Sucker rod chuck device

Abstract

The utility model relates to the technical field of oil field machinery, in particular to a sucker rod chuck device. Comprising a guide rail frame, a sliding frame, a clamping assembly and a power assembly. The clamping assembly is arranged on the two sliding frames, the power assembly drives the two sliding frames to be opened and closed on the guide rail frame, opening and closing of the clamping assembly are achieved, and therefore the sucker rod is clamped. The clamping assembly comprises a first clamping piece and a second clamping piece, and clamping openings are formed in the first clamping piece and the second clamping piece respectively. According to the sucker rod chuck device, an asymmetric clamping structure is adopted, and a unilateral constraint mechanism is ingeniously utilized. When the sucker rod falls into the U-shaped opening, the gravity of the sucker rod is intensively applied to the contact face of the side wall of the U-shaped opening, and the lever effect with the U-shaped opening as the fulcrum is formed. At the moment, the clamping piece on the other side only needs to provide auxiliary clamping force so that the self-locking effect can be achieved. Compared with a traditional symmetrical clamping structure, the design effectively avoids the risk of outward expansion of the sliding frame caused by bidirectional component force.

Description

Technical Field

[0001] This utility model relates to the field of oilfield machinery technology, specifically to a sucker rod chuck device. Background Technology

[0002] As a core transmission component connecting the pumping unit and the downhole pump in oilfield operations, the sucker rod plays a crucial role in transmitting the weight and reciprocating motion of the thousands of meters of rod string. In traditional oilfield operations, sucker rod tripping primarily relies on sucker rod clamps for fixing. However, suspending the sucker rod using these clamps requires manual labor and cannot be automated. Current sucker rod chucks mainly hold the rod body, which can cause damage. Therefore, there is an urgent need for an automated sucker rod chuck. Utility Model Content

[0003] This utility model provides a sucker rod chuck device, the purpose of which is to hold the frustum part of the sucker rod. The conical structure is conducive to the sucker rod clamp to grasp the sucker rod and facilitates automated operation.

[0004] To achieve the above objectives, the technical solution of this utility model is as follows:

[0005] A sucker rod chuck device includes: a guide rail, a sliding frame, a clamping assembly, and a power assembly;

[0006] The clamping assembly is mounted on two sliding frames. The power assembly drives the two sliding frames to open and close on the guide rail, thereby opening and closing the clamping assembly to clamp the sucker rod.

[0007] Furthermore, the clamping assembly includes a first clamping member and a second clamping member, and the first clamping member and the second clamping member are respectively provided with clamping openings.

[0008] Furthermore, at least one of the clamping ports is configured as a U-shaped opening.

[0009] Furthermore, the first clamping member and the second clamping member are combined into a cylindrical shape, and the upper part of the first clamping member and the second clamping member are provided with clamps that cooperate with the sucker rod.

[0010] Furthermore, the guide rail frame has a through hole at its center for the sucker rod to pass through.

[0011] Furthermore, the power assembly includes a hydraulic cylinder, a rotating ring, a triangular plate, and an arc-shaped rod;

[0012] A guide cylinder is provided at the lower part of the through hole, the rotating ring is provided outside the guide cylinder, the first corner of the triangular plate is hinged to the rotating plate, the second corner is hinged to a sliding frame, and the third corner is hinged to the hydraulic cylinder.

[0013] One end of the arc-shaped rod is hinged to a rotating ring, and the other end is hinged to another sliding frame.

[0014] Furthermore, a positioning hoop is provided on the guide cylinder, and a wear-resistant ring is provided on the upper part of the positioning hoop, which supports the rotating ring.

[0015] Furthermore, the hydraulic cylinder is equipped with a hydraulic lock to prevent loss of hydraulic power.

[0016] Furthermore, a protective cover is provided at the lower part of the guide rail frame.

[0017] Furthermore, a cushioning pad is provided between the two sliding frames.

[0018] The beneficial effects achieved by this utility model are as follows:

[0019] This invention relates to a sucker rod chuck device with an asymmetrical clamping structure that cleverly utilizes a unilateral constraint mechanism. When the sucker rod falls into the U-shaped opening, its gravity is concentrated on the contact surface of the U-shaped opening's sidewall, creating a lever effect with the U-shaped opening as the fulcrum. At this time, the clamping component on the other side only needs to provide auxiliary clamping force to achieve a self-locking effect. Compared with traditional symmetrical clamping structures, this design effectively avoids the risk of outward expansion of the sliding frame caused by bidirectional force.

[0020] This utility model discloses a sucker rod chuck device, which uses a crank-rocker mechanism design with a hydraulic cylinder driving a triangular plate and an arc-shaped rod to achieve synchronous control of the sliding frames on both sides by a single power source. Compared with the traditional dual-cylinder system, it eliminates the risk of clamping off-center load caused by asynchronous operation of the two cylinders. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0022] Figure 1 A schematic diagram of the overall structure of a sucker rod chuck device;

[0023] Figure 2 A diagram showing the open state of the clamping component of a sucker rod chuck device;

[0024] Figure 3 A structural diagram of a sucker rod chuck device without its protective cover;

[0025] Figure 4 This is a bottom structural diagram of a sucker rod chuck device;

[0026] Figure 5 A structural diagram of a sucker rod chuck device with one sliding bracket removed;

[0027] Figure 6 A structural diagram of the power assembly of a sucker rod chuck device;

[0028] In the diagram, 1 is the guide rail bracket; 11 is the through hole of the guide rail bracket; 12 is the guide cylinder; and 13 is the positioning clamp.

[0029] 2. Sliding frame; 21. Buffer pad;

[0030] 3. Clamping assembly; 31. First clamping member; 32. Second clamping member;

[0031] 4. Power assembly; 41. Hydraulic cylinder; 42. Rotating ring; 43. Triangular plate; 44. Arc rod; 45. Hydraulic lock;

[0032] 5. Protective cover; 6. Sucker rod.

[0033] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0035] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0036] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, if the word "and / or" appears throughout the text, it means including three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies A and B. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0037] like Figures 1-6 As shown, a sucker rod 6 chuck device includes: a guide rail frame 1, a sliding frame 2, a clamping assembly 3, and a power assembly 4; the guide rail frame 1 serves as the basic support structure of the device and provides linear motion guidance.

[0038] The clamping assembly 3 is mounted on two sliding frames 2. The power assembly 4 drives the two sliding frames 2 to open and close on the guide rail frame 1, thereby opening and closing the clamping assembly 3 and clamping the sucker rod 6.

[0039] The sliding frame 2 carries the clamping assembly 3. The radial movement of the clamping assembly 3 is achieved by opening and closing the guide rail frame 1, thereby clamping or releasing the sucker rod 6.

[0040] The guide rail frame 1 is H-shaped in general, and a through hole is provided in the center of the guide rail frame 1 for the sucker rod 6 to pass through; the upper part of the guide rail frame 1 is a track, and there are two sliding frames 2 on both sides of the track.

[0041] The power assembly 4 includes a hydraulic cylinder 41, a rotating ring 42, a triangular plate 43, and an arc-shaped rod 44. A guide cylinder 12 is located at the lower part of the through hole, and the rotating ring 42 is positioned outside the guide cylinder 12, rotating around it. The first corner of the triangular plate 43 is hinged to the rotating plate, the second corner is hinged to a sliding frame 2, and the third corner is hinged to the cylinder rod of the hydraulic cylinder 41. The cylinder body of the hydraulic cylinder 41 is hinged to the lower part of the guide rail frame 1. One end of the arc-shaped rod 44 is hinged to the rotating ring 42, and the other end is hinged to another sliding frame 2. In this design, the crank-rocker mechanism of the hydraulic cylinder 41 driving the triangular plate 43 and the arc-shaped rod 44 enables synchronous control of both sliding frames 2 by a single power source, eliminating the problem of asynchronous dual-cylinder drive.

[0042] The guide cylinder 12 is provided with a positioning hoop 13, and a wear-resistant ring is provided on the upper part of the positioning hoop 13. The wear-resistant ring supports the rotating ring 42 and gives the rotating ring 42 a downward limit.

[0043] The clamping assembly 3 includes a first clamping member 31 and a second clamping member 32. Each clamping member 31 and 32 has a clamping opening, one of which is U-shaped, or the curvature of one clamping opening is greater than that of the other. This asymmetrical clamping structure cleverly utilizes a unilateral constraint mechanism. When the sucker rod 6 falls into the U-shaped opening, its gravity is concentrated on the contact surface of the U-shaped opening's sidewall, creating a lever effect with the U-shaped opening as the fulcrum. At this time, the other clamping member only needs to provide auxiliary clamping force to achieve a self-locking effect. Compared to traditional symmetrical clamping structures, this design effectively avoids the risk of outward expansion of the sliding frame 2 caused by bidirectional force.

[0044] The first clamping member 31 and the second clamping member 32 are combined into a cylindrical shape. The upper part of the first clamping member 31 and the second clamping member 32 is provided with clamps that cooperate with the sucker rod 6. Different models of sucker rods 6 can be replaced by changing the clamps.

[0045] The first clamping member 31 and the second clamping member 32 cooperate with the clamp through the U-shaped opening to achieve radial clamping and axial positioning of the sucker rod 6.

[0046] The hydraulic cylinder 41 is equipped with a hydraulic lock 45 to prevent loss of hydraulic power and ensure continuous and stable clamping force. A protective cover 5 is installed at the lower part of the guide rail frame 1 to ensure long-term reliable operation of the mechanism. A buffer pad 21 is provided between the two sliding frames 2 to absorb the impact energy when the two sliding frames 2 are clamped.

[0047] The above description is only an optional embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A sucker rod chuck device, characterized in that, include: The guide rail (1), the sliding frame (2), the clamping assembly (3), and the power assembly (4); The clamping assembly (3) is set on two sliding frames (2). The power assembly (4) drives the two sliding frames (2) to open and close on the guide rail frame (1), thereby realizing the opening and closing of the clamping assembly (3) and clamping the sucker rod (6).

2. The sucker rod chuck device according to claim 1, characterized in that: The clamping assembly (3) includes a first clamping member (31) and a second clamping member (32), and clamping openings are respectively provided on the first clamping member (31) and the second clamping member (32).

3. The sucker rod chuck device according to claim 2, characterized in that: At least one of the clamping ports is configured as a U-shaped opening.

4. The sucker rod chuck device according to claim 2, characterized in that: The first clamping member (31) and the second clamping member (32) are combined into a cylindrical shape. The upper part of the first clamping member (31) and the second clamping member (32) is provided with a clamp that cooperates with the sucker rod (6).

5. The sucker rod chuck device according to claim 1, characterized in that: The guide rail frame (1) has a through hole in the center for the sucker rod (6) to pass through.

6. The sucker rod chuck device according to claim 5, characterized in that: The power assembly (4) includes a hydraulic cylinder (41), a rotating ring (42), a triangular plate (43), and an arc rod (44); A guide cylinder (12) is provided at the lower part of the through hole, and the rotating ring (42) is provided outside the guide cylinder (12). The first corner of the triangular plate (43) is hinged to the rotating plate, the second corner is hinged to a sliding frame (2), and the third corner is hinged to the hydraulic cylinder (41). One end of the arc-shaped rod (44) is hinged to a rotating ring (42), and the other end is hinged to another sliding frame (2).

7. A sucker rod chuck device according to claim 6, characterized in that: The guide cylinder (12) is provided with a positioning hoop (13), and a wear-resistant ring is provided on the upper part of the positioning hoop (13), which supports the rotating ring (42).

8. A sucker rod chuck device according to claim 6, characterized in that: The hydraulic cylinder (41) is equipped with a hydraulic lock (45) to prevent loss of hydraulic power.

9. A sucker rod chuck device according to claim 6, characterized in that: The lower part of the guide rail frame (1) is provided with a protective cover (5).

10. A sucker rod chuck device according to claim 1, characterized in that: A buffer pad (21) is provided between the two sliding frames (2).

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