A self-locking portable manual logging cable winch and its usage method

Abstract

The present invention discloses a self-locking portable manual logging cable winch and its usage method. The winch includes slip ring side plates and transmission side plates arranged opposite to each other. The slip ring side plates and the transmission side plates are fixedly connected through side plate support pipes. A winch roller assembly is arranged between the slip ring side plates and the transmission side plates. A conductive slip ring is installed on the outer side of the slip ring side plates, and a transmission assembly is installed on the outer side of the transmission side plates. Compared with a portable electric logging cable winch, the cable winch disclosed by the present invention does not require components such as motors and control systems, nor does it require power drive. Its structure is simpler and more lightweight, and it is more suitable for use in environments lacking power sources and transportation tools.

Description

Technical Field

[0001] The present invention belongs to the field of logging winches, and particularly relates to a self-locking portable manual logging cable winch and its usage method in this field. Background Art

[0002] For the logging cable winch system used in the oil and coal industries, the usual logging depth ranges from several thousand meters to over ten thousand meters, belonging to medium-sized and large-sized vehicle-mounted winches or fixed winches. Such logging cable winches generally have complex power transmission structures, hydraulic devices, motor systems, braking systems, cable laying mechanisms, sensor systems, and electronic control systems.

[0003] Existing portable logging cable winches can be divided into electric types and manual types according to the driving force. Portable electric logging cable winches generally consist of components such as a base, power supply, driving motor, transmission mechanism, winch drum, cable, cable laying mechanism, braking device, and manual adjustment mechanism. They are convenient to use and have high logging efficiency during the logging process, but their structures are more complex than those of portable manual logging cable winches, and their weights generally reach over 50 Kg. Since some exploration work needs to be carried out in the wild with unfavorable geographical locations and poor environments, in many cases, there is a lack of power supply and suitable transportation tools, and it is necessary to manually carry and wind and unwind the logging cable; relatively speaking, the lighter-weight and motor-system-independent portable manual logging cable winch is more suitable for use in such environments.

[0004] The publicly available portable manual logging cable winch, such as the patent "A Logging Winch" of Chongqing Geological Instrument Factory, discloses a dual-purpose logging winch that can be driven by a manual handle or electrically. This winch drives through gears to drive the sprocket, has a simple structure, and can be used as a portable manual logging cable winch when the motor is not installed.

[0005] During the logging process in shallow geophysical exploration fields such as high-precision detection of urban underground spaces, geological exploration of high-speed railway lines, and leakage detection of subway buildings, some logging instruments do not perform continuous logging and need to change the lifting direction or hover in the wellbore. However, the existing portable manual logging cable winches require manual braking; secondly, different from hoisting winches, logging cable winches not only need to have the functions of lifting and hovering the logging instrument, but also need to transmit power signals through the cable. A conductive slip ring needs to be installed at the end of the drum to transmit the power signal to the industrial control host; a quick-lock connector also needs to be provided at the lower end of the cable to enable quick disassembly and assembly with the logging instrument.

[0006] In summary, the existing portable manual logging winches have the following disadvantages: 1. The drum lacks a self-locking function; 2. The lower end of the cable lacks a quick-lock interface; 3. The end of the drum lacks a conductive slip ring. Summary of the Invention

[0007] The technical problem to be solved by the present invention is to provide a portable manual logging cable winch with a quick-lock interface component at the lower end of the cable, a conductive slip ring at the end of the drum, and capable of realizing two-way self-locking of the drum lifting, and its usage method.

[0008] The present invention adopts the following technical solutions:

[0009] A self-locking portable manual logging cable winch, which is improved in that it includes slip ring side plates and transmission side plates arranged opposite to each other. The slip ring side plates and the transmission side plates are fixedly connected by side plate support pipes. A winch roller assembly is arranged between the slip ring side plates and the transmission side plates. A conductive slip ring is installed on the outer side of the slip ring side plates, and a transmission assembly is installed on the outer side of the transmission side plates. The winch roller assembly includes a drum left side plate and a drum right side plate arranged opposite to each other. The drum left side plate and the drum right side plate are fixedly connected by a plurality of drum pull rods. A drum left shaft is fixedly installed on the drum left side plate. One end of the drum left shaft passes through the bearing seat on the slip ring side plate and is fixedly connected to the rotor of the conductive slip ring. A bearing is arranged between the bearing seat and the drum left shaft. The other end of the drum left shaft is fixedly connected to a gland. A drum right shaft is fixedly installed on the drum right side plate. One end of the drum right shaft passes through the bearing seat on the transmission side plate. A bearing is arranged between the bearing seat and the drum right shaft. A large gear is also arranged on the part of the drum right shaft located outside the transmission side plate. The other end of the drum right shaft is fixedly connected to a cable pull ring. The cable is led out from the conductive slip ring, passes through the inside of the drum left shaft, is first locked by the gland, then bypasses the cable pull ring, and finally is wound into a coil between the drum pull rods. The lower end of the cable is installed on a quick-lock joint assembly. The transmission assembly includes a transmission protection cover installed on the transmission side plate. One end of a ratchet shaft passes through the bearing seat on the transmission side plate, and the other end passes through the bearing seat on the transmission protection cover and is fixedly connected to a winch handle. Bearings are arranged between the two bearing seats and the ratchet shaft. A first brake baffle, a first friction plate, a ratchet, a second friction plate, a second brake baffle, a small gear, and a retaining ring are sequentially sleeved on the ratchet shaft. Among them, the first brake baffle is adjacent to the transmission side plate and is fixed on the ratchet shaft. The first friction plate, the ratchet, the second friction plate, and the second brake baffle form a rotating pair with the ratchet shaft. The small gear and the ratchet shaft are connected by a left-handed multi-start thread. The small gear also forms a gear pair with the above-mentioned large gear. The retaining ring is adjacent to the transmission protection cover and is fixed on the ratchet shaft. It also includes a pawl and a tension spring that cooperate with the ratchet.

[0010] Further, the two winch brackets are respectively fixed on the outer sides of the slip ring side plates and the transmission side plates with a side plate support pipe as the axis. Each winch bracket is connected to the slip ring side plates and the transmission side plates respectively through two bracket connecting rods.

[0011] Further, the side plate support pipes and the winch brackets are both made of high-strength stainless steel thin-walled pipe materials.

[0012] Further, each roller pull rod is horizontally arranged and evenly distributed to form a cylinder.

[0013] Further, the left roller shaft is fixed on the left roller side plate by screws and nuts, and the right roller shaft is fixed on the right roller side plate by screws and nuts; the gland head is installed on the left roller shaft by threads, and the cable pull ring is fixed on the right roller shaft by threads; the transmission protection cover is fixed on the transmission side plate by screws.

[0014] Further, the conductive slip ring and the bearing seat are fixed on the slip ring side plate together, and an aviation quick-lock plug is installed outside the conductive slip ring.

[0015] Further, one end of the right roller shaft passing through the transmission side plate also passes through the bearing seat on the transmission protection cover, and the bearing seat is connected to the right roller shaft by a bearing.

[0016] Further, the slip ring side plate, the transmission side plate, the left roller side plate, the right roller side plate, and the roller pull rod are all manufactured by machining high-strength aluminum alloy.

[0017] Further, the quick-lock joint assembly includes a handle, an adapter, a rubber column, a copper sheet, a sealing ring, a housing, a positioning ring, a wire passing sleeve, a small iron ring, a grease injection screw, a compression sleeve, a guide sleeve, a positioning screw, a ten-core plug-in, a quick-lock nut, a guide key, and a cap; one end of the quick-lock joint assembly is a handle, and the adapter and the handle are connected by threads; the rubber column is between the adapter and the handle, and both ends of the rubber column are pressed by copper sheets, and the housing and the adapter are connected by threads, and a sealing ring is installed on the right side of the thread between the housing and the adapter; the cable is inside the housing, passes through the positioning ring and the wire passing sleeve, and a steel cable is arranged at the connection between the lower head of the cable and the quick-lock joint assembly, and the steel cable is welded and buckled on the left side of the small iron ring; the cable signal transmission line passes through the wire passing sleeve and is welded on the welding needle of the ten-core plug-in, the ten-core plug-in is installed in the guide sleeve, the compression sleeve is screwed on the guide sleeve by threads to press the ten-core plug-in; the guide sleeve is installed inside the housing, and the guide sleeve and the housing are fixed by using a positioning screw; the quick-lock nut is installed outside the guide sleeve and can rotate around the guide sleeve; the cap is installed in the quick-lock nut by threads; sealing rings are installed on both the cap and the guide sleeve, and after assembly, the inside of the quick-lock joint assembly is filled with sealing silicone grease through the installation hole of the grease injection screw, and then the grease injection screw is tightened.

[0018] A usage method, applicable to the above cable winch, is improved in that: the logging tool is installed on the quick-lock joint assembly;

[0019] When it is necessary to lower the logging tool during the logging process, the winch handle is rotated counterclockwise to drive the ratchet shaft to rotate counterclockwise. The pinion slides towards the retaining ring and presses against it under the drive of the left-handed multi-start thread, causing the pinion and the ratchet shaft to rotate counterclockwise synchronously. During this process, the ratchet does not rotate with the ratchet shaft, while the pinion drives the large gear to rotate clockwise, and the large gear drives the winch roller assembly to rotate clockwise, thereby lowering the cable and the logging tool;

[0020] After the logging tool is lowered to the predetermined position, stop rotating the winch handle and let go. The gravity of the logging tool pulls the winch roller assembly to rotate clockwise through the cable. The clockwise rotation of the winch roller assembly drives the large gear to rotate clockwise. During this process, the large gear drives the pinion to rotate counterclockwise. The pinion slides towards the second brake baffle and presses against the second brake baffle under the drive of the left-handed multi-start thread, causing the pinion, the second brake baffle, the second friction plate, the ratchet, the first friction plate, and the first brake baffle to be held together, generating a counterclockwise rotation tendency for the ratchet shaft. During this process, the ratchet also generates a counterclockwise rotation tendency along with the ratchet shaft, but the pawl catches the ratchet to prevent the above-mentioned counterclockwise rotation tendency from becoming an actual counterclockwise rotation, thereby stopping the rotation of the winch roller assembly, the large gear, and the pinion, locking the cable winch, and making the logging tool hover in the well;

[0021] When it is necessary to lift the logging tool during the logging process, rotate the winch handle clockwise to drive the ratchet shaft to rotate clockwise. Since the pinion, the second brake baffle, the second friction plate, the ratchet, the first friction plate, and the first brake baffle have been held together when the cable winch is locked, the ratchet shaft drives the ratchet and the pinion to rotate clockwise. The clockwise rotation of the ratchet springs open the pawl, and the pawl is immediately pulled back to its original position by the tension spring after being sprung open. The clockwise rotation of the pinion drives the large gear to rotate counterclockwise, and the large gear drives the winch roller assembly to rotate counterclockwise, winding the cable onto the winch roller assembly to achieve the lifting of the cable and the logging tool.

[0022] The beneficial effects of the present invention are:

[0023] The cable winch disclosed by the present invention, compared with the portable electric logging cable winch, does not require components such as motors and control systems, nor does it require power drive. It has a simpler and more lightweight structure and is more suitable for use in environments lacking power and transportation tools.

[0024] The cable winch disclosed by the present invention realizes the self-locking function during the lifting and lowering process through a simple friction plate brake baffle structure, a large and small gear transmission structure, and a ratchet pawl tension spring structure. Compared with the existing portable manual logging cable winch that requires manual braking during the logging operation process, the logging operation process of the present invention is more convenient and safe.

[0025] The cable winch disclosed by the present invention has a quick-lock joint assembly at the lower end of the cable, which can be quickly docked with the logging tool. A conductive slip ring is designed at the end of the winch roller assembly, and when the winch roller assembly rotates, it does not affect the transmission of logging signals.

[0026] The usage method disclosed by the present invention is simple to operate and easy to master, and can conveniently realize various functions of the cable winch. Description of the Drawings

[0027] Figure 1 is a schematic structural diagram of the cable winch disclosed by the present invention;

[0028] Figure 2 is a schematic cross-sectional view of the winch roller assembly in the cable winch disclosed by the present invention;

[0029] Figure 3 is an enlarged schematic view of the conductive slip ring part in the cable winch disclosed by the present invention;

[0030] Figure 4 is a schematic cross-sectional view of the transmission assembly in the cable winch disclosed by the present invention;

[0031] Figure 5 is Figure 4 a schematic A-A cross-sectional view of

[0032] Figure 6 is a schematic cross-sectional view of the quick-lock joint assembly in the cable winch disclosed by the present invention;

[0033] Figure 7 is a schematic view of the cable winch disclosed by the present invention when the winch support is retracted.

[0034] Reference numerals: 101 - winch roller assembly, 102 - slip ring side plate, 103 - transmission side plate, 104 - side plate support tube, 105 - conductive slip ring, 106 - transmission assembly, 107 - winch handle, 108 - quick-lock joint assembly, 109 - cable, 110 - winch support, 111 - support connecting rod;

[0035] 201 - drum pull rod, 202 - left drum side plate, 203 - right drum side plate, 204 - left drum shaft, 205 - right drum shaft, 206 - gland, 207 - cable pull ring;

[0036] 301 - bearing seat, 302 - aviation quick-lock plug, 303 - bearing, 304 - rotor;

[0037] 401—Large gear, 402—Small gear, 403—Bearing, 404—Bearing seat, 405—Drive protection cover, 406—Ratchet shaft, 407—First brake baffle, 4081—First friction plate, 409—Ratchet, 4082—Second friction plate, 410—Second brake baffle, 411—Circlip, 412—Pawl, 413—Tension spring;

[0038] 501—Handle, 502—Adapter, 503—Copper sheet, 504—Rubber column, 505—Sealing ring, 506—Housing, 507—Positioning ring, 508—Wire sleeve, 509—Small iron ring, 510—Grease injection screw, 511—Compression sleeve, 512—Guide sleeve, 513—Positioning screw, 514—Ten-core plug-in, 515—Quick-lock nut, 516—Cap, 517—Guide key, 518—Steel cable, 519—Cable signal transmission line, 520—Buckle. Specific implementation mode

[0039] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0040] Embodiment 1. This embodiment discloses a self-locking portable manual logging cable winch, which is different from traditional large-scale logging cable winches and is mainly applied to shallow geophysical exploration fields such as high-precision detection of urban underground spaces, geological exploration of high-speed railway lines, and leakage detection of subway buildings. The depth of the exploration well is generally between dozens of meters and one hundred meters.

[0041] As Figure 1 shown, the cable winch includes slip ring side plates 102 and drive side plates 103 arranged opposite to each other. The slip ring side plates and the drive side plates are fixedly connected by side plate support pipes 104. A winch roller assembly 101 is arranged between the slip ring side plates and the drive side plates. A conductive slip ring 105 is installed on the outside of the slip ring side plates, and a drive assembly 106 is installed on the outside of the drive side plates; As Figure 2As shown in the figure, the winch roller assembly includes a drum left side plate 202 and a drum right side plate 203 arranged opposite to each other. The drum left side plate and the drum right side plate are fixedly connected by a plurality of drum tie rods 201. A drum left shaft 204 is fixedly installed on the drum left side plate. One end of the drum left shaft passes through the bearing seat 301 on the slip ring side plate and is fixedly connected to the rotor 304 of the conductive slip ring. A bearing 303 is connected between the bearing seat and the drum left shaft. The other end of the drum left shaft is fixedly connected to a gland 206. A drum right shaft 205 is fixedly installed on the drum right side plate. One end of the drum right shaft passes through the bearing seat 301 on the transmission side plate. A bearing 303 is connected between the bearing seat and the drum right shaft. A large gear 401 is also arranged at the part of the drum right shaft outside the transmission side plate. The other end of the drum right shaft is fixedly connected to a cable pull ring 207. The cable 109 is led out from the conductive slip ring, passes through the inside of the drum left shaft, is first locked by the gland, then bypasses the cable pull ring, and finally is wound into a disk between each drum tie rod. The lower end of the cable is installed on the quick-lock joint assembly 108. When the cable is retracted and released, the drum left shaft and the drum right shaft rotate synchronously in the bearing seats through the bearings, so that the whole winch roller assembly rotates. At the same time, the drum left shaft also drives the rotor of the conductive slip ring to rotate.

[0042] As Figure 4 , as shown in Figure 5, the transmission assembly includes a transmission protective cover 405 installed on the transmission side plate. One end of a ratchet shaft 406 passes through the bearing seat 404 on the transmission side plate, and the other end passes through the bearing seat 404 on the transmission protective cover and is fixedly connected to a winch handle 107. Bearings 403 are connected between the two bearing seats 404 and the ratchet shaft. A first brake baffle 407, a first friction plate 4081, a ratchet 409, a second friction plate 4082, a second brake baffle 410, a small gear 402, and a retaining ring 411 are sequentially sleeved on the ratchet shaft. The first brake baffle is adjacent to the transmission side plate and is fixed on the ratchet shaft. The first friction plate, the ratchet, the second friction plate, and the second brake baffle form a rotating pair with the ratchet shaft. A left-handed multi-start thread connection is adopted between the small gear and the ratchet shaft to increase the lead of the thread and eliminate the self-locking property of the thread, so that the small gear can slide along the ratchet shaft between the second brake baffle and the retaining ring. The small gear also forms a gear pair with the above-mentioned large gear. The retaining ring is adjacent to the transmission protective cover and is fixed on the ratchet shaft. It also includes a pawl 412 and a tension spring 413 that cooperate with the ratchet. When the cable is retracted and released, shaking the winch handle can drive the ratchet shaft and the small gear to rotate, and the small gear can drive the large gear to rotate, thereby driving the whole winch roller assembly to rotate.

[0043] The two winch brackets 110 are respectively fixed on the outside of the slip ring side plate and the transmission side plate with an axis of a side plate support pipe. Each winch bracket is connected to the slip ring side plate and the transmission side plate through two bracket connecting rods 111 respectively. As Figure 7As shown, the screws fixing the four support connecting rods to the slip ring side plate and the drive side plate can be loosened, so that the two winch supports can rotate upward with their respective side plate support tubes as axes. After rotating to the top, the winch supports can be used as handles during the handling process.

[0044] Both the side plate support tubes and the winch supports are made of high-strength stainless steel thin-walled tubes.

[0045] There are five roller tie rods in this embodiment, and each roller tie rod is horizontally arranged and evenly distributed in a cylindrical shape.

[0046] The left roller shaft is fixed to the left side plate of the roller by screws and nuts, and the right roller shaft is fixed to the right side plate of the roller by screws and nuts; the gland is installed on the left roller shaft by threading, and the cable pull ring is fixed to the right roller shaft by threading; the drive protection cover is fixed to the drive side plate by screws.

[0047] As Figure 3 shown, the conductive slip ring and the bearing seat are fixed to the slip ring side plate together, and an aviation quick-lock plug 302 is installed on the outside of the conductive slip ring.

[0048] One end of the right roller shaft 205 passes through the drive side plate 103 and also passes through the bearing seat 404 on the drive protection cover 405, and the bearing seat is connected to the right roller shaft by a bearing 403.

[0049] To reduce the weight, the slip ring side plate, the drive side plate, the left side plate of the roller, the right side plate of the roller, and the roller tie rods are all machined from high-strength aluminum alloy.

[0050] As Figure 6As shown in the figure, the quick-lock connector assembly includes a handle 501, an adapter 502, a rubber column 504, a copper sheet 503, a sealing ring 505, a housing 506, a positioning ring 507, a wire sleeve 508, a small iron ring 509, a grease injection screw 510, a compression sleeve 511, a guide sleeve 512, a positioning screw 513, a ten-core plug 514, a quick-lock nut 515, a guide key 517 and a cap 516; one end of the quick-lock connector assembly is a handle, and the adapter and the handle are connected by threads; the rubber column is between the adapter and the handle, and both ends of the rubber column are pressed by the copper sheet to lock the cable. The housing and the adapter are connected by threads, and a sealing ring is installed on the right side of the threads between the housing and the adapter; the cable 109 is inside the housing, passing through the positioning ring and the wire sleeve. The cable is a customized cable, and a steel cable 518 is provided at the connection between the lower head of the cable and the quick-lock connector assembly to withstand greater tension. The steel cable is welded and buckled 520 on the left side of the small iron ring; the cable signal transmission line 519 passes through the wire sleeve and is welded to the welding pins of the ten-core plug. The ten-core plug is installed in the guide sleeve, and the compression sleeve is screwed onto the guide sleeve by threads to press the ten-core plug; the guide sleeve is installed inside the housing, and the guide sleeve and the housing are fixed using the positioning screw; the quick-lock nut is installed outside the guide sleeve and can rotate around the guide sleeve; the cap is installed in the quick-lock nut by threads; sealing rings are installed on both the cap and the guide sleeve to prevent water from entering the quick-lock connector assembly. After the assembly is completed, the inside of the quick-lock connector assembly is filled with sealing grease through the installation hole of the grease injection screw, and then the grease injection screw is tightened.

[0051] When using the quick-lock connector assembly, use a wrench to remove the cap, align the logging tool marking groove with the guide key at the front end of the guide sleeve, and then tighten the quick-lock nut to achieve quick docking with the logging tool; when the logging tool needs to be removed, just rotate the quick-lock nut in the reverse direction to withdraw the logging tool from the quick-lock nut.

[0052] This embodiment also discloses a usage method, applicable to the above-mentioned cable winch. After installing the logging tool on the quick-lock connector assembly:

[0053] When it is necessary to lower the logging tool during the logging process, shake the winch handle counterclockwise to drive the ratchet shaft to rotate counterclockwise (the clockwise and counterclockwise directions described in this embodiment are both with reference to Figure 5 This is only an exemplary illustration for explaining the principle of the technical solution of this application. Equivalent solutions obtained by those skilled in the art after changing the rotation direction under the guidance of this principle should also be within the protection scope of this application), the small gear slides towards the retaining ring and presses against the retaining ring under the drive of the left-handed multi-start thread, so that the small gear and the ratchet shaft rotate synchronously counterclockwise. During this process, the ratchet does not rotate with the ratchet shaft, while the small gear drives the large gear to rotate clockwise, and the large gear drives the winch roller assembly to rotate clockwise, thereby lowering the cable and the logging tool;

[0054] After the logging tool is lowered to the predetermined position, stop turning the winch handle and let go. The gravity of the logging tool pulls the winch roller assembly to rotate clockwise through the cable. The clockwise rotation of the winch roller assembly drives the large gear to rotate clockwise. During this process, the large gear drives the small gear to rotate counterclockwise. Driven by the left-handed multi-start thread, the small gear slides towards the second brake baffle and presses against the second brake baffle. The second brake baffle then presses the second friction plate, ratchet, and first friction plate towards the first brake baffle. Under the action of pressure, the frictional force between the second brake baffle, second friction plate, ratchet, first friction plate, and first brake baffle gradually increases until the small gear, second brake baffle, second friction plate, ratchet, first friction plate, and first brake baffle are held together, causing the ratchet shaft to have a tendency to rotate counterclockwise. During this process, the ratchet also has a tendency to rotate counterclockwise along with the ratchet shaft, but the pawl catches the ratchet to prevent the above-mentioned counterclockwise rotation tendency from becoming an actual counterclockwise rotation, thereby stopping the rotation of the winch roller assembly, large gear, and small gear, locking the cable winch, and suspending the logging tool in the well.

[0055] When it is necessary to lift the logging tool during logging, turn the winch handle clockwise to drive the ratchet shaft to rotate clockwise. Since the small gear, second brake baffle, second friction plate, ratchet, first friction plate, and first brake baffle have been held together when the cable winch is locked, the ratchet shaft drives the ratchet and small gear to rotate clockwise. The clockwise rotation of the ratchet ejects the pawl, and the pawl is immediately pulled back to its original position by the tension spring after being ejected (this process is repeated continuously during lifting. In this way, as soon as the winch handle is stopped turning and let go, the winch roller assembly will stop rotating, locking the cable winch to ensure operational safety). The clockwise rotation of the small gear drives the large gear to rotate counterclockwise, and the large gear drives the winch roller assembly to rotate counterclockwise, winding the cable onto the winch roller assembly to achieve the lifting of the cable and the logging tool.

Claims

1. A self-locking portable manual logging cable winch, characterized in that: It includes a slip ring side plate and a transmission side plate arranged opposite to each other. The slip ring side plate and the transmission side plate are fixedly connected by a side plate support pipe. A winch roller assembly is arranged between the slip ring side plate and the transmission side plate. A conductive slip ring is installed on the outer side of the slip ring side plate, and a transmission assembly is installed on the outer side of the transmission side plate. The winch roller assembly includes a drum left side plate and a drum right side plate arranged opposite to each other. The drum left side plate and the drum right side plate are fixedly connected by a plurality of drum tie rods. A drum left shaft is fixedly installed on the drum left side plate. One end of the drum left shaft passes through the bearing seat on the slip ring side plate and is fixedly connected to the rotor of the conductive slip ring. A bearing is arranged between the bearing seat and the drum left shaft. The other end of the drum left shaft is fixedly connected to a gland nut. A drum right shaft is fixedly installed on the drum right side plate. One end of the drum right shaft passes through the bearing seat on the transmission side plate. A bearing is arranged between the bearing seat and the drum right shaft. A large gear is also arranged on the part of the drum right shaft located outside the transmission side plate. The other end of the drum right shaft is fixedly connected to a cable pull ring. The cable is led out from the conductive slip ring, passes through the inside of the drum left shaft, is first locked by the gland nut, then bypasses the cable pull ring, and finally is wound into a coil between the drum tie rods. The lower end of the cable is installed on a quick-lock connector assembly. The transmission assembly includes a transmission protection cover installed on the transmission side plate. One end of a ratchet shaft passes through the bearing seat on the transmission side plate, and the other end passes through the bearing seat on the transmission protection cover and is fixedly connected to a winch handle. Bearings are arranged between the two bearing seats and the ratchet shaft. A first brake baffle, a first friction plate, a ratchet, a second friction plate, a second brake baffle, a small gear, and a retaining ring are sequentially sleeved on the ratchet shaft. The first brake baffle is adjacent to the transmission side plate and is fixed on the ratchet shaft. The first friction plate, the ratchet, the second friction plate, and the second brake baffle form a rotating pair with the ratchet shaft. The small gear and the ratchet shaft are connected by a left-handed multi-start thread. The small gear also forms a gear pair with the above-mentioned large gear. The retaining ring is adjacent to the transmission protection cover and is fixed on the ratchet shaft. It also includes a pawl and a tension spring that cooperate with the ratchet. The conductive slip ring and the bearing seat are fixed on the slip ring side plate together, and an aviation quick-lock plug is installed on the outer side of the conductive slip ring. The quick-lock connector assembly includes a handle, a swivel joint, a rubber column, a copper sheet, a sealing ring, a housing, a positioning ring, a wire passing sleeve, a small iron ring, a grease injection screw, a compression sleeve, a guide sleeve, a positioning screw, a ten-core plug, a quick-lock nut, a guide key, and a cap.

2. The self-locking portable manual well logging cable winch according to claim 1, wherein: Taking a side plate support pipe as the axis, two winch brackets are respectively fixed on the outer sides of the slip ring side plate and the transmission side plate. Each winch bracket is connected to the slip ring side plate and the transmission side plate respectively through two bracket connecting rods.

3. The self-locking portable manual logging cable winch according to claim 2, wherein: The side plate support pipe and the winch bracket are both made of high-strength stainless steel thin-wall pipes.

4. The self-locking portable manual logging cable winch according to claim 1, characterized in that: Each drum tie rod is horizontally arranged and evenly distributed in a cylindrical shape.

5. The self-locking portable manual logging cable winch according to claim 1, characterized in that: The drum left shaft is fixed on the drum left side plate by screws and nuts. The drum right shaft is fixed on the drum right side plate by screws and nuts. The gland nut is installed on the drum left shaft by threads. The cable pull ring is fixed on the drum right shaft by threads. The transmission protection cover is fixed on the transmission side plate by screws.

6. The self-locking portable manual logging cable winch according to claim 1, wherein: One end of the right drum shaft passes through the drive side plate and also through the bearing seat on the drive protection cover, and the bearing seat is connected to the right drum shaft by a bearing.

7. The self-locking portable manual logging cable winch according to claim 1, wherein: The slip ring side plate, drive side plate, left drum side plate, right drum side plate, and drum tie rod are all machined from high-strength aluminum alloy.

8. The self-locking portable manual well logging cable winch according to claim 1, wherein: One end of the quick-lock connector assembly is a handle, and the adapter and the handle are connected by threads; the rubber column is between the adapter and the handle, and both ends of the rubber column are pressed by copper sheets. The housing and the adapter are connected by threads, and a sealing ring is installed on the right side of the threads between the housing and the adapter; the cable is inside the housing, passes through the positioning ring and the wire passing sleeve, and a steel cable is set at the connection between the lower end of the cable and the quick-lock connector assembly. The steel cable is welded and buckled on the left side of the small iron ring; the cable signal transmission line passes through the wire passing sleeve and is welded to the welding needle of the ten-core plug. The ten-core plug is installed in the guide sleeve, and the compression sleeve is screwed onto the guide sleeve by threads to press the ten-core plug; the guide sleeve is installed inside the housing, and the guide sleeve and the housing are fixed using positioning screws; the quick-lock nut sleeve is installed outside the guide sleeve and can rotate around the guide sleeve; the cap is installed in the quick-lock nut sleeve by threads; sealing rings are installed on both the cap and the guide sleeve. After assembly, the inside of the quick-lock connector assembly is filled with sealing silicone grease through the installation hole of the grease injection screw, and then the grease injection screw is tightened.

9. A method of use, applicable to the cable winch according to claim 1, characterized in that: Install the logging tool on the quick-lock connector assembly; When the logging tool needs to be lowered during logging, shake the winch handle counterclockwise to drive the ratchet shaft to rotate counterclockwise. The small gear slides towards the retaining ring and presses against the retaining ring under the drive of the left-handed multi-start thread, causing the small gear and the ratchet shaft to rotate counterclockwise synchronously. During this process, the ratchet does not rotate with the ratchet shaft, and the small gear drives the large gear to rotate clockwise. The large gear drives the winch roller assembly to rotate clockwise, thereby lowering the cable and the logging tool; After the logging tool is lowered to the predetermined position, stop shaking the winch handle and let go. The gravity of the logging tool pulls the winch roller assembly to rotate clockwise through the cable. The winch roller assembly rotating clockwise drives the large gear to rotate clockwise. During this process, the large gear drives the small gear to rotate counterclockwise. The small gear slides towards the second brake baffle and presses against the second brake baffle under the drive of the left-handed multi-start thread, causing the small gear, the second brake baffle, the second friction plate, the ratchet, the first friction plate, and the first brake baffle to be held together, causing the ratchet shaft to have a counterclockwise rotation tendency. During this process, the ratchet also has a counterclockwise rotation tendency with the ratchet shaft, but the pawl catches the ratchet to prevent the above-mentioned counterclockwise rotation tendency from becoming an actual counterclockwise rotation, thereby stopping the rotation of the winch roller assembly, the large gear, and the small gear, locking the cable winch, and making the logging tool hover in the well; When it is necessary to lift the logging tool during logging, turn the winch handle clockwise to drive the ratchet shaft to rotate clockwise. Since the pinion gear, the second brake baffle, the second friction plate, the ratchet, the first friction plate, and the first brake baffle are already held together when the cable winch is self-locked, the ratchet shaft drives the ratchet and the pinion gear to rotate clockwise. The ratchet rotates clockwise to spring open the ratchet pawl. After the ratchet pawl is sprung open, it is immediately pulled back to its original position by the tension spring. The pinion gear rotates clockwise to drive the large gear to rotate counterclockwise. The large gear drives the winch roller assembly to rotate counterclockwise, winding the cable onto the winch roller assembly to achieve the lifting of the cable and the logging tool.

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