Auxiliary automatic grouting device for directional long drill hole in underground coal mine

Abstract

The utility model discloses an auxiliary automatic grouting device for a directional long drill hole in an underground coal mine, and relates to the technical field of coal mining. The grouting device comprises a grouting mechanism, a piston is arranged in a material barrel, a motor is arranged above a moving column, a screw rod in threaded connection with the moving column is fixedly arranged on a power output shaft of the motor, a mounting box is arranged in front of the material barrel, an air inlet pipe is fixedly arranged on the upper wall of the mounting box, and a plurality of air inlet branch pipes are fixedly arranged on the lower wall of the mounting box; a fixing plate is arranged below the placing plate, universal wheels are fixedly arranged at the front and rear ends of the right side of the lower wall of the fixing plate, motors are arranged at the front and rear ends of the left side of the lower wall of the fixing plate, and rollers are fixedly arranged on power output shafts of the motors. According to the slurry conveying device, the piston moves downwards to extrude slurry in the material barrel for slurry conveying, an external air source can penetrate through the air inlet pipe and the air inlet branch pipe to enter the material barrel for slurry conveying, the rollers are driven by the motor to rotate, and the slurry conveying device is convenient to move under the cooperation of the universal wheels.

Description

Technical Field

[0001] This utility model belongs to the field of coal mining technology, and in particular relates to an automatic grouting device for directional long boreholes in coal mines. Background Technology

[0002] Directional long borehole grouting in coal mines involves setting up directional long boreholes underground and then injecting grouting materials (such as cement grout, chemical grout, etc.) into the boreholes to achieve roadway support or prevent water hazards. It is used for mine water control, roadway reinforcement, improving rock stability, and preventing gas infiltration. During the grouting process, automatic grouting devices are often used to deliver the grout into the borehole.

[0003] A search revealed that authorization announcement number CN216498869U, with an authorization announcement date of May 13, 2022, discloses an automatic grouting device for underground mines, belonging to the field of mining technology. The device includes a base, a mixing tank on the upper side of the base, a discharge pipe at the lower end of the mixing tank, a pump body at the upper end of the base corresponding to the discharge pipe, a mixing device inside the mixing tank, and feed pipes on both sides of the upper end of the mixing tank. A filter plate is installed on the lower side of the inside of the feed pipe. This invention utilizes a dredging column. When the raw material inside the mixing tank becomes blocked in the discharge pipe, an electric push rod is activated. The electric push rod extends and retracts, driving a moving seat via a sliding rod. Simultaneously, the dredging column at the lower end of the moving seat dredges the upper end of the discharge pipe, allowing the raw material inside the mixing tank to enter the discharge pipe more smoothly. By using the dredging column, the device effectively dredges the inside of the mixing tank, preventing blockages that could affect its normal operation.

[0004] Existing technologies rely solely on pumps to transport slurry. However, in practical applications, this method is limited, and normal transport becomes impossible if the pump fails. Furthermore, existing technologies are bulky and heavy, making them difficult to move. Therefore, we provide an automatic grouting device for directional long borehole drilling in coal mines to address these issues. Utility Model Content

[0005] The purpose of this utility model is to provide an automatic grouting device for directional long borehole drilling in coal mines. The device delivers grout by squeezing the grout in the material bucket through a piston moving downwards. It can also deliver grout by allowing external air to enter the material bucket through the air inlet pipe and air inlet branch pipe. The device is driven by an electric motor to rotate rollers, which are easy to move with the help of casters. This solves the problems of existing technology, which only uses a delivery pump to deliver grout. However, in actual use, the delivery method is relatively simple, and normal delivery cannot be achieved when the delivery pump is damaged. In addition, the existing technology is inconvenient to move due to its large size and weight.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0007] This utility model relates to an automatic grouting device for directional long drilling in coal mines, comprising a grouting mechanism. The grouting mechanism includes a material barrel, inside which is a piston. A rectangular movable column is fixed to the upper wall of the piston. A motor is located above the movable column, and a screw threadedly connected to the movable column is fixed to the power output shaft of the motor. A mounting box is located in front of the material barrel, with an air inlet pipe fixed to the upper wall of the mounting box and multiple air inlet branch pipes fixed to the lower wall of the mounting box. A moving mechanism is located below the grouting mechanism, including a placement plate located on the lower wall of the material barrel. A fixing plate is located below the placement plate. Universal wheels are fixed to the front and rear ends of the right side of the lower wall of the fixing plate, and motors are fixed to the front and rear ends of the left side of the lower wall of the fixing plate. Rollers are fixed to the power output shaft of the motors.

[0008] The present invention is further configured such that a cover plate is provided on the outer gap of the moving column, the cover plate is detachably fixed to the material bucket, and a U-shaped mounting plate is fixed on the upper wall of the cover plate, and the motor is fixedly connected to the mounting plate.

[0009] The present invention is further configured such that a feed pipe is fixedly provided on the upper side of the outer peripheral wall of the material barrel, and a pipe cap is threadedly connected to the upper end of the feed pipe.

[0010] The present invention is further configured such that the other ends of multiple air intake branches are fixed at equal intervals from top to bottom on the peripheral wall of the material barrel.

[0011] The present invention is further configured such that a slurry outlet pipe is fixedly provided at the bottom of the outer peripheral wall of the hopper, and a valve is fixedly provided at the other end of the slurry outlet pipe.

[0012] The present invention is further configured such that a limiting ring that fits the gap between the material bucket and the upper wall of the placement plate is fixedly provided on the outside of the material bucket, and a T-shaped operating rod is fixedly provided on the right side of the upper wall of the placement plate.

[0013] The present invention is further configured such that dampers are fixedly provided at the four corner positions of the upper wall of the fixed plate, the upper end of the damper is fixedly connected to the placement plate, and the outside of the damper is provided with an elastic element, the two ends of the elastic element abutting against the corresponding placement plate and the fixed plate respectively.

[0014] The present invention is further configured such that a side plate fixed to the fixing plate is provided on one side of the motors that are close to each other, and the motors are fixedly connected to the side plate.

[0015] This utility model has the following beneficial effects:

[0016] 1. This utility model, by setting up a motor, screw, moving column, piston, air inlet pipe, and air inlet branch pipe, utilizes the motor to drive the screw to rotate, thereby moving the moving column and causing the piston to move downward inside the material bucket, which can squeeze the slurry inside the bucket and discharge it, thus achieving slurry transportation. Furthermore, by connecting to an external air source through the air inlet pipe, the external air source sequentially passes through the air inlet pipe, mounting box, and air inlet branch pipe to enter the material bucket, squeezing the slurry inside the bucket and discharging it, thus achieving slurry transportation. Compared with the prior art, both of these methods can be used to transport slurry, allowing the alternative method to be used if either method fails, ensuring smooth slurry transportation. This solves the problem that the prior art only uses a pump to transport slurry, but in actual use, due to the limited transportation method, normal transportation cannot be achieved when the pump fails.

[0017] 2. This utility model, by setting up an electric motor, rollers, and casters, enables the electric motor to drive the rollers to rotate, and with the cooperation of the casters, the moving mechanism moves, thereby driving the grouting mechanism to move. It can move without manual operation, making movement more convenient and solving the problem of inconvenient movement caused by the large size and weight of the existing technology. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is an overall structural diagram of an automatic grouting device for directional long borehole drilling in coal mines.

[0020] Figure 2 This is a structural diagram of the grouting mechanism.

[0021] Figure 3 This is an exploded view of part of the grouting mechanism.

[0022] Figure 4 for Figure 2 Another perspective on the structure.

[0023] Figure 5 This is a structural diagram of the moving mechanism.

[0024] The attached diagram lists the components represented by each number as follows:

[0025] 1-Grouting mechanism, 101-Motor, 101a-Screw, 102-Moving column, 103-Feed pipe, 103a-Pipe cover, 104-Material bucket, 105-Mounting box, 105a-Air inlet pipe, 105b-Air inlet branch pipe, 106-Grouting outlet pipe, 106a-Valve, 107-Cover plate, 107a-Mounting plate, 108-Piston, 2-Moving mechanism, 201-Placing plate, 201a-Limiting ring, 201b-Operating lever, 202-Fixing plate, 202a-Elastic element, 202b-Wheel caster, 202c-Side plate, 202d-Damper, 203-Motor, 203a-Roller. Detailed Implementation

[0026] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0027] Example 1

[0028] Please see Figure 1-4 This utility model relates to an automatic grouting device for directional long drilling in coal mines, comprising a grouting mechanism 1. The grouting mechanism 1 includes a material tank 104, inside which is a piston 108. The piston 108 cooperates with the material tank 104. When the piston 108 moves downward inside the material tank 104, it compresses the internal space of the material tank 104, allowing the grout inside the material tank 104 to pass through the grout outlet pipe 106 and be discharged, thus achieving conveying. A rectangular cross-section movable column 102 is fixedly mounted on the upper wall of the piston 108. A motor 101 is mounted above the movable column 102. A screw 101a, threadedly connected to the movable column 102, is fixedly mounted on the power output shaft of the motor 101. The motor 101 drives the screw 101a... Rotating 01a causes the moving column 102 to move accordingly, which in turn drives the piston 108 to move up and down accordingly. A mounting box 105 is provided in front of the material barrel 104. An air inlet pipe 105a is fixed on the upper wall of the mounting box 105. The end of the air inlet pipe 105a away from the material barrel 104 is connected to an external high-pressure air source. Multiple air inlet branch pipes 105b are fixed on the lower wall of the mounting box 105. The interior of the air inlet pipe 105a and the air inlet branch pipes 105b are connected to the interior of the mounting box 105. A solenoid valve is also fixed in series on the air inlet pipe 105a. When the solenoid valve is opened, the external air source enters the material barrel 104 through the air inlet pipe 105a and the air inlet branch pipes 105b, which can discharge the slurry and achieve the effect of conveying the slurry.

[0029] Specifically, the external clearance fit of the moving column 102 is provided with a cover plate 107, the cover plate 107 is detachably fixed to the material barrel 104, and the piston 108 can be easily maintained by removing the cover plate 107. The upper wall of the cover plate 107 is fixed with a U-shaped mounting plate 107a, and the motor 101 is fixedly connected to the mounting plate 107a.

[0030] A feed pipe 103 is fixedly provided on the upper side of the outer peripheral wall of the material barrel 104. The inside of the feed pipe 103 is connected to the inside of the material barrel 104. The upper end of the feed pipe 103 is threadedly connected to a pipe cover 103a. The outer peripheral wall of the pipe cover 103a is also provided with anti-slip texture. With the above configuration, the pipe cover 103a can be disassembled and assembled by rotating the outer peripheral wall of the pipe cover 103a.

[0031] The other ends of multiple air inlet branch pipes 105b are fixed at equal intervals from top to bottom on the peripheral wall of the material tank 104. The interior of the air inlet branch pipes 105b is connected to the interior of the material tank 104. By using an external air source to enter the material tank 104, not only can the purpose of conveying slurry be achieved, but when the pipe cover 103a is opened, the interior of the material tank 104 is connected to the outside, and an external air source can also be used to enter the material tank 104 to impact the slurry, so that the slurry movement state can achieve the effect of mixing the slurry.

[0032] A slurry outlet pipe 106 is fixedly provided at the bottom of the outer peripheral wall of the material bucket 104. The interior of the slurry outlet pipe 106 is connected to the interior of the material bucket 104. A valve 106a is fixedly provided at the other end of the slurry outlet pipe 106. When conveying slurry, the slurry can be injected by opening the valve 106a to allow external air to enter the material bucket 104, or by making the motor 101 work.

[0033] The operation process of this embodiment is as follows: Operate and open the pipe cover 103a and valve 106a, so that the motor 101 works and drives the screw 101a to rotate. At this time, the moving column 102 moves upward and drives the piston 108 to move upward until the horizontal plane of the lower wall of the piston 108 is higher than the horizontal plane of the feed pipe 103 and the material bucket 104. Close the valve 106a. At this time, the slurry is injected into the interior of the material bucket 104 through the feed pipe 103.

[0034] After injection, tighten the cap 103a to enable the motor 101 to work and drive the screw 101a to rotate. This causes the moving column 102 to move down, which in turn moves the piston 108 down to compress the slurry inside the hopper 104. At the same time, open the valve 106a and orient it toward the drilling position to inject slurry. Alternatively, when the piston 108 is in its original position, allow external air to pass through the air inlet pipe 105a, the mounting box 105, and the air inlet branch pipe 105b. At this time, the internal pressure of the hopper 104 is higher than the external pressure. Orient the valve 106a toward the drilling position and open the valve 106a to inject slurry.

[0035] Example 2

[0036] Please see Figure 1 and 5 This is the second embodiment of the present invention. This embodiment is based on the previous embodiment, but differs from the first embodiment in that: a moving mechanism 2 is provided below the grouting mechanism 1. The moving mechanism 2 includes a placement plate 201 provided on the lower wall of the material bucket 104. A fixing plate 202 is provided below the placement plate 201. Universal wheels 202b are fixed at both the front and rear ends of the right side of the lower wall of the fixing plate 202. The universal wheels 202b have a built-in braking function. Motors 203 are provided at both the front and rear ends of the left side of the lower wall of the fixing plate 202. Rollers 203a are fixed on the power output shaft of the motors 203. With the above arrangement, by using the operation of the motors 203 to drive the rollers 203a to rotate, the moving mechanism 2 can be moved under the action of the universal wheels 202b, so that the grouting mechanism 1 can be moved without human intervention or external mobile equipment.

[0037] Specifically, a limiting ring 201a that is in clearance fit with the upper wall of the placement plate 201 is fixed on the outside of the material barrel 104 to limit the material barrel 104. A T-shaped operating rod 201b is fixed on the right side of the upper wall of the placement plate 201. The direction of movement can be controlled by controlling the operating rod 201b.

[0038] Dampers 202d are fixed at the four corners of the upper wall of the fixed plate 202. The upper end of the damper 202d is fixedly connected to the placement plate 201. An elastic element 202a is provided on the outside of the damper 202d. The two ends of the elastic element 202a abut against the corresponding placement plate 201 and fixed plate 202 respectively. The above arrangement achieves the buffering and shock absorption effect during movement through the cooperation of the elastic element 202a and the damper 202d.

[0039] The motor 203 has a side plate 202c fixed to the fixed plate 202 on one side close to each other, and the motor 203 is fixedly connected to the side plate 202c;

[0040] The operation process of this embodiment is as follows: by controlling the operating lever 201b, the motor 203 is made to drive the roller 203a to rotate, and the universal wheel 202b is used to move the moving mechanism 2, thereby driving the grouting mechanism 1 on the moving mechanism 2 to move, making the movement more convenient.

[0041] It should be noted that the motor 101 and motor 203 in the underground directional long borehole auxiliary automatic grouting device of this coal mine are electrically connected to the controller through conductive wires, and the controller is electrically connected to the battery (not shown in the figure) through conductive wires. The battery can be fixed on the upper surface of the placement plate 201. At the same time, the motor 101, motor 203 and controller are all existing technologies, and their models are not limited here. In addition, a 1.5 times pressure safety valve is also fixed on the periphery of the material barrel 104.

[0042] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

Claims

1. An automatic grouting device for directional long borehole drilling in coal mines, comprising a grouting mechanism (1), characterized in that: The grouting mechanism (1) includes a material barrel (104), inside which is provided a piston (108). A movable column (102) with a rectangular cross-section is fixed on the upper wall of the piston (108). A motor (101) is provided above the movable column (102). A screw (101a) that is threadedly connected to the movable column (102) is fixed on the power output shaft of the motor (101). An installation box (105) is provided in front of the material barrel (104). An air inlet pipe (105a) is fixed on the upper wall of the installation box (105), and multiple air inlet branch pipes (105b) are fixed on the lower wall of the installation box (105). The grouting mechanism (1) is provided with a moving mechanism (2) below it. The moving mechanism (2) includes a placement plate (201) on the lower wall of the material bucket (104). A fixing plate (202) is provided below the placement plate (201). Universal wheels (202b) are fixed at both ends of the right side of the lower wall of the fixing plate (202). Motors (203) are provided at both ends of the left side of the lower wall of the fixing plate (202). Rollers (203a) are fixed on the power output shaft of the motor (203).

2. The automatic grouting device for directional long borehole drilling in coal mines according to claim 1, characterized in that: The movable column (102) is fitted with a cover plate (107) with an external clearance. The cover plate (107) is detachably fixed to the material bucket (104). The upper wall of the cover plate (107) is fixed with a U-shaped mounting plate (107a). The motor (101) is fixedly connected to the mounting plate (107a).

3. The automatic grouting device for directional long borehole drilling in coal mines according to claim 1, characterized in that: A feed pipe (103) is fixedly provided on the upper side of the outer peripheral wall of the feed hopper (104), and a pipe cap (103a) is threadedly connected to the upper end of the feed pipe (103).

4. The automatic grouting device for directional long borehole drilling in coal mines according to claim 3, characterized in that: The other ends of the plurality of the aforementioned air intake branches (105b) are fixed at equal intervals from top to bottom on the periphery of the material barrel (104).

5. The automatic grouting device for directional long borehole drilling in coal mines according to claim 4, characterized in that: A slurry outlet pipe (106) is fixedly provided at the bottom of the outer peripheral wall of the material bucket (104), and a valve (106a) is fixedly provided at the other end of the slurry outlet pipe (106).

6. The automatic grouting device for directional long borehole drilling in coal mines according to claim 1, characterized in that: The upper wall of the placement plate (201) corresponding to the outer side of the material bucket (104) is fixed with a limiting ring (201a) that is in clearance fit with the material bucket (104), and a T-shaped operating rod (201b) is fixed on the right side of the upper wall of the placement plate (201).

7. The automatic grouting device for directional long borehole drilling in coal mines according to claim 6, characterized in that: Dampers (202d) are fixed at the four corners of the upper wall of the fixed plate (202). The upper end of the damper (202d) is fixedly connected to the placement plate (201). An elastic element (202a) is provided on the outside of the damper (202d). The two ends of the elastic element (202a) abut against the corresponding placement plate (201) and fixed plate (202) respectively.

8. The automatic grouting device for directional long borehole drilling in coal mines according to claim 7, characterized in that: The motors (203) are provided with side plates (202c) that are fixed to the fixing plate (202) on one side close to each other, and the motors (203) are fixedly connected to the side plates (202c).

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