A clamping and shackle device for an iron roughneck and an iron roughneck

Abstract

The present invention relates to a clamping and breaking device for an iron roughneck, comprising: a mounting frame assembly, the mounting frame assembly including an upper curved surface capable of abutting the outer wall of an upper drill rod and a lower curved surface capable of abutting the outer wall of a lower drill rod, the projections of the upper and lower curved surfaces on a horizontal plane overlapping to ensure the coaxiality of the upper and lower curved surfaces, the upper and lower drill rods; a lower clamper, connected to the lower portion of the mounting frame assembly and capable of moving forward and backward relative to the mounting frame assembly; the lower clamper capable of clamping lower drill rods of various diameters; and an upper clamper, connected to the upper portion of the mounting frame assembly and capable of moving forward and backward relative to the mounting frame assembly. The upper clamper can clamp upper drill rods of various diameters and can drive the upper drill rod to rotate relative to the lower drill rod to make or break the rod. The present invention also relates to an iron roughneck. The clamping and breaking device of the present application has the beneficial effect of being able to clamp upper and lower drill rods of different diameters without requiring replacement of the clamping and breaking device, thereby reducing the cost of the clamping and breaking device and simplifying its operation.

Description

Technical Field

[0001] The present invention relates to the technical field of iron roughnecks, and in particular to a clamping and shackle device for an iron roughneck and an iron roughneck. Background Art

[0002] An iron roughneck is a device that can be moved to the location of a drill rod and connect or disconnect two drill rods. The iron roughneck's clamping and disconnecting mechanism is used to clamp the lower and upper drill rods and drive the upper drill rod to rotate one revolution in a first direction, causing the upper drill rod's first hook to connect to the lower drill rod, thus connecting the two drill rods. Alternatively, the clamping and disconnecting mechanism is used to clamp the lower and upper drill rods and drive the upper drill rod to rotate one revolution in the opposite direction of the first direction, causing the upper drill rod's first hook to disconnect from the lower drill rod, thus disconnecting the two drill rods.

[0003] The clamping and shackle devices in the prior art are generally configured as scissor-type structures. When the clamping and shackle devices are retracted, they can clamp the upper drill rod and the lower drill rod. However, the center position of the cylindrical cavity enclosed by the clamping and shackle devices with the scissor-type structure will change during the retraction process, and it cannot be coaxial with drill rods of different diameters, and it is also impossible to clamp drill rods of different diameters. It is necessary to replace the clamping and shackle devices with corresponding ones, which increases the cost of the clamping and shackle devices and makes the operation cumbersome. Summary of the Invention

[0004] (1) Technical issues to be resolved

[0005] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a clamping and shackle device for an iron roughneck and an iron roughneck, which solves the technical problem that the clamping and shackle device for an iron roughneck in the prior art needs to be replaced with a corresponding clamping and shackle device for drill rods of different diameters, resulting in increased cost and complicated operation of the clamping and shackle device.

[0006] (2) Technical solution

[0007] In order to achieve the above objectives, the main technical solutions adopted by the present invention include:

[0008] In a first aspect, the present invention relates to a clamping and shackle device for an iron roughneck, comprising:

[0009] A mounting frame assembly, the mounting frame assembly comprising an upper curved surface capable of abutting against an outer wall of an upper drill rod and a lower curved surface capable of abutting against an outer wall of a lower drill rod, wherein the projections of the upper curved surface and the lower curved surface on a horizontal plane coincide with each other to ensure that the upper curved surface, the lower curved surface, the upper drill rod, and the lower drill rod are coaxial;

[0010] A lower clamp, the lower clamp being movable forward and backward relative to the mounting frame assembly and connected to the lower portion of the mounting frame assembly, the lower clamp being capable of clamping the lower drill rods of various diameters;

[0011] An upper clamp is connected to the upper part of the mounting frame assembly and can move forward and backward relative to the mounting frame assembly. The upper clamp can clamp the upper drill rods of various diameters and can drive the upper drill rod to rotate relative to the lower drill rod to make or break the rod.

[0012] According to the present invention, the upper clamp includes two upper clamping arms, which are arranged opposite to each other. The clamping ends of the two upper clamping arms can clamp the upper drill rods of various diameters and can drive the upper drill rod to rotate relative to the lower drill rod to make or break the thread.

[0013] The lower clamp comprises two lower clamping arms, which are arranged opposite to each other, and the clamping ends of the two lower clamping arms can clamp the lower drill rods of various diameters.

[0014] According to the present invention, the upper holder further comprises:

[0015] an upper center rod vertically arranged at the rotation connection of the middle portion of the two upper clamping arms in the length direction, and upper side rods vertically arranged on the two upper clamping arms respectively;

[0016] The lower holder further comprises:

[0017] A lower center rod vertically arranged at the rotation connection of the middle portion of the two lower clamping arms in the length direction, and lower side rods vertically arranged on the two lower clamping arms respectively;

[0018] The mounting frame assembly includes:

[0019] a mounting frame, and an upper centering plate fixedly connected to the upper portion of the mounting frame, the upper arc surface being provided on the upper centering plate, an upper center hole and two upper side holes being further provided on the upper centering plate, the upper center rod being inserted into the upper center hole, and the two upper side rods being inserted into the two upper side holes in a one-to-one correspondence; when the clamping ends of the two upper clamping arms are opened or contracted, the upper center rod can move forward and backward synchronously relative to the upper center hole and the two upper side rods can move forward and backward synchronously relative to the corresponding upper side holes;

[0020] A lower centering plate is fixedly connected to the lower part of the mounting frame, the lower arc surface is arranged on the lower centering plate, and a lower center hole and two lower side holes are also arranged on the lower center plate, the lower center rod is inserted into the lower center hole, and the two lower side rods are inserted into the two lower side holes one by one; when the clamping ends of the two lower clamping arms are opened or contracted, the lower center rod can move forward and backward synchronously relative to the lower center hole and the two lower side rods can move forward and backward synchronously relative to the corresponding lower side holes.

[0021] According to the present invention, the top of the upper centering plate protrudes upward around the upper arc surface to form an arc-shaped boss;

[0022] The upper clamp further comprises an upper positioning half ring, the upper positioning half ring being fixedly connected to the mounting frame, and an arc-shaped groove being provided at the bottom of the upper positioning half ring;

[0023] The arc-shaped boss is inserted into the arc-shaped groove, and the projections of the upper arc surface and the arc-shaped inner side wall of the upper positioning semi-ring on the horizontal plane coincide with each other.

[0024] According to the present invention, the upper holder further comprises:

[0025] an upper clamping drive cylinder connected to the driving ends of the two upper clamping arms, and configured to drive the driving ends of the two upper clamping arms to open or retract, thereby driving the clamping ends of the two upper clamping arms to retract or open;

[0026] A buckle-making and buckle-breaking driver, the buckle-making and buckle-breaking driver being correspondingly connected to the two upper clamping arms and used for driving the two upper clamping arms to synchronously rotate relative to the lower clamping device to buckle or break the buckle;

[0027] The lower holder further comprises:

[0028] The lower clamping drive cylinder is connected to the driving ends of the two lower clamping arms and is used to drive the driving ends of the two lower clamping arms to open or contract to drive the clamping ends of the two lower clamping arms to contract or open.

[0029] According to the present invention, the make-up and break-down driver comprises a first make-up and break-down driver and a second make-up and break-down driver arranged opposite to each other;

[0030] The main body of the first upper shackle driving member is arranged on the corresponding lower clamping arm, and the driving end of the first upper shackle driving member is connected to the corresponding upper clamping arm; the main body of the second upper shackle driving member is arranged on the corresponding upper clamping arm, and the driving end of the second upper shackle driving member is connected to the corresponding lower clamping arm;

[0031] When the driving ends of the first buckle-making and the second buckle-making and the buckle-making driving members are extended or shortened, the two upper clamping arms are synchronously rotated relative to the lower clamping arm to make or break the buckle.

[0032] According to the present invention, the mounting frame assembly further comprises:

[0033] A support frame is fixedly provided with a tapered pin extending forward and backward, the tapered pin is inserted into a tapered pin hole on the upper part of the mounting frame, and the mounting frame can rotate around the tapered pin relative to the support frame.

[0034] According to the present invention, the mounting frame assembly further includes a front and rear floating unit, and the front and rear floating unit includes:

[0035] A vertical rod fixedly connected to the support frame;

[0036] A lifting assembly sleeved on the outer periphery of the vertical rod and capable of lifting and moving relative to the vertical rod;

[0037] The first end is rotatably connected to the support frame, and the second end is rotatably connected to a pressure rod of the lifting assembly. The first end of the pressure rod is used to abut against the lower side surface of the mounting frame.

[0038] According to the present invention, the lower end of the vertical rod body extends radially outward to form an annular limiting portion;

[0039] The lifting assembly comprises:

[0040] A sleeve is sleeved on the outer periphery of the vertical rod and can be lifted and lowered relative to the vertical rod body, and an upper limit ring and a lower limit ring are respectively provided on the upper and lower parts of the inner peripheral wall of the sleeve, and the lower limit ring can abut against the top of the annular limit portion;

[0041] A spring is located between the sleeve and the vertical rod, with two ends of the spring respectively abutting against the upper limit ring and the lower limit ring.

[0042] In a second aspect, the present invention also relates to an iron roughneck, comprising the aforementioned clamping and shackle device for the iron roughneck;

[0043] The assembly further includes a spinner device, the spinner device being located above the upper clamp and connected to the mounting frame assembly, the spinner device being used to clamp the upper drill rod and drive the upper drill rod to rotate relative to the lower drill rod after being made up to connect the lower drill rod, or drive the upper drill rod to rotate relative to the lower drill rod after being broken off to remove the lower drill rod;

[0044] The iron roughneck also includes:

[0045] A horizontal driver, wherein a first end of the horizontal driver is connected to the mounting frame and drives the clamping and shackle device and the screwing device to move horizontally synchronously through the mounting frame;

[0046] A lifting driver is connected to the second end of the horizontal driver, and drives the clamping and shackle device and the screwing device to move up and down synchronously through the horizontal driver.

[0047] (3) Beneficial effects

[0048] The beneficial effects of the present invention are as follows: the clamping and shackle device of the iron roughneck of the present invention has the following advantages:

[0049] When making or breaking the upper drill rod, the upper curved surface of the mounting frame assembly abuts against the outer wall of the upper drill rod, while the lower curved surface of the mounting frame assembly abuts against the outer wall of the lower drill rod. The horizontal projections of the upper and lower curved surfaces coincide, ensuring that the upper and lower curved surfaces, the upper and lower drill rods, and the upper and lower drill rods are coaxial. The upper clamp then moves forward and backward relative to the mounting frame assembly to adjust to being coaxial with the upper drill rod and clamping it, while the lower clamp moves forward and backward relative to the mounting frame assembly to adjust to being coaxial with the lower drill rod and clamping it, thereby accommodating upper and lower drill rods of different diameters. Subsequently, the upper clamp drives the upper drill rod to rotate relative to the lower drill rod to make or break the upper and lower drill rods. Therefore, the clamping and breaking device of the present application can clamp upper and lower drill rods of different diameters without requiring replacement of the clamping and breaking device, reducing the cost of the clamping and breaking device and simplifying operation. At the same time, the upper arc surface of the mounting frame assembly abuts against the outer wall of the upper drill rod, and the lower arc surface of the mounting frame assembly abuts against the outer wall of the lower drill rod. The projections of the upper arc surface and the lower arc surface on the horizontal plane coincide with each other, which can ensure that the upper drill rod and the lower drill rod are coaxial, which is conducive to the action of making or breaking the buckle between the upper drill rod and the lower drill rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] Figure 1 is a perspective schematic diagram of the clamping and shackle device of the iron roughneck of the present invention;

[0051] Figure 2 for Figure 1 Exploded diagram of the mounting frame, support frame, and part of the horizontal drive;

[0052] Figure 3 for Figure 1 A partial cross-sectional view of the mounting frame, upper clamp, lower clamp and support frame after assembly;

[0053] Figure 4 for Figure 3 A partial schematic diagram of

[0054] Figure 5 for Figure 1 Assembly drawing of the mounting frame, upper clamp and lower clamp in FIG;

[0055] Figure 6 for Figure 5 A three-dimensional schematic diagram of the upper positioning half ring in FIG;

[0056] Figure 7 for Figure 5 Assembly drawing of the upper and lower clamps in FIG;

[0057] Figure 8 for Figure 7 Schematic diagram of the decomposition;

[0058] Figure 9 for Figure 8 A bottom view of the lower clamp in FIG;

[0059] Figure 10 It is a three-dimensional schematic diagram of the turn-button device.

[0060] [Description of Reference Numerals]

[0061] 1: Clamping and shackle device; 111: Mounting frame; 1111: Tapered pin hole; 1112: Arc-shaped plug-in portion; 112: Upper centering plate; 1121: Upper arc surface; 1122: Upper center hole; 1123: Upper side hole; 1124: Arc-shaped boss; 113: Lower centering plate; 1131: Lower arc surface; 1133: Lower center hole; 1134: Lower side hole; 114: Support frame; 115: Tapered pin shaft; 116: Front and rear floating units; 1161: Vertical rod; 11611: Annular limiter; 11621: Sleeve; 11622: Upper limit ring; 11623: Lower limit Positioning ring; 11624: Spring; 1163: Pressure rod; 12: Upper clamp; 121: Upper clamping arm; 1211: Upper slips; 122: Upper center rod; 123: Upper side rod; 124: Upper positioning semi-ring; 1241: Arc groove; 1242: Circumferential groove; 1243: Arc inner wall; 125: Upper clamping drive cylinder; 1261: First upper shackle drive member; 1262: Second upper shackle drive member; 13: Lower clamp; 131: Lower clamping arm; 1311: Lower slips; 132: Lower center rod; 133: Lower side rod; 134: Lower clamping drive cylinder;

[0062] 2: horizontal drive; 21: connecting rod mechanism; 22: horizontal drive cylinder;

[0063] 3: lifting drive; 31: mast; 32: slide;

[0064] 4: Spinning device; 42: Spinning arm; 43: Opening and closing drive member; 44: Rotating drive member; 441: Roller; 442: Motor. DETAILED DESCRIPTION

[0065] In order to better explain the present invention and facilitate understanding, the present invention is described in detail below with reference to the accompanying drawings and through specific embodiments. Figure 1 The relative positions of the clamping and shackle device 1 and the lifting drive 3 are used as a reference, wherein the clamping and shackle device 1 is oriented "forward" and the lifting drive 3 is oriented "backward". Figure 1 The relative positions of the two upper clamping arms 121 of the upper clamp 12 of the middle clamping shackle device 1 are used as a reference.

[0066] Example 1

[0067] See also Figure 1-9The clamping and shackle device for an iron roughneck proposed in an embodiment of the present invention includes a mounting frame assembly, an upper clamp 12 and a lower clamp 13.

[0068] The mounting frame assembly includes an upper curved surface 1121 capable of abutting the outer wall of the upper drill rod, and a lower curved surface 1131 capable of abutting the outer wall of the lower drill rod. The horizontal projections of the upper curved surface 1121 and the lower curved surface 1131 overlap to ensure that the upper curved surface 1121, the lower curved surface 1131, the upper drill rod, and the lower drill rod are coaxial. The lower clamp 13 is connected to the lower portion of the mounting frame assembly and can move forward and backward relative to the mounting frame assembly. The lower clamp 13 can clamp lower drill rods of various diameters. The upper clamp 12 is connected to the upper portion of the mounting frame assembly and can move forward and backward relative to the mounting frame assembly. The upper clamp 12 can clamp upper drill rods of various diameters and can drive the upper drill rod to rotate relative to the lower drill rod to make or break the thread.

[0069] When attaching or detaching an upper drill rod, the clamping and detaching device 1 has its upper curved surface 1121 abut against the outer wall of the upper drill rod, while its lower curved surface 1131 abuts against the outer wall of the lower drill rod. The horizontal projections of the upper and lower curved surfaces 1121 and 1131 coincide, ensuring the coaxiality of the upper and lower drill rods. The upper clamp 12 then moves back and forth relative to the mounting assembly to adjust to coaxiality with and clamp the upper drill rod, while the lower clamp 13 moves back and forth relative to the mounting assembly to adjust to coaxiality with and clamp the lower drill rod, allowing for clamping of upper and lower drill rods of varying diameters. Subsequently, the upper clamp 12 drives the upper drill rod to rotate relative to the lower drill rod for attaching or detaching. Therefore, the clamping and detaching device 1 of the present application can clamp upper and lower drill rods of varying diameters without requiring replacement of the clamping and detaching device 1, reducing the cost of the clamping and detaching device 1 and simplifying its operation. At the same time, the upper arc surface 1121 of the mounting frame assembly abuts against the outer wall of the upper drill rod, and the lower arc surface 1131 of the mounting frame assembly abuts against the outer wall of the lower drill rod. The projections of the upper arc surface 1121 and the lower arc surface 1131 on the horizontal plane coincide with each other, which can ensure that the upper drill rod and the lower drill rod are coaxial, which is conducive to the action of making or breaking the buckle between the upper drill rod and the lower drill rod.

[0070] Furthermore, the upper clamp 12 includes two upper clamping arms 121. These arms 121 are positioned opposite each other, and their clamping ends are capable of gripping upper drill rods of various diameters and rotating them relative to the lower drill rod for make-up and break-out. The lower clamp 13 includes two lower clamping arms 131. These arms 131 are positioned opposite each other, and their clamping ends are capable of gripping lower drill rods of various diameters.

[0071] Specifically, upper slips 1211 are provided on opposing surfaces of the clamping ends of the two upper clamping arms 121. The upper slips 1211 are used to abut against the outer wall of the upper drill rod to clamp the upper drill rod. Lower slips 1311 are provided on opposing surfaces of the clamping ends of the two lower clamping arms 131. The lower slips 1311 are used to abut against the outer wall of the lower drill rod to clamp the lower drill rod. During the contraction process of the scissor-type clamping and shackle device 1 of the prior art, the center position of the cylindrical cavity enclosed by the upper slips 1211 on the two upper clamping arms 121 and the lower slips 1311 on the two lower clamping arms 131 will change, making it impossible to be coaxial with drill rods of different diameters and, therefore, unable to clamp drill rods of different diameters. Therefore, for drill rods of different diameters, different clamping and shackle devices 1 need to be replaced to ensure that the two upper slips 1211 and the two lower slips 1311 of the clamping and shackle device 1 can respectively clamp the upper drill rod and the lower drill rod during the contraction process, which increases the cost of the clamping and shackle device and makes the operation complicated. However, the upper clamp 12 and the lower clamp 13 of the clamping and shackle device 1 of the present application can both move forward and backward relative to the mounting frame assembly during the contraction process to adjust the upper clamp 12 to be coaxial with the upper drill rod and the two upper slips 1211 of the upper clamp 12 clamp the upper drill rod, while the lower clamp 13 is coaxial with the lower drill rod and the two lower slips 1311 of the lower clamp 13 clamp the lower drill rod. In other words, the clamping and shackle device 1 of the present application can clamp upper drill rods and lower drill rods of different diameters without the need to replace the clamping and shackle device 1, which reduces the cost of the clamping and shackle device 1 and simplifies the operation.

[0072] Furthermore, the upper clamper 12 further includes an upper clamping drive cylinder 125 and an upper and lower breakout driver.

[0073] The upper clamping drive cylinder 125 is connected to the driving ends of the two upper clamping arms 121 and is used to drive the driving ends of the two upper clamping arms 121 to expand or contract, thereby causing the clamping ends of the two upper clamping arms 121 to contract or expand. The clamping ends of the two upper clamping arms 121 contract to clamp the upper drill pipe. The make-up and break-out actuator is connected to the two upper clamping arms 121 and is used to drive the two upper clamping arms 121 to rotate synchronously relative to the lower clamp 13 to make or break the bolt.

[0074] Specifically, the main body of the upper clamping drive cylinder 125 is connected to the driving end of one upper clamping arm 121, and the driving end of the upper clamping drive cylinder 125 is connected to the driving end of the other upper clamping arm 121. When the driving end of the upper clamping drive cylinder 125 is extended or shortened, the clamping ends of the two upper clamping arms 121 are contracted or expanded.

[0075] Specifically, the make-up and break-down driver includes a first make-up and break-down driver 1261 and a second make-up and break-down driver 1262 that are arranged opposite to each other.

[0076] The main body of the first upper and lower clamping arms 131 is provided with a driving end of the first upper and lower clamping arms 121. The main body of the second upper and lower clamping arms 1262 is provided with a driving end of the second upper and lower clamping arms 131. When the driving ends of the first and second upper and lower clamping arms 1261, 1262 are extended or shortened, the two upper and lower clamping arms 121 are synchronously rotated relative to the lower clamping arms 131 in a first direction to fasten the fastener, or rotated in the opposite direction of the first direction to detach the fastener.

[0077] More specifically, the first make-up / break-down driving member 1261 and the second make-up / break-down driving member 1262 are both hydraulic cylinders.

[0078] Furthermore, the lower clamper 13 also includes a lower clamping drive cylinder 134 .

[0079] The lower clamping drive cylinder 134 is connected to the driving ends of the two lower clamping arms 131, and is used to drive the driving ends of the two lower clamping arms 131 to open or contract to drive the clamping ends of the two lower clamping arms 131 to contract or open, and the clamping ends of the two lower clamping arms 131 contract to clamp the lower drill rod.

[0080] Specifically, the main body of the lower clamping drive cylinder 134 is connected to the driving end of one lower clamping arm 131, and the driving end of the lower clamping drive cylinder 134 is connected to the driving end of the other lower clamping arm 131. When the driving end of the lower clamping drive cylinder 134 extends or contracts, the clamping ends of the two lower clamping arms 131 contract or expand.

[0081] Furthermore, the upper clamp 12 further includes an upper center rod 122 vertically arranged at the rotation connection of the middle portion of the two upper clamping arms 121 in the length direction, and upper side rods 123 vertically arranged on the two upper clamping arms 121 respectively.

[0082] The lower clamper 13 further includes a lower center rod 132 vertically disposed at a rotational connection at the middle of the two lower clamping arms 131 in the longitudinal direction, and lower side rods 133 vertically disposed on the two lower clamping arms 131 .

[0083] Furthermore, the mounting frame assembly includes a mounting frame 111 , an upper centering plate 112 fixedly connected to an upper portion of the mounting frame 111 , and a lower centering plate 113 fixedly connected to a lower portion of the mounting frame 111 .

[0084] The upper centering plate 112 is provided with an upper curved surface 1121, an upper center hole 1122, and two upper side holes 1123. The upper center rod 122 is inserted into the upper center hole 1122, and the two upper side rods 123 are inserted into the two upper side holes 1123 in a one-to-one correspondence. When the clamping ends of the two upper clamping arms 121 are opened or retracted, the upper center rod 122 can move synchronously relative to the upper center hole 1122, and the two upper side rods 123 can move synchronously relative to the corresponding upper side holes 1123, so that the upper clamp 12 can move forward and backward relative to the mounting frame assembly to adjust to coaxiality with upper drill rods of different diameters and clamp the upper drill rods.

[0085] The lower centering plate 113 is provided with a lower curved surface 1131, a lower center hole 1133, and two lower side holes 1134. The lower center rod 132 is inserted into the lower center hole 1133, and the two lower side rods 133 are inserted into the two lower side holes 1134 in a one-to-one correspondence. When the clamping ends of the two lower clamping arms 131 are expanded or contracted, the lower center rod 132 can move synchronously relative to the lower center hole 1133 and the two lower side rods 133 can move synchronously relative to the corresponding lower side holes 1134, thereby allowing the lower clamp 13 to move forward and backward relative to the mounting frame assembly to adjust to coaxiality with and clamp lower drill rods of different diameters.

[0086] Furthermore, the specific connection method between the upper centering plate 112 and the mounting frame 111 and the specific connection method between the lower centering plate 113 and the mounting frame 111 are as follows:

[0087] The top of the upper centering plate 112 protrudes upward around the upper arc surface 1121 to form an arc-shaped boss 1124 .

[0088] The upper clamp 12 also includes an upper positioning semi-ring 124. The upper positioning semi-ring 124 is fixedly connected to the mounting frame 111, and an arc-shaped groove 1241 is provided at the bottom of the upper positioning semi-ring 124. The arc-shaped boss 1124 is inserted into the arc-shaped groove 1241 to fix the upper centering plate 112 to the upper positioning semi-ring 124, and then fix the upper centering plate 112 to the mounting frame 111. The upper centering plate 112 and the upper positioning semi-ring 124 are detachably connected, and the assembly and disassembly method is simple and convenient. When in use, the upper drill rod can rest against the upper curved surface 1121 and the curved inner side wall 1243 of the upper positioning semi-ring 124, and the projections of the upper curved surface 1121, the curved inner side wall 1243 of the upper positioning semi-ring 124 and the lower curved surface 1131 on the horizontal plane coincide to ensure that the upper drill rod and the lower drill rod are coaxial.

[0089] Specifically, a circumferential groove 1242 is provided on the outer peripheral wall of the upper positioning half ring 124 .

[0090] Specifically, the clamping end of the mounting frame 111 is provided with an arcuate plug-in portion 1112. The circumferential groove 1242 of the upper positioning half ring 124 is plugged into the arcuate plug-in portion 1112 to fix the upper positioning half ring 124 to the mounting frame 111, and the two are detachably connected, and the assembly and disassembly method is simple and convenient.

[0091] Specifically, the lower centering plate 113 is detachably connected to the mounting frame 111 by bolts.

[0092] Furthermore, to be suitable for drill rods tilted left and right, the mounting frame assembly further includes a support frame 114 .

[0093] A tapered pin 115 extending forward and backward is fixedly provided on the support frame 114 . The tapered pin 115 is inserted into a tapered pin hole 1111 on the upper portion of the mounting frame 111 . The mounting frame 111 can rotate around the tapered pin 115 relative to the support frame 114 .

[0094] Since the upper drill rod and the lower drill rod are difficult to maintain a vertical state, when the upper drill rod and the lower drill rod tilt left or right, the upper drill rod and the lower drill rod can drive the upper centering plate 112, the upper positioning half ring 124 and the lower centering plate 113 respectively to abut against the upper centering plate 112, the upper positioning half ring 124 and the lower centering plate 113 to drive the upper centering plate 112, the upper positioning half ring 124, the upper clamp 12, the lower centering plate 113, the lower clamp 13 and the mounting frame 111 to rotate synchronously relative to the support frame 114 around the tapered pin shaft 115, so that the upper drill rod is coaxial with the upper centering plate 112 and the upper positioning half ring 124, and the lower drill rod is coaxial with the lower centering plate 113, so that the upper clamp 12 and the lower clamp 13 can respectively clamp the upper drill rod and the lower drill rod tilted left or right.

[0095] Furthermore, to be suitable for drill rods tilted forward and backward, the mounting frame assembly further includes a front and rear floating unit 116 .

[0096] The front and rear floating unit 116 includes a vertical rod 1161 fixedly connected to the support frame 114, a lifting assembly sleeved around the outer periphery of the vertical rod 1161 and capable of rising and falling relative to the vertical rod 1161, and a pressure rod 1163 with a first end pivotally connected to the support frame 114 and a second end pivotally connected to the lifting assembly. The first end of the pressure rod 1163 is configured to abut against the lower side of the mounting frame 111.

[0097] When using, Figure 10 For reference, when the lower part of the mounting frame 111 moves toward the support frame 114, the lower side surface of the mounting frame 111 abuts against the second end of the pressure rod 1163, and drives the second end of the pressure rod 1163 to rotate counterclockwise around the first end, and the second end of the pressure rod 1163 drives the lifting assembly to rise relative to the vertical rod body 1161.

[0098] When the lower portion of the mounting frame 111 moves away from the support frame 114 , the lifting assembly descends and drives the second end of the pressing rod 1163 to rotate clockwise around the first end, and the second end of the pressing rod 1163 abuts against the lower side surface of the mounting frame 111 .

[0099] Since the upper drill rod and the lower drill rod are difficult to maintain a vertical state, when the upper drill rod and the lower drill rod tilt forward and backward, the upper drill rod and the lower drill rod can drive the lower part of the mounting frame 111 to move toward or away from the support frame 114 through the upper centering plate 112, the upper positioning half ring 124 and the lower centering plate 113 respectively abutting against them, and make the first end of the pressure rod 1163 of the front and rear floating units 116 press and support the lower side of the mounting frame 111 to ensure that the upper drill rod is coaxial with the upper arc surface 1121 of the upper centering plate 112 and the arc-shaped inner wall 1243 of the upper positioning half ring 124, and the lower drill rod is coaxial with the lower arc surface 1131 of the lower centering plate 113, so that the upper clamp 12 and the lower clamp 13 can respectively clamp the upper drill rod and the lower drill rod tilted forward and backward.

[0100] Specifically, the lower end of the vertical rod 1161 extends radially outward to form an annular limiting portion 11611 .

[0101] Specifically, the lifting assembly includes a sleeve 11621 and a spring 11624 .

[0102] Sleeve 11621 is sleeved around the outer circumference of vertical rod 1161 and is capable of rising and falling relative to vertical rod 1161. Upper and lower limit rings 11622 and 11623 are respectively provided on the upper and lower portions of the inner circumferential wall of sleeve 11621. Lower limit ring 11623 is capable of abutting against the top of annular limit portion 11611, which is used to limit the downward position of sleeve 11621. Spring 11624 is located between sleeve 11621 and vertical rod 1161, with its ends abutting against upper and lower limit rings 11622 and 11623, respectively.

[0103] During use, when the lower part of the mounting frame 111 moves toward the support frame 114, the lower part of the mounting frame 111 abuts against the second end of the pressure rod 1163, and drives the second end of the pressure rod 1163 to rotate counterclockwise around the first end. The second end of the pressure rod 1163 drives the sleeve 11621 to rise relative to the vertical rod body 1161. At this time, the spring 11624 contracts.

[0104] When the lower part of the mounting bracket 111 moves away from the support bracket 114, the spring 11624 rebounds and drives the sleeve 11621 to descend relative to the vertical rod body 1161. The sleeve 11621 drives the second end of the pressure rod 1163 to rotate clockwise around the first end, and the second end of the pressure rod 1163 rests on the lower part of the mounting bracket 111.

[0105] Example 2

[0106] This embodiment provides an iron roughneck, comprising the iron roughneck clamping and shackle device 1 of the first embodiment.

[0107] Furthermore, the iron roughneck also includes a spinner device 4, which is located above the upper clamp 12 and connected to the mounting frame 111 of the mounting frame assembly. The spinner device 4 is used to clamp the upper drill rod and drive the upper drill rod after being screwed on to rotate relative to the lower drill rod to connect the lower drill rod, or drive the upper drill rod after being unhooked to rotate relative to the lower drill rod to remove the lower drill rod.

[0108] Specifically, the screw-on device 4 includes a fixed arm, two oppositely disposed screw-on arms 42 , and two opening and closing driving members 43 .

[0109] The fixed arm is fixedly connected to the top of the mounting bracket 111. Two rotating drive members 44 are spaced apart on the left and right sides of the fixed arm. The first ends of two rotating arms 42 are rotationally connected to the left and right ends of the fixed arm, respectively. The second ends of the two rotating arms 42 are each provided with a rotating drive member 44. The main bodies of two opening and closing drive members 43 are rotationally connected to the left and right ends of the fixed arm, respectively. The driving ends of the two opening and closing drive members 43 are rotationally connected to the first ends of the two rotating arms 42, respectively.

[0110] During use, the spinner device 4 can rotate left and right, or forward and backward, with the mounting bracket 111, so that the cavity enclosed by the two spinner arms 42 and the fixed arm is coaxial with the upper drill rod to be clamped. Subsequently, the driving ends of the two opening and closing actuators 43 extend and cause the second ends of the two spinner arms 42 to retract, allowing the two spinner arms 42 and the fixed arm to clamp the outer wall of the upper drill rod. After the upper clamp 12 rotates the upper drill rod relative to the lower drill rod to attach or detach the rod, the rotating actuators 44 on the two spinner arms 42 and the fixed arm can then drive the upper drill rod to rotate relative to the lower drill rod to connect or detach the lower drill rod.

[0111] Specifically, the rotation driving member 44 includes a roller 441 and a motor 442 .

[0112] The axially vertical roller 441 is rotatably arranged at the second end of the fixed arm or the rotary arm 42. The main body of the motor 442 is fixedly connected to the second end of the fixed arm or the rotary arm 42, and the driving end of the motor 442 is fixedly connected to the roller 441.

[0113] When the two screw-in arms 42 and the fixed arm clamp the outer wall of the upper drill rod, the motor 442 on the fixed arm and the motors 442 on the two screw-in arms 42 can synchronously drive the corresponding rollers 441 to rotate in the same direction, thereby driving the upper drill rod to rotate relative to the lower drill rod to make or break the screw.

[0114] Furthermore, the iron roughneck further includes a horizontal drive 2 and a lifting drive 3 .

[0115] The first end of the horizontal driver 2 is connected to the mounting frame 111, and drives the clamping and shackle device 1 to move horizontally through the mounting frame 111. The lifting driver 3 is connected to the second end of the horizontal driver 2, and drives the clamping and shackle device 1 to move up and down through the horizontal driver 2.

[0116] During use, the lifting drive 3 drives the clamping and shackle device 1 to move up and down through the horizontal drive 2, and the horizontal drive 2 drives the clamping and shackle device 1 to move horizontally through the mounting frame 111, so as to move the clamping and shackle device 1 to the positions corresponding to the upper drill rod and the lower drill rod.

[0117] Specifically, the first end of the horizontal driver 2 rotates to connect to the upper portion of the support frame 114 to connect to the mounting frame 111 through the support frame 114 .

[0118] Specifically, the horizontal driver 2 includes a connecting rod mechanism 21 and a horizontal driving cylinder 22 .

[0119] The connecting rod mechanism 21 is a four-bar linkage, and the horizontal drive cylinder 22 is connected to the connecting rod mechanism 21. The horizontal drive cylinder 22 drives the connecting rod mechanism 21 to extend or contract in the horizontal direction, so that the first end of the connecting rod mechanism 21 drives the clamping and shackle device 1 and the screwing device 4 to move horizontally synchronously through the mounting bracket 111.

[0120] Specifically, the lifting drive 3 includes a mast 31 , a slide 32 and a lifting drive cylinder.

[0121] Mast 31 is vertically mounted and fixed to a support surface. Slide 32 is slidably mounted on mast 31 and connected to the second end of linkage 21. The main body of the lift drive cylinder is mounted on mast 31, with the drive end of the lift drive cylinder connected to slide 32.

[0122] During use, the lifting drive cylinder drives the slide 32 to move up and down along the mast 31, and the slide 32 drives the connecting rod mechanism 21, the clamping and shackle device 1 and the screwing device 4 to move horizontally synchronously.

[0123] In the description of this specification, the terms "one embodiment", "some embodiments", "embodiments", "examples", "specific examples" or "some examples" refer to the specific features, structures, materials or characteristics described in conjunction with the embodiment or example and included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification and features of different embodiments or examples, unless they are mutually inconsistent.

[0124] Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. A person skilled in the art may alter, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A clamping and shackle device for iron roughnecks, characterized in that: include: A mounting frame assembly, the mounting frame assembly comprising an upper curved surface (1121) capable of abutting against an outer wall of an upper drill rod and a lower curved surface (1131) capable of abutting against an outer wall of a lower drill rod, wherein projections of the upper curved surface (1121) and the lower curved surface (1131) on a horizontal plane coincide with each other to ensure that the upper curved surface (1121), the lower curved surface (1131), the upper drill rod, and the lower drill rod are coaxial; A lower clamp (13), the lower clamp (13) being connected to the lower portion of the mounting frame assembly and being capable of moving forward and backward relative to the mounting frame assembly, the lower clamp (13) being capable of clamping the lower drill rods of various diameters; An upper clamp (12), the upper clamp (12) being connected to the upper portion of the mounting frame assembly and capable of moving forward and backward relative to the mounting frame assembly, the upper clamp (12) being capable of clamping upper drill rods of various diameters and being capable of driving the upper drill rod to rotate relative to the lower drill rod to make or break the rod; The upper clamp (12) comprises two upper clamping arms (121), and the two upper clamping arms (121) are arranged opposite to each other; the lower clamp (13) comprises two lower clamping arms (131), and the two lower clamping arms (131) are arranged opposite to each other; The upper clamp (12) further comprises: an upper center rod (122) vertically arranged at a rotation connection at the middle of the length direction of the two upper clamping arms (121), and upper side rods (123) vertically arranged on the two upper clamping arms (121); The lower clamp (13) further comprises: a lower center rod (132) vertically arranged at a rotation connection at the middle of the length direction of the two lower clamping arms (131), and lower side rods (133) vertically arranged on the two lower clamping arms (131); The mounting frame assembly includes: A mounting frame (111), and an upper centering plate (112) fixedly connected to the upper portion of the mounting frame (111), wherein the upper arc surface (1121) is provided on the upper centering plate (112), and an upper center hole (1122) and two upper side holes (1123) are further provided on the upper centering plate (112), wherein the upper center rod (122) is inserted into the upper center hole (1122), and the two upper side rods (123) are inserted into the two upper side holes (1123) in a one-to-one correspondence. The upper drill rod (1123) is provided with a plurality of upper clamping arms (121); when the clamping ends of the two upper clamping arms (121) are opened or contracted, the upper center rod (122) can move relative to the upper center hole (1122) and the two upper side rods (123) can move synchronously forward and backward relative to the corresponding upper side holes (1123), so that the clamping ends of the two upper clamping arms (121) can clamp the upper drill rods of various diameters and can drive the upper drill rods to rotate relative to the lower drill rod to make or break the screw. A lower centering plate (113) is fixedly connected to the lower part of the mounting frame (111), the lower arc surface (1131) is provided on the lower centering plate (113), and a lower center hole (1133) and two lower side holes (1134) are also provided on the lower centering plate (113), the lower center rod (132) is inserted into the lower center hole (1133), and the two lower side rods (133) are inserted into the two lower side holes (1134) in a one-to-one correspondence; when the clamping ends of the two lower clamping arms (131) are opened or contracted, the lower center rod (132) can move forward and backward relative to the lower center hole (1133) and the two lower side rods (133) can move synchronously relative to the corresponding lower side holes (1134), so that the clamping ends of the two lower clamping arms (131) can clamp the lower drill rods of various diameters.

2. The iron roughneck's clamping and shackle device according to claim 1, wherein: The top of the upper centering plate (112) protrudes upward around the upper arc surface (1121) to form an arc-shaped boss (1124); The upper clamp (12) further comprises an upper positioning half ring (124), wherein the upper positioning half ring (124) is fixedly connected to the mounting frame (111), and an arc-shaped groove (1241) is provided at the bottom of the upper positioning half ring (124); The arc-shaped boss (1124) is inserted into the arc-shaped groove (1241), and the projections of the upper arc surface (1121) and the arc-shaped inner side wall (1243) of the upper positioning semi-ring (124) on the horizontal plane coincide with each other.

3. The iron roughneck's clamping and shackle device according to claim 1, wherein: The upper holder (12) further comprises: an upper clamping drive oil cylinder (125), the upper clamping drive oil cylinder (125) being connected to the driving ends of the two upper clamping arms (121) and being used to drive the driving ends of the two upper clamping arms (121) to open or contract, thereby driving the clamping ends of the two upper clamping arms (121) to contract or open; A buckle-on / off driver, the buckle-on / off driver being correspondingly connected to the two upper clamping arms (121) and used for driving the two upper clamping arms (121) to synchronously rotate relative to the lower clamp (13) to buckle up or buckle down; The lower holder (13) further comprises: A lower clamping drive cylinder (134) is connected to the driving ends of the two lower clamping arms (131) and is used to drive the driving ends of the two lower clamping arms (131) to open or contract, thereby driving the clamping ends of the two lower clamping arms (131) to contract or open.

4. The iron roughneck's clamping and shackle device according to claim 3, wherein: The make-up and break-out driver comprises a first make-up and break-out driver (1261) and a second make-up and break-out driver (1262) that are arranged opposite to each other; The main body of the first upper shackle driving member (1261) is arranged on the corresponding lower clamping arm (131), and the driving end of the first upper shackle driving member (1261) is connected to the corresponding upper clamping arm (121); the main body of the second upper shackle driving member (1262) is arranged on the corresponding upper clamping arm (121), and the driving end of the second upper shackle driving member (1262) is connected to the corresponding lower clamping arm (131); When the driving ends of the first buckle-on / off driving member (1261) and the second buckle-on / off driving member (1262) are extended or shortened, the two upper clamping arms (121) are synchronously rotated relative to the lower clamping arm (131) to buckle or detach.

5. The iron roughneck's clamping and shackle device according to claim 1, wherein: The mounting bracket assembly further comprises: A support frame (114) is fixedly provided with a tapered pin shaft (115) extending forward and backward, the tapered pin shaft (115) is inserted into a tapered pin hole (1111) at the upper portion of the mounting frame (111), and the mounting frame (111) is capable of rotating around the tapered pin shaft (115) relative to the support frame (114).

6. The iron roughneck's clamping and shackle device according to claim 5, wherein: The mounting frame assembly further includes a front and rear floating unit (116), wherein the front and rear floating unit (116) includes: A vertical rod (1161) fixedly connected to the support frame (114); A lifting component sleeved on the outer periphery of the vertical rod (1161) and capable of lifting and moving relative to the vertical rod (1161); The first end is rotatably connected to the support frame (114) and the second end is rotatably connected to the pressing rod (1163) of the lifting assembly, and the first end of the pressing rod (1163) is used to abut against the lower side surface of the mounting frame (111).

7. The iron roughneck's clamping and shackle device according to claim 6, wherein: The lower end of the vertical rod (1161) extends radially outward to form an annular limiting portion (11611); The lifting assembly comprises: a sleeve (11621) sleeved on the outer periphery of the vertical rod (1161) and capable of being lifted and lowered relative to the vertical rod (1161); an upper limit ring (11622) and a lower limit ring (11623) are respectively provided on the upper and lower portions of the inner peripheral wall of the sleeve (11621); the lower limit ring (11623) is capable of abutting against the top of the annular limit portion (11611); A spring (11624) is located between the sleeve (11621) and the vertical rod (1161), with two ends of the spring (11624) respectively abutting against the upper limit ring (11622) and the lower limit ring (11623).

8. An iron roughneck, characterized in that A clamping and shackle device for an iron roughneck comprising the device according to any one of claims 1 to 7; The screw-down device (4) is also included. The screw-down device (4) is located above the upper clamp (12) and is connected to the mounting frame assembly. The screw-down device (4) is used to clamp the upper drill rod and drive the upper drill rod to rotate relative to the lower drill rod after being screwed in to connect the lower drill rod, or drive the upper drill rod to rotate relative to the lower drill rod after being screwed out to remove the lower drill rod. The iron roughneck also includes: A horizontal driver (2), wherein a first end of the horizontal driver (2) is connected to the mounting frame (111) and drives the clamping and shackle device (1) and the screwing device (4) to move synchronously horizontally via the mounting frame (111); A lifting driver (3) is connected to the second end of the horizontal driver (2) and drives the clamping and detaching device (1) and the rotating device (4) to move synchronously up and down through the horizontal driver (2).

Images