Improved draw shaft structure

Abstract

The utility model relates to the technical field of mine mining, in particular to an improved draw shaft structure which comprises a draw shaft arranged in a mine, a V-shaped grating, a mechanical hydraulic crushing system and a lower ore outlet. According to the V-shaped grating, two grating bodies are arranged at the draw shaft opening at a certain included angle, the whole V-shaped grating is in a V shape, it is guaranteed that one grating body is vertically embedded into the draw shaft wall, and the mechanical hydraulic crushing system is arranged beside the draw shaft opening. The fastening mode of grid steel is changed into a mortise and tenon embedding mode from a welding mode, the structural strength of the grid is enhanced, the grid structure is more stable along with the increase of the use frequency, the overhaul and maintenance frequency is greatly reduced, the ore drawing efficiency is improved, and the service life of the grid is prolonged. The continuous operation capability of the crushing system is improved; and therefore, the requirement on the size of the ore is reduced, the secondary blasting frequency of mining is reduced, and the safety and efficiency of underground operation are further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of mine mining, and particularly relates to an improved ore pass structure. Background Art

[0002] Ore pass ore drawing is a method of drawing ore downward by its own weight. In underground mine exploitation, due to the great depth (height) of mine shafts, ore is often concentrated in the lowest section for unified hoisting, resulting in frequent transportation operations. To improve the ore transportation efficiency and save costs, operators connect the ore rooms at each stage by digging ore passes underground, directly dumping the ore from top to bottom, and then directly transporting it away by the transportation vehicles waiting underground. The ore pass not only improves the transportation efficiency, but also utilizes the gravitational potential energy of vertically dumping ore to play a certain role in crushing the ore.

[0003] The ordinary ore pass ore drawing method is to set a horizontal grille welded by steel at the upper opening of the ore pass. Small pieces of ore pass through the grille and enter the ore pass, while large pieces of ore remain on the grille. Then, workers use a sledgehammer to break the large pieces of ore on the grille and let them fall into the ore pass. When conditions permit, a mechanical crushing hammer or a remote control crushing hammer is used to replace manual operation; in order to avoid generating too many large pieces of ore, operators often strengthen the secondary crushing amount in the mining stage. A new type of grille structure in the prior art sets the grille at the ore pass opening in a combination of horizontal and inclined ways, dumping the ore on the inclined grille to screen out small pieces of ore, and the large pieces of ore roll onto the horizontal grille by themselves for crushing, but this has higher requirements for the stability of the grille structure. The existing methods have the following defects: (1) The ore pass ore drawing system using a sledgehammer by workers has low efficiency and poor safety; (2) Although the horizontal-inclined structure improves the feeding speed, its structure is more prone to damage and also increases the maintenance difficulty; (3) High-frequency secondary crushing results in high blasting costs and poor safety; (4) Using a mechanical crushing hammer or a remote control crushing hammer has great destructive effects on the welded parts of the horizontal grille, with a risk of damage, and the daily maintenance frequency cost is relatively high. Summary of the Utility Model

[0004] The purpose of the utility model is to provide an improved ore pass structure to solve at least part of the problems existing in the prior art.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] An improved ore pass structure includes an ore pass, a V-shaped grille, a mechanical hydraulic crushing system and a lower ore outlet arranged in a mine; the V-shaped grille is formed by arranging two grilles at a certain angle at the ore pass opening, presenting a V shape as a whole and ensuring that one of the grilles is vertically embedded in the ore pass shaft wall, and the mechanical hydraulic crushing system is arranged beside the ore pass opening.

[0007] As a preferred embodiment of an improved ore pass structure of the present utility model, wherein: the V-shaped grille is assembled by connecting cross beams and longitudinal beams through a mortise and tenon connection method.

[0008] As a preferred embodiment of an improved ore pass structure of the present utility model, wherein: grooves are formed at regular intervals on the cross beams, and the longitudinal beams are connected by interference fit tenons; or grooves are formed at regular intervals on the longitudinal beams, and the cross beams are connected by interference fit tenons.

[0009] As a preferred embodiment of an improved ore pass structure of the present utility model, wherein: the cross beams and longitudinal beams are made of I-beams or square steel.

[0010] As a preferred embodiment of an improved ore pass structure of the present utility model, wherein: the center distance between adjacent grooves is 500 mm, the width of the grooves is 150 mm, and the depth is 75 mm.

[0011] As a preferred embodiment of an improved ore pass structure of the present utility model, wherein: a plurality of cross beams are arranged below the V-shaped grille as supports.

[0012] As a preferred embodiment of an improved ore pass structure of the present utility model, wherein: the V-shaped grille is composed of two grilles, a flat grille and an inclined grille, which are spliced together. For easy disassembly, the connection part is not welded and fixed; the included angle between the flat grille and the inclined grille is 120-150°.

[0013] As a preferred embodiment of an improved ore pass structure of the present utility model, wherein: for facilitating the assistance in both the up and down directions during hydraulic crushing to promote crushing, each cross beam is inlaid with high-strength steel teeth.

[0014] The beneficial effects of the present utility model are:

[0015] The present utility model discloses an improved ore pass structure, including an ore pass, a V-shaped grille, a mechanical hydraulic crushing system and a lower ore outlet arranged in a mine; the V-shaped grille is arranged at the ore pass opening with two grilles at a certain included angle, presenting a V shape as a whole and ensuring that one of the grilles is vertically embedded in the ore pass wall, and the mechanical hydraulic crushing system is arranged beside the ore pass opening. The V-shaped grille is adopted and its structure is upgraded and strengthened: the fastening method of the grille steel is changed from welding to mortise and tenon embedding, which enhances the structural strength of the grille, makes the grille structure more and more stable with the increase of the number of uses, greatly reduces the maintenance frequency, not only improves the ore discharging efficiency, but also improves the continuous operation ability of the crushing system; and thereby reduces the requirement for the ore size, reduces the secondary blasting frequency of mining, and further improves the safety and efficiency of underground operations. Description of the Drawings

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0017] Figure 1 It is a schematic cross-sectional view of the improved ore pass structure of the present invention.

[0018] Figure 2 It is a schematic cross-sectional view of the V-shaped grille of the present invention.

[0019] Figure 3 It is a top view of the V-shaped grille of the present invention.

[0020] Figure 4 It is an assembly schematic diagram of the V-shaped grille of the present invention.

[0021] In the figure: 1 - ore pass, 2 - V-shaped grille, 3 - mechanical hydraulic crushing device, 4 - flat grille, 5 - inclined grille, 6 - support cross beam, 7 - teeth.

[0022] The realization, functional features and advantages of the object of the present invention will be further described in conjunction with the embodiments and with reference to the drawings. Specific embodiments

[0023] The following will clearly and completely describe the technical solutions in the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0024] To better understand the above technical solutions, the following will detail the above technical solutions in combination with the drawings in the specification and specific embodiments.

[0025] An embodiment of the present invention discloses an improved ore pass structure, as Figures 1-4 shown, including an ore pass 1, a V-shaped grille 2, a mechanical hydraulic crushing system 3 and a lower ore outlet provided in a mine; the V-shaped grille 2 arranges two grilles at a certain angle at the ore pass opening, the whole is V-shaped and ensures that one of the grilles is vertically embedded in the wall of the ore pass 1, and the mechanical hydraulic crushing system 3 is arranged beside the ore pass 1 opening.

[0026] Using gravity, the ore is dumped to the high position of the V-shaped grille 2. The ore first slides by itself. After the small pieces of ore fall, the large pieces of ore are concentrated and piled up at the low position of the grille. The mechanical hydraulic crushing system 3 is a crushing drive device that is arranged above the grille to control its movement and percussion. With the collision of the ore against the grille and the impact of the crushing hammer, the structural stability of the grille is further enhanced. And when crushing at the low position, the entire V-shaped grille 2 can be vibrated to prompt the ore stuck at the high position to slide or fall.

[0027] In an embodiment of the present utility model, the V-shaped grille 2 is assembled by tenons and mortises connecting the cross beams and longitudinal beams.

[0028] In an embodiment of the present utility model, grooves are opened at certain intervals on the cross beams, and the longitudinal beams are tenoned by interference fit; or grooves are opened at certain intervals on the longitudinal beams, and the cross beams are tenoned by interference fit.

[0029] In an embodiment of the present utility model, the cross beams and longitudinal beams are made of I-beams or square steel. Cross beam: width 150 mm, height 300 mm; Longitudinal beam: width 150 mm, height 150 mm;

[0030] In an embodiment of the present utility model, the center distance between adjacent grooves is 500 mm, the groove width is 150 mm, and the depth is 75 mm.

[0031] In an embodiment of the present utility model, several cross beams are arranged below the V-shaped grille 2 as supports 6.

[0032] In an embodiment of the present utility model, the V-shaped grille 2 is spliced by two grilles, namely a flat grille 4 and an inclined grille 5. For easy disassembly, the connection between the two is not welded and fixed; the included angle between the flat grille 4 and the inclined grille 5 is 120 - 150°.

[0033] In an embodiment of the present utility model, for facilitating assistance during hydraulic crushing both above and below to promote crushing, each cross beam is inlaid with high-strength steel teeth 7.

[0034] When the improved ore pass structure of the present utility model is in use, the ore is poured into the high position of the grille of the V-shaped grille 2 by the ore loading equipment. Most of the smaller pieces of ore are screened out by self-sliding, and the large pieces of ore after screening roll to the low position of the grille of the V-shaped grille 2. The mechanical hydraulic crushing system 3 is used to control its movement and percussion to crush it, and the ore stuck at the high position of the grille can also be made to slide or fall. The crushed ore falls through the grille into the ore pass bin below. As the number of times the grille is used increases, the collision of the ore against the grille and the impact of the mechanical hydraulic crushing system 3 will further enhance the structural stability of the grille.

[0035] The above are only the preferred specific embodiments of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution of the present utility model and its inventive concept, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present utility model.

Claims

1. An improved chute structure, characterized in that: It includes a mine chute, a V-shaped grid, a mechanical hydraulic crushing system and a lower ore outlet; the V-shaped grid is a grid that arranges two grids at a certain angle at the chute outlet, forming a V shape as a whole and ensuring that one of the grids is vertically embedded in the chute wall, and the mechanical hydraulic crushing system is arranged next to the chute outlet.

2. The improved chute structure according to claim 1 is characterized in that: The V-shaped grille is assembled by connecting the horizontal beam and the longitudinal beam through mortise and tenon joints.

3. The improved chute structure according to claim 2 is characterized in that: Grooves are made on the crossbeam at regular intervals, and the longitudinal beams are connected by interference fit; or grooves are made on the longitudinal beams at regular intervals, and the crossbeams are connected by interference fit.

4. The improved chute structure according to claim 1 is characterized in that: The cross beams and longitudinal beams are made of I-beams or square steel.

5. The improved chute structure according to claim 3 is characterized in that: The center distance between adjacent grooves is 500mm, the groove width is 150mm and the depth is 75mm.

6. The improved chute structure according to claim 1, characterized in that: A number of cross beams are arranged under the V-shaped grille as supports.

7. The improved chute structure according to claim 1 is characterized in that: The V-shaped grille is made up of two grilles, a flat grille and an inclined grille, and the angle between the flat grille and the inclined grille is 120 to 150 degrees.

8. The improved chute structure according to claim 2, characterized in that: Each beam is inlaid with high-strength steel teeth.

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