Traction lifting device with steel wire rope damage detection function
By using live conductors and electrical verification devices in the traction lifting device to detect the broken strands of the wire rope, the problem of difficult to detect broken strands of the wire rope is solved, timely maintenance and replacement are achieved, and safety and detection accuracy are improved.
Patent Information
- Application Number
- CN202421038117.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-13
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2034-05-13
AI Technical Summary
The wire rope in the traction lifting device may break the strand after long-term use, resulting in a decrease in strength, rope jamming and safety hazards, and it is difficult to detect and repair in a timely manner.
Design a traction lifting device with the function of wire rope damage detection, and use an insulated connection between the live conductor and the casing to detect whether the wire rope has broken strands through the gap between the conductor and the wire rope. Use the electric test device to detect whether the casing is energized. Discover the broken strands of the wire rope in a timely manner and use the protective switch to prevent continued use.
It effectively avoids the rope and breaking caused by the broken wire rope, reduces the difficulty of maintenance, improves the safety of use, provides timely maintenance and replacement time, and significantly improves the detection accuracy and replacement efficiency.
Smart Images
Figure CN222181518U_ABST
Abstract
Description
Technical Field
[0001] The utility model discloses a traction and lifting device with a wire rope damage detection function, belonging to the technical field of traction and lifting devices. Background Art
[0002] The traction hoist is a small lifting device that integrates an electric motor, a friction drum and a rope storage drum. In order to increase the load-bearing capacity of the traction hoist, a steel wire rope is usually used as the traction rope. After long-term use of the traction hoist, the steel wire rope may break, causing burrs on the surface of the steel wire rope. When the steel wire rope breaks, the strength of the steel wire rope will decrease. If it continues to be used, it may become stuck, making the maintenance of the traction hoist more difficult. The steel wire rope may even break, causing the heavy object to fall, posing a major safety hazard. Utility Model Content
[0003] The purpose of the utility model is to solve the problem that it is difficult to detect the broken strands of the wire rope in time. To this end, a traction and lifting device with a wire rope damage detection function is provided, and the conductor can detect whether the wire rope is broken in time.
[0004] To solve the above technical problems, the present invention adopts the following technical solutions:
[0005] A traction and lifting device with a wire rope breakage detection function includes a casing, a rope storage drum for storing the wire rope is provided in the casing, the casing is connected to a charged conductor, and the conductor is insulated from the casing, the wire rope has a tensioning section for maintaining a tensioned state, the conductor is close to the tensioning section and has a gap between the wire rope and the conductor, the wire rope generates burrs and contacts the conductor, and then conducts electricity to the casing to make the casing charged, and an electrical testing device is provided on the casing for detecting whether the casing is charged.
[0006] The beneficial effects of adopting the utility model are:
[0007] There is a gap between the conductor and the wire rope in the utility model. When the wire rope is not broken, the wire rope and the conductor will not contact each other, and the conductor is insulated from the casing. Therefore, when the wire rope is not broken, the casing is not charged. However, when the wire rope is broken, burrs will appear on the surface of the wire rope. When the wire rope passes through the conductor, the burrs will come into contact with the conductor, thereby charging the wire rope. The casing is electrically connected to the conductor through the wire rope, so that the casing is charged. When the electrical detection device detects that the casing is charged, it indicates that the wire rope has burrs. The utility model can and The broken strands of the wire rope can be detected in time, so that the user can repair and replace the wire rope in time, and sufficient time for repair and replacement is provided to the user, which can effectively avoid the rope jamming caused by the broken strands of the wire rope, significantly reduce the difficulty of repairing and replacing the wire rope, and also prevent the wire rope from breaking due to broken strands, which helps to improve the safety of the traction and lifting device. In addition, the wire rope has a tensioning section, and the wire rope at the tensioning section is kept in a tensioned state, which can effectively reduce the shaking amplitude of the wire rope, thereby avoiding the wire rope from contacting the conductor due to shaking, which helps to improve the detection accuracy of the conductor.
[0008] Preferably, the traction and lifting device is provided with a fixed guide wheel for guiding the wire rope to enter or leave the rope storage drum, and the tensioning section includes a first tensioning section, which is located on a side of the fixed guide wheel away from the rope storage drum.
[0009] Preferably, the conductor includes a connection end positioned on a fixed guide wheel and a first detection end for detecting the wire rope. The first detection end is provided with a through hole for the wire rope to pass through, and the diameter of the through hole is larger than the diameter of the wire rope. Adopting the aforementioned technical solution, the through hole can allow the wire rope to pass through normally, while also preventing direct contact between the wire rope and the first detection end, thereby improving the detection accuracy of the conductor. In addition, the wire rope passes through the through hole, so that the first detection end forms a loop around the wire rope, which can increase the detection range of the first detection end, increase the probability of burrs contacting the first detection end, and further improve the detection accuracy of the conductor.
[0010] Preferably, the first detection end is provided with a notch communicating with the through hole, wherein the width of the notch is greater than the diameter of the wire rope. With the aforementioned technical solution, during replacement of the wire rope, the wire rope can be directly detached from the through hole of the first detection end through the notch, without the need to disassemble the conductor and the wire rope, making wire rope replacement more convenient and quick, thereby improving wire rope replacement efficiency.
[0011] Preferably, the traction and lifting device further includes a friction roller, the tensioning section includes a second tensioning section wound around the friction roller, and the conductor is fixed to a side of the casing close to the friction roller.
[0012] Preferably, the housing is detachably connected to a fixing base, to which the conductor is mounted. The end of the conductor proximal to the friction roller serves as a second detection end, which extends axially along the friction roller. The fixing base is provided with a pressing member and a reset member. The pressing member presses against the wire rope to maintain tension, and the reset member acts on the pressing member to cause the pressing member to move toward the wire rope. By adopting the aforementioned technical solution, the second detection end extends axially along the friction roller, thereby increasing the detection range of the second detection end and significantly increasing the probability of the second detection end contacting burrs, enabling the conductor to more promptly detect the presence of burrs on the wire rope. The pressing member can squeeze the wire rope against the friction roller and maintain tension on the friction roller, thereby reducing the vibration amplitude of the friction roller and preventing the wire rope from accidentally contacting the conductor due to vibration.
[0013] Preferably, the clamping member includes a pressure wheel, which is rotatably connected to a rotating shaft, and both ends of the rotating shaft are provided with mounting holes for bolts to pass through. The bolts and the fixing seat cooperate to install the pressure wheel, and the reset member is a spring and is sleeved on the bolt, and the two ends of the spring respectively abut against the rotating shaft and the fixing seat.
[0014] Preferably, the clamping member includes a pressing block, a conductor is fixed to one end of the pressing block close to the friction roller, an end of the pressing block close to the fixed seat is provided with an axial hole for a pin to pass through, the pressing block is hinged to the fixed seat through the pin, the reset member is a torsion spring and is sleeved on the pin, and the two ends of the torsion spring respectively abut against the pressing block and the fixed seat.
[0015] Preferably, the electrical detection device is electrically connected to a protection switch, and when the electrical detection device detects that the housing is charged, the protection switch controls the traction and lifting device to stop running. With the above technical solution, when the conductor detects that a burr appears on the wire rope, the electrical detection device detects that the housing is charged and sends a signal to the protection switch, causing the protection switch to control the traction and lifting device to stop running. This can effectively prevent the wire rope from continuing to lift heavy objects, reduce the possibility of the wire rope getting stuck or breaking, reduce the difficulty of repairing the wire rope, and improve the safety of the traction and lifting device. In addition, by stopping the traction and lifting device through the protection switch, the burr on the wire rope can be directly stopped at the conductor, allowing the user to directly observe the condition of the wire rope without having to inspect the entire wire rope, which can significantly improve the inspection efficiency of the wire rope.
[0016] Preferably, the traction hoist is provided with an electrical unlocking device for releasing the restriction of the protective switch. With the above technical solution, when the protective switch shuts down the traction hoist, the electrical unlocking device allows the traction hoist to resume operation, and the wire rope can still lower the load to the ground, allowing the wire rope to enter a maintenance state.
[0017] Other features and advantages of the present invention will be disclosed in detail in the following specific embodiments and drawings. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] The present invention will be further described below with reference to the accompanying drawings:
[0019] Figure 1 This is a schematic diagram of the structure of a traction and lifting device with a wire rope damage detection function in this utility model. Figure 1 ;
[0020] Figure 2 for Figure 1 A partial enlarged view of part A;
[0021] Figure 3 This is a schematic diagram of the structure of a traction and lifting device with a wire rope damage detection function in this utility model. Figure 2 ;
[0022] Figure 4 for Figure 3 A partial enlarged view of part B;
[0023] Figure 5 This is a structural diagram of the second conductor and the friction roller in a traction and lifting device with a wire rope breakage detection function according to the present invention;
[0024] Figure 6 This is a schematic structural diagram of the second conductor in a traction and lifting device with a wire rope breakage detection function according to the present invention;
[0025] Figure 7 This is a schematic diagram of the structure of the first conductor in a traction and lifting device with a wire rope breakage detection function according to the present invention;
[0026] Figure 8 This is a schematic structural diagram of the second conductor and the friction roller in the second embodiment of the present utility model;
[0027] Figure 9 This is a structural diagram of the first conductor and the rope storage drum in the third embodiment of the present utility model;
[0028] Figure 10 for Figure 9 A partial enlarged view of part C.
[0029] Figure numerals: 1 casing, 11 rope storage drum, 12 friction drum, 13 fixed guide wheel, 14 through hole, 15 pressure wheel, 151 rotating shaft, 1511 connecting block, 16 bolt, 17 spring, 18 pressure block, 181 connecting part, 1811 shaft hole, 21 first conductor, 211 connecting end, 212 first detection end, 213 through hole, 214 notch, 22 second conductor, 221 second detection end, 223 fixing seat, 3 wire rope, 4 slide rail, 41 slide groove, 42 slider, 421 guide hole. DETAILED DESCRIPTION
[0030] The following is an explanation and description of the technical solutions of the embodiments of the present invention in conjunction with the drawings of the embodiments of the present invention, but the following embodiments are only preferred embodiments of the present invention and are not exhaustive. Based on the embodiments in the embodiments, other embodiments obtained by those skilled in the art without creative work are all within the scope of protection of the present invention.
[0031] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "clockwise", "counterclockwise" and the like to indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.
[0032] Furthermore, 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 the technical features being referenced. Thus, a feature identified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless expressly limited otherwise.
[0033] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.
[0034] Example 1:
[0035] like Figures 1 to 7As shown, this embodiment shows a traction and lifting device with a wire rope breakage detection function. The traction and lifting device is an electric hoist, including a housing 1. The housing 1 is provided with a friction drum 12 for driving the retraction and extension of the wire rope 3 and a rope storage drum 11 for storing the wire rope 3. The housing 1 is connected to a charged conductor, and the conductor is insulated from the housing 1. The wire rope 3 has a tensioning section that maintains a tensioned state. The conductor is adjacent to the tensioning section and has a gap between it and the wire rope 3. The wire rope 3 generates burrs and contacts the conductor, causing the housing 1 to become charged. The housing 1 is provided with an electrical detection device for detecting whether the housing 1 is charged. Of course, it is understandable that in other embodiments, the traction and lifting device can also be an electric winch.
[0036] In this embodiment, there is a gap between the conductor and the steel wire rope 3. When the steel wire rope 3 is not broken, the steel wire rope 3 and the conductor will not contact each other, and the conductor is insulated from the housing 1. Therefore, when the steel wire rope 3 is not broken, the housing 1 is not charged. When the steel wire rope 3 is broken, burrs will appear on the surface of the steel wire rope 3. When the steel wire rope 3 passes through the conductor, the burrs will come into contact with the conductor, thereby charging the steel wire rope 3. The housing 1 is electrically connected to the conductor through the steel wire rope 3, so that the housing 1 is charged. When the electrical detection device detects that the housing 1 is charged, it indicates that the steel wire rope 3 has burrs. This embodiment can achieve this through the cooperation of the conductor and the electrical detection device. It can detect the broken strands of the wire rope 3 in time, so that the user can repair and replace the wire rope 3 in time, and provide the user with sufficient repair and replacement time, which can effectively avoid the rope jamming caused by the broken strands of the wire rope 3, significantly reduce the difficulty of repairing and replacing the wire rope 3, and also prevent the wire rope 3 from breaking due to the broken strands, which helps to improve the safety of the traction and lifting device; in addition, the wire rope 3 has a tensioning section, and the wire rope 3 at the tensioning section is kept in a tensioned state, which can effectively reduce the shaking amplitude of the wire rope 3, thereby avoiding the wire rope 3 from contacting the conductor due to shaking, which helps to improve the detection accuracy of the conductor.
[0037] The traction and lifting device in this embodiment is provided with a rope seat and a fixed guide wheel 13 for guiding the wire rope 3 to enter or leave the rope storage drum 11. The wire rope 3 is wound several times in the wheel groove of the friction drum 12, thereby ensuring that there is sufficient friction between the friction drum 12 and the wire rope 3. The friction drum 12 rotates and drives the wire rope 3 to move up and down through the friction force. When lifting heavy objects, the wire rope 3 output by the friction drum 12 passes through the through hole 14 of the casing 1 and enters the fixed guide wheel 13. The fixed guide wheel 13 guides The steel wire rope 3 enters the rope arrangement seat, and the rope arrangement seat moves along the axial direction of the rope storage drum 11 as the rope storage drum 11 rotates, so that the steel wire rope 3 can be wound in the rope storage drum 11 at a vertical angle. When the heavy object is lowered, under the action of the friction drum 12, the steel wire rope 3 is pulled out under the guidance of the rope arrangement seat and the fixed guide wheel 13. The conductor includes a first conductor 21 and a second conductor 22, and the tensioning section includes a first tensioning section and a second tensioning section, wherein the first tensioning section is located between the fixed guide wheel 13 and the through hole 14. The second tensioning section is located on the side of the friction drum 12 close to the housing 1, the first conductor 21 is fixedly mounted on the fixed guide wheel 13, and the second conductor 22 is fixed on the side of the housing 1 close to the friction drum 12. It should be noted that when the wire rope 3 is in the first tensioning section, the wire rope 3 is located between the rope storage drum 11 and the friction drum 12, and in order to enable the wire rope 3 to be stored in the rope storage drum 11 or pulled out from the rope storage drum 11, the wire rope 3 is always in a tensioned state in the first tensioning section to avoid the wire rope 3 from being pulled out of the rope storage drum 11. The wire rope 3 shakes to prevent the first conductor 21 from accidentally touching due to the shaking of the wire rope 3; in addition, when the wire rope 3 is in the second tensioning section, the wire rope 3 is embedded in the wheel groove of the friction roller 12, and the wheel groove can limit the wire rope 3. At the same time, in order to drive the wire rope 3, the friction roller 12 and the wire rope 3 are wrapped more tightly, which can generate greater friction. Therefore, the wire rope 3 in the second tensioning section is also not easy to shake, ensuring that the second conductor 22 is not easy to accidentally touch the wire rope 3.
[0038] It should be noted that the friction roller 12 described in this embodiment includes a main roller and a sub-roller, and the ends of the main roller and the sub-roller are provided with teeth. A main motor is provided in the casing 1, and the output end of the main motor is connected to a reduction mechanism. A transmission gear is provided at the end of the reduction mechanism. The transmission gear is located between the main roller and the sub-roller, and the transmission gear is engaged with the teeth of the main roller and the sub-roller at the same time. In addition, the main roller is closer to the casing 1 than the sub-roller, so the second tensioning section is located on the side of the main roller close to the casing 1; of course, it can be understood that in other embodiments, the friction roller 12 can also be a single friction roller. In addition, the traction and lifting device described in this embodiment also includes a control system, which is connected to a power supply. The power supply is electrically connected to the first conductor 21 and the second conductor 22 through wires. The power supply obtains electrical energy from the control system and transmits it to the first conductor 21 and the second conductor 22 through wires, so that the first conductor 21 and the second conductor 22 are charged. When burrs appear on the wire rope 3 and contact the first conductor 21 or the second conductor 22, the wire rope 3 is also charged. Since the wire rope 3, the rope storage drum 11, the friction drum 12 and the casing 1 are all conductors, the wire rope 3 is connected to the casing 1 through the rope storage drum 11 or the friction drum 12. Therefore, when the wire rope 3 is charged, the entire casing 1 is charged. Therefore, when the burrs on the surface of the wire rope 3 contact the first conductor 21 or the second conductor 22, the electrical detection device can detect that the casing 1 is charged. To avoid electric shock to users, the voltage provided by the power supply described in this embodiment is a safe voltage, that is, less than 36V.
[0039] like Figure 1 and Figure 2 As shown, in this embodiment, the first conductor 21 includes an insulating plate, a connecting end 211 and a first detection end 212, the fixed guide wheel 13 includes a mounting frame fixedly connected to the casing and a roller rotatably connected to the mounting frame, the peripheral side of the roller is provided with a rope groove matching the wire rope 3, the wire rope 3 is embedded in the rope groove and moves along the roller, wherein the insulating plate is detachably connected to the mounting frame, and a mounting portion for installing the connecting end 211 is provided on the insulating plate, and the connecting end 211 is detachably connected to the insulating plate, thereby reducing the difficulty of replacing the first conductor 21. Users can replace first conductors 21 of different specifications according to different diameters of the wire rope 3 and usage requirements, which helps to improve the scope of application.
[0040] like Figure 7As shown, in this embodiment, the first detection end 212 is provided with a through hole 213 for the steel wire rope 3 to pass through, the diameter of the through hole 213 is larger than the diameter of the steel wire rope 3, the first detection end 212 is provided with a notch 214 connected to the through hole 213, the width of the notch 214 is larger than the diameter of the steel wire rope 3, the through hole 213 can allow the steel wire rope 3 to pass through normally, and at the same time can also avoid direct contact between the steel wire rope 3 and the first detection end 212, which can improve the detection accuracy of the first conductor 21; in addition, the steel wire rope 3 passes through the through hole 213 , so that the first detection end 212 forms a circle around the wire rope 3, which can increase the detection range of the first detection end 212, increase the probability of the burr contacting the first detection end 212, and further improve the detection accuracy of the first conductor 21; secondly, during the replacement of the wire rope 3, the wire rope 3 can be directly detached from the through hole 213 of the first detection end 212 from the notch 214, without the need to disassemble the first conductor 21 and the wire rope 3, making the replacement of the wire rope 3 more convenient and quick, and helping to improve the replacement efficiency of the wire rope 3.
[0041] like Figures 3 to 6 As shown, in this embodiment, a fixing seat 223 is provided on the side of the shell close to the friction roller 12, and the second conductor 22 is fixed to the fixing seat 223. The end of the second conductor 22 close to the friction roller 12 is the second detection end 221. The second detection end 221 extends along the axial direction of the friction roller 12, which can increase the detection range of the second detection end 221 and significantly increase the probability of the second detection end 221 contacting the burr, so that the second conductor 22 can detect whether the wire rope 3 has burrs more promptly; a pressing member and a reset member are provided on the fixing seat 223, and the pressing member includes a pressure wheel 15, The pressure wheel 15 is rotatably connected to a rotating shaft 151, and connecting blocks 1511 are provided at both ends of the rotating shaft 151. The connecting blocks 1511 are provided with mounting holes for the bolts 16 to pass through. The bolts 16 pass through the mounting holes and are threadedly connected to the fixing seat 223, thereby realizing the installation of the pressure wheel 15. The reset member is a spring 17 and is sleeved on the bolt 16. The two ends of the spring 17 respectively press against the rotating shaft 151 and the fixing seat 223. The clamping member presses against the wire rope 3 to keep the wire rope 3 taut. The reset member acts on the clamping member and makes the clamping member have a movement tendency to move toward the wire rope 3. The second conductor 22 is located on the upper side of the pressure wheel 15.
[0042] During the operation of the traction and lifting device, the friction drum 12 rotates and drives the wire rope 3 to rise and fall. When the wire rope 3 passes through the pressure wheel 15, the pressure wheel 15 squeezes the wire rope 3, so that the wire rope 3 is tightly attached to the wheel groove and the wire rope 3 is kept in a tensioned state, thereby reducing the shaking amplitude of the friction drum 12, and preventing the wire rope 3 from shaking and accidentally touching the conductor; in addition, when the wire rope 3 passes through the pressure wheel 15, the pressure wheel 15 rotates around the rotating shaft 151 as the wire rope 3 moves, so that the space between the wire rope 3 and the pressure wheel 15 is large. Rolling friction is generated, which reduces the possibility of the wire rope 3 and the pressure wheel 15 being damaged due to friction, and helps to increase the service life of the wire rope 3 and the pressure wheel 15; secondly, after replacing the wire rope 3 with a different diameter, when the diameter of the wire rope 3 becomes smaller, the spring 17 extends and acts on the connecting block 1511, pushing the pressure wheel 15 toward the friction roller 12, so that the pressure wheel 15 and the wire rope 3 are kept in contact with each other; and when the diameter of the wire rope 3 becomes larger, the wire rope 3 will push the pressure wheel 15 away from the friction roller 12, and the spring 17 will be compressed.
[0043] The electrical testing device described in this embodiment is electrically connected to a protection switch. When burrs appear on the wire rope 3 and the burrs come into contact with the first conductor 21 and the second conductor 22, the electricity carried by the first conductor 21 and the second conductor 22 is conducted to the casing 1 through the wire rope 3. After the electrical testing device detects that the casing 1 is charged, the electrical testing device sends an electrical signal to the controller of the traction and lifting device, so that the controller controls the main motor to stop running, and then stops the wire rope 3 from lifting or lowering heavy objects. This can reduce the possibility of the wire rope 3 being stuck or broken, reduce the difficulty of repairing the wire rope 3, and improve the operating safety of the traction and lifting device. In addition, by stopping the traction and lifting device through the protection switch, the burrs on the wire rope 3 can be stopped directly at the conductor, so that the user can directly observe the condition of the wire rope 3 without having to inspect the entire wire rope 3, which can significantly improve the inspection efficiency of the wire rope 3.
[0044] In addition, the traction and lifting device described in this embodiment is also provided with an electrical unlocking device. When the traction and lifting device is shut down due to the protection switch, the user operates the electrical unlocking device to control the system to shield the electrical signal sent by the protection switch so that the traction and lifting device can operate normally. When the conductor detects burrs on the wire rope 3, it means that the wire rope 3 has just broken. At this time, the wire rope 3 can still be used. Since the protection switch shuts down the traction and lifting device, the weight has been lifted or lowered into the air. After using the electrical unlocking device to release the restriction of the protection switch, the traction and lifting device is started again and the weight is lowered to the ground. After that, it can enter the maintenance state and replace the new wire rope 3. This embodiment can detect the abnormal state of the wire rope 3 at the initial stage of the abnormal state of the wire rope 3 and immediately shut down and alarm, so as to avoid the long-term operation of the wire rope 3 in the abnormal state, which may cause the entire wire rope 3 to break and cause an accident, and can significantly reduce the safety hazards of the traction and lifting device.
[0045] Example 2:
[0046] like Figure 8 As shown, the main difference between this embodiment and the first embodiment is that the pressing member in this embodiment is a pressing block 18, and the two ends of the pressing block 18 are respectively a connecting portion 181 and a pressing end, wherein the connecting portion 181 is on the side of the pressing block 18 away from the friction roller 12, and the pressing end is on the side of the pressing block 18 close to the friction roller 12, and the second conductor 22 is installed at the pressing end, and an axial hole 1811 for the pin shaft to pass through is provided on the connecting portion 181, and the pressing block 18 is hinged to the fixing seat 223 through the pin shaft, and the reset member is a torsion spring and is sleeved on the pin shaft, and the two ends of the torsion spring are respectively against the pressing block 18 and the fixing seat 223, and the torsion spring makes the pressing block 18 have a movement tendency to rotate toward the friction roller 12, and when traction is lifted During the operation of the device, the friction drum 12 rotates and drives the wire rope 3 to rise and fall. When the wire rope 3 passes through the pressure block 18, the pressure block 18 squeezes the wire rope 3, so that the wire rope 3 is tightly attached to the wheel groove and the wire rope 3 is kept in a tensioned state, thereby reducing the swing amplitude of the friction drum 12 and preventing the wire rope 3 from shaking and accidentally touching the conductor; in addition, after replacing the wire rope 3 with a different diameter, when the diameter of the wire rope 3 becomes smaller, the torsion spring acts on the connecting part 181 and drives the pressure block 18 to rotate toward the friction drum 12, so that the pressure block 18 and the wire rope 3 are kept in contact with each other; and when the diameter of the wire rope 3 becomes larger, the wire rope 3 will push the pressure block 18 away from the friction drum 12.
[0047] Example 3:
[0048] like Figure 9 and Figure 10As shown, the main difference between this embodiment and the first embodiment is that the traction and lifting device described in this embodiment is a single-drum electric winch, and the traction and lifting device is only provided with a rope storage drum 11. The rope storage drum 11 stores the wire rope 3 and is also used to drive the wire rope 3 to rise and fall. The housing 1 is provided with a slide rail 4 distributed along the axial direction of the rope storage drum 11. The interior of the slide rail 4 is provided with a slide groove 41 and a slider 42 that slides with the slide groove 41. The slider 42 is provided with a guide hole 421 for the wire rope 3 to pass through. The diameter of the through hole 213 is slightly larger than the diameter of the wire rope 3. The first conductor 21 is fixedly mounted on the slider 42, and the through hole 213 of the first conductor 21 is aligned with the guide hole 421 to facilitate the wire rope 3 to pass through the through hole 213. The diameter of the through hole 213 is larger than the diameter of the guide hole 421. During the operation of the traction and lifting device, the power supply obtains electrical energy from the control system and transmits it to the first conductor 2 through the wire. 1, it should be noted that at least one of the slider 42 or the slide rail 4 is an insulator, or the slider 42 and the slide rail 4 are insulated and connected by an insulator. Therefore, the first conductor 21 is insulated from the housing through the slider 42 or the slide rail 4, thereby preventing the first conductor 21 from being directly connected to the housing 1; when the rope storage drum 11 rotates and drives the wire rope 3 to be raised or lowered, the wire rope 3 will move along the axial direction of the rope storage drum 11. During the movement of the wire rope 3, the wire rope 3 abuts against the guide hole 421 and drives the slider 42 to move along the slide groove 41. In addition, under the restriction of the guide hole 421, the slider 42 can limit the wire rope 3 from shaking significantly when passing through the guide hole 421, thereby forming a tension section of the wire rope 3 at the guide hole 421. The first conductor 21 and the slider 42 are fixedly connected, thereby reducing the possibility of accidental contact between the first conductor 21 and the wire rope 3.
[0049] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Those skilled in the art will understand that the present invention includes, but is not limited to, the contents described in the accompanying drawings and the above specific embodiments. Any modifications that do not deviate from the functional and structural principles of the present invention are intended to be included within the scope of the claims.
Claims
1. A traction lifting device with a wire rope damage detection function, comprising a housing, a rope storage drum for storing the wire rope is arranged in the housing, characterized in that: The casing is connected to a charged conductor, and the conductor is insulated from the casing, the wire rope has a tensioning section that maintains a tensioned state, the conductor is close to the tensioning section and there is a gap between the wire rope, the wire rope produces burrs that contact the conductor and then conducts electricity to the casing to charge the casing, and an electrical testing device is provided on the casing to detect whether the casing is charged.
2. A traction and lifting device with wire rope damage detection function according to claim 1, characterized in that: The traction and lifting device is provided with a fixed guide wheel for guiding the steel wire rope to enter or leave the rope storage drum. The tensioning section comprises a first tensioning section, and the first tensioning section is located on a side of the fixed guide wheel away from the rope storage drum.
3. The traction and lifting device with wire rope damage detection function according to claim 2 is characterized in that: The conductor comprises a connection end positioned at the fixed guide wheel and a first detection end for detecting the steel wire rope. The first detection end is provided with a through hole for the steel wire rope to pass through, and the diameter of the through hole is larger than the diameter of the steel wire rope.
4. The traction and lifting device with wire rope damage detection function according to claim 3 is characterized in that: The first detection end is provided with a notch communicating with the through hole, and the width of the notch is greater than the diameter of the steel wire rope.
5. The traction and lifting device with wire rope damage detection function according to claim 1, characterized in that: The traction and lifting device also includes a friction roller, the tensioning section includes a second tensioning section wound around the friction roller, and the conductor is fixed on one side of the casing close to the friction roller.
6. The traction and lifting device with wire rope damage detection function according to claim 5, characterized in that: The casing is detachably connected to a fixing seat, a conductor is mounted on the fixing seat, an end of the conductor close to the friction roller is a second detection end, the second detection end extends along the axial direction of the friction roller, a clamping member and a reset member are provided on the fixing seat, the clamping member presses against the steel wire rope to keep the steel wire rope taut, the reset member acts on the clamping member and makes the clamping member have a tendency to move toward the steel wire rope.
7. The traction and lifting device with wire rope damage detection function according to claim 6, characterized in that: The clamping member includes a pressing wheel, which is rotatably connected to a rotating shaft. Both ends of the rotating shaft are provided with mounting holes for bolts to pass through. The bolts and the fixing seat cooperate to install the pressing wheel. The reset member is a spring and is sleeved on the bolt. Both ends of the spring are respectively against the rotating shaft and the fixing seat.
8. The traction and lifting device with wire rope damage detection function according to claim 6, characterized in that: The clamping member includes a pressing block, a conductor is fixed to one end of the pressing block close to the friction roller, an end of the pressing block close to the fixing seat is provided with an axial hole for a pin shaft to pass through, the pressing block is hinged to the fixing seat through the pin shaft, the reset member is a torsion spring and is sleeved on the pin shaft, and the two ends of the torsion spring are respectively against the pressing block and the fixing seat.
9. The traction and lifting device with wire rope damage detection function according to claim 1, characterized in that: The electrical testing device is electrically connected to a protection switch. When the electrical testing device detects that the casing is energized, the protection switch controls the traction and lifting device to stop running.
10. The traction and lifting device with wire rope damage detection function according to claim 9, characterized in that: The traction lifting device is provided with an electrical unlocking device, and the electrical unlocking device is used to release the restriction of the protection switch.