Multi-functional hydraulic lifting clamp

Abstract

The application discloses a multifunctional hydraulic hanging clamp and relates to the technical field of oil drilling devices, which specifically comprises the following: a body, an assembly cavity is arranged in the body; a hoisting unit is arranged on the outer side of the body; a sliding plate is arranged on the inner wall of the assembly cavity; a clamping unit is arranged in the assembly cavity and is in sliding cooperation with the sliding plate; a lifting unit is arranged on the two sides of the body and is connected with the top of the clamping unit; the application solves the technical problem that the existing hydraulic hanging clamp has a narrow application range; the lifting unit drives the clamping unit to move up and down, thereby realizing the opposite or opposite movement of the tooth plate and the clamping of the pipe.

Description

Technical Field

[0001] This invention relates to the field of oil drilling equipment technology, and in particular to a multifunctional hydraulic lifting clamp. Background Technology

[0002] In oil and gas drilling and well workover operations, lifting chucks are crucial tools for suspending and lifting drill pipes, tubing, and other tubing strings, especially indispensable during tripping operations. Currently, most hydraulic lifting chucks widely used in China employ a side-opening design. Their working principle involves a hydraulic cylinder driving a valve to open and close, accommodating different sizes of tubing strings. To match different sizes of drill pipes, drill collars, casing, or tubing, it is usually necessary to replace the inner liner for adaptation.

[0003] However, existing side-opening clamps have the following shortcomings: their application is mainly limited to pipes with joints or couplings, and they cannot effectively clamp pipes without couplings (i.e. pipes without thickened steps or couplings at both ends of the pipe body), thus limiting their scope of application. Summary of the Invention

[0004] The purpose of this invention is to provide a multifunctional hydraulic lifting clamp, which solves the technical problem of the narrow applicability of hydraulic lifting clamps in the prior art.

[0005] This application discloses a multifunctional hydraulic lifting clamp, comprising: The main body has an assembly cavity inside; A hoisting unit is installed on the outside of the main body; A sliding plate is installed on the inner wall of the assembly cavity; A clamping unit is disposed inside the assembly cavity, and the clamping unit slides in cooperation with the sliding plate; A lifting unit is installed on both sides of the main body, and the output end of the lifting unit is connected to the top of the clamping unit.

[0006] This application designs a clamping unit and a lifting unit. The lifting unit drives the clamping unit to move up and down, thereby realizing the opening and clamping actions. This allows for the clamping of pipes of various sizes, thus expanding the scope of application of this application.

[0007] Based on the above technical solution, the present application can be further improved as follows: Furthermore, the clamping unit includes: The clamp head engages with the sliding plate. A jaw plate is installed on the inner wall of the pliers head; The clamping disc has a groove inside that mates with the top of the clamping head, and the clamping disc is connected to the output end of the lifting unit. The advantage of this step is that the lifting and lowering movement of the clamping disc drives the clamping head to lift and lower, thereby enabling the jaw plates to move closer together or open, so as to open or clamp the pipe fitting.

[0008] Furthermore, a through hole is provided on the top of the clamping disc, and a central cylinder is installed inside the through hole. A clearance hole is provided at the corresponding position of the central cylinder and the jaw plate. The beneficial effect of this step is that the jaw plate can complete the clamping action through the clearance hole.

[0009] Furthermore, a guide frame is provided at the bottom of the main body. The advantage of this step is that the guide frame facilitates clamping after the pipe passes through.

[0010] Furthermore, the guide frame is provided with a "figure-eight" inlet hole. The advantage of this step is that the figure-eight shape makes it easier for the pipe to enter the body and be clamped.

[0011] Furthermore, the lifting unit includes: The lifting hydraulic cylinder is connected at its bottom to the bottom of the main body; A connecting plate is installed at the output end of the lifting hydraulic cylinder, and the connecting plate is connected to the clamping plate. The beneficial effect of this step is that the lifting hydraulic cylinder drives the connecting plate to rise and fall together.

[0012] Furthermore, the connecting plate is Z-shaped.

[0013] Furthermore, the number of lifting hydraulic cylinders and clamps is at least three. The advantage of this step is that the stability of the movement can be ensured by using multiple lifting hydraulic cylinders.

[0014] Furthermore, the hoisting unit includes a lifting ring and a wire rope. The advantage of this step is that the wire rope and the lifting ring work together to perform subsequent suspension.

[0015] Furthermore, a flipping mechanism is provided on the outer side of the main body.

[0016] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages: 1. This application provides a multi-functional hydraulic lifting clamp, which uses a lifting unit to drive the clamping unit to perform lifting and lowering movements, thereby completing the facing or back-to-back movement of the jaw plates and completing the clamping of pipe fittings.

[0017] 2. This application utilizes the movement of the clamp head along the slide plate, thereby causing the clamping plate to contract towards the center or expand outward, thus achieving reliable clamping and release of the tubing string. This can be applied to clamping tubing of multiple sizes, while improving the safety, stability and adaptability to complex working conditions of drilling operations. Attached Figure Description

[0018] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of a multifunctional hydraulic lifting clamp according to a specific embodiment of the present invention; Figure 2 for Figure 1 A sectional view.

[0020] The attached figures are labeled as follows: 1-Main body; 2-Assembly cavity; 3-Lifting unit; 4-Slide plate; 5-Clamping unit; 6-Lifting unit; 7-Guide frame; 8-Tilting mechanism; 301 - Lifting ring; 302 - Steel wire rope; 501-Pliers head; 502-Grip plate; 503-Clamping disc; 504-Through hole; 505-Center cylinder; 506-Allowing hole; 601 - Lifting hydraulic cylinder; 602 - Connecting plate; 701 - Inlet Hole. Detailed Implementation

[0021] The embodiments of the technical solution of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the technical solution of the present invention and are therefore intended to limit the scope of protection of the present invention. It should be noted that, unless otherwise stated, the technical or scientific terms used in this application should have the ordinary meaning as understood by one of ordinary skill in the art to which this invention pertains.

[0022] In the description of this application, it should be understood that the terms "upper", "lower", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0023] In this application, unless otherwise expressly specified and limited, the terms "installation," "setup," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0024] To better understand the above technical solutions, the following will provide a detailed description of the technical solutions in conjunction with the accompanying drawings and specific embodiments.

[0025] Example: Hydraulic clamps are key tools used in oil and gas drilling operations to lift tubing strings, primarily for suspending drill pipes, drill collars, tubing, and other tubing during tripping in and out of the drilling rig. Most existing hydraulic clamps employ a side-opening design, using a hydraulic cylinder to open and close a valve to load and unload tubing strings. However, this design is unsuitable for tubing without couplings, making clamping impossible.

[0026] Accordingly, Figure 1 , 2 As shown, this application discloses a multifunctional hydraulic lifting clamp to solve the assembly problem of couplingless oil pipes, including: The main body 1 has an assembly cavity 2 inside, which is used to install clamping components for clamping pipe fittings such as couplingless oil pipes. The hoisting unit 3 is installed on the outside of the main body 1; Slide plate 4 is installed on the inner wall of the assembly cavity 2; The clamping unit 5 is disposed inside the assembly cavity 2, and the clamping unit 5 is slidably engaged with the slide plate 4. Specifically, the slide plate 4 has a groove to facilitate the sliding of the clamping unit 5. This engagement method is existing and will not be described in detail here. Lifting unit 6 is installed on both sides of the main body 1, and the output end of the lifting unit 6 is connected to the top of the clamping unit 5.

[0027] Among them, the main body 1 is the main support structure, and its material can be set according to the actual situation. It is not limited here. The assembly cavity 2 inside is specifically used to accommodate the subsequent clamping unit 5. The clamping unit 5 is clamped by a jaw plate. The slide plate 4 is placed at an angle of 18°. In this way, the clamping unit 5 tightens the clamping pipe under the drive of the lifting unit 6.

[0028] The lifting unit 3 facilitates the suspension of this application and also facilitates subsequent flipping. The slide plate 4 is fixed by bolts during assembly.

[0029] Further explanation is given regarding clamping unit 5, which includes: The clamp head 501 is movablely engaged with the slide plate 4; The jaw plate 502 is installed on the inner wall of the pliers head 501; The clamping disc 503 has a groove inside that mates with the top of the clamp head 501, and the clamping disc 503 is connected to the output end of the lifting unit 6.

[0030] The inner wall of the pliers head 501 is used to install the jaw plate 502. The pliers head 501 is installed in the clamping plate 503. The outer wall of the pliers head 501 is inclined. When the pliers head 501 moves up and down under the drive of the lifting unit 6, the bottom of the pliers head 501 can complete the closing action, and the jaw plate 502 can complete the clamping.

[0031] This application is for clamping couplingless oil pipes. Therefore, the top of the clamping disc 503 is provided with a through hole 504, and a central cylinder 505 is installed inside the through hole 504. A clearance hole 506 is provided at the corresponding position of the central cylinder 505 and the jaw plate 502. Through the clearance hole 506, the jaw plate 502 can be moved inward to complete the clamping of the couplingless oil pipe.

[0032] The couplingless oil pipe is inserted from bottom to top. Therefore, a guide frame 7 is provided at the bottom of the main body 1. The guide frame 7 facilitates the entry of the couplingless oil pipe into the interior of the main body and enables the clamping unit 5 to clamp it.

[0033] Specifically, the guide frame 7 is provided with a figure-eight shaped inlet hole 701, which can better guide the couplingless oil pipe into place.

[0034] To better achieve lifting, the lifting unit 6 in this application includes: The lifting hydraulic cylinder 601 is connected at its bottom to the bottom of the main body 1; A connecting plate 602 is installed at the output end of the lifting hydraulic cylinder 601, and the connecting plate 602 is connected to the clamping plate 503. Specifically, the lifting hydraulic cylinder 601 drives the connecting plate 602 to move, thereby realizing the tightening and clamping of the pliers head. At the same time, by adjusting the position of the piston rod of the hydraulic cylinder and the fixing nut of the clamping plate, the size of the opening or clamping circle of the pliers head can be adjusted.

[0035] To further ensure the stability of the connection, the connecting plate 602 is Z-shaped.

[0036] To ensure stability when clamping pipe fittings, the number of lifting hydraulic cylinders 601 and clamp heads 501 described in this application is at least three. This application adopts a three-clamp head slip structure, and the clamping force of the slips on the pipe string is changed by adjusting the cylinder pressure. The three clamp heads rise or fall synchronously through the clamping disc 503, which can be a round flange.

[0037] The hoisting unit 3 includes a lifting ring 301 and a wire rope 302. The lifting ring 301 is installed on the side of the main body, and the wire rope 302 is installed on the lifting ring 301, which facilitates hoisting and coordination with other components.

[0038] The outer side of the main body 1 is provided with a flipping mechanism 8, which is an existing mechanism used to realize the flipping function.

[0039] To further explain this application, When a pipe column lifting operation is required, the hoisting unit 3 is used to lower the hoisting clamp to the designated position. After the pipe is passed, the lifting unit 6 installed on both sides of the main body 1 is activated. The lifting unit 6 is used to drive the clamping plate 503 to move, thereby completing the tightening of the clamping head 501 and then completing the clamping of the pipe.

[0040] Meanwhile, the tilted design of the slide plate 4 in this application, combined with the clamp head 501, can accommodate parts of various sizes, thereby improving the applicability of this application.

[0041] Numerous specific details are set forth in this specification. However, it will be understood that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures, and techniques have not been shown in detail so as not to obscure the understanding of this specification. In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0042] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered within the scope of the claims and specification of the present invention.

Claims

1. A multi-functional hydraulic lifting clamp, characterized in that, include: The main body (1) has an assembly cavity (2) inside. The hoisting unit (3) is installed on the outside of the main body (1); The sliding plate (4) is installed on the inner wall of the assembly cavity (2); A clamping unit (5) is disposed inside the assembly cavity (2), and the clamping unit (5) is slidably engaged with the slide plate (4); The lifting unit (6) is installed on both sides of the main body (1), and the output end of the lifting unit (6) is connected to the top of the clamping unit (5).

2. The multi-functional hydraulic lifting clamp according to claim 1, characterized in that, The clamping unit (5) includes: The clamp head (501) is movable and cooperates with the slide plate (4); A toothed plate (502) is installed on the inner wall of the pliers head (501); The clamping disc (503) has a groove inside that matches the top of the clamp head (501), and the clamping disc (503) is connected to the output end of the lifting unit (6).

3. The multi-functional hydraulic lifting clamp according to claim 2, characterized in that, The clamping disc (503) has a through hole (504) at its top, and a central cylinder (505) is installed inside the through hole (504). The central cylinder (505) has a clearance hole (506) at the corresponding position of the jaw plate (502).

4. The multi-functional hydraulic lifting clamp according to claim 3, characterized in that, The bottom of the main body (1) is provided with a guide frame (7).

5. The multi-functional hydraulic lifting clamp according to claim 4, characterized in that, The guide frame (7) has a figure-eight shaped inlet hole (701).

6. The multifunctional hydraulic lifting clamp according to claim 5, characterized in that, The lifting unit (6) includes: The bottom of the lifting hydraulic cylinder (601) is connected to the bottom of the body (1); A connecting plate (602) is installed at the output end of the lifting hydraulic cylinder (601), and the connecting plate (602) is connected to the clamping plate (503).

7. The multifunctional hydraulic lifting clamp according to claim 6, characterized in that, The connecting plate (602) is Z-shaped.

8. The multifunctional hydraulic lifting clamp according to claim 6, characterized in that, The number of the lifting hydraulic cylinder (601) and the clamp head (501) is at least three.

9. The multi-functional hydraulic lifting clamp according to claim 1, characterized in that, The hoisting unit (3) includes a lifting ring (301) and a wire rope (302).

10. The multifunctional hydraulic lifting clamp according to claim 1, characterized in that, A flipping mechanism is provided on the outside of the main body (1).

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