A drilling apparatus for use in coal mining

Abstract

The application discloses a kind of drilling equipment for coal mine tunneling, it is related to drilling device technical field.The application includes: mobile carrier, mobile carrier is rotatably installed with mobile seat, mobile seat is vertically rotatably installed with mounting bracket, mounting bracket is horizontally slidably installed with drive seat, drive seat is rotatably installed with centering fixture;Propulsion mechanism, including storage assembly and push assembly installed on the mounting bracket, storage assembly is used to store multiple drill pipes, the storage assembly has a staging area, staging area can accommodate a drill pipe, by the push assembly to be transported to the centering fixture with the drill pipe in staging area, when there is no drill pipe in staging area.The application compared with prior art, through propulsion mechanism cooperation centering fixture can quickly butt joint extension drill pipe, not only reduce the labor intensity of staff, and when interfacing drill bit is more convenient and fast, effectively reduce the security risk.

Description

Technical Field

[0001] This invention relates to the field of drilling equipment technology, and more specifically to a drilling equipment for coal mine tunneling. Background Technology

[0002] In coal mine tunneling operations, drilling equipment is one of the core pieces of equipment, and its performance directly affects tunneling efficiency and safety. Existing drilling equipment still has many shortcomings in terms of drill rod replacement, automation, and structural design. Currently, coal mine tunneling drilling equipment generally employs a manual method of loading, unloading, and connecting drill rods one by one. After the drilling process is completed, the machine must be stopped and the drill rods manually extended. This method is not only labor-intensive and involves long downtime, but also results in additional energy consumption due to frequent start-ups and shutdowns of the drive system, which is not conducive to energy conservation and emission reduction. Furthermore, manual operation poses significant safety hazards in the high-humidity, high-dust underground environment, making it difficult to meet the demands of efficient, safe, and energy-saving modern tunneling.

[0003] Therefore, this invention proposes a drilling equipment for coal mine tunneling. Summary of the Invention

[0004] The purpose of this invention is to provide a drilling device for coal mine tunneling in order to solve the problems mentioned above in the background art.

[0005] To achieve the above objectives, the present invention specifically adopts the following technical solution:

[0006] A drilling device for coal mine tunneling includes:

[0007] A mobile carrier, on which a mobile seat is rotatably mounted, on which a mounting frame is vertically rotatably mounted, on which a drive seat is horizontally slidably mounted, and on which a centering clamp is rotatably mounted;

[0008] The propulsion mechanism includes a storage component and a push component mounted on the mounting frame. The storage component is used to store multiple drill pipes and has a temporary storage area that can accommodate one drill pipe. The push component is used to transport the drill pipe located in the temporary storage area to the centering fixture. When there is no drill pipe in the temporary storage area, the storage component can automatically transport a drill pipe into the temporary storage area.

[0009] An elastic fixing component is mounted on the mounting bracket, and a centering clamp is located between the pushing component and the elastic fixing component, which is used to clamp the drill pipe.

[0010] Furthermore, the pushing component includes a movable plate that is vertically slidably mounted on the mounting frame. The top of the movable plate has a receiving groove, and a pushing frame plate is horizontally slidably mounted on one side of the movable plate. A linkage that acts on the drive seat is mounted on the mounting frame. When the drive seat moves to its maximum limit position during drilling, the linkage drives the movable plate to move upward, so that the drill rod located in the receiving groove and the centering clamp are on the same axis.

[0011] Furthermore, the linkage includes a drive plate horizontally slidably mounted on the mounting bracket, a pivot rod rotatably mounted on the mounting bracket, a linkage rod hinged between one end of the pivot rod and the drive plate, a movable slot horizontally opened on the movable plate, and a shaft movably tangentially within the movable slot mounted on the other end of the pivot rod. A trigger and a reset are mounted on the mounting bracket. When the drive seat moves towards the maximum limit position in the direction close to the elastic fixing component, it passes through the reset and trigger in sequence. After the drive seat moves towards the maximum limit position in the direction close to the elastic fixing component, the trigger causes the drive plate to move in one direction, and the reset causes the drive plate to move and reset.

[0012] Furthermore, the reset component includes a mounting cylinder mounted on the mounting bracket, a first wedge plate that slides elastically inside the mounting cylinder, the first wedge plate being connected to a connecting frame rod with one end located externally, a second wedge plate being horizontally and elastically rotatably mounted on the free end of the connecting frame rod, an elastic telescopic rod being installed between the mounting bracket and the drive plate, an execution plate being elastically and vertically slidably mounted on the drive seat for contacting the second wedge plate, and a wedge groove for inserting the first wedge plate being formed on the drive plate.

[0013] Furthermore, the trigger includes a first rack mounted on the bottom of the actuator plate and a second rack mounted on the drive plate. A drive gear is rotatably mounted on the mounting bracket. The second rack is always engaged with the drive gear. When the first rack passes the drive gear, it engages with the drive gear. A avoidance element is mounted on the mounting bracket. When the actuator plate moves from the maximum limit position near the elastic fixing component to another limit position, the actuator plate contacts the avoidance element first, so that the first rack moves upward to avoid the drive gear.

[0014] Furthermore, the avoidance component includes a third wedge plate that is elastically and horizontally slidably mounted on the mounting bracket. A protrusion is mounted on one side of the actuating plate. One end of the protrusion has a forcing inclined surface for contacting the plane of the third wedge plate. The inclined surface of the third wedge plate is used to contact the other end of the protrusion. The protrusion is longer than the first rack.

[0015] Furthermore, a return spring is installed between the propulsion frame plate and the moving plate, a transmission plate is vertically slidably installed inside the moving plate, a hinge rod is installed between the transmission plate and the propulsion frame plate, a trigger plate located outside the moving plate is constructed at one end of the transmission plate, and a baffle for contacting the trigger plate is installed on the mounting frame. When the moving plate moves upward, the trigger plate contacts the bottom of the baffle.

[0016] Furthermore, the storage component includes a storage box mounted on the mounting frame, a storage slot is obliquely opened inside the storage box, a feed slot is opened above the highest point of the storage slot, multiple drill rods are arranged in a linear array inside the storage slot, the lowest point of the storage slot is an opening, the opening end is a temporary storage area, under normal conditions, the receiving slot is located at the opening end, when the moving plate moves, one side of the moving plate blocks the opening end of the receiving slot.

[0017] Furthermore, the elastic fixing component includes a connecting seat mounted on the mounting bracket. The connecting seat has a through slot for the drill rod to pass through. Support plates are symmetrically slidably mounted on the connecting seat. A centering block is elastically slidably fitted on one end of the support plate. The two centering blocks have two connected inclined surfaces symmetrically constructed on opposite sides. A driving component for driving the two support plates to move closer or further apart is installed on the connecting seat.

[0018] Furthermore, the centering fixture is a three-jaw chuck, and the inner clamping surfaces of the three jaws of the three-jaw chuck are provided with moving grooves. A moving block is slidably installed in the moving groove, and a return spring is installed between the moving block and the moving groove. A support rod is movably inserted into the return spring on the moving block, and one end of the moving block is external and is provided with a pressure plate for clamping the drill rod.

[0019] The beneficial effects of this invention are as follows:

[0020] This invention achieves automatic drill pipe replenishment with "zero waiting time" through the linkage of storage and push components, ensuring continuous drilling without downtime. This avoids energy waste caused by frequent start-stop cycles of the drive system, significantly reducing overall power consumption and achieving energy savings. The entire drill pipe docking process is completed collaboratively by the centering clamp, propulsion mechanism, and elastic fixing components, shortening auxiliary operation time and greatly improving single-cycle drilling efficiency. Simultaneously, operators do not need to enter the drilling danger zone, eliminating the risk of pinching or crushing injuries during manual handling and docking of drill pipes. The dual-centering structure of the three-jaw chuck and elastic fixing components ensures drill pipe coaxiality, reducing drill pipe scrap due to misalignment.

[0021] Compared with the prior art, this invention enables the rapid docking of extended drill pipes through a propulsion mechanism and a centering clamp, which not only reduces the labor intensity of workers but also makes docking drill bits more convenient and faster, effectively reducing safety hazards. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0023] Figure 2 This is the present invention. Figure 1 First state diagram of the structure;

[0024] Figure 3 This is the present invention. Figure 1 Second state diagram;

[0025] Figure 4 This is the present invention. Figure 1 Partial three-dimensional sectional view;

[0026] Figure 5 This is the present invention. Figure 1 Another partial sectional view;

[0027] Figure 6 This is the present invention. Figure 1 Enlarged view of the structure at point A in the middle;

[0028] Figure 7 This is a partial structural explosion of the invention. Figure 1 ;

[0029] Figure 8 This is the present invention. Figure 7 Enlarged view of the structure at point B in the middle;

[0030] Figure 9 This is a partial structural explosion of the invention. Figure 2 ;

[0031] Figure 10 This is a partial structural explosion of the invention. Figure 3 ;

[0032] Figure 11 This is a partial structural explosion of the invention. Figure 4 ;

[0033] Reference numerals: 1. Moving carrier; 2. Moving seat; 3. Mounting frame; 4. Drive seat; 5. Centering clamp; 6. Storage component; 601. Storage box; 602. Storage slot; 603. Feed slot; 7. Pushing component; 701. Moving plate; 702. Receiving slot; 703. Pushing frame plate; 8. Elastic fixing component; 801. Connecting seat; 802. Through slot; 803. Support plate; 804. Centering pressure block; 9. Linkage component; 901. Drive plate; 902. Pivot rod; 903. Linkage rod; 904. Movable slot; 905. Shaft; 10. Trigger; 1001. First rack; 1002. Second rack 1003. Drive gear; 11. Reset component; 1101. Mounting cylinder; 1102. First wedge plate; 1103. Connecting frame rod; 1104. Second wedge plate; 1105. Elastic telescopic rod; 1106. Actuating plate; 1107. Wedge groove; 12. Avoiding component; 1201. Third wedge plate; 1202. Protruding strip; 1203. Forcing inclined surface; 13. Return spring; 14. Transmission plate; 15. Hinge rod; 16. Trigger plate; 17. Baffle; 18. Drive component; 19. Moving groove; 20. Moving block; 21. Reset spring; 22. Support rod; 23. Pressure plate; 24. Hydraulic linear slide. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0035] like Figures 1-11 As shown, an embodiment of the present invention provides a drilling device for coal mine tunneling, comprising:

[0036] The mobile carrier 1 has a mobile seat 2 rotatably mounted on it. A mounting frame 3 is vertically rotatably mounted on the mobile seat 2. A drive seat 4 is horizontally slidably mounted on the mounting frame 3. A centering clamp 5 is rotatably mounted on the drive seat 4. Specifically, two tracks are symmetrically mounted on the mobile carrier 1 to drive its movement. A hydraulic push rod is hinged between the mobile seat 2 and the mounting frame 3. A hydraulic push rod is also hinged between the mounting frame 3 and the mobile carrier 1 (the hydraulic push rod is not shown in the figure). Similar to the drive structure of existing drilling devices, hydraulic drive is used. A hydraulic linear slide 24 is mounted on the mounting frame 3. The drive seat 4 is slidably mounted on the hydraulic linear slide 24 to drive its movement. A geared motor is mounted on the drive seat 4. A synchronous belt assembly is mounted between the geared motor and the centering clamp 5. The synchronous belt assembly can be a belt assembly or a chain assembly, which are common transmission components.

[0037] The propulsion mechanism includes a storage component 6 and a push component 7 mounted on the mounting frame 3. The storage component 6 is used to store multiple drill pipes. The storage component 6 has a temporary storage area that can accommodate one drill pipe. The push component 7 is used to transport the drill pipe located in the temporary storage area to the centering fixture 5. When there is no drill pipe in the temporary storage area, the storage component 6 can automatically transport the drill pipe into the temporary storage area.

[0038] The elastic fixing component 8 is mounted on the mounting bracket 3. The centering clamp 5 is located between the pushing component 7 and the elastic fixing component 8. It is used to clamp the drill rod. In use, the drill rod is mounted on the centering clamp 5. The drill bit is installed at the head end of the drill rod when it is first mounted on the centering clamp 5, and the tail end has a threaded groove. The head of the drill rod stored in the storage component 6 is a threaded head, and the tail end of the drill rod has a threaded groove. The threaded head can be screwed into the threaded groove. It should be noted that the tail end of the drill rod passes through the back of the centering clamp 5 (e.g., Figure 2 As shown), the centering clamp 5 rotates, causing the clamped drill rod to rotate. At this time, the drive seat 4 moves towards the elastic fixing component 8, thereby enabling the drill bit to drill. When the drive seat 4 moves to its maximum limit position, it is necessary to extend the drill rod. First, the centering clamp 5 releases its grip on the drill rod. During this process, the elastic fixing component 8 clamps the drill rod that needs to be extended, keeping the drill rod stable and facilitating subsequent docking. Then, the drive seat 4 moves away from the elastic fixing component 8. During this process, the push component 7 transports the drill rod in the temporary storage area to the centering clamp 5. In this embodiment, the centering clamp 5 can be a three-jaw chuck, which can be a hydraulic three-jaw chuck. The drill rod passes through... After passing through the positioning fixture, the drill rod is clamped by a three-jaw chuck. The three-jaw chuck then rotates and drives the seat 4 to move towards the fixed drill rod. At this time, the head end of the drill rod held by the three-jaw chuck protrudes from the chuck. The drill rod held by the three-jaw chuck rotates and moves towards the tail end of the fixed drill rod until the two drill rods are screwed together. After the two drill rods are tightened, the drill rod held by the elastic fixing component 8 will slip against the elastic fixing component 8, indicating that the docking is complete. Compared with the existing technology, the extension drill rod can be quickly docked by the propulsion mechanism in conjunction with the centering fixture 5. This not only reduces the labor intensity of the workers, but also makes docking the drill bit more convenient and faster, effectively reducing safety hazards.

[0039] like Figure 1 and Figure 5As shown, a portion of the structure of the push assembly 7 is disclosed. The push assembly 7 includes a movable plate 701 vertically slidably mounted on the mounting frame 3. The top of the movable plate 701 has a receiving groove 702, which can automatically receive drill rods in the temporary storage area. A push frame plate 703 is horizontally slidably mounted on one side of the movable plate 701. A linkage 9 acting on the drive seat 4 is mounted on the mounting frame 3. When the drive seat 4 moves to its maximum limit position during drilling, the linkage 9 drives the movable plate 701 to move upward, so that the drill rod located in the receiving groove 702 and the centering clamp 5 are on the same axis. That is, when the drive seat 4 moves to cooperate with the three-jaw chuck for drilling, the linkage 9 drives the movable plate 701 to move upward, so that the drill rod located in the receiving groove 702 and the centering clamp 5 are on the same axis. This causes the movable plate 701 to move upward, which in turn moves the drill rod in the receiving groove 702 upward until it is coaxial with the three-jaw chuck. Then, the drill rod is pushed by the push plate 703, so that part of the drill rod extends out of the receiving groove 702. When it is time to dock the drill rod, the three-jaw chuck moves towards the push component 7 (at this time, the three-jaw chuck does not hold the drill rod), so that the head of the drill rod in the receiving groove 702 passes through the three-jaw chuck. After the three-jaw chuck holds the drill rod, the head of the held drill rod is threadedly docked with the drill rod fixed by the elastic fixing component 8. This prepares for the next docking during the drilling process, thereby improving the docking efficiency of the drill rod.

[0040] like Figure 4 and Figure 5As shown, a portion of the structure of the linkage 9 is disclosed. The linkage 9 includes a drive plate 901 horizontally slidably mounted on the mounting bracket 3. A pivot rod 902 is rotatably mounted on the mounting bracket 3. One end of the pivot rod 902 is hinged to the drive plate 901 via a linkage rod 903. A movable slot 904 is horizontally opened on the movable plate 701. A shaft rod 905 is movably tangentially mounted in the movable slot 904 at the other end of the pivot rod 902. A trigger member 10 and a reset member 11 are mounted on the mounting bracket 3. When the drive seat 4 moves towards the maximum limit position in the direction close to the elastic fixing component 8, the reset member 11 and the trigger member 10 pass in sequence. After the drive seat 4 moves towards the maximum limit position in the direction close to the elastic fixing component 8, the trigger member 10 causes the drive plate 901 to move in one direction, and the reset member 11 causes the drive plate 901 to move and reset. That is to say, the drive seat 4... During the drilling process, after the drive seat 4 moves to its maximum limit position, the drive seat 4 uses the reset component 11 to move the drive plate 901 back to its initial position. The movement of the drive plate 901 drives the connecting rod 903 hinged to it to move. Since the connecting rod 903 is hinged to the pivot rod 902, the drive plate 901 will drive the pivot rod 902 to rotate through the connecting rod 903 when it moves back to its initial position. As the pivot rod 902 rotates, the internal shaft 905 at the other end of the pivot rod 902 will move in the movable groove 904, thereby forcing the moving plate 701 to move downwards to reset, so that the moving plate 701 can pick up the drill rod in the temporary storage area. After passing the trigger component 10, since the drive plate 901 has already picked up the drill rod, the moving plate 701 moves upwards to complete the preparation work for the next docking.

[0041] like Figure 1 , Figure 6 and Figure 9 As shown, the specific structure of the reset component 11 is disclosed. The reset component 11 includes a mounting cylinder 1101 mounted on the mounting bracket 3. A first wedge plate 1102 is elastically slidable inside the mounting cylinder 1101. Specifically, a spring is installed between the mounting cylinder 1101 and the first wedge plate 1102. The first wedge plate 1102 is connected to a connecting rod 1103 with one end located externally. A second wedge plate 1104 is horizontally elastically rotatably mounted on the free end of the connecting rod 1103. Specifically, two mounting rings are symmetrically constructed at one corner of the connecting rod 1103. A column rod fitted onto the two mounting rings is constructed at one corner of the second wedge plate 1104. A torsion spring is fitted on the column rod. One end of the torsion spring is connected to the mounting ring, and the other end is connected to the column rod, so that under normal conditions, such as Figure 1 and Figure 6As shown, the second wedge plate 1104 and the actuator plate 1106 remain perpendicular. Because the flat end of the second wedge plate 1104 abuts against the end of the connecting rod 1103, the second wedge plate 1104 can only rotate counterclockwise. After rotating clockwise to its maximum limit, it will still remain perpendicular to the actuator plate 1106. An elastic telescopic rod 1105 is installed between the mounting bracket 3 and the drive plate 901. The actuator plate 1106 is elastically and vertically slidably mounted on the drive seat 4, and it is used to contact the second wedge plate 1104. The drive plate 901 has a wedge groove 1107 for the first wedge plate 1102 to be inserted into. Figure 1 As shown, when the drive seat 4 moves to the right, the actuator plate 1106 will contact the inclined surface of the second wedge plate 1104, causing the drive frame plate to rotate. Because the flat end of the second wedge plate 1104 abuts against the end of the connecting rod 1103, when the actuator plate 1106 contacts the inclined surface of the second wedge plate 1104, it will force the connecting rod 1103 to move, thereby causing the first wedge plate 1102 to move and disengage from the wedge groove 1107. Under the action of the spring telescopic rod, the drive plate 901 will move and reset. Afterwards, when the actuator plate 1106 encounters the trigger 10, the drive plate 901 will move to the left until the first wedge plate 1102 is inserted into the wedge groove 1107. Then, when the drive seat 4 moves to the left to clamp the drill rod on the moving plate 701, the actuator plate 1106 will contact one side of the plane of the second wedge plate 1104, thereby causing the second wedge plate 1102 to rotate. When plate 1104 rotates counterclockwise, after the execution plate 1106 disengages from the second wedge plate 1104, the second wedge plate 1104 will rotate and reset under the action of the torsion spring. Therefore, during the movement of the drive seat 4 from right to left, the first wedge plate 1102 will not disengage from the wedge groove 1107, and thus the drive plate 901 will not move and reset. This will not affect the subsequent clamping of the drill rod in the receiving groove 702 by the three-jaw chuck. Only after the drill rod in the receiving groove 702 is clamped by the three-jaw chuck will the first wedge plate 1102 disengage from the wedge groove 1107 when the drive seat 4 moves from left to right. Afterward, when the drive seat 4 passes the trigger 10, the drive plate 901 will move and drive the moving plate 701 to move upward to facilitate the next docking of the drill rod. This linkage method can not only realize the automatic movement and reset of the drive plate 901 during drilling, effectively saving time, but also does not require additional driving force and is easy to operate.

[0042] like Figure 1 , Figure 6 and Figure 9As shown, the specific structure of the trigger 10 is disclosed. The trigger 10 includes a first rack 1001 mounted on the bottom of the actuator plate 1106 and a second rack 1002 mounted on the drive plate 901. A drive gear 1003 is rotatably mounted on the mounting bracket 3. The second rack 1002 is always meshed with the drive gear 1003. When the first rack 1001 passes the drive gear 1003, it meshes with the drive gear 1003. A avoidance member 12 is mounted on the mounting bracket 3. When the actuator plate 1106 moves from the position near the maximum limit of the elastic fixing component 8 to the other end... When the position is limited, the actuator 1106 first contacts the avoidance member 12, so that the first rack 1001 moves upward to avoid the drive gear 1003. That is, after the drive seat 4 moves from left to right and passes the reset member 11, the continued movement of the drive seat 4 will cause the first rack 1001 on the actuator 1106 to mesh with the drive gear 1003. Because the drive gear 1003 meshes with the second rack 1002, the drive plate 901 with the second rack 1002 will move in the opposite direction, thereby cooperating with the linkage 9 to make the moving plate 701 move upward. Figure 1 As shown, when the drive seat 4 moves from left to right, the actuator 1106 will contact the avoidance member 12, causing the actuator 1106 to move upward, indirectly causing the first rack 1001 to move upward. After the actuator 1106 passes the avoidance member 12, the actuator 1106 will return to its original position due to its own elasticity. At this time, the first rack 1001 has moved to the other side of the drive gear 1003, so the drive gear 1003 will not rotate, and the moving plate 701 will not suddenly drop, ensuring that the drive seat 4 can move smoothly horizontally without accidentally triggering the drive plate 901 to move.

[0043] like Figure 6 and Figure 9 As shown, the specific structure of the avoidance component 12 includes a third wedge plate 1201 that is elastically and horizontally slidably mounted on the mounting bracket 3. Specifically, a cylinder is mounted on the mounting bracket 3, and the third wedge plate 1201 is slidably inserted into the cylinder. A return spring is installed between the cylinder and the third wedge plate 1201. A protrusion 1202 is mounted on one side of the actuating plate 1106. One end of the protrusion 1202 has a forcing inclined surface 1203, which is used to contact the plane of the third wedge plate 1201. The inclined surface of the third wedge plate 1201 is used to contact the other end of the protrusion 1202. The protrusion 1202 is longer than the first rack 1001. Figure 1As shown, when the drive seat 4 moves from left to right, one end of the protrusion 1202 will contact the inclined surface of the third wedge plate 1201, causing the third wedge plate 1201 to retract. Then, when the drive seat 4 moves from right to left, the inclined surface 1203 of the protrusion 1202 will first contact the plane of the third wedge plate 1201, thereby forcing the actuator plate 1106 to move upward, indirectly causing the first rack 1001 to move upward so that when the actuator plate 1106 passes the drive gear 1003, the first rack 1001 will move horizontally above the drive gear 1003 and will not mesh with the drive gear 1003. This effectively prevents the first rack 1001 from accidentally driving the drive gear 1003 to rotate when the drive seat 4 moves from right to left. No additional driving force is required. The drive seat 4 can effectively prevent the drive gear 1003 from rotating accidentally when it moves horizontally normally, making it convenient to use.

[0044] like Figure 5 and Figure 6 As shown, the drive structure of the propulsion frame plate 703 is disclosed. A return spring 13 is installed between the propulsion frame plate 703 and the moving plate 701. A transmission plate 14 is vertically slidably installed inside the moving plate 701. A hinge rod 15 is installed between the transmission plate 14 and the propulsion frame plate 703. A trigger plate 16 located outside the moving plate 701 is constructed at one end of the transmission plate 14. A baffle 17 for contacting the trigger plate 16 is installed on the mounting bracket 3. When the moving plate 701 moves upward, the trigger plate 16 contacts the bottom of the baffle 17. After the moving plate 701 moves upward a certain distance... When the trigger plate 16 on the moving plate 701 contacts the baffle 17, the moving plate 701 continues to move. Relative to the moving plate 701, the transmission plate 14 moves downwards within the moving plate 701. During this movement, the transmission plate 14, through the hinge rod 15, drives the push plate 703 to move, thereby pushing the drill rod in the receiving slot 702, causing the drill rod's tip to extend out, facilitating subsequent clamping by the three-jaw chuck. This eliminates the need for additional control of the push plate 703's movement, making it more convenient to use. It should be noted that during subsequent drill rod docking, if... Figure 2 As shown, after the drill pipe connection is completed, as Figure 3 As shown, at this time, because the back of the three-jaw chuck still has a relatively long drill rod, and because the first rack 1001 meshes with the drive gear 1003, the moving plate 701 moves up a small portion, and the pusher plate 703 has not yet moved, the elastic fixing component 8 clamps the drill rod, controls the three-jaw chuck to release the drill rod, and then causes the drive seat 4 to move to the left to its maximum limit position. Subsequently, the three-jaw chuck clamps the drill rod (as shown in the image). Figure 1 As shown in the figure, this ensures that the drill rod after docking can be fully drilled during drilling.

[0045] like Figure 4 and Figure 5As shown, the storage component 6 has a specific structure. The storage component 6 includes a storage box 601 mounted on the mounting frame 3. A storage slot 602 is inclinedly opened inside the storage box 601. A feed slot 603 is opened above the highest point of the storage slot 602. Multiple drill rods are arranged in a linear array inside the storage slot 602. The lowest point of the storage slot 602 is an opening, which is a temporary storage area. Under normal conditions, the receiving slot 702 is located at the opening end. When the moving plate 701 moves, one side of the moving plate 701 blocks the opening end of the receiving slot 702. The storage slot 602 is inclined. When there are no drill rods in the receiving slot 702, the nearby drill rods can automatically roll into the receiving slot 702 under the action of gravity to complete automatic feeding. When the moving plate 701 moves upward, the moving plate 701 will block the opening end of the storage slot 602 to prevent the drill rods from rolling out from the opening end.

[0046] like Figure 11 As shown, the specific structure of the elastic fixing component 8 includes a connecting seat 801 mounted on the mounting bracket 3. The connecting seat 801 has a through groove 802 for the drill rod to pass through. Support plates 803 are symmetrically slidably mounted on the connecting seat 801. A centering block 804 is elastically slidably fitted onto one end of the support plate 803. Specifically, a sleeve is constructed on the support plate 803, and the sleeve is fitted onto the support plate 803. A spring is installed between the support plate 803 and the sleeve. The two centering blocks 804 each have two symmetrically connected inclined surfaces on opposite sides. A driving component 18 is installed on the connecting seat 801 to drive the two support plates 803 closer together or further apart. The driving component 18 is a hydraulic cylinder mounted on the connecting seat 801. The movable end of the hydraulic cylinder is connected to one of the support plates 803. Racks are mounted on opposite sides of the two support plates 803. Gears that mesh with the two racks are rotatably mounted on the connecting seat 801. When the movable end of the hydraulic cylinder moves, the two centering blocks 804 move simultaneously. After the two centering blocks 804 press the drill rod, when the tail end of the pressed drill rod is screwed into another drill rod, if the drill rod pressed by the centering blocks 804 slips, it means that the two drill rods have been tightened and can be drilled normally. This plays a protective role and prevents the threads from being damaged if the two drill rods are screwed in after tightening.

[0047] like Figure 7 and Figure 8As shown, in some embodiments, the centering clamp 5 is a three-jaw chuck. The inner clamping surfaces of the three jaws of the three-jaw chuck are provided with moving grooves 19. A moving block 20 is slidably installed in the moving groove 19. A return spring 21 is installed between the moving block 20 and the moving groove 19. A support rod 22 is constructed on the moving block 20 and is movably inserted into the return spring 21. One end of the moving block 20 is external and is constructed with a pressure plate 23 for clamping the drill rod. After the three-jaw chuck clamps the drill rod to be docked, the head end of the drill rod is clamped with the tail end of the drill rod held by the elastic fixing component 8. When the threads are screwed in, to prevent misalignment between the thread and the thread groove, if the two drill rods are misaligned while the three-jaw chuck is rotating and moving, the return spring 21 will be compressed until the interface between the drill rod thread and the thread groove is aligned. The spring will then return a short distance, indicating that the interface is aligned and the two drill rods are tightened. This effectively protects the thread groove of the drill rod from damage. During drilling, the support rod 22 is in hard contact with one end of the moving groove 19, so it will not affect normal drilling.

[0048] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A drilling apparatus for use in coal mining, characterised in that, Include: Mobile carrier (1), the mobile carrier (1) is rotationally mounted with mobile seat (2), the mobile seat (2) is vertically rotationally mounted with mounting rack (3), the mounting rack (3) is horizontally slidably mounted with drive seat (4), the drive seat (4) is rotationally mounted with centering fixture (5); Propulsion mechanism, including the storage assembly (6) and push assembly (7) mounted on the mounting rack (3), the storage assembly (6) is used for storing a plurality of drill pipes, the storage assembly (6) has a temporary storage area, the temporary storage area can accommodate a drill pipe, the drill pipe in the temporary storage area is transported into the centering fixture (5) by the push assembly (7), when there is no drill pipe in the temporary storage area, the storage assembly (6) automatically transports the drill pipe into the temporary storage area; Elastic fixing assembly (8) is installed on the mounting rack (3), the centering fixture (5) is located between the push assembly (7) and the elastic fixing assembly (8), which is used for clamping the drill pipe; The push assembly (7) includes a moving plate (701) vertically slidably mounted on the mounting rack (3), the moving plate (701) is provided with a receiving groove (702) on the top, and the moving plate (701) is provided with a propulsion rack plate (703) horizontally slidably mounted on one side, the mounting rack (3) is provided with a linkage (9) acting on the drive seat (4), when the drive seat (4) drills into the maximum limit position, the moving plate (701) is driven to move upward by the linkage (9), so that the drill pipe located in the receiving groove (702) is located on the same axis with the centering fixture (5); The linkage (9) includes a drive plate (901) horizontally slidably mounted on the mounting rack (3), a pivot rod (902) rotationally mounted on the mounting rack (3), a linkage rod (903) hingedly connected between one end of the pivot rod (902) and the drive plate (901), a movable slot (904) horizontally provided on the moving plate (701), an axle rod (905) movably tangent to the movable slot (904) mounted on the other end of the pivot rod (902), a trigger (10) and a reset (11) are mounted on the mounting rack (3), when the drive seat (4) moves to the maximum limit position in the direction close to the elastic fixing assembly (8), the reset (11) and the trigger (10) are sequentially passed, when the drive seat (4) moves to the maximum limit position in the direction close to the elastic fixing assembly (8), the drive plate (901) is moved in a direction by the trigger (10), and the drive plate (901) is reset by the reset (11); The reset member (11) comprises a mounting cylinder (1101) mounted on the mounting frame (3), a first wedge-shaped plate (1102) elastically sliding in the mounting cylinder (1101), a connecting frame rod (1103) connected to one end of the first wedge-shaped plate (1102) and located outside, a second wedge-shaped plate (1104) horizontally and elastically rotatingly mounted at the free end of the connecting frame rod (1103), an elastic telescopic rod (1105) mounted between the mounting frame (3) and the driving plate (901), an execution plate (1106) elastically and vertically slidingly mounted on the driving seat (4) and used for contacting the second wedge-shaped plate (1104), and a wedge-shaped groove (1107) provided in the driving plate (901) and used for inserting the first wedge-shaped plate (1102). The trigger member (10) comprises a first rack (1001) mounted on the bottom of the execution plate (1106) and a second rack (1002) mounted on the driving plate (901), a driving gear (1003) rotatingly mounted on the mounting frame (3), the second rack (1002) always meshing with the driving gear (1003), the first rack (1001) meshing with the driving gear (1003) when passing through the driving gear (1003), and an avoiding member (12) mounted on the mounting frame (3), when the execution plate (1106) moves from the maximum limit position close to the elastic fixing assembly (8) to another limit position, the execution plate (1106) firstly contacts the avoiding member (12) to make the first rack (1001) move upwards to avoid the driving gear (1003). The avoiding member (12) comprises a third wedge-shaped plate (1201) elastically and horizontally slidingly mounted on the mounting frame (3), a convex strip (1202) mounted on one side of the execution plate (1106), an end of the convex strip (1202) provided with a forcing inclined surface (1203) used for contacting the plane of the third wedge-shaped plate (1201), and an inclined surface of the third wedge-shaped plate (1201) used for contacting the other end of the convex strip (1202), the convex strip (1202) being longer than the first rack (1001).

2. A drilling apparatus for use in coal mining according to claim 1 wherein, A homing spring (13) is mounted between the moving plate (701) and the advancing frame plate (703), a transmission plate (14) is vertically slidingly mounted in the moving plate (701), a hinged rod (15) is mounted between the transmission plate (14) and the advancing frame plate (703), one end of the transmission plate (14) is configured as a trigger plate (16) located outside the moving plate (701), a baffle (17) is mounted on the mounting frame (3) and used for contacting the trigger plate (16), and when the moving plate (701) moves upwards, the trigger plate (16) contacts the bottom of the baffle (17).

3. The drilling apparatus for coal mine tunneling according to claim 1, characterized in that, The storage assembly (6) comprises a storage box (601) mounted on the mounting frame (3), an inclined storage groove (602) is formed in the storage box (601), a feeding groove (603) is formed above the highest end of the storage groove (602), a plurality of drill rods are arranged in a linear array in the storage groove (602), the lowest end of the storage groove (602) is an opening, the opening end is a temporary storage area, and in a normal state, the containing groove (702) is located at the opening end, and when the moving plate (701) moves, one side of the moving plate (701) blocks the opening end of the containing groove (702).

4. The drilling apparatus for coal mine tunneling according to claim 1, characterized in that, The elastic fixing assembly (8) comprises a connecting seat (801) mounted on the mounting frame (3), a through groove (802) is formed in the connecting seat (801) for the drill rod to pass through, support plates (803) are symmetrically and slidably mounted on the connecting seat (801), a centering pressing block (804) is elastically and slidably mounted at one end of the support plate (803), two inclined surfaces connected with each other are symmetrically arranged on the opposite sides of the two centering pressing blocks (804), and a driving member (18) is mounted on the connecting seat (801) and used to drive the two support plates (803) to move close to or away from each other.

5. The drilling apparatus for coal mine tunneling according to claim 1, characterized in that, The centering clamp (5) is a three-jaw chuck, and the inner clamping surfaces of the three clamping jaws of the three-jaw chuck are provided with moving grooves (19). A moving block (20) is slidably mounted in the moving groove (19). A return spring (21) is mounted between the moving block (20) and the moving groove (19). The moving block (20) is provided with a support rod (22) movably inserted into the return spring (21). One end of the moving block (20) is externally provided with a pressing plate (23) for clamping the drill rod.

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