Sliding type traction self-locking fishing socket

Abstract

The utility model discloses a sliding type traction self-locking fishing socket, which relates to the technical field of fishing sockets and comprises a fishing socket and a mounting socket, the mounting socket is fixedly connected to the top of the fishing socket, threads are arranged on the outer side of the mounting socket, and a clamping structure is arranged in the fishing socket. And the clamping structure comprises an adjusting sliding block slidably connected to the top of the inner side of the fishing barrel, the bottom of the adjusting sliding block is fixedly connected with driving rods which are annularly distributed at equal intervals, the inner side of each driving rod is fixedly connected with an adjusting seat, and the outer side of each adjusting seat is rotationally connected with a connecting rod. According to the sliding type traction self-locking fishing barrel, a fished object is fixed into the fishing barrel through a clamp formed by the multiple clamping blocks, the object is clamped through a V-shaped structure formed between the connecting rod and the clamping blocks, and compared with a traditional mode that the fished object is fixed through deformation of parts, the shape between the connecting rod and the clamping blocks is changed, so that the fishing barrel is more convenient to use. The deformation range is larger, and the risk of metal fatigue is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of overshot, in particular to a sliding pulling self-locking overshot. Background Art

[0002] An oil overshot generally refers to a device used to capture, measure, and recover oil and gas during oil and gas extraction.

[0003] Existing overshots are prone to falling during use, resulting in secondary salvage operations.

[0004] In order to overcome the above-mentioned defects, a Chinese patent of the prior art (publication number: CN210134840U) discloses a salvage tube, which belongs to the field of oil well tools. The salvage tube includes: a cylinder, a magnet mechanism and a flip mechanism. The flip mechanism is installed on the inner wall of the cylinder. The flip mechanism is used to divide the inner cavity of the cylinder into a first space and a second space when it is not affected by the impact force of the liquid. The first space refers to the space on the side close to the bottom of the cylinder, and the second space refers to the space on the side close to the top of the cylinder. The magnet mechanism is fixed on the inner wall of the first space of the cylinder. The flip mechanism is also used to flip when it is affected by the impact force of the liquid so that the first space and the second space are connected. It can avoid the need for secondary salvage of fallen objects, thereby greatly increasing the salvage efficiency and reducing the labor intensity of the operator.

[0005] Although the existing technology can overcome the above-mentioned shortcomings, other problems still exist during its operation: the existing overshot generally clamps and fixes the object by deforming its internal parts, which easily causes metal fatigue and damage during the deformation process of the parts. Utility Model Content

[0006] The purpose of the utility model is to provide a sliding pulling self-locking overshot to solve the problem that the existing overshot in the above background technology generally clamps and fixes the object by deforming its internal parts, and metal fatigue is easily generated during the deformation process of the parts, resulting in damage.

[0007] To achieve the above object, the present invention provides the following technical solutions: a sliding pull-type self-locking overshot, comprising an overshot and a mounting tube, wherein the mounting tube is fixedly connected to the top of the overshot, and a thread is provided on the outer side of the mounting tube;

[0008] The overshot is provided with a clamping structure, and the clamping structure includes an adjusting slider slidably connected to the top of the inner side of the overshot, the bottom of the adjusting slider is fixedly connected to the driving rods distributed in an annular shape and at equal intervals, and the inner side of each driving rod is fixedly connected to an adjusting seat, the outer side of the adjusting seat is rotatably connected to a connecting rod, and the end of the connecting rod away from the driving rod is rotatably connected to a clamping block;

[0009] An adjustment structure for controlling the position of the sliding block in the overshot tube is provided inside the installation tube.

[0010] Preferably, each adjustment seat on the inner side of the driving rod is distributed in an annular manner with equal distances inside the overshot, and the adjustment seats are distributed in a vertical manner with equal distances inside the driving rod.

[0011] Preferably, the connecting rod and the clamping block are connected to each other to form a V-shaped structure, and the connection between the connecting rod and the clamping block faces the middle of the overshot.

[0012] Preferably, the overshot is provided with annular equidistantly distributed sliding grooves, and each sliding groove is slidably connected to the driving rod, and the overshot is fixedly connected with vertically equidistantly distributed limiting rings.

[0013] Preferably, mounting seats equidistantly distributed in a ring shape are fixedly connected to the interior of the overshot, and each mounting seat is aligned with the slide groove, and each mounting seat is located on the top of the limiting ring.

[0014] Preferably, the adjustment structure includes a limiting tube fixedly connected to the top of the overshot, and the limiting tube is slidably connected to the inside of the mounting ring, and the mounting ring is provided on the inner side of the upper end of the limiting tube.

[0015] Preferably, a spring is fixedly connected between the top of the limiting cylinder and the mounting ring, and a traction block is slidably connected inside the adjusting slider. A traction rope is fixedly connected to the middle of the top of the traction block, and the traction rope is located and extends to the top of the mounting cylinder.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] This sliding, pull-type, self-locking overshot uses multiple clamping blocks to form a fixture that secures the salvaged object within the overshot. A V-shaped structure formed between a connecting rod and the clamping blocks clamps the object. Compared to traditional methods of securing the salvaged object through part deformation, the shape change between the connecting rod and the clamping blocks allows for a wider deformation range and eliminates the risk of metal fatigue.

[0018] Furthermore, when the adjusting slider slides downward, the adjusting slider will drive the driving rod to drive the clamping block to fit more closely with the salvaged object, and by pulling the traction rope to drive the traction block to move, the traction block drives the adjusting slider to slide inside the overshot tube, thereby adjusting the position of the adjusting slider inside the overshot tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the cross-sectional structure of the utility model;

[0021] Figure 3 For this utility model Figure 2 A in the middle is an enlarged structural diagram;

[0022] Figure 4 This is a schematic diagram of the installation tube structure of the utility model;

[0023] Figure 5 This is a schematic diagram of the structure of the adjusting slider of the utility model;

[0024] Figure 6 This is a schematic diagram of the cross-sectional structure of the overshot tube of the utility model.

[0025] In the figure: 1. Overshot tube; 2. Mounting tube; 3. Adjusting slider; 4. Driving rod; 5. Adjusting seat; 6. Connecting rod; 7. Clamping block; 8. Slide; 9. Limiting ring; 10. Mounting seat; 11. Limiting tube; 12. Mounting ring; 13. Spring; 14. Traction block; 15. Traction rope. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] Example 1:

[0028] See also Figure 1 - Figure 6 , the utility model provides the following technical solutions:

[0029] A sliding pull-type self-locking overshot comprises an overshot 1 and a mounting tube 2, wherein the mounting tube 2 is fixedly connected to the top of the overshot 1 and has a thread on the outside of the mounting tube 2;

[0030] A clamping structure is provided inside the overshot 1, and the clamping structure includes an adjustment slider 3 slidably connected to the top of the inner side of the overshot 1. The bottom of the adjustment slider 3 is fixedly connected to the driving rods 4 distributed in an annular shape and at equal intervals. The inner side of each driving rod 4 is fixedly connected to an adjustment seat 5. The outer side of the adjustment seat 5 is rotatably connected to a connecting rod 6. The end of the connecting rod 6 away from the driving rod 4 is rotatably connected to a clamping block 7.

[0031] An adjustment structure for controlling the position of the adjustment slider 3 inside the overshot tube 1 is provided inside the mounting tube 2 .

[0032] Each adjustment seat 5 on the inner side of the driving rod 4 is distributed in an annular manner at equal intervals inside the overshot 1, and the adjustment seats 5 are distributed in a vertical manner at equal intervals on the inner side of the driving rod 4.

[0033] The connecting rod 6 and the clamping block 7 are connected to each other to form a V-shaped structure, and the connection between the connecting rod 6 and the clamping block 7 is toward the center of the inside of the overshot 1.

[0034] The inside of the overshot tube 1 is provided with annular chute 8 which is evenly distributed, and each chute 8 is slidably connected to the driving rod 4. In addition, the inside of the overshot tube 1 is fixedly connected with the limiting ring 9 which is evenly distributed vertically.

[0035] The inside of the overshot 1 is fixedly connected with mounting seats 10 that are equidistantly distributed in a ring shape, and each mounting seat 10 is aligned with the slide groove 8 and each mounting seat 10 is located on the top of the limiting ring 9.

[0036] First, the extension device is used to connect the mounting tube 2 to each other, and the overshot tube 1 and the mounting tube 2 are transported to the inside of the salvage hole through the extension device, and the traction rope 15 is extended upward until it is outside the top of the salvage hole. The overshot tube 1 drives the mounting tube 2 to move downward and connect with the salvaged object, so that the salvaged object slides upward inside the overshot tube 1. At the same time, the traction rope 15 is pulled to drive the adjusting slide 3 to slide inside the overshot tube 1, so that the adjusting slide 3 drives the driving rod 4 to slide upward inside the slide groove 8. When the driving rod 4 slides upward, it will drive the adjusting seat 5 to slide upward, so that the connecting rod 6 drives the clamping block 7 to rotate around the mounting seat 10. The connecting rod 6 and the clamping block 7 move, and the connection between the connecting rod 6 and the clamping block 7 will be close to the inside of the overshot 1. The salvaged object will pass through the inside of the overshot 1. At the same time, the traction rope 15 is loosened. At this time, the connection between the clamping block 7 and the connecting rod 6 will be close to the center of the overshot 1 until the clamping block 7 and the salvaged object fit together. The clamp formed by multiple clamping blocks 7 fixes the salvaged object inside the overshot 1, and the V-shaped structure formed between the connecting rod 6 and the clamping block 7 clamps the object. Compared with the traditional method of fixing the salvaged object by deformation of parts, the shape change between the connecting rod 6 and the clamping block 7 has a larger deformation range and no risk of metal fatigue.

[0037] Example 2:

[0038] On the basis of the first embodiment, an adjustment structure is also disclosed, and its specific structure is as follows:

[0039] The adjustment structure includes a limiting tube 11 fixedly connected to the top of the overshot tube 1 , and the limiting tube 11 is slidably connected to the inside of the mounting ring 12 , and the mounting ring 12 is provided on the inner side of the upper end of the limiting tube 11 .

[0040] A spring 13 is fixedly connected between the top of the limiting cylinder 11 and the mounting ring 12 , and a traction block 14 is slidably connected inside the adjusting slider 3 , a traction rope 15 is fixedly connected to the middle of the top of the traction block 14 , and the traction rope 15 is located and extends to the top of the mounting cylinder 2 .

[0041] When the salvaged object is inside the overshot tube 1, the spring 13 will drive the limiting tube 11 to move downward, and then drive the adjusting slide 3 to slide downward inside the overshot tube 1 through the limiting tube 11. When the adjusting slide 3 slides downward, the adjusting slide 3 will drive the driving rod 4 to drive the clamping block 7 to fit more closely with the salvaged object, and the traction block 14 will be driven to move by pulling the traction rope 15, so that the traction block 14 drives the adjusting slide 3 to slide inside the overshot tube 1, thereby adjusting the position of the adjusting slide 3 inside the overshot tube 1.

[0042] In the description of this utility model, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0043] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A sliding pull-type self-locking overshot, comprising an overshot (1) and a mounting tube (2), wherein the mounting tube (2) is fixedly connected to the top of the overshot (1), and a thread is provided on the outside of the mounting tube (2); Its characteristics are: The overshot tube (1) is provided with a clamping structure, and the clamping structure includes an adjusting slider (3) slidably connected to the top of the inner side of the overshot tube (1), the bottom of the adjusting slider (3) is fixedly connected to driving rods (4) distributed in an annular shape and at equal intervals, and the inner side of each driving rod (4) is fixedly connected to an adjusting seat (5), the outer side of the adjusting seat (5) is rotatably connected to a connecting rod (6), and the end of the connecting rod (6) away from the driving rod (4) is rotatably connected to a clamping block (7); An adjustment structure for controlling the position of the adjustment slider (3) inside the salvage tube (1) is provided inside the installation tube (2).

2. The sliding pull-type self-locking overshot according to claim 1, characterized in that: Each adjustment seat (5) inside the driving rod (4) is distributed in an annular manner at equal intervals inside the overshot tube (1), and the adjustment seats (5) are distributed in a vertical manner at equal intervals inside the driving rod (4).

3. The sliding pull-type self-locking overshot according to claim 2, characterized in that: The connecting rod (6) and the clamping block (7) are connected to each other to form a V-shaped structure, and the connection between the connecting rod (6) and the clamping block (7) faces the middle of the inside of the overshot (1).

4. The sliding pull-type self-locking overshot according to claim 1, characterized in that: The overshot tube (1) is provided with annular equidistantly distributed sliding grooves (8), and each sliding groove (8) is slidably connected to the driving rod (4). The overshot tube (1) is also fixedly connected with vertically equidistantly distributed limiting rings (9).

5. The sliding pull-type self-locking overshot according to claim 4, characterized in that: The overshot tube (1) is fixedly connected to mounting seats (10) distributed in an annular shape and at equal intervals, and each mounting seat (10) is aligned with the slide groove (8), and each mounting seat (10) is located on the top of the limiting ring (9).

6. The sliding pull-type self-locking overshot according to claim 1, characterized in that: The adjustment structure comprises a limiting tube (11) fixedly connected to the top of the overshot tube (1), the limiting tube (11) is slidably connected to the inside of the mounting ring (12), and the mounting ring (12) is provided on the inner side of the upper end of the limiting tube (11).

7. The sliding pull-type self-locking overshot according to claim 6, characterized in that: A spring (13) is fixedly connected between the top of the limiting cylinder (11) and the mounting ring (12), and a traction block (14) is slidably connected inside the adjusting slider (3). A traction rope (15) is fixedly connected to the middle of the top of the traction block (14), and the traction rope (15) is located and extends to the top of the mounting cylinder (2).

Images