A structurally stable drilling rig mast

Abstract

The utility model discloses a kind of structural stable rig drill arms, including big arm, connecting frame and adjusting device, the adjusting device is connected with big arm and connecting frame respectively, the adjusting device includes support plate, movable seat and second angle adjusting seat, the support plate is fixedly connected with big arm, the movable seat includes first structure plate, second structure plate, support pivot and connecting plate, the connecting plate is fixedly connected with first structure plate and second structure plate respectively, the first structure plate is fixedly connected with first angle adjusting plate, the support plate is fixedly connected with first angle adjusting shaft, the first angle adjusting plate is rotatably connected with first angle adjusting shaft, the support pivot is fixedly connected with connecting frame, the extension direction of the support pivot coincides with the extension direction of big arm, the connecting frame is located at the end of support pivot away from big arm.The utility model achieves the advantage that the rig drill arm structure is stable.

Description

Technical Field

[0001] This utility model relates to the technical field of drilling rig arms, and specifically to a structurally stable drilling rig arm. Background Technology

[0002] A drilling rig is a mechanical device used in exploration or mineral resource development to drill into the ground using drilling tools. The drilling rig is equipped with a drill arm, which drives the drill string and allows for adjustment of its position and angle. During drilling, the drill string will sway; to ensure stability, the drill arm needs to have good stability.

[0003] Chinese utility model patent CN204511317U discloses a down-the-hole drill arm capable of horizontal or vertical bidirectional drilling. It includes a main arm connected to the drill rig chassis and a compensating frame for mounting a propulsion beam. The front end of the main arm has a hinge seat and a support lug. A connecting rod is hinged to the hinge seat, and a rocker arm is hinged to the support lug via a first hinge shaft. The rocker arm has a front hinge hole and a rear hinge hole at both ends. A main hydraulic cylinder is connected above the main arm, with its core rod connected to the rear hinge hole. A connecting seat is hinged to the front hinge hole, and the rear end of the connecting seat is hinged to the connecting rod. The compensating frame is hinged to one side of the front end of the connecting seat via a second hinge shaft. An auxiliary hydraulic cylinder is hinged to one end of the compensating frame, and its core rod is hinged to the front end of the connecting seat. The main hydraulic cylinder drives the connecting seat to rotate via the rocker arm, and through the cooperation of the connecting rod and other components, the connecting seat and compensating frame can rotate to horizontal and vertical positions, achieving horizontal and vertical bidirectional drilling.

[0004] In the aforementioned down-the-hole drill arm capable of horizontal or vertical bidirectional drilling, the compensating frame is installed offset on one side of the main arm. The impacts and vibrations generated during drill bit operation create a torque around the main arm, making it prone to torsion and affecting its structural stability. Therefore, the existing drill arm technology suffers from poor structural stability. Utility Model Content

[0005] In order to solve the above-mentioned technical problems, the purpose of this utility model is to provide a drill arm with a stable structure, which includes a boom, a connecting frame and an adjustment device. This drill arm with a stable structure has the advantage of good structural stability.

[0006] To achieve the above-mentioned objectives, the technical solution adopted by this utility model is as follows:

[0007] A structurally stable drilling arm includes a boom, a connecting frame, and an adjustment device. The adjustment device is connected to both the boom and the connecting frame. The adjustment device includes a support plate, a movable seat, and a second angle adjustment seat. The support plate is fixedly connected to the boom. The movable seat includes a first structural plate, a second structural plate, a support shaft, and a connecting plate. The connecting plate is fixedly connected to both the first and second structural plates. A first angle adjustment plate is fixedly connected to the first structural plate. A first angle adjustment shaft is fixedly connected to the support plate. The first angle adjustment plate is rotatably connected to the first angle adjustment shaft. The support shaft is rotatably connected to both the first and second structural plates. The support shaft is fixedly connected to the connecting frame. The extension direction of the support shaft coincides with the extension direction of the boom. The connecting frame is located at the end of the support shaft furthest from the boom.

[0008] Preferably, the second angle adjustment seat includes a side plate and a second angle adjustment plate, wherein the side plate is fixedly connected to the connecting frame, and the second angle adjustment plate is fixedly connected to the side plate.

[0009] Preferably, a second angle adjustment shaft is provided between the first structural plate and the second structural plate, and the two ends of the second angle adjustment shaft are fixedly connected to the first structural plate and the second structural plate, respectively.

[0010] Preferably, a second angle driving component is provided between the second angle adjusting seat and the second angle adjusting shaft. The second angle driving component is a second oil cylinder whose two ends are respectively rotatably connected to the second angle adjusting plate and the second angle adjusting shaft.

[0011] Preferably, the adjustment device further includes a first connecting rod and a second connecting rod. The first connecting rod is rotatably connected to the support plate, and the second connecting rod is rotatably connected to the connecting plate. The first connecting rod is fixedly connected to a drive shaft that is rotatably connected to the second connecting rod. A first angle driving component is provided between the boom and the drive shaft.

[0012] Preferably, the first angle driving component is a first hydraulic cylinder whose two ends are respectively rotatably connected to the drive shaft and the boom.

[0013] Preferably, the middle part of the first connecting rod is provided with a curved section that bends away from the first angle adjustment axis.

[0014] Preferably, the connecting plate includes a surrounding support section and an extended support section, the surrounding support section surrounding the outside of the support pivot, and the extended support section extending toward the second angle adjustment pivot.

[0015] Preferably, the upper arm is fixedly connected to an extension plate, the support plate is fitted with the extension plate, and the first angle adjustment shaft passes through the extension plate.

[0016] Compared with the prior art, this utility model has achieved beneficial technical effects:

[0017] 1. The support shaft is located in the extension direction of the boom, which ensures that the connecting frame drill bit always passes through the extension direction of the boom during rotation, avoiding the drill bit and boom offset, effectively reducing the torque generated by the drill bit on the boom, and improving the structural stability of the boom, thus achieving the advantage of better drilling rig boom structural stability.

[0018] 2. A first angle adjustment plate, rotatably connected to the first angle adjustment shaft, is installed on the first structural plate, enabling adjustment of the drill bit's pitch angle. The drill bit needs to adjust its pitch angle to achieve horizontal and vertical drilling methods, requiring a relatively large adjustment angle. Therefore, placing the first angle adjustment plate and the first angle adjustment shaft at the end of the adjustment device near the boom reduces the torque on the boom during large-amplitude pitch angle adjustments. Thus, placing the first angle adjustment shaft at the end of the adjustment device near the boom effectively ensures the reliability of the drill arm when the drill bit is drilling in different methods. Attached Figure Description

[0019] Figure 1 This is a structural schematic diagram of a drill arm with a stable structure according to an embodiment of the present invention;

[0020] Figure 2 This is a schematic diagram of the structure of the adjusting device in an embodiment of this utility model;

[0021] Figure 3 This is a schematic diagram of the structure of the first connecting rod and the second connecting rod in an embodiment of this utility model;

[0022] Figure 4 This is a schematic diagram of the supporting shaft and connecting frame in an embodiment of this utility model;

[0023] Figure 5 This is a schematic diagram of the structure of the connecting plate and the second angle adjustment shaft in an embodiment of this utility model.

[0024] The technical features referred to by the various reference numerals in the accompanying drawings are as follows:

[0025] 11. Boom; 12. Support plate; 13. Extension plate; 21. First structural plate; 22. Second structural plate; 23. Support shaft; 24. Connecting plate; 25. Surrounding support section; 26. Extended support section; 27. Bushing; 31. First angle adjustment plate; 32. First angle adjustment shaft; 33. First connecting rod; 34. Bending section; 35. Second connecting rod; 36. Drive shaft; 37. First hydraulic cylinder; 41. Side plate; 42. Second angle adjustment plate; 43. Second angle adjustment shaft; 44. Second hydraulic cylinder; 51. Connecting frame. Detailed Implementation

[0026] To make the objectives, technical solutions and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the embodiments. However, the scope of protection of this utility model is not limited to the specific embodiments described below.

[0027] refer to Figure 1-5 A structurally stable drilling arm includes a boom 11, a connecting frame 51, and an adjustment device. The adjustment device is connected to the boom 11 and the connecting frame 51 respectively. The adjustment device includes a support plate 12, a movable seat, a second angle adjustment seat, a first connecting rod 33, and a second connecting rod 35.

[0028] The support plate 12 is fixedly connected to the upper arm 11. The movable seat includes a first structural plate 21, a second structural plate 22, a support shaft 23, and a connecting plate 24. The connecting plate 24 is fixedly connected to both the first structural plate 21 and the second structural plate 22. The connecting plate 24 includes a surrounding support section 25 and an extended support section 26. The surrounding support section 25 surrounds the outside of the support shaft 23, and the extended support section 26 extends towards the second angle adjustment shaft 43. The first structural plate 21 is fixedly connected to a bushing 27 through which the second angle adjustment shaft 43 passes. The extended support section 26 is fixedly connected to the bushing 27, enabling the bushing 27 and the connecting plate 24 to support each other. This achieves mutual fixation of the first structural plate 21, the connecting plate 24, the bushing 27, and the second structural plate 22, effectively improving the structural reliability of the movable seat.

[0029] A first angle adjusting plate 31 is fixedly connected to the first structural plate 21, and a first angle adjusting shaft 32 is fixedly connected to the support plate 12. The first angle adjusting plate 31 and the first angle adjusting shaft 32 are rotatably connected. A first connecting rod 33 is rotatably connected to the support plate 12, and a second connecting rod 35 is rotatably connected to the connecting plate 24. A drive shaft 36, which is rotatably connected to the second connecting rod 35, is fixedly connected to the first connecting rod 33. A first angle driving component is provided between the upper arm 11 and the drive shaft 36. The first angle driving component is a first hydraulic cylinder 37, whose two ends are rotatably connected to the drive shaft 36 and the upper arm 11, respectively. When the first hydraulic cylinder 37 extends and retracts, it can drive the drive shaft 36 and the first connecting rod 33 to rotate, thereby realizing the function of driving the movable seat to adjust the pitch angle. The middle part of the first connecting rod 33 is provided with a curved section 34 that bends away from the first angle adjusting shaft 32. An extension plate 13 is fixedly connected to the upper arm 11, and the support plate 12 fits against the extension plate 13. The first angle adjusting shaft 32 passes through the extension plate 13.

[0030] A support shaft 23 is rotatably connected to the first structural plate 21 and the second structural plate 22, and is fixedly connected to the connecting frame 51. The extension direction of the support shaft 23 coincides with the extension direction of the boom 11, and the connecting frame 51 is located at the end of the support shaft 23 away from the boom 11. The second angle adjustment seat includes a side plate 41 and a second angle adjustment plate 42. The side plate 41 is fixedly connected to the connecting frame 51, and the second angle adjustment plate 42 is fixedly connected to the side plate 41. A second angle adjustment shaft 43 is provided between the first structural plate 21 and the second structural plate 22, and both ends of the second angle adjustment shaft 43 are fixedly connected to the first structural plate 21 and the second structural plate 22, respectively. A second angle driving component is provided between the second angle adjustment seat and the second angle adjustment shaft 43. The second angle driving component is a second hydraulic cylinder 44, whose two ends are rotatably connected to the second angle adjustment plate 42 and the second angle adjustment shaft 43, respectively. When the second cylinder 44 extends and retracts, it drives the second angle adjustment plate 42 and the side plate 41 to move. The side plate 41 drives the connecting frame 51 and the support shaft 23 to rotate, thereby realizing the function of driving the connecting frame 51 and the support shaft 23 to rotate around the support shaft 23.

[0031] This embodiment has the following advantages:

[0032] The boom 11 is used to connect to the drilling rig chassis, and the connecting frame 51 is used to connect to the drilling tools. A first angle drive unit drives the first structural plate 21, the second structural plate 22, and the first angle adjusting plate 31 to rotate on the first angle adjusting shaft 32, causing the support shaft 23, the connecting frame 51, and the drilling tools to rotate around the first angle adjusting shaft 32, thus enabling the drilling tools to adjust their angle around the first angle adjusting shaft 32. A second angle drive unit pushes the second angle adjusting seat to move, causing the second angle adjusting seat to move around the support shaft 23, thereby driving the connecting frame 51, the support shaft 23, and the drilling tools to rotate around the support shaft 23, thus enabling the drilling tools to adjust their angle in different directions.

[0033] The support shaft 23 is located in the extension direction of the boom 11, which ensures that the drill bit of the connecting frame 51 always passes through the extension direction of the boom 11 during rotation, avoids the drill bit and boom 11 being offset, effectively reduces the torque generated by the drill bit on the boom 11, and improves the structural stability of the boom 11, thus achieving the advantage of better structural stability of the drilling rig boom.

[0034] A first angle adjustment plate 31, rotatably connected to a first angle adjustment shaft 32, is installed on the first structural plate 21, enabling adjustment of the drill bit's pitch angle. The drill bit needs to adjust its pitch angle to achieve horizontal and vertical drilling methods, requiring a relatively large adjustment angle. Therefore, by placing the first angle adjustment plate 31 and the first angle adjustment shaft 32 at the end of the adjustment device near the boom 11, the torque on the boom 11 is reduced when making large adjustments to the pitch angle. Thus, placing the first angle adjustment shaft 32 at the end of the adjustment device near the boom 11 effectively ensures the reliability of the drill arm when the drill bit is drilling in different methods.

[0035] The drive shaft 36 drives the movable seat to move via the second connecting rod 35, thereby adjusting the pitch angle. During the movement of the drive shaft 36 and the movable seat, the second connecting rod 35 can adapt to the angle changes of the first connecting rod 33 and the movable seat, enabling the drive shaft 36 to drive the movable seat to rotate within a wider angle range. This increases the travel of the movable seat's pitch angle and facilitates angle adjustment between horizontal and vertical drilling methods.

[0036] The middle part of the first link 33 bends away from the first angle adjustment shaft 32 to prevent the first link 33 from colliding with the first angle adjustment shaft 32 during rotation, thus ensuring the rotation range of the first link 33 and thereby ensuring the pitch angle adjustment range of the movable seat.

[0037] The support section 25 surrounds the outside of the support shaft 23, providing stable support for the support shaft 23 and increasing its stability. The extended support section 26 extends closer to the second angle adjustment shaft 43, connecting the materials of the first structural plate 21 and the second structural plate 22 at the second angle adjustment shaft 43, thus increasing the overall structural strength of the movable seat and improving its structural stability.

[0038] The extension plate 13 increases the contact area between the boom 11 and the support plate 12, making the connection between the support plate 12 and the boom 11 more stable. The first angle adjustment shaft 32 passes through the extension plate 13, further enhancing the structural stability between the adjustment device and the boom 11, ensuring that the first angle adjustment shaft 32 can withstand greater pressure when adjusting the drill bit angle.

[0039] Based on the disclosure and teachings of the above specification, those skilled in the art can make changes and modifications to the above embodiments. Therefore, this utility model is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the utility model should also fall within the protection scope of the claims of this utility model. Furthermore, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on the utility model.

Claims

1. A structurally stable drilling arm, comprising a boom (11), a connecting frame (51), and an adjusting device, wherein the adjusting device is connected to the boom (11) and the connecting frame (51) respectively, characterized in that: The adjustment device includes a support plate (12), a movable seat, and a second angle adjustment seat. The support plate (12) is fixedly connected to the upper arm (11). The movable seat includes a first structural plate (21), a second structural plate (22), a support shaft (23), and a connecting plate (24). The connecting plate (24) is fixedly connected to the first structural plate (21) and the second structural plate (22) respectively. The first structural plate (21) is fixedly connected to a first angle adjustment plate (31). The support plate (12) is fixedly connected to a first angle adjustment shaft (32). The first angle adjustment plate (31) is rotatably connected to the first angle adjustment shaft (32). The support shaft (23) is rotatably connected to the first structural plate (21) and the second structural plate (22). The support shaft (23) is fixedly connected to a connecting frame (51). The extension direction of the support shaft (23) coincides with the extension direction of the upper arm (11). The connecting frame (51) is located at the end of the support shaft (23) away from the upper arm (11).

2. The structurally stable drilling arm according to claim 1, characterized in that: The second angle adjustment seat includes a side plate (41) and a second angle adjustment plate (42). The side plate (41) is fixedly connected to the connecting frame (51), and the second angle adjustment plate (42) is fixedly connected to the side plate (41).

3. The structurally stable drilling arm according to claim 2, characterized in that: A second angle adjustment shaft (43) is provided between the first structural plate (21) and the second structural plate (22), and the two ends of the second angle adjustment shaft (43) are fixedly connected to the first structural plate (21) and the second structural plate (22) respectively.

4. The structurally stable drilling arm according to claim 3, characterized in that: A second angle driving component is provided between the second angle adjusting seat and the second angle adjusting shaft (43). The second angle driving component is a second oil cylinder (44) whose two ends are respectively rotatably connected to the second angle adjusting plate (42) and the second angle adjusting shaft (43).

5. The structurally stable drilling arm according to claim 1, characterized in that: The adjustment device further includes a first connecting rod (33) and a second connecting rod (35). The first connecting rod (33) is rotatably connected to the support plate (12), and the second connecting rod (35) is rotatably connected to the connecting plate (24). The first connecting rod (33) is fixedly connected to a drive shaft (36) that is rotatably connected to the second connecting rod (35). A first angle drive member is provided between the upper arm (11) and the drive shaft (36).

6. The structurally stable drilling arm according to claim 5, characterized in that: The first angle driving component is a first oil cylinder (37) whose two ends are respectively rotatably connected to the drive shaft (36) and the boom (11).

7. The structurally stable drilling arm according to claim 5, characterized in that: The first connecting rod (33) has a curved section (34) in the middle that bends away from the first angle adjustment shaft (32).

8. The structurally stable drilling arm according to claim 1, characterized in that: The connecting plate (24) includes a surrounding support section (25) and an extended support section (26), the surrounding support section (25) surrounding the outside of the support pivot (23), and the extended support section (26) extending toward the second angle adjustment axis (43).

9. The structurally stable drilling arm according to claim 1, characterized in that: The upper arm (11) is fixedly connected to an extension plate (13), the support plate (12) is in contact with the extension plate (13), and the first angle adjustment shaft (32) passes through the extension plate (13).

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