Drill rod loading and unloading device

Abstract

The utility model relates to the technical field of engineering machinery, in particular to a drill rod loading and unloading device which comprises an installation seat, a sliding seat arranged on the installation seat in a sliding mode, a linear driving mechanism driving the sliding seat to slide, a clamping mechanism located on the sliding seat and a rotating mechanism driving the clamping mechanism to rotate. A guide rod matched with the sliding sleeve is arranged on the installation base, and the sliding sleeve is arranged on the guide rod in a sleeving mode. According to the utility model, the original sliding mode is changed into the matching of the sliding sleeve and the guide rod, thereby avoiding the overlarge gap caused by the abrasion of the sliding chute structure, improving the use precision of the sliding mechanism and prolonging the service life of the sliding mechanism. The installation of the stroke amplification mechanism is beneficial to reducing the volume of the telescopic rod and the rack. The slips are controlled by the upper and lower hydraulic cylinders to clamp the drill rod, and meanwhile, the clamping height can be adjusted to ensure that the rod adding height is aligned with the rotating axis of the power head.

Description

Technical Field

[0001] The utility model relates to the technical field of construction machinery, in particular to a drill pipe adding and unloading device. Background Art

[0002] The drill pipe is one of the core components of a mine tunnel drill, which is used to convert power into rotational force and thrust to drill underground minerals or rocks. During the drilling process, as the borehole deepens, it is necessary to continuously add drill pipes to extend the drilling depth. At the same time, when encountering complex geological conditions or damaged drill pipes, it is necessary to promptly remove the drill pipes for replacement. The existing power head type tunnel drill is equipped with a drill pipe box for storing multiple rows of drill pipes. The drill pipe is transported from the drill pipe box to the transfer bracket by a robotic arm, and then from the transfer bracket to the drill rig main unit. After the drill pipe is transported near the drill rig main unit, the clamping assembly clamps the drill pipe. At this time, the telescopic assembly extends, driving the clamping assembly and the drill pipe to move along the drilling axis of the drill rig main unit. The rotating assembly operates, driving the drill pipe to rotate 90°, so that the axis of the drill pipe coincides or substantially coincides with the drilling axis of the drill rig main unit. The power head of the drill rig main unit rotates forward to tighten the joints between the drill pipes, thus quickly completing the replacement of the drill pipes.

[0003] However, the current tunnel drill uses a robotic arm to rotate around the axis to add or unload drill pipes, which has relatively high requirements for the height or width of the tunnel. Otherwise, the drill rig cannot operate normally. To solve this problem, the applicant proposed an invention patent with the patent number CN202310054991.0 and the patent name of drill pipe adding and unloading device and tunnel drill. This solution includes a mounting base, and also includes a drill pipe conveying mechanism and a drill pipe adding and unloading mechanism. The drill pipe conveying mechanism and the drill pipe adding and unloading mechanism are connected to the mounting base; the drill pipe adding and unloading mechanism includes a clamping assembly, a rotating assembly and a telescopic assembly. The clamping assembly is used to clamp the drill pipe. The rotating assembly is connected to the clamping assembly and can drive the clamping assembly to rotate, and the rotation axis is perpendicular or substantially perpendicular to the axis of the through hole. The telescopic assembly is connected to the rotating assembly and can drive the rotating assembly to move; a through hole for the drill pipe to pass through is provided on the mounting base, and the drill pipe can move through the through hole under the drive of the drill pipe conveying mechanism and be clamped by the clamping assembly. The drill pipe loading and unloading mechanism also includes a bracket and a mounting frame. The end of the mounting frame extends into the guide groove and cooperates with the guide groove for relative sliding, so that the mounting frame can be suspended on the bracket.

[0004] However, no matter whether the guide groove is a dovetail groove, a rectangular groove or a wedge-shaped groove, wear will occur during the sliding process. After wear, the gap will become larger, which will affect the service life of the mechanism and the accuracy during the drill pipe adding and unloading process. Therefore, it is necessary to further improve the drill pipe adding and unloading mechanism of the tunnel drill. Summary of the Utility Model

[0005] To solve the problem that the chute structure in the existing technology will wear during the sliding process, and the gap will become larger after wear, which will affect the service life of the mechanism and the accuracy during the process of adding and removing the rod, the present utility model provides a drill pipe adding and removing device with high use accuracy and long service life of its sliding mechanism.

[0006] To achieve the above object, the following technical solutions are proposed:

[0007] A drill pipe adding and removing device includes a mounting seat, a sliding seat slidably arranged on the mounting seat, a linear driving mechanism for driving the sliding seat to slide, a clamping mechanism located on the sliding seat, and a rotating mechanism for driving the clamping mechanism to rotate. Sliding sleeves are provided on both sides of the sliding seat, and guide rods cooperating with the sliding sleeves are provided on the mounting seat, and the sliding sleeves are sleeved on the guide rods.

[0008] Further, the linear driving mechanism includes a telescopic rod. A vertical guiding column is provided on the sliding seat, and the vertical guiding rod is connected to the telescopic end of the telescopic rod. A first guiding groove hole cooperating with the vertical guiding column is provided on the mounting seat.

[0009] Further, the linear driving mechanism further includes a stroke amplification mechanism. The stroke amplification mechanism includes a frame, a first connecting rod, a second connecting rod and a rotating connecting rod. The telescopic rod is installed on the frame. The middle part of the rotating connecting rod is rotatably installed in the frame. The two ends of the rotating connecting rod are respectively hinged to the ends of the first connecting rod and the second connecting rod; the other end of the first connecting rod is hinged to the rear end of the frame. A push rod is connected to the telescopic end of the telescopic rod, and both ends of the push rod are respectively connected to the vertical guiding column; the other end of the second connecting rod is hinged to the push rod.

[0010] Further, the clamping mechanism includes a clamping bracket, chucks oppositely arranged up and down inside the clamping bracket, and a piston for driving the chucks to move oppositely.

[0011] Further, a second guiding groove hole is provided on the mounting seat. The rotating mechanism includes a rack located at the edge of the second guiding groove hole and a rotating shaft vertically rotatably arranged inside the sliding seat. The lower part of the rotating shaft is connected to the clamping bracket, and a rotating gear is connected above. The rotating gear is located in the second guiding groove hole. The linear driving mechanism drives the sliding seat to move linearly. During the stroke of the rotating gear moving along the second guiding groove hole, the rotating gear can be engaged with the rack to drive the clamping bracket to rotate.

[0012] Further, a pulley seat cooperating with the sliding sleeve is further provided inside the mounting seat.

[0013] The beneficial effects of the present utility model are as follows:

[0014] 1. The original sliding method is changed to the cooperation of the sliding sleeve and the guide rod, avoiding the excessive gap caused by the wear of the chute structure, and improving the use accuracy and service life of the sliding mechanism;

[0015] 2. Installing a stroke amplification mechanism is beneficial to reducing the volumes of the telescopic rod and the frame.

[0016] 3. The slips are controlled by the upper and lower hydraulic cylinders to clamp the drill pipe, and at the same time, the clamping height can be adjusted to ensure that the rod adding height is aligned with the rotation axis of the power head. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic diagram of the overall structure of the drill pipe adding and removing device of the present utility model;

[0018] Figure 2 is an exploded structure diagram of the drill pipe adding and removing device of the present utility model;

[0019] Figure 3 is a front sectional view structure diagram of the drill pipe adding and removing device of the present utility model;

[0020] Figure 4 is a side sectional view structure diagram of the drill pipe adding and removing device of the present utility model;

[0021] Figure 5 is a top sectional view of the drill pipe adding and removing device of the present utility model;

[0022] Figure 6 is a schematic diagram of the structure of the stroke amplification mechanism of the drill pipe adding and removing device of the present utility model;

[0023] Figure 7 is a schematic diagram of the structure of the telescopic rod of the drill pipe adding and removing device of the present utility model;

[0024] Figure 8 is a schematic diagram of the structure of the drill pipe adding and removing device of the present utility model on the mainframe of the drill rig;

[0025] In the figure: 1. mounting seat; 2. sliding seat; 3. sliding sleeve; 4. guide rod; 5. telescopic rod; 6. vertical guide post; 7. first guide slot hole; 8. frame; 9. first connecting rod; 10. second connecting rod; 11. rotating connecting rod; 12. push rod; 13. clamping bracket; 14. slips; 15. piston; 16. second guide slot hole; 17. rack; 18. rotating gear; 19. pulley seat; 20. cover plate; 21. mounting shroud; 22. mainframe mounting plate; 23. through cavity; 24. drill pipe; 25. hydraulic oil circuit; 26. rotating bearing; 27. sliding bearing; 28. power head; 29. mainframe of the drill rig. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] The following describes in detail a drill pipe adding and removing device of the present utility model in conjunction with the embodiments.

[0027] A drill pipe adding and removing device includes a mounting base 1, a sliding seat 2 slidably arranged on the mounting base 1, a linear driving mechanism for driving the sliding seat 2 to slide, a clamping mechanism located on the sliding seat 2, and a rotating mechanism for driving the clamping mechanism to rotate. Slide sleeves 3 are arranged on both sides of the sliding seat 2, and guide rods 4 cooperating with the slide sleeves 3 are arranged on the mounting base 1. The slide sleeves 3 are sleeved on the guide rods 4.

[0028] As Figure 1 , Figure 2 , Figure 8 shown, the clamping mechanism can be a hydraulic fixture, which controls the opening and closing under hydraulic action to clamp and release the drill pipe 24. In this embodiment, the drill pipe 24 is fed from the position of the through cavity 23 at the rear side of the mounting base 1. At this time, the axis of the drill pipe 24 is perpendicular to the axis of rotation of the power head 28 of the drilling rig. The power head 28 of the drilling rig main unit 29 is reversed to separate the power head 28 from the on-line drill pipe 24, and then the power head 28 slides horizontally through the hydraulic rod to make room for adding the drill pipe. After the clamping mechanism clamps the drill pipe 24, the linear driving mechanism drives the sliding seat 2 and the clamping mechanism to move forward to the front side of the mounting base 1. Until the drill pipe 24 completely passes through the through cavity 23, the rotating mechanism drives the clamping mechanism to turn. After turning 90°, the axis of the drill pipe 24 coincides with the axis of rotation of the power head 28. Then the power head 28 of the drilling rig main unit 29 rotates forward and tightens the joint of the drill pipe 24. After docking the drill pipe 24, the clamping mechanism releases the added drill pipe 24. After the drill pipe 24 is installed, the rotating mechanism rotates reversely by 90°, and the linear driving mechanism drives the sliding seat 2 to reset.

[0029] The mounting base 1 includes a main machine mounting plate 22 at the bottom, a vertical support plate on one side of the main machine mounting plate 22, and an installation enclosure 21 at the upper part of the vertical support plate to form a frame structure. The guide rods 4 are installed in this frame structure, and a cover plate 20 is installed at the top of this frame structure. Installation holes are provided on both sides of the installation enclosure located at the front side of this frame for installing one end of the guide rod on this installation enclosure through a flange. An avoidance hole is also provided in the middle of this installation enclosure for avoiding the sliding seat.

[0030] In addition, in order to reduce the friction between the guide rod 4 and the slide sleeve 3, a sliding bearing 27 is also installed in the slide sleeve 3.

[0031] In one embodiment, a mechanism for controlling the clamping height is also provided on the clamping mechanism. For example, the drill pipe 24 can be clamped by upper and lower hydraulic cylinders, and the height position can be adjusted by adjusting the telescopic amount of the upper and lower hydraulic cylinders. Or an expansion rod 5 can be installed between the rotating mechanism and the clamping mechanism, and the height of the clamping mechanism can be controlled by using the expansion rod 5.

[0032] As Figure 1 , Figure 2 , Figure 7As shown in the figure, the linear drive mechanism includes a telescopic rod 5. Vertical guide columns 6 are provided on both sides of the sliding seat 2. The vertical guide rod 4 is connected to the telescopic end of the telescopic rod 5. A first guide slot hole 7 that cooperates with the vertical guide column 6 is provided on the mounting seat 1.

[0033] In this embodiment, a slider is provided at the bottom of the telescopic end of the telescopic rod 5. The slider is strip-shaped and is used to slide in the first guide slot hole 7 and is connected to the vertical guide column 6 of the sliding seat 2. The telescopic movement of the telescopic rod 5 drives the sliding seat 2 to slide on the guide rod 4.

[0034] As Figure 2 、 Figure 5 、 Figure 6 、 Figure 7 As shown in the figure, the linear drive mechanism further includes a stroke amplification mechanism. The stroke amplification mechanism includes a frame 8, a first connecting rod 9, a second connecting rod 10, and a rotating connecting rod 11. The telescopic rod 5 is installed on the frame 8. The middle part of the rotating connecting rod 11 is rotatably installed in the frame 8. The two ends of the rotating connecting rod 11 are respectively hinged to the ends of the first connecting rod 9 and the second connecting rod 10. The other end of the first connecting rod 9 is hinged to the rear end of the frame 8. A push rod 12 is connected to the telescopic end of the telescopic rod 5. The two ends of the push rod 12 are respectively connected to the vertical guide columns 6. The other end of the second connecting rod 10 is hinged to the push rod 12.

[0035] The purpose of the stroke amplification mechanism is to change the positional relationship between the input and output connection points, so that the output has a greater displacement than the input, thereby amplifying the stroke, amplifying the moving distance of the sliding seat 2, and facilitating the reduction of the volumes of the telescopic rod 5 and the frame 8. In this embodiment, the first connecting rod 9 and the second connecting rod 10 are relatively parallel. An installation groove is provided on one side of the push rod 12. One end of the second connecting rod 10 is hinged in the installation groove through a pin. The frame 8 is a hollow structure, with openings on both sides and in the middle of the top. The openings on both sides are used to avoid the extension and folding of each connecting rod, and the opening on the top is used to facilitate the connection between the telescopic end of the telescopic rod 5 and the push rod 12 through the slider. When the telescopic rod 5 contracts, the telescopic end drives the vertical guide rod 4 and the sliding seat 2 to move outward from the mounting seat 1. At the same time, the second connecting rod 10, the first connecting rod 9, and the rotating connecting rod 11 fold. On the contrary, the telescopic end drives the vertical guide rod 4 and the sliding seat 2 to move inward from the mounting seat 1. At the same time, the second connecting rod 10, the first connecting rod 9, and the rotating connecting rod 11 extend.

[0036] As Figure 2 、 Figure 3 、 Figure 4 As shown in the figure, the clamping mechanism includes a clamping bracket 13, chucks 14 arranged oppositely up and down inside the clamping bracket 13, and a piston 15 for driving the chucks 14 to move oppositely. A hydraulic oil circuit 25 corresponding to the internal oil cavity of the piston 15 is opened on the clamping bracket 13. The corresponding movement of the chucks 14 is realized through the hydraulic principle to clamp and release the drill pipe 24.

[0037] In this embodiment, the piston 15 includes an upper piston and a lower piston, which respectively drive the upper and lower slips 14. By adjusting the telescopic amounts of the two pistons 15, the clamping height of the drill pipe 24 can be adjusted to ensure the installation accuracy of the subsequent drill pipe 24.

[0038] As Figure 1 , Figure 2 , Figure 5 shown, a second guide slot hole 16 is provided on the mounting seat 1. The rotating mechanism includes a rack 17 located at the edge of the second guide slot hole 16 and a rotating shaft vertically and rotatably arranged in the sliding seat 2. The lower part of the rotating shaft is connected to the clamping bracket 13, and the upper part is connected with a rotating gear 18. The rotating gear 18 is located in the second guide slot hole 16. The linear driving mechanism drives the sliding seat 2 to move linearly. During the moving stroke of the rotating gear 18 along the second guide slot hole 16, the rotating gear 18 can engage with the rack 17 to drive the rotating shaft and the clamping bracket 13 to rotate.

[0039] The first guide slot hole 7, the second guide slot hole 16 and the frame 8 are all located on the cover plate 20. The rack 17 is located on the second guide slot hole 16, that is, on the path where the sliding seat 2 moves outward from the mounting seat 1.

[0040] After the drill pipe 24 is conveyed to the slips 14 on the clamping bracket 13 and firmly clamped, the telescopic rod 5 starts to work, driving the sliding seat 2 together with the clamping bracket 13 and the drill pipe 24 to move towards the drill rig power head 28 on the outside of the mounting seat 1. When the drill pipe 24 is completely conveyed out of the through cavity 23 on the side of the vertical support plate, the drill pipe 24 can be rotated to make the drill pipe 24 rotate 90°, so that it is parallel to the rotation axis of the power head 28. Then, the upper piston 15 and the lower piston 15 on the clamping bracket 13 are used to assist in adjusting the height of the drill pipe 24, so that the drill pipe 24 falls on the rotation axis of the power head 28. Then, the power head 28 rotates forward to connect the drill pipe 24 with other drill pipes 24 into one body, completing the rod adding operation. When removing the rod, the operation is opposite.

[0041] The position of the rack 17 is to ensure that the sliding seat 2 moved by the telescopic rod 5 can move in place before turning. After rotation, the axis of the drill pipe 24 coincides or is basically coincident with the drilling axis of the drill rig main body 29 to ensure the success rate of rod replacement.

[0042] As Figure 2 shown, a pulley seat 19 that cooperates with the sliding sleeve 3 is further provided inside the mounting seat 1. The pulley seat 19 is fixed inside the mounting enclosure 21 and provides a side limiting function for the sliding seat 2.

Claims

1. A drill pipe adding and removing device, comprising a mounting seat (1), a sliding seat (2) slidably arranged on the mounting seat (1), a linear driving mechanism for driving the sliding seat (2) to slide, a clamping mechanism located on the sliding seat (2), and a rotating mechanism for driving the clamping mechanism to rotate, characterized in that, Sliding sleeves (3) are provided on both sides of the sliding seat (2), and guide rods (4) that cooperate with the sliding sleeves (3) are provided on the mounting seat (1). The sliding sleeves (3) are sleeved on the guide rods (4).

2. The drill pipe adding and removing device according to claim 1, characterized in that, The linear drive mechanism includes a telescopic rod (5). A vertical guide post (6) is provided on the sliding seat (2). The vertical guide rod (4) is connected to the telescopic end of the telescopic rod (5). A first guide slot hole (7) that cooperates with the vertical guide post (6) is provided on the mounting seat (1).

3. The drill pipe adding and removing device according to claim 2, wherein, The linear drive mechanism further includes a stroke amplification mechanism. The stroke amplification mechanism includes a frame (8), a first connecting rod (9), a second connecting rod (10), and a rotating connecting rod (11). The telescopic rod (5) is installed on the frame (8). The middle of the rotating connecting rod (11) is rotatably installed inside the frame (8). The two ends of the rotating connecting rod (11) are respectively hinged to the ends of the first connecting rod (9) and the second connecting rod (10). The other end of the first connecting rod (9) is hinged to the rear end of the frame (8). A push rod (12) is connected to the telescopic end of the telescopic rod (5). The two ends of the push rod (12) are respectively connected to the vertical guide posts (6). The other end of the second connecting rod (10) is hinged to the push rod (12).

4. The drill pipe adding and removing device according to any one of claims 1 to 3, characterized in that, The clamping mechanism includes a clamping bracket (13), jaws (14) arranged oppositely up and down inside the clamping bracket (13), and a piston (15) for driving the jaws (14) to move oppositely.

5. The drill pipe adding / removing device according to claim 4, characterized in that, A second guide slot hole (16) is provided on the mounting seat (1). The rotating mechanism includes a rack (17) located at the edge of the second guide slot hole (16) and a rotating shaft rotatably arranged vertically inside the sliding seat (2). The lower part of the rotating shaft is connected to the clamping bracket (13), and the upper part is connected to a rotating gear (18). The rotating gear (18) is located inside the second guide slot hole (16). The linear drive mechanism drives the sliding seat (2) to move linearly. During the stroke of the rotating gear (18) moving along the second guide slot hole (16), the rotating gear (18) can engage with the rack (17) to drive the clamping bracket (13) to rotate.

6. The drill pipe adding and removing device according to claim 1, 2, 3 or 5, characterized in that A pulley seat (19) that cooperates with the sliding sleeve (3) is further provided inside the mounting seat (1).

7. The drill pipe adding and removing device according to claim 4, wherein, A pulley seat (19) that cooperates with the sliding sleeve (3) is further provided inside the mounting seat (1).

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