Movable waste rock blocking device for intelligent mining of coal-pillar-free self-formed roadway

Abstract

The utility model belongs to the technical field of coal mining equipment, and particularly relates to a movable waste rock blocking device for coal pillar-free self-roadway-forming intelligent mining, which comprises a movable bearing platform and a waste rock blocking support, a mounting station is arranged at the rear end of the movable bearing platform and used for mounting the waste rock blocking support, and the waste rock blocking support comprises a main rod and an auxiliary rod which are mutually hinged. The end, away from the main rod, of the auxiliary rod is connected with the movable bearing platform through a supporting rod, and the supporting rod stretches out and draws back along with unfolding or folding of the auxiliary rod and supports the front end of the waste rock blocking support after the auxiliary rod is unfolded. The movable bearing platform is provided with a driving module, autonomous movement of the device can be achieved, the position can be flexibly adjusted according to the actual situation of a roadway, and rapid in-place can be conducted according to the repair requirement; the gangue blocking support and the side gangue frame are arranged, so that gangue on the inner wall of the roadway can be blocked in all directions from multiple angles, the gangue is effectively prevented from rolling down, and the safety of coal mining is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of coal mining equipment, and in particular relates to a movable gangue retaining device used for intelligent mining of self-forming lanes without coal pillars. Background Art

[0002] The self-forming tunnel without coal pillars significantly reduces the problems caused by traditional coal pillar retention and improves the resource recovery rate by actively controlling the collapse of the roof and using the gangue in the goaf to form the tunnel wall. During the mining process, problems such as excessive hanging roof area, large and loose collapsed gangue blocks, or collapsed position close to the tunnel roof are prone to occur. At this time, it is necessary to reinforce the tunnel roof with anchor rods or anchor cables. In order to ensure that gangue will not roll down and injure workers during the reinforcement or repair process, it is necessary to use gangue retaining brackets to support the inner wall of the tunnel. Traditional gangue retaining devices are mostly fixed and cannot be quickly moved and supported according to the actual situation of the tunnel. It is difficult to meet the needs of rapid gangue retaining in the reinforcement or repair parts of the tunnel.

[0003] Therefore, it is necessary to provide an improved technical solution to the above-mentioned deficiencies in the prior art. Utility Model Content

[0004] The purpose of the utility model is to overcome the above-mentioned deficiencies in the prior art, and the utility model provides a movable gangue retaining device for intelligent mining of self-forming lanes without coal pillars.

[0005] In order to achieve the above purpose, the present invention provides the following technical solutions:

[0006] A movable rock retaining device for intelligent mining of coal pillar-free self-forming lanes comprises a movable bearing platform and a rock retaining bracket. The movable bearing platform has a driving module and a plurality of supporting legs are arranged around the movable bearing platform.

[0007] An installation station is provided at the rear end of the mobile carrying platform for installing the rock retaining bracket. The rock retaining bracket includes a main rod and a secondary rod hinged to each other. One end of the main rod is hinged to the installation station through two parallel first driving rods. A second driving rod is hinged between one end of the main rod and the secondary rod to drive the secondary rod to unfold or fold toward the front of the mobile carrying platform.

[0008] One end of the auxiliary rod away from the main rod is connected to the mobile bearing platform through a support rod. The support rod is extended and retracted as the auxiliary rod is unfolded or folded, and supports the front end of the rock retaining bracket after the auxiliary rod is unfolded.

[0009] Preferably, a laser ranging radar is provided above the mobile carrying platform to measure the shape and height of the inner wall of the tunnel.

[0010] Preferably, an angle sensor is provided between the main rod and the auxiliary rod, and between the main rod and the first driving rod;

[0011] The first driving rod, the second driving rod and the support rod are all provided with magnetostrictive displacement sensors;

[0012] The driving module, the angle sensor, the laser ranging radar, the magnetostrictive displacement sensor, the support leg, the first driving rod, the second driving rod and the support rod are correspondingly connected to the controller.

[0013] Preferably, the support leg, the first drive rod, the second drive rod and the support rod are all hydraulic cylinders, and a hydraulic station is provided on the mobile supporting platform. The hydraulic station controls the first drive rod, the second drive rod and the support rod respectively through solenoid valves, and the solenoid valves are correspondingly connected to the controller.

[0014] Preferably, the auxiliary rod is a channel steel, the opening width of the channel steel is greater than the width of the main rod, and first driving rods extending into the channel steel are respectively provided on both sides of the main rod.

[0015] Preferably, hinge plates extending along the length direction of the auxiliary rod are provided on both sides of the auxiliary rod, and the two hinge plates are hinged to the movable bearing platform through two support rods distributed in parallel.

[0016] Preferably, no less than two rock-blocking supports are provided on the same movable bearing platform.

[0017] Preferably, a side rock frame is provided on the movable bearing platform and is located on the side of the rock retaining bracket, one end of the side rock frame is hinged to the end of the movable bearing platform, and a third driving rod is provided between the middle of the side rock frame and the movable bearing platform.

[0018] Preferably, the lower surface of the support foot is provided with conical protrusions distributed in an array.

[0019] Beneficial effects: The mobile carrying platform has a driving module that can realize the autonomous movement of the device, can flexibly adjust its position according to the actual situation of the tunnel, and can be quickly put into place according to repair needs; the gangue blocking bracket and side gangue rack are set to block the gangue on the inner wall of the tunnel from multiple angles, effectively prevent the gangue from rolling down, and ensure the safety of coal mining. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings constituting part of this application are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an improper limitation of the present invention.

[0021] Figure 1This is a schematic diagram of the folded state of the slag retaining bracket in the specific embodiment provided by the utility model;

[0022] Figure 2 This is a schematic diagram of the expanded state of the slag retaining bracket in the specific embodiment provided by the utility model;

[0023] Figure 3 This is a schematic diagram of the slag retaining state of the slag retaining bracket in the specific embodiment provided by the utility model.

[0024] In the figure: 1. Mobile carrying platform; 2. Hydraulic station; 3. Drive module; 4. Support leg; 5. Main rod; 6. Auxiliary rod; 7. First drive rod; 8. Second drive rod; 9. Support rod; 10. Third drive rod; 11. Side gangue rack. DETAILED DESCRIPTION

[0025] The following is a clear and complete description of the technical solutions in the embodiments of the present invention. Obviously, the embodiments described 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 are within the scope of protection of the present invention.

[0026] In the description of the present invention, the terms "longitudinal", "transverse", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and do not require that the present invention must be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on the present invention. The terms "connected" and "connected" used in the present invention should be understood in a broad sense. For example, they can be fixed connections or detachable connections; they can be directly connected or indirectly connected through intermediate components. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0027] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments. It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present invention can be combined with each other.

[0028] A movable gangue retaining device for intelligent mining of self-forming lanes without coal pillars can flexibly move and adjust the position and angle of the gangue retaining support according to the actual situation of the lane, thereby effectively blocking the gangue. At the same time, it has an intelligent control function, which can monitor and automatically adjust the gangue retaining status in real time, improve the adaptability to the lane, and enhance the safety and efficiency of coal mining.

[0029] like Figure 1As shown, the rock retaining device includes a mobile carrying platform 1 and a rock retaining bracket. The mobile carrying platform 1 has a driving module 3. The driving module 3 can be a conventional commercially available small and medium-sized crawler-driven vehicle, which can be electrically driven or driven by an internal combustion engine. A plurality of support legs 4 are provided around the mobile carrying platform 1. The support legs 4 are supported on the tunnel ground and are used to support the mobile carrying platform 1, thereby transmitting the bearing force of the rock retaining bracket to the tunnel ground. The support legs 4 can be hydraulic cylinders, and an array of conical protrusions are provided on the lower surface of the support legs 4. The conical protrusions are used to increase the friction between the support legs 4 and the ground, thereby improving the stability of the device when parked.

[0030] An installation station is provided at the rear end of the mobile carrying platform 1 for installing a rock retaining bracket. The rock retaining bracket comprises a main rod 5 and a sub-rod 6 which are hinged to each other. The main rod 5 and the sub-rod 6 are both supported by channel steel. One end of the main rod 5 is hinged to the installation station through two parallel first driving rods 7. The spacing between the two first driving rods 7 is between one-third and one-quarter of the length of the main rod 5. Not only can they be lifted synchronously to adapt to tunnels of different heights, but further, the height difference between the two first driving rods 7 allows the main rod 5 to change its angle, thereby adapting to different tunnel top surface angles.

[0031] A second driving rod 8 is hinged between one end of the main rod 5 and the auxiliary rod 6 to drive the auxiliary rod 6 to expand or fold forward of the mobile carrying platform 1. The opening width of the channel steel corresponding to the auxiliary rod 6 is larger than that of the main rod 5, thereby forming an installation space corresponding to the first driving rod 7. In this way, the first driving rod 7 extending into the channel steel can be provided on both sides of the main rod 5. Furthermore, the slag retaining area is increased and the slag retaining effect is guaranteed.

[0032] The end of the auxiliary rod 6 away from the main rod 5 is connected to the mobile bearing platform 1 through the support rod 9. The support rod 9 is hydraulic steel. The support rod 9 swings as the auxiliary rod 6 is unfolded or folded, and retracts along the trajectory of the end of the auxiliary rod 6. Specifically, in the unfolded state, the first driving rod 7 is first extended into place, and then as the auxiliary rod 6 is unfolded, the support rod 9 first swings forward and retracts. Figure 2 As shown, after the auxiliary rod 6 and the support rod 9 are parallel, the support rod 9 is extended, and then after the auxiliary rod 6 is fully extended, the front end of the slag retaining bracket is supported to form a slag retaining state, see Figure 3 shown.

[0033] The support leg 4, the first drive rod 7, the second drive rod 8, the third drive rod 10, the telescopic oil cylinder and the support rod 9 are all hydraulic cylinders. In order to drive the hydraulic cylinder, a hydraulic station 2 is provided on the mobile bearing platform 1. The hydraulic station 2 includes a hydraulic pump, a hydraulic oil tank and a solenoid valve. The hydraulic pump controls the first drive rod 7, the second drive rod 8 and the support rod 9 respectively through the solenoid valve. The specific hydraulic station 2 and the solenoid valve can be arranged by technicians in this field according to conventional technical means. No excessive restrictions are imposed here. The solenoid valves corresponding to each hydraulic cylinder are connected to the controller, so that automatic control can be achieved.

[0034] In an optional embodiment, in order to improve the degree of intelligence, a laser ranging radar is provided above the mobile supporting platform 1 to measure the shape and height of the inner wall of the tunnel, and angle sensors are provided between the main rod 5 and the auxiliary rod 6, and between the main rod 5 and the first driving rod 7; magnetostrictive displacement sensors are provided on the first driving rod 7, the second driving rod 8 and the support rod 9; the driving module 3, the angle sensor, the laser ranging radar, the magnetostrictive displacement sensor, the support leg 4, the first driving rod 7, the second driving rod 8 and the support rod 9 are correspondingly connected to the controller.

[0035] During actual use, the mobile carrying platform 1 is moved to a preset position. A laser ranging radar is provided above the mobile carrying platform 1 to measure the shape and height of the inner wall of the tunnel, and provide data support for the movement of the device and the adjustment of the rock blocking bracket, so as to determine the elongation of each hydraulic cylinder to quickly block the rock. In this application, the controller is a crane computer or a computer host, and a related control program or software is set inside the controller. The control program does not fall within the scope of protection of this application. Those skilled in the art can use conventional technology to set it up according to actual work needs, and no excessive restrictions are imposed here.

[0036] In this application, the angle sensor is used to monitor the angle changes between the various components in real time. Magnetostrictive displacement sensors are provided on the first drive rod 7, the second drive rod 8 and the support rod 9 to monitor the telescopic displacement of each drive rod and the support rod 9 in real time. The controller intelligently controls each hydraulic cylinder based on the data collected by the sensor, thereby ensuring that the rock retaining support is supported according to the preset parameters, thereby realizing intelligent control of the device.

[0037] In an optional embodiment, hinge plates extending along the length direction of the auxiliary rod 6 are provided on both sides of the auxiliary rod 6. The setting of the hinge plates ensures that the auxiliary rod 6 and the support rod 9 can rotate in two directions without causing motion interference, thereby meeting the requirements of the auxiliary rod 6 in the unfolded and folded states. Furthermore, in order to ensure the bearing capacity, the present application sets two hinge plates to be hinged on the mobile supporting platform 1 through two parallel distributed support rods 9, and the mobile supporting platform 1 is provided with a corresponding hinge seat.

[0038] In order to meet the demand for rock blocking, no less than two rock blocking supports are provided on the same mobile carrying platform 1. According to the length of the tunnel repair position, multiple rock blocking devices can be set up to support the tunnel. Furthermore, two adjacent rock blocking devices are located on both sides of the tunnel, thereby meeting all-round support needs.

[0039] Furthermore, a side gangue frame 11 is provided on the mobile carrying platform 1 and is located on the side of the gangue retaining bracket. The side gangue frame 11 is used to support the side wall of the tunnel. One end of the side gangue frame 11 is hinged to the end of the mobile carrying platform 1. A third driving rod 10 is provided between the middle part of the side gangue frame 11 and the mobile carrying platform 1. The solenoid valve corresponding to the third driving rod 10 is also controlled by the control, and a magnetostrictive displacement sensor is correspondingly provided on the third driving rod 10.

[0040] The side gangue frame 11 is a channel steel, and a channel steel-shaped telescopic sleeve (not shown in the figure) that matches it is sleeved on the outside of the side gangue frame 11. The edge of the telescopic sleeve is bent toward the opening side of the side gangue frame 11 to form a sliding telescopic structure. A telescopic oil cylinder is provided on the inside of the side gangue frame 11, and a hinge seat extending toward the end of the side gangue frame 11 is provided at the upper end of the telescopic sleeve. One end of the telescopic oil cylinder is connected to the hinge seat and the other end is hinged inside the side gangue frame 11, so that the length of the side gangue frame 11 can be adjusted according to actual needs. Furthermore, the solenoid valve corresponding to the telescopic oil cylinder is also controlled by the control, and a magnetostrictive displacement sensor is correspondingly provided on the telescopic oil cylinder.

[0041] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention are within the scope of protection of the pending claims of the present invention.

Claims

1. A movable gangue retaining device for intelligent mining without coal pillars and self-forming lanes, characterized in that: It includes a mobile carrying platform and a rock retaining bracket, wherein the mobile carrying platform has a driving module and a plurality of supporting legs are arranged around the mobile carrying platform; An installation station is provided at the rear end of the mobile carrying platform for installing the rock retaining bracket. The rock retaining bracket includes a main rod and a secondary rod hinged to each other. One end of the main rod is hinged to the installation station through two parallel first driving rods. A second driving rod is hinged between one end of the main rod and the secondary rod to drive the secondary rod to unfold or fold toward the front of the mobile carrying platform. One end of the auxiliary rod away from the main rod is connected to the mobile bearing platform through a support rod. The support rod is extended and retracted as the auxiliary rod is unfolded or folded, and supports the front end of the rock retaining bracket after the auxiliary rod is unfolded.

2. The movable rock retaining device for pillar-free self-forming lane intelligent mining according to claim 1 is characterized in that: A laser ranging radar is provided above the mobile carrying platform to measure the shape and height of the inner wall of the tunnel.

3. The movable rock retaining device for pillar-free self-forming lane intelligent mining according to claim 2 is characterized in that: Angle sensors are provided between the main rod and the auxiliary rod, and between the main rod and the first driving rod; The first driving rod, the second driving rod and the support rod are all provided with magnetostrictive displacement sensors; The driving module, the angle sensor, the laser ranging radar, the magnetostrictive displacement sensor, the support leg, the first driving rod, the second driving rod and the support rod are correspondingly connected to the controller.

4. The movable rock retaining device for pillar-free self-forming lane intelligent mining according to claim 3 is characterized in that: The support leg, the first drive rod, the second drive rod and the support rod are all hydraulic cylinders. A hydraulic station is provided on the mobile supporting platform. The hydraulic station controls the first drive rod, the second drive rod and the support rod respectively through solenoid valves, and the solenoid valves are correspondingly connected to the controller.

5. The movable rock retaining device for pillar-free self-forming lane intelligent mining according to claim 1 is characterized in that: The auxiliary rod is a channel steel, the opening width of the channel steel is greater than the width of the main rod, and first driving rods extending into the channel steel are respectively provided on both sides of the main rod.

6. The movable rock-blocking device for pillar-free, self-forming lane intelligent mining according to claim 5 is characterized in that: Both sides of the auxiliary rod are provided with hinge plates extending along the length direction thereof, and the two hinge plates are hinged to the movable bearing platform through two supporting rods distributed in parallel.

7. The movable rock retaining device for pillar-free, self-forming lane intelligent mining according to claim 1 is characterized in that: No less than two rock-blocking supports are provided on the same movable bearing platform.

8. The movable rock retaining device for intelligent mining without coal pillars and self-forming lanes according to claim 1 is characterized in that: A side rock frame is provided on the movable bearing platform and is located on the side of the rock retaining bracket. One end of the side rock frame is hinged to the end of the movable bearing platform. A third driving rod is provided between the middle of the side rock frame and the movable bearing platform.

9. The movable rock retaining device for pillar-free, self-forming lane intelligent mining according to claim 1 is characterized in that: The lower surface of the support foot is provided with conical protrusions distributed in an array.

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