Drill rod replacing device

Abstract

The utility model discloses a drill rod replacing device which comprises a swing arm with one end hinged to a main arm of a drilling machine, a vertical supporting column rotationally connected with the other end of the swing arm, an upper rotating disc fixedly arranged on the upper portion of the supporting column and a lower rotating disc fixedly arranged on the lower portion of the supporting column. A positioning hole used for being matched with the bottom of a drill rod is formed in the lower rotating disc, and at least one C-shaped notch used for being matched with a clamping sleeve on the drill rod is formed in the position, close to the edge, of the upper rotating disc. The inner portion of the notch is an arc surface, the diameter of the arc surface is D, the width of the portion, close to the edge of the upper rotary disc, of the notch is b, the diameter of the drill rod is d2, the diameter of the clamping sleeve is d1, and the formula is d2lt. Blt; d1lt; and D, preparing. A standby drill rod can be placed on the upper rotating disc and the lower rotating disc during punching operation, alignment of the drill rod to be replaced and a power head of the drilling machine is achieved through swinging of the swing arm and rotation of the upper rotating disc and the lower rotating disc, and therefore the replacement time of the drill rod can be shortened, and the working efficiency of the drilling machine is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of well drilling machinery, in particular to a drill rod changing device. Background Art

[0002] A drilling rig is a crucial piece of machinery used for drilling underground. First, the drill pipe is driven into the ground using the power head on the rig's main boom. Drilling is then paused, and the rig's gripper clamps the top of the drill pipe. The power head then detaches from the pipe, and a crane hoists another pipe. The two pipes are connected end to end. After the gripper is released, the power head connects to the second pipe and drilling continues, repeating the cycle. Because a crane is required for each drill pipe change, transporting and aligning the pipe takes significant time, reducing drilling efficiency. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a drill rod changing device, which is used to solve the problem that the drill rig consumes a long time and has low working efficiency when changing the drill rod.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0005] A drill rod changing device, comprising a swing arm hinged to the main arm of a drilling rig at one end, a vertical support column rotatably connected to the other end of the swing arm, an upper turntable fixedly arranged on the upper part of the support column, and a lower turntable fixedly arranged on the lower part of the support column; the lower turntable is provided with a positioning hole for cooperating with the bottom of the drill rod, and the upper turntable is provided with at least one C-shaped notch near the edge for cooperating with a ferrule on the drill rod, and the notch is connected to the edge of the upper turntable; the inner part of the notch is an arc surface, the diameter of the arc surface is D, the width of the notch near the edge of the upper turntable is b, the diameter of the drill rod is d2, and the diameter of the ferrule is d1, then: d2 <b<d1<D。

[0006] Furthermore, a first hydraulic cylinder is provided between the swing arm and the main arm, one end of the first hydraulic cylinder is hinged to the main arm, and the other end is hinged to the swing arm.

[0007] Furthermore, a vertical guide plate is fixedly provided on the upper side of the lower turntable around the positioning hole, and the side of the guide plate close to the positioning hole is an inclined surface with the top inclined outward.

[0008] Furthermore, a C-shaped baffle is fixedly provided on the upper turntable at the edge of the notch close to the center of the upper turntable.

[0009] Furthermore, there are two swing arms arranged upper and lower, and the upper turntable and the lower turntable are respectively close to the corresponding swing arms.

[0010] Furthermore, a vertical connecting rod is provided between the two swing arms, the upper end of the connecting rod is fixedly connected to the upper swing arm, and the lower end of the connecting rod is fixedly connected to the lower swing arm.

[0011] Furthermore, a turntable is provided between the swing arm and the lower turntable, one end of which is rotatably connected to the lower turntable, and second hydraulic cylinders are provided on both sides of the center of the lower turntable, one end of one of the second hydraulic cylinders is hinged to the lower turntable, and the other end is hinged to the turntable; one end of the other second hydraulic cylinder is hinged to the turntable, and the other end is hinged to the swing arm.

[0012] The positive effects of this utility model are:

[0013] The utility model comprises a swing arm, a support column, an upper turntable, and a lower turntable. The lower turntable is provided with a positioning hole, and the upper turntable is provided with a notch. During drilling operations, a spare drill rod can be placed on the upper and lower turntables. The swing arm swings and the upper and lower turntables rotate to align the drill rod to be replaced with the drill rig's power head. This shortens the time required to replace the drill rod and improves the working efficiency of the drilling rig. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a working diagram of the utility model;

[0015] Figure 2 yes Figure 1 A partial enlarged view of the middle part I;

[0016] Figure 3 yes Figure 1 A partial enlarged view of Part II;

[0017] Figure 4 yes Figure 1 A-direction view;

[0018] Figure 5 This is a schematic diagram of the connection between the second hydraulic cylinder and the lower turntable;

[0019] 1. Upper turntable; 2. Clamping sleeve; 3. Support column; 4. Guide plate; 5. Lower turntable; 6. Swing arm; 7. First hydraulic cylinder; 8. Connecting rod; 9. Main arm; 10. Drill pipe; 11. Notch; 12. Baffle; 13. Second hydraulic cylinder; 14. Turntable. DETAILED DESCRIPTION

[0020] Example 1

[0021] like Figures 1 to 5As shown, a drill rod changing device includes a swing arm 6 hinged to the main arm 9 of the drilling rig at the right end, a vertical support column 3 rotatably connected to the left end of the swing arm 6, an upper turntable 1 fixedly arranged on the upper part of the support column 3, and a lower turntable 5 fixedly arranged on the lower part of the support column 3. The upper turntable 1 and the lower turntable 5 are both arranged horizontally, and the upper turntable 1 and the lower turntable 5 are both circular. The lower turntable 5 is provided with positioning holes for matching with the bottom of the drill rod 10, and there are three positioning holes. The upper turntable 1 is provided with three C-shaped notches 11 near the edge for matching with the ferrule 2 on the drill rod 10. Adjacent notches 11 are spaced 90 degrees apart in the circumferential direction. The three notches 11 correspond one-to-one to the three positioning holes, and the notches 11 are connected to the edge of the upper turntable 1. The inner portion of the notch 11 is an arc surface with a diameter of D. The width of the notch 11 near the edge of the upper turntable 1 is b. The diameter of the drill rod 10 is d2, and the diameter of the ferrule 2 is d1. Then, d2 satisfies: <b<d1<D。

[0022] There are two swing arms 6 arranged in an upper and lower manner, and the upper turntable 1 and the lower turntable 5 are respectively close to the corresponding swing arms 6. A vertical connecting rod 8 is provided between the two swing arms 6, the upper end of the connecting rod 8 is fixedly connected to the upper swing arm 6, and the lower end of the connecting rod 8 is fixedly connected to the lower swing arm 6.

[0023] A first hydraulic cylinder 7 is provided between each swing arm 6 and the main arm 9 . One end of the first hydraulic cylinder 7 is hinged to the main arm 9 , and the other end is hinged to the swing arm 6 .

[0024] A turntable 14 is provided between the swing arm 6 and the lower turntable 5 at one end, and a second hydraulic cylinder 13 is provided on both sides of the center of the lower turntable 5. One end of one of the second hydraulic cylinders 13 is hinged to the lower turntable 5, and the other end is hinged to the outer end of the turntable 14; one end of the other second hydraulic cylinder 13 is hinged to the middle of the turntable 14, and the other end is hinged to the swing arm 6.

[0025] While the drilling rig's power head is operating, the crane lifts three drill rods 10 one by one. After each drill rod 10 enters the notch 11, it moves downward, inserting its bottom into the corresponding locating hole on the lower turntable 5. The ferrule 2 then enters the inner portion of the notch 10. Because d1 is greater than b, the drill rod 10 does not fall over. When a drill rod 10 needs to be replaced, the first hydraulic cylinder 7 is actuated, and the upper and lower turntables 1 and 5, driven by the swing arm 6, swing upward, moving them above the previously driven drill rod 10. The two second hydraulic cylinders 13 then activate, rotating the upper and lower turntables 1 and 5, positioning one of the drill rods 10 on the upper turntable 1 below the power head. The power head then moves downward, connecting with the corresponding drill rod 10. The power head 10 then drives the drill rod 10 upward, causing the ferrule 2 to move upward. The lower end of the drill rod 10 is removed from its corresponding locating hole, and the ferrule 3 is released from the notch. Then the first hydraulic cylinder 7 drives the swing arm 6 to swing, so that the drill rod 10 is separated from the gap 11. Afterwards, this drill rod 10 is connected with the drill rod 10 that was previously driven into the ground, and the drilling operation is continued.

[0026] Since the spare drill rod 10 can be placed on the upper turntable 1 and the lower turntable 5 while the drilling operation is in progress, the drill rod 10 to be replaced can be aligned with the power head by swinging the swing arm 6 and rotating the upper turntable 1 and the lower turntable 5, thereby reducing the replacement time of the drill rod 10 and improving the working efficiency of the drilling rig.

[0027] Example 2

[0028] like Figure 3 As shown, the difference between this embodiment and embodiment 1 is that:

[0029] Four vertical triangular guide plates 4 are fixedly provided on the upper side of the lower turntable 5 around the positioning holes. The side of the guide plate 4 close to the positioning hole is a slope with the top inclined outwards.

[0030] When the lower end of the drill rod 10 moves downward, under the action of the guide plate 4, the lower end of the drill rod 10 can easily enter the positioning hole.

[0031] Example 3

[0032] like Figure 4 As shown, the difference between this embodiment and embodiment 2 is that:

[0033] A C-shaped baffle 12 is fixedly provided on the upper turntable 1 at the edge of the notch 11 close to the center of the upper turntable 1 . The shape of the baffle 10 is consistent with the shape of the inner portion of the notch 11 .

[0034] The above-mentioned embodiments are described in a relatively detailed and specific manner, expressing preferred embodiments of the present invention. They are only used to illustrate the technical ideas and features of the present invention. Their purpose is to enable those skilled in the art to understand the contents of the present invention and implement them accordingly. However, they are not limited to the present invention alone, and the patent scope of the present invention cannot be limited solely by these embodiments. That is, any equivalent changes or modifications made to the spirit disclosed by the present invention, for researchers or technicians in this field, without departing from the structure of the present invention, local improvements within the system and changes and conversions between subsystems, etc., are still within the patent scope of the present invention.

Claims

1. A drill rod replacement device, characterized in that: The invention comprises a swing arm (6) hinged to a main arm (9) of a drilling rig at one end, a vertical support column (3) rotatably connected to the other end of the swing arm (6), an upper turntable (1) fixedly arranged on the upper part of the support column (3), and a lower turntable (5) fixedly arranged on the lower part of the support column (3); the lower turntable (5) is provided with a positioning hole for matching with the bottom of a drill rod (10); the upper turntable (1) is provided with at least one C-shaped notch (11) near the edge for matching with a sleeve (2) on the drill rod (10); the notch (11) is connected to the edge of the upper turntable (1); the inner part of the notch (11) is a circular arc surface, the diameter of the circular arc surface is D, the width of the notch (11) near the edge of the upper turntable (1) is b, the diameter of the drill rod (10) is d2, and the diameter of the sleeve (2) is d1, then: d2 <b<d1<D。 2. A drill rod changing device according to claim 1, characterized in that: A first hydraulic cylinder (7) is provided between the swing arm (6) and the main arm (9); one end of the first hydraulic cylinder (7) is hinged to the main arm (9), and the other end is hinged to the swing arm (6).

3. The drill rod changing device according to claim 1, characterized in that: A vertical guide plate (4) is fixedly arranged on the upper side of the lower turntable (5) around the positioning hole, and the guide plate (4) has a slope with the top inclined outward on the side close to the positioning hole.

4. The drill rod replacement device according to claim 1, characterized in that: A C-shaped baffle (12) is fixedly arranged on the upper surface of the upper turntable (1) at the edge of the notch (11) close to the center of the upper turntable (1).

5. The drill rod replacement device according to claim 1, characterized in that: There are two swing arms (6) arranged one above the other, and the upper turntable (1) and the lower turntable (5) are respectively close to the corresponding swing arms (6).

6. A drill rod replacement device according to claim 5, characterized in that: A vertical connecting rod (8) is provided between the two swing arms (6), the upper end of the connecting rod (8) is fixedly connected to the upper swing arm (6), and the lower end of the connecting rod (8) is fixedly connected to the lower swing arm (6).

7. The drill rod replacement device according to claim 1, characterized in that: A rotating plate (14) is provided between the swing arm (6) and the lower rotating plate (5), one end of which is rotatably connected to the lower rotating plate (5). Second hydraulic cylinders (13) are provided on both sides of the center of the lower rotating plate (5), one end of one of the second hydraulic cylinders (13) is hinged to the lower rotating plate (5), and the other end is hinged to the rotating plate (14); one end of the other second hydraulic cylinder (13) is hinged to the rotating plate (14), and the other end is hinged to the swing arm (6).

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