Automatic anchor rod bin tightening device for coal mine

Abstract

The invention provides an automatic anchor rod bin tightening device for a coal mine, which comprises a main frame, a rotary oil cylinder, a first clamping chuck, an automatic locking mechanism, a second clamping chuck and a connecting mechanism, the first clamping chuck is connected with the second clamping chuck through a main connecting rod, and an anchor rod is clamped and fixed between the first clamping chuck and the second clamping chuck; the main frame is connected with the rotary oil cylinder and the chuck shield, the main connecting rod is connected with the rotary oil cylinder, and a plurality of automatic locking mechanisms are arranged on the first clamping chuck and the second clamping chuck. The clamping device is scientific and reasonable in structural design and stable in clamping, the anchor rod is firmly limited in an anchor rod bin by combining multiple modes of fixing and limiting, safety and reliability are achieved, and powerful support is provided for coal mine roadway operation.

Description

Technical Field

[0001] The present invention relates to a supporting device for a coal mine drilling rig, and particularly to an automatic clamping bolt bin device for coal mines. Background Art

[0002] According to the actual requirements of underground coal mine operation technology, the application of automated anchoring drilling rigs in the field of coal mine roadway support will be a trend in the future coal industry. However, for an automated anchoring drilling rig to achieve automatic bolt and cable support, it requires a stable bolt and cable fixing bin (hereinafter referred to as a bolt bin). The bolt bin often operates in a harsh and complex environment and moves along with the drilling rig operation. When the bolt drilling rig encounters a hard rock wall during operation, the reaction force from the coal wall on the fuselage is large, and the vibration of the fuselage will increase significantly, resulting in the bolts and cables in the bolt bin being extremely prone to loosening and even having the risk of falling off. At present, most bolt bins on the market have simple clamping, a single method, and are extremely prone to failure in the complex operation environment of coal mine roadways. Among them, the magnet adsorption type has too small adsorption torque, a single torque, and is extremely prone to magnet touch damage, with poor reliability. The polyurethane block extrusion type uses the elasticity of materials such as polyurethane itself to fasten bolts and cables using the material's own properties. However, the regular hexagon of the drill pipe itself and small and medium-sized particles such as coal slag scattered on the coal wall in the roadway will cause irreversible damage to the polyurethane material during the repeated removal and storage of the drill pipe, that is, the polyurethane block destructive extrusion is extremely prone to performance failures, affecting the overall tunneling speed and production efficiency; at the same time, due to the exclusivity of the elasticity of the polyurethane material in this solution, the fastened drill pipe will be stressed in multiple directions and is extremely prone to automatic falling off of the drill pipe under high-frequency vibration.

[0003] Based on this, it is necessary to develop an automatic clamping bolt bin device for coal mines that is vibration-proof and has the function of locking bolts and cables. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide an automatic clamping bolt bin device for coal mines in view of the deficiencies of the above-mentioned prior art. The device has a scientific and reasonable structural design, firm clamping, and combines various methods of fixed limit to firmly restrict the bolts in the bolt bin, which is safe and reliable and provides strong support for coal mine roadway operations.

[0005] To solve the above technical problem, the technical solution adopted by the present invention is: an automatic clamping bolt bin device for coal mines, characterized by comprising a main frame, a slewing cylinder, a first clamping chuck, an automatic locking mechanism, a second clamping chuck, and a connecting mechanism. The first clamping chuck is connected to the second clamping chuck through a main connecting rod, and bolts are clamped and fixed between the first clamping chuck and the second clamping chuck. The main frame is connected to the slewing cylinder and a chuck guard, the main connecting rod is connected to the slewing cylinder, and multiple automatic locking mechanisms are arranged on the first clamping chuck and the second clamping chuck; A plurality of arc-shaped card slots for cooperatively clamping the anchor rod are equidistantly arranged on the circumferences of the first clamping chuck and the second clamping chuck; The automatic locking mechanism includes a gland, a pressing slider, a main frame and a spring. The main frame is connected to the first clamping chuck and the second clamping chuck, the main frame is connected to the gland, an arc-shaped elastic plate for limiting the anchor rod is arranged on the main frame, and the arc-shaped elastic plate is elastically supported by a reset mechanism composed of a pressing slider and a spring.

[0006] Preferably, the first clamping chuck includes an upper chuck, a lower chuck, a magnet square plate, a magnet and a fixing rod. The axial center positions of the upper chuck, the lower chuck and the magnet square plate in the first clamping chuck are sequentially superposed and fixedly connected through the fixing rod. The automatic locking mechanism is fixedly connected between adjacent arc-shaped card slots on the first clamping chuck, and the magnet is fixedly connected to the position of the arc-shaped card slot corresponding to the magnet square plate.

[0007] Preferably, the second clamping chuck includes a lower chuck, a magnet square plate, a magnet, a fixing rod, a proximity switch and a switch auxiliary chuck; the axial center positions of the lower chuck, the magnet square plate and the switch auxiliary chuck in the second clamping chuck are sequentially superposed and fixedly connected through the fixing rod. The automatic locking mechanism is fixedly connected between adjacent arc-shaped card slots on the second clamping chuck, and the proximity switch is arranged beside the switch auxiliary chuck.

[0008] Preferably, arc-shaped elastic plates are symmetrically arranged at both ends of the main frame, the gland is fixedly connected to the middle position of the main frame, two pressing sliders are symmetrically and slidably connected in the gland, the end positions of the pressing sliders press against the arc-shaped elastic plates, multiple groups of high-strength springs are arranged between the pressing sliders, and the main frame is fixedly connected to the first clamping chuck and the second clamping chuck. A guide groove for the pressing slider to slide is arranged in the gland.

[0009] Preferably, the connecting mechanism includes a pressing roller, an auxiliary fastening disc and a main connecting rod. The main connecting rod sequentially connects a rotary oil cylinder, the first clamping chuck, the second clamping chuck and the auxiliary fastening disc. A plurality of auxiliary limiting grooves for auxiliary fixing of the anchor rod are arranged on the side of the auxiliary fastening disc, and pressing rollers are arranged on both sides of the top of the auxiliary limiting groove.

[0010] Preferably, a chuck guard is arranged at the position of the main frame corresponding to the second clamping chuck, and the proximity switch is installed on the chuck guard.

[0011] Preferably, the magnet is arranged at the bottom of the arc-shaped card slot, and the main frame is connected to the drill.

[0012] The present invention has the following advantages compared with the prior art: 1. The present invention uses two states of clamping and pulling of the chuck part, so that the upper chuck and the lower chuck can better clamp the drill pipe with the automatic locking mechanism, improving the operation intensity of the device. The operator and the automatic drilling rig can store and retrieve the anchor rod more conveniently and quickly, saving time and improving work efficiency. The double-layer locking structure is used, which adds multiple guarantees while ensuring safety and reliability, and saves manpower. The overall structure is simple, reliable, easy to operate, and responds quickly, solving the problems of difficult storage and retrieval of drill pipes for automatic anchoring drills and the instability of drill pipes after storage, and improving work efficiency.

[0013] 2. Inside the clamping device of the present invention, multiple groups of strong springs act on the pressing slider, allowing the pressing slider to slide in the guide groove, realizing the mechanical fastening of the two sliders to the anchor rod using strong elastic springs. And through the characteristic change of the spring elasticity, the clamping force of the device is the smallest before and after the anchor rod enters the anchor rod bin, facilitating entry. When passing through the maximum outer tangent circle diameter of the anchor rod, the clamping force can reach up to 300 N at most, achieving the effect of locking the anchor rod to prevent it from falling off. At the same time, the clamping device has an arc-shaped elastic plate, which plays an auxiliary clamping force role for the clamping operation and detachment.

[0014] 3. The upper chuck and the lower chuck of the present invention realize two states of pulling and clamping of the chuck part through the action of the automatic locking mechanism, improving the clamping speed and ability of the device for the anchor rod, with higher safety performance, effectively improving work efficiency. The two clamping chucks clamping both sides of the anchor rod improve the clamping stability.

[0015] 4. Through the action of the high-strength spring, the automatic locking mechanism of the present invention can keep the pressing slider and the chuck in a semi-closed state of being pressed at all times. The arc-shaped elastic plate on the main frame and the spring in the automatic locking mechanism act on the pressing slider simultaneously, realizing the smooth sliding of the pressing slider during the moving process, making up for the disadvantages of using them separately and achieving an automatic boosting mechanism system. That is, when the object to be clamped enters and exits the clamping space, the object to be clamped will apply a tangential force to the top of the pressing slider, resulting in the friction force in the translation direction of the pressing slider increasing with the increase of the tangential force, which hinders the translation of the pressing slider. The existence of the arc-shaped elastic plate converts the tangential force into an axial force parallel to the pressing slider at the initial stage of the mechanism's force application, enabling the pressing slider to slide smoothly in the gland, greatly improving work efficiency and reducing the failure rate of the structure. Preventing the clamped item from falling off effectively guarantees the personal safety and property safety of maintenance personnel during operation.

[0016] 5. The present invention, in cooperation with proximity switches, fully meets the shortage positioning function of intelligent storage of anchor rods, providing a position basis for automatic replacement of anchor rods.

[0017] The following further elaborates on the present invention in conjunction with the accompanying drawings and embodiments. Description of the Drawings

[0018] Figure 1 It is a three-dimensional structure schematic diagram of the present invention.

[0019] Figure 2 It is a top view structure schematic diagram of the present invention.

[0020] Figure 3 It is a three-dimensional structure schematic diagram of the automatic locking mechanism in the present invention.

[0021] Figure 4 It is a front view sectional structure schematic diagram of the automatic locking mechanism in the present invention.

[0022] Figure 5 It is a top view sectional structure schematic diagram of the automatic locking mechanism in the present invention.

[0023] Figure 6 It is a three-dimensional structure schematic diagram of the first clamping chuck in the present invention.

[0024] Figure 7 It is a front view sectional structure schematic diagram of the first clamping chuck in the present invention.

[0025] Figure 8 It is a front view structure schematic diagram of the first clamping chuck in the present invention.

[0026] Figure 9 It is a three-dimensional structure schematic diagram of the second clamping chuck in the present invention.

[0027] Figure 10 It is a front view sectional structure schematic diagram of the second clamping chuck in the present invention.

[0028] Figure 11 It is a three-dimensional structure schematic diagram of the connecting mechanism in the present invention.

[0029] Figure 12 It is a side view structure schematic diagram of the connecting mechanism in the present invention.

[0030] Explanation of reference numerals: Detailed implementation manners

[0031] As Figures 1 to 12 shown, the present invention includes a main frame Ⅰ, a rotary oil cylinder Ⅱ, a first clamping chuck Ⅲ, an automatic locking mechanism 5, a second clamping chuck Ⅴ, and a connecting mechanism Ⅳ. The first clamping chuck Ⅲ is connected to the second clamping chuck Ⅴ through a main connecting rod 15. A fixed anchor rod 20 is clamped between the first clamping chuck Ⅲ and the second clamping chuck Ⅴ. The main frame Ⅰ is connected to the rotary oil cylinder Ⅱ and a chuck guard 19. The main connecting rod 15 is connected to the rotary oil cylinder Ⅱ. A plurality of automatic locking mechanisms 5 are provided on the first clamping chuck Ⅲ and the second clamping chuck Ⅴ; A plurality of arc-shaped clamping grooves 16 for cooperating to clamp the bolt 20 are equidistantly arranged on the circumferences of the first clamping chuck III and the second clamping chuck V; The automatic locking mechanism 5 includes a gland 7, a pressing slider 8, a main frame 9 and a spring 10. The main frame 9 is connected to the first clamping chuck III and the second clamping chuck V. The main frame 9 is connected to the gland 7. An arc-shaped elastic plate 17 for limiting the bolt 20 is arranged on the main frame 9. The arc-shaped elastic plate 17 is elastically supported by a reset mechanism composed of a pressing slider 8 and a spring 10.

[0032] In this embodiment, the first clamping chuck III includes an upper chuck 1, a lower chuck 2, a magnet square plate 3, a magnet 4 and a fixing rod 6. The axial centers of the upper chuck 1, the lower chuck 2 and the magnet square plate 3 in the first clamping chuck III are sequentially superposed and fixedly connected through the fixing rod 6. The automatic locking mechanism 5 is fixedly connected between adjacent arc-shaped clamping grooves 16 on the first clamping chuck III. Magnets 4 are fixedly connected to the positions of the arc-shaped clamping grooves 16 corresponding to the magnet square plate 3.

[0033] In this embodiment, the second clamping chuck V includes a lower chuck 2, a magnet square plate 3, a magnet 4, a fixing rod 6, a proximity switch 11 and a switch auxiliary chuck 12; the axial centers of the lower chuck 2, the magnet square plate 3 and the switch auxiliary chuck 12 in the second clamping chuck V are sequentially superposed and fixedly connected through the fixing rod 6. The automatic locking mechanism 5 is fixedly connected between adjacent arc-shaped clamping grooves 16 on the second clamping chuck V. A proximity switch 11 is arranged beside the switch auxiliary chuck 12.

[0034] In this embodiment, arc-shaped elastic plates 17 are symmetrically arranged at both ends of the main frame 9. The middle position of the main frame 9 is fixedly connected to the gland 7. Two pressing sliders 8 are symmetrically and slidably connected inside the gland 7. The end positions of the pressing sliders 8 press against the arc-shaped elastic plates 17. A plurality of groups of high-strength springs 10 are arranged between the pressing sliders 8. The main frame 9 is fixedly connected to the first clamping chuck III and the second clamping chuck V. A guide groove for the pressing slider 8 to slide is opened inside the gland 7.

[0035] In this embodiment, the connecting mechanism IV includes a pressing roller 13, an auxiliary fastening disc 14 and a main connecting rod 15. The main connecting rod 15 is sequentially connected to the rotary oil cylinder II, the first clamping chuck III, the second clamping chuck V and the auxiliary fastening disc 14. A plurality of auxiliary limiting grooves 18 for auxiliary fixing of the bolt 20 are opened on the side of the auxiliary fastening disc 14. Pressing rollers 13 are arranged on both sides of the top of the auxiliary limiting groove 18.

[0036] In this embodiment, a chuck guard is arranged on the main frame I at the position corresponding to the second clamping chuck V. The proximity switch 11 is installed on the chuck guard 19.

[0037] In this embodiment, the magnet 4 is arranged at the bottom of the arc-shaped clamping groove 16, and the main frame I is connected to the drill rig.

[0038] During use, when the main shaft of the swing cylinder II rotates, the precise positioning of the arc-shaped clamping groove 16 is achieved through the proximity switch 11 and the switch auxiliary chuck 12. The automatic locking mechanism 5 elastically clamps the anchor rod 20 by using the pressing slider 8 and the high-strength spring 10. Due to the characteristics of the spring 10 itself, the clamping requirements of the clamping objects such as the anchor rod 20 are met. During the process of being pressed open and clamped, the elastic force of the spring 10 gradually increases, and the arc-shaped elastic plate 17 is used to cooperate to meet the risk of preventing the clamped object from falling off. The risk of the anchor rod 20 falling off under high-intensity vibration is solved.

[0039] The above is only a preferred embodiment of the present invention and does not impose any limitation on the present invention. Any simple modification, change, and equivalent change made to the above embodiments according to the technical essence of the invention still fall within the protection scope of the technical solution of the present invention.

Claims

1. An automatic tightening bolt bin device for coal mines, characterized in that: The invention comprises a main frame (I), a rotary oil cylinder (II), a first clamping chuck (III), an automatic locking mechanism (5), a second clamping chuck (V) and a connecting mechanism (IV); the first clamping chuck (III) is connected to the second clamping chuck (V) via a main connecting rod (15); an anchor rod (20) is clamped and fixed between the first clamping chuck (III) and the second clamping chuck (V); the main frame (I) is connected to the rotary oil cylinder (II) and a chuck shield (19); the main connecting rod (15) is connected to the rotary oil cylinder (II); and a plurality of automatic locking mechanisms (5) are arranged on the first clamping chuck (III) and the second clamping chuck (V); A plurality of arc-shaped clamping grooves (16) for clamping the anchor rod (20) are equidistantly formed on the circumference of the first clamping chuck (III) and the second clamping chuck (V); The automatic locking mechanism (5) comprises a pressure cover (7), a clamping slider (8), a main frame (9) and a spring (10); the main frame (9) is connected to the first clamping chuck (III) and the second clamping chuck (V); the main frame (9) is connected to the pressure cover (7); an arc-shaped spring plate (17) for limiting the anchor rod (20) is provided on the main frame (9); the arc-shaped spring plate (17) is elastically supported by a reset mechanism formed by the clamping slider (8) and the spring (10).

2. The automatic tightening bolt bin device for coal mines according to claim 1 is characterized in that: The first clamping chuck (III) comprises an upper chuck (1), a lower chuck (2), a magnet square plate (3), a magnet (4) and a fixing rod (6); the axial positions of the upper chuck (1), the lower chuck (2) and the magnet square plate (3) in the first clamping chuck (III) are sequentially overlapped and fixedly connected via the fixing rod (6); the automatic locking mechanism (5) is fixedly connected between adjacent arc-shaped grooves (16) on the first clamping chuck (III); and the magnet (4) is fixedly connected to the position of the arc-shaped groove (16) corresponding to the magnet square plate (3).

3. The automatic tightening bolt bin device for coal mines according to claim 1 is characterized in that: The second clamping chuck (V) comprises a lower chuck (2), a magnet square plate (3), a magnet (4), a fixing rod (6), a proximity switch (11) and a switch auxiliary chuck (12); the axial positions of the lower chuck (2), the magnet square plate (3) and the switch auxiliary chuck (12) in the second clamping chuck (V) are sequentially overlapped and fixedly connected via the fixing rod (6); an automatic locking mechanism (5) is fixedly connected between adjacent arc-shaped grooves (16) on the second clamping chuck (V); and a proximity switch (11) is arranged on the side of the switch auxiliary chuck (12).

4. The automatic tightening bolt bin device for coal mines according to claim 1, characterized in that: Arc spring plates (17) are symmetrically arranged at both ends of the main frame (9); a pressure cover (7) is fixedly connected to the middle position of the main frame (9); two clamping slide blocks (8) are symmetrically slidably connected inside the pressure cover (7); the end positions of the clamping slide blocks (8) press the arc spring plates (17); a plurality of groups of springs (10) are arranged between the clamping slide blocks (8); and the main frame (9) is fixedly connected to the first clamping chuck (III) and the second clamping chuck (V).

5. The automatic tightening bolt bin device for coal mines according to claim 1, characterized in that: The connecting mechanism (IV) comprises a clamping roller (13), an auxiliary fastening plate (14) and a main connecting rod (15); the main connecting rod (15) is connected to the rotary cylinder (II), the first clamping chuck (III), the second clamping chuck (V) and the auxiliary fastening plate (14) in sequence; a plurality of auxiliary limiting grooves (18) for auxiliary fixing of the anchor rod (20) are provided on the side of the auxiliary fastening plate (14); and clamping rollers (13) are provided on both sides of the top of the auxiliary limiting grooves (18).

6. The automatic tightening bolt bin device for coal mines according to claim 3, characterized in that: The main frame (I) is provided with a chuck guard at a position corresponding to the second clamping chuck (V), and the proximity switch (11) is mounted on the chuck guard (19).

7. An automatic tightening bolt bin device for coal mines according to claim 2 or 3, characterized in that: The magnet (4) is arranged at the bottom of the arc-shaped slot (16), and the main frame (I) is connected to the drilling rig.

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