Grabbing device for oil casing coupling

Abstract

The utility model provides a gripping device for an oil casing coupling, which relates to the technical field of gripping machinery and is characterized in that a mounting ring is welded above the top ends of four L-shaped support rods, and a driving motor is fastened at the top end of the mounting ring in a threaded manner; four U-shaped hoisting frames are welded to the vertical rod sections of the four L-shaped supporting rods in a surrounding mode, a circular connecting block is welded to the head ends of the horizontal rod sections of the top ends of the four U-shaped hoisting frames, a hoisting ring is welded to the top end of the circular connecting block, and the hoisting ring is connected with a lifting hook on external hoisting equipment in a hooking mode. The driving motor is located in a shielding space formed by surrounding of the four U-shaped hanging and pulling frames. The four U-shaped hoisting and pulling frames surround to form a cage-shaped protection frame, the cage-shaped protection frame can carry out anti-collision protection on the driving motor, the driving motor is prevented from being directly exposed, the probability that the driving motor is collided and damaged is reduced, and the cost and consumed downtime caused by maintenance and replacement of the driving motor are reduced.

Description

Technical Field

[0001] This utility model relates to the field of gripping machinery technology, and in particular to a gripping device for oil casing couplings. Background Technology

[0002] A casing coupling is a short pipe with internal threads at both ends. It is an important accessory used in the oil drilling and production industry to connect tubing or casing. During the manufacturing process, casing couplings need to be transferred between different stages, requiring a gripping device supplemented by a hoisting device.

[0003] Existing gripping devices are often complex in structure and cumbersome in operation. Many key components in existing devices, such as drive motors, are directly exposed and easily damaged by impacts, increasing maintenance costs and downtime. Utility Model Content

[0004] In view of this, the present invention provides a gripping device for oil casing couplings to solve the problem that the drive motor is directly exposed to the outside, making it susceptible to damage from impacts, which increases maintenance costs and downtime.

[0005] The technical solution proposed by this utility model is: a gripping device for oil casing coupling, specifically including: a cross positioning frame, four L-shaped connecting blocks are welded around the center of the cross positioning frame, and four L-shaped support rods are welded around the top of the four L-shaped connecting blocks.

[0006] A mounting ring is welded to the top of the L-shaped support rods described in four places, and a drive motor is threadedly fastened to the top of the mounting ring; four U-shaped lifting frames are welded around the vertical rods of the L-shaped support rods described in four places, and a circular connecting block is welded to the first end of the horizontal rods at the top of the four U-shaped lifting frames, and a lifting ring is welded to the top of the circular connecting block, and the lifting ring is hooked and connected to the hook on the external lifting equipment.

[0007] The drive motor is located inside the shielded space formed by four U-shaped hanging frames.

[0008] Furthermore,

[0009] The four ends of the cross positioning frame are rotatably connected to four strip swing frames. Each of the four strip swing frames has a gripping block rotatably installed at its head. The four gripping blocks are used to clamp and fix the oil casing coupling.

[0010] Furthermore,

[0011] A threaded drive shaft is rotatably mounted through the center of the cross-shaped positioning frame, and the first ends of the horizontal rods at the top of the four L-shaped support rods are welded together with positioning rings. The top part of the threaded drive shaft is rotatably engaged with the positioning rings.

[0012] Furthermore,

[0013] The drive motor is connected to the top end of the threaded drive shaft for transmission.

[0014] Furthermore,

[0015] A cross-shaped drive component is screwed onto the threaded drive shaft. A threaded sleeve is welded through the center of the cross-shaped drive component, and the threaded sleeve is screwed into the threaded drive shaft.

[0016] Furthermore,

[0017] The four ends of the cross-shaped drive component are rotatably connected to four second linkages.

[0018] Furthermore,

[0019] The top of each of the four horizontal support rods on the cross positioning frame is provided with a T-shaped sliding groove, and a force transmission component is slidably installed in each of the four T-shaped sliding grooves.

[0020] The force transmission component is composed of a bottom sliding plate and two vertical ear plates symmetrically welded to the top of the sliding plate. The tail end of the second connecting rod is rotatably connected to the top of the inner vertical ear plate, and the top of the outer vertical ear plate is rotatably connected to the top of the strip swing frame.

[0021] The gripping device for oil casing couplings provided by this utility model has the following beneficial effects:

[0022] First, four U-shaped hanging frames surround a cage-like protective frame, with the drive motor built inside. The cage-like protective frame can provide anti-collision protection for the drive motor. Compared with existing technologies, it avoids the direct exposure of the drive motor, which helps to reduce the probability of the drive motor being damaged by impact, and reduces the cost and downtime incurred due to the maintenance and replacement of the drive motor.

[0023] Second, the four U-shaped lifting frames can be used to protect the drive motor from collisions and to transmit lifting force, thus achieving a dual-purpose effect. This eliminates the need for an additional anti-collision protection mechanism for the drive motor, which helps to simplify the overall structure and manufacturing cost of the gripping device. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings of the embodiments will be briefly described below.

[0025] The accompanying drawings described below are only related to some embodiments of the present invention and are not intended to limit the scope of the present invention.

[0026] See the attached diagram.

[0027] Figure 1This diagram shows the overall clamping state of the present invention in use;

[0028] Figure 2 This diagram shows the overall structure of the present invention separated from the oil casing coupling;

[0029] Figure 3 A schematic diagram of the overall bottom side structure of this utility model is shown;

[0030] Figure 4 This diagram shows the disassembled state of the strip swing frame of this utility model;

[0031] Figure 5 A schematic diagram showing the disassembled state of the cross-shaped drive component of this utility model is shown;

[0032] Figure 6 A schematic diagram of the disassembled state of the threaded drive shaft of this utility model is shown.

[0033] List of reference numerals in the attached diagram:

[0034] 1. Cross-shaped positioning frame; 101. T-shaped slide rail; 102. Force transmission component; 103. Lifting ring; 104. L-shaped support rod; 105. Mounting ring; 106. U-shaped lifting frame;

[0035] 2. Strip-shaped swing frame; 201. Grab block; 202. First connecting rod;

[0036] 3. Cross-shaped drive component; 301. Second connecting rod;

[0037] 4. Drive motor;

[0038] 5. Threaded drive shaft. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this 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, not all, of the embodiments of this utility model. Based on the described embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0040] Please refer to Figures 1 to 6 ;

[0041] Example 1:

[0042] This utility model proposes a gripping device for oil casing coupling, including: a cross positioning frame 1, four L-shaped connecting blocks are welded around the center of the cross positioning frame 1, and four L-shaped support rods 104 are welded around the top of the four L-shaped connecting blocks.

[0043] An installation ring 105 is welded to the top of the four L-shaped support rods 104, and a drive motor 4 is threadedly fastened to the top of the installation ring 105; four U-shaped lifting frames 106 are welded around the vertical rod section of the four L-shaped support rods 104, and a circular connecting block is welded to the first end of the horizontal rod section at the top of the four U-shaped lifting frames 106, and a lifting ring 103 is welded to the top of the circular connecting block. The lifting ring 103 is hooked and connected to the hook on the external lifting equipment.

[0044] The drive motor 4 is located inside the shielded space formed by the four U-shaped suspension frames 106 surrounding it;

[0045] Four U-shaped hanging frames 106 surround a cage-shaped protective frame. The drive motor 4 is built into the cage-shaped protective frame. The cage-shaped protective frame can protect the drive motor 4 from impact. Compared with the existing technology, it avoids the direct exposure of the drive motor 4 and helps to reduce the probability of the drive motor 4 being damaged by impact.

[0046] The lifting and pulling force of the hoisting equipment is transmitted to the four L-shaped support rods 104 through the four U-shaped lifting frames 106, and then to the cross positioning frame 1 through the four L-shaped support rods 104. Thus, the four U-shaped lifting frames 106 can be used to transmit the lifting and pulling force of the external hoisting equipment to the entire gripping device. This allows the four U-shaped lifting frames 106 to be used for anti-collision protection of the drive motor 4 and to transmit the lifting and pulling force, achieving a dual-purpose effect. This eliminates the need to configure an additional anti-collision protection mechanism for the drive motor 4, which helps to simplify the overall structure and manufacturing cost of the gripping device.

[0047] Based on Example 1, Example 2:

[0048] The four ends of the cross positioning frame 1 are rotatably connected to four strip swing frames 2. Each of the four strip swing frames 2 has a gripping block 201 rotatably installed at its head. The four gripping blocks 201 are used to clamp and fix the oil casing coupling.

[0049] Preferred,

[0050] A threaded drive shaft 5 is rotatably mounted through the center of the cross positioning frame 1, and the first ends of the horizontal rod segments at the top of the four L-shaped support rods 104 are welded together with positioning rings. The top part of the threaded drive shaft 5 is rotatably engaged with the positioning rings.

[0051] Preferred,

[0052] The drive motor 4 is connected to the top end of the threaded drive shaft 5 for transmission.

[0053] Preferred,

[0054] A cross drive component 3 is screwed onto the threaded drive shaft 5. A threaded sleeve is welded through the center of the cross drive component 3, and the threaded sleeve is screwed into the threaded drive shaft 5.

[0055] Preferred,

[0056] The four ends of the cross-shaped drive component 3 are rotatably connected to four second links 301.

[0057] Preferred,

[0058] The top of each of the four horizontal support rods on the cross positioning frame 1 is provided with a T-shaped slide groove 101, and a force transmission component 102 is slidably installed in each of the four T-shaped slide grooves 101. The force transmission component 102 is composed of a bottom sliding plate and two vertical ear plates symmetrically welded to the top of the sliding plate. The tail end of the second connecting rod 301 is rotatably connected to the top of the inner vertical ear plate, and the top of the outer vertical ear plate is rotatably connected to the top of the strip swing frame 2 with the first connecting rod 202.

[0059] The four first connecting rods 202, the four strip-shaped swing frames 2, and the four force transmission components 102 are connected to form a four-crank slider mechanism. Through this four-crank slider mechanism, the four force transmission components 102 can be pushed and driven to swing inward and outward by sliding outward synchronously, controlling the four gripping blocks 201 to clamp or separate from the oil casing coupling, thus tightening or loosening the oil casing coupling. The four force transmission components 102 are also connected to the four-crank slider mechanism together with the cross drive component 3 and the four second connecting rods 301. Through this four-mechanism, the cross drive component 3 can be pushed and driven to slide inward and outward synchronously by sliding up and down. The threaded drive shaft 5 can be pushed and driven to slide up and down by rotating in both directions. The drive motor 4 can drive the threaded drive shaft 5 to rotate in both directions to provide tightening and loosening driving force for the four gripping blocks 201.

[0060] Working principle: Before use, the lifting ring 103 needs to be hooked and connected to the hook on the external hoisting equipment, and the entire gripping device needs to be hooked and connected to the hoisting equipment. When in use, first start and control the drive motor 4 to rotate clockwise, driving and controlling the four gripping blocks 201 to clamp and fix them to the oil casing coupling. Then, the hoisting equipment lifts the gripping device and the oil casing coupling. Under the lifting action of the hoisting equipment, the gripping device grabs and lifts the oil casing coupling. After the oil casing coupling is grabbed and lifted, it continues to be transferred and lowered for unloading by the hoisting equipment. After the oil casing coupling is transferred to the position and touches the ground, start and control the drive motor 4 to rotate counterclockwise, driving and controlling the four gripping blocks 201 to separate from the oil casing coupling and release the oil casing coupling. This completes one gripping and transfer of the oil casing coupling.

[0061] The following points should be noted in this article:

[0062] 1. The accompanying drawings of this utility model embodiment only involve the structure involved in this utility model embodiment; other structures can refer to general designs.

[0063] 2. Where there is no conflict, the embodiments of this utility model and the features in the embodiments can be combined with each other to obtain new embodiments.

[0064] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A gripping device for oil casing couplings, comprising: A cross-shaped positioning frame (1) is provided, with four L-shaped connecting blocks welded around its center position, and four L-shaped support rods (104) welded around the top of the four L-shaped connecting blocks. The feature is that an installation ring (105) is welded above the top of the four L-shaped support rods (104), and a drive motor (4) is threadedly fastened to the top of the installation ring (105); four U-shaped lifting frames (106) are welded around the vertical rod section of the four L-shaped support rods (104), and a circular connecting block is welded to the first end of the horizontal rod section at the top of the four U-shaped lifting frames (106), and a lifting ring (103) is welded to the top of the circular connecting block, and the lifting ring (103) is hooked and connected to the hook on the external lifting equipment; The drive motor (4) is located inside the shielded space formed by the four U-shaped hanging frames (106).

2. The gripping device for oil casing couplings according to claim 1, characterized in that, The four ends of the cross positioning frame (1) are rotatably connected to four strip swing frames (2), and the head ends of the four strip swing frames (2) are rotatably installed with grab blocks (201). The four grab blocks (201) are used to clamp and fix the oil casing coupling.

3. The gripping device for oil casing couplings according to claim 1, characterized in that, The threaded drive shaft (5) is rotatably mounted through the center of the cross positioning frame (1), and the first ends of the horizontal rod segments at the top of the four L-shaped support rods (104) are welded together with positioning rings. The top part of the threaded drive shaft (5) is rotatably engaged with the positioning rings.

4. The gripping device for oil casing couplings according to claim 3, characterized in that, The drive motor (4) is driven by the top end of the threaded drive shaft (5).

5. The gripping device for oil casing couplings according to claim 3, characterized in that, A cross drive component (3) is screwed onto the threaded drive shaft (5). A threaded sleeve is welded through the center of the cross drive component (3), and the threaded sleeve is screwed into the threaded drive shaft (5).

6. The gripping device for oil casing couplings according to claim 5, characterized in that, The four ends of the cross drive (3) are rotatably connected to four second links (301).

7. A gripping device for oil casing couplings according to claim 6, characterized in that, The top of the four horizontal support rods on the cross positioning frame (1) is provided with T-shaped slide grooves (101), and force transmission components (102) are slidably installed in the four T-shaped slide grooves (101). The force transmission component (102) is composed of a bottom sliding plate and two vertical ear plates symmetrically welded to the top of the sliding plate. The tail end of the second connecting rod (301) is rotatably connected to the top of the inner vertical ear plate, and the top of the outer vertical ear plate is rotatably connected to the top of the strip swing frame (2).

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