Gangue pretreatment device with sliding crushing function for mine

Abstract

The utility model relates to the technical field of coal mining discloses a mine gangue pretreatment device with sliding crushing function, including support, set up on the multiaxis mobile structure of support and with the crushing head of multiaxis mobile structure connection, multiaxis mobile structure includes at least the telescopic oil cylinder of horizontal setting on the support, the utility model discloses through setting up the multiaxis mobile structure on the support to control the crushing head, has increased the crushing range, has solved the problem of poor passability of larger coal gangue, personnel waste.

Description

Technical Field

[0001] This utility model relates to the field of coal mining technology, specifically to a mine gangue pretreatment device with sliding crushing function. Background Technology

[0002] In coal mining, coal gangue is a major solid waste, and its crushing and processing is a crucial step in ensuring safe underground operations and improving transportation efficiency. Traditional crushing processes, for large pieces of coal gangue (generally exceeding 1.2m × 0.8m × 0.5m in size) generated from mining the blast furnace layer, typically employ intermittent operation with fixed crushers. However, limited by the feed inlet size and crushing chamber structure of existing hammer crushers, these extra-large gangue pieces require secondary crushing with manual pneumatic picks to reach a feedable size (usually ≤600mm). This results in frequent production line shutdowns awaiting pre-processing, leading to a production line idle rate of up to 35% (industry standard ≤15%). In addition, manual crushing requires operators to work close to unfixed gangue, which poses safety hazards such as gangue slippage and splashing. Industry statistics show that accidents caused by this type of operation account for 17.3% of non-mechanical injuries underground. The defects of existing technology are mainly manifested in the following aspects: 1) Crushing efficiency bottleneck: the pre-processing stage causes the production line to idle for ≥35%, and the power consumption per ton of gangue increases by 22%; 2) Prominent safety risks: high frequency of manual intervention (≥15 times per shift), and the risk level of falling rocks at the working face reaches Class II.

[0003] Commonly used hammer crushers for mining are fixed at the landing section of the transfer conveyor and mostly operate in a single direction. During coal transport on the transfer conveyor, the crushing shaft drives the crushing hammers to rotate at high speed, impacting and cutting large pieces of coal and gangue, crushing them into the desired size. This fixed-position crushing method makes it easy for large-volume coal and gangue to clog the scraper conveyor head and the discharge chute of the transfer conveyor, affecting transportation, requiring downtime for further crushing, and reducing work efficiency. Therefore, there is a need to develop a mining gangue pretreatment device with sliding crushing capabilities. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide a mining gangue pretreatment device with sliding crushing function. The crushing head is controlled by a multi-axis moving structure set on the support, which increases the crushing range and solves the problems of poor throughput of large coal gangue and waste of personnel.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a mining gangue pretreatment device with sliding crushing function, comprising a support, a multi-axis moving structure disposed on the support, and a crushing head connected to the multi-axis moving structure; the multi-axis moving structure includes at least a telescopic hydraulic cylinder horizontally disposed on the support.

[0006] Furthermore, the multi-axis moving structure also includes a lifting module connected to the movable end of the telescopic cylinder, and a depth adjustment mechanism connected to the top of the lifting module; the crushing head is connected to the end of the depth adjustment mechanism.

[0007] Furthermore, the support frame is horizontally equipped with a slide rail to ensure the stability of the horizontal movement of the lifting module.

[0008] Furthermore, the lifting module includes a base and a hydraulic cylinder fixed on the base; the depth adjustment mechanism is connected to the top of the movable end of the hydraulic cylinder.

[0009] Furthermore, a slider is provided inside the slide rail, which is slidably connected to it, and the slider is fixedly connected to the hydraulic cylinder.

[0010] Furthermore, the depth adjustment mechanism includes a telescopic module rotatably connected to the hydraulic cylinder, and a rotating module connected to the telescopic module that enables the crushing head to rotate in a vertical plane perpendicular to the plane formed by the hydraulic cylinder and the telescopic cylinder; the end of the rotating module is connected to the crushing head.

[0011] Furthermore, the support frame is equipped with an oil tank and a control module; the control module is communicatively connected to the lifting module, the telescopic cylinder, and the depth adjustment mechanism.

[0012] The beneficial effects of this utility model are as follows: This device is located close to the transfer machine; by setting a three-axis moving structure that can move in three directions to control the crushing head, the crushing range is increased, solving the problems of poor throughput of large coal gangue and wasted personnel; it improves crushing efficiency, prevents gangue blockage, and thus improves the mining efficiency and coal output of the coal mine; it eliminates the need for manual operation, ensures personnel safety, and reduces the accident rate; the lifting mechanism represents the Y-axis direction, the extension mechanism represents the X-axis direction, and the depth adjustment mechanism is the Z-axis, moving in a direction perpendicular to the plane containing the X and Y axes to crush the gangue. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure viewed from the front.

[0014] Figure 2 This is a schematic diagram of the side view structure.

[0015] In the diagram: 1. Crushing head; 2. Lifting module; 3. Control module; 4. Oil tank; 5. Telescopic cylinder; 6. Slide rail; 7. Depth adjustment mechanism. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings and specific embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0017] The directional terms mentioned in this utility model, such as "up", "down", "front", "back", "left", "right", "inner", "outer", "side", "top" and "bottom", are only for reference to the orientation of the accompanying drawings. The directional terms used are for the purpose of explaining and understanding this utility model, and are not intended to limit this utility model.

[0018] Example:

[0019] like Figures 1-2 As shown, a mining gangue pretreatment device with sliding crushing function is arranged parallel to the transfer machine, including a support, a multi-axis moving structure arranged on the support, and a crushing head 1 connected to the multi-axis moving structure; the multi-axis moving structure includes at least a telescopic cylinder 5 horizontally arranged on the support; the crushing head 1 can be driven by a variety of methods, such as hydraulics; the hammer surface of the crushing head 1 is made of WC-Co alloy.

[0020] The multi-axis moving structure also includes a lifting module 2 connected to the movable end of the telescopic cylinder 5, and a depth adjustment mechanism 7 connected to the top of the lifting module 2; the crushing head 1 is connected to the end of the depth adjustment mechanism 7.

[0021] The support frame is horizontally equipped with a slide rail 6 to ensure the stability of the horizontal movement of the lifting module 2. The slide rail 6 adopts a high-precision design and is surface hardened. The telescopic cylinder 5 represents the drive in the X-axis direction.

[0022] The lifting module 2 includes a base and a hydraulic cylinder fixed on the base and arranged vertically; the depth adjustment mechanism 7 is connected to the top of the movable end of the hydraulic cylinder.

[0023] The slide rail 6 is equipped with a slider that is slidably connected to it. The slider is confined within the slide rail 6 and can be slid horizontally. The slider is fixedly connected to the hydraulic cylinder.

[0024] The depth adjustment mechanism 7 includes a telescopic module rotatably connected to a hydraulic cylinder, and a rotating module connected to the telescopic module that enables the crushing head 1 to rotate in a vertical plane perpendicular to the plane formed by the hydraulic cylinder and the telescopic cylinder 5 (i.e., the plane formed by the X-axis and Y-axis). The end of the rotating module is connected to the crushing head 1. One specific configuration of the rotating module is as follows: the rotating module includes connecting seats respectively set on the telescopic module and the crushing head 1, and a connecting shaft connecting the two connecting seats. The telescopic module uses a hydraulic cylinder. The connecting seat on the hydraulic cylinder is connected to the connecting shaft through a second connecting shaft perpendicular to the connecting shaft and rotatably connected to the connecting seat. A servo motor is set on the outside of the connecting seat of the hydraulic cylinder, and the output end of the servo motor is connected to the second connecting shaft. A third connecting shaft is set on the connecting seat of the crushing head and fixedly connected to the connecting shaft. The third connecting shaft is fixedly connected to the connecting shaft and also fixedly connected to the second connecting shaft. The hydraulic cylinder and the telescopic module can also be rotatably connected by setting a rotating module.

[0025] The support frame is equipped with an oil tank 4 and a control module 3. The control module is communicatively connected to the lifting module 2, the telescopic cylinder 5, and the depth adjustment mechanism 7. The oil tank 4 has a temperature compensation function (existing technology) and supplies oil to the lifting module 2, the telescopic cylinder 5, and the depth adjustment mechanism 7. The starting end of the lifting module 2, the telescopic cylinder 5, and the depth adjustment mechanism 7 is equipped with a starting module, which is connected to the control module 3 via a wired or wireless communication module and is controlled by it. Both the starting module and the communication module are existing technologies. The movement in the three axes is started and stopped remotely, which reduces the workload and improves safety.

[0026] This device is positioned close to the transfer conveyor. It controls the crushing head using a three-axis moving structure that can move in three directions, increasing the crushing range and solving the problems of poor throughput of large coal gangue and wasted personnel. It improves crushing efficiency, prevents gangue blockage, and thus increases the mining efficiency and coal yield of the coal mine. No manual operation is required, ensuring personnel safety and reducing the accident rate. Lifting represents the Y-axis direction, extension represents the X-axis direction, and the depth adjustment mechanism is the Z-axis, moving in a direction perpendicular to the planes of the X and Y axes to crush the gangue. The X-axis dynamically tracks blockages along the transfer conveyor direction, the Y-axis lifting module 2 matches the gangue layering for pre-cracking, and the Z-axis depth adjustment mechanism 7 precisely controls the crushing depth. By modifying the unloading chute baffle and adding the gangue pretreatment device of this solution, large pieces of coal gangue are crushed in advance. The addition of a slide rail and slider allows the device to slide to the point where the crusher head meets the unloading chute of the transfer conveyor, extending the crushing distance.

[0027] Working process: Control module 3 controls the telescopic cylinder 5 to move horizontally left and right, while simultaneously controlling lifting module 2 and depth adjustment mechanism 7; lifting module 2 raises to above the size of the gangue, and depth adjustment mechanism 7 moves forward or backward according to the position of the gangue; two rotating modules control the specific positions of the telescopic module and the crushing head.

[0028] The above description is only used to illustrate the technical solution of this utility model and is not intended to limit it. Any other modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model, as long as they do not depart from the spirit and scope of the technical solution of this utility model, should be covered within the scope of the claims of this utility model.

Claims

1. A mine gangue pretreatment device with sliding crushing function, characterized in that: The device includes a support frame, a multi-axis moving structure mounted on the support frame, and a crushing head (1) connected to the multi-axis moving structure. The multi-axis moving structure includes at least a telescopic cylinder (5) horizontally mounted on the support frame. The multi-axis moving structure also includes a lifting module (2) connected to the movable end of the telescopic cylinder (5) and a depth adjustment mechanism (7) connected to the top of the lifting module (2). The crushing head (1) is connected to the end of the depth adjustment mechanism (7).

2. A mine gangue pretreatment device with sliding crushing function according to claim 1, characterized in that: The support is horizontally provided with a slide rail (6) to ensure the stability of the horizontal movement of the lifting module (2).

3. A mine gangue pretreatment device with sliding crushing function according to claim 2, characterized in that: The lifting module (2) includes a base and a hydraulic cylinder fixed on the base; the depth adjustment mechanism (7) is connected to the top of the movable end of the hydraulic cylinder.

4. A mine gangue pretreatment device with sliding crushing function according to claim 3, characterized in that: The slide (6) is provided with a slider that is slidably connected to it, and the slider is fixedly connected to the hydraulic cylinder.

5. A mine gangue pretreatment device with sliding crushing function according to claim 3, characterized in that: The depth adjustment mechanism (7) includes a telescopic module rotatably connected to the hydraulic cylinder, and a rotating module connected to the telescopic module and enabling the crushing head (1) to rotate in a vertical plane perpendicular to the plane formed by the hydraulic cylinder and the telescopic cylinder (5); the end of the rotating module is connected to the crushing head (1).

6. A mine gangue pretreatment device with sliding crushing function according to claim 3, characterized in that: The bracket is equipped with an oil tank (4) and a control module (3); the control module (3) is connected to the lifting module (2), the telescopic cylinder (5) and the depth adjustment mechanism (7) respectively.

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