Iron roughneck tongs

Abstract

The present invention discloses a tongs head device for iron drillers, comprising a plurality of tongs head assemblies arranged in sequence from top to bottom, the tongs head assembly comprising a tongs head clamp, a fixed tongs body and a movable tongs body, a first tongs head is mounted on the fixed tongs body, the fixed tongs body is fixedly mounted on the tongs head clamp; a second tongs head arranged opposite to the first tongs head is mounted on the movable tongs body, the movable tongs body slides along the tongs head clamp, and the movable tongs slide to make the second tongs head move closer to or away from the first tongs head; the adjusting element drives the movable tongs body to slide. The tongs head device for iron drillers of the present invention adjusts the distance between the first tongs head and the second tongs head through a fixed tongs body and a slidable movable tongs body to adapt to drilling tools with different pipe column diameters, is convenient and quick to operate, and does not require a centering device, thereby simplifying the structure.

Description

Technical Field

[0001] The invention relates to the field of iron roughnecks, and in particular to a clamp head device for iron roughnecks. Background Art

[0002] The iron roughneck is an important tool for making and breaking out the drill bit during the automated drilling process. Its one-button automated operation mode greatly improves the safety of drilling operations and reduces the labor intensity of drilling operations.

[0003] The existing iron roughneck generally includes a column assembly, a mechanical arm assembly and a clamp head device. One end of the mechanical arm assembly is connected to the column assembly, and the other end is connected to the clamp head device. The column assembly drives the mechanical arm assembly and the clamp head device to rotate and rise and fall, and the mechanical arm assembly drives the clamp head device to move horizontally and linearly. The clamp head device includes a clamping clamp and a punching clamp. The clamping clamp clamps and fixes the lower pipe column of the drilling tool. The punching clamp clamps the upper pipe column of the drilling tool and then rotates to tighten or break the drilling tool.

[0004] However, the existing iron roughneck clamp device needs to be equipped with a centering device to realize the centering of the iron roughneck relative to the drill, so the structure is complicated and the production efficiency is affected. Moreover, when the diameters of the drills are different, the centering operation of the centering device is more complicated. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides a tongs device for iron roughnecks to adapt to drilling tools with different pipe diameters.

[0006] In order to achieve the above object, the technical solution of the present invention is as follows: A tongs device for iron roughnecks, comprising a plurality of tongs assemblies arranged in sequence from top to bottom, the tongs assembly comprising:

[0007] Clamp head splint;

[0008] A fixed pliers body, on which a first pliers head is mounted, and the fixed pliers body is fixedly mounted on the pliers head clamping plate;

[0009] A movable pliers body, on which a second pliers head arranged opposite to the first pliers head is mounted, the movable pliers body slides along the pliers head clamping plate, and the movable pliers slide to move the second pliers head closer to or away from the first pliers head;

[0010] An adjusting element drives the movable clamp body to slide.

[0011] As a further preferred embodiment of the present invention, the number of the pliers head assemblies is three, the upper pliers head assembly constitutes an upper clamping pliers, the middle pliers head assembly constitutes a punching pliers, and the lower pliers head assembly constitutes a lower clamping pliers, and the pliers head assemblies are connected by a connecting movable assembly.

[0012] As a further preferred embodiment of an embodiment of the present invention, the iron roughneck's clamp head device further includes a punching and buckling cylinder, the punching and buckling pliers are pivotally connected to the connecting movable assembly, and the punching and buckling cylinder drives the punching and buckling pliers to rotate.

[0013] As a further preferred embodiment of the present invention, the punching and fastening cylinder is connected to the punching and fastening pliers through a punching and fastening cylinder support plate.

[0014] As a further preferred embodiment of the present invention, the adjusting element is a nut, and the movable caliper body is provided with an external thread matching the internal thread of the adjusting element, and the adjusting element drives the movable caliper body to slide when rotating.

[0015] As a further preferred embodiment of an embodiment of the present invention, the pliers head assembly further includes a pin shaft penetrating the pliers head clamping plate and the movable pliers body, and the movable pliers body can rotate around the pin shaft.

[0016] As a further preferred embodiment of an embodiment of the present invention, the clamp head assembly further includes a clamping cylinder, and the clamping cylinder drives the movable clamp body to rotate so that the second clamp head cooperates with the first clamp head to clamp or release the drilling tool.

[0017] As a further preferred embodiment of the present invention, the clamping cylinder is connected to the movable caliper body via a clamping cylinder ear plate.

[0018] As a further preferred embodiment of the present invention, the first clamp head is connected to the fixed clamp body via a first clamp head fixing plate, and the second clamp head is connected to the movable clamp body via a second clamp head fixing plate.

[0019] As a further preferred embodiment of the present invention, the opposing surfaces of the first clamp head and the second clamp head are arc surfaces.

[0020] Beneficial effects of the present invention: The iron roughneck's clamp head device of the present invention adjusts the distance between the first clamp head and the second clamp head through a fixed clamp body and a slidable movable clamp body to adapt to drilling tools with different pipe diameters. The operation is convenient and quick, and there is no need to set a centering device, thereby simplifying the structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A top view of the iron roughneck's tongs device of the present invention;

[0022] Figure 2 A rear view of the iron roughneck's tongs device of the present invention;

[0023] Among them: 100, clamp head assembly; 101, clamp head clamp plate; 102, fixed clamp body; 103, movable clamp body; 104, first clamp head; 105, second clamp head; 106, adjusting element; 107, pin shaft; 108, clamping cylinder; 109, clamping cylinder ear plate; 110, first clamp head fixing plate; 111, second clamp head fixing plate; 200, upper clamping clamp; 300, punching clamp; 400, lower clamping clamp; 500, punching cylinder; 600, punching cylinder support plate; 700, connecting movable assembly. DETAILED DESCRIPTION

[0024] The present invention is further described in detail below in conjunction with specific implementation modes.

[0025] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0026] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] like Figure 1 and Figure 2 As shown, the present invention provides a tongs device for iron roughnecks, comprising a plurality of tongs assemblies 100 arranged sequentially from top to bottom.

[0028] The iron roughneck's clamp head device of the present invention is connected to the iron roughneck's mechanical arm assembly through a bearing seat.

[0029] The pliers head assembly 100 includes a pliers head clamping plate 101 , a fixed pliers body 102 , a movable pliers body 103 , a first pliers head 104 , a second pliers head 105 and an adjusting element 106 .

[0030] The fixed clamp body 102 is fixedly mounted on the clamp head clamp plate 101 , and a first clamp head 104 is mounted on the fixed clamp body 102 .

[0031] The movable pliers body 103 slides along the pliers head clamping plate 101. A second pliers head 105 arranged opposite to the first pliers head 104 is mounted on the movable pliers body 103. When the movable pliers slide, the second pliers head 105 moves closer to or away from the first pliers head 104.

[0032] The second clamp head 105 moves toward or away from the first clamp head 104, thereby adjusting the distance between the first clamp head 104 and the second clamp head 105 to adapt to drilling tools with different pipe diameters. The operation is convenient and quick, and no centering device is required, thereby simplifying the structure.

[0033] The function of the adjusting element 106 is to drive the movable clamp body 103 to slide, making the operation more convenient.

[0034] The fixed pliers body 102 , the movable pliers body 103 and the pliers head clamping plate 101 form a pipe pliers structure.

[0035] Specifically, the fixed pliers body 102 is arranged on the right side of the pliers head clamp plate 101, and the first pliers head 104 is installed on the right side of the fixed pliers body 102. The movable pliers body 103 is arranged below the pliers head clamp plate 101, and the movable pliers body 103 can slide linearly relative to the pliers head clamp plate 101, and the sliding direction of the pliers head clamp plate 101 is the left and right direction. Part of the movable pliers body 103 is covered by the pliers head clamp plate 101 directly below the pliers head clamp plate 101, and part of it is exposed to the pliers head clamp plate 101 at an angle below the pliers head clamp plate 101. There are parts of the movable pliers body 103 that are not covered by the pliers head clamp plate 101 on both the left and right sides of the pliers head clamp plate 101.

[0036] The second clamp head 105 is installed at the part of the movable clamp body 103 located on the right side of the clamp head clamp plate 101 and is located on the right side of the first clamp head 104. A gap is provided between the first clamp head 104 and the second clamp head 105 to allow the pipe string of the drilling tool to pass through. The adjusting element 106 is installed at the part of the movable clamp body 103 located on the left side of the clamp head clamp plate 101.

[0037] In one embodiment of the present invention, the clamp head assembly 100 has the function of further clamping the pipe column to prevent the pipe column from loosening after the first clamp head 104 and the second clamp head 105 hold the pipe column. Specifically, the clamp head assembly 100 also includes a pin 107, a clamping cylinder 108 and a clamping cylinder ear plate 109.

[0038] The pin 107 is approximately located at the center of the clamp head assembly 100, and the pin 107 is placed between the first clamp head 104 and the second clamp head 105 in the left-right direction. The pin 107 passes through the clamp head clamp plate 101 and the movable clamp body 103, and the movable clamp body 103 can rotate around the pin 107. The movable clamp body 103 can be provided with a long hole whose length direction is in the left-right direction to avoid the pin 107, so as to prevent the pin 107 from hindering the movable clamp body 103 from sliding.

[0039] The clamping cylinder 108 drives the movable clamp body 103 to rotate so that the second clamp head 105 cooperates with the first clamp head 104 to clamp or release the drilling tool. Specifically, the cylinder body of the clamping cylinder 108 is hinged to the mechanical arm assembly of the iron roughneck, and the piston of the clamping cylinder 108 is hinged to the movable clamp body 103 through the clamping cylinder ear plate 109. The clamping cylinder ear plate 109 can make the connection between the clamping cylinder 108 and the movable clamp body 103 more stable and reliable.

[0040] In one embodiment of the present invention, the clamp head assembly 100 further includes a first clamp head fixing plate 110 and a second clamp head fixing plate 111. The first clamp head 104 is connected to the fixed clamp body 102 through the first clamp head fixing plate 110, and the second clamp head 105 is connected to the movable clamp body 103 through the second clamp head fixing plate 111. The first clamp head fixing plate 110 can improve the stability of the connection between the first clamp head 104 and the fixed clamp body 102. The second clamp head fixing plate 111 can improve the stability of the connection between the second clamp head 105 and the movable clamp body 103.

[0041] Furthermore, in order to facilitate the clamping of the pipe string of the drilling tool, the opposing surfaces of the first clamp head 104 and the second clamp head 105 are arc surfaces, so that the first clamp head 104 and the second clamp head 105 can better fit the surface of the pipe string.

[0042] Furthermore, the adjusting element 106 is a nut, and an outer thread is provided on the outer periphery of the nut. The movable pliers body 103 is provided with an outer thread matching the inner thread of the adjusting element 106. When the adjusting element 106 rotates, the movable pliers body 103 is driven to slide through the principle of thread transmission. The user can move the position of the movable pliers body 103 by rotating the adjusting element 106, thereby changing the distance between the first pliers head 104 and the second pliers head 105, and the operation is simple and convenient.

[0043] In one embodiment of the present invention, there are three clamp head assemblies 100, the upper clamp head assembly 100 constitutes an upper clamp 200, the middle clamp head assembly 100 constitutes a punching clamp 300, and the lower clamp head assembly 100 constitutes a lower clamp 400, and the clamp head assemblies 100 are connected by a connecting movable assembly 700. The positions of the first clamp head 104 of the upper clamp 200 and the first clamp head 104 of the lower clamp 400 are corresponding. At the same time, the punching clamp 300 can rotate between the upper clamp 200 and the lower clamp 400.

[0044] The iron roughneck's clamp head device further includes a punching cylinder 500 , which drives the punching clamp 300 to rotate around the center position between the first clamp head 104 and the second clamp head 105 .

[0045] Specifically, the cylinder body of the punching cylinder 500 is hinged to the mechanical arm assembly of the iron roughneck, and the piston is hinged to the punching pliers 300 through the support plate of the punching cylinder 500. The telescopic direction of the punching cylinder 500 is set at an angle to the left and right directions.

[0046] The tongs head device of the iron roughneck of the present invention is used to realize the buckling and unbuckling of the drilling tool, and the drilling tool includes an upper pipe column located at the upper part and a lower pipe column located at the lower part. The lower clamping pliers 400 fix the lower pipe column, and the punching pliers 300 rotate the upper pipe column. The high torque unbuckling and fixed torque tightening of the upper pipe column of the drilling tool are completed through the cooperation of the lower clamping pliers 400 and the punching pliers 300. The upper clamping pliers 200 fix the upper pipe column, and the punching pliers 300 rotate the lower pipe column. The high torque unbuckling and fixed torque tightening of the lower pipe column of the drilling tool are completed through the cooperation of the upper clamping pliers 200 and the punching pliers 300. The present invention expands the use scope of the iron roughneck by arranging the upper clamping pliers 200 and the lower clamping pliers 400, and the structural design is reasonable, and the working stability of the whole machine is good.

[0047] The iron driller's clamp head device of the present invention has a compact and reasonable structure by setting a pipe clamp type clamp head assembly 100, and does not need to set a centering device, so it has a simple structure and light weight. And when adjusting the positions of the first clamp head 104 and the second clamp head 105 for pipes of different diameters, the adjustment is convenient and quick. The punch clamp 300 is driven to rotate by the punch cylinder 500 inclined to the left and right directions, and the turning angle of the punch clamp 300 reaches 55°, which improves the success rate of one-time punching. The rotation center of the punch clamp 300 is the center of the pipe column, which solves the problem that the rotation center cannot be concentric. And the punch clamp clamping changes in direct proportion to the torque, so there is no need to worry about excessive clamping force damaging the drill column, and the punch clamp clamping stroke is short, which improves efficiency. The present invention can adjust the relative position of the first clamp head 104 and the second clamp head 105 at any time, thereby adjusting the clamp head opening, so that the present invention is applicable to various types of pipe columns.

[0048] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A tongs device for an iron roughneck, characterized in that: The invention comprises a plurality of clamp head assemblies arranged in sequence from top to bottom, and the clamp head assembly comprises: Clamp head splint; A fixed pliers body, on which a first pliers head is mounted, and the fixed pliers body is fixedly mounted on the pliers head clamping plate; A movable pliers body, on which a second pliers head arranged opposite to the first pliers head is mounted, the movable pliers body slides along the pliers head clamping plate, and the movable pliers slide to move the second pliers head closer to or away from the first pliers head; An adjusting element, wherein the adjusting element drives the movable clamp body to slide in a left-right direction; The clamp head assembly further includes a pin that passes through the clamp head clamp plate and the movable clamp body, and the movable clamp body can rotate around the pin. The clamp head assembly further includes a clamping oil cylinder, and the clamping oil cylinder drives the movable clamp body to rotate so that the second clamp head cooperates with the first clamp head to clamp or release the drilling tool. The pin is placed between the first clamp head and the second clamp head in the left-right direction. There are three pliers head assemblies, the upper pliers head assembly constitutes an upper clamping pliers, the middle pliers head assembly constitutes a punching pliers, and the lower pliers head assembly constitutes a lower clamping pliers, and the pliers head assemblies are connected by a connecting movable assembly; The piston of the clamping cylinder is hinged to the movable caliper body through the clamping cylinder ear plate; The first clamp head is connected to the fixed clamp body through a first clamp head fixing plate, and the second clamp head is connected to the movable clamp body through a second clamp head fixing plate; The iron roughneck's pliers head device also includes a punching oil cylinder, which drives the punching pliers to rotate, and the telescopic direction of the punching oil cylinder is set at an angle to the left and right directions.

2. The iron roughneck tongs device according to claim 1, characterized in that: The punching and buckling oil cylinder is connected to the punching and buckling pliers through a punching and buckling oil cylinder supporting plate.

3. The iron roughneck tongs device according to claim 1, characterized in that: The adjusting element is a nut, and the movable pliers body is provided with an external thread matching the internal thread of the adjusting element. When the adjusting element rotates, the movable pliers body is driven to slide.

4. The iron roughneck tongs device according to claim 1, characterized in that: The opposing surfaces of the first clamp head and the second clamp head are arc surfaces.

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