Dredging device and dredging method for blockage of drop shaft under pit

Abstract

The device comprises an explosive bearing plate, a push-out assembly and a plurality of supporting rods, the multiple supporting rods are movably inserted into the explosive bearing plate in the circumferential direction, and the push-out assembly is used for synchronously moving the multiple supporting rods towards the exterior of the explosive bearing plate; breaking grooves are formed in the ends of the supporting rods, and a plurality of supporting strips are arranged between the breaking grooves. The explosive bearing plate is supported through the multiple supporting rods so that directional explosives can be placed at the blocking position of the draw shaft, evacuation of personnel and mechanical equipment is facilitated, the supporting strength of the supporting rods can be improved by breaking off connecting blocks of grooves of the supporting rods, and the situation that the supporting rods are damaged by gravity after the personnel and the mechanical equipment are evacuated is avoided; and the supporting rod can be broken at the breaking groove under the impact of the shock wave, so that the explosive bearing plate is conveniently separated and moves along with the shock wave, and the damage to the explosive bearing plate is reduced to facilitate repeated use.

Description

Technical Field

[0001] The invention belongs to the technical field of ore mining, and in particular relates to a device for dredging a blocked chute under a pit, and a method for dredging a blocked chute under a pit. Background Art

[0002] The chute is a system for transporting ore and waste rock in mining production. During the production process, due to the rough wall of the chute, mineral accumulation and the presence of large pieces of ore, the chute may become blocked, seriously affecting the normal production of the mine. Improper handling may also easily threaten the safety of operators.

[0003] In the prior art, a robot is usually used to enter the chute from the chute exit, and a bracket is used to place directional explosives at the bottom of the blockage. However, the falling rocks after the explosion will bury the robot, which is difficult to clean and can easily cause damage to the robot. Summary of the invention

[0004] The present invention aims at the problem that in the prior art, a bracket support method is used to place directional explosives at the bottom of the blockage, but the falling rocks after the explosion dredging will bury the robot, which is difficult to clean and easy to cause damage to the robot. The present invention proposes the following technical solution:

[0005] A device for clearing the blockage of a pit chute comprises: an explosive bearing plate, a push-out assembly and a plurality of support rods, wherein the plurality of support rods are circumferentially movably inserted inside the explosive bearing plate, the push-out assembly is used to synchronously move the plurality of support rods to the outside of the explosive bearing plate, the ends of the support rods are provided with breaking grooves, and a plurality of support bars are provided between the breaking grooves;

[0006] The explosive bearing plate is moved upward from the bottom of the chute so that the directional explosive is placed at the bottom of the blockage in the chute. The push-out assembly simultaneously moves multiple support rods toward the outside of the explosive bearing plate until the support rods contact the surface of the chute to frictionally fix the explosive bearing plate. The breaking grooves of the support rods move out of the explosive bearing plate as the support rods move outward. After the directional explosive is exploded under remote control, the support rods break at the breaking grooves to ensure that the explosive bearing plate flies out with the shock wave without being damaged.

[0007] As a preferred embodiment of the above technical solution, the pushing assembly includes a reciprocating pushing plate and multiple pushing members, both ends of which are respectively connected to the pushing plate and the corresponding support rods. The downward movement of the pushing plate provides a pushing force for the pushing member, which accelerates the pushing member to push the support rod out.

[0008] As a preferred embodiment of the above technical solution, the pushing member includes a telescopic frame and a translation block, the rotating shaft at one end of the telescopic frame is fixedly connected to the explosive carrying plate, the rotating shaft at the other end of the telescopic frame is provided with a pushing block connected to the support rod, and a connecting block is provided at one end of the translation block, the connecting block is fixedly connected to an end of a rotating shaft in the middle of the telescopic frame, and a return spring is provided between the connecting block and the explosive carrying plate.

[0009] As a preferred embodiment of the above technical solution, one end of the push plate is truncated cone-shaped, one end of the translation block is in contact with the end of the push plate, and the end surface of the translation block matches the truncated cone-shaped surface of the push plate.

[0010] As a preferred embodiment of the above technical solution, both the end of the support rod and the end of the push block are provided with magnetic blocks, and the adjacent surfaces of the two magnetic blocks have opposite magnetic properties.

[0011] As a preferred embodiment of the above technical solution, it also includes a mechanical arm, which is used to lift the explosive carrying plate. An electromagnet is provided at the lifting position of the mechanical arm, and the pushing plate is an iron-containing product.

[0012] As a preferred embodiment of the above technical solution, a ceramic explosion-proof layer is provided on the top and the bottom of the explosive bearing plate, and the material of the ceramic explosion-proof layer is silicon carbide.

[0013] The method for clearing the blockage of the pit chute by the clearing device comprises the following steps:

[0014] S1. Obtaining the blockage position information: using a robot with an explosive bearing plate to enter the well plug from the slope at the bottom of the chute, and observing the blockage position height through the image obtained by the camera;

[0015] S2. Delivering directional explosives: The robot uses a mechanical arm to lift the explosive bearing plate so that the directional explosives are placed at the bottom of the blocked part of the chute;

[0016] S3, fixing the directional explosive: using the push-out assembly to move the multiple support rods toward the outside of the explosive bearing plate until the support rods contact the surface of the chute to fix the explosive bearing plate by friction;

[0017] S4. Detonating the directional explosive: The robot exits the bottom of the chute and remotely controls the directional explosive to explode. The shock wave breaks the support rod through the breaking groove, and the explosive bearing plate is separated by the impact force of the shock wave.

[0018] S5. Recover the explosive carrier plate: After clearing the fallen blockage, use a robot to recover the explosive carrier plate and replace it with a new support rod for subsequent clearing.

[0019] The beneficial effects of the present invention are:

[0020] 1. Multiple support rods are used to support the explosive bearing plate so that the directional explosive is placed at the blocked part of the chute, which is convenient for the evacuation of personnel and mechanical equipment. The connecting block of the support rod breaking groove can increase the supporting strength of the support rod, so as to prevent the support rod from being damaged by gravity after the evacuation of personnel and mechanical equipment. Moreover, the support rod will break at the breaking groove under the impact of the shock wave, which is convenient for the explosive bearing plate to detach and move with the shock wave, thereby reducing the damage of the explosive bearing plate and facilitating reuse.

[0021] 2. When the device is installed into the chute, the push-out assembly can retract part of the support rod back into the explosive bearing plate, making it convenient to install the entire device and adjust it to a suitable installation position. The broken groove of the support rod is in the explosive bearing plate to prevent the support rod from colliding with the surface of the chute wall and being damaged during displacement. After the device is installed in the chute, the push-out assembly can push the support rod out at twice the speed to quickly fix the explosive bearing plate, facilitating the rapid installation of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 What is shown is a schematic diagram of the overall structure of the embodiment;

[0023] Figure 2 Shown is a diagram of the installation position of the support rod in the embodiment;

[0024] Figure 3 What is shown is a diagram of the contracted state of the push-out assembly in the embodiment;

[0025] Figure 4 In the embodiment shown Figure 3 Explosion diagram of

[0026] Figure 5 What is shown is the extended state diagram of the push-out assembly in the embodiment;

[0027] Figure 6 In the embodiment shown Figure 5 Explosion diagram.

[0028] In the figure: 10, explosive bearing plate; 11, ceramic explosion-proof layer; 20, support rod; 21, breaking groove; 22, support bar; 31, push plate; 321, telescopic frame; 322, translation block; 323, push block; 324, connecting block; 325, return spring; 326, magnetic block; 40, mechanical arm; 50, electromagnet. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments and the accompanying drawings of the specification.

[0030] Example

[0031] Figure 1-Figure 6 The device for clearing the blockage of a pit chute comprises: an explosive bearing plate 10, a push-out assembly and a plurality of support rods 20, wherein the plurality of support rods 20 are circumferentially movably inserted inside the explosive bearing plate 10, the push-out assembly is used to synchronously move the plurality of support rods 20 to the outside of the explosive bearing plate 10, the end of the support rod 20 is provided with a breaking groove 21, and a plurality of support bars 22 are provided between the breaking grooves 21;

[0032] The explosive carrier plate 10 is moved upward from the bottom of the chute so that the directional explosive is placed at the bottom of the blockage in the chute. The push-out assembly simultaneously moves multiple support rods 20 to the outside of the explosive carrier plate 10 until the support rods 20 contact the surface of the chute to frictionally fix the explosive carrier plate 10. The breaking grooves 21 of the support rods 20 move out of the explosive carrier plate 10 as the support rods 20 move outward. After the directional explosive is exploded under remote control, the support rods 20 break at the breaking grooves 21 to ensure that the explosive carrier plate 10 flies out with the shock wave without being damaged.

[0033] It also includes a mechanical arm 40, which is used to lift the explosive carrying plate 10. The lifting position of the mechanical arm 40 is provided with an electromagnet 50, and the pushing plate 31 is an iron-containing product.

[0034] A robot is used to carry the explosive carrier plate 10 into the well plug from the slope at the bottom of the chute. After observing the height of the blockage position through the image obtained by the camera, the mechanical arm 40 is used to lift the explosive carrier plate 10 to raise the directional explosive. After the directional explosive is placed at the bottom of the blockage in the chute, the electromagnet 50 is energized to adsorb the push plate 31 to move it downward to provide power for the ejection component. The ejection component then moves multiple support rods 20 to the outside of the explosive carrier plate 10 until the support rods 20 contact the surface of the chute to frictionally fix the explosive carrier plate 10. Then the robot exits the bottom of the chute and remotely controls the directional explosive to explode. The shock wave breaks the support rod 20 through the breaking groove 21, and the explosive carrier plate 10 is detached due to the impact force of the shock wave.

[0035] A plurality of support rods 20 are used to support the explosive carrier plate 10 so that the directional explosives can be placed at the blocked part of the chute, which is convenient for the evacuation of personnel and mechanical equipment. The support bar 22 of the broken groove 21 of the support rod 20 can increase the supporting strength of the support rod 20, thereby preventing the support rod 20 from being damaged by gravity after the evacuation of personnel and mechanical equipment. In addition, the support rod 20 will break at the broken groove 21 under the impact of the shock wave, which is convenient for the explosive carrier plate 10 to detach and move with the shock wave, thereby reducing the damage to the explosive carrier plate 10 and facilitating reuse.

[0036] The method for clearing the blockage of the pit chute by the clearing device comprises the following steps:

[0037] S1. Obtaining the blockage position information: using a robot carrying an explosive bearing plate 10 to enter the well plug from the slope at the bottom of the well, and observing the blockage position height through the image obtained by the camera;

[0038] S2. Delivering directional explosives: The robot uses the mechanical arm 40 to lift the explosive carrier plate 10 so that the directional explosives are placed at the bottom of the blocked part of the chute;

[0039] S3, fixing the directional explosive: using the push-out assembly to move the plurality of support rods 20 toward the outside of the explosive bearing plate 10 until the support rods 20 contact the surface of the chute to fix the explosive bearing plate 10 by friction;

[0040] S4, detonating the directional explosive: the robot exits the bottom of the chute and remotely controls the directional explosive to explode, the shock wave breaks the support rod 20 through the breaking groove 21, and the explosive bearing plate 10 is separated by the impact force of the shock wave;

[0041] S5, recovering the explosive bearing plate 10: after clearing the fallen blockage, use a robot to recover the explosive bearing plate 10, and replace it with a new support rod 20 for subsequent clearing.

[0042] Figure 3-Figure 6 In the figure, the pushing assembly includes a reciprocating pushing plate 31 and multiple pushing members, both ends of which are connected to the pushing plate 31 and the corresponding support rod 20 respectively. The downward movement of the pushing plate 31 provides a driving force for the pushing member, so that the pushing member accelerates and pushes the support rod 20 out.

[0043] The push-off member includes a telescopic frame 321 and a translation block 322. The rotation shaft at one end of the telescopic frame 321 is fixedly connected to the explosive carrying plate 10. The rotation shaft at the other end of the telescopic frame 321 is provided with a push block 323 connected to the support rod 20. One end of the translation block 322 is provided with a connecting block 324. The connecting block 324 is fixedly connected to an end of a rotation shaft in the middle of the telescopic frame 321. A return spring 325 is provided between the connecting block 324 and the explosive carrying plate 10.

[0044] One end of the push plate 31 is truncated cone-shaped, one end of the translation block 322 is in contact with the end of the push plate 31 , and the end surface of the translation block 322 matches the truncated cone-shaped surface of the push plate 31 .

[0045] When the support rod 20 needs to be pushed out, the pushing plate 31 is attracted by the magnetic force and moves downward. Since one end of the pushing plate 31 is truncated into a cone shape and the end surface of the translation block 322 matches the truncated cone surface of the pushing plate 31, multiple translation blocks 322 are synchronously moved toward the outside of the explosive carrier plate 10. Since the rotating shaft at one end of the telescopic frame 321 is fixedly connected to the explosive carrier plate 10, the translation block 322 pushes a rotating shaft in the middle of the telescopic frame 321 to move through the push block 323, and the return spring 325 is compressed and deformed accordingly. The rotating shaft at the other end of the telescopic frame 321 drives the connecting block 324 to move at a times speed to push the support rod 20 out. After the support rod 20 is pushed into place, the top surface of the pushing plate 31 is tightly fitted with the bottom surface of the translation block 322, so that the push-off member is in a stable state to ensure stable support for the explosive carrier plate 10.

[0046] When the device is loaded into the chute, the pushing assembly can partially retract the support rod 20 back into the explosive carrier plate 10, so that the entire device can be loaded and adjusted to a suitable installation position, and the broken groove 21 of the support rod 20 is located in the explosive carrier plate 10 to prevent the support rod 20 from colliding with the surface of the chute wall during displacement and being damaged. After the device is loaded into the chute, the pushing assembly can push the support rod 20 out at 0 times the speed to quickly fix the explosive carrier plate 10, so as to facilitate the rapid installation of the device.

[0047] Figure 3-Figure 6 In the figure, the end of the support rod 20 and the end of the push block 323 are both provided with a magnetic block 325 return spring; 326, the two magnetic blocks 325 return springs; the adjacent surfaces of 326 have opposite magnetic properties.

[0048] The support rod 20 and the push block 323 are fixed by the magnetic block 325 and the return spring 326, so that the damaged support rod 20 can be easily replaced without removing the explosive bearing plate 10, making the device more convenient to use.

[0049] Figure 1-Figure 6 In the embodiment, the top and bottom of the explosive bearing plate 10 are both provided with a ceramic explosion-proof layer 11, and the material of the ceramic explosion-proof layer 11 is silicon carbide material.

[0050] The ceramic explosion-proof layer 11 can increase the high temperature and severe impact of the explosive carrier plate 10 during explosion, greatly reduce the damage of the explosive carrier plate 10 , and thus extend the service life of the explosive carrier plate 10 .

[0051] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them.

Claims

1. A device for clearing the blockage of a pit chute, characterized in that: include: An explosive carrier plate (10), an ejection assembly and a plurality of support rods (20), wherein the plurality of support rods (20) are circumferentially movably inserted inside the explosive carrier plate (10), the ejection assembly is used to synchronously move the plurality of support rods (20) to the outside of the explosive carrier plate (10), the ends of the support rods (20) are provided with break grooves (21), and a plurality of support bars (22) are provided between the break grooves (21); The explosive carrier plate (10) is moved upward from the bottom of the chute so that the directional explosive is placed at the bottom of the chute where it is blocked. The push-out assembly simultaneously moves a plurality of support rods (20) toward the outside of the explosive carrier plate (10) until the support rods (20) contact the surface of the chute to fix the explosive carrier plate (10) by friction. The breaking grooves (21) of the support rods (20) move out of the explosive carrier plate (10) as the support rods (20) move outward. After the directional explosive is detonated under remote control, the support rods (20) break at the breaking grooves (21) to ensure that the explosive carrier plate (10) flies out with the shock wave without being damaged.

2. The device for clearing blockage in a pit chute according to claim 1, characterized in that: The ejection assembly comprises a reciprocating push plate (31) and a plurality of ejection members, wherein two ends of the ejection members are respectively connected to the push plate (31) and corresponding support rods (20), and the downward movement of the push plate (31) provides a driving force for the ejection members, so that the ejection members accelerate and eject the support rods (20).

3. The device for clearing blockage in a pit chute according to claim 2, characterized in that: The push-off member comprises a telescopic frame (321) and a translation block (322), wherein a rotation shaft at one end of the telescopic frame (321) is fixedly connected to the explosive bearing plate (10), and a push block (323) connected to the support rod (20) is arranged on the rotation shaft at the other end of the telescopic frame (321), and a connecting block (324) is arranged at one end of the translation block (322), and the connecting block (324) is fixedly connected to a rotation shaft end in the middle of the telescopic frame (321), and a return spring (325) is arranged between the connecting block (324) and the explosive bearing plate (10).

4. The device for clearing blockage in a pit chute according to claim 2, characterized in that: One end of the push plate (31) is truncated into a cone shape, one end of the translation block (322) is in contact with the end of the push plate (31), and the end surface of the translation block (322) matches the truncated cone-shaped surface of the push plate (31).

5. The device for clearing blockage in a pit chute according to claim 2, characterized in that: The end of the support rod (20) and the end of the push block (323) are both provided with a magnetic block (325 return spring; 326), and the adjacent surfaces of the two magnetic blocks (325 return spring; 326) have opposite magnetic properties.

6. The device for clearing blockage in a pit chute according to claim 2, characterized in that: It also includes a mechanical arm (40), the mechanical arm (40) is used to lift the explosive bearing plate (10), an electromagnet (50) is arranged at the lifting position of the mechanical arm (40), and the pushing plate (31) is an iron-containing product.

7. The device for clearing blockage in a pit chute according to claim 1, characterized in that: The top and bottom of the explosive bearing plate (10) are both provided with a ceramic explosion-proof layer (11), and the material of the ceramic explosion-proof layer (11) is silicon carbide.

8. The method for clearing a blocked pit chute according to any one of claims 1 to 7, characterized in that: The following steps are involved: S1. Obtaining the blockage position information: using a robot carrying an explosive carrier plate (10) to enter the well plug from the slope at the bottom of the well, and observing the blockage position height through the image obtained by the camera; S2. Delivering directional explosives: The robot uses a mechanical arm (40) to lift the explosive carrier plate (10) so that the directional explosives are placed at the bottom of the blocked part of the chute; S3, fixing the directional explosive: using a push-out assembly to move a plurality of support rods (20) toward the outside of the explosive carrier plate (10), until the support rods (20) contact the surface of the chute to fix the explosive carrier plate (10) by friction; S4, detonating the directional explosive: the robot exits the bottom of the chute and remotely controls the directional explosive to explode, the shock wave breaks the support rod (20) through the breaking groove (21), and the explosive bearing plate (10) is separated by the impact force of the shock wave; S5, recovering the explosive carrier plate (10): after clearing the fallen blockage, the explosive carrier plate (10) is recovered by a robot, and a new support rod (20) is replaced for subsequent clearing.

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