Surface fissure rapid filling grouting equipment for coal mine subsidence area

Abstract

The utility model discloses a kind of coal mine subsidence area surface fissure rapid filling grouting equipment, belong to coal mine geological technical field, including main body, conveying mechanism and reaming mechanism;Four groups of moving wheels are provided on the both sides of main body, driving device is provided in main body, for driving the whole equipment walking;Conveying mechanism is set on the top of main body, for conveying the mixing grouting material to reaming mechanism;Reaming mechanism is connected in the front end of main body by rotating base, driving motor is provided in main body, driving reaming mechanism rotates 180 along the front end of main body, and the fissure of the both sides of main body and front ground is filled.This utility model is simple in structure, does not need manual operation with vehicle, fills the vacancy on current automated surface fissure repair device, short operation time, can effectively ascertain and repair fissure, and can continuously carry out grouting operation, meet the requirement of safe and efficient production, with wide application prospect in coal seam subsidence area management aspect.

Description

Technical Field

[0001] This utility model belongs to the field of coal mine geological technology, and more specifically relates to a rapid filling and grouting device for surface cracks in coal mine subsidence areas. Background Technology

[0002] After coal seam mining, the overlying strata will fracture and subside under gravity. Under high-intensity mining, the subsidence space of the overlying strata is large and the speed is fast, leading to severe damage and significant subsidence, resulting in large-scale collapse areas and turning mines into sites of debris flows, landslides, and flash floods. Existing methods for treating surface cracks in coal mining areas often involve backfilling or grouting. When using grouting, the crack is typically roughened by enlarging the borehole, then a binder grout is prepared using a machine, and finally, grout is injected into the crack through a fixed guide pipe. However, during construction, workers usually operate the borehole enlarging machine and the grouting machine separately to fill and grout the surface cracks, which is extremely inefficient. Furthermore, the soft soil and poor road conditions in the collapse area make it difficult for workers to carry heavy equipment. Therefore, providing a rapid grouting device for filling surface cracks in coal mine collapse areas is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0003] In view of this, the present invention provides a rapid filling and grouting device for surface cracks in coal mine subsidence areas, adopting the following technical solution:

[0004] A rapid grouting device for filling surface fissures in coal mine subsidence areas includes a main body, a conveying mechanism, and a hole-expanding mechanism. Four sets of moving wheels are installed on both sides of the main body, and a drive device is installed inside the main body to drive the entire device. The conveying mechanism is located above the main body and is used to transport the mixed grout to the hole-expanding mechanism. The hole-expanding mechanism is connected to the front end of the main body via a rotating base, and a drive motor is installed inside the main body to drive the hole-expanding mechanism to rotate 180° along the front end of the main body.

[0005] Furthermore, the main body extends outwards from the inside to both sides to provide a support structure; the support structure includes two sets of support legs on the left and right sides and a first electric telescopic rod for raising and lowering the support legs.

[0006] Furthermore, the conveying mechanism includes a stirring drum and a conveying pipe. A first motor is provided at the top of the stirring drum, and the driving end of the first motor is connected to the inner cylinder that is rotated inside the stirring drum. One end of the conveying pipe is connected to the bottom of the stirring drum, and the other end is connected to the hole-expanding mechanism.

[0007] Furthermore, the inner cylinder is equipped with spiral stirring blades for stirring the grout.

[0008] Furthermore, the hole-reaming mechanism includes a support base plate, a grouting cover plate, and a hole-reaming drill; one end of the support base plate is connected to the drive motor via a rotating shaft passing through the rotating base; the other end of the support base plate is connected to the grouting cover plate via two sets of symmetrically arranged second electric telescopic rods for driving the grouting cover plate to rise and fall; the other end of the support base plate is also connected to the hole-reaming drill via a drive mechanism; the drive mechanism is used to drive the hole-reaming drill to rise and fall.

[0009] Furthermore, the driving mechanism includes a connecting plate, a threaded rod, a guide rod, and a second motor; the lower end of the connecting plate is rotatably connected to the reamer, and both ends are respectively provided with a guide hole and a threaded hole, which are respectively connected to the guide rod and the threaded rod; the upper end of the guide rod is fixedly connected to the lower end of the support substrate; the upper end of the threaded rod passes through the support substrate and is connected to the second motor located on the support substrate.

[0010] Furthermore, the connecting plate is equipped with a third motor for driving the reamer to rotate; the upper end of the reamer is rotatably connected to the connecting plate via a base, and the bottom is equipped with a spiral drill bit.

[0011] Furthermore, the top of the supporting base plate is provided with a groove for setting the conveying pipe of the conveying mechanism; the conveying pipe is connected to the conveying channel inside the reamer through the base; the conveying channel is connected to the grouting hole on the auger drill bit.

[0012] The beneficial effects of this utility model are as follows:

[0013] This utility model provides a rapid filling and grouting device for surface cracks in coal mine subsidence areas. The device is highly automated, simple in structure, and does not require manual operation. It fills the gap in the current automated surface crack repair device, has a short operation time, can effectively identify and repair cracks, and can continuously perform grouting operations, meeting the requirements of safe and efficient production. It has broad application prospects in the treatment of coal seam subsidence areas. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0016] Figure 2 This is a schematic diagram of the internal structure of this utility model.

[0017] Figure 3 This is a schematic diagram of the grouting cover plate and the reaming drill of this utility model.

[0018] In the figure:

[0019] 1-Main body; 2-Support leg; 3-Limiting plate; 4-First electric telescopic rod; 5-Mixing drum; 6-Conveying pipe; 7-First motor; 8-Rotating base; 9-Bearing base plate; 10-Grouting cover plate; 11-Reamer; 12-Second electric telescopic rod; 13-Connecting plate; 14-Threaded rod; 15-Smooth rod; 16-Second motor; 17-Third motor; 18-Drive motor. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see the appendix Figure 1-3 This utility model provides a rapid filling grouting device for surface cracks in coal mine subsidence areas, including a main body 1, a conveying mechanism, and a hole-expanding mechanism. Four sets of moving wheels are arranged on both sides of the main body 1, and a driving device is installed inside the main body 1 to drive the entire device. The conveying mechanism is located above the main body 1 and is used to convey the mixed grout to the hole-expanding mechanism. One end of the hole-expanding mechanism is rotatably connected to the front end of the main body 1, and a drive motor 18 is installed inside the main body 1 to drive the hole-expanding mechanism to rotate 180° along the front end of the main body 1, enabling the filling of cracks on both sides and in front of the main body.

[0022] The main body 1 extends from the inside to both sides to provide support structures for stabilizing the equipment body during operation. The support structures include two sets of support legs 2 on the left and right sides, and a first electric telescopic rod 4 for raising and lowering the support legs 2. A limiting plate 3 is fixedly installed on each side of the main body 1, and the limiting plate 3 has a sliding groove. The two sets of support legs 2 are fixedly connected by a connecting rod, with both ends of the connecting rod passing through the sliding groove of the limiting plate 3. The middle of the connecting rod is fixedly connected to the output end of the first electric telescopic rod 4. The first electric telescopic rod 4 drives the connecting rod to move along the sliding groove, thereby raising and lowering the two sets of support legs 2.

[0023] The conveying mechanism includes a mixing drum 5 and a conveying pipe 6. The mixing drum 5 is inclined at 45° on the main body 1. A first motor 7 is installed at the top of the mixing drum 5. The drive end of the first motor 7 is connected to an inner cylinder that rotates inside the mixing drum 5, for driving the inner cylinder to rotate. Spiral stirring blades are installed inside the inner cylinder for stirring the grout and preventing stratification. One end of the conveying pipe 6 is connected to the bottom of the mixing drum 5, and the other end is connected to the reaming mechanism, for conveying the grout to the reaming mechanism. A valve is installed at the connection between the bottom of the mixing drum 5 and the conveying pipe 6 for controlling the output of the grout.

[0024] The mixing drum 5 is provided with a feeding port on one side, which can be used to directly feed materials into the mixing drum 5 before operation, or it can be connected to the filling and grouting station located at the edge of the collapse area through a pipeline to transport the grouting material into the mixing drum 5.

[0025] The reaming mechanism is connected to the main body 1 via a rotating base 8. The reaming mechanism includes a supporting base plate 9, a grouting cover plate 10, and a reaming drill 11. One end of the supporting base plate 9 is connected to the drive motor 18 via a rotating shaft passing through the rotating base 8. The other end of the supporting base plate 9 is connected to the grouting cover plate 10 via two symmetrically arranged second electric telescopic rods 12, used to drive the grouting cover plate 10 to rise and fall. The other end of the supporting base plate 9 is also connected to the reaming drill 11 via a drive mechanism, used to drive the reaming drill 11 to rise and fall. The grouting cover plate 10 can smooth the surface cracks after grouting and can also play a role in guiding and pressurizing the flow.

[0026] The reaming drill 11 is positioned between two sets of second electric telescopic rods 12, with its lower end penetrating the grouting cover plate 10. The driving mechanism includes a connecting plate 13, a threaded rod 14, a smooth rod 15, and a second motor 16. The lower end of the connecting plate 13 is rotatably connected to the reaming drill 11, and both ends are respectively provided with a smooth hole and a threaded hole, connecting the smooth rod 15 and the threaded rod 14. The upper end of the smooth rod 15 is fixedly connected to the lower end of the supporting base plate 9. The upper end of the threaded rod 14 penetrates the supporting base plate 9 and is connected to the second motor 16 located on the supporting base plate 9. The second motor 16 drives the threaded rod 14 to rotate, thereby causing the connecting plate 13 to move along the smooth rod 15, and thus driving the reaming drill 11 to rise and fall.

[0027] The connecting plate 13 is equipped with a third motor 17 for driving the reamer 11 to rotate; the upper end of the reamer 11 is rotatably connected to the connecting plate 13 through a base, and a spiral drill bit is provided at the bottom; the output end of the third motor 17 is connected to the upper end of the reamer 11, driving the reamer 11 to rotate and drill into the ground crack.

[0028] The reamer 11 has a conveying channel inside, which connects to the grouting hole on the bottom auger bit; the top of the bearing base plate 9 has a groove for setting the conveying pipe 6; the conveying pipe 6 connects to the conveying channel inside the reamer 11 through the base, and conveys the grout to the inside of the reamer 11, and injects it into the surface cracks through the grouting hole.

[0029] The main body 1 also houses a battery pack for driving the entire device and a controller for controlling various electrical components. The controller is remotely connected to a computer, allowing staff to remotely operate the device.

[0030] In use, this invention allows operators to remotely control the equipment to operate on cracked surfaces, with the mixing drum 5 constantly rotating during operation. After moving to the predetermined position, the first electric telescopic rod is activated to lower the support leg 2 to secure the machine body; the second electric telescopic rod 12 is activated to lower the grouting cover plate 10; the second motor 16 is activated to move the reamer 11 downwards, while simultaneously the third motor 17 is activated to screw the reamer 11 into the crack. After reaming the crack, the valve at the bottom of the mixing drum 5 can be opened to inject grout into the crack. The drive motor 18 can also drive the reaming mechanism to rotate 180° along the front end of the main body 1, filling cracks on both sides and in front of the main body 1.

[0031] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0032] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A rapid grouting device for filling surface fissures in coal mine subsidence areas, characterized in that, It includes a main body (1), a conveying mechanism, and a hole-expanding mechanism; four sets of moving wheels are provided on both sides of the main body (1), and a driving device is provided inside the main body (1) to drive the entire device to move; the conveying mechanism is located above the main body (1) and is used to convey the mixed grout to the hole-expanding mechanism; the hole-expanding mechanism is connected to the front end of the main body (1) through a rotating base (8), and a drive motor (18) is provided inside the main body (1) to drive the hole-expanding mechanism to rotate 180° along the front end of the main body (1).

2. The rapid filling and grouting equipment for surface fissures in coal mine subsidence areas according to claim 1, characterized in that, The main body (1) extends from the inside to both sides to provide a support structure; the support structure includes two sets of support legs (2) on the left and right sides and a first electric telescopic rod (4) for raising and lowering the support legs (2).

3. The rapid filling and grouting equipment for surface fissures in coal mine subsidence areas according to claim 1, characterized in that, The conveying mechanism includes a stirring drum (5) and a conveying pipe (6). A first motor (7) is provided on the top of the stirring drum (5). The driving end of the first motor (7) is connected to the inner cylinder that is rotated inside the stirring drum (5). One end of the conveying pipe (6) is connected to the bottom of the stirring drum (5), and the other end is connected to the hole expansion mechanism.

4. The rapid filling and grouting equipment for surface fissures in coal mine subsidence areas according to claim 3, characterized in that, The inner cylinder is equipped with spiral stirring blades for stirring the grout.

5. The rapid filling and grouting equipment for surface fissures in coal mine subsidence areas according to claim 1, characterized in that, The hole-reaming mechanism includes a support base plate (9), a grouting cover plate (10), and a hole-reaming drill (11); one end of the support base plate (9) is connected to the drive motor (18) through a rotating shaft passing through the rotating base (8); the other end of the support base plate (9) is connected to the grouting cover plate (10) through two sets of symmetrically arranged second electric telescopic rods (12), which are used to drive the grouting cover plate (10) to rise and fall; the other end of the support base plate (9) is also connected to the hole-reaming drill (11) through a drive mechanism; the drive mechanism is used to drive the hole-reaming drill (11) to rise and fall.

6. The rapid filling and grouting equipment for surface fissures in coal mine subsidence areas according to claim 5, characterized in that, The driving mechanism includes a connecting plate (13), a threaded rod (14), a smooth rod (15), and a second motor (16); the lower end of the connecting plate (13) is rotatably connected to the reamer (11), and both ends are provided with a smooth hole and a threaded hole, which are respectively connected to the smooth rod (15) and the threaded rod (14); the upper end of the smooth rod (15) is fixedly connected to the lower end of the support substrate (9); the upper end of the threaded rod (14) passes through the support substrate (9) and is connected to the second motor (16) located on the support substrate (9).

7. The rapid filling and grouting equipment for surface fissures in coal mine subsidence areas according to claim 6, characterized in that, The connecting plate (13) is provided with a third motor (17) for driving the reamer (11) to rotate; the upper end of the reamer (11) is rotatably connected to the connecting plate (13) through a base, and the bottom is provided with a spiral drill bit.

8. The rapid filling and grouting equipment for surface fissures in coal mine subsidence areas according to claim 7, characterized in that, The top of the support base plate (9) is provided with a groove for setting the conveying pipe (6) of the conveying mechanism; the conveying pipe (6) is connected to the conveying channel inside the reamer (11) through the base; the conveying channel is connected to the grouting hole on the spiral drill bit.

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