A punching and buckling pliers device and a method of using the same

Abstract

The present invention proposes a punching and buckling pliers device, wherein the first clamp assembly includes a first bracket, and a first driving mechanism and a first clamp installed on the first bracket, the first driving mechanism is connected to the first clamp, and drives the first clamp to slide up and down; the second clamp assembly includes a second bracket, and a second driving mechanism and a second clamp installed on the second bracket, the second driving mechanism is connected to the second clamp, and drives the second clamp to slide up and down; the screwing mechanism is connected to the first bracket and the second bracket, drives the first clamp assembly to apply torque to the drill in a first direction, and drives the second clamp assembly to apply torque to the drill in a second direction opposite to the first direction; the offset mechanism is connected to the first bracket and / or the second bracket, and drives the first clamp and the second clamp to move away from each other in the left and right directions. Only two clamps are needed to realize the buckling operation and the buckling operation, and the structure is reasonably stressed. The present invention also proposes a method for using the above-mentioned punching and buckling pliers device.

Description

Technical Field

[0001] The invention relates to the technical field of oil drilling machinery, and in particular to a punching and buckling pliers device and a use method thereof. Background Art

[0002] With the improvement of automation level of oil drilling operation, wellhead hydraulic oil tools with high automation level, such as punching pliers, are being used more and more widely.

[0003] At present, the punching clamp device using the pipe clamp principle is widely used because it makes up for the shortcomings of the punching clamp devices on the market, such as short working life, complicated on-site maintenance, and shortened service life of drilling tools. However, the punching clamp device using the pipe clamp principle still has shortcomings, specifically: the punching clamp device includes three pairs of clamps, upper, middle and lower. The middle and upper pairs of clamps are used for the make-up operation, and the middle and lower pairs of clamps are used for the break-out operation. When performing oil extraction in ultra-deep well operations, double elevators are usually used to improve the operation efficiency. When the iron driller using the above punching clamp device performs the make-up operation, there is a situation where the space between the middle clamp and the drill table cannot accommodate the lower clamp (such as Figure 1 As shown), it cannot meet the requirements of double elevator operation.

[0004] Therefore, a new type of punching and buckling pliers device is urgently needed, which can solve the problem that it cannot adapt to double elevator operation during drilling while inheriting many advantages of the punching and buckling pliers based on the pipe clamp principle. Summary of the invention

[0005] 1. Technical issues to be resolved

[0006] In view of the problems existing in the above technologies, the present invention solves them to a certain extent. To this end, the first object of the present invention is to provide a buckle punching clamp device, which can realize the buckle making and buckle breaking operations with only two clamps and has a more reasonable structure.

[0007] The second object of the present invention is to provide a method for using the above-mentioned punching and buckling pliers device.

[0008] (II) Technical solution

[0009] In order to achieve the above object, the main technical solutions adopted by the present invention include:

[0010] On the one hand, the present invention provides a punching clamp device, including a first clamp assembly, a second clamp assembly, a screwing mechanism and an offset mechanism; the first clamp assembly includes a first bracket, and a first driving mechanism and a first clamp installed on the first bracket, the first driving mechanism is connected to the first clamp, and drives the first clamp to slide up and down along the first bracket; the second clamp assembly includes a second bracket, and a second driving mechanism and a second clamp installed on the second bracket, the second driving mechanism is connected to the second clamp, and drives the second clamp to slide up and down along the second bracket; the first bracket and the second bracket are arranged in sequence along the left and right directions; the screwing mechanism is rotatably connected to the first bracket and the second bracket respectively, drives the first clamp assembly to apply torque to the drilling tool in a first direction, and drives the second clamp assembly to apply torque to the drilling tool in a second direction opposite to the first direction; the offset mechanism is connected to the first bracket and / or the second bracket, drives the first clamp assembly and / or the second clamp assembly, so that the first clamp and the second clamp move away from each other in the left and right directions; during the buckle-up operation, the first clamp is located above the second clamp; during the buckle-off operation, the first clamp is located below the second clamp.

[0011] Optionally, the first clamp and the second clamp both include: a clamp body, a clamp hook and a clamping cylinder; the clamp body includes a clamp head for clamping the drill tool interface and a clamp tail for being installed on a bracket and connected to a driving mechanism; the clamp hook is rotatably connected to the clamp body, and the clamping cylinder is respectively connected to the clamp hook and the clamp tail to drive the clamp hook to rotate relative to the clamp body to achieve clamping and loosening; an arc-shaped clamp tooth convex to the clamp hook is installed on the inner side of the clamp head, and two flat clamp teeth are installed on the inner side of the clamping end of the clamp hook, and the two flat clamp teeth are arranged to form an angle with each other; when clamping the drill tool interface, the drill tool joint forms a three-point contact with the arc-shaped clamp tooth and the two flat clamp teeth, and the axis of the drill tool joint is located in the triangle formed by the three contact points.

[0012] Optionally, the first bracket has a first guide column extending in the up-down direction, the tail of the first clamp is provided with a first guide hole, the first guide column passes through the first guide hole, and the first guide hole is slidably connected to the first guide column up and down; the second bracket has a second guide column extending in the up-down direction, the tail of the second clamp is provided with a second guide hole, the second guide column passes through the second guide hole, and the second guide hole is slidably connected to the second guide column up and down.

[0013] Optionally, the first drive mechanism and the second drive mechanism both include: a motor, a screw nut and a trapezoidal screw extending in the up and down directions; the motor is fixedly mounted on the bracket, the rotating shaft of the motor is fixedly connected to the first end of the trapezoidal screw, the screw nut is sleeved on the trapezoidal screw, and the screw nut is fixedly connected to the first clamp.

[0014] Optionally, the screwing mechanism includes a punching cylinder, a cylinder body of the punching cylinder is rotatably connected to the first bracket, and a cylinder rod of the punching cylinder is rotatably connected to the second bracket; during the screwing process, the first clamp assembly and the second clamp assembly are configured to move synchronously.

[0015] Optionally, the punch clamp device also includes a first connecting rod assembly and a second connecting rod assembly, the first end of the first connecting rod assembly is hinged to the first bracket, the second end of the first connecting rod assembly is used to be hinged to the mounting frame of the iron driller, the first end of the second connecting rod assembly is hinged to the second bracket, and the second end of the second connecting rod assembly is used to be hinged to the mounting frame of the iron driller.

[0016] Optionally, the offset mechanism includes a first reset cylinder and / or a second reset cylinder, the first end of the first reset cylinder is connected to the first bracket, the second end of the first reset cylinder is used for rotational connection with the iron roughneck mounting frame, the first end of the second reset cylinder is connected to the second bracket, and the second end of the second reset cylinder is used for rotational connection with the iron roughneck mounting frame; the lever of the first reset cylinder extends to drive the first clamp assembly to deviate to the left, so that the first clamp and the second clamp move away from each other in the left and right directions; the lever of the first reset cylinder retracts to drive the first clamp assembly to reset; the lever of the second reset cylinder extends to drive the second clamp assembly to deviate to the right, so that the first clamp and the second clamp move away from each other in the left and right directions; the lever of the second reset cylinder retracts to drive the second clamp assembly to reset; during the screwing process of the punching and buckling pliers device, the first reset cylinder and the second reset cylinder are both configured to move in a follow-up manner.

[0017] Optionally, the punch clamp device also includes a first connecting rod assembly and a second connecting rod assembly, the first end of the first connecting rod assembly is hinged to the first bracket, the second end of the first connecting rod assembly is used to be hinged to the mounting frame of the iron driller, the first end of the second connecting rod assembly is hinged to the second bracket, and the second end of the second connecting rod assembly is used to be hinged to the mounting frame of the iron driller; the first end of the first reset cylinder is connected to the first bracket through the first connecting rod assembly, and the first end of the second reset cylinder is connected to the second bracket through the second connecting rod assembly.

[0018] Optionally, a first limit switch is provided at the upper portion of the first bracket, and a second limit switch is provided at the lower portion of the first bracket; a third limit switch is provided at the upper portion of the second bracket, and a fourth limit switch is provided at the lower portion of the second bracket; during the buckle-up operation, the first clamp contacts the first limit switch, and the second clamp contacts the fourth limit switch; during the buckle-down operation, the first clamp contacts the second limit switch, and the second clamp contacts the third limit switch.

[0019] In another aspect, the present invention provides a method for using a punching and buckling pliers device, comprising the following steps:

[0020] S1. Operation of switching from the make-up state to the make-up state: the jaws of the first clamp and the jaws of the second clamp are both closed, and the first clamp and the second clamp are driven to move away from each other in the left-right direction by the offset mechanism until the first clamp and the second clamp no longer overlap, and then the first driving mechanism and the second driving mechanism are used to drive the first clamp and the second clamp until the first clamp is located below the second clamp, and the offset mechanism is reset, and the jaws of the first clamp and the second clamp are both opened;

[0021] S2, conversion operation from the unfastening state to the buckling state: the jaws of the first clamp and the jaws of the second clamp are both closed, and the first clamp and the second clamp are driven to move away from each other in the left and right directions through the offset mechanism until the first clamp and the second clamp no longer overlap, and then the first driving mechanism and the second driving mechanism are used to drive the first clamp and the second clamp until the first clamp is above the second clamp, the offset mechanism is reset, and the jaws of the first clamp and the second clamp are both opened.

[0022] (III) Beneficial effects

[0023] The beneficial effects of the present invention are:

[0024] 1. The punching clamp device proposed in the present invention has only two clamps for clamping the drill tool interface, and has the function of switching between the make-up working state and the break-out working state, so that only two clamps are needed to realize the make-up operation and the break-out operation, and the structural force is more reasonable.

[0025] 2. The buckle punching pliers device proposed in the present invention can inherit the advantages of the clamps using the pipe clamp principle, such as reasonable force structure, simple structure, reliability and durability, and convenient on-site maintenance, and has the function of switching between the buckle-up working state and the buckle-down working state. Only two clamps are needed to realize the buckle-up operation and the buckle-down operation, thus overcoming the problem that the existing three-clamp mechanism using the pipe clamp principle cannot perform double-lifting operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The present invention is described with the aid of the following drawings:

[0027] Figure 1 It is a schematic diagram of a situation in which a three-clamp mechanism in the background technology of the present invention is not suitable for double elevator operation;

[0028] Figure 2 is a schematic diagram of the three-dimensional structure of the punching and buckling clamp device in Example 1 of the present invention;

[0029] Figure 3 is a schematic top view of the punching and buckling clamp device in Example 1 of the present invention;

[0030] Figure 4 is a schematic diagram of the three-dimensional structure of the second clamp assembly in Example 1 of the present invention;

[0031] Figure 5 is a cross-sectional schematic diagram of the second clamp assembly in Embodiment 1 of the present invention;

[0032] Figure 6 is a side view schematic diagram of the second clamp assembly in the buckled working state in Embodiment 1 of the present invention;

[0033] Figure 7 is a side view schematic diagram of the second clamp assembly in the shackle working state in Embodiment 1 of the present invention;

[0034] Figure 8 It is a schematic top view of the punching and buckling clamp device in the embodiment 1 of the present invention during the conversion process from the buckling state to the buckling state;

[0035] Fig. 9 It is a schematic top view of the punching and fastening clamp device in Example 2 of the present invention during the transition process from the make-up state to the break-out state.

[0036] [Description of Reference Numerals]

[0037] 11: first bracket; 111: first guide column; 112: self-lubricating copper sleeve; 114: first supporting top plate; 116: first punching cylinder mounting seat;

[0038] 12: first clamp; 121: clamp head; 122: clamp tail; 123: clamp hook; 124: clamp cylinder; 125: first pressing plate; 126: second pressing plate; 127: arc-shaped clamp teeth; 128: flat clamp teeth;

[0039] 131: motor; 132: lead screw nut; 133: trapezoidal lead screw;

[0040] 14: second bracket; 141: second guide column; 142: second support plate; 143: second support top plate; 144: second support bottom plate; 145: second punching cylinder mounting seat;

[0041] 15: second clamp;

[0042] 21: punching cylinder;

[0043] 31: first connecting rod assembly; 32: second connecting rod assembly;

[0044] 41: reset cylinder;

[0045] 51: first limit switch; 52: second limit switch;

[0046] 61: first telescopic cover; 62: second telescopic cover;

[0047] 71: first reset cylinder; 72: second reset cylinder. DETAILED DESCRIPTION

[0048] 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 through specific embodiments. Figure 2 The orientation is taken as a reference, wherein the up-down direction is parallel to the axial direction of the drill tool to be made up and / or made up.

[0049] Example 1

[0050] like Figures 2 to 8 As shown, the present invention provides a punching and buckling pliers device, which includes a first clamp assembly, a second clamp assembly, a screwing mechanism and an offset mechanism.

[0051] Among them, Figure 2 As shown, the first clamp assembly includes a first bracket 11, and a first driving mechanism and a first clamp 12 installed on the first bracket 11, the first driving mechanism is connected to the first clamp 12, and drives the first clamp 12 to slide up and down along the first bracket 11; the second clamp assembly includes a second bracket 14, and a second driving mechanism and a second clamp 15 installed on the second bracket 14, the second driving mechanism is connected to the second clamp 15, and drives the second clamp 15 to slide up and down along the second bracket 14; the first bracket 11 and the second bracket 14 are arranged in sequence along the left-right direction. The first clamp 12 is used to clamp the interface of a drill tool to be made and / or broken, and the second clamp 15 is used to clamp the interface of another drill tool to be made and / or broken.

[0052] The screwing mechanism is rotatably connected to the first bracket 11 and the second bracket 14 respectively, drives the first clamp 12 to apply torque to the drill in a first direction, and drives the second clamp assembly to apply torque to the drill in a second direction opposite to the first direction.

[0053] The offset mechanism is connected to the first bracket 11 and / or the second bracket 14 to drive the first clamp assembly and / or the second clamp assembly to move the first clamp 12 and the second clamp 15 away from each other in the left-right direction.

[0054] The punching and buckling clamp device thus arranged can sequentially perform the following tasks:

[0055] 1. Make-up operation, specifically, the first clamp 12 is located above the second clamp 15, the jaws of the first clamp 12 clamp the interface of the upper drill tool, the jaws of the second clamp 15 clamp the interface of the lower drill tool, the screwing mechanism works, the first clamp 12 is driven to apply torque to the upper drill tool in a first direction, the second clamp 15 is driven to apply torque to the lower drill tool in a second direction opposite to the first direction, the make-up is completed, the jaws of the first clamp 12 and the jaws of the second clamp 15 are both loosened, and the screwing mechanism is reset.

[0056] 2. The make-up state is converted to the make-up state, specifically, the jaws of the first clamp 12 are closed, the jaws of the second clamp 15 are closed, the offset mechanism is operated, and the first clamp 12 and the second clamp 15 are driven to move away from each other in the left and right directions until the first clamp 12 and the second clamp 15 no longer overlap, the first drive mechanism and the second drive mechanism are operated, and the first clamp 12 is driven to slide downward along the first bracket 11, and the second clamp 15 is driven to slide upward along the second bracket 14 until the first clamp 12 is located below the second clamp 15, the offset mechanism is reset, and the jaws of the first clamp 12 and the jaws of the second clamp 15 are both released, and the conversion is completed.

[0057] 3. The shackle operation is specifically as follows: the jaws of the second clamp 15 clamp the interface of the upper drill tool, the jaws of the first clamp 12 clamp the interface of the lower drill tool, and the screwing mechanism works to drive the second clamp 15 to apply a torque to the upper drill tool in a second direction opposite to the first direction, and drive the first clamp 12 to apply a torque to the lower drill tool in the first direction to complete the shackle. The jaws of the first clamp 12 and the jaws of the second clamp 15 are both loosened, and the screwing mechanism is reset.

[0058] 4. The buckle state is converted to the buckle state, specifically, the jaws of the first clamp 12 are closed, the jaws of the second clamp 15 are closed, the offset mechanism is operated, and the first clamp 12 and the second clamp 15 are driven to move away from each other in the left and right directions until the first clamp 12 and the second clamp 15 no longer overlap, the first drive mechanism and the second drive mechanism are operated, and the first clamp 12 is driven to slide upward along the first bracket 11, and the second clamp 15 is driven to slide downward along the second bracket 14 until the first clamp 12 is located above the second clamp 15, the offset mechanism is reset, and the jaws of the first clamp 12 and the second clamp 15 are both released, and the conversion is completed.

[0059] It can be seen that the punch clamp device proposed in the present invention has only two clamps for clamping the drill tool interface, and has the function of switching between the make-up working state and the make-up and make-out working state, so that only two clamps are needed to realize the make-up and make-out operations, and the structural force is more reasonable.

[0060] Preferably, if Figures 2 to 4As shown, the first clamp 12 and the second clamp 15 each include: a clamp body, a clamp hook 123 and a clamp cylinder 124. The clamp body includes a clamp head 121 and a clamp tail 122, the clamp tail 122 is used to be installed on the bracket (i.e., the first bracket 11 and the second bracket 14) and connected to the driving mechanism (i.e., the first driving mechanism and the second driving mechanism), the clamp head 121 is used to clamp the drilling tool interface; the clamp hook 123 is rotatably connected to the clamp body; the clamp cylinder 124 is arranged between the clamp hook 123 and the clamp tail 122, and is respectively connected to the clamp hook 123 and the clamp tail 122, driving the clamp hook 123 to rotate relative to the clamp body, and is used to clamp and release the drilling tool interface. The first clamp 12 and the second clamp 15 thus configured are suitable for use in the punching clamp device proposed in the present invention, so that the work is stable.

[0061] Furthermore, if Figure 4 As shown, in this embodiment, the clamp body also includes a first pressure plate 125 and a second pressure plate 126, the top of the clamp head 121 is fixedly connected to the top of the clamp tail 122 through the first pressure plate 125, and the bottom of the clamp head 121 is fixedly connected to the bottom of the clamp tail 122 through the second pressure plate 126, and a through hole is formed between the clamp head 121 and the clamp tail 122, and between the first pressure plate 125 and the second pressure plate 126; the clamp hook 123 passes through the through hole, and the clamp hook 123 is rotatably connected to the first pressure plate 125 and / or the second pressure plate 126 in the through hole.

[0062] Furthermore, if Figure 3 As shown, in this embodiment, the clamping cylinder 124 is arranged between the clamp hook 123 and the clamp tail 122 , the cylinder body of the clamping cylinder 124 is rotatably connected to the clamp tail 122 , and the cylinder rod of the clamping cylinder 124 is rotatably connected to the clamp hook 123 .

[0063] Further preferably, an arc-shaped jaw 127 convex to the jaw hook 123 is installed on the inner side of the clamping end of the clamp head 121 (i.e., the side of the clamping end of the clamp head 121 facing the jaw hook 123); two flat jaws 128 are installed on the inner side of the clamping end of the jaw hook 123 (i.e., the side of the clamping end of the jaw hook 123 facing the clamp head 121), and the two flat jaws 128 are arranged to be at an angle to each other. In this way, when the clamp clamps the drill tool interface, the drill tool joint forms a three-point contact with the arc-shaped jaw 127 and the two flat jaws 128, and the axis of the drill tool joint is located in the triangle formed by the three contact points, so that the clamp can be like a pipe clamp. It can be seen that the buckle punching pliers device proposed in the present invention can inherit the advantages of the clamps using the pipe clamp principle, such as reasonable force structure, simple structure, reliability and durability, and convenient on-site maintenance, and has the function of switching between the buckle-up working state and the buckle-down working state. Only two clamps are needed to realize the buckle-up operation and the buckle-down operation, thus overcoming the problem that the existing three-clamp mechanism using the pipe clamp principle cannot perform double-lifting operations.

[0064] Further preferably, when the punch clamp device clamps the drill, the inner side of the clamp hook 123 of the first clamp 12 is arranged face to face with the inner side of the clamp hook 123 of the second clamp 15. In this way, the first clamp 12 and the second clamp 15 are conducive to clamping the drill interface.

[0065] Preferably, if Figure 2 , Figure 4 , Figure 5 and Figure 6 As shown, the first bracket 11 has a first guide column 111 extending in the up-down direction, the tail 122 of the first clamp 12 has a first guide hole, the first guide column 111 penetrates the first guide hole, and the first guide hole is connected to the first guide column 111 in an up-down sliding manner, so that the first clamp 12 can slide up and down along the first guide column 111; the second bracket 14 has a second guide column 141 extending in the up-down direction, the tail 122 of the second clamp 15 has a second guide hole, the second guide column 141 penetrates the second guide hole, and the second guide hole is connected to the second guide column 141 in an up-down sliding manner, so that the second clamp 15 can slide up and down along the second guide column 141. In this way, through the cooperation of the guide column and the guide hole, the first clamp 12 and the second clamp 15 are guided to slide up and down, which is conducive to the stable operation of the first drive mechanism and the second drive mechanism. Further, in this embodiment, the first guide hole is sleeved on the first guide column 111 through the self-lubricating copper sleeve 112, and the second guide hole is sleeved on the second guide column 141 through the self-lubricating copper sleeve 112.

[0066] Further preferably, in this embodiment, the first bracket 11 has two first guide posts 111 and two first guide holes, the two first guide holes are respectively located at the left and right sides of the clamp tail 122 of the first clamp 12, and the two first guide posts 111 respectively penetrate the two first guide holes; similarly, the second bracket 14 has two second guide posts 141 and two second guide holes, the two second guide holes are respectively located at the left and right sides of the clamp tail 122 of the second clamp 15, and the two second guide posts 141 respectively penetrate the two second guide holes. In this way, the sliding stability of the first clamp 12 along the first bracket 11 and the sliding stability of the second clamp 15 along the second bracket 14 are further enhanced.

[0067] Preferably, the first drive mechanism and the second drive mechanism each include: a motor 131, a lead screw nut 132 and a trapezoidal lead screw 133 extending in the up-down direction; the motor 131 is fixedly mounted on the bracket (the first bracket 11 and the second bracket 14), the rotating shaft of the motor 131 is fixedly connected to the first end of the trapezoidal lead screw 133, the lead screw nut 132 is sleeved on the trapezoidal lead screw 133, and the lead screw nut 132 is fixedly connected to the first clamp 12. The first drive mechanism and the second drive mechanism thus configured can stably drive the first clamp 12 and the second clamp 15 to slide up and down, respectively.

[0068] Specifically, Figure 5 As shown, in this embodiment, the first end of the trapezoidal lead screw 133 is rotatably mounted on the bracket through a first tapered roller bearing, the second end of the trapezoidal lead screw 133 is rotatably mounted on the bracket through a second tapered roller bearing, the motor 131 is a hydraulic motor 131, and the rotating shaft of the hydraulic motor 131 is connected to the first end of the trapezoidal lead screw 133 through a flat key. Of course, the motor 131 is an electric motor 131, or the rotating shaft of the motor 131 is connected to the first end of the trapezoidal lead screw 133 through a coupling, which can also achieve a similar effect.

[0069] Further, in this embodiment, the first clamp 12 has a first drive hole at its tail 122, and the lead screw nut 132 of the first drive mechanism extends into the first drive hole and is fixedly connected to the first drive hole; the second clamp 15 has a second drive hole at its tail 122, and the lead screw nut 132 of the second drive mechanism extends into the second drive hole and is fixedly connected to the second drive hole. Further preferably, in this embodiment, the first drive hole is located between the two first guide holes, and the second drive hole is located between the two second guide holes.

[0070] Preferably, the screwing mechanism is a punching and buckling cylinder 21, the cylinder body of the punching and buckling cylinder 21 is rotatably connected to the first bracket 11, and the cylinder rod of the punching and buckling cylinder 21 is rotatably connected to the second bracket 14. In this way, the screwing function is realized while the structure is simple.

[0071] Furthermore, in the present embodiment, the cylinder body of the punching cylinder 21 is rotatably connected to the first bracket 11 via a shaft sleeve, and the cylinder rod of the punching cylinder 21 is rotatably connected to the second bracket 14 via a pin shaft.

[0072] Further preferably, during the screwing process, the first clamp assembly and the second clamp assembly are configured to move synchronously.

[0073] Preferably, if Figure 2 , Figure 3 and Figure 8 As shown, the punching and buckling pliers device also includes a connecting mechanism, which includes a first connecting rod assembly 31 and a second connecting rod assembly 32. The first end of the first connecting rod assembly 31 is hinged to the first bracket 11, and the second end of the first connecting rod assembly 31 is used to be hinged to the mounting frame of the iron roughneck. The first end of the second connecting rod assembly 32 is hinged to the second bracket 14, and the second end of the second connecting rod assembly 32 is used to be hinged to the mounting frame of the iron roughneck. By setting the first connecting rod assembly 31 and the second connecting rod assembly 32 as the connecting mechanism between the punching and buckling pliers device and the iron roughneck, the complex movement requirements of the punching and buckling pliers device are met. Among them, the connecting rod assembly is formed by two or more connecting rods that are hinged head to tail in sequence.

[0074] Further preferably, the connection mechanism includes two groups of first link assemblies 31 and two groups of second link assemblies 32; the first ends of the two groups of first link assemblies 31 are respectively hinged to the upper part of the first bracket 11 and the lower part of the first bracket 11, and the second ends of the two groups of first link assemblies 31 are used to hinge to the mounting frame of the iron roughneck; the first ends of the two groups of second link assemblies 32 are respectively hinged to the upper part of the second bracket 14 and the lower part of the second bracket 14, and the second ends of the two groups of second link assemblies 32 are used to hinge to the mounting frame of the iron roughneck. In this way, the connection between the punch clamp device and the iron roughneck is enhanced.

[0075] Further preferably, in the present embodiment, the first connecting rod assembly 31 and the second connecting rod assembly 32 are both formed by two connecting rods hingedly connected head to tail in sequence.

[0076] Preferably, the offset mechanism includes a reset cylinder 41, a first end of the reset cylinder 41 is connected to the first bracket 11, and a second end of the reset cylinder 41 is used for rotational connection with the iron roughneck mounting frame; the lever of the reset cylinder 41 extends to drive the first clamp assembly to deviate to the left, so that the first clamp 12 and the second clamp 15 move away from each other in the left and right directions, and the lever of the reset cylinder 41 retracts to drive the first clamp assembly to reset; during the screwing process of the punch clamp device, the reset cylinder 41 is configured to move in a follow-up manner.

[0077] More preferably, if Figure 8 As shown, the first end of the reset cylinder 41 is connected to the first bracket 11 through the first connecting rod assembly 31. Specifically, the first end of the reset cylinder 41 is hinged to the first connecting rod assembly 31 at the inner hinge position of the first connecting rod assembly 31 (i.e., other hinge positions in the first connecting rod assembly 31 except the head and tail hinge positions). Further preferably, the first end of the reset cylinder 41 is connected to the first bracket 11 through the first connecting rod assembly 31 located at the upper part of the first bracket 11.

[0078] Preferably, a first limit switch 51 is provided at the upper portion of the first bracket 11, and a second limit switch 52 is provided at the lower portion of the first bracket 11; a third limit switch is provided at the upper portion of the second bracket 14, and a fourth limit switch is provided at the lower portion of the second bracket 14; during the buckling operation, the first clamp 12 contacts the first limit switch 51, and the second clamp 15 contacts the fourth limit switch; during the buckling operation, the first clamp 12 contacts the second limit switch 52, and the second clamp 15 contacts the third limit switch, as shown in FIG. Figure 6 and Figure 7 In this way, the up and down sliding positions of the first clamp 12 and the second clamp 15 can be accurately controlled to complete the mutual conversion between the make-up state and the make-up state.

[0079] Preferably, the first bracket 11 includes a first support plate, the top end of the first support plate has a first support top plate 114 bent forward, the bottom end of the first support plate has a first support bottom plate bent forward, and the rear side of the first support plate is provided with a first punching cylinder 21 mounting seat 116; the first guide column 111 is arranged between the first support top plate 114 and the first support bottom plate, the motor 131 in the first driving mechanism is installed on the first support top plate 114, and the two ends of the trapezoidal screw 133 are respectively installed on the first support top plate 114 and the first support bottom plate. The second bracket 14 includes a second support plate 142, the top end of the second support plate 142 has a second support top plate 143 bent forward, the bottom end of the second support plate 142 has a second support bottom plate 144 bent forward, and the rear side of the second support plate 142 is provided with a second punching cylinder 21 mounting seat 145; the second guide column 141 is arranged between the second support top plate 143 and the second support bottom plate 144, the motor 131 in the second driving mechanism is installed on the second support top plate 143, and the two ends of the trapezoidal screw 133 are respectively installed on the second support top plate 143 and the second support bottom plate 144.

[0080] Further preferably, the first ends of the two groups of first connecting rod assemblies 31 are respectively hinged to the first support top plate 114 and the first support bottom plate, and the first ends of the two groups of second connecting rod assemblies 32 are respectively hinged to the second support top plate 143 and the second support bottom plate 144.

[0081] Further preferably, a first limit switch 51 is provided at the bottom front end of the first support top plate 114, a second limit switch 52 is provided at the top front end of the first support bottom plate, a third limit switch is provided at the bottom front end of the second support top plate 143, and a fourth limit switch is provided at the top front end of the second support bottom plate 144.

[0082] Preferably, the punching and buckling pliers device further comprises a first telescopic cover 61 and a second telescopic cover 62, both of which are cylindrical. The first end of the first telescopic cover 61 is connected to the bottom of the first support top plate 114, the second end of the first telescopic cover 61 is connected to the top of the first support bottom plate, the first guide column 111 and the trapezoidal lead screw 133 of the first drive mechanism are both accommodated in the first telescopic cover 61, and the clamp tail 122 of the first clamp 12 passes through the first telescopic cover 61 and is connected to the first guide column 111 and the trapezoidal lead screw 133 of the first drive mechanism; the first clamp 12 moves upward, the first telescopic cover 61 between the first clamp 12 and the first support top plate 114 is compressed, and the first telescopic cover 61 between the first clamp 12 and the first support bottom plate is stretched; the first clamp 12 moves downward, the first telescopic cover 61 between the first clamp 12 and the first support top plate 114 is stretched, and the first telescopic cover 61 between the first clamp 12 and the first support bottom plate is compressed. The first end of the second telescopic cover 62 is connected to the bottom of the second support top plate 143, the second end of the second telescopic cover 62 is connected to the top of the second support bottom plate 144, the second guide column 141 and the trapezoidal lead screw 133 of the second drive mechanism are both accommodated in the second telescopic cover 62, and the clamp tail 122 of the second clamp 15 passes through the second telescopic cover 62 and is connected to the second guide column 141 and the trapezoidal lead screw 133 of the second drive mechanism; the second clamp 15 moves upward, the second telescopic cover 62 between the second clamp 15 and the second support top plate 143 is compressed, and the second telescopic cover 62 between the second clamp 15 and the second support bottom plate 144 is stretched; the second clamp 15 moves downward, the second telescopic cover 62 between the second clamp 15 and the second support top plate 143 is stretched, and the second telescopic cover 62 between the second clamp 15 and the second support bottom plate 144 is compressed. In this way, during the operation of the punching and buckling clamp device, the drive mechanism and the clamp tail 122 are protected from external soil, sand and gravel pollution.

[0083] Example 2

[0084] The main difference between this embodiment and embodiment 1 is that:

[0085] like Fig. 9As shown, the offset mechanism includes a first reset cylinder 71 and a second reset cylinder 72. The first end of the first reset cylinder 71 is connected to the first bracket 11, and the second end of the first reset cylinder 71 is used to be rotatably connected to the iron roughneck installation frame. The first end of the second reset cylinder 72 is connected to the second bracket 14, and the second end of the second reset cylinder 72 is used to be rotatably connected to the iron roughneck installation frame. The lever of the first reset cylinder 71 extends to drive the first clamp assembly to deviate to the left, so that the first clamp 12 and the second clamp 15 are separated from each other in the left and right directions. The lever of the first reset cylinder 71 retracts to drive the first clamp assembly to reset. The lever of the second reset cylinder 72 extends to drive the second clamp assembly to deviate to the right, so that the first clamp 12 and the second clamp 15 are separated from each other in the left and right directions. The lever of the second reset cylinder 72 retracts to drive the second clamp assembly to reset. During the screwing process of the punch clamp device, the first reset cylinder 71 and the second reset cylinder 72 are both configured to move in a follow-up manner.

[0086] Further preferably, the first end of the first return cylinder 71 is connected to the first bracket 11 through the first connecting rod assembly 31, specifically, the first end of the first return cylinder 71 is hinged to the first connecting rod assembly 31 at the inner hinge position of the first connecting rod assembly 31 (i.e., other hinge positions in the first connecting rod assembly 31 except the head and tail hinge positions). The first end of the second return cylinder 72 is connected to the second bracket 14 through the second connecting rod assembly 32, specifically, the first end of the second return cylinder 72 is hinged to the second connecting rod assembly 32 at the inner hinge position of the second connecting rod assembly 32 (i.e., other hinge positions in the first connecting rod assembly 31 except the head and tail hinge positions).

[0087] The rest is the same as Example 1 and will not be described again here.

[0088] Example 3

[0089] This embodiment is a method for using the punching and buckling pliers device in Embodiment 1 or Embodiment 2, comprising the following steps:

[0090] S1. Make-up operation: in the initial state, the first clamp is located above the second clamp; the jaws of the first clamp are clamped on the interface of the upper drill tool, and the jaws of the second clamp are clamped on the interface of the lower drill tool, and the first clamp and the second clamp are driven by the screwing mechanism until the make-up is completed, the jaws of the first clamp and the jaws of the second clamp are both loosened, and the screwing mechanism is reset.

[0091] S2, conversion operation from the make-up state to the make-up state: the jaws of the first clamp and the jaws of the second clamp are both closed, and the first clamp and the second clamp are driven to move away from each other in the left and right directions through the offset mechanism until the first clamp and the second clamp no longer overlap, and then the first drive mechanism and the second drive mechanism are used to drive the first clamp and the second clamp until the first clamp is located below the second clamp, the offset mechanism is reset, and the jaws of the first clamp and the second clamp are both opened.

[0092] S3, shattering operation: the jaws of the second clamp are made to clamp the interface of the upper drill tool, and the jaws of the first clamp are made to clamp the interface of the lower drill tool, and the second clamp and the first clamp are driven by the screwing mechanism until the shattering is completed, the jaws of the first clamp and the jaws of the second clamp are both loosened, and the screwing mechanism is reset.

[0093] S4, conversion operation from the unfastening state to the buckling state: the jaws of the first clamp and the jaws of the second clamp are both closed, and the first clamp and the second clamp are driven to move away from each other in the left and right directions through the offset mechanism until the first clamp and the second clamp no longer overlap, and then the first driving mechanism and the second driving mechanism are used to drive the first clamp and the second clamp until the first clamp is above the second clamp, the offset mechanism is reset, and the jaws of the first clamp and the second clamp are both opened.

[0094] It should be understood that the above description of the specific embodiments of the present invention is only for illustrating the technical route and features of the present invention, and its purpose is to enable those skilled in the art to understand the content of the present invention and implement it accordingly, but the present invention is not limited to the above specific implementation methods. Any changes or modifications made within the scope of the claims of the present invention should be included in the protection scope of the present invention.

Claims

1. A punching and buckling pliers device, characterized in that: It includes a first clamp assembly, a second clamp assembly, a screwing mechanism and an offset mechanism; The first clamp assembly comprises a first bracket (11), and a first driving mechanism and a first clamp (12) mounted on the first bracket (11), the first driving mechanism being connected to the first clamp (12) and driving the first clamp (12) to slide up and down along the first bracket (11); the second clamp assembly comprises a second bracket (14), and a second driving mechanism and a second clamp (15) mounted on the second bracket (14), the second driving mechanism being connected to the second clamp (15) and driving the second clamp (15) to slide up and down along the second bracket (14); the first bracket (11) and the second bracket (14) are arranged in sequence along the left-right direction; The screwing mechanism is rotatably connected to the first bracket (11) and the second bracket (14) respectively, driving the first clamp assembly to apply torque in a first direction, and driving the second clamp assembly to apply torque in a second direction opposite to the first direction; The offset mechanism is connected to the first bracket (11) and / or the second bracket (14), and drives the first clamp assembly and / or the second clamp assembly to move the first clamp (12) and the second clamp (15) away from each other in the left-right direction; During the make-up operation, the first clamp (12) is located above the second clamp (15); during the break-out operation, the first clamp (12) is located below the second clamp (15).

2. The punching and buckling pliers device according to claim 1, characterized in that: The first clamp (12) and the second clamp (15) both comprise: a clamp body, a clamp hook (123) and a clamping cylinder (124); The clamp body comprises a clamp head (121) for clamping a drilling tool interface and a clamp tail (122) for being mounted on a bracket and connected to a driving mechanism; a clamp hook (123) is rotatably connected to the clamp body, and a clamp cylinder (124) is respectively connected to the clamp hook (123) and the clamp tail (122) to drive the clamp hook (123) to rotate relative to the clamp body to achieve clamping and loosening; The inner side of the clamp head (121) is provided with an arc-shaped clamp tooth (127) protruding toward the clamp hook (123), and the inner side of the clamping end of the clamp hook (123) is provided with two flat clamp teeth (128), and the two flat clamp teeth (128) are arranged to form an angle with each other; When the drill tool interface is clamped, the drill tool joint forms three-point contact with the arc-shaped clamp teeth (127) and the two flat clamp teeth (128), and the axis of the drill tool joint is located in the triangle formed by the three contact points.

3. The punching and buckling pliers device according to claim 1, characterized in that: The first bracket (11) is provided with a first guide column (111) extending in the up-down direction, the clamp tail (122) of the first clamp (12) is provided with a first guide hole, the first guide column (111) passes through the first guide hole, and the first guide hole is slidably connected to the first guide column (111) up-down; The second bracket (14) has a second guide column (141) extending in the up-down direction, the clamp tail (122) of the second clamp (15) has a second guide hole, the second guide column (141) passes through the second guide hole, and the second guide hole is slidably connected to the second guide column (141) up-down.

4. The punching and buckling pliers device according to claim 1, characterized in that: The first driving mechanism and the second driving mechanism both include: a motor (131), a lead screw nut (132) and a trapezoidal lead screw (133) extending in the up-down direction; The motor (131) is fixedly mounted on the bracket, the rotating shaft of the motor (131) is fixedly connected to the first end of the trapezoidal lead screw (133), the lead screw nut (132) is sleeved on the trapezoidal lead screw (133), and the lead screw nut (132) is fixedly connected to the first clamp (12).

5. The punching and buckling pliers device according to claim 1, characterized in that: The screwing mechanism comprises a punching and buckling cylinder (21), a cylinder body of the punching and buckling cylinder (21) is rotatably connected to the first bracket (11), and a cylinder rod of the punching and buckling cylinder (21) is rotatably connected to the second bracket (14); During the screwing process, the first clamp assembly and the second clamp assembly are configured to act synchronously.

6. The punching and buckling pliers device according to claim 1, characterized in that: It also includes a first connecting rod assembly (31) and a second connecting rod assembly (32), wherein the first end of the first connecting rod assembly (31) is hinged to the first bracket (11), and the second end of the first connecting rod assembly (31) is used to be hinged to the mounting frame of the iron roughneck, the first end of the second connecting rod assembly (32) is hinged to the second bracket (14), and the second end of the second connecting rod assembly (32) is used to be hinged to the mounting frame of the iron roughneck.

7. The punching and buckling pliers device according to claim 1, characterized in that: The offset mechanism comprises a first reset cylinder (71) and / or a second reset cylinder (72), wherein a first end of the first reset cylinder (71) is connected to a first bracket (11), and a second end of the first reset cylinder (71) is used for rotationally connecting to an iron roughneck installation frame, a first end of the second reset cylinder (72) is connected to a second bracket (14), and a second end of the second reset cylinder (72) is used for rotationally connecting to an iron roughneck installation frame; The lever of the first reset cylinder (71) extends to drive the first clamp assembly to deviate to the left, so that the first clamp (12) and the second clamp (15) move away from each other in the left-right direction; the lever of the first reset cylinder (71) retracts to drive the first clamp assembly to reset; the lever of the second reset cylinder (72) extends to drive the second clamp assembly to deviate to the right, so that the first clamp (12) and the second clamp (15) move away from each other in the left-right direction; the lever of the second reset cylinder (72) retracts to drive the second clamp assembly to reset; During the screwing process of the punching and buckling pliers device, the first reset cylinder (71) and the second reset cylinder (72) are both configured to move in a follow-up manner.

8. The punching and buckling pliers device according to claim 7, characterized in that: It also includes a first connecting rod assembly (31) and a second connecting rod assembly (32), wherein the first end of the first connecting rod assembly (31) is hinged to the first bracket (11), and the second end of the first connecting rod assembly (31) is used to be hinged to the mounting frame of the iron roughneck, the first end of the second connecting rod assembly (32) is hinged to the second bracket (14), and the second end of the second connecting rod assembly (32) is used to be hinged to the mounting frame of the iron roughneck; The first end of the first reset cylinder (71) is connected to the first bracket (11) through the first connecting rod assembly (31), and the first end of the second reset cylinder (72) is connected to the second bracket (14) through the second connecting rod assembly (32).

9. The punching and buckling pliers device according to claim 1, characterized in that: A first limit switch (51) is arranged on the upper part of the first bracket (11), and a second limit switch (52) is arranged on the lower part of the first bracket (11); a third limit switch is arranged on the upper part of the second bracket (14), and a fourth limit switch is arranged on the lower part of the second bracket (14); During the make-up operation, the first clamp (12) contacts the first limit switch (51), and the second clamp (15) contacts the fourth limit switch; during the break-out operation, the first clamp (12) contacts the second limit switch (52), and the second clamp (15) contacts the third limit switch.

10. A method for using a punching and buckling pliers device, characterized in that: The punching and buckling pliers device as claimed in any one of claims 1 to 9 comprises the following steps: S1. Operation of switching from the make-up state to the make-up state: the jaws of the first clamp and the jaws of the second clamp are both closed, and the first clamp and the second clamp are driven to move away from each other in the left-right direction by the offset mechanism until the first clamp and the second clamp no longer overlap, and then the first driving mechanism and the second driving mechanism are used to drive the first clamp and the second clamp until the first clamp is located below the second clamp, and the offset mechanism is reset, and the jaws of the first clamp and the second clamp are both opened; S2, conversion operation from the unfastening state to the buckling state: the jaws of the first clamp and the jaws of the second clamp are both closed, and the first clamp and the second clamp are driven to move away from each other in the left and right directions through the offset mechanism until the first clamp and the second clamp no longer overlap, and then the first driving mechanism and the second driving mechanism are used to drive the first clamp and the second clamp until the first clamp is above the second clamp, the offset mechanism is reset, and the jaws of the first clamp and the second clamp are both opened.

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