CN102704832A - Rotary drilling rig - Google Patents

Abstract

The invention discloses a rotary drilling rig, the rotary drilling rig comprises a mast (1) and a power head (2), the power head (2) is provided with a mounting bracket (21), and the mast (1) is provided with On the sliding frame (11), the rotary drilling rig further includes a connecting bracket (3), and the sliding frame (11) and the installation bracket (21) are connected through the connecting bracket (3). Wherein, one or more connecting brackets (3) can be provided as required. The rotary drilling rig of the present invention is simple in structure and easy to operate. On the basis of the required center distance (a) between the mast (1) and the power head (2), it can be installed or removed by adding the connecting bracket (3 ) to adjust the required center distance (a), so as to increase the overall stability of the rotary drilling rig when it is working, and at the same time reduce the reaction torque acting on the mast guide rail, which is very practical.

Description

Rotary Drilling Rig

technical field

The invention relates to a rotary drilling rig, in particular to a rotary drilling rig with adjustable center distance between a mast and a power head.

Background technique

Accompanying drawing 1 is the structure diagram of the rotary drilling rig according to the prior art. As shown in Figure 1, the rotary drilling rig has a foldable mast 1 that can rise and fall by itself. The mast 1 can be stacked on the crawler vehicle 6 of the rotary drilling rig in the non-working state for transportation, and in the working state, it is driven by the thrust cylinder. For example, a hydraulic cylinder pushes and erects and the position can be adjusted by the luffing mechanism 5 . An anchor frame 4 is installed on the top of the mast 1, and the rotary drilling rig operates the wire rope through its hoisting system. The wire rope is set to pass through the pulley on the anchor frame 4 and pull the drill pipe in the vertical direction. The drill rod thereby manipulates the drill bit 7 to carry out the drilling operation. During this process, the power head 2 bears the reaction force of torsion and pressure. However, when this kind of rotary drilling rig encounters more complicated working conditions, such as when it is necessary to replace drill bits 7 of different sizes for drilling operations, in order to adjust the center of gravity of the rotary drilling rig, it is necessary to adjust the distance between the drill rod and the mast. The distance between them makes the power head 2 closer to or farther away from the mast 1, so that the whole structure of the rotary drilling rig is more stable during work, and the reaction torque to the mast guide rail is reduced.

At this time, in order to make the power head 2 closer to or away from the mast 1, it is necessary not only to replace the anchor frame 4 of suitable size or to make the upper pulley of the anchor frame 4 in a suitable position, but also to make the distance between the power head 2 and the mast 1 The distance can be changed. However, in the prior art shown in FIG. 2 , the power head 2 and the mast 1 are fixedly connected together by two connecting pins, that is to say, the distance cannot be changed.

Contents of the invention

In view of the above defects or deficiencies in the prior art, the object of the present invention is to provide a rotary drilling rig, which can conveniently adjust the distance between the power head and the mast.

In order to achieve the above object, the present invention provides a rotary drilling rig, the rotary drilling rig includes a mast and a power head, the power head is provided with a mounting bracket, and the mast is provided with a sliding frame. In addition, the rotary drilling rig also A connection bracket is included, and the sliding frame is connected with the installation bracket through the connection bracket to adjust the center distance between the power head and the mast.

Preferably, the connecting bracket may include a connecting pin, a body and a mounting portion extending outward from the body, and the mounting portion is provided with a mounting hole adapted to the connecting pin.

Further, there may be two installation parts on each side of the connection bracket, and the two installation parts are respectively formed on the upper end part and the lower end part of the connection bracket.

Preferably, the installation part may be provided with a plurality of installation holes arranged in the horizontal direction.

Preferably, the above-mentioned rotary drilling machine may include one connecting bracket, one side of which is connected to the installation bracket, and the other side is connected to the sliding frame.

Preferably, the above-mentioned rotary drilling machine may include a plurality of connecting brackets, and the plurality of connecting brackets are sequentially connected laterally.

Through the above technical solution, the rotary drilling rig with adjustable center distance according to the present invention is simple in structure and easy to operate. On the basis of the required center distance between the mast and the power head, it can be installed or removed by adding the connecting bracket , to adjust the required center distance, so as to increase the stability of the rotary drilling rig when it is working, and at the same time reduce the reaction torque acting on the mast guide rail, which has strong practicability.

Other features and advantages of the present invention will be described in detail in the following detailed description.

Description of drawings

The accompanying drawings are used to provide a further understanding of the present invention, and constitute a part of the description, together with the following specific embodiments, are used to explain the present invention, but do not constitute a limitation to the present invention. In the attached picture:

Fig. 1 is a schematic structural view of a rotary drilling rig according to the prior art;

Fig. 2 is a schematic diagram of the connection structure between the mast and the power head in the rotary drilling rig according to the prior art;

Fig. 3 is a schematic diagram of the connection structure between the mast and the power head in a rotary drilling rig according to a preferred embodiment of the present invention;

Fig. 4 is a schematic diagram of the connection structure between the mast and the power head in the rotary drilling rig according to another preferred embodiment of the present invention.

Explanation of reference signs

1 mast 2 power head

3 Connection Bracket 4 Hanging Anchor

5 luffing mechanism 6 tracked vehicle

7 Drill bit 11 Carriage

21 Mounting bracket 31 Connecting pin

32 Body 33 Installation

34 Mounting hole OO’ Central axis of mast

HH’ center axis of power head a center distance

Detailed ways

Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

In the present invention, unless stated to the contrary, the used orientation words such as "up, down, and sideways" are generally for the directions shown in the drawings or for vertical, perpendicular or gravity directions. Words are used to describe the mutual positional relationship of each component. The term "center distance" in this specification specifically refers to the minimum distance or level between the central axis HH' of the power head and the central axis OO' of the mast when the mast 1 and the power head 2 are in the vertical working state shown in the drawings. distance.

As shown in Figure 3, the present invention provides a rotary drilling rig, the rotary drilling rig includes a mast 1 and a power head 2, the power head 2 is provided with a mounting bracket 21, and the mast 1 is provided with a carriage 11, Specifically, the carriage 11 is generally sleeved on the mast guide rail. In addition, the rotary drilling rig also includes a connecting bracket 3 through which the sliding frame 11 and the mounting bracket 21 are connected to adjust the center distance between the power head 2 and the mast 1 size. In this way, compared with the rotary drilling rig according to the prior art shown in FIG. 2 , the sliding frame 11 and the mounting bracket 21 are no longer directly connected, but a connecting bracket 3 is added between the mast 1 and the power head 2, make the two indirectly connected together. Through this connection structure and installation method, that is, by installing or dismounting the connecting bracket 3, the minimum distance between the mast central axis OO' in the vertical direction and the power head central axis HH' shown in Fig. 3 can be changed, That is, the center distance a. As a general idea, when a larger-sized drill bit is operating, a connecting bracket 3 can be added between the mast 1 and the power head 2, so that the working radius (the power head 2 is far away from the center of rotation on the crawler vehicle 6 shown in Figure 1 radius distance) becomes larger. And when it is necessary to replace a drill bit with a smaller size for operation, the working radius can be reduced by changing the center distance a, for example, by removing the connecting bracket 3, so as to increase the stability of the whole machine when the rotary drilling rig is operating, and reduce the Reaction torque to mast rails during operation.

Referring to FIG. 3 , the connecting bracket 3 may include a connecting pin 31 , a body 32 and a mounting portion 33 extending laterally from the body 32 , and the mounting portion 33 is provided with a mounting hole adapted to the connecting pin 31 34. The installation part 33 is used to install the connection bracket 3 on other devices, and can be implemented in various structures or connection methods. For example, through the connection method of the connection pin 31 in this embodiment, the connection bracket 3 can be stably connected to the sliding frame 11 and the installation bracket 21 respectively. Wherein, each side of the connection bracket 3 preferably has at least two installation portions 33 , and the two installation portions 33 are respectively formed on the upper end and the lower end of the connection bracket 3 . There are preferably two mounting portions 33 on each side of the connecting bracket 3, which is not only for the consistency of the sliding frame 11 and the mounting bracket 21, but also for the stability of the connection. Because when there is only one mounting portion 33 on one side, if a pin shaft connection is adopted, a rotatable hinge rather than a firm connection structure may be formed. Of course, more than two mounting portions 33 can also be used on one side of the connecting bracket 3 , which requires additional mounting holes on the sliding frame 11 and the mounting bracket 21 to match.

In the connection structure of a preferred embodiment shown in Figure 3, only one connection bracket 3 is provided, that is, the rotary drilling rig with adjustable center distance includes one connection bracket 3, and one side of the connection bracket 3 is connected to The other side of the mounting bracket 21 is connected to the sliding frame 11 . In this way, the center distance a is adjusted through the installation or removal of the connecting bracket, but there are only two cases of the center distance in this way, that is, the center distance after adding the one connecting bracket 3 and the distance after removing the one connecting bracket 3 Center distance. But this can already meet the operating requirements of rotary drilling rigs in general.

However, in order to best realize the adjustable center distance of the rotary drilling rig, the mounting portion 33 may preferably be provided with a plurality of mounting holes 34 arranged substantially along the horizontal direction. In this way, the connecting pin 31 can be connected to the sliding frame 11 or the mounting bracket 21 through the mounting holes 34 at different horizontal positions according to the required center distance a. Therefore, by providing a plurality of mounting holes 34 in the horizontal direction on the connecting bracket 3 , the size of the center distance a can be continuously adjusted by selecting the mounting holes 34 . In this case, only one connecting bracket 3 is added, which does not affect the connection stability. Preferably, in order to ensure the firmness of the mounting part 33, measures such as increasing its thickness can be taken.

Certainly, those skilled in the art should know that there are various structural forms to realize the continuous adjustment of the center distance a. For example, as an alternative, the rotary drilling rig according to the present invention may include a plurality of connecting brackets 3, and the plurality of connecting brackets 3 are connected side by side in sequence, as shown in FIG. The mounting bracket 3 is described above. In other words, referring to FIG. 3 , on the basis that a single connecting bracket 3 has a specific width, when the center-to-center distance changes greatly, a plurality of connecting brackets 3 are laterally connected to each other to form a connecting bracket group, and finally the connecting bracket group The leftmost and rightmost mounting parts 33 are connected to the sliding frame 11 and the mounting bracket 21 through connecting pins 31, respectively. In this way, by selecting the number of connecting brackets 3, multiple options or so-called continuous adjustment of the center distance can be realized. However, the disadvantage of this method is that there are too many connecting parts, which may lead to insufficient connection stability and reliability. Those skilled in the art can think of ways such as adding transverse ribs or bottom bars to enhance structural stability. In addition, the size of the center distance can also be adjusted by adding a connecting plate between the mounting part 33 of the connecting bracket 3 and the sliding frame 11 or the mounting bracket 21. Examples are given one by one, but in general it still belongs to the category of connecting brackets provided between the sliding frame 11 and the mounting bracket 21, and does not depart from the scope of protection of the present invention. Moreover, when adopting the above method of adding connecting plates, the stability and reliability of the connecting structure should also be taken into consideration.

The preferred embodiment of the present invention has been described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the specific details of the above embodiment, within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, These simple modifications all belong to the protection scope of the present invention.

In addition, it should be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable way if there is no contradiction. The combination method will not be described separately.

In addition, various combinations of different embodiments of the present invention can also be combined arbitrarily, as long as they do not violate the idea of the present invention, they should also be regarded as the disclosed content of the present invention.

Claims (6)

1. rotary drilling rig; This rotary drilling rig comprises mast (1) and unit head (2), and this unit head (2) is provided with mounting bracket (21), and said mast (1) is provided with balladeur train (11); It is characterized in that; This rotary drilling rig also comprises and connects support (3), and to be connected support (3) continuous through said between said balladeur train (11) and the said mounting bracket (21), big or small with the center to center distance of regulating between said unit head (2) and the said mast (1).

2. rotary drilling rig according to claim 1; Wherein, Said connection support (3) comprises connecting pin (31), body (32) and the installation portion (33) that extends outward from this body (32), and this installation portion (33) is provided with the installing hole (34) adaptive with said connecting pin (31).

3. rotary drilling rig according to claim 2 wherein, has two said installation portions (33) in each side of said connection support (3), and these two installation portions (33) are respectively formed on the upper end and bottom of said connection support (3).

4. rotary drilling rig according to claim 2, wherein, said installation portion (33) is provided with a plurality of installing holes (34) that along continuous straight runs is arranged.

5. according to any described rotary drilling rig in the claim 1 to 4, wherein, this rotary drilling rig comprises a said connection support (3), and a side of this connection support (3) is connected to said mounting bracket (21), and opposite side is connected to said balladeur train (11).

6. according to any described rotary drilling rig in the claim 1 to 4, wherein, this rotary drilling rig comprises a plurality of said connection supports (3), and these a plurality of connection supports (3) connect on side direction successively.

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