140 mm, and a wire diameter of 14 mm are arranged between the support seat and the side plate 4;

[0025] After the original design of the coal chute without the buffer device is used for 90 days, it needs to be overhauled once a month, and 4 workers need to work for 24 hours. After the improvement, it does not need to be overhauled within 2 years. Each fully mechanized coal mining face serves for 2 years, and (24-3)×4=84 person-hours are saved, each worker is paid 600 yuan, and the labor cost of each working face is saved: 84×600=50400 yuan. Each time, the maintenance material is about 3000 yuan, and the service period of one working face saves the replacement and maintenance of the steel plate and the material about 21×3000=63000 yuan. The total cost saving is about: 50400+63000=113400 yuan per working face;

[0026] It is worth mentioning that the application converts the impact force of the coal flow on the coal chute through the buffer, so that the coal chute will not be seriously impacted, and the impact damage of the coal chute will not be caused, and the belt feeder does not need to be installed below the coal chute, the coal directly falls from the coal chute hole to the transport unit output, and the problem of coal stacking and hole blocking does not occur, the accident hidden danger caused by the hole blocking and the collapse of the coal chute is eliminated, the safety factor of the personnel and the coal flow system is improved, the artificial maintenance cost is reduced, and the production efficiency is improved.

[0027] The above only describes the preferred embodiments of the present application, and is not used to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A coal mine underground coal chute buffer device, characterized in that, The buffer members are arranged on both sides of the bottom of the coal chute, and are used for converting the impact force of the coal flow on the coal chute through the buffer members; The buffer member comprises an elastic structure and a support seat, one end of the support seat is connected with the bottom of the coal chute, the other end of the support seat is arranged obliquely towards the side plate (4) of the coal chute, and the other end of the support seat is connected with the side plate (4) of the coal chute through the elastic structure.

2. The coal mine underground coal chute buffer device according to claim 1, characterized in that The elastic structure is a damping spring structure (3).

3. The coal mine underground coal chute buffer device according to claim 2, characterized in that The damping spring structure (3) has a length of 200 mm, an outer diameter of 140 mm, and a wire diameter of 14 mm.

4. The coal mine underground coal chute buffer device according to claim 3, characterized in that The support seat comprises a plurality of I-shaped structural steels (2) with different heights, one end of each I-shaped structural steel (2) is connected with the bottom of the coal chute, the other end of each I-shaped structural steel (2) is arranged obliquely towards the side plate (4) of the coal chute, the other ends of the I-shaped structural steels (2) are connected with each other, the other ends of the I-shaped structural steels (2) are further connected with a support plate (1), and the support plate (1) is connected with the bottom of the side plate (4) of the coal chute through the damping spring structure (3).

5. The coal mine underground coal chute buffer device according to claim 4, characterized in that, A protrusion is arranged on the support plate (1), and the damping spring structure (3) is sleeved on the protrusion, so as to limit and fix the spring and prevent the spring from moving and falling off.

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