Ground drilling equipment for grouting and filling area of coal mine

Abstract

The invention discloses ground drilling equipment for a coal mine grouting filling area, and relates to the technical field of coal mine drilling. The support is arranged on the movable base, and a first driving part is arranged at the top of the support; the threaded rods are arranged on the top of the movable base, and the first driving part can drive the threaded rods to rotate synchronously; the lifting plate is in threaded connection between the threaded rods; and the drilling and grouting mechanism is arranged on the lifting plate, so that synchronous grouting and synchronous gas discharging are achieved in the drilling process, the situation that gas is accumulated in a grouting material to form bubbles, and consequently the compactness and strength of the grouting material are affected can be prevented, it is further guaranteed that the grouting material evenly and tightly fills a drilled hole, and the filling quality is improved.

Description

Technical Field

[0001] The invention relates to the technical field of coal mine drilling, and more specifically to a ground drilling device for a coal mine grouting filling area. Background Art

[0002] In the process of coal mining, grouting filling of goaf is a crucial engineering measure to ensure the safety and stability of the mine and the effective use of resources. Grouting filling can not only effectively control the subsidence of the strata and prevent surface collapse, but also reduce the risk of mine fires and improve the mine working environment. However, traditional coal mine grouting filling operations face a series of technical challenges during implementation, especially in the drilling and grouting links.

[0003] Traditional ground drilling equipment often uses the method of drilling first and then grouting when performing grouting filling in coal mines. This process easily leads to the inability to effectively discharge gas during the grouting process, which accumulates inside the grouting material to form bubbles. The presence of bubbles will seriously affect the density of the grouting material and the strength after the final solidification, reducing the overall stability and bearing capacity of the filling body. In addition, bubbles may also become a weak link in the grouting material, increase the risk of future stratum deformation, and affect the overall effect of grouting filling.

[0004] Based on this, we provide a ground drilling equipment for coal mine grouting filling area. Summary of the invention

[0005] In order to solve the technical problem of drilling first and then grouting proposed in the above background technology, this process easily leads to the inability to effectively discharge gas during the grouting process, thereby accumulating inside the grouting material to form bubbles. The presence of bubbles will seriously affect the density of the grouting material and the strength after final solidification, reducing the overall stability and bearing capacity of the filling body. In addition, bubbles may also become a weak link in the grouting material, increase the risk of future stratum deformation, and affect the overall effect of grouting filling. The present invention provides a ground drilling device for the grouting filling area of ​​a coal mine.

[0006] The present invention provides a ground drilling device for a coal mine grouting filling area, which adopts the following technical solution:

[0007] A ground drilling device for a coal mine grouting filling area comprises a mobile base; a bracket, which is arranged on the mobile base, and a driving member 1 is arranged on the top of the bracket; a plurality of threaded rods, which are all arranged on the top of the mobile base, and the driving member 1 can drive each of the threaded rods to rotate synchronously; a lifting plate, which is threadedly connected between each of the threaded rods; a drilling grouting mechanism, which is arranged on the lifting plate; the drilling grouting mechanism comprises a drill rod rotatably connected to the lifting plate, and a driving member 2 for driving the drill rod to rotate is arranged on the top of the lifting plate; a grouting chamber is opened inside the drill rod, and the bottom of the drill rod is connected to a hose for connecting to an external grouting device; a partition is fixedly arranged in the grouting chamber and separates the grouting chamber into two cavities; an exhaust pipe is connected to the top of the drill rod and is used to discharge the gas in the grouting chamber.

[0008] Preferably, a solenoid valve is provided between the hose and the grouting chamber for controlling the discharge of grouting, a sensor is provided inside the exhaust pipe for detecting gas discharge, and a controller is provided on the drill rod for receiving the electrical signal of the sensor and controlling the start and stop of the solenoid valve.

[0009] Preferably, the grouting cavity is L-shaped, and the partition is fully adapted to the grouting cavity.

[0010] Preferably, a plurality of through holes are equidistantly formed on the side surface of the partition.

[0011] Preferably, a slide groove is provided inside the partition relative to the position of the through hole, a shielding plate is slidably connected to the slide groove through a spring, a push plate is provided on the side of the shielding plate, and the push plate is arranged on the side of the partition, and a limiting groove is provided on the side of the partition relative to the position of the push plate for the up and down movement of the push plate.

[0012] Preferably, the driving member 1 includes a frame fixedly mounted on a bracket, the top of each of the threaded rods is arranged in the frame, the top of each of the threaded rods is transmission-connected with a toothed belt, and a motor 1 is mounted on the top of the frame for driving each of the threaded rods to rotate synchronously.

[0013] Preferably, the second driving member comprises a second motor installed in the lifting plate, the output end of the second motor is equipped with a driving gear, the top of the drill rod is equipped with a driven gear, and the driving gear is meshingly connected with the driven gear.

[0014] In summary, the present invention includes the following beneficial technical effects:

[0015] 1. The threaded rods are driven to rotate synchronously by the driving member 1, so that the lifting plate can move on the threaded rods, and the drill rod is driven to rotate by the driving member 2, so that the drill rod can drill holes on the ground. When the drill rod penetrates the filling area, the gas in the filling area can enter the exhaust pipe through the grouting cavity and be discharged to the outside. At this time, the slurry can be injected into the hose through the external grouting equipment, and discharged to the filling area through another cavity in the grouting cavity. Through this structural design, the grouting and gas are synchronously discharged during the drilling process, which can prevent the gas from accumulating in the grouting material to form bubbles, thereby affecting the density and strength of the grouting material, and further help to ensure that the grouting material fills the borehole evenly and tightly, thereby improving the filling quality;

[0016] 2. It can also accelerate the penetration and diffusion of grouting materials, reduce the resistance during the grouting process, and avoid gas accumulation that may cause the internal pressure of the equipment to increase and cause damage to the equipment;

[0017] 3. Under complex geological conditions, such as unstable formations and rich aquifers, synchronous grouting can quickly stabilize the hole wall, prevent collapse and leakage during the drilling process, and ensure the smooth progress of the drilling operation;

[0018] 4. By setting the through hole, when discharging the gas, the grouting cavity in the grouting chamber can be used to release the gas in the filling area faster. When the grouting material enters the grouting cavity, the pressure of the grouting material can push the push plate down one by one to close the through hole. At the same time, the gas in the grouting cavity in the grouting cavity can gradually enter the exhaust cavity through the through hole for discharge. When the push plate moves down, the spring can be stretched. After the grouting is completed, the spring can rebound to open the through hole. Through this structural design, the gas can be reduced from returning to the filling area.

[0019] The above summary is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the present invention will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of a ground drilling device for a coal mine grouting filling area according to an embodiment of the present invention;

[0021] Figure 2 It is a structural schematic diagram of the other side of a ground drilling device for a coal mine grouting filling area according to an embodiment of the present invention;

[0022] Figure 3 is a schematic diagram of the structure inside the frame in an embodiment of the present invention;

[0023] Figure 4 is a schematic diagram of the structure inside the drill rod in an embodiment of the present invention;

[0024] Figure 5 yes Figure 4 The enlarged structural diagram at A in the middle;

[0025] Figure 6 Schematic diagram of the structure inside the partition in an embodiment of the present invention.

[0026] Explanation of the accompanying drawings: 1. Mobile base; 2. Bracket; 3. Driving member 1; 300. Frame; 301. Toothed belt; 4. Threaded rod; 5. Lifting plate; 6. Drilling and grouting mechanism; 600. Drill rod; 601. Grouting chamber; 602. Hose; 603. Partition; 604. Exhaust pipe; 605. Through hole; 606. Slide groove; 607. Spring; 608. Shielding plate; 609. Push plate; 7. Driving member 2; 700. Driving gear; 701. Driven gear. DETAILED DESCRIPTION

[0027] The following is combined with Figures 1 to 6 The present invention is described in further detail.

[0028] It should be noted that the drawings are schematic and not to scale. For the sake of clarity and convenience, the relative sizes and proportions of the parts shown in the drawings are exaggerated or reduced in size, and any size is only illustrative and not restrictive. In addition, the same reference symbol is used for the same structure, element or accessory appearing in more than two figures to reflect similar features.

[0029] Embodiment 1

[0030] The embodiment of the present invention discloses a ground drilling device for a coal mine grouting filling area. Figures 1 to 6 A ground drilling device for a coal mine grouting filling area includes a mobile base 1, a bracket 2, a plurality of threaded rods 4, a lifting plate 5, and a drilling grouting mechanism 6. The bracket 2 is arranged on the mobile base 1, and a driving member 3 is arranged on the top of the bracket 2; the plurality of threaded rods 4 are arranged on the top of the mobile base 1, and the driving member 3 can drive each threaded rod 4 to rotate synchronously; the lifting plate 5 is threadedly connected between each threaded rod 4; and the drilling grouting mechanism 6 is arranged on the lifting plate 5.

[0031] like Figure 4As shown, the drilling grouting mechanism 6 includes a drill rod 600 rotatably connected to the lifting plate 5, and a driving member 7 for driving the drill rod 600 to rotate is arranged on the top of the lifting plate 5; a grouting chamber 601 is opened inside the drill rod 600, and the bottom of the drill rod 600 is connected to a hose 602 for connecting to an external grouting device; a partition plate 603 is fixedly arranged in the grouting chamber 601 and separates the grouting chamber 601 into two cavities; an exhaust pipe 604 is connected to the top of the drill rod 600 and is used to discharge the gas in the grouting chamber 601.

[0032] Specifically, the threaded rods 4 are driven to rotate synchronously by the driving member 1 3, so that the lifting plate 5 can move on the threaded rod 4, and the drill rod 600 is driven to rotate by the driving member 2 7, so that the drill rod 600 can drill a hole in the ground. When the drill rod 600 penetrates the filling area, the gas in the filling area can enter the exhaust pipe 604 through the grouting chamber 601 and be discharged to the outside. At this time, the slurry can be injected into the hose 602 through the external grouting equipment, and discharged to the filling area through another cavity in the grouting chamber 601. Through this structural design, synchronous grouting can be performed during the drilling process, which can ensure that the grouting material is filled in time before the hole wall collapses, reduce the possibility of hole wall shedding and unreal grouting (timely filling of cavities or cracks that may be formed during the drilling process), improve the density and uniformity of filling, and synchronous exhaust of gas can prevent gas from accumulating in the grouting material to form bubbles, thereby affecting the density and strength of the grouting material, further helping to ensure that the grouting material fills the borehole evenly and tightly, and improves the filling quality;

[0033] It can also accelerate the penetration and diffusion of grouting materials, reduce resistance during the grouting process, and avoid gas accumulation that may cause increased internal pressure of the equipment and damage the equipment.

[0034] Under complex geological conditions, such as unstable strata and rich aquifers, synchronous grouting can quickly stabilize the hole wall, prevent collapse and leakage during the drilling process, and ensure the smooth progress of the drilling operation.

[0035] like Figure 4 As shown, a solenoid valve is provided between the hose 602 and the grouting chamber 601 for controlling the discharge of the grouting, a sensor is provided inside the exhaust pipe 604 for detecting gas discharge, and a controller is provided on the drill rod 600 for receiving the electrical signal of the sensor and controlling the start and stop of the solenoid valve.

[0036] Specifically, the controller can be a PLC, a computer, a cup, etc. In the present application, a PLC is preferred. The sensor is a pressure sensor, which is used to detect the air pressure in the exhaust pipe 604. The air pressure is detected by the pressure sensor and then fed back to the PLC, and the PLC starts the solenoid valve.

[0037] like Figure 4As shown, the shape of the grouting cavity 601 is L-shaped, and the partition 603 is completely adapted to the grouting cavity 601. This design can reduce the problem of blockage of the grouting cavity 601.

[0038] like Figure 4 As shown, a plurality of through holes 605 are equidistantly provided on the side of the partition plate 603. By providing the through holes 605, when discharging gas, the grouting cavity in the grouting cavity 601 can be used to release the gas in the filling area more quickly.

[0039] like Figure 6 As shown, a slide groove 606 is provided inside the partition 603 at a position relative to the through hole 605, and a baffle plate 608 is slidably connected to the slide groove 606 via a spring 607. A push plate 609 is provided on the side of the baffle plate 608, and the push plate 609 is arranged on the side of the partition 603. A limiting groove is provided on the side of the partition 603 relative to the position of the push plate 609 for the up and down movement of the push plate 609.

[0040] Specifically, when the grouting material enters the grouting chamber 601, the pressure of the grouting material can push the push plates 609 downward one by one to close the through hole 605. At the same time, the gas in the grouting cavity in the grouting chamber 601 can gradually enter the exhaust cavity through the through hole 605 for discharge, and when the push plate 609 moves downward, the spring 607 can be stretched. After the grouting is completed, the spring 607 can rebound to open the through hole 605. Through this structural design, the gas can be reduced from returning to the filling area.

[0041] Embodiment 2

[0042] This embodiment is further optimized on the basis of the above embodiment, and the same parts as the above technical solution will not be repeated here. Figure 2 and Figure 3 As shown, in order to better realize the present invention, the following setting is particularly adopted: in this embodiment, the driving member 3 includes a frame 300 fixedly mounted on the bracket 2, the top of each threaded rod 4 is arranged in the frame 300, the top of each threaded rod 4 is connected to a toothed belt 301 for transmission, and the top of the frame 300 is equipped with a motor 1 for driving the threaded rods 4 to rotate synchronously.

[0043] Specifically, the motor 1 drives a threaded rod 4 to rotate, thereby rotating the toothed belt 301, so that each threaded rod 4 can rotate synchronously, so that the lifting plate 5 drives the drill rod 600 to move up and down to complete the drilling operation.

[0044] Embodiment 3

[0045] This embodiment is further optimized on the basis of the above embodiment, and the same parts as the above technical solution will not be repeated here. Figure 1 and Figure 2 As shown, in order to better realize the present invention, the following setting is particularly adopted: in this embodiment, the driving member 2 7 includes a motor 2 installed in the lifting plate 5, the output end of the motor 2 is equipped with a driving gear 700, and the top of the drill rod 600 is equipped with a driven gear 701, and the driving gear 700 is meshed and connected with the driven gear 701.

[0046] Specifically, the driving gear 700 is driven to rotate by the second motor, so that the driven gear 701 is rotated, thereby driving the drill rod 600 to rotate.

[0047] The standard parts used in the present invention can all be purchased from the market, and special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here.

[0048] The implementation principle of a ground drilling device for a coal mine grouting filling area according to an embodiment of the present invention is as follows: the threaded rods 4 are driven to rotate synchronously by a driving member 1 3, so that the lifting plate 5 can move on the threaded rods 4, and the drill rod 600 is driven to rotate by a driving member 2 7, so that the drill rod 600 can drill a hole in the ground. When the drill rod 600 penetrates the filling area, the gas in the filling area can enter the exhaust pipe 604 through the grouting chamber 601 and be discharged to the outside. At this time, the slurry can also be injected into the hose 602 through an external grouting equipment, and discharged to the filling area through another cavity in the grouting chamber 601.

[0049] By providing the through hole 605, when discharging the gas, the grouting volume in the grouting chamber 601 can be used, thereby releasing the gas in the filling area more quickly.

[0050] When the grouting material enters the grouting chamber 601, the pressure of the grouting material can push the push plates 609 downward one by one to close the through holes 605. At the same time, the gas in the grouting cavity in the grouting chamber 601 can gradually enter the exhaust cavity through the through holes 605 for discharge. When the push plate 609 moves downward, the spring 607 can be stretched. After the grouting is completed, the spring 607 can rebound to open the through holes 605. Through this structural design, the gas can be reduced from returning to the filling area.

[0051] In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. "Multiple" means two or more, unless otherwise clearly and specifically defined.

[0052] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0053] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0054] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0055] In the drawings of the embodiments disclosed in the present invention, only the structures related to the embodiments disclosed in the present invention are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present invention can be combined with each other.

[0056] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A ground drilling device for coal mine grouting filling area, characterized in that: include: Mobile base (1); A bracket (2) is arranged on the movable base (1), and a driving member (3) is arranged on the top of the bracket (2); A plurality of threaded rods (4) are arranged on the top of the movable base (1), and the driving member (3) is capable of driving each of the threaded rods (4) to rotate synchronously; A lifting plate (5) threadedly connected between each of the threaded rods (4); A drilling and grouting mechanism (6) is arranged on the lifting plate (5); The drilling and grouting mechanism (6) comprises: Rotating a drill rod (600) connected to a lifting plate (5), wherein a second driving member (7) for driving the drill rod (600) to rotate is disposed on the top of the lifting plate (5); A grouting chamber (601) is provided inside the drill rod (600), and a hose (602) for connecting to an external grouting device is provided at the bottom of the drill rod (600); A partition (603) is fixedly disposed in the grouting cavity (601) and separates the grouting cavity (601) into two cavities; An exhaust pipe (604) is connected to the top of the drill rod (600) and is used to discharge the gas in the grouting cavity (601).

2. A ground drilling device for coal mine grouting filling area according to claim 1, characterized in that: An electromagnetic valve is provided between the hose (602) and the grouting chamber (601) for controlling the discharge of grouting. A sensor is provided inside the exhaust pipe (604) for detecting gas discharge. A controller is provided on the drill rod (600) for receiving the electrical signal from the sensor and controlling the start and stop of the electromagnetic valve.

3. The ground drilling equipment for coal mine grouting filling area according to claim 1 is characterized by: The shape of the grouting cavity (601) is L-shaped, and the partition (603) is completely adapted to the grouting cavity (601).

4. The ground drilling equipment for coal mine grouting filling area according to claim 1, characterized in that: A plurality of through holes (605) are equidistantly formed on the side surface of the partition (603).

5. A ground drilling device for coal mine grouting filling area according to claim 4, characterized in that: A slide groove (606) is provided inside the partition (603) relative to the position of the through hole (605); a shielding plate (608) is slidably connected to the slide groove (606) via a spring (607); a push plate (609) is provided on the side of the shielding plate (608), and the push plate (609) is arranged on the side of the partition (603); a limiting groove is provided on the side of the partition (603) relative to the position of the push plate (609) for the up and down movement of the push plate (609).

6. The ground drilling equipment for coal mine grouting filling area according to claim 1, characterized in that: The driving member (3) comprises a frame (300) fixedly mounted on the bracket (2); the top of each threaded rod (4) is arranged in the frame (300); the top of each threaded rod (4) is connected to a toothed belt (301) for transmission; and a motor (1) is mounted on the top of the frame (300) for driving each threaded rod (4) to rotate synchronously.

7. The ground drilling equipment for coal mine grouting filling area according to claim 1 is characterized by: The second driving member (7) comprises a second motor installed in the lifting plate (5), the output end of the second motor is equipped with a driving gear (700), the top of the drill rod (600) is equipped with a driven gear (701), and the driving gear (700) is meshedly connected with the driven gear (701).

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