CN105156041A - Azimuth Drilling Rig and Its Casing Clamping Mechanism - Google Patents

Abstract

The casing clamping mechanism includes a chassis, two first connecting rods, two second connecting rods, a clamping driving device and a clamping arm. The first ends of the two first connecting rods are hinged with the chassis through pin shafts, the first ends of the two second connecting rods are hinged with the clamping arm through pin shafts, and the second ends of the two first connecting rods are hinged with the clamping arm through pin shafts. end and the second ends of the two second connecting rods are respectively hinged with the opposite ends of the clamping drive device through pin shafts, and the clamping arm is formed on the side away from the clamping drive device for clamping the sleeve The clamping surface of the pipe, the clamping driving device is used to drive the two first connecting rods and the two second connecting rods to drive the clamping arm to move towards the casing to clamp the casing. The invention also provides a fully rotary drilling machine with the casing clamping mechanism.

Description

Azimuth Drilling Rig and Its Casing Clamping Mechanism

technical field

The present invention relates to a full-turn drilling machine, and in particular to a full-turn drilling machine and a casing clamping mechanism thereof.

Background technique

When the full-rotary drilling rig is pulling out the casing, in order to prevent the casing from sliding down into the hole and causing construction accidents, the main clamping device and the auxiliary clamping device need to alternately clamp the casing to ensure that the casing is in a clamped state. Since the main clamping device adopts the clamping structure of the wedge block, the force of the clamping oil cylinder is amplified, and it is easy to realize the clamping of the casing. However, the auxiliary clamping device is limited by the structural size and cannot achieve wedge-shaped clamping. At the same time, the clamping drive device supplies oil to the small cavity during the clamping action, and the hydraulic oil has a small area. Therefore, it is necessary to increase the structural size of the clamping drive device body. The way to achieve the purpose of increasing the clamping force leads to the auxiliary oil cylinder itself is too large and the manufacturing cost is high, and at the same time it causes difficulties in installation and use.

Fig. 1 is a front view structural schematic diagram of an existing full-rotary drilling rig. Fig. 2 is a three-dimensional structural schematic view of the auxiliary clamping device and the base of the full-turn drilling rig shown in Fig. 1 . Fig. 3 is a schematic plan view of the auxiliary clamping device shown in Fig. 2 . Referring to FIG. 1 to FIG. 3 , the azimuthal drilling rig includes a base 1 , a driving platform 2 disposed on the base 1 , and a clamping platform 3 disposed on the driving platform 2 . The base 1 is provided with a secondary clamping device 5 . The auxiliary clamping device 5 includes a clamping arm 51 and a clamping driving device 53 . The clamping arm 51 includes a first clamping arm 511 , a second clamping arm 512 and a third clamping arm 513 . The second clamping arm 512 is connected to the first clamping arm 511 and the third clamping arm 513 through pins. The first clamping arm 511 and the third clamping arm 513 are respectively connected to joint bearings at opposite ends of the clamping driving device 53 . Driven by the clamping drive device 53, the first clamping arm 511 and the third clamping arm 513 rotate around the pin shaft connected to the second clamping arm 512 to clamp or loosen the casing ( not shown). Specifically, when the clamping drive device 53 is supplied with oil in the large cavity, the clamping drive device 53 is extended so that the auxiliary clamping device 5 releases the sleeve; when the clamping drive device 53 is supplied with oil in the small cavity, The clamping drive 53 is retracted so that the secondary clamping device 5 clamps the sleeve.

Since the auxiliary clamping device 5 is limited by the structural size, it cannot be clamped in a wedge-shaped structure. At the same time, the clamping drive device 53 supplies oil to the small cavity during the clamping action, and the hydraulic oil has a small area. Therefore, it is necessary to increase the clamping drive device 53. The purpose of increasing the clamping force is achieved by the structural size of the main body, resulting in the large volume of the clamping drive device 53 itself, which not only increases the manufacturing cost of the auxiliary clamping device 5 but also fails to exert the performance of the clamping drive device 53, and at the same time Caused extra burden to installation and use. In addition, the clamping arm 51 is composed of three clamping arms 511, 512, 513 connected by pin shafts. In order to ensure that the three clamping arms 511, 512, 513 are concentric, the position of the pin shaft connecting holes is highly required. , leading to high manufacturing and processing precision requirements, which is not conducive to reducing equipment manufacturing costs.

Contents of the invention

The invention provides a full-rotary drilling rig and a casing clamping mechanism thereof, which can reduce the structural size of a clamping drive device, reduce costs, and have better clamping effect at the same time.

The present invention solves the technical problem by adopting the following technical solutions.

A sleeve clamping mechanism is used for clamping sleeves. The casing clamping mechanism includes a chassis, two first connecting rods, two second connecting rods, a clamping driving device and a clamping arm. The first ends of the two first connecting rods are hinged with the chassis through pin shafts, and the first ends of the two second connecting rods are hinged with the clamping arm through pin shafts. The second ends of the two first connecting rods and the second ends of the two second connecting rods are respectively hinged to the opposite ends of the clamping driving device through pin shafts, and the clamping arm is away from the clamping driving device One side of one side forms a clamping surface for clamping the sleeve, and the clamping drive device is used to drive the two first connecting rods and the two second connecting rods to drive the clamping arm to move toward the sleeve to achieve Clamp the sleeve.

In a preferred embodiment of the present invention, the two first connecting rods are respectively hingedly connected to opposite ends of the chassis, and the two second connecting rods are respectively hingedly connected to opposite ends of the clamping arm.

In a preferred embodiment of the present invention, one end of the clamping driving device is hingedly connected to the second end of one of the first connecting rods and the second end of one of the second connecting rods, and the other end of the clamping driving device is connected to The second end of the other first connecting rod is hingedly connected with the second end of the other second connecting rod.

In a preferred embodiment of the present invention, the clamping driving device is a clamping oil cylinder or a clamping air cylinder.

In a preferred embodiment of the present invention, the clamping drive device includes a cylinder and a telescopic rod that is telescopic relative to the cylinder, and the end of the telescopic rod connects with the second end of one of the first connecting rods and the The second end of a second connecting rod is hingedly connected, and the end of the cylinder tube away from the telescopic rod is hingedly connected with the second end of the other first connecting rod and the second end of the other second connecting rod.

In a preferred embodiment of the present invention, the clamping drive device is a screw drive device.

In a preferred embodiment of the present invention, when the clamping arm is in the state of clamping the bushing, the angle α between the center line of each second connecting rod and the horizontal line is greater than 0°, and each second connecting rod The angle β between the centerline of the clamping drive and the centerline of the clamping drive is greater than 90°.

In a preferred embodiment of the present invention, the included angle α is 10-30°, and the included angle β is 100-120°.

A fully rotary drilling rig, comprising a base and a casing, the base is provided with the above-mentioned casing clamping mechanism, and the two sets of casing clamping mechanisms are used to clamp the casing from opposite sides of the casing .

In a preferred embodiment of the present invention, the azimuth drilling machine further includes a driving platform on the base and a clamping platform on the driving platform.

The beneficial effect of the present invention is that the thrust generated by the clamping driving device of the present invention can be transmitted to the clamping arm through the first connecting rod and the second connecting rod, so that the clamping arm moves toward the sleeve, thereby Clamp or loosen the sleeve. Since the first connecting rod and the second connecting rod can increase the thrust force and have a better clamping effect, the clamping driving device of the present invention can have a smaller structural size under the condition of achieving the same clamping force , which is beneficial to reduce the manufacturing cost, facilitate installation and maintenance, and also help reduce the requirements for manufacturing processing accuracy.

The above description is only an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention, it can be implemented according to the contents of the specification, and in order to make the above-mentioned full-rotary drilling rig and other purposes, features and advantages of the present invention better. It is obvious and easy to understand. The preferred embodiments will be described in detail below with accompanying drawings.

Description of drawings

Fig. 1 is a front view structural schematic diagram of an existing full-rotary drilling rig.

Fig. 2 is a three-dimensional schematic diagram of the base and the auxiliary clamping device of the full-turn drilling rig shown in Fig. 1 .

Fig. 3 is a schematic plan view of the auxiliary clamping device of the azimuth drilling rig shown in Fig. 2 .

Fig. 4 is a schematic diagram of the front view of the fully rotary drilling rig according to the preferred embodiment of the present invention.

Fig. 5 is a schematic plan view of the auxiliary clamping device of the azimuth drilling rig shown in Fig. 4 .

Detailed ways

In order to further explain the technical means and effects of the present invention to achieve the intended purpose of the invention, the specific implementation methods, The structure, characteristics and functions thereof are described in detail as follows:

The aforementioned and other technical contents, features and effects of the present invention will be clearly presented in the following detailed description of preferred embodiments with reference to the drawings. Through the description of specific implementation methods, the technical means and effects of the present invention to achieve the intended purpose can be understood more deeply and specifically, but the attached drawings are only for reference and description, and are not used to explain the present invention limit.

Referring to FIG. 4 , an azimuth drilling machine 100 according to a preferred embodiment of the present invention includes a base 10 , a driving platform 20 located on the base 10 , and a clamping platform 30 disposed on the driving platform 20 .

Please refer to FIG. 5 further, the base 10 is provided with a clamping mechanism 40 for clamping the sleeve 50 , and the clamping mechanism 40 can clamp or loosen the sleeve 50 . In this embodiment, the base 10 is provided with two sets of clamping mechanisms 40 located on opposite sides of the casing 50 .

Each clamping mechanism 40 includes a chassis 41 , two first connecting rods 42 , two second connecting rods 43 , a clamping driving device 44 and a clamping arm 45 .

First ends of the two first connecting rods 42 are hinged to the chassis 41 via a connecting rod pin 46 . First ends of the two second connecting rods 43 are hinged to the clamping arm 45 via a connecting rod pin 47 . Both the first connecting rod 42 and the second connecting rod 43 have a length of 400-700 mm.

Specifically, the two first connecting rods 42 are respectively hingedly connected to opposite ends of the chassis 41 through connecting rod pins 46 . The two second connecting rods 43 are respectively hingedly connected to opposite ends of the clamping arm 45 through connecting rod pins 47 .

The second ends of the two first connecting rods 42 and the second ends of the two second connecting rods 43 are respectively hinged to opposite ends of the clamping driving device 44 through the cylinder pin 48 . That is to say, the opposite ends of the clamping drive device 44 are respectively hingedly connected to the second ends of the two first connecting rods 42 and the second ends of the two second connecting rods 43 through the cylinder pin 48, namely One end of the clamping driving device 44 is hingedly connected with the second end of one of the first connecting rods 42 and the second end of one of the second connecting rods 43 through the cylinder pin 48, and the other end of the clamping driving device 44 is connected through The cylinder pin 48 is hingedly connected to the second end of the other first connecting rod 42 and the second end of the other second connecting rod 43 .

Specifically, the clamping drive device 44 includes a cylinder 442 and a telescopic rod 441 that is telescopic relative to the cylinder 442, and the end of the telescopic rod 441 is connected to the second end of one of the first connecting rods 42 through the cylinder pin 48. And the second end of one of the second connecting rods 43 is hingedly connected, and the end of the cylinder 442 away from the telescopic rod 441 is connected with the second end of the other first connecting rod 42 and another second connecting rod through the cylinder pin 48. The second end of the rod 43 is hingedly connected.

The clamping drive device 44 can be a clamping oil cylinder or a clamping air cylinder.

It can be understood that the clamping drive device 44 can also be a screw drive device.

A side of the clamping arm 45 away from the clamping driving device 44 forms an arc-shaped clamping surface 450 for clamping the sleeve 50 . When the clamping driving device 44 of the two groups of clamping mechanisms 40 is extended simultaneously, the clamping driving device 44 pushes the clamping arm 45 through the first connecting rod 42 and the second connecting rod 43 to carry out the sleeve pipe 50 Clamping; when the clamping drive 44 is retracted, the clamping drive 44 releases the clamping of the sleeve 50 .

It can be understood that when the clamping arm 45 is in the clamping state to the sleeve 50, the smaller the angle α between the center line of each second link 43 and the horizontal line X, the smaller the angle α between the center line of each second connecting rod 43 and the horizontal line X, the more the secondary clamping device 40 will The greater the clamping force exerted by the bushing 50 or the thrust generated by the clamping drive device 44 , the angle α is greater than 0°. Preferably, the included angle α may be 10-30°. That is to say, the smaller the angle β between the centerline of each second link 43 and the centerline of the clamping drive device 44 is, the smaller the clamping force applied by the secondary clamping device 40 to the bushing 50 or The greater the thrust generated by the clamping drive device 44, the angle β is greater than 90°. Preferably, the included angle β may be 100-120°.

It can be understood that the angle α or the angle β can be set according to the actual required clamping force, so as to adjust the clamping force of the clamping arm 45 on the sleeve 50 .

It can be understood that the size of the included angle α or the included angle β can be set by changing the lengths of the first connecting rod 42 and the second connecting rod 43 , so as to adjust the clamping of the clamping arm 45 to the sleeve 50 Tight force. Specifically, the clamping driving device 44 drives the first connecting rod 42, the second connecting rod 43 and the clamping arm 45 to move horizontally along the direction close to the sleeve 50, so that the clamping arm 45 clamps the sleeve. tube 50, when the length of the first link 42 and the second link 43 is longer, the levels of the clamping drive device 44, the first link 42, the second link 43 and the clamping arm 45 The moving distance is relatively short, so that the clamping arm 45 can clamp the sleeve 50, that is to say, the clamping drive device 44 pushes the first connecting rod 42, the second connecting rod 43 and the clamping arm 45 The time is shorter, at this time, the angle α and the angle β are larger; when the length of the first connecting rod 42 and the second connecting rod 43 is shorter, the clamping drive device 44, the first connecting rod 42. The horizontal movement distance of the second link 43 and the clamping arm 45 is relatively long, so that the clamping arm 45 can clamp the casing 50, that is to say, the clamping driving device 44 pushes the first The connecting rod 42 , the second connecting rod 43 and the clamping arm 45 are longer, and the included angle α and the included angle β are smaller.

When the small cavity of the clamping drive device 44 is supplied with oil, the clamping drive device 44 retracts, and drives the clamping arm 45 to move away from the casing 50 through the first connecting rod 42 and the second connecting rod 43, thereby The clamping arm 45 is loosened from the sleeve 50; when the clamping drive device 44 is supplied with oil, the clamping drive device 44 stretches out and is driven by the first connecting rod 42 and the second connecting rod 43 The clamping arm 45 moves toward the sleeve 50 , so that the clamping arm 45 clamps the sleeve 50 . The clamping driving device 44 is in an unfixed floating state on the chassis 41 and the clamping arm 45. When the clamping driving device 44 is supplied with oil, it can simultaneously push the two sets of connections at the opposite ends of the clamping driving device 44. A lever mechanism is used to apply a relatively balanced clamping force to the clamping arm 45 toward the sleeve 50 .

The force bearing form among the first connecting rod 42 , the second connecting rod 43 and the clamping driving device 44 is a force bearing structure of two force rods. The two-force rod structure can ensure that when the auxiliary clamping device 40 is working, the thrust or pulling force generated by the clamping driving device 44 is transmitted to the clamping arm 45 through the first connecting rod 42 and the second connecting rod 43 , so that the clamping arm 45 can move in the horizontal direction, so as to clamp or loosen the sleeve 50 .

Furthermore, the clamping driving device 44 completes the clamping action of the clamping arm 45 on the sleeve 50 through the thrust of the large cavity, and the first link 42 and the second link 43 can increase the thrust. That is to say, the force bearing structure of the two force rods can increase the clamping force of the clamping arm 45 to the sleeve 50, and has a better clamping effect. The clamping driving device 44 can have a smaller structural size, which reduces the manufacturing cost of the clamping driving device 44 and facilitates installation and maintenance.

Further, the secondary clamping device 40 no longer adopts three clamping arms 511, 512, 513 (Fig. 3) connected by pin shafts for clamping as in the prior art, which reduces the requirements for manufacturing precision and facilitates Reduce equipment manufacturing costs.

It can be understood that, compared with the existing clamping driving device 53 ( FIG. 3 ), the first connecting rod 42 and the second connecting rod 43 of the present invention can increase the thrust of the clamping driving device 44 by 40~ 60 times.

It can be understood that the clamping driving device 44 can also be replaced by a clamping cylinder or a screw drive device, as long as the first connecting rod 42 and the second connecting rod 43 can be pushed to drive the clamping arm 45 to move horizontally toward the casing 50 It is enough to clamp the sleeve pipe 50 . Therefore, the clamping drive, the clamping cylinder or the spindle drive can also be referred to as a clamping drive.

The first connecting rod 42 and the second connecting rod 43 in the secondary clamping device 40 of the present invention can increase the thrust of the clamping drive device 44 to the clamping arm 45, thereby amplifying the force of the clamping arm 45 on the clamping arm 45. The clamping force of the sleeve 50 enables the clamping arm 45 to clamp the sleeve 50 when the clamping driving device 44 of the present invention is designed with a smaller structural size. The clamping driving device 44 has low manufacturing cost, simple structure, and is convenient for installation and maintenance, which improves the working stability of the secondary clamping device 40 .

The full-rotary drilling rig provided by the present invention and its casing clamping mechanism have been introduced in detail above. In this paper, specific examples are used to illustrate the principle and implementation of the present invention. The descriptions of the above embodiments are only used to help understand the present invention. The method of the invention and its core idea; at the same time, for those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation and scope of application. In summary, the content of this specification should not be understood To limit the present invention.

Claims (10)

1. a sleeve pipe clamp system (40), for gripping sleeve (50), it is characterized in that, this sleeve pipe clamp system (40) comprises chassis (41), two first connecting rods (42), two second connecting rods (43), driving clamping device (44) and clamping limb (45), first end and this chassis (41) of these two first connecting rods (42) are hinged by bearing pin (46), first end and this clamping limb (45) of these two second connecting rods (43) are hinged by bearing pin (47), it is hinged with the opposite end of this driving clamping device (44) respectively that second end of these two first connecting rods (42) and the second end of these two second connecting rods (43) pass through bearing pin (48), this clamping limb (45) forms the clamping face (450) for clamping this sleeve pipe (50) in the side away from this driving clamping device (44), this driving clamping device (44) drives this clamping limb (45) to clamp towards mobile realization of this sleeve pipe (50) this sleeve pipe (50) for driving these two first connecting rods (42) and this two second connecting rods (43).

2. sleeve pipe clamp system (40) as claimed in claim 1, it is characterized in that, these two first connecting rods (42) are articulated and connected in the opposite end of this chassis (41) respectively, and these two second connecting rods (43) are articulated and connected respectively in the opposite end of this clamping limb (45).

3. sleeve pipe clamp system (40) as claimed in claim 2, it is characterized in that, second end of one end of this driving clamping device (44) and the second end of one of them first connecting rod (42) and one of them second connecting rod (43) is articulated and connected, and the second end of the other end of this driving clamping device (44) and the second end of another first connecting rod (42) and another second connecting rod (43) is articulated and connected.

4. sleeve pipe clamp system (40) as claimed in claim 1, it is characterized in that, this driving clamping device (44) is clamping cylinder or clamping cylinder.

5. sleeve pipe clamp system (40) as claimed in claim 4, it is characterized in that, this driving clamping device (44) comprise cylinder barrel (442) with can the flexible expansion link (441) of relative this cylinder barrel (442), the end of this expansion link (441) is articulated and connected by bearing pin (48) and second end of one of them first connecting rod (42) and the second end of one of them second connecting rod (43), this cylinder barrel (442) is articulated and connected away from the second end of the end of this expansion link (441) and the second end of another first connecting rod (42) and another second connecting rod (43).

6. sleeve pipe clamp system (40) as claimed in claim 1, it is characterized in that, this driving clamping device (44) is lead screw gear.

7. sleeve pipe clamp system (40) as claimed in claim 1, it is characterized in that, when this clamping limb (45) is in clamped condition to this sleeve pipe (50), angle α between the center line of each second connecting rod (43) and horizon (X) is greater than 0 °, and the angle β between the center line of each second connecting rod (43) and the center line of this driving clamping device (44) is greater than 90 °.

8. sleeve pipe clamp system (40) as claimed in claim 7, it is characterized in that, this angle α is 10 ~ 30 °, and this angle β is 100 ~ 120 °.

9. a full-rotating drill (100), comprise base (10) and sleeve pipe (50), it is characterized in that, be provided with two groups of sleeve pipe clamp systems (40) as described in any one of claim 1 to 8 in this base (10), these two groups of sleeve pipe clamp systems (40) clamp this sleeve pipe (50) for the relative both sides from this sleeve pipe (50).

10. full-rotating drill (100) as claimed in claim 9, it is characterized in that, this full-rotating drill (100) also comprises the driving platform (20) be positioned on this base (10) and the jig platform (30) be positioned on this driving platform (20).