WO2012028006A1

WO2012028006A1 - Rotary drilling rig and transmission device for power head thereof

Info

Publication number: WO2012028006A1
Application number: PCT/CN2011/075371
Authority: WO
Inventors: 赵锡鹏; 于卓伟; 吴方晓
Original assignee: 湖南三一智能控制设备有限公司; 北京市三一重机有限公司
Priority date: 2010-09-03
Filing date: 2011-06-07
Publication date: 2012-03-08
Also published as: CN101956524A; CN101956524B

Abstract

A rotary drilling rig and a transmission device for a power head thereof are provided. The transmission device for the power head has a key sleeve body (1), the inner wall of which is provided with a plenty of key slots (11). Each key slot (11) is matched with a torque-transmitting key (2).The upper end of the torque-transmitting key (2) is provided with a first connecting part, and the lower end thereof is provided with a second connecting part. The inner wall of the upper end of the key sleeve body (1) is provided with a supporting sleeve (3), and the inner wall of the lower end of the key sleeve body (1) is provided with a supporting ring (4). The supporting sleeve (3) is connected with the first connecting part, and the supporting ring (4) is connected with the second connecting part. The device can not only improve the working safety and reliability, but also can facilitate manufacture, and effectively reduce the manufacturing cost.

Description

Rotary drilling rig and its power head transmission

This application claims priority to Chinese Patent Application No. 201010273119.8, entitled "Rotary Drilling Rig and Its Power Head Transmission", filed on September 3, 2010, the entire contents of which are incorporated herein by reference. In the application. Technical field

The invention relates to the technical field of rotary drilling rigs, in particular to a power head transmission device. Furthermore, the invention relates to a rotary drilling rig comprising the power head transmission. Background technique

With the rapid development of China's construction industry, the demand for pile-driving machinery, especially rotary drilling rigs, is also growing.

Please refer to FIG. 1 and FIG. 2 . FIG. 1 is a schematic structural view of a power head transmission device in the prior art; FIG. 2 is a top view of the power head transmission device in FIG. 1 .

As shown in FIG. 1 , the power head transmission device includes a key sleeve body 1′. The inner wall of the key sleeve body V is provided with a plurality of key grooves, and the key groove is equipped with a twist button 2′, and the upper end surface of the key sleeve body is connected with the top portion. The flange 3' has a bottom flange 4' attached to the lower end. As shown in Fig. 1 and Fig. 2, the twisting key 2' and the inner wall of the key sleeve body are provided with threaded through holes, so that the twist key 2' is fixedly connected to the key sleeve body by bolts 5'.

The basic working process of the power head transmission device is as follows: The power transmission device shown in FIG. 1 and FIG. 2 is set on the outside of the drill pipe, and the two sides of the transmission torque button 2' are in contact with the outer key of the drill pipe to transmit the rotation. Power, relying on the lower end of the twist button 2' to press the drill pipe press table to transmit the vertical downward pressure to the drill pipe, relying on the inner cylindrical surface of each of the twist button 2' to limit the radial freedom of the drill pipe to maintain The vertical working surface of the drill pipe is used to achieve the stability of the pressure bar, thereby achieving the construction purpose. When the power head transmits torque, the twist button 2' contacts the outer rod of the drill rod and is subjected to a reaction force. When the power head pressurizes the drill rod, the lower end surface of the twist button 2' is subjected to a reaction force from bottom to top.

The above prior art power head transmission has the following disadvantages:

First, the key sleeve body 1' needs to be bolted to the clutch housing, so the lubricating oil of the spline shaft in the clutch will leak out through the threaded through hole into the inner circumference of the key sleeve body, thereby causing serious Environmental pollution and waste of resources.

Secondly, during the construction process, the key sleeve body: the connecting bolt 5' between the r and the twisting key 2' will loosen, fall off and fatigue fracture under long-term vibration, and need to be shut down for repair, so the reliability of work Not high, and reduce work efficiency.

Thirdly, the key sleeve body r and the individual twisting keys 2' are fixedly connected by a plurality of rows of bolts y, so that the opening of the threaded holes and the tightening of the bolts y may cause waste of working hours; at the same time, the internal space of the key sleeve body V is limited, nor It is convenient to tighten the bolt y.

Fourth, in the manufacturing process of the drill pipe, it is difficult to ensure the straightness of the drill pipe and the uniformity of the distribution of the outer key of the drill pipe, thereby causing the twisting key 2' to be twisted or pressurized with the single key of the drill pipe outer key. The drill pipe is forced to cause damage in advance by a single button; and it is also difficult to control the radial degree of freedom of the drill pipe, causing the pressure bar to be unstable, and the bottom of the drill pipe steel pipe is damaged in advance.

Fifthly, a plurality of rows of compact bolt through holes are respectively formed on the twisting key 2' and the key sleeve body 1', which greatly reduces the fatigue strength of the twisting key 2' and the key sleeve body V, and the construction process is This produces microscopic cracks, which poses a serious safety hazard.

Sixth, the opening of the threaded through hole of the inner circumferential surface of the key sleeve body V is difficult to realize the process and accuracy requirements, such as the control of the center distance of the hole, etc., thereby causing great trouble for processing.

Summary of the invention

The technical problem to be solved by the present invention is to provide a power head transmission device, which can significantly improve the safety and reliability of work on the one hand, and is convenient to process and manufacture, and can effectively reduce the manufacturing cost; in addition, the device can avoid the environment. Pollution and waste of resources. Another technical problem to be solved by the present invention is to provide a rotary drilling rig including the power head transmission.

In order to solve the above technical problem, the present invention provides a power head transmission device, comprising a key sleeve body, the inner wall of the key sleeve body is provided with a plurality of key grooves, and each of the key grooves is equipped with a twist button; The upper end is provided with a first connecting portion, and the lower end is provided with a second connecting portion; the inner wall of the upper end of the key sleeve body is provided with a support sleeve, and the inner wall of the lower end of the key sleeve body is provided with a support ring; The first connecting portion is connected, and the support ring is connected to the second connecting portion.

Preferably, the twisting button comprises a key station, the first connecting portion is a first key handle protruding from an upper end surface of the key table; the lower end surface of the support sleeve is provided with a first boss, First boss and The gap between the inner walls of the key sleeve forms a first annular groove, and the first key handle is fitted in the first annular groove.

Preferably, the inner wall of the lower end portion of the key sleeve body is provided with a mounting groove in the circumferential direction, the support ring is disposed in the mounting groove, and the bottom side wall of the mounting groove supports the support ring.

Preferably, the twisting button comprises a key station, the second connecting portion is a second key handle protruding from the lower end surface of the key table; the upper end surface of the support ring is provided with a second boss, A gap between the second boss and the bottom wall of the mounting groove forms a second annular groove, and the second key handle is fitted in the second annular groove.

Preferably, the support ring is divided into arc segments in which at least three end faces are sequentially attached, and each of the arc segments is sequentially assembled into the mounting groove.

Preferably, in each of the arc segments, the two end faces of the arc having the smallest curvature are parallel to each other, and the arc segment is fixedly connected to the bottom sidewall of the mounting groove.

Preferably, the two sides of the twist button are beveled, and the two side walls of the keyway are inclined walls that cooperate with the corresponding inclined faces.

Preferably, the inclined wall has a gap between the corresponding inclined surface.

Preferably, an upper end portion of the outer wall of the support sleeve is provided with an inclined surface, and a gap between the inclined surface and an inner wall of the key body is filled with solder.

Further, in order to solve the above technical problems, the present invention also provides a rotary drilling rig comprising the power head transmission of any of the above.

On the basis of the prior art, the upper end of the twisting button of the power head transmission device provided by the present invention is provided with a first connecting portion, and the lower end thereof is provided with a second connecting portion; the inner wall of the upper end of the key sleeve body is provided a support sleeve, the inner wall of the lower end of the key sleeve body is provided with a support ring; the support sleeve is connected with the first connecting portion, and the support ring is connected with the second connecting portion, thereby connecting with the first connection through the support sleeve The cooperation of the part and the cooperation of the support ring and the second connecting portion are provided in the key sleeve body.

It can be seen from the above that, first, the twisting key and the key sleeve body are not connected by bolts, so the lubricating oil of the clutch spline shaft does not enter the inner circumference of the key sleeve body through the threaded through hole, thereby avoiding pollution of the environment and resources. waste. Secondly, the twisting key is arranged in the key sleeve through the support sleeve and the support ring, which changes the problems of looseness, falling off and fatigue fracture caused by the bolt connection, and no longer needs to be frequently stopped for repair, and the work reliability is significantly improved. And work efficiency has also improved. Third, The twisting key is disposed in the key sleeve through the support sleeve and the support ring, which changes the waste of working hours and the shortage of the assembly space caused by the bolt connection, thereby facilitating processing, manufacturing and assembly, and significantly reducing the cost. Fourthly, the twisting key is disposed in the key sleeve through the support sleeve and the support ring, so that it is not necessary to open a plurality of threaded through holes in the twisting key and the key sleeve body, thereby avoiding the fatigue strength of the twisting key and the key sleeve body. The effect is to ensure that the twist key and the key sleeve have sufficient structural strength and mechanical properties.

In summary, the power head transmission device provided by the invention can significantly improve the safety and reliability of the work on the one hand, and is convenient to process and manufacture, and can effectively reduce the manufacturing cost; in addition, the device can avoid environmental pollution and resource waste. .

The technical effects of the rotary drilling rig provided by the present invention are substantially the same as those of the above-described power head transmission, and will not be described herein. DRAWINGS

1 is a schematic structural view of a power head transmission device in the prior art;

Figure 2 is a plan view of the power head transmission of Figure 1;

3 is a schematic structural view of a power head transmission device according to an embodiment of the present invention;

Figure 4 is a cross-sectional view taken along line A-A of Figure 3;

Figure 5 is a schematic structural view of the key sleeve body of the power head transmission device of Figure 3;

Figure 6 is a front cross-sectional view of the key sleeve body of Figure 5;

Figure 7 is a schematic structural view of the transmission button of the power head transmission device of Figure 3;

Figure 8 is a front view of the twist key in Figure 7;

Figure 9 is a schematic structural view of the support sleeve of the power head transmission device of Figure 3;

Figure 10 is a front cross-sectional view of the support sleeve of Figure 9;

Figure 11 is a structural schematic view of the support ring of the power head transmission device of Figure 3;

Figure 12 is a front cross-sectional view of the support ring of Figure 11;

Figure 13 is a bottom plan view of the support ring of Figure 11;

Wherein, the correspondence between the component names in FIG. 1 and FIG. 2 is: a key sleeve body 1'; a key groove 1'1; a twist key 2'; a top flange 3'; a bottom flange 4'; The correspondence between the part names and the reference numerals in the bolt diagrams 3 to 13 is: Key sleeve body 1; keyway 11; inclined wall 111; mounting groove 12; process boss 13; transfer button 2; key table 21; first key handle 22; second key handle 23;

Support sleeve 3; first boss 31; inclined surface 32;

Support ring 4; second boss 41; arc with the smallest curvature 42.

detailed description

The core of the present invention is to provide a power head transmission device, which can significantly improve the safety and reliability of work on the one hand, and is convenient to process and manufacture, and can effectively reduce the manufacturing cost; in addition, the device can avoid environmental pollution and resources. waste. Another core of the present invention is to provide a rotary drilling rig including the power head transmission.

In order to make those skilled in the art better understand the technical solutions of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

Please refer to FIG. 3, FIG. 4, FIG. 5 and FIG. 6. FIG. 3 is a schematic structural view of a power head transmission device according to an embodiment of the present invention; FIG. 4 is a cross-sectional view taken along line AA of FIG. FIG. 6 is a front cross-sectional view of the key sleeve body of FIG. 5;

In one embodiment, the power head transmission device provided by the present invention comprises a key sleeve body 1 . As shown in FIG. 5 , the inner wall of the key sleeve body 1 is provided with a plurality of process bosses 13 and two adjacent process bosses. A keyway 11 is formed between each of the key grooves 11; on the basis of the prior art, as shown in FIG. 3, a support sleeve 3 is provided in the inner wall of the upper end of the key sleeve body 1, and the key sleeve body 1 is provided. The inner wall of the lower end is provided with a support ring 4, and the upper end of the twist button 2 is provided with a first connecting portion, and the lower end thereof is provided with a second connecting portion, and the supporting sleeve 3 is connected with the first connecting portion, the supporting ring 4 and the The second connection is connected. The twisting key 2 is provided in the key body 1 by the cooperation of the support sleeve 3 with the first connecting portion and the cooperation of the support ring 4 and the second connecting portion.

As can be seen from the above, first, the torque button 2 and the key sleeve body 1 are not connected by bolts, so that the lubricating oil of the clutch spline shaft does not enter the inner circumferential surface of the key sleeve body 1 through the threaded through hole, thereby avoiding Polluted environment and waste of resources. Secondly, the twisting button 2 is disposed in the key sleeve body 1 through the support sleeve 3 and the support ring 4, which changes the problems of looseness, shedding, fatigue fracture and the like caused by the bolt connection, and no longer needs to be frequently shut down for repair and work reliability. Significant improvements have been made and work efficiency has been improved. Third, the twist button 2 is disposed in the key body 1 through the support sleeve 3 and the support ring 4, and is changed. The waste of working hours and the lack of assembly space caused by the bolting connection make the processing, manufacturing and assembly convenient, and the cost is significantly reduced. Fourthly, the twisting key 2 is disposed in the key sleeve body 1 through the support sleeve 3 and the support ring 4, so that it is not necessary to open a plurality of threaded through holes on the twisting key 2 and the key sleeve body 1, thereby avoiding the twisting key 2 The fatigue strength of the key sleeve 1 is affected, thereby ensuring that the twist key 2 and the key sleeve body 1 have sufficient structural strength and mechanical properties.

It should be noted that, in the above embodiment, the connection structure of the support sleeve 3 and the first connection portion, and the connection structure of the support ring 4 and the second connection portion are not limited, so any connection structure can be It is within the scope of the present invention to provide the twist button 2 in the keyway 11 in the key housing 1.

Of course, a specific connection structure can be designed; please refer to Figure 7, Figure 8, Figure 9 and Figure

10, FIG. 7 is a schematic structural view of the transmission key of the power head transmission device of FIG. 3; FIG. 8 is a front view of the transmission key of FIG. 7; FIG. 9 is a schematic structural view of the support sleeve of the power head transmission device of FIG. Figure 10 is a front cross-sectional view of the support sleeve of Figure 9.

As shown in FIG. 7 and FIG. 8, the twisting key 2 includes a key base 21, and the first connecting portion is a first key handle 22 protruding from an upper end surface of the key base 21; as shown in FIG. 9 and FIG. The lower end surface of the sleeve 3 is provided with a first boss 31; as shown in FIG. 3, the gap between the first boss 31 and the inner wall of the key sleeve body 1 forms a first annular groove, and the first key handle 22 is assembled to the first In an annular groove. Specifically, as shown in FIG. 3, the first key lever 22 is engaged with the first boss 31, the upper end surface of the first key handle 22 abuts against the lower end surface of the support sleeve 3, and the upper end surface 4 of the key base 21 is connected. The lower end surface of a boss 31. The support sleeve 3 not only forms the first annular groove but also the assembled structure with the key sleeve body 1 has reasonable mechanical properties to achieve all the back pressure of the drill rod to the power head.

Further, referring to FIG. 3 and FIG. 6, the inner wall of the lower end portion of the key sleeve body 1 is provided with a mounting groove 12 in the circumferential direction. The support ring 4 is disposed in the mounting groove 12, and the bottom side wall of the mounting groove 12 supports the support ring 4. It should be noted that the mounting groove 12 can be formed by the undercut groove, and the structural design of the undercut groove does not only provide a reasonable process for processing the key groove 11, but also provides a mounting position for the support ring 4. On this basis, a specific design can be made for the connection structure between the support ring 4 and the transfer key 2.

Please refer to FIG. 11 , FIG. 12 and FIG. 13 . FIG. 11 is a schematic structural view of the support ring of the power head transmission device of FIG. 3 . FIG. 12 is a front cross-sectional view of the support ring of FIG. 11 ; FIG. 13 is a support ring of FIG. 11 . The bottom view. As shown in FIG. 7 and FIG. 8, the second connecting portion is a second key handle 23 protruding from the lower end surface of the key table 21; as shown in FIG. 11 and FIG. 12, the upper end surface of the support ring 4 is provided with a second end. The boss 41; as shown in FIG. 3, the gap between the second boss 41 and the bottom wall of the mounting groove 12 forms a second annular groove, and the second key handle 23 is fitted in the second annular groove. Specifically, as shown in FIG. 3, the lower end surface of the key table 21 is pressed against the upper end surface of the second boss 41, and the lower end surface of the second key lever 23 is pressed against the upper end surface of the support ring 4, and the second boss 41 is The second key handle 23 is fitted. The connection structure is very convenient to realize the connection between the support ring 4 and the transmission key 2, and the structure is relatively simple, and the connection reliability is high.

Referring to Fig. 11, Fig. 12 and Fig. 13, on the basis of any of the above embodiments, a specific design of the structure of the support ring 4 can be made. Specifically, the support ring 4 is divided into arc segments in which at least three end faces are successively fitted, and each of the arc segments is sequentially assembled into the mounting groove 12.

Further, as shown in FIG. 11, in each of the arc segments, the two end faces of the arc 42 having the smallest curvature are parallel to each other, and in other large arc segments, the two end faces have a certain angle; First, the arc with a larger arc is installed, and finally the arc 42 with the smallest curvature is installed, and the arc 42 with the smallest arc and the bottom sidewall of the mounting groove 12 are fixed by bolts. In this structure, as shown in Fig. 13, the arc 42 having the smallest curvature is not broken due to being fixed by bolts, and at the same time, the other arcs are larger due to the angle between the two end faces thereof, thereby causing the phase A self-locking structure is formed between adjacent arc segments, so that no falling off occurs. When disassembling, the order is the same, first remove the arc with the smallest curvature, then remove the other arcs.

Referring to FIG. 9 and FIG. 10, in order to facilitate the welding between the support sleeve 3 and the key sleeve body 1, the upper end portion of the outer wall of the support sleeve 3 is provided with an inclined surface 32, and the inclined surface 32 and the inner wall of the key sleeve body 1 are formed. A large gap, which can be used to fill the solder, thereby firmly welding the support sleeve 3 to the key sleeve body 1.

Further, on the basis of any of the above embodiments, it is also possible to further improve the assembly structure between the twist key 2 and the key groove 11 of the key sleeve 1.

Specifically, as shown in FIG. 4, the two sides of the twist button 2 may be a slope 24, and the two sidewalls of the keyway 11 may be inclined walls 111 that cooperate with the corresponding slopes 24, that is, the keyway 11 is a kind Dovetail groove structure. When the twist button 2 is in impact contact with the keyway 11, the structural design can increase the contact area and reduce the impact stress, thereby reducing damage to the twist key 2 and the keyway 11.

Further, as shown in FIG. 4, the width of the key groove 11 is increased, thereby causing the inclination of the key groove 11. The wall 111 has a gap between the inclined faces 24 corresponding to the twisting key 2, so that the twisting key 2 can slide in the circumferential direction, so that the optimum cooperation state between the twisting key 2 and the outer key of the drill pipe is avoided. One point of the drill pipe is stressed and damaged in advance. In addition, the twisting key 2 slides in the circumferential direction, and can also control the radial degree of freedom of the adjustment drill pipe, thereby improving the early damage of the bottom steel pipe caused by the instability of the drill pipe due to the pressure bar instability.

The assembly process of the power head transmission device provided by the present invention is as follows: the support sleeve 3 is loaded into the key sleeve body 1, and the upper end surface of the support sleeve 3 is flush with the upper end surface of the key sleeve body 1 and welded, and supported after welding. The first boss 31 of the sleeve 3 forms a first annular groove with the inner wall of the key sleeve body 1; then, the twist key 2 is inserted into the key groove 11 of the key sleeve body 1, and the twist key 2 is lifted up to make the first key handle Inserting the first annular groove into the first annular groove; then, inserting each arc of the support ring 4 into the mounting groove 12 of the key sleeve body 1 in the order described above to form the support ring 4, and at this time, the second convex portion of the support ring 4 A second annular groove is formed between the table 41 and the bottom wall of the mounting groove 12, and the second key handle 23 of the lower end of the twisting key is pressed into the second annular groove. When the power head is twisted, the side of the twist button 2 contacts the side wall of the keyway 1 and transmits power to the drill pipe; when the power head is pressurized, the lower end surface of the key table 21 of the twist button 2 contacts the drill pipe press table, and transmits Apply pressure to the support sleeve 3.

In addition, the present invention also provides a rotary drilling rig comprising a drill pipe, the drill pipe being provided with a drill pipe external key; the rotary drilling rig further comprising the power head transmission device of any of the above embodiments, the power The head drive is placed outside the drill pipe and the twist button 2 cooperates with the drill pipe outer key to transmit pressure and torque.

A pipe flushing sleeve provided by the present invention has been described in detail above. The application herein is to aid in understanding the method of the present invention and its core idea. It should be noted that those skilled in the art can make various modifications and changes to the present invention without departing from the spirit and scope of the invention.

Claims

Rights request

A power head transmission device comprising a key sleeve body (1), a plurality of key grooves (11) are defined in an inner wall of the key sleeve body (1), and each of the key grooves (11) is equipped with a twist button ( 2); characterized in that: the upper end of the twist button (2) is provided with a first connecting portion, and the lower end thereof is provided with a second connecting portion; and the inner wall of the upper end of the key sleeve body (1) is provided with a supporting sleeve ( 3), the inner wall of the lower end of the key sleeve body (1) is provided with a support ring (4); the support sleeve (3) is connected with the first connecting portion, the support ring (4) and the second The connection is connected.

The power head transmission device according to claim 1, wherein said torque key (2) comprises a key table (21), and said first connecting portion protrudes from said key table (21) a first key handle (22) of the upper end surface; a lower end surface of the support sleeve (3) is provided with a first boss (31), and the first boss (31) and the inner wall of the key sleeve body (1) The gap between the first annular groove is formed, and the first key handle (22) is fitted in the first annular groove.

The power head transmission device according to claim 1 or 2, wherein the inner wall of the lower end portion of the key sleeve body (1) is provided with a mounting groove (12) in a circumferential direction, and the support ring (4) Provided in the mounting groove (12), the bottom side wall of the mounting groove (12) supports the support ring (4).

The power head transmission device according to claim 3, wherein said torque key (2) comprises a key table (21), and said second connecting portion protrudes from said key table (21) a second key handle (23) of the lower end surface; a top surface of the support ring (4) is provided with a second boss (41), and the second boss (41) and the bottom of the mounting groove (12) The gap between the walls forms a second annular groove into which the second key shank (23) fits.

The power head transmission device according to claim 3, wherein the support ring (4) is divided into arc segments in which at least three end faces are sequentially attached, and each of the arc segments is sequentially assembled into the mounting groove.

(12) Medium.

The power head transmission device according to claim 5, wherein in each of the arc segments, the two end faces of the arc having the smallest curvature are parallel to each other, and the arc segment (42) is The bottom side wall of the mounting groove (12) is fixedly connected.

The power head transmission device according to claim 1 or 2, wherein the two sides of the twist button (2) are inclined faces (24), and the two side walls of the keyway (12) are An inclined wall (111) that cooperates with the corresponding inclined surface (24).

A power head transmission according to claim 7, wherein said inclined wall (111) has a gap with said corresponding inclined surface (24).

The power head transmission device according to claim 1 or 2, wherein an upper end portion of the outer wall of the support sleeve (3) is provided with an inclined surface (32), the inclined surface (32) and the key Casing

The gap between the inner walls of (1) is filled with solder.

A rotary drilling rig, characterized by further comprising a power head transmission according to any one of claims 1 to 9.