A downhole wireline cutter for a water well

Abstract

The utility model relates to the technical field of water well emergency repair, specifically relates to a water well underground rope cutting machine, include: submersible motor, the upper cover middle part is provided with transmission shaft, the top of transmission shaft is provided with cutting assembly, a plurality of stand, annular arrangement is set up on the upper cover, the lower extreme is connected with the upper cover, the upper extreme is connected with each other, movable door, its lower extreme is hinged with the upper cover, one side of movable door is provided with pulley assembly, automatic unhooking assembly, its lower extreme is hung in the upper end part of stand, and the upper end is connected with the pull rope, connecting rope, one end is connected with the upper end part of automatic unhooking assembly, the other end is connected with the middle part of movable door one side towards cutting assembly, and the middle part of connecting rope is arranged on pulley assembly, the utility model discloses the device is put down to the well bottom through the pull rope, and the movable door is pushed to rope contact cutting assembly by pulling the steel wire rope, to make the rope be cut, and the success rate of water well emergency repair is improved.

Description

Technical Field

[0001] This utility model relates to the field of water well repair technology, and more specifically, to a water well downhole rope cutting machine. Background Technology

[0002] Water wells, as important water conservancy facilities, are widely used in agricultural irrigation, drinking water for humans and livestock, and industrial production. However, during long-term use, well walls often collapse due to factors such as changes in geological conditions, material aging, construction quality, or external loads. This problem mainly manifests as the peeling of soil and rock from the well wall and damage to the lining structure, causing debris such as cables, stones, wood, and mud to fall into the well, easily jamming equipment such as water pump units, hoisting ropes, water pipes, and cables.

[0003] In the event of a pump jamming accident, the existing pump system cannot be pulled out of the well, and the new pump cannot be lowered to the designed depth due to the blockage of the well's effective passageway, rendering the entire well unusable and completely unusable. Such situations not only cause equipment damage and water waste but also seriously affect regional agricultural production and drinking water safety, negatively impacting national infrastructure construction and rural revitalization. Currently, emergency repair technologies for such accidents are not yet perfect. Traditional methods such as hook retrieval and forceful pulling are often inefficient and easily further damage the well wall structure; while existing small cutting devices generally suffer from limited operating depth, insufficient power, difficulty in orientation, and poor adaptability to underwater operations, making it difficult to effectively address the need to clear ropes, cables, and accumulated debris from inside the well.

[0004] Therefore, it is necessary to provide a downhole rope cutting machine for water wells, which aims to solve the problem that existing water well emergency repair technologies cannot efficiently and reliably complete the cutting of flexible components such as ropes and cables in narrow well environments. Utility Model Content

[0005] In view of this, this utility model addresses the shortcomings of the existing technology by proposing a water well downhole rope cutting machine, which aims to solve the problem that existing water well accident repair technology cannot efficiently and reliably complete the cutting of flexible components such as ropes and cables in narrow well environments.

[0006] This utility model provides a downhole rope cutting machine for water wells, comprising: A submersible motor has a drive shaft in the middle of its upper cover, and a cutting component at the top of the drive shaft for cutting ropes. The upper cover has several columns arranged in a ring on it. The lower ends of the columns are connected to the upper cover, and the upper ends of the columns are connected to each other. A movable door, the lower end of which is hinged to the upper cover, is used to push a rope closer to the cutting assembly, and a pulley assembly is provided on one side of the movable door; An automatic unhooking assembly is attached to the upper end of the column at its lower end, and a lifting rope is connected to the upper end of the automatic unhooking assembly. The automatic unhooking assembly is used to drive the submersible motor to move. A connecting rope, one end of which is connected to the upper end of the automatic unhooking assembly, and the other end of which is connected to the middle of the side of the movable door facing the cutting assembly, with the middle of the connecting rope passing through the pulley assembly.

[0007] Furthermore, the cutting assembly includes: A cutting disc has a mounting hole in its center, and the cutting disc is sleeved on the top end of the drive shaft through the mounting hole; There are two clamping plates, which are connected to the upper and lower surfaces of the cutting plate by means of a connector.

[0008] Furthermore, the movable door includes: The door body, the lower end of which is hinged to the upper cover; Reinforcing ribs are provided in the middle of the door body; A protrusion is provided at the top of the door body on the side near the cutting assembly; A connecting part is disposed in the middle of the reinforcing rib on the side near the cutting assembly, and the connecting part is used to connect the connecting rope.

[0009] Furthermore, the automatic unhooking component includes: The hook body has its lower end attached to the upper end of the column; The connecting seat is rotatably connected to the two side walls of the middle part of the hook body; The lifting lug, located at the top of the connecting seat, is used to connect the connecting rope and the lifting rope.

[0010] Furthermore, the hook body has a counterweight and a hook, the counterweight and the hook being an integral structure, and the counterweight extending toward the side where the hook is bent.

[0011] Furthermore, a connecting ring is provided on the lower side wall below the movable door where the submersible motor is located.

[0012] Furthermore, the aforementioned wellbore downhole rope cutting machine also includes: An elastic pull rope, one end of which is connected to the connecting part, and the other end of which is connected to the connecting ring.

[0013] Furthermore, the aforementioned wellbore downhole rope cutting machine also includes: A first limiter is disposed on a column adjacent to the pulley assembly and located above the pulley assembly. The first limiter is used to limit the movement of the connecting rope.

[0014] Furthermore, the aforementioned wellbore downhole rope cutting machine also includes: The second limiter is installed on the column adjacent to the movable door and located above the movable door. The second limiter is used to limit the rope.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: By setting a submersible motor, a drive shaft is set in the middle of the upper cover, and a cutting component is set at the top of the drive shaft, so that the cutting component can rotate under the drive of the submersible motor, thereby cutting the rope. By setting several columns, the columns are arranged in a ring on the upper cover, the lower ends of the columns are connected to the upper cover, and the upper ends of the columns are connected to each other. The columns are set vertically on the upper cover, and the upper ends of the columns converge and connect. By setting the lower end of the movable door to be hinged to the upper cover, the movable door can move toward or away from the cutting component, so that the rope can be pushed by the movable door to approach the cutting component. A pulley assembly is also set on one side of the movable door. By setting an automatic release component, the lower end of which is hung on the upper end of the column, and the upper end of the automatic release component is connected to a lifting rope, so that after the automatic release component is hooked on the upper end of the column, the submersible motor is moved by the lifting rope. One end of a connecting rope is connected to the upper part of the automatic unhooking assembly, and the other end is connected to the middle of the side of the movable door facing the cutting assembly. The middle of the connecting rope is threaded through the pulley assembly. After the submersible motor is lowered to the bottom of the well, the automatic unhooking assembly can be separated from the column. Then, by lifting the lifting rope, the automatic unhooking assembly is lifted. The automatic unhooking assembly then pulls the connecting rope, causing the movable door to move closer to the cutting assembly under the tension of the connecting rope. This pushes the rope closer to the cutting assembly, so that the cutting assembly can cut the rope.

[0016] In summary, this utility model's downhole rope cutting machine for water wells uses a lifting rope connected to an automatic unhooking component to hook the tops of several uprights, allowing the equipment to be lowered into the well. The automatic unhooking component then separates from the uprights. Pulling the lifting rope causes the connecting rope, under the pull of the automatic unhooking component, to pull and close the movable gate. The top of the movable gate then pushes the rope towards and into contact with the cutting component, causing the rope to be cut. Through the connecting lifting action of the lifting rope and the connecting rope, the movable gate and the cutting component work together, allowing the rope to be precisely cut. The entire process is time-saving and labor-saving, thus quickly restoring the water well's function and reducing economic losses. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the water well downhole rope cutting machine provided in an embodiment of the present utility model; Figure 2 A partial front view of the structure of the downhole rope cutting machine for water wells provided in this embodiment of the utility model; Figure 3 for Figure 2 The enlarged view of the structure at point A is a schematic diagram of the structure of the cutting component provided in this embodiment of the present invention. Figure 4 A schematic diagram of the structure of the movable door provided in an embodiment of this utility model; Figure 5 This is a schematic diagram of the structure of the automatic unhooking assembly provided in an embodiment of the present utility model; Figure 6 This is a front view of the automatic unhooking assembly provided in an embodiment of the present invention.

[0018] The components are as follows: 100, submersible motor; 110, drive shaft; 120, top cover; 200, cutting assembly; 210, cutting blade; 220, clamping plate; 230, connector; 300, column; 400, movable door; 410, door body; 420, reinforcing rib; 430, protrusion; 440, connecting part; 500, pulley assembly; 600, automatic unhooking assembly; 610, hook body; 611, counterweight; 612, hook part; 620, connecting seat; 630, lifting lug; 700, lifting rope; 800, connecting rope; 900, elastic pull rope; 1000, first limiter; 1100, second limiter. Detailed Implementation

[0019] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0020] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0021] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0022] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0023] See Figure 1-2 As shown, this embodiment provides a water well downhole rope cutter, including a submersible motor 100, a cutting assembly 200, a column 300, a movable door 400, a pulley assembly 500, an automatic unhooking assembly 600, a lifting rope 700, and a connecting rope 800.

[0024] Specifically, the submersible motor 100 has a drive shaft 110 located in the middle of its upper cover 120. The drive shaft 110 can extend naturally from inside the submersible motor 100, or it can be connected to the output shaft of the submersible motor 100 via a one-way bearing. The extension length of the drive shaft 110 is not less than 20 cm. The top end face of the drive shaft 110 has a screw hole.

[0025] Specifically, a cutting assembly 200 is provided at the top end of the drive shaft 110. The cutting assembly 200 is fixedly installed at the top end of the drive shaft 110. The installation method is screw connection, that is, screws are inserted into the screw holes on the top end face of the drive shaft 110 to fix the cutting assembly 200 to the top end of the drive shaft 110.

[0026] Specifically, several uprights 300 are provided, preferably three. The three uprights 300 are arranged in a ring on the upper cover 120, with the lower end of each upright connected to the upper cover 120. The fixing method is welding, that is, welding the bottom of each upright 300 to the upper cover 120 of the motor 100. The upper ends of the three uprights 300 are interconnected. The interconnection method is welding. The length of each upright 300 is 30 centimeters.

[0027] Specifically, the power cord of the submersible motor 100 is threaded through a power cord protection tube and electrically connected to the submersible motor 100. Alternatively, the power cord can be secured to a column 300 using bristles, thus limiting the power cord and preventing damage from the cutting component 200. Preferably, the power cord is first threaded through the power cord protection tube, and then the power cord protection tube is vertically fixed to the top cover 120. The fixing method is welding. The power cord is a cable connecting the submersible motor 100 to an electrical switch on the ground, and its length is 80-100 meters. The length of the power cord protection tube is 25 centimeters.

[0028] Specifically, the lower end of the movable door 400 is hinged to the upper cover 120. The hinge method is either through a pin connection or through a hinge, etc. A pin connection is preferred.

[0029] Specifically, a pulley assembly 500 is provided on one side of the movable door 400. The pulley assembly 500 is fixed to the upper cover 120. The fixing method is welding, that is, the bottom of the pulley assembly 500 is welded to the upper cover 120. The top height of the pulley assembly 500 is 7-8 cm.

[0030] Specifically, the pulley assembly 500 includes a bracket, a pulley, and a bearing. The bracket 610 is fixed to the upper cover 120 by welding. The pulley is rotatably mounted on the top of the bracket via the bearing. The diameter of the pulley is greater than or equal to 4 cm.

[0031] Specifically, the automatic release assembly 600 has its lower end attached to the upper end of the column 300. That is, the automatic release assembly 600 has a hook portion configured to hook onto the confluence of the three columns 300. In use, the hook portion of the automatic release assembly 600 hooks onto the confluence of the three columns 300, allowing the device to move up and down under the hooking action of the automatic release assembly 600. Furthermore, when not subjected to the weight of the device, the hook portion of the automatic release assembly 600 automatically flips over, thereby separating from the confluence of the three columns 300.

[0032] Specifically, the upper end of the automatic unhooking assembly 600 is connected to a lifting rope 700.

[0033] Specifically, the lifting rope 700 is connected to the automatic unhooking assembly 600. The lifting rope 700 can be a 2 cm thick nylon rope or hemp rope. The lifting rope 700 cannot be a steel wire rope, because steel wire rope does not have elasticity and may cause the device to easily unhook itself when lowered into the well.

[0034] Specifically, the connecting rope 800 has one end connected to the upper end of the automatic unhooking assembly 600, and the other end connected to the middle of the side of the movable door 400 facing the cutting assembly 200. The middle of the connecting rope 800 is threaded through the pulley assembly 500. That is, one end of the connecting rope is connected to the movable door 400, and the other end passes around the pulley assembly 500 and connects to the automatic unhooking assembly 600. The connecting rope 800 is preferably a steel wire rope with a diameter of 5-6 cm.

[0035] Understandably, by setting up a submersible motor 100, a drive shaft 110 is located in the middle of its upper cover 120, and a cutting component 200 is located at the top of the drive shaft 110. This allows the cutting component 200 to rotate under the drive of the submersible motor 100, thereby cutting the rope. Several uprights 300 are arranged in a ring on the upper cover 120, with their lower ends connected to the upper cover 120 and their upper ends interconnected. The uprights 300 are vertically mounted on the upper cover 120, and their upper ends converge and connect. A movable door 400 is hinged to the upper cover 120 at its lower end, allowing the door to move towards or away from the cutting component 200, enabling the rope to approach the cutting component 200 under the push of the movable door 400. A pulley assembly 500 is also provided on one side of the movable door 400. An automatic unhooking assembly 600 is installed, with its lower end hanging on the upper end of the column 300. A lifting rope 700 is connected to the upper end of the automatic unhooking assembly 600, allowing the submersible motor 100 to move after the automatic unhooking assembly 600 is hooked onto the upper end of the column 300 and the lifting rope 700 is used to move it. A connecting rope 800 is installed, with one end connected to the upper end of the automatic unhooking assembly 600 and the other end connected to the middle of the side of the movable door 400 facing the cutting assembly 200. The middle of the connecting rope 800 is threaded through the pulley assembly 500. After the submersible motor 100 is lowered to the bottom of the well, the automatic unhooking assembly 600 can be separated from the column 300. Then, the automatic unhooking assembly 600 is lifted by the lifting rope 700, and the automatic unhooking assembly 600 then pulls the connecting rope 800, so that the movable door 400 moves closer to the cutting assembly 200 under the tension of the connecting rope 800, thereby pushing the rope closer to the cutting assembly 200 so that the cutting assembly 200 can cut the rope.

[0036] In summary, by connecting the lifting rope 700 to the automatic release assembly 600 and hooking it onto the tops of several columns 300, the equipment is lowered into the well. Then, the automatic release assembly 600 separates from the columns 300. Pulling the lifting rope 700 causes the connecting rope 800 to pull the movable gate 400, closing it. The top of the movable gate 400 then pushes the rope towards and into contact with the cutting assembly 200, resulting in the rope being cut by the cutting assembly 200. Through the connecting lifting action of the lifting rope 700 and the connecting rope 600, the movable gate 400 and the cutting assembly 200 work together, allowing the rope to be precisely cut by the cutting assembly 200. The entire process is time-saving and labor-saving, thus quickly restoring the well's function and reducing economic losses.

[0037] See Figure 1-2 As shown, in some embodiments of this utility model, the submersible motor 100 is a two-phase or three-phase submersible pump motor with a power of not less than 2000W. The submersible motor 100 can be obtained by disassembling a water pump, removing the pump head and impeller assembly at the top of the water pump, that is, only retaining the motor and drive shaft of the water pump. The submersible motor 100 can also be obtained by disassembling an old water pump, as long as the motor can rotate normally.

[0038] It is understandable that two-phase motors and three-phase motors are not interchangeable; a power converter must be installed on the power supply for them to be used interchangeably.

[0039] See Figure 2-3 As shown, in some embodiments of this utility model, the cutting assembly 200 includes a cutting blade 210, a clamping blade 220, and a connector 230.

[0040] Specifically, the cutting disc 210 has a mounting hole at its center. Multiple first connecting holes are provided around the mounting hole. The cutting disc 210 is fitted onto the top end of the drive shaft 110 through the mounting hole. A screw is inserted into the mounting hole, and then the screw is inserted into a screw hole on the top end face of the drive shaft 110 to fix the cutting disc 210 to the top end of the drive shaft 110.

[0041] Specifically, there are two clamping plates 220, each with multiple first connecting holes.

[0042] Specifically, the connector 230 passes through the corresponding first connecting hole and clamps and fixes the cutting disc 210 between the two clamping discs 220. The connector 230 can be a bolt and nut.

[0043] Continue reading Figure 2-3 As shown, in some embodiments of this utility model, the cutting disc 210 is a grinding wheel cutting disc with an outer diameter of 100 mm and a central mounting hole diameter of 16 mm.

[0044] See Figure 1-2 and Figure 4 As shown, in some embodiments of this utility model, the movable door 400 includes a door body 410, a reinforcing rib 420, a protrusion 430, and a connecting part 440.

[0045] Specifically, the door body 410 is hinged at its lower end to the upper cover 120. The hinge connection can be via a pin or a hinge, etc. A pin connection is preferred. The door body is a rectangular frame.

[0046] Specifically, there are preferably two reinforcing ribs 420. The two reinforcing ribs are arranged side-by-side in the middle of the door body 410. The reinforcing ribs 420 are welded to the middle of the door body 410. A gap exists between the two reinforcing ribs 420 for a rope to pass through.

[0047] Specifically, the protrusion 430 is located at the top of the door body 410 near the cutting assembly 200. The protrusion 430 is perpendicular to the door body 410.

[0048] Specifically, there are preferably two connecting portions 440, each disposed in the middle of a corresponding reinforcing rib 420. One connecting portion 440 is used to connect the connecting rope 800.

[0049] Continue reading Figure 2 and Figure 4 As shown, in some embodiments of this utility model, the movable door 400 is made of round steel with a diameter of 12 mm.

[0050] See Figure 1-2 and Figure 5-6 As shown, in some embodiments of this utility model, the automatic unhooking assembly 600 includes a hook body 610, a counterweight part 611, a hook part 612, a connecting seat 620, and a lifting lug 630.

[0051] Specifically, the hook body 610 has its lower end attached to the upper end of the column 300. That is, the hook body 610 has a hook portion that is configured to hook onto the convergence point of the three columns 300.

[0052] Specifically, the connecting seat 620 is rotatably connected to the two side walls of the middle part of the hook body 610. The connecting seat 620 is a rectangular iron block thicker than the hook body 610, and its lower part has a groove that runs through the side wall. The two opposite walls inside the groove have mounting holes. The middle side wall of the hook body 610 has a protrusion that is movably installed in the mounting hole.

[0053] Specifically, the lifting lug 630 is disposed at the top of the connecting seat 620 and is used to connect the connecting rope 800 and the lifting rope 700. The lifting lug 630 is welded to the top of the connecting seat 620.

[0054] Continue reading Figure 1-2 and Figure 5-6As shown, in some embodiments of the present invention, the hook body 610 has a counterweight 611 and a hook 612, the counterweight 611 and the hook 612 are an integral structure, and the counterweight 611 extends toward the side where the hook 612 is bent.

[0055] Understandably, the hook 610 is cut from a 6mm thick iron plate, with one side of the upper part protruding 3-4cm as a counterweight 611, and the lower part being hook-shaped as a hook 612. The counterweight 611 protrudes in the same direction as the hook 612. A protrusion is provided at the connection between the counterweight 611 and the hook 612.

[0056] See Figure 1-2 As shown, in some embodiments of this utility model, the column 300 is made of round steel with a diameter of 14 mm.

[0057] See Figure 1-2 As shown, in some embodiments of this utility model, the power cord protection tube 400 is made of metal.

[0058] See Figure 1-2 As shown, in some embodiments of this utility model, a connecting ring is provided on the lower side wall of the submersible motor 100 located below the movable door 400.

[0059] See Figure 1-2 As shown, in some embodiments of this utility model, the above-mentioned well downhole rope cutting machine also includes an elastic pull rope 900.

[0060] Specifically, the elastic pull rope 900 has one end connected to the connecting part 440 and the other end connected to the connecting ring. The elastic pull rope 900 has a diameter of 10 mm. The elastic pull rope 900 can be made of a round, high-elasticity rubber band, etc.; that is, the elastic pull rope 900 only needs to have high elasticity. The function of the elastic pull rope 900 is to keep the movable door 400 in the open state during the process of lowering it into the well, relying on its elastic force.

[0061] See Figure 1-2 As shown, in some embodiments of this utility model, the above-mentioned well downhole rope cutting machine further includes a first limiter 1000.

[0062] Specifically, the first limiter 1000 is set on the column adjacent to the pulley assembly 500 and located above the pulley assembly 500. The first limiter 900 is used to limit the connecting rope 700 so that the connecting rope 700 maintains a certain distance from the cutting assembly 200 to prevent the connecting rope 700 from being damaged by the cutting disc.

[0063] See Figure 1-2 As shown, in some embodiments of this utility model, the above-mentioned well downhole rope cutting machine further includes a second limiter 1100.

[0064] Specifically, the second limiter 1100 is installed on the post 300 adjacent to the movable door 400 and located above the movable door 400. The second limiter 1000 is used to limit the rope.

[0065] Understandably, by setting up a submersible motor 100, a drive shaft 110 is located in the middle of its upper cover 120, and a cutting component 200 is located at the top of the drive shaft 110. This allows the cutting component 200 to rotate under the drive of the submersible motor 100, thereby cutting the rope. Several uprights 300 are arranged in a ring on the upper cover 120, with their lower ends connected to the upper cover 120 and their upper ends interconnected. The uprights 300 are vertically mounted on the upper cover 120, and their upper ends converge and connect. A movable door 400 is hinged to the upper cover 120 at its lower end, allowing the door to move towards or away from the cutting component 200, enabling the rope to approach the cutting component 200 under the push of the movable door 400. A pulley assembly 500 is also provided on one side of the movable door 400. An automatic unhooking assembly 600 is installed, with its lower end hanging on the upper end of the column 300. A lifting rope 700 is connected to the upper end of the automatic unhooking assembly 600, allowing the submersible motor 100 to move after the automatic unhooking assembly 600 is hooked onto the upper end of the column 300 and the lifting rope 700 is used to move it. A connecting rope 800 is installed, with one end connected to the upper end of the automatic unhooking assembly 600 and the other end connected to the middle of the side of the movable door 400 facing the cutting assembly 200. The middle of the connecting rope 800 is threaded through the pulley assembly 500. After the submersible motor 100 is lowered to the bottom of the well, the automatic unhooking assembly 600 can be separated from the column 300. Then, the automatic unhooking assembly 600 is lifted by the lifting rope 700, and the automatic unhooking assembly 600 then pulls the connecting rope 800, so that the movable door 400 moves closer to the cutting assembly 200 under the tension of the connecting rope 800, thereby pushing the rope closer to the cutting assembly 200 so that the cutting assembly 200 can cut the rope.

[0066] In summary, by connecting the lifting rope 700 to the automatic release assembly 600 and hooking it onto the tops of several columns 300, the equipment is lowered into the well. Then, the automatic release assembly 600 separates from the columns 300. Pulling the lifting rope 700 causes the connecting rope 800 to pull the movable gate 400, closing it. The top of the movable gate 400 then pushes the rope towards and into contact with the cutting assembly 200, resulting in the rope being cut by the cutting assembly 200. Through the connecting lifting action of the lifting rope 700 and the connecting rope 600, the movable gate 400 and the cutting assembly 200 work together, allowing the rope to be precisely cut by the cutting assembly 200. The entire process is time-saving and labor-saving, thus quickly restoring the well's function and reducing economic losses.

[0067] In use, this invention first attaches the lifting rope 700 to the lifting lug 630 on the ground, then hooks the automatic unhooking component 600 to the confluence of the tops of the three columns 300. Next, the rope end passes from bottom to top through the gap between the two reinforcing parts 420 of the movable door 400, and then through the second limiter 1100. One worker holds the rope while another lowers the downhole rope cutter into the wellhead. The lifting rope 700 is then slowly released, lowering the downhole rope cutter into the well, along with its power cord. During the lowering process, the movable door 400 remains open under the tension of the elastic rope 900. Once the downhole rope cutter is at the bottom of the well, the automatic unhooking component 600 is no longer affected by the weight of the downhole rope cutter, thus separating from the confluence of the tops of the three columns 300. Next, the lifting rope 700 is pulled again, causing it to lift the automatic unhooking component 600, which in turn lifts the connecting rope 800. This causes the movable gate 400 to move towards the cutting component 200 under the pull of the connecting rope 800, pushing the rope towards the cutting blade 210 under the push of the protrusion 430 of the movable gate 400. Then, the worker on the ground holds the lifting rope 700 and turns on the power switch. The cutting blade 210 cuts the rope after 5-8 seconds. After cutting, the underground rope cutter and the cut rope are pulled out of the well, completing the operation.

[0068] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A water well downhole rope cutting machine, characterized in that, include: A submersible motor (100) has a drive shaft (110) in the middle of its upper cover (120), and a cutting assembly (200) is provided at the top of the drive shaft (110). The cutting assembly (200) is used to cut ropes. A plurality of columns (300) are provided, and the plurality of columns (300) are arranged in a ring on the upper cover (120). The lower end of the columns (300) is connected to the upper cover (120), and the upper ends of the plurality of columns (300) are connected to each other. A movable door (400) is hinged at its lower end to the upper cover (120). The movable door (400) is used to push the rope closer to the cutting assembly (200). A pulley assembly (500) is provided on one side of the movable door (400). An automatic unhooking assembly (600) is attached to the upper end of the column (300) at its lower end. A lifting rope (700) is connected to the upper end of the automatic unhooking assembly (600). The automatic unhooking assembly (600) is used to drive the submersible motor (100) to move. A connecting rope (800) has one end connected to the upper end of the automatic unhooking assembly (600) and the other end connected to the middle of the side of the movable door (400) facing the cutting assembly (200), and the middle of the connecting rope (800) is threaded through the pulley assembly (500).

2. The wellbore downhole rope cutting machine according to claim 1, characterized in that, The cutting assembly (200) includes: A cutting disc (210) has a mounting hole in its center, and the cutting disc (210) is sleeved on the top end of the drive shaft (110) through the mounting hole; Two clamping plates (220) are provided, and the two clamping plates (220) are provided on the upper and lower surfaces of the cutting plate (210) via a connector (230).

3. The wellbore downhole rope cutting machine according to claim 2, characterized in that, The movable door (400) includes: The lower end of the door (410) is hinged to the upper cover (120); A reinforcing rib (420) is provided in the middle of the door body (410); A protrusion (430) is provided at the top of the door body (410) on the side near the cutting assembly (200); A connecting part (440) is provided in the middle of the reinforcing rib (420) on the side near the cutting assembly (200), and the connecting part (440) is used to connect the connecting rope (800).

4. The wellbore downhole rope cutting machine according to claim 3, characterized in that, The automatic unhooking assembly (600) includes: The hook (610) has its lower end attached to the upper end of the column (300); The connecting seat (620) is rotatably connected to the two side walls of the middle part of the hook body (610); A lifting lug (630) is provided at the top of the connecting seat (620) for connecting the connecting rope (800) and the lifting rope (700).

5. The wellbore downhole rope cutting machine according to claim 4, characterized in that, The hook body (610) has a counterweight (611) and a hook (612), the counterweight (611) and the hook (612) are an integral structure, and the counterweight (611) extends toward the side of the hook (612) that is bent.

6. The wellbore downhole rope cutting machine according to claim 5, characterized in that, The submersible motor (100) is provided with a connecting ring on the lower side wall below the movable door (400).

7. The wellbore downhole rope cutting machine according to claim 6, characterized in that, Also includes: An elastic pull cord (900) has one end connected to the connecting part (440) and the other end connected to the connecting ring.

8. The wellbore downhole rope cutting machine according to claim 7, characterized in that, Also includes: A first limiter (1000) is disposed on a post adjacent to the pulley assembly (500) and located above the pulley assembly (500). The first limiter (1000) is used to limit the connecting rope (800).

9. The wellbore downhole rope cutting machine according to claim 8, characterized in that, Also includes: The second limiter (1100) is disposed on the post (300) adjacent to the movable door (400) and located above the movable door (400). The second limiter (1100) is used to limit the rope.

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