A fisher

Abstract

The utility model relates to the technical field of in -well fishing tool, especially a fishing device, including sending main part, the lower extreme fixed connection of sending main part has the vertical pole, is equipped with the clamping mechanism on the vertical pole, the lower extreme fixed connection of vertical pole has the taper head, the outer wall upper end fixed connection of taper head has two vertical clamping blocks. This fishing device cooperates through the clamping mechanism and vertical clamping block, because the anti -skid thread of clamping round sleeve outer wall further enhances the friction force with target object inner wall, when clamping round sleeve is close to target object and is close, continues to pull the sending main part and will drive the plank object to move upwards, realizes the fishing of target object, relative to comparative document, adopts pure mechanical structure design, need not spring and other perishable elastic components, avoid the spring in traditional device under high temperature, high pressure, corrosion environment's elasticity attenuation or jam problem, improves the reliability in the complex environment of well.

Description

Technical Field

[0001] This utility model relates to the field of well-fishing tools, specifically a fishing device. Background Technology

[0002] A well-dredging tool is a specialized device used in the field of well-dredging tools. It is mainly used in scenarios such as eccentric water distributors to deploy, retrieve, and replace blockage devices.

[0003] For example, a retrieval device with announcement number "CN217176552U" incorporates an elastic element. This element applies an elastic force to the inner and outer claws, causing them to move away from each other. This elastic force exerts a torque on the connector, causing it to swing away from the main body of the retrieval device, preventing it from swinging towards the main body. Simultaneously, the connector is constrained by the inner wall of the eccentric water distributor, ensuring that the connector's axis remains parallel to the axis of the main body, allowing for smooth deployment and retrieval. However, in such devices, the downhole environment typically presents high temperature, high pressure, corrosive fluids (and silt impurities). The spring, subjected to contraction, friction, and corrosion in this environment over a long period, may experience elastic decay, corrosion breakage, or jamming, preventing it from continuously applying a stable elastic force and causing the connector to wobble again. Utility Model Content

[0004] The purpose of this invention is to address the problem that the above-mentioned devices are often subjected to high temperature, high pressure, corrosive fluids, and silt impurities in the well environment. The springs are subjected to stretching, friction, and corrosion in such an environment for a long time, which may cause elastic decay, corrosion, breakage, or jamming, resulting in the inability to continuously apply stable elastic force, and thus causing the connector to wobble again. Therefore, this invention proposes a retrieval device.

[0005] To achieve the above objectives, this utility model provides the following technical solution: Design a retrieval device, including a delivery body, a vertical rod fixedly connected to the lower end of the delivery body, a locking mechanism provided on the vertical rod, a cone fixedly connected to the lower end of the vertical rod, and two vertical locking blocks fixedly connected to the upper end of the outer wall of the cone.

[0006] Preferably, the locking mechanism includes a locking sleeve and an inclined surface, and the locking sleeve has two grooves machined on its upper surface.

[0007] Preferably, the inner wall of the clamping sleeve is slidably connected to the vertical rod.

[0008] Preferably, the bevel is machined on the cone head.

[0009] Preferably, the groove is slidably connected to the vertical locking block.

[0010] Preferably, the outer wall of the clamping sleeve is machined with anti-slip threads.

[0011] The present invention proposes a retrieval device with the following advantages: Through the cooperation of the locking mechanism and the vertical locking block, when the main body of the device is lifted, the vertical rod drives the cone head to move upward, which in turn drives the inclined surface to move upward. The upward movement of the inclined surface simultaneously drives the vertical locking block to move upward. The vertical locking block moves upward and enters the sliding groove. The upward movement of the inclined surface causes the locking sleeve to expand. After the locking sleeve expands, it will abut against the inner wall of the connection port of the target object. Because the anti-slip threads on the outer wall of the locking sleeve further enhance the friction with the inner wall of the target object, after the locking sleeve abuts against the target object, continuing to lift the main body of the device will drive the wooden board object to move upward, thereby realizing the retrieval of the target object. Compared with the prior art, the device adopts a purely mechanical structure design, eliminating the need for easily damaged elastic components such as springs. This avoids the problem of elastic decay or jamming of springs in traditional devices under high temperature, high pressure, and corrosive environments, thus improving the reliability in complex downhole environments. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 Diagram showing the engagement of the locking sleeve and the vertical locking block; Figure 3 for Figure 1 A front sectional view; Figure 4 A three-dimensional schematic diagram of the clamping sleeve; Figure 5 for Figure 3 Schematic diagram of part A in the middle.

[0013] In the diagram: 1. Conveying body, 2. Vertical rod, 3. Clamping mechanism, 301. Clamping sleeve, 302. Slide groove, 303. Inclined surface, 4. Conical head, 5. Vertical clamping block. Detailed Implementation

[0014] The present invention will be further described below with reference to the accompanying drawings: See attached document Figure 1-5 : In this embodiment, a retrieval device includes a delivery body 1, a vertical rod 2 fixedly connected to the lower end of the delivery body 1, a locking mechanism 3 provided on the vertical rod 2, a cone 4 fixedly connected to the lower end of the vertical rod 2, the cone 4 is more convenient to extend into the interior of the item to be retrieved, and two vertical locking blocks 5 are fixedly connected to the upper end of the outer wall of the cone 4.

[0015] See attached document Figure 1-5 : The clamping mechanism 3 includes a clamping sleeve 301 and an inclined surface 303. The clamping sleeve 301 has two sliding grooves 302 machined on its upper surface. The inner wall of the clamping sleeve 301 is slidably connected to the vertical rod 2. The clamping sleeve 301 can move up and down on the vertical rod 2. The inclined surface 303 is machined on the cone head 4. The clamping sleeve 301 can move and expand along the inclined surface 303. The slide groove 302 is slidably connected to the vertical clamping block 5. The outer wall of the clamping sleeve 301 is machined with anti-slip threads.

[0016] Working principle: Work process: When it is necessary to deliver a target object, align the delivery device with the delivery location, such as the connection port of a specific downhole device. Apply downward pressure through the delivery body 1, so that the cone 4 is inserted into the corresponding interface of the target object first. The inclination of the cone 4 makes it easier to insert into the corresponding interface of the target object. The cone 4 then drives the entire locking mechanism 3 into the target object.

[0017] When the main body 1 is then lifted upwards, the vertical rod 2 moves the cone head 4 upwards, which in turn moves the inclined plane 303 upwards. The upward movement of the inclined plane 303 simultaneously moves the vertical locking block 5 upwards. The vertical locking block 5 moves upwards and enters the sliding groove 302. The upward movement of the inclined plane 303 causes the locking sleeve 303 to expand. After the locking sleeve 301 expands, it will press against the inner wall of the connection port of the target object. Because the anti-slip threads on the outer wall of the locking sleeve 301 further enhance the friction with the inner wall of the target object, when the locking sleeve 301 presses against the target object, continuing to lift and throw the main body 1 upwards will move the wooden board object upwards, thus achieving the retrieval of the target object.

[0018] Removal process: The operator presses down on the delivery body 1, causing the vertical locking block 5 to disengage from the slide groove 302. Simultaneously, the inclined surface 303 disengages from the clamping sleeve 301. After disengagement, the clamping sleeve 301 retracts. The operator then rotates the delivery body 1, causing the vertical rod 2 to rotate, which in turn rotates the cone head and the vertical locking block 5. After the vertical locking block 5 rotates a quarter turn, it is pulled upwards, engaging with the outer wall of the clamping sleeve 301. This prevents the clamping sleeve 301 from being re-expanded by the inclined surface 303, allowing the clamping sleeve 303 to be removed from the connection port of the target object without expansion. Although this utility model has been illustrated and described with reference to preferred embodiments, those skilled in the art should understand that various changes in form and detail are possible within the scope of the claims.

Claims

1. A casting device, comprising a casting body (1), characterized in that: The lower end of the delivery body (1) is fixedly connected to a vertical rod (2), and a snap-fit ​​mechanism (3) is provided on the vertical rod (2). The lower end of the vertical rod (2) is fixedly connected to a cone head (4), and two vertical snap-fit ​​blocks (5) are fixedly connected to the upper end of the outer wall of the cone head (4).

2. The retrieval device according to claim 1, characterized in that: The snap-fit ​​mechanism (3) includes a snap-fit ​​sleeve (301) and an inclined surface (303), and the snap-fit ​​sleeve (301) has two grooves (302) machined on its upper surface.

3. A retrieval device according to claim 2, characterized in that: The inner wall of the clamping sleeve (301) is slidably connected to the vertical rod (2).

4. A retrieval device according to claim 3, characterized in that: The inclined surface (303) is machined on the cone (4).

5. A retrieval device according to claim 2, characterized in that: The slide groove (302) is slidably connected to the vertical locking block (5).

6. A retrieval device according to claim 2, characterized in that: The outer wall of the clamping sleeve (301) is machined with anti-slip threads.

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