Anchor drilling machine for coal mining

Abstract

The present invention belongs to the technical field of coal mining equipment, and specifically relates to an anchor drilling machine for coal mining; the machine comprises an extended bottom rod, a base, an anchor body and a waterproof cloth; a movable base is installed at the top of the extended bottom rod; the anchor body is connected to the base so that the anchor body can rotate forward for drilling; an expandable waterproof cloth is arranged at one end of the extended bottom rod close to the drilling head of the anchor body; the waterproof cloth can be automatically expanded when the anchor body is drilled through the coordinated action of threaded rods, connecting rings, struts and bone rods to form a conical protective cover, thereby effectively preventing dust and water from splashing onto the equipment; the present invention adopts a sliding connection design of an L-shaped reinforcement rod and a connecting ball, so that the anchor can be effectively reinforced during the drilling process; this design not only enhances the stability of the anchor rod, but also improves the adaptability of the equipment under complex geological conditions.

Description

Technical Field

[0001] The invention belongs to the technical field of coal mining equipment, in particular to an anchor drilling machine for coal mining. Background Art

[0002] In the process of coal mining, the anchor drill, as a key mechanical equipment, plays a vital role; it is mainly used to install anchors in working environments such as coal mine tunnels to reinforce the tunnel walls, prevent rock collapse, and ensure the safety of mining operations; however, there are some problems that need to be solved in the use of existing anchor drills;

[0003] Firstly, when the existing anchor drilling rig is drilling, a large amount of dust and cooling water will be sprayed out from the end of the anchor rod; these dust and cooling water will not only pollute the working environment, but also adhere to the driving equipment to form stains; these stains will not only affect the appearance of the equipment, but more importantly, they will contaminate the lubricating fluid of the equipment, resulting in a decrease in the lubrication effect and may even cause equipment failure; in addition, the accumulation of stains will also increase the difficulty and cost of equipment maintenance.

[0004] Secondly, the deeper the anchor rod is inserted into the hole, the greater the force on its end. Since the anchor drilling rig needs to withstand this increased force, its driving equipment also needs to have a stronger load-bearing capacity. However, in actual applications, this increased force often causes the driving equipment to bear excessive loads, thereby affecting its service life and reliability. Especially under complex geological conditions, the force conditions of the anchor rod are more complex and changeable, which places higher requirements on the performance and stability of the anchor drilling rig.

[0005] Therefore, it is necessary to provide a new coal mine to adopt the anchor drill to solve the above-mentioned technical problems. Summary of the invention

[0006] The present invention overcomes the shortcomings of the prior art and proposes an anchor drill for coal mining; the present invention is achieved through the following technical solutions:

[0007] An anchor drill used in coal mining, comprising an extended bottom rod, a base, an anchor body and a waterproof cloth; a movable base is installed at the top of the extended bottom rod; a connecting seat is installed on the base, and the connecting seat is rotatably connected to the base; the front end of the anchor body is a drilling head, and the rear end of the anchor body is connected to the connecting seat; a drilling motor and a moving motor are arranged in the base, the moving motor drives the base to move along the axial direction of the extended bottom rod and then drives the anchor body to move forward, and the drilling motor drives the connecting seat to rotate and then drives the anchor body to rotate and drill;

[0008] The end of the extended bottom rod close to the drilling head of the anchor rod body is fixedly connected to an L-shaped bracket, and one end of the L-shaped bracket is fixedly connected to a main rod. The interior of the main rod is hollow and the two ends are connected; the inner diameter of the main rod matches the outer diameter of the anchor rod body so that the anchor rod body can pass through the main rod; the center of the circle of the waterproof cloth is fixedly connected to the outer wall of one end of the main rod, and bone rods are equidistantly installed on the inner circumference of the waterproof cloth, one end of the bone rod is connected to the outer wall of the main rod, and the other end of the bone rod is located at the inner edge of the waterproof cloth; the outer wall of the main rod is slidably connected to a connecting ring, and the outer wall of the connecting ring is equidistantly connected to a support rod, and the end of the support rod away from the connecting ring is rotatably connected to the middle part of the bone rod; one end of the main rod is rotatably connected to a threaded rod, and the two ends of the threaded rod are respectively provided with reset springs, the connecting ring is threadedly connected to the threaded rod, and one end of the threaded rod extends out of the main rod and is fixedly connected to a driving wheel, and the driving wheel is in contact with the anchor rod body.

[0009] Furthermore, the cross-section of the waterproof cloth is a conical structure after being unfolded, and a rubber arc-shaped guide strip 28 is fixedly connected to the edge of the waterproof cloth.

[0010] Furthermore, the edge of the L-shaped bracket is arranged to be inclined.

[0011] Furthermore, the output end of the drilling motor is fixedly connected with a driving gear, the outer wall of the connecting seat is fixedly connected with a driven gear ring, and the driving gear is meshingly connected with the driven gear ring.

[0012] Furthermore, the output end of the movable motor is fixedly connected with a movable gear, the top end of the extended bottom rod is fixedly connected with a matching rack, and the movable gear is meshingly connected with the matching rack.

[0013] Furthermore, the rear end of the anchor rod body is fixedly connected to a reinforcement rod, which is located outside the base; the top of the extended bottom rod is symmetrically and equidistantly installed with L-shaped reinforcement rods that move in opposite directions, and the ends of several L-shaped reinforcement rods away from the extended bottom rod are slidingly connected to two connecting balls; the top of the extended bottom rod is symmetrically and rotationally connected to a worm gear, which is fixedly connected to the bottom end of the L-shaped reinforcement rod, and the inside of the extended bottom rod is equidistantly and rotationally connected to a connecting shaft, and the two ends of the connecting shaft are symmetrically and fixedly connected with worms, and the two worms are meshingly connected to the corresponding worm wheels; a driving gear is fixedly connected to the connecting shaft, and a movable rack is fixedly connected to the rear bottom end of the base, and the movable rack is meshingly connected to the driving gear.

[0014] Furthermore, it also includes a crawler vehicle body; an extended bottom rod is installed on the top of the crawler vehicle body; and the bottom of the extended bottom rod is connected to the crawler vehicle body through a hydraulic cylinder.

[0015] Furthermore, a controller is installed on the top of the crawler vehicle body; the controller is used to drive the crawler vehicle body to move.

[0016] The beneficial effects of the present invention compared with the prior art are as follows:

[0017] The present invention is provided with a waterproof cloth which can be automatically unfolded and closed: the waterproof cloth can automatically unfold when drilling holes in the anchor body through the coordinated action of threaded rods, connecting rings, struts and bone rods to form a conical protective cover, thereby effectively preventing dust and water from splashing onto the equipment; after the drilling is completed, the waterproof cloth can automatically close, thereby simplifying the operation process and protecting the equipment from damage by environmental factors.

[0018] The present invention is provided with a stable reinforcement device: the sliding connection design of the L-shaped reinforcement rod and the connecting ball, and the precise matching of the worm wheel, the worm and the driving gear, so that the anchor rod body can be effectively reinforced during the drilling process; this design not only enhances the stability of the anchor rod, but also improves the adaptability of the equipment under complex geological conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of the structure of an anchor drill rig for coal mining provided by the present invention;

[0020] Figure 2 for Figure 1 The schematic diagram of the structure of the bolting rig used in coal mining shown in another perspective;

[0021] Figure 3 for Figure 1 A schematic diagram of the structure of the inner side of the waterproof cloth shown;

[0022] Figure 4 for Figure 1 A schematic diagram of the structure of the exterior of the waterproof cloth shown;

[0023] Figure 5 It is a schematic diagram of the connection structure between the driving gear and the moving rack according to the present invention;

[0024] Figure 6 It is a schematic diagram of the structure inside the base of the present invention;

[0025] Figure 7 It is a schematic diagram of the connection structure between the reinforcement rod and the anchor rod body described in the present invention.

[0026] Numbers in the figure: 1. Tracked vehicle body; 2. Extended bottom rod; 3. Base; 4. Connecting seat; 5. Reinforcement rod; 6. Waterproof cloth; 7. L-shaped reinforcement rod; 8. Connecting ball; 9. L-shaped bracket; 10. Main rod; 11. Bone rod; 12. Connecting ring; 13. Support rod; 14. Threaded rod; 15. Reset spring; 16. Driving wheel; 17. Drilling motor; 18. Driving gear; 19. Driven gear ring; 20. Worm gear; 21. Connecting shaft; 22. Worm; 23. Driving gear; 24. Moving rack; 25. Moving motor; 26. Moving gear; 27. Matching rack; 28. Rubber arc guide edge strip; 29. ​​Controller; 30. Anchor rod body. DETAILED DESCRIPTION

[0027] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention is further described in detail in conjunction with the embodiments and the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. The technical solutions of the present invention are described in detail below in conjunction with the embodiments and the accompanying drawings, but the scope of protection is not limited thereto.

[0028] See also Figures 1 to 7 The present embodiment proposes an anchor drilling rig for coal mine development, which comprises: a tracked vehicle body 1, an anchor body 30, a waterproof cloth 6 and an L-shaped reinforcement rod 7; an extended bottom rod 2 is hinged at the top of the tracked vehicle body 1; the middle part of the extended bottom rod 2 is connected to the tracked vehicle body 1 through a hydraulic cylinder, so that the angle of the extended bottom rod 2 can be adjusted; a movable base 3 is installed on the extended bottom rod 2; a connecting seat 4 is installed on the base 3, and the connecting seat 4 is rotatably connected to the base 3; the interior of the connecting seat 4 is a hollow structure, and the inner wall of the hollow structure is an internal thread, the rear end of the anchor body 30 is provided with an external thread, and the interior of the connecting seat 4 is threadedly connected to the rear end of the anchor body 30; the front end of the anchor body 30 is a drilling head.

[0029] A drilling motor 17 is installed inside the base 3. The output end of the drilling motor 17 is fixedly connected to a driving gear 18. The outer wall of the connecting seat 4 is fixedly connected to a driven gear ring 19. The driving gear 18 is meshed with the driven gear ring 19. When the drilling motor 17 is turned on, the drilling motor 17 drives the connecting seat 4 to rotate through the cooperation of the driving gear 18 and the driven gear ring 19, thereby driving the anchor body 30 to rotate. A moving motor 25 is installed inside the base 3. The output end of the moving motor 25 is fixedly connected to a moving gear 26. The top of the extended bottom rod 2 is fixedly connected to a matching rack 27. The moving gear 26 is meshed with the matching rack 27. After the moving motor 25 is turned on, the moving gear 26 and the matching rack 27 are used to drive the base 3 to move axially along the extended bottom rod 2, thereby driving the anchor body 30 to rotate and drill.

[0030] The end of the extended bottom rod 2 close to the drilling head of the anchor body 30 is fixedly connected with an L-shaped bracket 9, and one end of the L-shaped bracket 9 is fixedly connected with a main rod 10. The interior of the main rod 10 is hollow and the two ends are connected; the inner diameter of the main rod 10 matches the outer diameter of the anchor body 30, so that the anchor body 30 can pass through the main rod 10. The center of the circle of the waterproof cloth 6 is fixedly connected to the outer wall of one end of the main rod 10, and the inner circumference of the waterproof cloth 6 is equidistantly installed with a bone rod 11, one end of the bone rod 11 is connected to the outer wall of the main rod 10, and the other end of the bone rod 11 is located at the inner edge of the waterproof cloth 6; the outer wall of the main rod 10 is slidably connected with a connecting ring 12, and the outer wall of the connecting ring 12 is equidistantly connected with a support rod 13, and the end of the support rod 13 away from the connecting ring 12 is rotatably connected to the middle of the bone rod 11.

[0031] One end of the main rod 10 is rotatably connected to a threaded rod 14, and both ends of the threaded rod 14 are respectively sleeved with a return spring 15, and the connecting ring 12 is threadedly connected to the threaded rod 14. One end of the threaded rod 14 extends out of the main rod 10 and is fixedly connected to a driving wheel 16, and the driving wheel 16 is in contact with the anchor rod body 30. After the waterproof cloth 6 is unfolded, the cross-section is designed to be conical, and the edge of the waterproof cloth 6 is fixedly connected to a rubber arc-shaped guide strip 28, and the edge of the L-shaped bracket 9 is set in an inclined surface. During the drilling operation, as the anchor rod body 30 drills and rotates, the driving wheel 16 contacts and rotates with the anchor rod body 30; the rotation of the driving wheel 16 drives the threaded rod 14 to rotate, and then drives the connecting ring 12 to slide along the main rod 10 through the threaded connection; the sliding of the connecting ring 12 drives the opening of the support rod 13, and then props up the bone rod 11 and unfolds the waterproof cloth 6, forming a conical protective cover, which effectively prevents dust and water generated during the drilling process from splashing onto the equipment.

[0032] The rear end of the anchor body 30 is fixedly connected to a reinforcement rod 5, which is located outside the base 3. The top of the extended bottom rod 2 is symmetrically and equidistantly installed with L-shaped reinforcement rods 7 that move in opposite directions, and the ends of several L-shaped reinforcement rods 7 away from the extended bottom rod 2 are slidably connected to two connecting balls 8. The top of the extended bottom rod 2 is symmetrically and rotationally connected to a worm gear 20, which is fixedly connected to the bottom end of the L-shaped reinforcement rod 7. The inside of the extended bottom rod 2 is equidistantly and rotationally connected to a connecting shaft 21, and the two ends of the connecting shaft 21 are symmetrically and fixedly connected to worms 22, and the two worms 22 are meshed with the corresponding worm gears 20; a driving gear 23 is fixedly connected to the connecting shaft 21, and a movable rack 24 is fixedly connected to the rear bottom end of the base 3, and the movable rack 24 is meshed with the driving gear 23; with the continuous movement of the base 3 and the anchor body 3 0, the movable rack 24 at the bottom of the base 3 will mesh with the driving gear 23 arranged in sequence inside the extended bottom rod 2; the rotation of the corresponding driving gear 23 drives the rotation of the connecting shaft 21 and the worm 22; the rotation of the worm 22 further drives the worm wheel 20 and the corresponding L-shaped reinforcement rod 7 to rotate in the opposite direction; as the L-shaped reinforcement rod 7 rotates, the two connecting balls 8 gradually approach and abut against one end of the reinforcement rod 5, slidingly clamping and fixing the reinforcement rod 5, thereby enhancing the stability of the anchor rod body 30 during the drilling process.

[0033] A controller 29 is installed at the top of the crawler vehicle body 1; the controller 29 is used to control the crawler vehicle body 1 to move, and then move the entire device to a designated working position.

[0034] The working principle of the anchor drill for coal mining provided by the present invention is as follows:

[0035] 1. Equipment initial status and preparation

[0036] Installation of anchor body 30:

[0037] The anchor rod body 30 is threadedly connected to the internal thread in the connection seat 4 through its external thread; this connection method ensures that the anchor rod body 30 can be firmly installed on the connection seat 4, and is convenient for subsequent disassembly and replacement;

[0038] Installation of waterproof cloth 6 and skeleton rod 11:

[0039] The center of the waterproof cloth 6 is fixedly connected to one end of the main rod 10; the inner side of the waterproof cloth 6 is equidistantly installed with bone rods 11, which play a supporting role when the waterproof cloth 6 is unfolded;

[0040] Preparation of L-shaped reinforcement rod 7 and connecting ball 8:

[0041] The top end of the extended bottom rod 2 is symmetrically and equidistantly mounted with L-shaped reinforcement rods 7 that move in opposite directions. These L-shaped reinforcement rods 7 are slidably connected to the movable reinforcement rods 5 via connecting balls 8 so as to slidably clamp the reinforcement rods 5 when needed.

[0042] 2. Equipment Movement and Positioning

[0043] Movement of the crawler vehicle body 1:

[0044] By operating the controller 29 on the crawler body 1, the crawler body 1 is controlled to move the entire device to a designated working position; the mobility of the crawler enables the anchor drill to easily adapt to different working environments;

[0045] The start-up of the mobile motor 25 and the gear meshing:

[0046] Start the moving motor 25 inside the base 3, and its output end drives the moving gear 26 to rotate; the moving gear 26 is tightly engaged with the matching rack 27 at the top of the extended bottom rod 2, thereby driving the entire base 3 to move precisely along the extended bottom rod 2 until it reaches the predetermined drilling position.

[0047] 3. Drilling operation and deployment of waterproof cloth 6

[0048] Start-up of drilling motor 17 and gear meshing:

[0049] When the anchor drilling machine is positioned, the drilling motor 17 inside the base 3 is started; the output end of the drilling motor 17 drives the driving gear 18 to rotate, and the driving gear 18 is tightly meshed with the driven gear ring 19 on the outer wall of the connecting seat 4, thereby driving the connecting seat 4 and the anchor body 30 to rotate and perform the drilling operation;

[0050] The drilling head of the anchor body 30 rotates and moves forward, and passes through the main rod 10, so that the drilling head is exposed before drilling; and, in this process, as the anchor body 30 rotates, the driving wheel 16 contacts the anchor body 30 and rotates accordingly; the rotation of the driving wheel 16 drives the threaded rod 14 to rotate, and then drives the connecting ring 12 to slide along the main rod 10 through the threaded connection; the sliding of the connecting ring 12 drives the opening of the support rod 13, and then props up the bone rod 11 and unfolds the waterproof cloth 6, forming a conical protective cover, which effectively prevents dust and water generated during the drilling process from splashing onto the equipment.

[0051] 4. Collaborative work of reinforcement devices

[0052] Rotation and fixation of L-shaped reinforcement rod 7:

[0053] As the base 3 continues to move and the anchor body 30 is drilled deeper, the moving rack 24 at the bottom of the base 3 engages with the driving gear 23; the rotation of the driving gear 23 drives the rotation of the connecting shaft 21 and the worm 22; the rotation of the worm 22 further drives the worm wheel 20 and the corresponding L-shaped reinforcement rod 7 to rotate in opposite directions; as the L-shaped reinforcement rod 7 rotates, the two connecting balls 8 gradually approach and abut against one end of the reinforcement rod 5, clamping the reinforcement rod 5, thereby enhancing the stability of the anchor body 30 during the drilling process.

[0054] 5. Function of the return spring 15 and closing of the waterproof cloth 6

[0055] The return springs 15 at both ends of the threaded rod 14 play a key role when the tarpaulin 6 is unfolded or closed; they ensure that the connecting ring 12 always remains in a state of waiting for threaded connection on the threaded rod 14, thereby simplifying the unfolding and closing process of the tarpaulin 6 and improving the reliability and durability of the equipment.

[0056] 6. Other design features

[0057] The waterproof cloth 6 has a conical cross-section after being unfolded, and a rubber arc-shaped guide strip 28 is fixedly connected to the edge. This design further enhances the waterproof and dustproof effect of the waterproof cloth 6.

[0058] The edge of the L-shaped bracket 9 is designed to be inclined, which helps to guide the coolant sprayed from the drill hole to the waterproof cloth 6 and flow along the conical slope of the waterproof cloth 6.

[0059] The above content is a further detailed description of the present invention in combination with a specific preferred embodiment. It cannot be determined that the specific embodiments of the present invention are limited to this. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the present invention, which should be regarded as belonging to the present invention and the scope of patent protection determined by the submitted claims.

Claims

1. A bolting rig for coal mining, characterized in that: The invention comprises an extended bottom rod (2), a base (3), an anchor rod body (30) and a waterproof cloth (6); a movable base (3) is installed on the extended bottom rod (2); a connecting seat (4) is installed on the base (3), and the connecting seat (4) is rotatably connected to the base (3); the front end of the anchor rod body (30) is a drilling head, and the rear end of the anchor rod body (30) is connected to the connecting seat (4); a drilling motor (17) and a moving motor (25) are arranged in the base (3); the moving motor (25) drives the base (3) to move axially along the extended bottom rod (2) and then drives the anchor rod body (30) to move forward; the drilling motor (17) drives the connecting seat (4) to rotate and then drives the anchor rod body (30) to rotate and drill; An L-shaped bracket (9) is fixedly connected to one end of the extended bottom rod (2) close to the drilling head of the anchor rod body (30), and one end of the L-shaped bracket (9) is fixedly connected to a main rod (10). The interior of the main rod (10) is hollow and the two ends are connected. The inner diameter of the main rod (10) matches the outer diameter of the anchor rod body (30) so that the anchor rod body (30) can pass through the main rod (10). The center of the circle of the waterproof cloth (6) is fixedly connected to the outer wall of one end of the main rod (10). The inner circumference of the waterproof cloth (6) is equidistantly installed with bone rods (11). One end of the bone rod (11) is connected to the outer wall of the main rod (10), and the other end of the bone rod (11) is located at the inner edge of the waterproof cloth (6); the outer wall of the main rod (10) is slidably connected to a connecting ring (12), and the outer wall of the connecting ring (12) is equidistantly connected to a support rod (13), and one end of the support rod (13) away from the connecting ring (12) is rotatably connected to the middle part of the bone rod (11); one end of the main rod (10) is rotatably connected to a threaded rod (14), and both ends of the threaded rod (14) are respectively sleeved with a return spring (15), and the connecting ring (12) and The threaded rod (14) is threadedly connected, one end of the threaded rod (14) extends out of the main rod (10) and is fixedly connected to a driving wheel (16), the driving wheel (16) is in contact with the anchor rod body (30), and the rear end of the anchor rod body (30) is fixedly connected to a reinforcing rod (5), and the reinforcing rod (5) is located outside the base (3); the top of the extended bottom rod (2) is symmetrically and equidistantly mounted with L-shaped reinforcing rods (7) that move in opposite directions, and the ends of the L-shaped reinforcing rods (7) away from the extended bottom rod (2) are slidably connected to two connecting balls (8); the top of the extended bottom rod (2) is fixedly connected to the reinforcing rod (5), and the reinforcing rod (5) is fixedly connected to the reinforcing rod (5). The ends of the base (3) are symmetrically rotatably connected with a worm wheel (20), the worm wheel (20) is fixedly connected to the bottom end of the L-shaped reinforcement rod (7), the extended bottom rod (2) is symmetrically rotatably connected with a connecting shaft (21) inside, the two ends of the connecting shaft (21) are symmetrically fixedly connected with worms (22), and the two worms (22) are meshingly connected with the corresponding worm wheels (20); the connecting shaft (21) is fixedly connected with a driving gear (23), and the rear part of the bottom end of the base (3) is fixedly connected with a moving rack (24), and the moving rack (24) is meshingly connected with the driving gear (23).

2. The anchor drilling rig for coal mining according to claim 1, characterized in that: The waterproof cloth (6) has a conical cross-section when unfolded, and a rubber arc-shaped flow-guiding edge strip (28) is fixedly connected to the edge of the waterproof cloth (6).

3. The anchor drilling rig for coal mining according to claim 1, characterized in that: The edge of the L-shaped bracket (9) is arranged in a beveled shape.

4. The anchor drilling rig for coal mining according to claim 1, characterized in that: The output end of the drilling motor (17) is fixedly connected to a driving gear (18), the outer wall of the connecting seat (4) is fixedly connected to a driven gear ring (19), and the driving gear (18) is meshingly connected to the driven gear ring (19).

5. The anchor drilling rig for coal mining according to claim 1, characterized in that: The output end of the moving motor (25) is fixedly connected to a moving gear (26), the top end of the extended bottom rod (2) is fixedly connected to a matching rack (27), and the moving gear (26) is meshingly connected to the matching rack (27).

6. The anchor drilling rig for coal mining according to claim 1, characterized in that: It also includes a crawler vehicle body (1); an extended bottom rod (2) hinged to the top of the crawler vehicle body (1); and a middle portion of the extended bottom rod (2) is connected to the crawler vehicle body (1) via a hydraulic cylinder.

7. The anchor drilling machine for coal mining according to claim 1, characterized in that: A controller (29) is installed at the top of the crawler vehicle body (1); the controller (29) is used to control the movement of the crawler vehicle body (1).

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