Inclined chute ore discharging and drawing experimental device and method capable of adjusting shaft inclination angle

Abstract

The invention discloses an inclined chute ore discharging and drawing experiment device and method capable of adjusting the inclination angle of a shaft, and belongs to the technical field of mine production tests. The device comprises a shaft device, a fixing support and an inclination angle adjusting device. Wherein the shaft device consists of an inclined shaft and an ore chute; the fixing support is fixedly connected with the ground through a vertical steel plate, a horizontal steel plate and four grounding stand columns. The inclination angle adjusting device is composed of a sliding way, a pulley block, a tray and a pulley brake lock. The shaft device is fixedly connected with the fixing support through the inclination angle adjusting device. The inclined draw shaft is connected with the fixed bracket through the slide way and the pulley block, and the inclination angle of the inclined draw shaft is controlled by adjusting the sliding of the pulley, so that the change of the inclination angle of the inclined draw shaft is realized, and ore discharging and drawing experiments in the inclined draw shaft at different inclination angles are carried out.

Description

Technical Field

[0001] The invention belongs to the technical field of mine production experiments, and more specifically, relates to an inclined mine unloading and ore-discharging experimental device and method capable of adjusting the inclination of a shaft. Background Art

[0002] The chute is an important project for underground mines to achieve low-cost downward transportation, and the stability of the chute wall is a key factor affecting the service life of the chute. The movement law of the falling ore and rock blocks in the chute determines the scope, type (wear or impact damage) and severity of the shaft wall damage. Establishing a physical simulation experimental model and device for chute similarity and conducting chute unloading experiments are the main means to study the movement law of ore and rock in the chute. However, there is currently no relevant equipment that can analyze the movement characteristics of ore and rock during the unloading process of the inclined chute, and there are certain limitations in the research on the movement law of ore and rock in the inclined chute at home and abroad. In addition, the inclination angle of the inclined chute is also one of the main factors affecting the movement law of ore and rock in the inclined chute. Exploring the influence of the inclination angle of the inclined chute on the movement law of ore and rock is of great significance to the design and support of the inclined chute, but there is currently a lack of relevant physical experimental equipment and methods. Summary of the invention

[0003] 1. Problems to be solved

[0004] In view of the problem that there is currently a lack of experimental equipment and methods for unloading ore in inclined chute mines, the present invention provides an experimental equipment and method for unloading ore in an inclined chute mine with adjustable shaft inclination. The shaft of the inclined chute is connected to a fixed bracket through a slideway and a pulley block. The inclination angle of the shaft of the inclined chute is controlled by adjusting the sliding of the pulley to achieve a change in the inclination angle of the inclined chute, so as to carry out unloading experiments in the inclined chute at different inclination angles.

[0005] 2. Technical solution

[0006] To solve the above problems, the present invention adopts the following technical solutions.

[0007] An inclined mine unloading experimental device capable of adjusting the shaft inclination, comprising a shaft device, a fixed support and a inclination adjustment device;

[0008] The shaft device is composed of an inclined shaft and a chute; the fixed bracket is connected and fixed to the ground by a vertical steel plate, a horizontal steel plate and four grounding columns; the inclination adjustment device is composed of a slideway, a pulley block, a tray and a pulley brake lock;

[0009] The inclination adjustment device fixedly connects the wellbore device to the fixed support.

[0010] As a further improvement of the technical solution, the inclined shaft in the shaft device is a transparent square plexiglass tube with open ends, which is composed of four rectangular plexiglass plates connected by angle irons and bolts. An entrance for inserting the chute is reserved on the upper part of the top plate of the inclined shaft.

[0011] As a further improvement of the technical solution, the chute is a square channel without a top plate. The upper end of the chute is connected to two long rectangular iron plates. The bottom of the long rectangular iron plates is connected to a square pipe clamp fixed on the inclined shaft by bolts. The lower end of the chute is inserted into the entrance of the top plate of the inclined shaft and fixed by a hinge.

[0012] As a further improvement of the technical solution, the fixed bracket device is composed of a vertical steel plate and a horizontal steel plate. The horizontal steel plate is fixed to the short side of the vertical steel plate by welding. Four grounding columns are placed at the four corners of the horizontal steel plate respectively, and are fixed with bolts after drilling. The lower part of the grounding column is fixed to the ground by expansion screws.

[0013] As a further improvement of the technical solution, the length and width of the vertical steel plate in the fixed bracket are both greater than the length and width of the inclined shaft.

[0014] As a further improvement of the technical solution, the grounding column is a hollow square steel column with square steel plates at both ends.

[0015] As a further improvement of the technical solution, the inclination adjustment device is divided into a vertical adjustment device and a horizontal adjustment device; the vertical adjustment device is fixed on a rectangular steel plate, and is hinged to the upper part of the inclined shaft through a tray and a hinge, and a vertical aluminum alloy slide is arranged therein; the horizontal adjustment device is fixed on a horizontal steel plate, and is hinged to the lower part of the inclined shaft through a tray and a hinge, and a horizontal aluminum alloy slide is arranged therein.

[0016] As a further improvement of the technical solution, the vertical aluminum alloy slideway and the horizontal aluminum alloy slideway both have a pulley block consisting of 8 pulleys, a pulley brake lock is installed in the pulley block, and a tray is provided above the pulley block.

[0017] As a further improvement of the technical solution, the tray is a square steel plate, which is welded to the pulley block above the vertical aluminum alloy slideway and the horizontal aluminum alloy slideway to support the inclined wellbore; the pulley brake lock is a braking device installed inside the pulley block, and the pulley is locked and braked when the brake switch is pressed.

[0018] An experimental method for unloading ore in an inclined chute mine with adjustable shaft inclination adopts the above experimental device and comprises the following steps:

[0019] The first step is to adjust the inclination adjustment device according to the experimental parameter requirements so that the inclined shaft of the experimental device reaches the specified angle, press the pulley brake lock to fix the inclined shaft, and adjust the position of the chute after fixing so that it will not change due to the change of the inclined shaft angle;

[0020] The second step is to install and debug a slow-motion camera so that it can record and save the movement of the ore blocks in the inclined shaft;

[0021] The third step is to place a rock block on the top of the chute and let it fall freely, and record the movement trajectory, impact position and number of the rock block in the inclined chute;

[0022] Step 4: Release the pulley brake lock, adjust the inclined wellbore angle to meet the requirements of the next experiment, and repeat the first, second and third steps;

[0023] The fifth step is to analyze the influence of the inclined shaft angle on the movement trajectory, impact position and number of ore blocks based on the experimental data recorded by the slow-motion camera.

[0024] 3. Beneficial effects

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] (1) The present invention provides an inclined chute unloading experimental device and method capable of adjusting the shaft inclination, proposes an experimental device and method applicable to the research of unloading ore in an inclined chute mine, and realizes the monitoring of the movement process of ore and rock in the inclined chute;

[0027] (2) The present invention provides an inclined chute ore unloading experimental device and method capable of adjusting the inclination of the shaft, which can effectively solve the problem of adjusting the angle change of the inclined shaft, and can realize arbitrary adjustment of the shaft angle parameters according to the needs of the indoor ore unloading experiment of the inclined shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the structure of the device of the present invention.

[0029] Among them: 1. Rectangular plexiglass plate; 2. Ore chute; 3. Square pipe clamp; 4. Rectangular long iron plate; 5. Hinge; 6. Vertical steel plate; 7. Horizontal steel plate; 8. Grounding column; 9. Bolt; 10. Vertical aluminum alloy slideway; 11. Horizontal aluminum alloy slideway; 12. Pulley block; 13. Tray, 14. Pulley brake lock. DETAILED DESCRIPTION

[0030] Exemplary embodiments of the present invention are described in detail below. Although these exemplary embodiments are described in sufficient detail to enable those skilled in the art to implement the present invention, it should be understood that other embodiments may be implemented and various changes may be made to the present invention without departing from the spirit and scope of the present invention. The more detailed description of the embodiments of the present invention below is not intended to limit the scope of the claimed invention, but is merely for illustration and does not limit the description of the features and characteristics of the present invention, in order to propose the best mode for performing the present invention, and is sufficient to enable those skilled in the art to implement the present invention. Therefore, the scope of the present invention is limited only by the appended claims.

[0031] Example 1

[0032] like Figure 1 As shown, an inclined chute mine unloading experimental device capable of adjusting the inclination of the shaft is composed of a shaft device, a fixed support device, and an inclination adjustment device. The shaft device is composed of an inclined shaft and a chute 2, the fixed support is connected and fixed to the ground by a vertical steel plate 6, a horizontal steel plate 7 and four grounding columns 8, and the inclination adjustment device is composed of a slideway, a pulley block 12, a tray 13 and a pulley brake lock 14.

[0033] The shaft device, the fixed support and the inclination adjustment device are all connected together in a detachable manner—bolts 9 . Furthermore, the shaft device and the inclination adjustment device are connected by hinges 5 , and the inclination adjustment device is fixed to the fixed support device by bolts 9 .

[0034] The inclined shaft in the shaft device is a transparent square organic glass tube with open ends, which is composed of four rectangular organic glass plates 1 connected by angle irons and bolts 9. An entrance for the chute to be inserted is reserved on the upper part of the inclined shaft top plate. The chute is a square channel without a top plate. The upper end of the chute is connected to two rectangular long iron plates 4. The bottom of the rectangular long iron plates 4 is connected to the square pipe clamp 3 fixed on the inclined shaft by bolts 9. The lower end of the chute is inserted into the entrance of the inclined shaft top plate and fixed by hinges 5.

[0035] More specifically, the square pipe clamp 3 is clamped on the inclined shaft by bolts 9, and a distance between the two rectangular long iron plates 4 is hollowed out for the bolts to adjust the position up and down, and the lower part is provided with screw holes, which are fixed to the square pipe clamp 3 by bolts 9. The chute 2 is placed between the two rectangular long iron plates 4, and the bolts 9 are passed through the hollow positions of the rectangular long iron plates 4 to fix the chute. The lower part of the chute 2 is inserted into the chute entrance of the inclined shaft, and is connected to the inclined shaft by hinges 5 and bolts 9.

[0036] The fixed bracket device is composed of a vertical steel plate 6 and a horizontal steel plate 7. The horizontal steel plate 7 is fixed to the short side of the vertical steel plate 6 by welding. Four grounding columns 8 are placed at the four corners of the horizontal steel plate 7, and are fixed with bolts 9 after drilling. The lower part of the grounding column 8 is fixed to the ground by expansion screws. The length and width of the vertical steel plate 6 in the fixed bracket are greater than the length and width of the inclined shaft. The grounding column 8 is a hollow square steel column with square steel plates at both ends.

[0037] The tilt adjustment device is divided into a vertical adjustment device and a horizontal adjustment device; the vertical adjustment device is fixed on the rectangular steel plate 6, and is hinged to the upper part of the inclined shaft through the tray 13 and the hinge 5, and a vertical aluminum alloy slide 10 is arranged inside it. The horizontal adjustment device is fixed on the horizontal steel plate 7, and is hinged to the lower part of the inclined shaft through the tray 13 and the hinge 5, and a horizontal aluminum alloy slide 11 is arranged inside it.

[0038] The vertical aluminum alloy slideway 10 and the horizontal aluminum alloy slideway 11 both have a pulley block 12 consisting of 8 pulleys, a pulley brake lock 14 is installed in the pulley block, and a tray 13 is provided above the pulley block. The tray 13 is a square steel plate, which is welded to the pulley block 12 above the vertical aluminum alloy slideway 10 and the horizontal aluminum alloy slideway 11, and is used to support the inclined shaft. The pulley brake lock 14 is a braking device installed inside the pulley block 12, and the pulley is locked and braked after the brake switch is pressed. The inclination angle of the shaft device is changed by the movement of the pulley block 12, and the device will no longer move after the pulley brake lock 14 is locked, thereby achieving the purpose of adjusting the inclination angle at any time.

[0039] When using this device:

[0040] The first step is to adjust the inclination adjustment device according to the experimental parameter requirements so that the inclined shaft of the experimental device reaches a specified angle, press the pulley brake lock 14 to fix the inclined shaft, and adjust the position of the chute 2 after fixing so that it will not change due to the change of the inclined shaft angle;

[0041] The second step is to install and debug a slow-motion camera so that it can record and save the movement of the ore blocks in the inclined shaft;

[0042] The third step is to place a rock block on the top of the chute 2 and let it fall freely, and record the movement trajectory, impact position and number of the rock block in the inclined chute;

[0043] Step 4: release the pulley brake lock 14, adjust the inclined wellbore angle to meet the requirements of the next experiment, and repeat the first, second and third steps;

[0044] The fifth step is to analyze the influence of the inclined shaft angle on the movement trajectory, impact position and number of ore blocks based on the experimental data recorded by the slow-motion camera.

[0045] The examples described in the present invention are merely descriptions of the preferred implementation modes of the present invention, and are not intended to limit the concept and scope of the present invention. Without departing from the design concept of the present invention, various modifications and improvements made to the technical solutions of the present invention by engineers and technicians in this field should all fall within the protection scope of the present invention.

Claims

1. An inclined mine unloading experimental device capable of adjusting the shaft inclination, characterized in that: It includes a wellbore device, a fixed support and an inclination adjustment device; The shaft device is composed of an inclined shaft and a chute (2); the fixed bracket is connected and fixed to the ground by a vertical steel plate (6), a horizontal steel plate (7) and four grounding columns (8); the inclination adjustment device is composed of a slideway, a pulley block (12), a tray (13) and a pulley brake lock (14); The inclination adjustment device fixedly connects the wellbore device to the fixed support.

2. The inclined mine unloading experimental device capable of adjusting the shaft inclination according to claim 1 is characterized in that: The inclined shaft in the shaft device is a transparent square organic glass tube with open ends, which is composed of four rectangular organic glass plates (1) connected by angle irons and bolts (9). An entrance for inserting a chute is reserved on the upper part of the top plate of the inclined shaft.

3. The inclined mine unloading experimental device capable of adjusting the shaft inclination according to claim 2 is characterized in that: The ore chute is a square channel without a top plate. The upper end of the ore chute is connected to two rectangular long iron plates (4). The bottom of the rectangular long iron plates (4) is connected to a square pipe clamp (3) fixed on the inclined shaft through bolts (9). The lower end of the ore chute is inserted into the entrance of the top plate of the inclined shaft and fixed by a hinge (5).

4. The inclined mine unloading experimental device capable of adjusting the shaft inclination according to claim 1 is characterized in that: The fixing bracket device is composed of a vertical steel plate (6) and a horizontal steel plate (7). The short sides of the horizontal steel plate (7) and the vertical steel plate (6) are welded and fixed. Four grounding columns (8) are respectively placed at the four corners of the horizontal steel plate (7), and are fixed with bolts (9) after being punched. The lower part of the grounding column (8) is fixed to the ground by expansion screws.

5. The inclined mine unloading experimental device capable of adjusting the shaft inclination according to claim 4 is characterized in that: The length and width of the vertical steel plate (6) in the fixed bracket are both greater than the length and width of the inclined shaft.

6. The inclined mine unloading experimental device capable of adjusting the shaft inclination according to claim 4 is characterized in that: The grounding column (8) is a hollow square steel column with square steel plates at both ends.

7. The inclined mine unloading experimental device capable of adjusting the shaft inclination according to claim 1 is characterized in that: The inclination adjustment device is divided into a vertical adjustment device and a horizontal adjustment device; the vertical adjustment device is fixed on a rectangular steel plate (6), and is hinged to the upper part of the inclined shaft through a tray (13) and a hinge (5), and a vertical aluminum alloy slideway (10) is arranged therein; the horizontal adjustment device is fixed on a horizontal steel plate (7), and is hinged to the lower part of the inclined shaft through a tray (13) and a hinge (5), and a horizontal aluminum alloy slideway (11) is arranged therein.

8. The inclined mine unloading experimental device capable of adjusting the shaft inclination according to claim 7 is characterized in that: The vertical aluminum alloy slideway (10) and the horizontal aluminum alloy slideway (11) are both provided with a pulley block (12) consisting of 8 pulleys, a pulley brake lock (14) is installed in the pulley block, and a tray (13) is provided above the pulley block.

9. The inclined mine unloading experimental device capable of adjusting the shaft inclination according to claim 8 is characterized in that: The tray (13) is a square steel plate, which is welded to the pulley block (12) above the vertical aluminum alloy slideway (10) and the horizontal aluminum alloy slideway (11) and is used to support the inclined shaft; the pulley brake lock (14) is a braking device installed inside the pulley block (12), and the pulley is locked and braked when the brake switch is pressed.

10. An experimental method for unloading ore in an inclined mine with adjustable shaft inclination, using the experimental device described in any one of claims 1 to 9, characterized in that: The steps include: The first step is to adjust the inclination adjustment device according to the experimental parameter requirements so that the inclined shaft of the experimental device reaches a specified angle, press the pulley brake lock (14) to fix the inclined shaft, and adjust the position of the chute (2) after fixing so that it will not change due to the change of the inclined shaft angle; The second step is to install and debug a slow-motion camera so that it can record and save the movement of the ore blocks in the inclined shaft; The third step is to place a rock block on the top of the ore chute (2) and allow it to fall freely, and record the movement trajectory, impact position and number of the rock block in the inclined chute; Step 4: Release the pulley brake lock (14), adjust the inclined wellbore angle to meet the requirements of the next experiment, and repeat the first, second and third steps; The fifth step is to analyze the influence of the inclined shaft angle on the movement trajectory, impact position and number of ore blocks based on the experimental data recorded by the slow-motion camera.

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