Conveying device for iron ore mining and conveying method thereof

Abstract

The invention discloses a conveying device for iron ore mining and a conveying method thereof, and relates to the field of conveying devices.The conveying device comprises a supporting base, a conveyor body is installed on the supporting base, a driving bin is installed at the bottom of the conveyor body, and conveying rollers are arranged on the conveyor body; the positioning guide block is provided with a counterweight adjusting piece connected with the positioning insertion plate, and the top of the positioning insertion plate is provided with a limiting warning piece. By arranging the counterweight adjusting part, when the conveying roller rotates, a movable sliding block slowly reciprocates along a reciprocating lead screw, when a second static contact piece makes contact with a second movable contact piece, an electromagnetic valve is powered on and opened, and at the moment, a positioning pressing roller can press a conveying belt under the gravity effect of a counterweight block; and the conveying belt, the conveying roller and the positioning pressing roller are in an attached state, so that the conveying belt is prevented from being in a loose state, the tensioning degree of the conveying belt is adjusted in a self-adaptive mode, and the labor intensity of workers is relieved.

Description

Technical Field

[0001] The invention relates to the field of conveying devices, in particular to a conveying device and a conveying method used in iron ore mining. Background Art

[0002] After the iron ore is broken into small pieces by the crusher, it needs to be transferred over a short distance through a conveying device. It is now transferred by belt conveyor. The iron ore is transported to the designated location by the conveyor belt. After long-term use, the belt conveyor often becomes loose due to the problem of belt elongation. At this time, the staff is required to tighten and adjust the conveyor belt.

[0003] Generally, the position of the belt roller is adjusted by bolts, and the tension of the conveyor belt is adjusted by moving the belt roller. However, in this process, the staff needs to check the tension of the conveyor belt from time to time and then adjust the conveyor belt. This not only increases the labor intensity of the staff, but also makes it impossible to adjust the tension of the conveyor belt in time, thus affecting the conveying effect. Summary of the invention

[0004] The purpose of the present invention is to provide a conveying device and a conveying method for iron ore mining in order to solve the problem that the conveying belt cannot be tensioned and adjusted in time.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a conveying device used in iron ore mining, comprising a support seat, a conveyor body is installed on the support seat, a driving bin is installed at the bottom of the conveyor body, a conveying roller is arranged on the conveyor body, a conveying belt is installed on the outer side of the conveying roller, the driving bin drives the conveying belt to rotate through the conveying roller, positioning guide blocks are installed on both sides of the conveyor body, a positioning plug plate that penetrates to the bottom of the positioning guide block is inserted at the top of the positioning guide block, one side of the positioning plug plate is rotatably connected to the positioning pressure roller through a bearing, the positioning pressure roller is located below the positioning guide block and fits against the inner wall of the conveying belt, a counterweight adjustment member connected to the positioning plug plate is installed on the positioning guide block, and a limit warning member is installed on the top of the positioning plug plate.

[0006] As a further solution of the present invention: the counterweight adjustment member includes a counterweight block installed at the bottom end of the positioning plug plate, a second side plate is installed on the side of the positioning guide block away from the conveyor body, a first sleeve is installed on the second side plate, a first piston rod extending to the top of the first sleeve is inserted inside the first sleeve, a first side plate located above the positioning guide block and connected to the positioning plug plate is installed on the top of the first piston rod, an electromagnetic valve is installed at the bottom end of the first sleeve, a connecting frame is installed on one side of the positioning guide block, a second sleeve is installed on the connecting frame, a second piston rod extending to the outside of the second sleeve is inserted inside the second sleeve, and the second piston rod A return spring connected with the second sleeve is arranged on it, a reducer is installed at one end of the conveying roller, a positioning block is installed on the outer side of the reducer, one end of the reducer is connected to a reciprocating screw located on the inner side of the positioning block, a movable slider is movably sleeved on the reciprocating screw, a through hole located above the reciprocating screw is opened on the movable slider, an extension rod located above the reciprocating screw is installed on the inner wall of the positioning block, a second static contact piece is installed on the end of the extension rod close to the movable slider, a telescopic spring is installed on the side of the movable slider away from the extension rod, a second moving contact piece is installed on the end of the telescopic spring away from the through hole, and a hose connected with the solenoid valve is arranged on the second sleeve.

[0007] As a further solution of the present invention: the second moving contact piece is electrically connected to an external power source through a wire, and the second stationary contact piece is electrically connected to a solenoid valve through a wire.

[0008] As a further solution of the present invention: the centers of the extension rod, the through hole, the second moving contact piece and the second stationary contact piece are coaxial, and the diameters of the second stationary contact piece and the through hole are equal.

[0009] As a further solution of the present invention: the edge of the movable slider is in contact with the inner wall of the positioning block, and the movable slider is provided with a crescent pin that matches the outer side of the reciprocating screw.

[0010] As a further solution of the present invention: the limit warning component includes a U-shaped bracket installed on the top of the positioning guide block and located on the outside of the positioning plug plate, a buzzer is installed on the top of the U-shaped bracket, an L-shaped connecting rod located above the first side plate is installed on one side of the U-shaped bracket, a guide groove is provided on the side of the L-shaped connecting rod away from the U-shaped bracket, a bellows is installed on the inner side of the guide groove, a pressure plate connected to the first side plate is installed on the top of the bellows, a first moving contact piece located on the inner side of the bellows is installed on the bottom of the pressure plate, and a first static contact piece located below the first moving contact piece and on the inner side of the bellows is installed on the inner side of the guide groove.

[0011] As a further solution of the present invention: the first moving contact piece is electrically connected to the buzzer through a wire, and the first stationary contact piece is electrically connected to an external power supply through a wire.

[0012] As a further solution of the present invention: the diameters of the first moving contact piece and the first stationary contact piece are both smaller than the inner wall diameter of the bellows, and the diameter of the bellows is smaller than the width of the guide slot.

[0013] As a further solution of the present invention: the distance between the first moving contact piece and the first stationary contact piece is equal to the movable distance of the first piston rod.

[0014] The present invention also discloses a conveying method for iron ore mining, which uses the above-mentioned conveying device for iron ore mining and comprises the following steps: S1: Install the conveying device as a whole at a designated position through a support base; S2: Start the driving chamber, and the conveying roller drives the conveying belt to rotate through the operation of the driving chamber. At this time, the positioning roller will rotate with the rotation of the conveying belt; S3: The iron ore is placed on the top of the conveyor belt and the conveyor belt is rotated to convey the iron ore. During this process, the counterweight adjustment member is used to make the positioning roller intermittently press the conveyor belt to adjust the tension of the conveyor belt to prevent the conveyor belt from being in a loose state. S4: When adjusting the tension of the conveyor belt, the state of the conveyor belt is detected by the limit warning member.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. By setting a counterweight adjustment part, when the conveying roller rotates, the movable slider moves slowly back and forth along the reciprocating screw rod. When the second static contact piece contacts the second moving contact piece, the solenoid valve is powered on and opened. At this time, the positioning roller will press the conveying belt under the gravity of the counterweight block, so that the conveying belt, the conveying roller and the positioning roller are in a fitting state, so as to prevent the conveying belt from being in a loose state. The aqueous solution inside the first sleeve enters the second sleeve through the solenoid valve and the hose. When the second moving contact piece is separated from the second static contact piece, the solenoid valve is powered off and closed, so as to fix the positioning plug plate, so as to prevent the weight of the counterweight block from acting on the conveying belt for a long time, thereby adaptively adjusting the tension of the conveying belt and reducing the labor intensity of the staff; 2. By setting a counterweight adjustment piece, when the first piston rod moves downward with the positioning plug plate, the pressure plate will drive the first moving contact piece to move downward. As the conveyor belt is used for a long time, the height of the positioning plug plate will decrease. At this time, the stretch of the conveyor belt will also increase. When the first moving contact piece contacts the first static contact piece, the buzzer is energized to operate, so as to warn the staff. At this time, the staff can replace the conveyor belt in time to prevent the conveying effect from being affected by the excessive stretch of the conveyor belt. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 is a side view of the present invention; Figure 3 It is a schematic diagram of the connection between the plug board and the second sleeve of the present invention; Figure 4 It is a schematic diagram of the connection between the first sleeve and the first piston rod of the present invention; Figure 5 It is a schematic diagram of the connection between the second sleeve and the second piston rod of the present invention; Figure 6 It is a schematic diagram of the internal structure of the positioning block of the present invention; Figure 7 It is a structural schematic diagram of the limit warning member of the present invention; Figure 8 It is a schematic diagram of the connection between the positioning plug plate and the positioning pressure roller of the present invention.

[0017] In the figure: 1, support seat; 2, drive compartment; 3, conveyor roller; 4, positioning guide block; 5, conveyor belt; 601, positioning plug plate; 602, positioning pressure roller; 603, counterweight block; 604, buzzer; 605, positioning block; 606, reducer; 607, first sleeve; 608, first piston rod; 609, L-shaped connecting rod; 610, U-shaped support frame; 611, guide slide; 612, first side plate; 613, bellows; 614, Second side plate; 615, hose; 616, solenoid valve; 617, second sleeve; 618, return spring; 619, second piston rod; 620, connecting frame; 621, pressure plate; 622, first static contact piece; 623, first moving contact piece; 624, reciprocating screw rod; 625, movable slider; 626, second moving contact piece; 627, telescopic spring; 628, through hole; 629, second static contact piece; 630, extension rod; 7, conveyor body. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal connection of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. The following is an explanation of an embodiment of the present invention based on the overall structure of the present invention.

[0020] See also Figures 1 to 8 In an embodiment of the present invention, a conveying device used in iron ore mining includes a support seat 1, a conveyor body 7 is installed on the support seat 1, a driving bin 2 is installed at the bottom of the conveyor body 7, a conveying roller 3 is arranged on the conveyor body 7, a conveying belt 5 is installed on the outer side of the conveying roller 3, the driving bin 2 drives the conveying belt 5 to rotate through the conveying roller 3, positioning guide blocks 4 are installed on both sides of the conveyor body 7, a positioning plug plate 601 that penetrates to the bottom of the positioning guide block 4 is inserted at the top of the positioning guide block 4, one side of the positioning plug plate 601 is rotatably connected to the positioning pressure roller 602 through a bearing, the positioning pressure roller 602 is located below the positioning guide block 4 and fits against the inner wall of the conveying belt 5, a counterweight adjustment member connected to the positioning plug plate 601 is installed on the positioning guide block 4, and a limit warning member is installed on the top of the positioning plug plate 601.

[0021] In this embodiment: the conveying device is installed as a whole at the specified position through the support seat 1, and then the driving bin 2 is started. The conveying roller 3 drives the conveying belt 5 to rotate through the operation of the driving bin 2. At this time, the positioning roller 602 will rotate with the rotation of the conveying belt 5. Then, the iron ore is placed on the top of the conveying belt 5, and the iron ore is transported by the rotation of the conveying belt 5. In this process, the positioning roller 602 is used to intermittently press the conveying belt 5 through the counterweight adjustment member to adjust the tension of the conveying belt 5 to prevent the conveying belt 5 from being in a loose state. When adjusting the tension of the conveying belt 5, the state of the conveying belt 5 is detected through the limit warning member to prevent the conveying belt 5 from being excessively pulled and stretched and affecting the conveying effect.

[0022] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 The counterweight adjustment member includes a counterweight block 603 installed at the bottom end of the positioning plug plate 601, a second side plate 614 is installed on the side of the positioning guide block 4 away from the conveyor body 7, a first sleeve 607 is installed on the second side plate 614, a first piston rod 608 extending to the top of the first sleeve 607 is inserted inside the first sleeve 607, a first side plate 612 located above the positioning guide block 4 and connected to the positioning plug plate 601 is installed on the top of the first piston rod 608, a solenoid valve 616 is installed at the bottom end of the first sleeve 607, a connecting frame 620 is installed on one side of the positioning guide block 4, a second sleeve 617 is installed on the connecting frame 620, a second piston rod 619 extending to the outside of the second sleeve 617 is inserted inside the second sleeve 617, and a reset valve connected to the second sleeve 617 is provided on the second piston rod 619 Spring 618, a reducer 606 is installed at one end of the conveying roller 3, a positioning block 605 is installed on the outer side of the reducer 606, one end of the reducer 606 is connected to a reciprocating screw 624 located on the inner side of the positioning block 605, a movable slider 625 is movably sleeved on the reciprocating screw 624, and a through hole 628 located above the reciprocating screw 624 is opened on the movable slider 625, an extension rod 630 located above the reciprocating screw 624 is installed on the inner wall of the positioning block 605, a second static contact piece 629 is installed at one end of the extension rod 630 close to the movable slider 625, a telescopic spring 627 is installed on the side of the movable slider 625 away from the extension rod 630, a second moving contact piece 626 is installed at one end of the telescopic spring 627 away from the through hole 628, and a hose 615 connected to the solenoid valve 616 is provided on the second sleeve 617.

[0023] In this embodiment: when the conveying roller 3 rotates, the reciprocating screw 624 is slowly rotated relative to the positioning block 605 through the reducer 606, so that the movable slider 625 is slowly reciprocating along the reciprocating screw 624. When the through hole 628 moves toward the second static contact piece 629, the second static contact piece 629 passes through the through hole 628 and contacts the second movable contact piece 626. At this time, the solenoid valve 616 is energized and opened. At this time, the positioning roller 602 will press the conveying belt 5 under the gravity of the counterweight block 603, so that the conveying belt 5 is in a fitting state with the conveying roller 3 and the positioning roller 602, so as to prevent the conveying belt 5 from being in a loose state. When the counterweight block 603 moves downward, the first piston rod 601 and the first side plate 612 are pressed against the first piston rod 602. 608 is pressed, so that the aqueous solution inside the first sleeve 607 enters the second sleeve 617 through the electromagnetic valve 616 and the hose 615. At this time, the second piston rod 619 moves in the direction away from the second sleeve 617 as the aqueous solution is injected. When the movable slider 625 moves in the direction away from the extension rod 630, the second movable contact piece 626 is separated from the second static contact piece 629. At this time, the electromagnetic valve 616 is powered off and closed, so that the aqueous solution inside the first sleeve 607 loses its flow space, thereby fixing the positioning plug plate 601, thereby preventing the weight of the counterweight block 603 from acting on the conveyor belt 5 for a long time. In this way, the tension of the conveyor belt 5 can be adaptively adjusted repeatedly, thereby reducing the labor intensity of the staff.

[0024] Please refer to Figure 3 , Figure 6 The second moving contact piece 626 is electrically connected to the external power supply through a wire, and the second stationary contact piece 629 is electrically connected to the solenoid valve 616 through a wire.

[0025] In this embodiment: by providing this structure, the electromagnetic valve 616 is energized and operated when the second movable contact piece 626 contacts the second stationary contact piece 629, thereby controlling the operation timing of the electromagnetic valve 616.

[0026] Please refer to Figure 6 The extension rod 630, the through hole 628, the second moving contact piece 626, and the second stationary contact piece 629 are coaxial, and the diameters of the second stationary contact piece 629 and the through hole 628 are equal.

[0027] In this embodiment: this structure is provided to improve the docking accuracy between the second stationary contact piece 629 and the second movable contact piece 626, and at the same time, when the second stationary contact piece 629 contacts the telescopic spring 627, the movable slider 625 continues to move toward the extension rod 630, thereby controlling the power-on time of the solenoid valve 616.

[0028] Please refer to Figure 6The edge of the movable slider 625 fits with the inner wall of the positioning block 605 , and a crescent pin matching the outer side of the reciprocating screw rod 624 is provided on the movable slider 625 .

[0029] In this embodiment: by setting this structure, when the reciprocating screw 624 rotates, the movable slider 625 moves horizontally back and forth along the reciprocating screw 624, so that the movable slider 625 moves stably.

[0030] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 7 The limit warning member includes a U-shaped support frame 610 installed on the top of the positioning guide block 4 and located on the outside of the positioning plug plate 601, a buzzer 604 is installed on the top of the U-shaped support frame 610, an L-shaped connecting rod 609 located above the first side plate 612 is installed on one side of the U-shaped support frame 610, and a guide groove 611 is provided on the side of the L-shaped connecting rod 609 away from the U-shaped support frame 610, a bellows 613 is installed on the inner side of the guide groove 611, a pressure plate 621 connected to the first side plate 612 is installed on the top of the bellows 613, a first moving contact piece 623 located on the inner side of the bellows 613 is installed on the bottom of the pressure plate 621, and a first static contact piece 622 located below the first moving contact piece 623 and on the inner side of the bellows 613 is installed on the inner side of the guide groove 611.

[0031] In this embodiment: when the first piston rod 608 moves downward with the positioning plug plate 601, the pressure plate 621 will drive the first moving contact piece 623 to move downward. As the conveyor belt 5 is used for a long time, the height of the positioning plug plate 601 will be reduced. At this time, the extension amount of the conveyor belt 5 will also increase. When the first moving contact piece 623 contacts the first static contact piece 622, the buzzer 604 is powered on to operate, so as to warn the staff. At this time, the staff can replace the conveyor belt 5 in time to prevent the conveying effect from being affected by the excessive extension amount of the conveyor belt 5.

[0032] Please refer to Figure 4 , Figure 7 The first moving contact piece 623 is electrically connected to the buzzer 604 through a wire, and the first stationary contact piece 622 is electrically connected to the external power supply through a wire.

[0033] In this embodiment, by providing this structure, the buzzer 604 is powered on and operates when the first movable contact piece 623 contacts the first stationary contact piece 622 , thereby controlling the operation timing of the buzzer 604 .

[0034] Please refer to Figure 4The diameters of the first moving contact piece 623 and the first stationary contact piece 622 are both smaller than the inner wall diameter of the bellows 613 , and the diameter of the bellows 613 is smaller than the width of the guide slot 611 .

[0035] In this embodiment, this structure is provided to improve the smoothness of the contraction of the bellows 613 , and also to improve the precision of the docking between the first moving contact piece 623 and the first stationary contact piece 622 .

[0036] Please refer to Figure 4 , the distance between the first moving contact piece 623 and the first stationary contact piece 622 is equal to the movable distance of the first piston rod 608 .

[0037] In this embodiment, by providing this structure, when the first piston rod 608 moves to the lowest point, the first moving contact piece 623 contacts the first stationary contact piece 622 .

[0038] In combination with the above-mentioned conveying method for iron ore mining, a conveying device for iron ore mining is provided, which specifically includes the following steps: S1: Install the conveying device as a whole at a designated position through the support base 1; S2: Start the driving chamber 2, and the conveying roller 3 drives the conveying belt 5 to rotate through the operation of the driving chamber 2. At this time, the positioning roller 602 rotates with the rotation of the conveying belt 5; S3: placing the iron ore on the top of the conveyor belt 5, and conveying the iron ore by rotating the conveyor belt 5; S4: When the conveying roller 3 rotates, the reciprocating screw 624 is slowly rotated relative to the positioning block 605 through the reducer 606, so that the movable slider 625 is slowly reciprocating along the reciprocating screw 624. When the through hole 628 moves toward the second static contact piece 629, the second static contact piece 629 passes through the through hole 628 and contacts the second movable contact piece 626. At this time, the solenoid valve 616 is energized and opened. At this time, the positioning roller 602 will press the conveying belt 5 under the gravity of the counterweight block 603, so that the conveying belt 5 is in a fitting state with the conveying roller 3 and the positioning roller 602, so as to prevent the conveying belt 5 from being in a loose state. S5: When the counterweight 603 moves downward, the first piston rod 608 is pressed through the positioning plug plate 601 and the first side plate 612, so that the aqueous solution in the first sleeve 607 enters the second sleeve 617 through the electromagnetic valve 616 and the hose 615. At this time, the second piston rod 619 moves in the direction away from the second sleeve 617 as the aqueous solution is injected. When the movable slider 625 moves in the direction away from the extension rod 630, the second movable contact piece 626 separates from the second static contact piece 629. At this time, the electromagnetic valve 616 is powered off and closed, so that the aqueous solution in the first sleeve 607 loses the flow space, thereby fixing the positioning plug plate 601, so as to prevent the weight of the counterweight 603 from acting on the conveyor belt 5 for a long time. In this way, the tension of the conveyor belt 5 can be adaptively adjusted repeatedly, thereby reducing the labor intensity of the staff; S6: When the first piston rod 608 moves downward with the positioning plate 601, the pressure plate 621 will drive the first moving contact piece 623 to move downward. As the conveyor belt 5 is used for a long time, the height of the positioning plate 601 will be reduced. At this time, the extension amount of the conveyor belt 5 will also increase. When the first moving contact piece 623 contacts the first static contact piece 622, the buzzer 604 is powered on to operate, so as to warn the staff. At this time, the staff can replace the conveyor belt 5 in time to prevent the conveying effect from being affected by the excessive extension amount of the conveyor belt 5.

[0039] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A conveying device for iron ore mining, comprising a support seat (1), characterized in that: A conveyor body (7) is mounted on the support seat (1), a driving bin (2) is mounted at the bottom of the conveyor body (7), a conveying roller (3) is arranged on the conveyor body (7), a conveying belt (5) is mounted on the outer side of the conveying roller (3), the driving bin (2) drives the conveying belt (5) to rotate through the conveying roller (3), positioning guide blocks (4) are mounted on both sides of the conveyor body (7), a positioning plug plate (601) penetrating to the bottom of the positioning guide block (4) is plugged into the top of the positioning guide block (4), one side of the positioning plug plate (601) is rotatably connected to a positioning pressure roller (602) via a bearing, the positioning pressure roller (602) is located below the positioning guide block (4) and is in contact with the inner wall of the conveying belt (5), a counterweight adjustment member connected to the positioning plug plate (601) is mounted on the positioning guide block (4), and a limit warning member is mounted on the top of the positioning plug plate (601).

2. The conveying device for iron ore mining according to claim 1, characterized in that: The counterweight adjustment member comprises a counterweight block (603) mounted on the bottom end of a positioning plug plate (601); a second side plate (614) is mounted on the side of the positioning guide block (4) away from the conveyor body (7); a first sleeve (607) is mounted on the second side plate (614); a first piston rod (608) extending to the top of the first sleeve (607) is inserted into the interior of the first sleeve (607); a piston rod (608) located above the positioning guide block (4) and aligned with the positioning guide block (601) is mounted on the top end of the first piston rod (608); A first side plate (612) connected to the plug plate (601), a solenoid valve (616) is installed at the bottom end of the first sleeve (607), a connecting frame (620) is installed on one side of the positioning guide block (4), a second sleeve (617) is installed on the connecting frame (620), a second piston rod (619) extending to the outside of the second sleeve (617) is inserted into the interior of the second sleeve (617), and a return spring (619) connected to the second sleeve (617) is provided on the second piston rod (619). 618), a reducer (606) is installed at one end of the conveying roller (3), a positioning block (605) is installed on the outer side of the reducer (606), one end of the reducer (606) is connected to a reciprocating screw (624) located on the inner side of the positioning block (605), a movable slider (625) is movably sleeved on the reciprocating screw (624), a through hole (628) is opened on the movable slider (625) and is located above the reciprocating screw (624), and the inner wall of the positioning block (605) is installed An extension rod (630) is located above the reciprocating screw rod (624); a second stationary contact piece (629) is installed at one end of the extension rod (630) close to the movable slider (625); a telescopic spring (627) is installed at one side of the movable slider (625) away from the extension rod (630); a second movable contact piece (626) is installed at one end of the telescopic spring (627) away from the through hole (628); and a hose (615) connected to the solenoid valve (616) is provided on the second sleeve (617).

3. The conveying device for iron ore mining according to claim 2, characterized in that: The second moving contact piece (626) is electrically connected to an external power source via a wire, and the second stationary contact piece (629) is electrically connected to the solenoid valve (616) via a wire.

4. The conveying device for iron ore mining according to claim 2, characterized in that: The extension rod (630), the through hole (628), the second moving contact piece (626), and the second stationary contact piece (629) are coaxial in center, and the diameters of the second stationary contact piece (629) and the through hole (628) are equal.

5. The conveying device for iron ore mining according to claim 2, characterized in that: The edge of the movable slider (625) fits against the inner wall of the positioning block (605), and the movable slider (625) is provided with a crescent pin that matches the outer side of the reciprocating screw rod (624).

6. The conveying device for iron ore mining according to claim 2, characterized in that: The limit warning member comprises a U-shaped support frame (610) installed on the top of the positioning guide block (4) and located outside the positioning plug plate (601), a buzzer (604) is installed on the top of the U-shaped support frame (610), an L-shaped connecting rod (609) located above the first side plate (612) is installed on one side of the U-shaped support frame (610), and a guide groove (611) is provided on the side of the L-shaped connecting rod (609) away from the U-shaped support frame (610). A bellows (613) is installed on the inner side of the guide groove (611); a pressure plate (621) connected to the first side plate (612) is installed on the top of the bellows (613); a first moving contact piece (623) located on the inner side of the bellows (613) is installed on the bottom of the pressure plate (621); and a first stationary contact piece (622) located below the first moving contact piece (623) and on the inner side of the bellows (613) is installed on the inner side of the guide groove (611).

7. The conveying device for iron ore mining according to claim 6, characterized in that: The first moving contact piece (623) is electrically connected to the buzzer (604) via a wire, and the first stationary contact piece (622) is electrically connected to an external power source via a wire.

8. The conveying device for iron ore mining according to claim 6, characterized in that: The diameters of the first moving contact piece (623) and the first stationary contact piece (622) are both smaller than the inner wall diameter of the bellows (613), and the diameter of the bellows (613) is smaller than the width of the guide slide groove (611).

9. The conveying device for iron ore mining according to claim 6, characterized in that: The distance between the first moving contact piece (623) and the first stationary contact piece (622) is equal to the movable distance of the first piston rod (608).

10. A method for conveying iron ore for mining, characterized in that: The conveying device for iron ore mining according to any one of claims 1 to 9 comprises the following steps: S1: installing the entire conveying device at a designated position via a support base (1); S2: starting the driving chamber (2), and causing the conveying roller (3) to drive the conveying belt (5) to rotate through the operation of the driving chamber (2), and at this time, the positioning pressure roller (602) will rotate along with the rotation of the conveying belt (5); S3: placing iron ore on top of the conveyor belt (5), and conveying the iron ore by rotating the conveyor belt (5). During this process, the positioning roller (602) is pressed intermittently on the conveyor belt (5) by the counterweight adjustment member, thereby adjusting the tension of the conveyor belt (5) to prevent the conveyor belt (5) from being in a loose state; S4: When adjusting the tension of the conveyor belt (5), the state of the conveyor belt (5) is detected by means of the limit warning member.

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