Automatic rod connection and disconnection device and rotary drill

Abstract

The invention discloses an automatic rod-loading and unloading device and a rotary drill, the automatic rod-loading and unloading device comprises: a drill frame, which is movable and lifted and equipped with a rotary power head; a drill rod magazine, which is movably installed on the drill frame; a clamping and unloading caliper, which comprises a large arm, a unloading arm and a clamping arm, the unloading arm is installed on the large arm, and the clamping arm is installed on the unloading arm; the unloading arm and the clamping arm cooperate to clamp the drill rod, the large arm is installed with a second driving device, the second driving device is used to drive the unloading arm to move, so as to drive the clamped drill rod to rotate; a lower caliper, which comprises a guide base, a sliding plug plate and a driving oil cylinder, the guide base is provided with a clamping hole, the sliding plug plate is slidably installed on the guide base, the sliding plug plate cooperates with the guide base to clamp the drill rod inserted in the clamping hole, and the driving oil cylinder is used to drive the sliding plug plate to slide. The automatic rod-loading and unloading device according to the embodiment of the present invention can realize the automatic loading and unloading of the drill rod, reduce manual work, reduce operation cost, and improve operation efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of mining machinery, and in particular to an automatic rod connecting and disconnecting device and a rotary drill. Background Art

[0002] In order to meet the drilling depth requirements of rotary drills, rotary drills mostly use a multi-rod drilling operation mode; multi-rod drilling is to set up a drill rod warehouse to store 2 to 5 drill rods, and connect the drill rods step by step during the drilling process to drill to the predetermined depth. Therefore, the drilling process involves the rod connection and disconnection operation of the drill rod. At present, the rod connection and disconnection operation of the drill rod is mainly completed by the operator operating the rod connection and disconnection equipment. The rod connection and disconnection efficiency and the drill rod connection accuracy mainly depend on the operator's experience, and improper operation is prone to damage to the drill rod thread. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides an automatic rod connection and disconnection device, which can realize automatic connection and disconnection of drill rods, reduce manual work, reduce operation costs, and improve operation efficiency.

[0004] The present invention also provides a rotary drill having the automatic rod connecting and disconnecting device.

[0005] The automatic rod-connecting and unconnecting device according to the first embodiment of the present invention comprises:

[0006] The drilling rig is movable and is equipped with a rotary power head, which is used to connect and unconnect the drill rod;

[0007] A drill rod magazine is installed on the drill frame and can rotate relative to the drill frame; the drill rod magazine is used to deliver drill rods to the rotary power head and receive drill rods disconnected from the rotary power head;

[0008] A clamping and shackle caliper is installed on the drill frame and is used to clamp the drill rod and drive the drill rod to rotate; the clamping and shackle caliper includes a large arm, a shackle arm and a clamping arm, the shackle arm is installed on the large arm, and the clamping arm is installed on the shackle arm; the shackle arm cooperates with the clamping arm to clamp the drill rod, and the large arm is installed with a second driving device, and the second driving device is used to drive the shackle arm to move, so as to drive the clamped drill rod to rotate around its own axis; the clamping and shackle caliper is used for shackle of the drill rod, and the torque of the clamping and shackle caliper to drive the drill rod to rotate is greater than the torque of the rotary power head to drive the drill rod to rotate;

[0009] A lower clamp is installed on the drill frame; the lower clamp includes a guide base, a sliding plug plate and a driving cylinder, the guide base is provided with a clamping hole for the drill rod to pass through, the sliding plug plate is slidably installed on the guide base, the sliding plug plate cooperates with the guide base to clamp the drill rod passing through the clamping hole, and the driving cylinder is used to drive the sliding plug plate to slide;

[0010] The automatic rod-connecting and unloading device has a rod-connecting mode and a rod-unloading mode. When the automatic rod-connecting and unloading device operates in the rod-connecting mode: the rotary power head rises, the drill rod magazine conveys the upper drill rod to the bottom of the rotary power head, the clamping and unloading caliper is used to hold the upper drill rod, and the lower caliper is used to clamp the lower drill rod partially inserted into the ore body to center the upper drill rod and the lower drill rod, and the rotary power head drives the upper drill rod to rotate and descend to complete the connection of the upper drill rod and the lower drill rod;

[0011] When the automatic rod connecting and unloading device operates in the rod unloading mode: the rotary power head rises, the clamping part of the lower caliper is inserted into the lower drill rod in the ore body, the clamping and unloading caliper clamps the upper drill rod and drives the upper drill rod to rotate to achieve the disengagement of the upper drill rod and the lower drill rod, and then the rotary power head drives the upper drill rod to rotate and rise to achieve the disengagement of the upper drill rod and the lower drill rod.

[0012] The automatic rod-connecting and unconnecting device according to the embodiment of the present invention has at least the following beneficial effects:

[0013] By setting up a drill rod warehouse that can rotate relative to the drill rig, the rotary power head cooperates with the clamping and shackle caliper and the lower caliper to realize automatic connection and disconnection of the drill rod, thereby improving the accuracy and efficiency of connecting and disconnecting the rod, reducing manual work and improving operation safety; the clamping and shackle caliper can clamp the drill rod and drive the drill rod to rotate, so that the drill rod can be straightened in the rod connection mode to accurately align the threads of the two drill rods; in the rod disconnection mode, the clamping and shackle caliper can complete the action of shackle the drill rod, reducing the wear of the drill rod thread caused by the shackle of the rotary power head.

[0014] According to some embodiments of the present invention, the upper arm is provided with a guide groove, the shackle arm is provided with a sliding pin, the sliding pin is passed through the guide groove, and the second driving device is used for driving the sliding pin to slide along the guide groove.

[0015] According to some embodiments of the present invention, two guide grooves are provided, two slide pins are provided corresponding to the guide grooves, and the two slide pins are respectively inserted into the two guide grooves;

[0016] The two sliding pins are both mounted on a bottom plate, and the bottom plate is detachably connected to the shackle arm.

[0017] According to some embodiments of the present invention, the shackle arm is equipped with a tooth plate and a third driving device, the clamping arm is hinged to the shackle arm and connected to the third driving device, and the third driving device is used to drive the clamping arm to rotate around the hinge with the shackle arm;

[0018] The shackle arm is provided with a clamping groove, and the tooth plate and the third driving device are respectively installed on the groove walls on both sides opposite to the clamping groove; the second driving device drives the shackle arm to move, which can drive the drill rod clamped in the clamping groove to rotate around its own axis.

[0019] According to some embodiments of the present invention, the upper arm comprises two first clamping plates arranged opposite to each other, and the shackle arm is installed between the two first clamping plates;

[0020] And / or, the shackle arm comprises two second clamping plates arranged opposite to each other, and the clamping arm is installed between the two second clamping plates.

[0021] According to some embodiments of the present invention, the clamping shackle caliper also includes a bracket, which is installed on the drill rig, and the upper arm is hinged to the bracket; the bracket is installed with a first driving device, and the two ends of the first driving device are respectively connected to the bracket and the upper arm, and the first driving device is used to drive the upper arm to rotate around the hinge with the bracket.

[0022] According to some embodiments of the present invention, the drill rod magazine and the clamping and shackle caliper are respectively installed on opposite sides of the drill rack, and the lower caliper is installed below the clamping and shackle caliper.

[0023] According to some embodiments of the present invention, the diameter of the clamping hole is larger than the diameter of the drill rod, and the sliding plug plate is provided with a slot for the drill rod to be embedded.

[0024] According to some embodiments of the present invention, the drill rod storage includes a base frame, a swing arm assembly, a rod storage device and a swing cylinder, the base frame is installed on the drill frame, the swing arm assembly is hinged to the base frame, the rod storage device is installed on the swing arm assembly, and the rod storage device is used to store drill rods; the swing cylinder is used to drive the swing arm assembly to rotate around the hinge with the base frame.

[0025] The rotary drill according to the second embodiment of the present invention includes the above-mentioned automatic rod connecting and disconnecting device. Since the rotary drill includes the above-mentioned automatic rod connecting and disconnecting device, it at least has all the beneficial effects of the automatic rod connecting and disconnecting device.

[0026] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0028] Figure 1 It is a schematic structural diagram of an embodiment of the first aspect of the present invention;

[0029] Figure 2 for Figure 1 The enlarged view of point A in the middle;

[0030] Figure 3 for Figure 2 Schematic diagram of the structure of the middle clamping shackle caliper;

[0031] Figure 4 for Figure 2 A cross-sectional view of the middle-gripping shackle caliper;

[0032] Figure 5 It is a schematic diagram of the assembly of the shackle arm and the clamping arm;

[0033] Figure 6 for Figure 2 Schematic diagram of the structure of the middle and lower calipers;

[0034] Figure 7 for Figure 1 Schematic diagram of the structure of the drill rod library.

[0035] Figure Number:

[0036] Drilling frame 100, rotary power head 110;

[0037] Drill rod library 200, base frame 210, swing arm assembly 220, rod storage 230, swing cylinder 240;

[0038] The clamping shackle caliper 300, the bracket 310, the first driving device 311, the large arm 320, the second driving device 321, the guide groove 322, the first clamping plate 323, the shackle arm 330, the third driving device 331, the bottom plate 332, the sliding pin 3321, the clamping groove 333, the centering contact surface 3331, the second clamping plate 334, the tooth plate 335, and the clamping arm 340;

[0039] The lower caliper 400 , the guide base 410 , the clamping hole 411 , the sliding plug plate 420 , the clamping slot 421 , and the driving cylinder 430 . DETAILED DESCRIPTION

[0040] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0041] In the description of the present invention, it should be understood that descriptions involving orientation, such as orientation or positional relationship indicated as up, down, etc., are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0042] In the description of the present invention, "a plurality" means more than two. If there is a description of "first" or "second", it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0043] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0044] Reference Figures 1 to 7 The automatic rod-loading and unloading device of the first embodiment of the present invention comprises a drill frame 100, a drill rod magazine 200, a clamping and unloading caliper 300 and a lower caliper 400. The drill frame 100 is movable and lifted and equipped with a rotary power head 110, which is used to connect the drill rod and drive the drill rod to perform drilling operations; the drill rod magazine 200 is installed on the drill frame 100 and can rotate relative to the drill frame 100, and the drill rod magazine 200 is used to store the drill rod, so that the drill rod can be provided to the rotary power head 110 or the drill rod removed from the rotary power head 110 can be received. The clamping and unloading caliper 300 is installed on the drill frame 100, and is used to clamp the drill rod and drive the drill rod to rotate so as to unload the drill rod; the lower caliper 400 is installed on the drill frame 100, and is used to clamp the drill rod.

[0045] In the embodiments of the present invention, referring to Figure 2As shown, the drill rod magazine 200 and the clamping and shackle caliper 300 are respectively installed on opposite sides of the drill rig 100, and the lower caliper 400 is installed below the clamping and shackle caliper 300. The drill rod magazine 200 and the clamping and shackle caliper 300 are respectively arranged on opposite sides of the drill rig 100, which can make full use of the space. The lower caliper 400 is arranged below the clamping and shackle caliper 300 because there is a difference in the objects of the two. For ease of understanding, they are defined as upper drill rods and lower drill rods in this embodiment. The automatic rod receiving and unloading device of this embodiment has a rod receiving mode and a rod unloading mode. When the automatic rod receiving and unloading device is in the rod receiving mode, the clamping and shackle caliper 300 is mainly used to clamp the upper drill rod to align the upper drill rod with the lower drill rod, and the lower caliper 400 is used to clamp the upper drill rod. Used to clamp the lower drill rod; because the drill rod is relatively long, for example, generally more than 8 meters, during the drill rod connection process, there is a large offset between the central axes of the upper drill rod and the lower drill rod, and the problem of inability to accurately position the two drill rods, which leads to the problem that the quality of the connection cannot be stably controlled, and in severe cases, the connection operation cannot be completed. The lower drill rod is fixed by the lower caliper 400, and then the clamping shackle caliper 300 is used to straighten the lower end of the upper drill rod, thereby facilitating the alignment of the upper drill rod and the lower drill rod, and then the connection of the drill rods is completed by rotating and lifting the rotary power head 110.

[0046] When the automatic rod-connecting and unloading device is in the rod-unloading mode, the clamping and unloading caliper 300 can be used to unload the drill rod, and the lower caliper 400 is also used to clamp the lower drill rod. When the drill rod works in a long-term vibration and impact environment, the tightening torque at the threaded joint of the drill rod may exceed the initial tightening torque, resulting in the unloading torque required for the drill rod far exceeding the maximum unloading torque that the rotary power head 110 can apply; in this case, the unloading action of the drill rod cannot be completed by relying on the reverse rotation of the rotary power head 110. At present, the drill rod is unloaded by manually loosening the thread with the help of a special tongs or wrench, but this process is very easy to damage the drill rod thread, and the manual labor intensity is high during the operation, and the machine needs to be stopped for operation, which seriously affects the operation efficiency; the clamping and unloading caliper 300 of this embodiment can drive the drill rod to rotate and provide a greater torque than the rotary power head 110 to realize the unloading between the drill rods, thereby reducing manual work, improving operation efficiency, and reducing the wear of the drill rod thread.

[0047] In the embodiment of the present invention, the drill rod magazine 200 includes a base frame 210, a swing arm assembly 220, a rod storage 230 and a swing cylinder 240. The base frame 210 is installed on the drill frame 100, the swing arm assembly 220 is hinged to the base frame 210, and the rod storage 230 is installed on the swing arm assembly 220. The rod storage 230 is used to store drill rods; the swing cylinder 240 is used to drive the swing arm assembly 220 to rotate around the hinge with the base frame 210. For details, refer to Figure 7As shown, the rod storage device 230 can store multiple drill rods, and the multiple drill rods are evenly spaced around the circumference. A rotating cylinder is installed at the bottom of the rod storage device 230, and the rotating cylinder is used to drive the rod storage device 230 to rotate around its own axis; the swing cylinder 240 is used to drive the swing arm assembly 220 to move relative to the drill rig 100. When loading and unloading drill rods, the swing cylinder 240 drives the swing arm assembly 220 to move toward the drill rig 100, thereby sending the drill rods in the rod storage device 230 to the bottom of the rotary power head 110 or loading the drill rods under the rotary power head 110 into the rod storage device 230; when the rotary power head 110 drives the drill rods to perform drilling operations, the swing cylinder 240 drives the swing arm assembly 220 to move away from the drill rig 100 to avoid obstruction to the vertical lifting of the rotary power head 110.

[0048] In the embodiment of the present invention, the lower caliper 400 includes a guide base 410, a sliding plug plate 420 and a driving cylinder 430. The guide base 410 is provided with a clamping hole 411 for the drill rod to pass through. The sliding plug plate 420 is slidably mounted on the guide base 410. The sliding plug plate 420 cooperates with the guide base 410 to clamp the drill rod passing through the clamping hole 411. The driving cylinder 430 is used to drive the sliding plug plate 420 to slide. For details, refer to Figure 6 As shown, the guide base 410 is installed on the drill frame 100, the fixed end of the driving cylinder 430 is connected to the drill frame 100, and the movable end is connected to the sliding plug plate 420; sliding grooves are provided on the opposite sides of the guide base 410, and the sliding plug plate 420 is slidably installed in the two sliding grooves on both sides of the width, the first end of the sliding plug plate 420 in the length direction is connected to the driving cylinder 430, and the second end of the sliding plug plate 420 in the length direction is provided with a groove 421 for the drill rod to be embedded; the outer peripheral wall of the drill rod is provided with a groove corresponding to the groove 421. When the drill rod is embedded in the groove 421, the drill rod will no longer be able to rotate around its own axis, thereby facilitating the connection or separation of the two drill rods. The diameter of the clamping hole 411 is larger than the diameter of the drill rod, so that the drill rod can pass through the clamping hole 411; when the drill rod is inserted into the slot 421 and is pushed by the sliding plug plate 420 to press against the side wall of the clamping hole 411, the drill rod is directly below the rotary power head and cannot rotate around its own axis.

[0049] In the embodiments of the present invention, referring to Figure 3As shown, the clamping shackle caliper 300 includes a bracket 310, a large arm 320, a shackle arm 330 and a clamping arm 340. The large arm 320 is hinged to the bracket 310, the clamping arm 340 is hinged to the shackle arm 330, and the shackle arm 330 is installed on the large arm 320. The bracket 310 is installed with a first driving device 311, and the two ends of the first driving device 311 are respectively connected to the large arm 320 and the bracket 310. The first driving device 311 is used to drive the large arm 320 to rotate around the hinge with the bracket 310. Specifically, the rotary power head 110 is used to connect with the drill rod and drive the drill rod to drill. When the rotary power head 110 cannot complete the shackle with the drill rod, the clamping shackle caliper 300 can be used to help the rotary power head 110 to shackle the drill rod. The support 310 is installed on the drilling rig 100, and the boom 320 has an initial position and an operating position. When the boom 320 is in the initial position, the boom 320 will not affect the lifting and lowering of the rotary power head 110. When the boom 320 is in the working position, the clamping shackle caliper 300 is used to shackle the drill rod, but it will affect the lifting and lowering of the rotary power head 110. Therefore, a first driving device 311 is provided to drive the boom 320 to rotate around the hinge with the support 310, thereby driving the boom 320 to switch between the initial position and the working position. Figure 1 As shown, the first driving device 311 is preferably a telescopic structure, such as a telescopic air cylinder or a telescopic oil cylinder, etc., which has mature technology and is suitable for harsh mining environments.

[0050] In the embodiment of the present invention, the upper arm 320 is provided with a guide groove 322, and the upper arm 320 is installed with a second driving device 321; the shackle arm 330 is installed on the upper arm 320 and connected with the second driving device 321, and the shackle arm 330 is installed with a sliding pin 3321, and the sliding pin 3321 is penetrated in the guide groove 322, and the second driving device 321 is used to drive the sliding pin 3321 to slide along the guide groove 322; the shackle arm 330 is installed with a tooth plate 335 and a third driving device 331; The clamping arm 340 is hinged to the shackle arm 330 and connected to the third driving device 331. The third driving device 331 is used to drive the clamping arm 340 to rotate around the hinge with the shackle arm 330. The shackle arm 330 is provided with a clamping groove 333. The tooth plate 335 and the third driving device 331 are respectively installed on the two opposite sides of the groove wall of the clamping groove 333. The second driving device 321 drives the shackle arm 330 to move, which can drive the drill rod clamped in the clamping groove 333 to rotate around its own axis. For details, refer to Figure 4 , Figure 5 As shown, the second drive device 321 and the third drive device 331 are preferably telescopic structures, such as telescopic cylinders or telescopic oil cylinders, etc., which are mature in technology and suitable for harsh mining environments, and can also effectively reduce production costs. Among them, the second drive device 321 is the main source of power for breaking out the drill rod, so it is preferred that the second drive device 321 uses a telescopic oil cylinder, so that it can output greater torque.

[0051] The clamping and shackle caliper 300 of the embodiment of the present invention drives the clamping arm 340 to clamp the drill rod through the third driving device 331, and then drives the sliding pin 3321 of the shackle arm 330 to slide along the guide groove 322 through the second driving device 321, thereby driving the drill rod clamped in the clamping groove 333 to rotate around its own axis. Increasing the power of the second driving device 321 can realize the shackle of the drill rod, reduce manual work, and improve work efficiency.

[0052] In the embodiments of the present invention, referring to Figure 3 As shown, the arm 320 includes two first clamping plates 323 arranged opposite to each other, and the shackle arm 330 is installed between the two first clamping plates 323; Figure 5 As shown, the shackle arm 330 includes two second clamping plates 334 arranged opposite to each other, and the clamping arm 340 is installed between the two second clamping plates 334. Further, the first drive device 311 is installed on the outer surface of the upper arm 320, the second drive device 321 is installed between the two first clamping plates 323, and the third drive device 331 is installed between the two second clamping plates 334. The advantage of such a design is that it can effectively avoid interference between the first drive device 311, the second drive device 321, and the third drive device 331, and it is also more convenient to arrange the positions of the first drive device 311, the second drive device 321, and the third drive device 331; in addition, the two second clamping plates 334 can also protect and limit the clamping arm 340 and the third drive device 331, and the two first clamping plates 323 can protect and limit the shackle arm 330 and the second drive device 321.

[0053] In the embodiment of the present invention, two guide grooves 322 are provided, and two slide pins 3321 are provided corresponding to the guide grooves 322, and the two slide pins 3321 are respectively inserted into the two guide grooves 322. Figure 3 , Figure 5 As shown, two guide grooves 322 and two sliding pins 3321 are provided, which can play the role of mutual backup and force dispersion, thereby reducing the failure rate and extending the service life of the equipment.

[0054] It is conceivable that the two guide grooves 322 are concentrically arranged.

[0055] In an embodiment of the present invention, the shackle arm 330 is also equipped with a cover plate, which is arranged on the guide groove 322 to protect the sliding pin 3321 and prevent the sliding pin 3321 from being affected by impurities such as gravel when sliding along the guide groove 322.

[0056] In the embodiments of the present invention, referring to Figure 5As shown, the two sliding pins 3321 are both mounted on the bottom plate 332, and the bottom plate 332 is detachably connected to the shackle arm 330, for example, connected by fasteners such as bolts. Since the two sliding pins 3321 act together, the wear degree of the two sliding pins 3321 is similar under long-term use. Therefore, when one sliding pin 3321 is broken or damaged, it is preferred to replace the two sliding pins 3321 at the same time to ensure that the two sliding pins 3321 can still act at the same time. In this embodiment, the two sliding pins 3321 are both mounted on the bottom plate 332, and the bottom plate 332 is detachably connected to the shackle arm 330. Although the two sliding pins 3321 can only be replaced at the same time when one of the sliding pins 3321 fails, it ensures that the two sliding pins 3321 can always act at the same time, thereby reducing the failure rate of the equipment and extending the service life of the equipment.

[0057] It is conceivable that, for different usage scenarios, the two sliding pins 3321 may be connected to the shackle arm 330 separately.

[0058] In the embodiment of the present invention, the groove wall of the clamping groove 333 includes a centering contact surface 3331, and the centering contact surface 3331 is an arc surface, and the centering contact surface 3331 matches the diameter of the drill rod. Figure 2 , Figure 3 As shown, the centering contact surface 3331 is located between the tooth plate 335 and the short arm of the clamping arm 340. When clamping the drill pipe, the centering contact surface 3331, the tooth plate 335, and the clamping arm 340 are all in contact with the outer surface of the drill pipe; the centering contact surface 3331 is designed according to the position of the drill pipe axis, which can ensure that when the drill pipe is clamped in cooperation with the tooth plate 335 and the clamping arm 340, the load applied to the drill pipe will not generate an external force on the drill pipe, so that the drill pipe will not bend and deform; in addition, the contact angle between the clamping arm 340 and the drill pipe contact surface is specially designed, and it will not be separated from the drill pipe during the clamping process of the clamping arm 340. Furthermore, the shape of the centering contact surface 3331 and the contact surface of the clamping arm 340 can accommodate changes in the diameter of the drill pipe within a certain range, and the clamping effect can still be guaranteed when the diameter of the drill pipe decreases due to wear.

[0059] In the embodiment of the present invention, the middle part of the clamping arm 340 is hinged to the shackle arm 330, the first end of the clamping arm 340 is connected to the third driving device 331, and the second end of the clamping arm 340 is provided with a sawtooth structure. Figure 4 , Figure 5As shown, the clamping arm 340 is in a "7" shape, the bending part of the clamping arm 340 is hinged with the shackle arm 330, and the bending part of the clamping arm 340 is used as the boundary, and the two ends are respectively a long arm and a short arm. The long arm of the clamping arm 340 is connected to the third driving device 331, and the short arm of the clamping arm 340 is used to clamp the drill rod. In this way, the clamping force of the clamping arm 340 on the drill rod can be increased by using the lever principle, thereby making it easier to rotate the drill rod. The sawtooth structure is to increase the equivalent friction coefficient between the clamping arm 340 and the drill rod, and the specific design of the sawtooth structure can be designed according to actual conditions.

[0060] In the embodiment of the present invention, the tooth plate 335 is detachably connected to the shackle arm 330, and the tooth plate 335 is provided with a sawtooth structure. Figure 4 , Figure 5 As shown, the tooth plate 335 is connected to the shackle arm 330 by fasteners such as bolts, and the sawtooth structure of the tooth plate 335 can be the same as or different from the sawtooth structure of the clamping arm 340. The tooth plate 335 is detachably connected to the shackle arm 330, which is convenient for replacing the tooth plate 335 separately, thereby reducing the maintenance cost of the equipment.

[0061] The rotary drill of the second embodiment of the present invention includes the above-mentioned automatic rod connecting and disconnecting device; since the rotary drill includes the above-mentioned automatic rod connecting and disconnecting device, it at least has all the beneficial effects of the automatic rod connecting and disconnecting device, which will not be elaborated here.

[0062] 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.

[0063] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. An automatic rod loading and unloading device, characterized in that: include: The drilling rig is movable and is equipped with a rotary power head, which is used to connect and unconnect the drill rod; A drill rod magazine is installed on the drill frame and can rotate relative to the drill frame; the drill rod magazine is used to deliver drill rods to the rotary power head and receive drill rods disconnected from the rotary power head; A clamping shackle caliper is installed on the drill frame and is used to clamp the drill rod and drive the drill rod to rotate; the clamping shackle caliper comprises a bracket, a large arm, a shackle arm and a clamping arm, the bracket is installed on the drill frame, and the large arm is hinged to the bracket; the bracket is installed with a first driving device, and the two ends of the first driving device are respectively connected to the bracket and the large arm, and the first driving device is used to drive the large arm to rotate around the hinge with the bracket; the shackle arm is installed on the large arm, and the clamping arm is installed on the shackle arm; the shackle arm cooperates with the clamping arm to clamp the drill rod, The big arm is equipped with a second driving device; the clamping shackle caliper is used for shackle of the drill rod, and the torque of the clamping shackle caliper driving the drill rod to rotate is greater than the torque of the rotary power head driving the drill rod to rotate; the shackle arm is equipped with a tooth plate and a third driving device, the clamping arm is hinged with the shackle arm and connected with the third driving device, and the third driving device is used to drive the clamping arm to rotate around the hinge with the shackle arm; the shackle arm is provided with a clamping groove, and the second driving device drives the shackle arm to move, which can drive the drill rod clamped in the clamping groove to rotate around its own axis; A lower clamp is installed on the drill frame; the lower clamp includes a guide base, a sliding plug plate and a driving cylinder, the guide base is provided with a clamping hole for the drill rod to pass through, the sliding plug plate is slidably installed on the guide base, the sliding plug plate cooperates with the guide base to clamp the drill rod passing through the clamping hole, and the driving cylinder is used to drive the sliding plug plate to slide; Wherein, the drill rod magazine and the clamping and shackle caliper are respectively installed on two opposite sides of the drill frame, and the lower caliper is installed below the clamping and shackle caliper; The automatic rod-connecting and unloading device has a rod-connecting mode and a rod-unloading mode. When the automatic rod-connecting and unloading device operates in the rod-connecting mode: the rotary power head rises, the drill rod magazine conveys the upper drill rod to the bottom of the rotary power head, the clamping and unloading caliper is used to hold the upper drill rod, and the lower caliper is used to clamp the lower drill rod partially inserted into the ore body to center the upper drill rod and the lower drill rod, and the rotary power head drives the upper drill rod to rotate and descend to complete the connection of the upper drill rod and the lower drill rod; When the automatic rod connecting and unloading device operates in the rod unloading mode: the rotary power head rises, the clamping part of the lower caliper is inserted into the lower drill rod in the ore body, the clamping and unloading caliper clamps the upper drill rod and drives the upper drill rod to rotate to achieve the disengagement of the upper drill rod and the lower drill rod, and then the rotary power head drives the upper drill rod to rotate and rise to achieve the disengagement of the upper drill rod and the lower drill rod.

2. The automatic rod-loading and unloading device according to claim 1 is characterized in that: The large arm is provided with a guide groove, the shackle arm is provided with a sliding pin, the sliding pin is passed through the guide groove, and the second driving device is used for driving the sliding pin to slide along the guide groove.

3. The automatic rod-connecting and unconnecting device according to claim 2 is characterized in that: There are two guide grooves, two slide pins are provided corresponding to the guide grooves, and the two slide pins are respectively inserted into the two guide grooves; The two sliding pins are both mounted on a bottom plate, and the bottom plate is detachably connected to the shackle arm.

4. The automatic rod-connecting and unconnecting device according to claim 1, characterized in that: The upper arm comprises two first clamping plates arranged opposite to each other, and the shackle arm is installed between the two first clamping plates; And / or, the shackle arm comprises two second clamping plates arranged opposite to each other, and the clamping arm is installed between the two second clamping plates.

5. The automatic rod-connecting and unconnecting device according to claim 1, characterized in that: The diameter of the clamping hole is larger than the diameter of the drill rod, and the sliding plug plate is provided with a slot for the drill rod to be embedded.

6. The automatic rod-connecting and unconnecting device according to claim 1, characterized in that: The drill rod storage includes a base frame, a swing arm assembly, a rod storage device and a swing cylinder. The base frame is installed on the drill frame, the swing arm assembly is hinged to the base frame, the rod storage device is installed on the swing arm assembly, and the rod storage device is used to store drill rods; the swing cylinder is used to drive the swing arm assembly to rotate around the hinge with the base frame.

7. A rotary drill, characterized in that: The invention comprises the automatic rod connecting and disconnecting device as described in any one of claims 1 to 6.

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