Deep well rescue salvage hook

Abstract

The utility model discloses a deep well rescue fishing hook which comprises a spiral hook, a hook handle and a chain, the lower end of the hook handle is connected with the upper end of the hook handle, the upper end of the hook handle is connected with the lower end of the chain, the spiral hook is of a spiral structure from bottom to top, the number of turns is two, and the lower end of the spiral hook is a tip. The upper end of the spiral hook vertically extends upwards in the axis direction to form a vertical section, a plurality of barbs are arranged on the spiral hook in the spiral direction of the spiral hook at equal intervals, and the barbs incline inwards and face the hook handle. The spiral hooks are divided into two circles, namely the spiral hooks are distributed into two layers in the longitudinal range, the spiral hooks are matched with the barbs, objects to be fished can be hooked and clamped in the rotating process, the spiral hook is suitable for fishing columnar objects, strip-shaped objects, flexible objects, corpses and other objects falling into a deep well, and fishing personnel are prevented from entering a well for operation.

Description

Technical Field

[0001] The utility model belongs to the technical field of salvage tools, and in particular relates to a deep well rescue salvage hook. Background Art

[0002] During deep well salvage, it is difficult for personnel to go down the well to work due to unfavorable conditions and factors such as small space, darkness, insufficient oxygen supply, excessive content of toxic and harmful gases, and instability of the surrounding structure of the well body. The existing technology usually uses salvage hooks for salvage, such as curved hooks, claw hooks and other salvage hooks. However, such salvage hooks are not easy to hook or get stuck on objects, making salvage difficult. For example, the deep well salvage device disclosed in Chinese invention patent CN201210512307.0 involves a grab hook that is essentially equivalent to an ordinary curved hook. Some downhole electric salvage devices are too complicated in structure and are not practical for actual use, such as the downhole wire rope salvage device disclosed in Chinese invention patent CN202010008147.0. For this reason, it is very necessary to develop a deep well rescue salvage hook that can solve the above problems. Utility Model Content

[0003] The utility model aims to provide a deep well rescue salvage hook which is easy to hook and clamp salvaged objects.

[0004] The purpose of the present utility model is achieved in this way, comprising a spiral hook, a hook handle and a chain, the lower end of the hook handle is connected to the upper end of the hook handle, the upper end of the hook handle is connected to the lower end of the chain, the spiral hook is a spiral structure from bottom to top, the number of turns is 2 turns (i.e., 720° spiral), the lower end of the spiral hook is a pointed end, the upper end of the spiral hook extends vertically upward along the axial direction to form a vertical section, and along the spiral direction of the spiral hook, a number of equally spaced barbs are provided on the spiral hook, and the barbs are inclined inward and toward the hook handle.

[0005] Among them, the diameter and pitch of the spiral hook can be set to multiple specifications according to the common salvaged objects. Before salvaging, the type and size of the salvaged object can be preliminarily judged, and the spiral hook of appropriate specifications can be flexibly selected. After the initial salvage attempt, different specifications of salvage hooks can be replaced and salvaged repeatedly.

[0006] Preferably, the spiral hook and the hook handle are detachably connected, specifically through internal and external thread structures, and the hook handle and the chain are detachably connected, wherein the upper end of the hook handle can be set into a ring shape, and the chain and the ring structure at the upper end of the hook handle are installed together.

[0007] Preferably, the chain is a circular chain, that is, a chain that is linked together. The circular chain is a common chain in the art.

[0008] Preferably, the chain is detachably connected to the lifting device, and the lifting device can be a simple lifting equipment such as a triangular rescue frame well known to those skilled in the art, or a common electric lifting equipment can be used. The detachable connection can use a common quick-release buckle.

[0009] The beneficial effects of the present invention are as follows: the spiral hook of the present invention has two circles, that is, the spiral is distributed in two layers in the longitudinal range, and with the barbs, the object to be salvaged can be hooked and clamped during the rotation process, and it is easy to hook. It is suitable for salvaging columnar objects, strip-shaped objects, flexible objects, corpses and other objects that have fallen into deep wells, and avoids salvage personnel from entering the well to work; the utility model adopts a three-section structural design, which is simple in structure and easy to produce and process. The spiral hook is the main structure for hooking and clamping the object to be salvaged, and the hook handle is used to connect the chain and the spiral hook. The chain can flexibly select a suitable length according to the depth requirements. The spiral hook rotates together during the rotation of the chain, and the hooking situation of the spiral hook can be judged by the change in the force applied during the rotation of the chain. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a structural diagram of the utility model;

[0011] Figure 2 The utility model also includes a structural diagram of the lifting device;

[0012] In the figure: 1- spiral hook, 2- hook handle, 3- chain, 4- barb, 5- lifting device. DETAILED DESCRIPTION

[0013] The present invention is further described below in conjunction with the embodiments and drawings, but is not intended to limit the present invention in any way. Any changes or substitutions made based on the teachings of the present invention fall within the scope of protection of the present invention.

[0014] Example 1

[0015] As attached Figure 1 As shown, the deep well rescue salvage hook of this embodiment includes a spiral hook 1, a hook handle 2 and a chain 3. The lower end of the hook handle 2 is connected to the upper end of the hook handle 2, and the upper end of the hook handle 2 is connected to the lower end of the chain 3. The spiral hook 1 is a spiral structure from bottom to top, with 2 turns. The lower end of the spiral hook 1 is a tip, and the upper end of the spiral hook 1 extends vertically upward along the axis direction to form a vertical section. Along the spiral direction of the spiral hook 1, a number of equally spaced barbs 4 are provided on the spiral hook 1. The barbs 4 are inclined inward and toward the hook handle 2. The chain 3 is a circular chain.

[0016] A deep well is 40 meters deep, and part of a utility pole accidentally falls into the well, with an estimated length of 10 meters. The deep well rescue salvage hook of the present embodiment is used for salvage. The spiral hook 1 reaches the side of the utility pole underground, and the spiral hook 1 is rotated to gradually clamp the utility pole into the spiral of the spiral hook 1. The chain 3 is continuously rotated until it cannot be twisted anymore, and then it is slowly lifted with a little force. Due to the gravity of the utility pole itself, the chain 3 and the spiral hook 1 will naturally tilt, and the barbs 4 on the spiral hook 1 will clamp the utility pole to prevent it from slipping. The salvage is completed by lifting.

[0017] Example 2

[0018] As attached Figure 2 As shown, the deep well rescue salvage hook of this embodiment is based on embodiment 1, and the chain 3 is detachably connected to the lifting device 5; the lifting device 5 is set up at a suitable position at the wellhead; during the specific operation, the chain 3 can be rotated first to feel the change in force, and after hanging it, it can be lifted up using the lifting device 5.

[0019] The working principle and working process of the utility model are as follows: before use, a spiral hook 1 of appropriate size is selected according to the type and size of the object to be salvaged; when in use, the device is sent into the well from the wellhead of a deep well, and after reaching the salvage position, the chain 3 is rotated, and the chain 3 drives the hook handle 2 and the spiral hook 1 to rotate, and the spiral hook 1 is gradually put on the periphery of the object to be salvaged, and can hook and lock columnar objects (telephone poles, water pipes, downhole drill bits, etc.), strip-shaped objects (steel frames, construction frames, etc.), flexible objects (ropes, clothes, mesh, etc.), corpses, etc. that fall into the deep well; during the rotation process, the force change of the rotating chain 3 can be observed, and if the resistance increases significantly, the hooking situation can be judged; the chain 3 is slowly lifted up to complete the salvage operation.

Claims

1. A deep well rescue salvage hook, comprising a spiral hook (1), a hook handle (2) and a chain (3), characterized in that The lower end of the hook handle (2) is connected to the upper end of the hook handle (2), and the upper end of the hook handle (2) is connected to the lower end of the chain (3). The spiral hook (1) is a spiral structure from bottom to top, with two turns. The lower end of the spiral hook (1) is a tip, and the upper end of the spiral hook (1) extends vertically upward along the axis direction to form a vertical section. Along the spiral direction of the spiral hook (1), a plurality of equally spaced barbs (4) are provided on the spiral hook (1), and the barbs (4) are inclined inward and toward the hook handle (2).

2. The deep well rescue salvage hook according to claim 1, characterized in that The spiral hook (1) and the hook handle (2) are detachably connected, and the hook handle (2) and the chain (3) are detachably connected.

3. The deep well rescue salvage hook according to claim 1, characterized in that The chain (3) is a circular chain.

4. The deep well rescue salvage hook according to claim 1, characterized in that The chain (3) is detachably connected to the lifting device (5).

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