Automatic large block cleaning device for draw shaft grating and using method of automatic large block cleaning device

Abstract

The invention discloses an automatic block cleaning device for a draw shaft grating and a using method thereof. The automatic block cleaning device comprises the draw shaft grating (1). The grid hinge (2) is hinged between one side of the draw shaft grid and a draw shaft mouth; the first position sensor (3) is mounted at the position, right opposite to the ground, of the lower surface of the other side of the draw shaft grating; the first weight sensor (4) is mounted at the position, right opposite to the ground, of the lower surface of the other side of the draw shaft grating; a grille cylinder (5); a front baffle (6); a second position sensor (7); and a second weight sensor (8). The full-automatic ore drawing machine has the beneficial effects that full-automatic operation circulation is achieved, through linkage of the weight sensor, the position sensor and the hydraulic station, full-process operation such as ore drawing, large block detection, unloading and equipment resetting can be completed without manual intervention, the labor cost is greatly reduced, and manual operation errors are reduced.

Description

Technical Field

[0001] This invention relates to the field of ore pass technology, and in particular to an automatic cleaning device for large pieces of ore pass grids and its usage method. Background Technology

[0002] Ore pass discharge is a method of dumping ore from top to bottom using its own weight. In mining operations, because mines are often very high and ore transportation is frequent, to improve transportation efficiency and save costs, a shaft-like pipe is often dug from top to bottom in some mines. Ore is dumped directly from top to bottom, and transport vehicles wait underground for direct transport. The common ore pass discharge method involves installing a horizontal grid at the top of the pass. Small pieces of ore pass through the grid into the pass, while larger pieces remain on top. The larger pieces are then manually broken up with a sledgehammer before entering the pass. Alternatively, some mines use mechanical or remotely controlled hydraulic breakers to break up the larger pieces of ore before they enter the pass.

[0003] For example, Chinese invention patent publication number CN108278126A discloses an intelligent ore pass system, including an ore pass, a screen, an image recognition system, and a crushing device. The screen is installed at an angle at the entrance of the ore pass. The image recognition system includes a camera module, a communication module, and a central processing unit (CPU). The camera module and the communication module are both connected to the CPU. The camera module includes several video cameras installed above the screen. The crushing device includes a breaker hammer installed above the screen and a crushing drive device that controls its movement and impact. The crushing drive device is connected to the communication module. This patent utilizes the image recognition system to locate large pieces of ore on the screen, thereby controlling the breaker hammer to automatically crush the target ore.

[0004] For example, Chinese utility model publication CN221515204U discloses an intelligent dredging device for mine chute grates, including a hydraulic breaker system. The hydraulic breaker system is located at the bottom of a settling trough on one side of the chute grates, and a visual point cloud camera is installed on the wall of the settling trough. Angle encoders are installed at the joints connecting the breaker's forearm and upper arm, the joint connecting the breaker's upper arm and rotating base, and the joint connecting the hydraulic breaker head and forearm. These angle encoders transmit angle data from each part to the host computer in the control unit via an R422 bus to analyze whether the combined motion trajectory of the motion mechanism is close to the target path.

[0005] Both of the above patents involve using an automatically controlled breaker to break up large pieces of ore before they enter the ore pass. This has several drawbacks: first, it causes impact vibration to the ore pass screen, shortening its lifespan; second, the automatic control system itself has a complex structure, resulting in high manufacturing and maintenance costs; third, the loader's dumping operation needs to be paused during the cleaning process, leading to frequent interruptions and reduced utilization of the loader equipment, severely disrupting the continuous rhythm of ore transfer; and fourth, the cleaning process is time-consuming, directly reducing the turnover efficiency of the screen. Summary of the Invention

[0006] The technical problem to be solved by the present invention is that the existing ore pass screens have shortened lifespan due to automated crushing of large ore pieces, resulting in additional maintenance costs and affecting normal operation. To address this, the present invention provides an automatic large ore pass screen cleaning device and its usage method.

[0007] The technical solution of the present invention is: an automatic cleaning device for large pieces of sluice gate, comprising: a sluice gate; a gate hinge, the gate hinge being hinged between one side of the sluice gate and the sluice gate opening; a first position sensor, the first position sensor being installed on the ground directly opposite the lower surface of the other side of the sluice gate; a first weight sensor, the first weight sensor being installed on the ground directly opposite the lower surface of the other side of the sluice gate; a gate cylinder, the gate cylinder being installed below both ends of the sluice gate, the piston rod of the gate cylinder being hinged to the lower surfaces of both ends of the sluice gate; a front baffle, the front baffle being disposed near one end of the sluice gate; a second position sensor, the second position sensor being installed below the end of the front baffle near the sluice gate; a second weight sensor, the second weight sensor being installed below the end of the front baffle near the sluice gate; and a hydraulic station, the hydraulic station being signal-connected to the first position sensor, the first weight sensor, the second position sensor, and the second weight sensor.

[0008] An improvement to the above solution is that a grid limit switch connected to the grid cylinder signal is provided next to the grid hinge.

[0009] A further improvement to the above solution is that a front baffle cylinder is provided at the bottom of the front baffle, and the piston rod of the front baffle cylinder is hinged to the front baffle cylinder.

[0010] A further improvement to the above scheme is that the end of the front baffle away from the chute grid is hinged to the ground, and a front baffle limit switch connected to the front baffle cylinder signal is provided next to the front baffle hinge.

[0011] A further improvement to the above solution is that a large flip-in area is provided next to the grille hinge.

[0012] The method of using the automatic cleaning device for large blocks of ore pass grid includes the following steps: (1) Under normal conditions, the ore pass grid and the front baffle are in a horizontal state, the hydraulic station is in a standby state, and the first position sensor, the first weight sensor, the second position sensor, and the second weight sensor enter a continuous monitoring mode; (2) When the loader transports ore to the work area and the front wheel rolls over the front baffle, the second weight sensor is triggered by pressure and immediately cuts off the power supply to the hydraulic station, while simultaneously shutting down the first position sensor and the first weight sensor; (3) After the ore is discharged, the loader drives away from the front baffle, the second weight sensor returns to its initial state, and automatically connects the power supply to the hydraulic station and the first position sensor and the first weight sensor. The system switches to detection cycle mode; (4) If there are no large pieces of ore on the chute grid, the first weight sensor has no signal output, and the chute grid and the front baffle remain stationary, waiting for the next round of operation; (5) If there are large pieces of ore on the chute grid, the first weight sensor detects the weight and sends a signal, triggering the front baffle cylinder to lift the front baffle; the chute grid cylinder moves synchronously to lift the chute grid, and after the large pieces of ore are unloaded into the designated area, the grid cylinder moves in the opposite direction to retract the chute grid, the first position sensor detects the reset signal and stops, the front baffle cylinder moves in the opposite direction to retract the front baffle, the second position sensor detects the reset signal and stops, the system returns to the initial state, and waits for the next cycle.

[0013] The beneficial effects of this invention are: achieving fully automated operation cycles; through the linkage of weight sensors, position sensors, and hydraulic stations, the entire process of ore discharge, large-piece detection, unloading, and equipment reset can be completed without manual intervention, significantly reducing labor costs and human error; when the loader runs over the front baffle, the system automatically cuts off the power supply to the hydraulic station and the steel grating sensor signal to prevent equipment malfunction from causing damage to vehicles or personnel; the precise control of limit switches can prevent mechanical damage caused by excessive operation of components; under normal conditions, the sensors continuously monitor to ensure that the system responds to operational needs at any time; the automatic detection and unloading process of large ore pieces does not require manual intervention, reducing operation interruption time, making the overall transfer process smoother, and increasing the ore processing capacity per unit time. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the automatic cleaning device for large pieces of grating screen according to the present invention; Figure 2 yes Figure 1 Schematic diagram of the normal state of the grid in the middle chute; Figure 3 yes Figure 2 A diagram illustrating the flipped-up state; Figure 4 yes Figure 1 Schematic diagram of the front center baffle in normal condition; Figure 5 yes Figure 4A diagram illustrating the flipped-up state; In the diagram, 1. chute grating, 2. grating hinge, 3. first position sensor, 4. first weight sensor, 5. grating cylinder, 6. front baffle, 7. second position sensor, 8. second weight sensor, 9. hydraulic station, 10. grating limit switch, 11. front baffle cylinder, 12. front baffle limit switch, 13. large block flipping area, 14. front baffle hinge. Detailed Implementation

[0015] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments implemented by those skilled in the art without creative effort are within the protection scope of the present invention.

[0016] like Figure 1-5 As shown, the automatic cleaning device for large pieces of sluice gate includes: a sluice gate 1; a gate hinge 2, which is hinged between one side of the sluice gate and the sluice gate opening; a first position sensor 3, which is installed on the ground directly opposite the lower surface of the other side of the sluice gate; a first weight sensor 4, which is installed on the ground directly opposite the lower surface of the other side of the sluice gate; a gate cylinder 5, which is installed below both ends of the sluice gate, and the piston rod of the gate cylinder is hinged to the lower surfaces of both ends of the sluice gate; a front baffle 6, which is located near one end of the sluice gate; a second position sensor 7, which is installed below the end of the front baffle near the sluice gate; a second weight sensor 8, which is installed below the end of the front baffle near the sluice gate; and a hydraulic station 9, which is signal-connected to the first position sensor, the first weight sensor, the second position sensor, and the second weight sensor.

[0017] Specifically, two drive cylinders (grid cylinders) are symmetrically installed at both ends below the grating to form a stable lifting power source. A hinge is installed on one side of the grating, and a first position sensor and a first weight sensor are integrated at the bottom of the other side to monitor the grating's status in real time.

[0018] The front baffle is located in front of the steel grating, and a drive cylinder, namely the front baffle cylinder, is installed below it. A hinge is configured on one side, and a second position sensor and a second weight sensor are integrated on the other side to monitor the status of the front baffle in real time, forming a collaborative control unit that responds in conjunction with the chute grating system.

[0019] Under normal conditions, the ore pass and front baffle are placed horizontally, the hydraulic station is in standby mode, and all sensors are in continuous monitoring mode. When the loader transports ore to the work area and the front wheels run over the front baffle, the second weight sensor is triggered by pressure, immediately cutting off the power supply to the hydraulic station. At the same time, the first position sensor and the first weight sensor of the ore pass are shut down, ensuring that the loader releases ore into the ore pass without interference, avoiding equipment malfunctions that could cause safety hazards.

[0020] After the ore discharge is completed, the loader moves away from the front baffle, the second weight sensor returns to its initial state, automatically connects the power supply to the hydraulic station and the first position sensor and the first weight sensor, and the system switches to the detection cycle mode. Status 1: If there are no large pieces of ore on the chute screen, the first weight sensor will not output a signal, and both the chute screen and the front baffle will remain stationary, waiting for the next round of operation.

[0021] State 2: If there are large pieces of ore on the ore pass, the two hydraulic cylinders of the ore pass will move synchronously to lift the ore pass; when the ore pass reaches a certain position, the cylinders will stop. After the large pieces of ore are unloaded into the designated area, a 10-second delay will end (the delay can be set according to experience). The cylinders will then move in the opposite direction to retract the ore pass. The first position sensor will detect the reset signal and stop. The system will then return to its initial state and wait for the next cycle.

[0022] In a preferred embodiment of the present invention, a grid limit switch 10 connected to the grid cylinder is provided next to the grid hinge, and a front baffle cylinder 11 is provided at the bottom of the front baffle. The piston rod of the front baffle cylinder is hinged to the front baffle cylinder. A front baffle hinge 14 is hinged between the end of the front baffle away from the ore pass grid and the ground. A front baffle limit switch 12 connected to the front baffle cylinder is provided next to the front baffle hinge. Thus, in state 2: if there is a large piece of ore on the ore pass grid, the first weight sensor detects the weight and sends a signal, triggering the front baffle cylinder to move and lift the front baffle. When the front baffle rises to the limit position, the front baffle limit switch is activated, and the front baffle cylinder stops working. Subsequently, the two grid cylinders move synchronously to lift the grid. When the grid reaches the limit position, the grid limit switch is triggered, and the grid cylinder stops. After large pieces of ore are unloaded into the designated area, such as the large piece tipping area 13 located next to the grid hinge, the large pieces of ore fall into the large piece tipping area. After a 10-second delay (the delay can be set according to experience), the grid cylinder reverses its movement to retract the chute grid. The first position sensor detects the reset signal and then stops. Immediately afterwards, the front baffle cylinder reverses its movement to retract the front baffle. The second position sensor detects the reset signal and then stops. The system returns to its initial state and waits for the next cycle.

Claims

1. An automatic cleaning device for large pieces of grating screen, characterized in that it includes: Well grate (1); grate hinge (2), the grate hinge being hinged between one side of the well grate and the well opening; First position sensor (3), the first position sensor is installed on the ground directly opposite the lower surface of the chute grid on the other side; first weight sensor (4), the first weight sensor is installed on the ground directly opposite the lower surface of the chute grid on the other side; chute cylinder (5), the chute cylinder is installed below both ends of the chute grid, and the piston rod of the chute cylinder is hinged to the lower surfaces of both ends of the chute grid; front baffle (6), the front baffle is located near one end of the chute grid; second position sensor (7), the second position sensor is installed below one end of the front baffle near the chute grid; second weight sensor (8), the second weight sensor is installed below one end of the front baffle near the chute grid; hydraulic station (9), the hydraulic station is signal connected to the first position sensor, the first weight sensor, the second position sensor and the second weight sensor.

2. The automatic cleaning device for large pieces of grating as described in claim 1, characterized in that: A grid limit switch (10) connected to the grid cylinder signal is provided next to the grid hinge.

3. The automatic cleaning device for large pieces of grating as described in claim 2, characterized in that: The bottom of the front baffle is provided with a front baffle cylinder (11), and the piston rod of the front baffle cylinder is hinged to the front baffle cylinder.

4. The automatic cleaning device for large pieces of sluice screen as described in claim 3, characterized in that: The end of the front baffle away from the chute grid is hinged to the ground by a front baffle hinge (14), and a front baffle limit switch (12) connected to the front baffle cylinder signal is provided next to the front baffle hinge.

5. The automatic cleaning device for large pieces of grating as described in claim 1, characterized in that: A large flip-in area (13) is provided next to the grille hinge.

6. The method of using the automatic cleaning device for large pieces of chute grating as described in any one of claims 4 or 5, characterized in that: Includes the following steps: (1) Under normal conditions, the grating and the front baffle are in a horizontal state, the hydraulic station is in a standby state, and the first position sensor, the first weight sensor, the second position sensor and the second weight sensor enter the continuous monitoring mode; (2) When the loader transports ore to the work area and the front wheel rolls over the front baffle, the second weight sensor is triggered by pressure and immediately cuts off the power supply to the hydraulic station, and at the same time, the first position sensor and the first weight sensor are turned off; (3) After the ore is discharged, the loader drives away from the front baffle, the second weight sensor returns to its initial state, automatically connects the power supply to the hydraulic station and the first position sensor and the first weight sensor, and the system switches to the detection cycle mode; 4) If there are no large pieces of ore on the chute grid, the first weight sensor will not output a signal, and the chute grid and the front baffle will remain stationary, waiting for the next round of operation; (5) If there are large pieces of ore on the chute grid, the first weight sensor will detect the weight and send a signal, triggering the front baffle cylinder to lift the front baffle; the chute grid cylinder will move synchronously to lift the chute grid. After the large pieces of ore are unloaded into the designated area, the grid cylinder will move in the opposite direction to retract the chute grid. The first position sensor will stop after detecting the reset signal. The front baffle cylinder will move in the opposite direction to retract the front baffle. The second position sensor will stop after detecting the reset signal. The system will return to its initial state and wait for the next cycle.

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