Electric capstan with multiple safety protection

Abstract

The invention discloses an electric capstan with multiple safety protections.The electric capstan comprises a capstan assembly, the capstan assembly comprises a cable body, two first protection assemblies are arranged at the bottom of the capstan assembly, and a second protection assembly is arranged between the outer surfaces of the two first protection assemblies; and two first protection assemblies. According to the electric capstan with the multiple safety protections, when a laser scanner detects that a certain position of the cable body is damaged, the upper portion of the damaged position is clamped and fixed through the four clamping blocks located on the upper portion, and then the four clamping blocks located on the lower portion are moved to the position below the damaged position to clamp and fix the cable body; multiple protection of the cable body in the electric capstan is achieved, and the problem that in the prior art, when a heavy object is lifted by a cable in the electric capstan, a certain section of the cable is damaged, the cable is broken, and the heavy object falls off is solved.

Description

Technical Field

[0001] The invention relates to the technical field of electric winches, in particular to an electric winch with multiple safety protections. Background Art

[0002] An electric winch is a winch device that is driven by electricity. It is mainly used for pulling, dragging and lifting objects. The power of the electric winch is provided by a power supply. The power supply drives the motor to work, and the motor transmits power to the mechanical transmission device. The mechanical transmission device is a transmission mechanism composed of planetary gears, which in turn drives the winch drum to rotate to wind the cable. The pulling, dragging and lifting operations are achieved by retracting and releasing the cable. When the motor stops working but the cable is loaded, the braking system will automatically lock the drum to prevent the cable from loosening and slipping.

[0003] However, the existing electric winches are often used for lifting heavy objects. In daily life, the cables provided by the electric winches are mainly used to lift and lower heavy objects. However, the existing cables will be pulled by the heavy objects during long-term use, and friction will be generated between the strands of fibers and the metal wires inside the cables due to relative movement. When the cables are subjected to external gravity, the internal strands will squeeze and rub against each other, which will cause internal damage to the cables in the long run and affect the overall performance of the cables. As a result, it is easy for a certain section of the cables to be damaged in the process of lifting heavy objects. After the cables are damaged, their carrying capacity will decrease. When they cannot bear the weight of the heavy objects, the heavy objects will suddenly fall, causing certain property losses. When the existing electric winches use the cables to lift heavy objects, most of them do not have the function of protecting and detecting the damage of the cables, which makes it impossible for the electric winches to detect and protect the damage in time when pulling the heavy objects, resulting in the cable breaking and the falling of the heavy objects, which in turn causes property losses.

[0004] Therefore, we propose an electric winch with multiple safety protections to solve the above-mentioned problems. Summary of the invention

[0005] The purpose of the present invention is to provide an electric winch with multiple safety protections to solve the problem that a certain section of the cable in the electric winch proposed in the above background technology is easily damaged during the process of lifting heavy objects, which may easily lead to the cable breaking and the heavy objects falling.

[0006] To achieve the above object, the present invention provides the following technical solution: An electric winch with multiple safety protections, including a winch assembly. The winch assembly includes a cable body. Two first protection components are provided at the bottom of the winch assembly. A second protection component is provided between the outer surfaces of the two first protection components. The two first protection components each include four clamping blocks. Every four adjacent clamping blocks out of the eight are in a group. Each group of clamping blocks clamps and fixes the upper end of the damaged part in the cable body by moving towards the center of the circle. A connecting rod is rotatably connected to the outer surface of each clamping block through a limit screw. By rotating each group of connecting rods, each group of clamping blocks can be driven to scale along the same center of the circle respectively. For the second protection component, the second protection component includes two ropes and a laser scanner. The two ropes are used to drive a group of clamping blocks arranged below the second protection component to move downward to clamp and fix the lower part of the damaged part of the cable body. The laser scanner is used to detect whether the outer surface of the cable body is damaged. An annular spray head is provided below the laser scanner. The annular spray head is used to lubricate and protect the surface of the cable body.

[0007] Preferably, the two first protection components further include two limit discs. The inner bottom surfaces of the two limit discs are fixedly installed with driving motors through screws. The output ends of the two driving motors are fixedly connected with output shafts. The tops of the two output shafts are both fixed with driving gears. The outer surfaces of the two driving gears are both meshed with driven gears.

[0008] Preferably, the bottoms of the two driven gears are respectively rotatably connected to the inner bottom surfaces of the two limit discs. The tops of the two driven gears are both fixed with turntables. Every four adjacent connecting rods out of the eight are in a group. The tops of the two turntables are respectively rotatably connected to the interiors of two groups of connecting rods through limit screws near the four corners.

[0009] Preferably, telescopic sliding rods are slidably connected to the inner bottom surfaces of the two limit discs near the two side edges. Every two opposite clamping blocks out of the eight are in a group. The interiors of two groups of clamping blocks are respectively slidably connected to the interiors of the two telescopic sliding rods. Two limit tubes are fixed between the opposite inner walls of the two limit discs.

[0010] Preferably, every two opposite limit tubes out of the four limit tubes are in a group. The outer surfaces of the two groups of limit tubes are respectively rotatably connected to the interiors of the other two groups of clamping blocks. Friction pads are provided on the inner walls of the eight clamping blocks. Every four adjacent clamping blocks out of the eight are in a group. The outer surfaces of each group of clamping blocks are respectively slidably connected to the interiors of the two limit discs.

[0011] Preferably, the second protection component further includes a mounting frame, two limiting frames are fixed on the outer surface of the mounting frame, a servo motor is fixedly installed on the outer surface of one of the limiting frames through screws, a winding roller is rotatably connected between the opposite inner walls of the two limiting frames, and both ends of the two winding rollers respectively penetrate to the outer parts of the two limiting frames in opposite directions, and one end of one of the winding rollers is fixedly connected to the output end of the servo motor.

[0012] Preferably, the outer surfaces of the two ropes are respectively wound on the outer surfaces of the two winding rollers, one ends of the two ropes are respectively movably connected to the outer surface of the limiting disc through connecting buckles, driving rollers are fixed on the outer surfaces of the two winding rollers, a belt is arranged between the outer surfaces of the two driving rollers, an auxiliary ring is fixedly embedded on the inner wall of the mounting frame, the annular spray head is arranged on the top of the auxiliary ring, the outer surface of the annular spray head is fixedly connected to the inner wall of the mounting frame, and a fixed leakage hole ring is fixedly installed inside the annular spray head.

[0013] Preferably, a stepping motor is fixedly installed on the top of the annular spray head through screws, a connecting shaft is fixed to the output end of the stepping motor, both ends of the connecting shaft respectively penetrate to the outer parts of the annular spray head in opposite directions, a first gear is fixedly sleeved on the outer surface of the connecting shaft near the bottom end, a second gear is meshed with the outer surface of the first gear, a rotating leakage hole ring is fixedly embedded inside the second gear, the inner wall of the rotating leakage hole ring is in contact with the outer surface of the fixed leakage hole ring, both ends of the rotating leakage hole ring are rotatably connected to the opposite inner walls of the annular spray head, and a measuring tube is fixed on the top of the annular spray head.

[0014] Preferably, the outer surface of the measuring tube is fixedly connected to the inner wall of the mounting frame, the laser scanner is arranged on the inner wall of the measuring tube, a sealing tank is fixedly installed on the inner bottom surface of the mounting frame through screws, a delivery pump is fixedly installed on the inner bottom surface of the mounting frame through screws, an input end of the delivery pump is fixedly communicated with a delivery pipe, one end of the delivery pipe fixedly penetrates to the inside of the sealing tank, an output end of the delivery pump is fixedly communicated with a communicating pipe, and one end of the communicating pipe fixedly penetrates to the inside of the annular spray head.

[0015] Preferably, the winch assembly further includes a support frame, a motor is arranged on the outer surface of the support frame, a driving shaft is rotatably connected between the opposite inner walls of the support frame, a winch body is fixedly sleeved on the outer surface of the driving shaft, one end of the winch body is fixedly connected to the output end of the motor, a cable body is wound on the outer surface of the winch body, a connecting hook is arranged at the bottom end of the cable body, bearing plates are fixed on the bottom of the support frame near both side edges, hydraulic rods are arranged at the bottoms of the two bearing plates, and the bottoms of the two hydraulic rods are fixedly connected to the top of the upper limiting disc.

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

[0017] 1. When the laser scanner detects a breakage at a certain place on the cable body, the upper four clamping blocks are used to clamp and fix the upper part of the breakage, and then the lower four clamping blocks are moved to the lower part of the breakage to clamp and fix the cable body, realizing multiple protections for the cable body in the electric winch, and solving the problem in the prior art that a certain section of the cable in the electric winch is prone to breakage during the process of lifting heavy objects, which may easily lead to the cable breaking and the heavy object falling.

[0018] 2. When it is necessary to use the electric winch to lift a heavy object, first move the cable body downward, and lubricate and protect the surface of the cable body by spraying lubricating oil through the rotating leak hole ring and the fixed leak hole ring inside the annular spray head, that is, realize the protection of the cable body before connecting the electric winch and the heavy object, and prevent the situation that the strength of the cable body is reduced due to friction.

[0019] 3. In order to further increase the convenience of the movement of the two ropes, the friction rolling between the outer surface of the cable body and the multiple ball bearings in the auxiliary ring can further improve the smoothness of the movement of the second protection component and the first protection component located below. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is the front perspective view of an electric winch with multiple safety protections according to the present invention;

[0021] Figure 2 is the perspective view of the bearing plate part of an electric winch with multiple safety protections according to the present invention;

[0022] Figure 3 is the perspective view of the winch component part of an electric winch with multiple safety protections according to the present invention;

[0023] Figure 4 is the perspective view of the clamping block part of an electric winch with multiple safety protections according to the present invention;

[0024] Figure 5 is the partially sectional perspective view of the limit disk part of an electric winch with multiple safety protections according to the present invention;

[0025] Figure 6 is the perspective view of the first protection component part of an electric winch with multiple safety protections according to the present invention;

[0026] Figure 7 is the perspective view of the mounting frame part of an electric winch with multiple safety protections according to the present invention;

[0027] Figure 8Partial cross-sectional perspective view of the mounting frame of an electric winch with multiple safety protections according to the present invention;

[0028] Figure 9 Partial perspective view of the second protection component of an electric winch with multiple safety protections according to the present invention;

[0029] Figure 10 Partial cross-sectional perspective view of the measuring tube of an electric winch with multiple safety protections according to the present invention.

[0030] In the figure:

[0031] 1. Winch assembly; 101. Support frame; 102. Motor; 103. Drive shaft; 104. Winch body; 105. Cable body; 106. Connecting hook; 2. First protection component; 201. Friction pad; 202. Limiting tube; 203. Limiting disk; 204. Driving motor; 205. Output shaft; 206. Driving gear; 207. Driven gear; 208. Turntable; 209. Telescopic slide bar; 210. Connecting rod; 211. Clamping block; 3. Second protection component; 301. Mounting frame; 302. Limiting frame; 303. Servo motor; 304. Reel; 305. Rope; 306. Driving roller; 307. Belt; 308. Auxiliary ring; 309. Annular spray head; 310. Fixed leakage hole ring; 311. Stepper motor; 312. Connecting shaft; 313. First gear; 314. Second gear; 315. Rotating leakage hole ring; 316. Measuring tube; 317. Laser scanner; 318. Sealed tank; 319. Delivery pump; 320. Delivery pipe; 321. Connecting pipe; 4. Bearing plate; 5. Hydraulic rod. Detailed implementation manners

[0032] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0033] Please refer to Figures 1-10, the present invention provides a technical solution: The second protection component 3 further includes a mounting frame 301. Two limiting frames 302 are fixed on the outer surface of the mounting frame 301. A servo motor 303 is fixedly installed on the outer surface of one of the limiting frames 302 by screws. A winding roller 304 is rotatably connected between the opposite inner walls of the two limiting frames 302. The two ends of the two winding rollers 304 respectively penetrate through the outer parts of the two limiting frames 302 in opposite directions. One end of one of the winding rollers 304 is fixedly connected to the output end of the servo motor 303. The outer surfaces of the two ropes 305 are respectively wound around the outer surfaces of the two winding rollers 304. One end of each of the two ropes 305 is movably connected to the outer surface of the limiting disc 203 through a connecting buckle. Driving rollers 306 are fixed on the outer surfaces of the two winding rollers 304. A belt 307 is arranged between the outer surfaces of the two driving rollers 306. An auxiliary ring 308 is fixedly embedded in the inner wall of the mounting frame 301. The annular spray head 309 is arranged on the top of the auxiliary ring 308. The outer surface of the annular spray head 309 is fixedly connected to the inner wall of the mounting frame 301. A fixed leak hole ring 310 is fixedly installed inside the annular spray head 309. A stepping motor 311 is fixedly installed on the top of the annular spray head 309 by screws. The output end of the stepping motor 311 is fixed with a connecting shaft 312. The two ends of the connecting shaft 312 respectively penetrate through the outer parts of the annular spray head 309 in opposite directions. A first gear 313 is fixedly sleeved on the outer surface of the connecting shaft 312 near the bottom end. A second gear 314 is meshed with the outer surface of the first gear 313. A rotating leak hole ring 315 is fixedly embedded inside the second gear 314. The inner wall of the rotating leak hole ring 315 is in contact with the outer surface of the fixed leak hole ring 310. The two ends of the rotating leak hole ring 315 are respectively rotatably connected to the opposite inner walls of the annular spray head 309. A measuring tube 316 is fixed on the top of the annular spray head 309. The outer surface of the measuring tube 316 is fixedly connected to the inner wall of the mounting frame 301. A laser scanner 317 is arranged inside the measuring tube 316. A sealing tank 318 is fixedly installed on the inner bottom surface of the mounting frame 301 by screws. A delivery pump 319 is fixedly installed on the inner bottom surface of the mounting frame 301 by screws. The input end of the delivery pump 319 is fixedly communicated with a delivery pipe 320. One end of the delivery pipe 320 fixedly penetrates through the inside of the sealing tank 318. The output end of the delivery pump 319 is fixedly communicated with a communicating pipe 321. One end of the communicating pipe 321 fixedly penetrates through the inside of the annular spray head 309. The winch assembly 1 further includes a support frame 101. A motor 102 is arranged on the outer surface of the support frame 101. A driving shaft 103 is rotatably connected between the opposite inner walls of the support frame 101. A winch body 104 is fixedly sleeved on the outer surface of the driving shaft 103. One end of the winch body 104 is fixedly connected to the output end of the motor 102. A cable body 105 is wound around the outer surface of the winch body 104. A connecting hook 106 is arranged at the bottom end of the cable body 105. Bearing plates 4 are fixed at the bottom of the support frame 101 near the two side edges. Hydraulic rods 5 are arranged at the bottoms of the two bearing plates 4.The bottom ends of both hydraulic rods 5 are fixedly connected to the top of the upper limiting disc 203.

[0034] In this embodiment, when it is necessary to use the electric winch to lift a heavy object, first start the motor 102 to drive the drive shaft 103 to rotate, and then drive the winch body 104 to rotate, so as to lower the cable body 105 wound on the surface of the winch body 104 and drive the connecting hook 106 to move downward. Among them, as Figure 1 shown, the bottom end of the cable body 105 respectively passes through the centers of the two limiting discs 203 and the center of the mounting frame 301. During the downward movement of the cable body 105, start the delivery pump 319 to drive the delivery pipe 320 to extract lubricating oil into the interior of the sealed tank 318. The lubricating oil enters the interior of the connecting pipe 321 along the delivery pipe 320 and finally enters the interior of the annular spray head 309. At this time, when the lubricating oil in the annular spray head 309 fills the interior of the annular spray head 309, the stepping motor 311 can be started to drive the connecting shaft 312 to rotate, and then drive the first gear 313 to rotate, thereby driving the second gear 314 to rotate. By the rotation of the second gear 314, the rotating leaky hole ring 315 is driven to rotate until the multiple small holes in the rotating leaky hole ring 315 are completely aligned with the small holes in the fixed leaky hole ring 310 as Figure 10 shown, so that the lubricating oil in the annular spray head 309 can be sprayed out along the small holes in the fixed leaky hole ring 310 and the rotating leaky hole ring 315 respectively to lubricate and protect the surface of the cable body 105. The lubricating protection can form an oil film between the steel wires and strands in the cable body 105, reduce the friction coefficient between them, reduce internal wear, avoid wire breakage caused by long-term friction, and extend the service life of the cable body 105. In addition, since the cable body 105 will contact and generate friction with the internal components in the electric winch during the winding and unwinding process, good lubrication can make the cable body 105 slide smoothly on the surfaces of these components, reduce external wear, prevent damage such as excessive wear and grooves on the surface of the cable body 105, and at the same time reduce the wear of the related components of the winch to ensure the normal operation of the winch. The lubricated cable body 105 continues to move downward until the connecting hook 106 is lowered to the outer surface of the heavy object and connected to the connecting piece in the heavy object, that is, the protection of the cable body 105 before the connection between the electric winch and the heavy object is realized, preventing the strength of the cable body 105 from being reduced due to friction.

[0035] As Figures 1-10As shown in the figure, an electric winch with multiple safety protections includes a winch assembly 1. The winch assembly 1 includes a cable body 105. Two first protection components 2 are provided at the bottom of the winch assembly 1. A second protection component 3 is provided between the outer surfaces of the two first protection components 2. The two first protection components 2 each include four clamping blocks 211. Every four adjacent ones of the eight clamping blocks 211 form a group. Each group of clamping blocks 211 clamps and fixes the upper end of the damaged part in the cable body 105 by moving towards the center of the circle. A connecting rod 210 is rotatably connected to the outer surface of each clamping block 211 through a limit screw. By rotating each group of connecting rods 210, each group of clamping blocks 211 can be driven to scale along the same center of the circle. The second protection component 3 includes two ropes 305 and a laser scanner 317. The two ropes 305 are used to drive a group of clamping blocks 211 provided below the second protection component 3 to move downward to clamp and fix the lower part of the damaged part of the cable body 105. The laser scanner 317 is used to detect whether the outer surface of the cable body 105 is damaged. An annular spray head 309 is provided below the laser scanner 317. The annular spray head 309 is used to lubricate and protect the surface of the cable body 105. The two first protection components 2 further include two limit disks 203. A driving motor 204 is fixedly installed on the inner bottom surface of each of the two limit disks 203 through screws. The output ends of the two driving motors 204 are fixedly connected with output shafts 205. Active gears 206 are fixed to the tops of the two output shafts 205. Driven gears 207 are meshed with the outer surfaces of the two active gears 206. The bottoms of the two driven gears 207 are respectively rotatably connected to the inner bottom surfaces of the two limit disks 203. Turntables 208 are fixed to the tops of the two driven gears 207. Every four adjacent ones of the eight connecting rods 210 form a group. The tops of the two turntables 208 are respectively rotatably connected to the interiors of two groups of connecting rods 210 near the four corners through limit screws. Telescopic sliding rods 209 are slidably connected to the inner bottom surfaces of the two limit disks 203 near both side edges. Every two opposite ones of the eight clamping blocks 211 form a group. The interiors of two groups of clamping blocks 211 are respectively slidably connected to the interiors of the two telescopic sliding rods 209. Two limit tubes 202 are fixed between the opposite inner walls of the two limit disks 203. Every two opposite ones of the four limit tubes 202 form a group. The outer surfaces of the two groups of limit tubes 202 are respectively rotatably connected to the interiors of the other two groups of clamping blocks 211. Friction pads 201 are provided on the inner walls of the eight clamping blocks 211. Every four adjacent ones of the eight clamping blocks 211 form a group. The outer surfaces of each group of clamping blocks 211 are respectively slidably connected to the interiors of the two limit disks 203.

[0036] In this embodiment, in order to prevent the cable body 105 from being pulled and the internal strands from being squeezed and rubbed against each other during the lifting of heavy objects, which may cause partial fracture of some of its strands, first start the two hydraulic rods 5 to make them extend, driving the limiting disc 203 to move downward, and then driving the two first protection components 2 and the second protection component 3 to move downward along the cable body 105. When the two hydraulic rods 5 drive the upper limiting disc 203 to drop to the lowest position, the laser scanner 317 can be started to detect the surface and inside of the cable body 105. Among them, the laser scanner 317 emits a laser beam and measures the time required for it to be emitted and received to determine the distance, so as to obtain the contour information of the surface of the cable body 105. The scanner will perform high-precision scanning on the surface of the cable body 105 to generate three-dimensional point cloud data of the surface of the cable body 105. By comparing the point cloud data obtained in real time with the model and normal contour data of the cable body 105 in a sound state established in advance, abnormal changes on the surface of the cable body 105 can be found. When there is a breakage at a certain place on the cable body 105, then start the motor 102 again to drive the drive shaft 103 to rotate in the reverse direction. Among them, the motor 102 can drive the drive shaft 103 to rotate in reverse and forward, which is an existing mature technology and will not be introduced in detail here. By the rotation of the drive shaft 103, the cable body 105 is wound up, driving the connecting hook 106 to move upward. During the upward movement of the cable body 105, it is scanned and detected by the laser scanner 317. When the laser scanner 317 detects that a partial strand breakage occurs at a certain place on the cable body 105, a signal can be transmitted to the external control system. The external control system first shuts down the motor 102 to stop lifting the heavy object. Among them, the motor 102 has a self-locking function. Then start the upper drive motor 204 to drive the output shaft 205 to rotate, then drive the driving gear 206 to rotate, and then drive the driven gear 207 to rotate, making the turntable 208 rotate, and then drive the four connecting rods 210 to rotate, so that the four clamping blocks 211 move toward the center position of the cable body 105 respectively until the four clamping blocks 211 completely clamp and fix the outer surface of this part of the cable body 105 tightly. In addition, the friction pad 201 is made of rubber material with large friction performance, which can further increase the friction force between the four clamping blocks 211 and the cable body 105, thus further improving the fixing effect on the cable body 105. In addition, combined with Figure 1 and Figure 10As shown, the laser scanner 317 is disposed below the four clamping blocks 211 located in the upper part. Since the laser scanner 317 immediately stops the motor 102 when it detects a breakage in the cable body 105, the four clamping blocks 211 located above clamp and fix the intact position above the broken part of the cable body 105. While the four clamping blocks 211 in the upper part clamp the cable body 105, the servo motor 303 is started to drive the winding roller 304 connected thereto to rotate, thereby releasing the rope 305 on its surface outward. At the same time, when the winding roller 304 rotates, it drives the driving roller 306 connected thereto to rotate, and then drives the belt 307 on its surface to rotate, so that another driving roller 306 disposed inside the belt 307 rotates, and then drives another winding roller 304 to rotate, thereby releasing the wound rope 305 on its surface downward. In this way, the two ropes 305 can drive the second protection component 3 and the first protection component 2 located below to move downward along the cable body 105 under the action of their own gravity. Among them, in order to further increase the convenience of the movement of the two ropes 305, through the friction rolling between the outer surface of the cable body 105 and a plurality of balls in the auxiliary ring 308 as shown in Figure 10 shown, the smoothness of the movement of the second protection component 3 and the first protection component 2 located below can be further improved. While the second protection component 3 is moving, the laser scanner 317 simultaneously detects whether there is a breakage on the surface of the cable body 105. When the other broken end of the cable body 105 is detected, a signal can be transmitted to the external control system, and the servo motor 303 is turned off through the external control system. At the same time, the driving motor 204 located below is started to drive the corresponding four clamping blocks 211 to move towards the outer surface of the cable body 105 respectively until the outer surface of the cable body 105 is clamped and fixed. Among them, as shown in Figure 10 shown, since the laser scanner 317 is disposed on the top of the four clamping blocks 211 located below, the four clamping blocks 211 clamp the intact part below the broken end at the bottom of the cable body 105. Through the clamping and fixing of the two ends of the broken part of the cable body 105 by the two first protection components 2 and the pulling of the two ropes 305, the protection of the two ends of the broken part in the cable body 105 is realized, and the situation that the cable body 105 breaks due to the sharp reduction of its performance caused by the surface breakage is prevented. Then, the motor 102 can be started again to drive the heavy object to move downward to a safe area in contact with the ground. Through the action of the two first protection components 2 and the second protection component 3, multiple protections of the cable body 105 in the electric winch are realized, and the problem that a certain section of the cable in the electric winch is prone to breakage and the heavy object drops during the process of lifting the heavy object in the prior art is solved.

[0037] Usage method and working principle of this device: When using an electric winch to lift a heavy object, first start the motor 102 to drive the drive shaft 103 to rotate, and then drive the winch body 104 to rotate, so as to lower the cable body 105 wound on the surface of the winch body 104 and drive the connecting hook 106 to move downward. During the downward movement of the cable body 105, start the delivery pump 319 to drive the delivery pipe 320 to extract lubricating oil into the interior of the sealed tank 318. The lubricating oil enters the interior of the connecting pipe 321 along the delivery pipe 320 and finally enters the interior of the annular spray head 309. At this time, when the lubricating oil in the annular spray head 309 fills the interior of the annular spray head 309, the stepper motor 311 can be started to drive the connecting shaft 312 to rotate, and then drive the first gear 313 to rotate, thereby driving the second gear 314 to rotate. The rotation of the second gear 314 drives the rotating leak hole ring 315 to rotate until the multiple small holes in the rotating leak hole ring 315 are completely coincident with the small holes in the fixed leak hole ring 310 to such as Figure 10As shown, the lubricating oil in the annular spray head 309 can be sprayed out along the small holes in the fixed leak hole ring 310 and the rotating leak hole ring 315 respectively to lubricate and protect the surface of the cable body 105. The lubricated cable body 105 continues to move downward until the connecting hook 106 is lowered to the outer surface of the heavy object and connected to the connecting piece in the heavy object, that is, the protection of the cable body 105 before the connection between the electric winch and the heavy object is realized, preventing the situation that the strength of the cable body 105 is reduced due to friction. In order to prevent the cable body 105 from being pulled and the internal strands being squeezed and rubbed against each other during the lifting of the heavy object, resulting in partial fracture of some strands, first start the two hydraulic rods 5 to make them extend, drive the limit disk 203 to move downward, and then drive the two first protection components 2 and the second protection component 3 to move downward along the cable body 105. When the two hydraulic rods 5 drive the upper limit disk 203 to drop to the lowest position, the laser scanner 317 can be started to detect the surface and inside of the cable body 105. Then, the motor 102 can be started again to drive the drive shaft 103 to rotate in the reverse direction. Through the rotation of the drive shaft 103, the cable body 105 is wound up, thereby driving the connecting hook 106 to move upward. During the upward movement of the cable body 105, it is scanned and detected by the laser scanner 317. When the laser scanner 317 detects that a partial strand break occurs at a certain place on the cable body 105, a signal can be transmitted to the external control system. Through the external control system, first, the motor 102 is turned off to stop lifting the heavy object. Among them, the motor 102 has a self-locking function. Then, start the upper drive motor 204 to drive its output shaft 205 to rotate, and then drive the driving gear 206 to rotate, thereby driving the driven gear 207 to rotate, making the turntable 208 rotate, and then driving the four connecting rods 210 to rotate, so that the four clamping blocks 211 move toward the center position of the cable body 105 respectively until the four clamping blocks 211 completely clamp and fix the outer surface of this part of the cable body 105 tightly. In addition, the friction pad 201 is made of rubber material with large friction performance, which can further increase the friction force between the four clamping blocks 211 and the cable body 105, thereby further improving the fixing effect on the cable body 105. While the four upper clamping blocks 211 clamp the cable body 105, start the servo motor 303 to drive the winding roller 304 connected to it to rotate, thereby releasing the rope 305 on its surface outward. At the same time, when the winding roller 304 rotates, it drives the driving roller 306 connected to it to rotate, and then drives the belt 307 on its surface to rotate, so that another driving roller 306 arranged inside the belt 307 rotates, and then drives another winding roller 304 to rotate, thereby releasing the wound rope 305 on its surface downward.That is, the two ropes 305 can drive the second protection component 3 and the first protection component 2 located below to move downward along the cable body 105 under the action of their own gravity. To further improve the convenience of the movement of the two ropes 305, the friction rolling between the outer surface of the cable body 105 and the multiple ball bearings in the auxiliary ring 308 can further improve the smoothness of the movement of the second protection component 3 and the first protection component 2 located below. While the second protection component 3 is moving, the laser scanner 317 simultaneously detects whether there is damage on the surface of the cable body 105. When the damaged end of the cable body 105 is detected, a signal can be transmitted to an external control system, and the servo motor 303 is turned off through the external control system. At the same time, the drive motor 204 located below is started, so that the four clamping blocks 211 corresponding to it move towards the outer surface of the cable body 105 respectively until the outer surface of the cable body 105 is clamped and fixed. Through the clamping and fixing of the two ends of the damaged part of the cable body 105 by the two first protection components 2 and the pulling of the two ropes 305, the situation that the cable body 105 breaks due to the sharp reduction of its performance caused by surface damage is prevented. Then, the motor 102 can be started again to drive the heavy object to move downward to a safe area in contact with the ground.,

[0038] The wiring diagrams of the motor 102, the drive motor 204, the servo motor 303, the stepper motor 311, the laser scanner 317, the delivery pump 319 and the hydraulic rod 5 in the present invention belong to the common knowledge in the art. Their working principles are already known technologies, and their models are selected according to actual use. Therefore, the control methods and wiring arrangements of the motor 102, the drive motor 204, the servo motor 303, the stepper motor 311, the laser scanner 317, the delivery pump 319 and the hydraulic rod 5 will not be explained in detail.,

[0039] Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.,

Claims

1. An electric winch with multiple safety protections, comprising a winch assembly (1), and the winch assembly (1) includes a cable body (105), characterized in that: Two first protection components (2) are arranged at the bottom of the winch assembly (1), and a second protection component (3) is arranged between the outer surfaces of the two first protection components (2). Two first protection components (2), each of the two first protection components (2) includes four clamping blocks (211). Every four adjacent ones of the eight clamping blocks (211) form a group. Each group of clamping blocks (211) clamps and fixes the upper end of the damaged part in the cable body (105) by moving towards the center of the circle. A connecting rod (210) is rotatably connected to the outer surface of each clamping block (211) through a limit screw. By rotating each group of connecting rods (210), each group of clamping blocks (211) can be driven to scale along the same center of the circle respectively. Second protection component (3), the second protection component (3) includes two ropes (305) and a laser scanner (317). The two ropes (305) are used to drive a group of clamping blocks (211) arranged below the second protection component (3) to move downward to clamp and fix the lower part of the damaged part of the cable body (105). The laser scanner (317) is used to detect whether the outer surface of the cable body (105) is damaged. An annular spray head (309) is arranged below the laser scanner (317), and the annular spray head (309) is used to lubricate and protect the surface of the cable body (105).

2. The electric winch with multiple safety protections according to claim 1, wherein: The two first protection components (2) further include two limit disks (203). Driving motors (204) are fixedly installed on the inner bottom surfaces of the two limit disks (203) through screws. Output shafts (205) are fixedly connected to the output ends of the two driving motors (204). Active gears (206) are fixed to the tops of the two output shafts (205). Driven gears (207) are meshed and connected to the outer surfaces of the two active gears (206).

3. The electric winch with multiple safety protections according to claim 2, wherein: The bottoms of the two driven gears (207) are respectively rotatably connected to the inner bottom surfaces of the two limit disks (203). Turntables (208) are fixed to the tops of the two driven gears (207). Every four adjacent ones of the eight connecting rods (210) form a group. The tops of the two turntables (208) are respectively rotatably connected to the interiors of two groups of connecting rods (210) through limit screws near the four corners.

4. The electric winch with multiple safety protections according to claim 3, characterized in that: Two telescopic sliding rods (209) are slidably connected to the inner bottom surfaces of the two limit disks (203) near the two side edges. Every two opposite ones of the eight clamping blocks (211) form a group. The interiors of two groups of clamping blocks (211) are respectively slidably connected to the interiors of the two telescopic sliding rods (209). Two limit tubes (202) are fixed between the opposite inner walls of the two limit disks (203).

5. The electric winch with multiple safety protections according to claim 4, characterized in that: Every two of the four limiting tubes (202) are grouped together. The outer surfaces of the two groups of limiting tubes (202) are respectively rotatably connected to the interiors of the other two groups of clamping blocks (211). Friction pads (201) are provided on the inner walls of the eight clamping blocks (211). Every four adjacent clamping blocks (211) are grouped together. The outer surfaces of each group of clamping blocks (211) are respectively slidably connected to the interiors of two limiting disks (203).

6. The electric winch with multiple safety protections according to claim 5, characterized in that: The second protection component (3) further includes a mounting frame (301). Two limiting frames (302) are fixed on the outer surface of the mounting frame (301). A servo motor (303) is fixedly installed on the outer surface of one of the limiting frames (302) by screws. A winding roller (304) is rotatably connected between the opposite inner walls of the two limiting frames (302). The two ends of the two winding rollers (304) respectively extend outwards through the two limiting frames (302) to the opposite sides. One end of one of the winding rollers (304) is fixedly connected to the output end of the servo motor (303).

7. The electric winch with multiple safety protections according to claim 6, characterized in that: The outer surfaces of the two ropes (305) are respectively wound around the outer surfaces of the two winding rollers (304). One end of each of the two ropes (305) is movably connected to the outer surface of the limiting disk (203) through a connecting buckle. Driving rollers (306) are fixed on the outer surfaces of the two winding rollers (304). A belt (307) is provided between the outer surfaces of the two driving rollers (306). An auxiliary ring (308) is fixedly embedded in the inner wall of the mounting frame (301). The annular spray head (309) is arranged on the top of the auxiliary ring (308). The outer surface of the annular spray head (309) is fixedly connected to the inner wall of the mounting frame (301). A fixed leakage hole ring (310) is fixedly installed inside the annular spray head (309).

8. The electric winch with multiple safety protections according to claim 7, wherein: A stepping motor (311) is fixedly installed on the top of the annular spray head (309) by screws. A connecting shaft (312) is fixed to the output end of the stepping motor (311). The two ends of the connecting shaft (312) respectively extend outwards through the opposite sides of the annular spray head (309). A first gear (313) is fixedly sleeved on the outer surface of the connecting shaft (312) near the bottom end. A second gear (314) is meshed with the outer surface of the first gear (313). A rotating leakage hole ring (315) is fixedly embedded in the second gear (314). The inner wall of the rotating leakage hole ring (315) is in contact with the outer surface of the fixed leakage hole ring (310). The two ends of the rotating leakage hole ring (315) are respectively rotatably connected to the opposite inner walls of the annular spray head (309). A measuring tube (316) is fixed on the top of the annular spray head (309).

9. The electric winch with multiple safety protections according to claim 8, characterized in that: The outer surface of the measuring tube (316) is fixedly connected to the inner wall of the mounting frame (301). The laser scanner (317) is arranged on the inner wall of the measuring tube (316). A sealing tank (318) is fixedly installed on the inner bottom surface of the mounting frame (301) by screws. A delivery pump (319) is fixedly installed on the inner bottom surface of the mounting frame (301) by screws. The input end of the delivery pump (319) is fixedly communicated with a delivery pipe (320). One end of the delivery pipe (320) fixedly penetrates into the interior of the sealing tank (318). The output end of the delivery pump (319) is fixedly communicated with a connecting pipe (321). One end of the connecting pipe (321) fixedly penetrates into the interior of the annular spray head (309).

10. The electric winch with multiple safety protections according to claim 9, wherein: The winch assembly (1) further includes a support frame (101). A motor (102) is arranged on the outer surface of the support frame (101). A drive shaft (103) is rotatably connected between the opposite inner walls of the support frame (101). A winch body (104) is fixedly sleeved on the outer surface of the drive shaft (103). One end of the winch body (104) is fixedly connected to the output end of the motor (102). A cable body (105) is wound around the outer surface of the winch body (104). A connecting hook (106) is arranged at the bottom end of the cable body (105). Load-bearing plates (4) are fixedly arranged at both sides of the bottom of the support frame (101) near the edges. Hydraulic rods (5) are arranged at the bottoms of the two load-bearing plates (4). The bottom ends of the two hydraulic rods (5) are fixedly connected to the top of the upper limiting disc (203).

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