Main draw shaft cut-off structure

Abstract

The utility model discloses a main draw shaft cut-off structure which is characterized in that an ore receiving platform is arranged at the position, close to an ore unloading pit, of the middle section of a main draw shaft, and the main draw shaft is cut off through the ore receiving platform; an ore drawing platform is arranged below the ore receiving platform, a vibration ore drawing machine is installed on the ore drawing platform, the vibration ore drawing machine is in butt joint with the ore receiving platform, and the ore drawing platform is in butt joint with the vibration ore drawing machine; a tamping machine chamber is arranged beside the mine unloading pit close to the mine receiving platform, and an overhaul channel is arranged beside the tamping machine chamber and communicated with the space where the vibratory ore drawing machine is located. An air door is arranged at the position, adjacent to the tamping machine chamber, of the overhaul channel. In this way, after ore is poured into the middle section, the reasonable material level can be controlled through the vibration ore drawing machine, and ore drawing operation can be conducted at the two middle section positions at the same time. The whole structural design is scientific and reasonable, simple and effective, operation is convenient, and the problems that ore in the lower middle section inclined chute cannot automatically slide into the main draw shaft, the ore is prone to smashing and blocking, the shaft wall is prone to being damaged and the like can be effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of mine mining, in particular to an application management and auxiliary facility structure for a main chute. Background Art

[0002] A chute is a tunnel that uses deadweight to discharge ore from top to bottom. It is widely used in mines developed through adit or shaft development. A main chute, serving one or more stages, is used to transfer ore or waste rock from the upper stage to the lower stage or lower ore bin. It is considered an auxiliary development tunnel. The most common main chute is a vertical chute, with the shaft forming a straight line. Ore from the intermediate stages is discharged into the chute via branch chutes. This chute is simple in structure, easy to use, and simple to excavate, making it the most widely used chute type. However, after use, it was found that when the upper and lower middle sections are producing at the same time, this type of main chute has the following defects: First, the height of the mine surface is limited during the ore storage stage. If the mine surface height is lower than the lower middle section branch chute, the impact force of unloading ore in the upper middle section is large, the ore is easy to crush, the powder ore is easy to agglomerate and cause chute blockage, and the lower middle section branch chute has a large dust return; if the mine surface height is higher than the lower middle section branch chute, the ore unloaded into the branch chute in the lower middle section cannot enter the vertical chute, and the production of the lower middle section is greatly restricted; second, the ore has a large impact and wear on the well wall, especially when the chute is deep and maintenance is difficult; third, the chute cannot fully play the role of storage and production regulation. Utility Model Content

[0003] The utility model aims at the shortcomings of the existing technology and provides a main chute cut-off structure with more reasonable structural design, which can orderly control the lowering of ore, reduce ore crushing, chute blockage and damage to the shaft wall, and can regulate the production process.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions: a main chute cut-off structure, an ore receiving platform is provided in the middle section of the main chute near the unloading pit, and the main chute is cut off by the ore receiving platform; an ore discharge platform is provided below the ore receiving platform, and a vibrating ore discharger is installed on the ore discharge platform, the vibrating ore discharger is docked with the ore discharge port of the ore receiving platform, and the ore discharge port of the ore discharge platform is docked with the vibrating ore discharger, and the upper and lower parts of the main chute are connected through the ore discharge port of the ore discharge platform; a tamping machine chamber is provided next to the unloading pit near the ore receiving platform, and a maintenance passage is provided next to the tamping machine chamber, and the maintenance passage is connected to the space where the vibrating ore discharger is located; an air gate is provided at a position adjacent to the maintenance passage and the tamping machine chamber, and the tamping machine chamber is separated from the maintenance passage by the air gate.

[0005] Furthermore, the ore receiving platform is installed and fixed by a plurality of diagonal supports and a plurality of vertical supports. The top end of the diagonal support is against the middle area of ​​the bottom of the ore receiving platform, and the bottom end is fixed on the wall of the main chute; the top end of the vertical support is against the bottom surface of the ore receiving platform near the edge of its ore unloading port, and the bottom end of the vertical support is fixed on the ore discharge platform.

[0006] Furthermore, the ore-drawing platform is installed and fixed by a plurality of support rods, each support rod is fixed on the wall of the main chute in an inclined posture, and the top end of the support rod supports the bottom middle area of ​​the ore-drawing platform.

[0007] Furthermore, an observation platform is provided in the maintenance passage, and the observation platform is extended to the side of the vibrating ore drawer through a ladder.

[0008] Furthermore, the support rods, vertical supports and diagonal supports are all made of I-beams, and the bottom ends of the support rods and the bottom ends of the diagonal supports are respectively fixed to the well wall of the main chute by bolts.

[0009] Furthermore, a crushing station is provided below the ore-drawing platform in the main chute, and the material level in the main chute is controlled by the crushing station.

[0010] This utility model utilizes a receiving platform, a vibrating ore discharger, and an ore discharger as a cutoff structure in the middle section of the main chute. After ore is poured into the middle section, the vibrating ore discharger can be used to control the material level at a reasonable level. The material level in the main chute below the middle section can be consistently controlled by the crushing station at a reasonable level, for example, within 10 meters below the lower opening of the 335m middle section inclined chute. Simultaneous ore discharge operations can be performed at two middle sections to meet the needs of more demanding production schedules. The entire structural design is scientifically sound, simple, effective, and easy to operate, effectively resolving issues such as the inability of ore in the lower middle section inclined chute to flow into the main chute, the ore being easily crushed, clogged, and damaging the shaft wall. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a cross-sectional schematic diagram of the utility model.

[0012] Figure 2 for Figure 1 The local schematic diagram shown,

[0013] Figure 3 for Figure 2 The installation diagram of the vibrating ore drawer is shown.

[0014] In the figure, 1 is the main chute, 2 is the unloading pit, 3 is the ore receiving platform, 4 is the vibrating ore discharger, 5 is the ore discharge platform, 6 is the tamping machine chamber, 7 is the maintenance passage, 8 is the air door, 9 is the main chute to control the material level, 10 is the crushing station, 11 is the diagonal support, 12 is the vertical support, and 13 is the support rod. DETAILED DESCRIPTION

[0015] In this embodiment, refer to Figure 1-Figure 3The main chute cut-off structure is provided with an ore receiving platform 3 at the middle section 335m of the main chute 1 near the unloading pit 2, and the main chute 1 is cut off by the ore receiving platform 3 (that is, the main chute 1 is cut off at a position about 3m above the 335m roadway floor and a material outlet is left); an ore discharge platform 5 is provided below the ore receiving platform 3, and a vibrating ore discharger 4 is installed on the ore discharge platform 5, which is connected to the ore discharge port of the ore receiving platform 3, and the ore discharge port of the ore discharge platform 5 is connected to the vibrating ore discharger 4. The main chute 1 is connected to the vibrating ore drawer 4 by connecting the upper and lower parts of the main chute 1 through the ore discharge port of the ore discharge platform 5. A tamping machine chamber 6 is set next to the unloading pit 2 near the ore receiving platform 3. A maintenance passage 7 is set next to the tamping machine chamber 6. The maintenance passage 7 is connected to the space where the vibrating ore drawer 4 is located to facilitate maintenance. A damper 8 is set adjacent to the maintenance passage 7 and the tamping machine chamber 6. The damper 8 separates the tamping machine chamber 6 from the maintenance passage 7 to prevent dust generated by ore discharge from entering the tamping machine chamber 6. The ore discharged from the middle section 395m unloading pit 2 first falls onto the ore receiving platform 3, then falls into the vibrating ore drawer 4 in an orderly manner through the ore discharge port of the ore receiving platform 3, and then falls through the ore discharge platform 5 under the control of the vibrating ore drawer 4.

[0016] The ore receiving platform 3 is installed and fixed by a plurality of diagonal supports 11 and a plurality of vertical supports 12. The top of the diagonal support 11 is against the middle area of ​​the bottom of the ore receiving platform 3, and the bottom end is fixed on the wall of the main chute 1; the top of the vertical support 12 is against the bottom surface of the ore receiving platform 3 near the edge of its ore unloading port, and the bottom end of the vertical support 12 is fixed on the ore discharge platform 3.

[0017] The ore-drawing platform 5 is installed and fixed by a plurality of support rods 13 . Each support rod 13 is fixed on the wall of the main chute 1 in an inclined posture. The top of the support rod 13 supports the bottom middle area of ​​the ore-drawing platform 5 .

[0018] An observation platform is provided in the maintenance passage 7, which is extended to the side of the vibrating ore drawer 4 through a ladder for daily observation and maintenance operations.

[0019] The support rod 13, the vertical support 12 and the diagonal support 11 are all made of I-beams, and the bottom ends of the support rod 13 and the bottom ends of the diagonal support 11 are respectively fixed to the well wall of the main chute 1 by bolts.

[0020] A crushing station 10 is installed below the ore-drawing platform in the main chute 1 (176m in the middle section). The crushing station 10 is used to regulate the main chute control material level 9 so that the main chute control material level 9 is always controlled within 10m below the lower outlet of the 335m middle section inclined chute.

[0021] The present invention has been described in detail above. The above description is only a preferred embodiment of the present invention and should not limit the scope of implementation of the present invention. All equivalent changes and modifications made within the scope of this application should still fall within the scope of the present invention.

Claims

1. A main chute cut-off structure, characterized by: A receiving platform is set in the middle section of the main chute near the unloading pit, and the main chute is cut off by the ore receiving platform; an ore discharge platform is set below the ore receiving platform, and a vibrating ore discharger is installed on the ore discharge platform, which is connected to the ore discharge port of the ore receiving platform, and the ore discharge port of the ore discharge platform is connected to the vibrating ore discharger, and the upper and lower parts of the main chute are connected through the ore discharge port of the ore discharge platform; a tamping machine chamber is set next to the unloading pit near the ore receiving platform, and a maintenance passage is set next to the tamping machine chamber, and the maintenance passage is connected to the space where the vibrating ore discharger is located; an air gate is set adjacent to the maintenance passage and the tamping machine chamber, and the air gate separates the tamping machine chamber from the maintenance passage.

2. The main chute cut-off structure according to claim 1, characterized in that: The ore receiving platform is installed and fixed by a plurality of diagonal supports and a plurality of vertical supports. The top of the diagonal support is against the middle area of ​​the bottom of the ore receiving platform, and the bottom end is fixed on the wall of the main chute; the top of the vertical support is against the bottom surface of the ore receiving platform near the edge of its ore unloading port, and the bottom end of the vertical support is fixed on the ore placing platform.

3. The main chute cut-off structure according to claim 2, characterized in that: The ore-drawing platform is fixed by a plurality of support rods, each of which is fixed on the wall of the main chute in an inclined posture, and the top of the support rod supports the bottom middle area of ​​the ore-drawing platform.

4. The main chute cut-off structure according to claim 1, characterized in that: An observation platform is provided in the maintenance passage, and the observation platform extends to the side of the vibrating ore drawer through a ladder.

5. The main chute cut-off structure according to claim 3, characterized in that: The support rods, vertical supports and diagonal supports are all made of I-beams, and the bottom ends of the support rods and the diagonal supports are respectively fixed to the well wall of the main chute by bolts.

6. The main chute cut-off structure according to claim 1, characterized in that: A crushing station is installed below the ore-drawing platform in the main chute, and the material level in the main chute is controlled by the crushing station.

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