WO2023020341A1

WO2023020341A1 - Rod dismounting pliers

Info

Publication number: WO2023020341A1
Application number: PCT/CN2022/111321
Authority: WO
Inventors: 杨敏
Original assignee: 安百拓（南京）建筑矿山设备有限公司
Priority date: 2021-08-16
Filing date: 2022-08-10
Publication date: 2023-02-23
Also published as: CN113752201A

Abstract

A pair of rod dismounting pliers (10). The rod dismounting pliers (10) are used for dismounting a drill rod (11) in a range from a first diameter to a second diameter and comprise: a fixed supporting frame (12), a swinging member (13), a holding member (14), a clamping member (15) and a driving mechanism, wherein the swinging member (13) is hinged to the fixed supporting frame (12) and can swing into or out of a working position; a limiting groove (21) is formed in the swinging member (13), and a first track line (24), a second track line (25), a first swinging position (22) and a second swinging position (23) are limited by using side lines of the limiting groove (21); the holding member (14) is provided with a sliding shaft (20) protruding from the holding member (14), the sliding shaft (20) is located in the limiting groove (21), the holding member (14) is limited to the swinging member (13), and the holding member (14) can move within a range limited by the limiting groove (21); the clamping member (15) is hinged to the holding member (14), and an arc-shaped curved surface (27) is arranged on the clamping member (15); and the driving mechanism is used for driving the swinging member (13), the holding member (14) and the clamping member (15) to move.

Description

A rod unloading pliers

technical field

The invention belongs to the technical field of construction machinery equipment, and in particular relates to a rod unloading tong.

Background technique

When the blast hole drilling rig is drilling, in order to achieve the required drilling depth, it generally needs to use more than two drill pipes for operation, which requires the drilling rig to have the function of connecting and disassembling multiple drill pipes. During the dismantling process of the drill pipe, the drill pipe protruding into the ground is fixed by the fork-shaped device and cannot be rotated, while the upper drill pipe loosens the connecting thread under the action of the rod unloading pliers, so that the two drill pipes can be separated.

Rod unloading tongs in the prior art, such as chain hydraulic wrench, require the operator to manually lock the chain on the drill pipe, which is inconvenient to operate. Moreover, the current rod unloading tongs can only be applied to a drill pipe of one size at most. If the drilling rig changes the diameter of the drill pipe, the rod unloading tongs also need to be replaced at the same time. For example, the utility model patent with the application number 201922037179.9 discloses a non-slip hydraulic tong, which can only be used to remove drill pipes of one size.

Contents of the invention

Technical problem: The present invention provides a rod unloading tong that can automatically unload the rod and is suitable for dismounting drill pipes of various sizes.

Technical solution: The present invention provides a rod unloading pliers for removing drill pipes ranging from the first diameter to the second diameter, including:

A fixed support frame is used to fix the rod unloading tongs on the drilling rig equipment;

The swing member is hinged on the fixed support frame and can be swung into or out of the working position; the limit slot is set on the swing member, and the first trajectory line, the second track line, and the second track line are limited by the limit line of the limit slot. Trajectory line, first position and second position;

A clamping member, the clamping member is provided with a sliding shaft protruding from the clamping member, the sliding shaft is located in the limiting groove, and the clamping member is restricted on the swinging member, and the clamping member can be positioned in the limiting groove movement within a limited range; the holding member is provided with a concave opening for restricting the drill rod in the concave opening when the rod is unloaded;

A clamping member, the clamping member is hinged on the clamping member, and the clamping member is provided with an arc-shaped curved surface capable of matching drill pipes ranging from the first diameter to the second diameter; when unloading the rod, the The arc-shaped curved surface acts on the drill pipe, and the drill pipe is clamped by cooperating with the concave opening;

The driving mechanism is used to drive the swing member, the clamping member and the clamping member to move.

Further, the first trajectory line is an arc, and the radius of the arc is the distance from the axis of the drill rod to the axis of the sliding shaft when the drill rod with the first radius is clamped.

Further, the second trajectory line is an arc, and the radius of the arc is the distance from the axis of the drill rod to the axis of the sliding shaft when the drill rod with the second radius is held.

Further, the swinging member is a structural member composed of two plate-shaped parts arranged oppositely, the clamping member is located between the two plate-shaped parts, and the limiting groove is formed oppositely on the two plate-shaped parts.

Further, the swing member is driven by a first telescopic part, one end of the first telescopic part is hinged on the fixed support frame, and the other end is hinged on the holding member.

Further, the holding member is driven by a second telescopic part, one end of the second telescopic part is hinged on the swing member, and the other end is hinged on the holding member; the second telescopic part is hinged on the first telescopic part The same position of the swing member.

Further, the driving mechanism for the movement of the clamping member relative to the holding member is a third telescopic part, one end of the third telescopic part is hinged on the sliding shaft, and the other end is hinged on one end of the clamping member.

Further, when the holding member moves from the first position to the second position, the sliding shaft takes the hinge point of the first telescopic part and the holding member as the center of a circle, and the angle of rotation ranges from 5° to 20°.

Further, when disassembling the drill pipes within the range from the first radius to the third radius, during the process of clamping the drill pipes, the clamping member is relative to the swinging member and hinged around the clamping member and the second telescopic member axis, rotate to the second position; in the process of unloading the rod, the sliding shaft takes the center of the drill rod as the center, and rotates along the second trajectory until the connecting thread of the drill rod is loosened;

When dismounting the drill pipe within the range from the third radius to the second radius, during the process of swinging the rod unloading tongs into the working position, the clamping member rotates to The first position; during the rod unloading process, the sliding shaft will take the center of the drill rod as the center and rotate along the first trajectory until the connecting thread of the drill rod is loosened;

The third diameter is larger than the first diameter and smaller than the second diameter.

Further, a limiting block is arranged on the swinging part for restricting the second telescopic part.

The preferred power mode of the present invention is hydraulic power, that is, the first telescopic part, the second telescopic part and the third telescopic part all adopt hydraulic power.

Compared with the prior art, the present invention uses the rod unloading pliers provided in the embodiments of the present invention to realize automatic rod unloading, thereby improving efficiency and reducing the work intensity of construction personnel; moreover, it can be used for multiple The disassembly of drill pipes with different diameters has better applicability. And if hydraulic power is used, it can also have sufficient torque and can be applied to relatively harsh working conditions.

Description of drawings

Fig. 1 is the structural diagram of rod unloading pliers in the embodiment of the present invention;

Fig. 2 is the exploded structural diagram of rod unloading pliers in the embodiment of the present invention;

Fig. 3 is the schematic diagram of the use of rod unloading pliers in the embodiment of the present invention;

Fig. 4 is a schematic diagram of the clamping process when the rod unloading clamp unloads a small-diameter drill pipe in an embodiment of the present invention;

Fig. 5 is a schematic diagram of the rod unloading process when the rod unloading clamp unloads a small-diameter drill pipe in an embodiment of the present invention;

Fig. 6 is a schematic diagram of the clamping process when the rod unloading tong unloads a large-diameter drill pipe in an embodiment of the present invention;

Fig. 7 is a schematic diagram of the rod unloading process when the rod unloading tong unloads a large-diameter drill pipe in an embodiment of the present invention.

In the figure: 10, rod unloading pliers; 11, drill pipe; 12, fixed support frame; 13, swing member; 14, clamping member; 15, clamping member; 16, first telescopic part; 17, second telescopic part ; 18, the third telescopic part; 19, the limit block; 20, the sliding shaft; 21, the limit groove; 22, the first position; 23, the second position; 24, the first track line; Trajectory line; 26, concave opening; 27, curved surface; 28, slips; 29, first pin; 30, second pin; 31, third pin; 32, fourth pin; 33, The 5th bearing pin; 34, the 6th bearing pin.

Detailed ways

The present invention will be further described below in conjunction with embodiment and accompanying drawing. It should be noted that the terms "first", "second" and the like are only for convenience of description, and should not be understood as limitations on the quantity and the like.

The rod unloading tongs in the embodiment of the present invention are used to unload the drill pipe 12 within the range from the first diameter to the second diameter, and are defined as follows: the first diameter is smaller than the second diameter, and the third diameter is larger than the first diameter and smaller than second diameter.

1 to 3 , the rod unloading pliers of the present invention includes a fixed support frame 12 , a swing member 13 , a clamping member 14 , a clamping member 15 and a driving member.

Wherein, the fixed support frame 12 is used to fix the rod unloading tongs on the drilling rig equipment through bolts, and the fixed support frame can be regarded as a connecting member between the rod unloading tongs and the drilling rig.

The swing member 13 is hinged on the fixed support frame 12 through the second pin shaft 30 and can rotate around the second pin shaft 30 . The swing member 13 utilizes the first telescopic member 16 as a drive mechanism. The first telescopic part can adopt a hydraulic cylinder or an electric cylinder or the like. One end of the first telescopic part 16 is hinged on the fixed support frame through the first pin shaft 29, and the other end is hinged on the swing member 13 through the third pin shaft 31, and the swing member is driven to move around the second rotating shaft 30 by the first telescopic part 16 , when the lever is unloaded, the swing member 13, the clamping member 14 and the clamping member 15 can be swung into or out of the working position.

A limit slot 21 is defined on the swing member 13 , and the first track line 24 , the second track line 25 , the first position 22 and the second position 23 are limited by the limit line of the limit slot 21 .

The holding member 14 is provided with a sliding shaft 20 that protrudes from the holding member 14. During assembly, the sliding shaft 20 is located in the limiting groove 21, and the holding member 14 is limited on the swinging member 13, so that the holding member 14 can be positioned in the limiting groove 21. Exercise within a limited range. The movement of the holding member 14 is mainly relative to the movement of the swing member 13, and the second telescopic part 17 is used as a driving mechanism. The second telescopic part can adopt a hydraulic cylinder or an electric cylinder or the like. One end of the second telescopic part 17 is hinged on the swing member through the third pin 31, and the other end is hinged on the holding member 14 through the fourth pin 32; it can be seen that the second telescopic part and the first telescopic part are hinged on the swing same location of the component. A concave opening 26 is provided on the holding member 14 for restricting the drill rod in the concave opening 26 when unloading the rod. Slips 28 are provided in the concave opening 26, and protrusions are provided on the slips 28, which can increase the frictional force with the drill pipe, be more conducive to clamping the drill pipe, and prevent slipping during the process of unloading the drill pipe.

When disassembling a drill pipe with a larger diameter, when the rod unloading tongs are swung into the working position, the clamping member of the rod unloading tongs interferes with the drill pipe, so that the rod unloading tongs cannot be swung into the working position, so in the present invention In the embodiment, the limiting groove 21 is used, so that the clamping member 14 can be adjusted in a wider range.

When disassembling the drill pipe within the range from the first radius to the third radius, during the process of clamping the drill pipe, the clamping member 14 rotates to the second position 23 relative to the swing member 13 around the axis of the fourth pin shaft 32; During the rod unloading process, the sliding shaft 20 will take the center of the drill rod as the center and rotate along the second trajectory line 25 until the connecting thread of the drill rod is loosened.

When dismounting the drill pipe within the range from the third radius to the second radius, in the process of swinging the rod unloading tongs 10 into the working position, the holding member 14 rotates to the first One position 22; during the rod unloading process, the sliding shaft 20 will take the center of the drill rod as the center and rotate along the first trajectory line 24 until the connecting thread of the drill rod is loosened. In an embodiment of the present invention, the first trajectory line is an arc, and the radius of the arc is the distance from the axis center of the drill rod to the axis center of the sliding shaft when the radius of the arc is holding the drill rod with the second radius; the second trajectory line is an arc, and its arc radius is the distance from the axis of the drill rod to the axis of the sliding shaft when the drill rod with the first radius is held.

In the embodiment of the present invention, when the holding member 14 is rotated from the first position to the second position, it can be set that the sliding shaft 20 can rotate around the fourth pin shaft 32 in a range of 5° to 20°, that is ∠C ₁ OC ₂ in Figure 3.

The clamping member 15 is hinged on the holding member 14 through the sixth pin shaft 34 ; therefore, the clamping member 15 can rotate relative to the holding member 14 around the hinge axis of the two. The clamping member 15 is provided with an arc-shaped curved surface 27 capable of matching drill pipes ranging from the first diameter to the second diameter. Drill pipes in the diameter range are obtained. When unloading the rod, the curved surface acts on the drill rod, and the drill rod is clamped by cooperating with the concave opening.

The clamping member 15 can move relative to the clamping member 14, and the third telescoping part 18 serves as a driving mechanism. The 3rd telescopic part can adopt hydraulic cylinder or electric cylinder etc. One end of the third telescopic part 18 is hinged on the sliding shaft 20 , and the other end is hinged on one end of the clamping member 15 through the fifth pin shaft 33 .

In the embodiment of the present invention, the swinging member 13 is a structural member composed of two plate-shaped parts arranged oppositely. on the plate. Similarly, the clamping member 14 can also be a structure in which two plate-shaped parts are arranged oppositely, and then the clamping member 15 is positioned between the two plate-shaped parts that constitute the clamping member 14, and the third telescopic part 18 is also positioned to form the clamping member. Between the two plate-shaped parts of the member 14.

In the embodiment of the present invention, in order to maintain the stability of the second telescopic part 17 , a limiting block is provided on the swing member 13 , so as to limit the second telescopic part 17 . Specifically, the limiting block 19 can be arranged between two plate-shaped parts constituting the swing member 13 .

The working principle of the rod unloading pliers of the present invention will be described with reference to FIGS. 4 to 7 .

First, with reference to Fig. 4 and Fig. 5, the process of removing a small-diameter drill pipe with the rod unloading tongs will be described. When removing a drill pipe whose diameter ranges from the first diameter to the third diameter, under the action of the first telescopic part 16, the entire rod unloading tongs are swung to the working position. In the process, because the diameter of the drill pipe is relatively small , the clamping member 14 does not interfere with the drill rod, and the drill rod is in the concave opening of the clamping member 14 after swinging to the working position. Then, under the drive of the third telescopic part 18, the drill rod is clamped through the cooperation of the clamping member 14 and the clamping member 15. During the clamping process, the clamping member 14 is relative to the swing member 13, around the fourth pin shaft 32 The axis rotates to the second position 25, so that the slips 28 are in contact with the drill rod, thereby clamping the drill rod. After clamping, use the second telescopic part 17 to drive the holding member 14 and the clamping part 15 to move as a whole to unload the rod. During the rod unloading process, the sliding shaft 20 slides along the second trajectory line 25 until the connecting thread of the drill pipe release.

With reference to Fig. 6 and Fig. 7, the process of removing a large-diameter drill pipe by the rod unloading tongs 10 will be described. When dismounting the drill pipe with the third diameter to the second diameter range, under the action of the first telescopic part 16, the whole rod unloading tongs are swung to the working position. During this process, because the diameter of the drill pipe is relatively small, the clamping The component 14 may interfere with the drill pipe. During the swing-in process, the holding component 14 rotates to the first position 22 relative to the swinging component 13 around the axis of the fourth pin shaft 32, that is, point O, so that the overall structure swings to the working position. Then, driven by the third telescoping part 18, the drill pipe is clamped through the cooperation of the clamping member 14 and the clamping member 15. During the rod unloading process, the sliding shaft 20 will slide along the first trajectory line 24 with the center of the drill rod as the center of a circle until the connecting thread of the drill rod is loosened.

In preferred embodiments, hydraulic power can be used. Using the rod unloading tongs provided in the embodiments of the present invention can realize automatic rod unloading, thereby improving efficiency and reducing the work intensity of construction personnel; moreover, it can be used for dismounting drill pipes with various diameters and sizes, and has the advantages of better applicability.

Claims

A rod unloading tongs, used for unloading drill pipes ranging from a first diameter to a second diameter, is characterized in that it comprises:

A fixed support frame is used to fix the rod unloading tongs on the drilling rig equipment;

The swing member is hinged on the fixed support frame and can be swung into or out of the working position; the limit slot is set on the swing member, and the first trajectory line, the second track line, and the second track line are limited by the limit line of the limit slot. Trajectory line, first position and second position;

A clamping member, the clamping member is provided with a sliding shaft protruding from the clamping member, the sliding shaft is located in the limiting groove, and the clamping member is restricted on the swinging member, and the clamping member can be positioned in the limiting groove movement within a limited range; the holding member is provided with a concave opening for restricting the drill rod in the concave opening when the rod is unloaded;

A clamping member, the clamping member is hinged on the clamping member, and the clamping member is provided with an arc-shaped curved surface capable of matching drill pipes ranging from the first diameter to the second diameter; when unloading the rod, the The arc-shaped curved surface acts on the drill pipe, and the drill pipe is clamped by cooperating with the concave opening;

The driving mechanism is used to drive the swing member, the clamping member and the clamping member to move.
The rod unloading tongs according to claim 1, wherein the first trajectory line is a circular arc, and the radius of the arc is the distance from the axis of the drill rod to the sliding axis when the drill rod with the first radius is held. axis distance.
The rod unloading tongs according to claim 2, wherein the second trajectory line is an arc, and the radius of the arc is the distance from the axis of the drill rod to the sliding axis when the drill rod with the second radius is held. axis distance.
The rod unloading pliers according to claim 3, characterized in that, the swinging member is a structural member composed of two plate-shaped parts arranged oppositely, the clamping member is located between the two plate-shaped parts, and the position limiting The grooves are oppositely formed on the two plate-shaped members.
The rod unloading pliers according to claim 4, wherein the swing member is driven by a first telescopic part, one end of the first telescopic part is hinged on the fixed support frame, and the other end is hinged on the on the support member.
The rod unloading pliers according to claim 5, wherein the holding member is driven by a second telescopic part, one end of the second telescopic part is hinged on the swing member, and the other end is hinged on the holding member ; The second telescopic part is hinged at the same position of the swing member as the first telescopic part.
The rod unloading pliers according to claim 6, wherein the driving mechanism for the movement of the clamping member relative to the holding member is a third telescopic part, one end of the third telescopic part is hinged on the sliding shaft, and the other end is Hinged to one end of the clamping member.
The rod unloading pliers according to claim 7, wherein when the holding member moves from the first position to the second position, the sliding shaft takes the hinge point of the first telescopic part and the holding member as the center of the circle, and the angle of rotation is The range is 5°～20°.
The rod unloading tongs according to any one of claims 1-8, characterized in that, when disassembling the drill rods within the range from the first radius to the third radius, during the clamping process of the drill rods, during the clamping process of the drill rods, Relative to the swing member, the holding member rotates to the second position around the axis where the holding member is hinged with the second telescopic part; during the rod unloading process, the sliding shaft rotates along the second trajectory with the center of the drill pipe as the center, Until the drill pipe connection thread is loosened;

When dismounting the drill pipe within the range from the third radius to the second radius, during the process of swinging the rod unloading tongs into the working position, the clamping member rotates to The first position; during the rod unloading process, the sliding shaft will take the center of the drill rod as the center and rotate along the first trajectory until the connecting thread of the drill rod is loosened;

The third diameter is larger than the first diameter and smaller than the second diameter.
The rod unloading pliers according to claim 9, characterized in that, a limiting block is arranged on the swinging member for restricting the second telescopic member.