Four-drum synchronous motor winch rope collecting device, operation method and double-jib pole lifting device

Abstract

The present application relates to four-drum synchronous motor winching rope collecting device, operation method and double rocker arm pole hoisting device, wherein the four-drum synchronous motor winching rope collecting device comprises a synchronous motor winching device and two electric tail rope collecting devices; the synchronous motor winching device is provided with freely switchable slow gear and fast gear, and can realize synchronous winching of four drums; the electric tail rope collecting device is provided with a wire arranging wheel that reciprocates left and right with the left and right winding of the tail rope, ensuring the orderly and close collection of the tail rope; meanwhile, a tension detector for detecting the tension of the tail rope is arranged between the position of the online disc and the wire arranging main shaft, the tension detector is electrically connected with the control system, and the control system can automatically adjust the rotating speed of the tail rope frequency conversion motor according to the winching slow gear and fast gear switching according to the real-time tension information fed back by the tension detector.

Description

Technical Field

[0001] This invention relates to the field of automatic winch and tail rope collection technology for ground-mounted double-rocker poles, and particularly to a four-drum synchronous motorized winch rope collection device, its operation method, and a double-rocker pole hoisting device. Background Technology

[0002] With the vigorous development of power transmission network construction, especially the continuous increase in large-scale interconnection projects such as cross-river and cross-sea projects, the number and height of power towers have increased significantly. In the construction of these large steel structure power towers, ground-mounted double-rocker gantry cranes have been widely used. However, in the process of luffing and lifting, traditional ground-mounted double-rocker gantry cranes mainly rely on four motorized winches as power sources. The four motorized winches are set around the gantry crane, and manual labor is required to raise and lower the tail rope of the winches. Each motorized winch is equipped with a steel wire rope. This traditional operation method has many shortcomings.

[0003] First, it consumes a significant amount of human resources; four operators need to work together, but due to poor coordination in manual operations, the overall work efficiency is often low. Furthermore, the varying skill levels of the operators can introduce safety risks during construction. Second, traditional operating methods also have problems with signal transmission; the process of issuing and receiving signals may not be clear enough, leading to longer adjustment times during tower hoisting and hindering precise control, further reducing construction efficiency. Summary of the Invention

[0004] To address the aforementioned problems, the present invention aims to provide a four-drum synchronous motorized winch rope-retrieving device, an operating method, and a double-rocker arm hoisting device, so as to achieve centralized control, automated operation, and automatic collection of the tail rope of the winch. The winch is equipped with speed settings, and the speed of tail rope collection can be automatically adjusted according to the speed of the winch to ensure orderly collection of the tail rope.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] The application provides a four-drum synchronous motor winching rope collecting device, which comprises a synchronous motor winching device and two electric tail rope collecting devices. The synchronous motor winching device comprises two double-drum winching mechanisms, a winching variable frequency motor arranged between the two double-drum winching mechanisms and a transfer case, a clutch cone disc and slow and fast shift clutch gears matched with the clutch cone disc are arranged on a rotating main shaft in the transfer case, the rotating main shaft is driven to rotate by the winching variable frequency motor, a threaded sleeve is threadedly connected to the rotating main shaft at the outside of the slow and fast shift clutch gears, the two threaded sleeves are driven to synchronously move in the same direction by a gear shifting mechanism, the meshing gear ring at the inner end of one of the threaded sleeves is engaged with one of the slow and fast shift clutch gears, and the other threaded sleeve is separated from the other one of the slow and fast shift clutch gears; the slow and fast shift clutch gears are respectively driven to rotate the rotating slave shafts symmetrically arranged on the two sides of the rotating main shaft through gear sets, and each rotating slave shaft is connected with a gear box connected with the two drums through an electromagnetic clutch. Each electric tail rope collecting device is correspondingly arranged behind the two double-drum winching mechanisms, and the electric tail rope collecting device comprises a wire reel rotatably arranged at the rear end of a rack, the wire reel is driven to rotate by a tail rope variable frequency motor, a wire arranging main shaft and a wire arranging auxiliary shaft are arranged at the front end of the rack, the wire arranging main shaft is driven to synchronously rotate with the wire reel by the tail rope variable frequency motor, a reciprocating thread is arranged on the surface of the wire arranging main shaft, a reciprocating sliding sleeve is arranged on the wire arranging main shaft, the reciprocating sliding sleeve moves axially along the wire arranging main shaft, a wire arranging wheel is connected to the reciprocating sliding sleeve, and a limiting roller integrated on the wire arranging wheel is clamped on the wire arranging auxiliary shaft; a tension detector for detecting the tension of the tail rope is arranged between the wire reel and the wire arranging main shaft, the tension detector is electrically connected with a control system, and the control system automatically adjusts the rotating speed of the tail rope variable frequency motor according to the real-time tension information fed back by the tension detector.

[0007] As one of the specific embodiments, the threaded sleeve is provided with a meshing tooth surface at the outer end, the gear shifting mechanism comprises a linkage rod rotatably arranged in the transfer case and parallel to the rotating main shaft, the linkage rod is fixedly connected with a sector gear at the positions corresponding to the two threaded sleeves, each sector gear is engaged with the meshing tooth surface on the threaded sleeve at the corresponding position, and the linkage rod is driven to reciprocatingly rotate by a gear shifting driving mechanism.

[0008] As one of the specific embodiments, the gear shifting driving mechanism comprises an electric push rod arranged on the transfer case, the electric push rod is connected with a push connecting rod, and the push connecting rod is connected with the linkage rod.

[0009] As one of the specific embodiments, the two double-drum winching mechanisms, the winching variable frequency motor and the transfer case are supported by a chassis, the winching variable frequency motor is fixed on the chassis through a motor support, the two double-drum winching mechanisms and the winching variable frequency motor are arranged on one side of the chassis, and the transfer case is arranged on the other side of the chassis.

[0010] As one of the specific embodiments, the rotating main shaft is arranged on the transfer case and penetrates the transfer case near one end of the winch variable frequency motor, and the end penetrating the transfer case is connected with the output shaft of the winch variable frequency motor through a cross joint.

[0011] As one of the specific embodiments, the electromagnetic clutch is connected with the double-drum winch mechanism through an elastic coupling.

[0012] As one of the specific embodiments, the wire disc is arranged on the frame through a driving shaft, the tail rope variable frequency motor is connected with the driving shaft to drive the wire disc to rotate, and a small sprocket is fixedly sleeved on the end of the driving shaft near the tail rope variable frequency motor; a large sprocket is fixedly sleeved on the side of the tail rope variable frequency motor near the wire arranging main shaft, and the large sprocket and the small sprocket are connected through a chain.

[0013] As one of the specific embodiments, the wire arranging wheel comprises a wire arranging base fixed in the middle of the reciprocating sliding sleeve, a transverse roller rotatable and parallel to the transverse direction of the wire arranging main shaft is arranged on the end of the wire arranging base near the wire disc, two vertical vertical rollers rotatable are arranged on the end of the wire arranging base near the wire arranging auxiliary shaft, and a wire arranging channel for the tail rope to pass through is formed between the two vertical rollers; a connecting seat is connected to the side of the wire arranging base near the wire arranging auxiliary shaft, two vertical limiting rollers rotatable are arranged on the connecting seat in intervals, and the wheel surface of the limiting rollers is concave and clamped on the wire arranging auxiliary shaft.

[0014] The application also provides an operation method of the four-drum synchronous motor winch rope collecting device, which comprises the following steps:

[0015] Each component of the synchronous motor winch device is checked to ensure that all components are intact and fasteners are not loose, and each component of the electric tail rope collecting device is checked to ensure that each component is in normal function and the connection is stable.

[0016] The power supply is turned on, and the winch variable frequency motor is started to preheat; the winch variable frequency motor is started, and the winch variable frequency motor starts to operate to generate power.

[0017] According to the operation requirement, the slow gear or the fast gear mode is selected; the power is transmitted from the transfer case to the four drums through the electromagnetic clutch, the electromagnetic clutch is operated according to the control signal, the four drums start to operate synchronously under the drive of the power, and the winching operation is performed.

[0018] When the winching operation starts, two electric tail rope collecting devices are started at the same time, the tail rope variable frequency motor drives the wire disc to start to rotate to prepare to collect the tail rope; the wire arranging main shaft rotates, and the wire arranging wheel reciprocates to realize the orderly arrangement of the tail rope.

[0019] When the tail rope passes the tension detector, the tension detector monitors the tension of the tail rope in real time and feeds the data back to the control system. The control system automatically adjusts the speed of the tail rope variable frequency motor according to the data fed back by the tension detector, so that the collection speed of the tail rope matches the working speed of the winch equipment.

[0020] When the synchronous motorized winch finishes its work and stops running, the electric tail rope collection device also stops working.

[0021] The present invention also provides a ground-mounted double-rocker arm hoisting device, including a double-rocker arm hoist and the aforementioned four-drum synchronous motorized winch rope winding device. Two four-drum synchronous motorized winch rope winding devices are respectively arranged on opposite sides of the double-rocker arm hoist. One of the four-drum synchronous motorized winch rope winding devices is used to wind up and unwind the two steel wire ropes used for lifting, and the other four-drum synchronous motorized winch rope winding device is used to wind up and unwind the two steel wire ropes used for luffing.

[0022] The present invention has the following beneficial effects:

[0023] This invention discloses a four-drum synchronous motorized winch rope winding device, comprising a synchronous motorized winch and two electric tail rope collecting devices. The synchronous motorized winch is equipped with freely switchable slow and fast speeds to suit different winch requirements and achieves synchronous winch operation of the four drums. The electric tail rope collecting devices are equipped with a cable guide wheel that moves back and forth as the tail rope winds, ensuring orderly and tight collection of the tail rope. Simultaneously, a tension detector for detecting tail rope tension is installed between the cable reel and the cable guide shaft. The tension detector is electrically connected to the control system. Based on the real-time tension information fed back by the tension detector, the control system can automatically adjust the speed of the tail rope variable frequency motor according to the switching between the slow and fast winch speeds.

[0024] Specifically,

[0025] 1. High-efficiency synchronous drive: By setting up double-drum winch mechanisms on both sides of the base frame, and cooperating with winch frequency conversion motors and corresponding drive components, synchronous drive of the four drums is achieved. This ensures the coordination and consistency of the winch equipment during operation, improving construction efficiency.

[0026] 2. Flexible operating modes: The transfer case features both slow and fast operating modes, which can be flexibly switched according to actual construction needs. This allows the winch assembly to adapt to different working scenarios and load requirements, enhancing its versatility and practicality.

[0027] 3. Stable Transmission System: A stable transmission system is formed through the coordinated use of components such as the cross coupling, clutch cone, slow-gear clutch gear, and fast-gear clutch gear. This design not only improves the accuracy and reliability of transmission but also effectively reduces energy loss and noise during the transmission process.

[0028] 4. Convenient Gear Shifting: The introduction of electric push rods and linkages makes gear shifting more convenient and efficient. The extension and retraction of the electric push rod allows for easy switching between slow and fast gears, improving operational convenience and efficiency.

[0029] 5. Automated tail rope collection: The electric tail rope collection device enables automated collection of the tail rope. Through the coordinated work of the frame, reel, tail rope frequency converter motor, and guide wheel, the tail rope is ensured to be arranged in an orderly and compact manner on the reel, improving the collection efficiency and neatness.

[0030] 6. Precise cable laying control: The meticulous design of the cable laying main shaft, cable laying sub-shaft, and cable laying wheel enables precise cable laying control. The cable laying roller assembly can slide smoothly on the cable laying main shaft, ensuring the even arrangement of the tail rope. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0032] Figure 2 A schematic diagram of the front structure of a synchronous motorized winch;

[0033] Figure 3 A top view schematic diagram of a synchronous motorized winch;

[0034] Figure 4 This is a schematic diagram of the internal structure of a synchronous motorized winch.

[0035] Figure 5 This is a schematic diagram of the internal structure of the transfer case;

[0036] Figure 6 This is a schematic diagram of the gear shifting mechanism;

[0037] Figure 7 This is a schematic diagram of the internal structure of a double-drum winch mechanism;

[0038] Figure 8 A schematic diagram of the front structure of the electric tail rope collection device;

[0039] Figure 9 A top view schematic diagram of the electric tail rope collection device;

[0040] Figure 10 This is a partial structural diagram of an electric tail rope collection device. Detailed Implementation

[0041] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0042] Example 1

[0043] SeeFigure 1 A four-drum synchronous motorized winch rope-collecting device includes a synchronous motorized winch device 1 and an electric tail rope collecting device 2.

[0044] See Figures 2 to 7 The synchronous motorized winch equipment 1 includes a base frame 11, two double-drum winch mechanisms 12 fixed at intervals on one side of the base frame 11, and a winch variable frequency motor 13 disposed between the two double-drum winch mechanisms 12. The winch variable frequency motor 13 is fixed to the base frame 11 by a motor bracket 131. A transfer case 14 is provided on the other side of the base frame 11.

[0045] A rotating main shaft 141 is rotatably supported within the transfer case 14, coaxial with the output shaft of the winch frequency converter motor 13. A clutch cone 142 is disposed in the middle of the rotating main shaft 141, and a slow-speed clutch gear 143 and a fast-speed clutch gear 144 are disposed on both sides of the clutch cone 142, which cooperate with the clutch cone 142. The rotating main shaft 141 is rotatably mounted on the transfer case 14, and one end of the rotating main shaft 141 protrudes from the transfer case 14 near the winch frequency converter motor 13. The protruding end of the rotating main shaft 141 is connected to the output shaft of the winch frequency converter motor 13 through a cross coupling 151.

[0046] External threads are provided on the outer sections of the slow-gear clutch gear 143 and the fast-gear clutch gear 144 on the rotating main shaft 141, and a threaded sleeve 145 is threadedly connected to them. The threaded sleeve 145 has internal threads, and a meshing gear ring is provided on the inner end of the threaded sleeve 145, and a meshing tooth surface is provided on the outer end of the threaded sleeve 145. The meshing gear ring on the inner end of the threaded sleeve 145 can mesh with the internal gear rings of the slow-gear clutch gear 143 and the fast-gear clutch gear 144. A linkage rod 146 parallel to the rotating main shaft 141 is rotatably provided on one side of the rotating main shaft 141. A sector gear 147 is fixedly connected to the linkage rod 146 at the position corresponding to the two threaded sleeves 145, and each sector gear 147 meshes with the meshing tooth surface on the threaded sleeve 145 at the corresponding position.

[0047] A shift drive mechanism 16 is connected to the outside of the transfer case 14 to drive the linkage 146 to rotate. The shift drive mechanism 16 drives the linkage 146 to rotate, which in turn drives the two sector gears 147 fixed on the linkage 146 to rotate. The sector gears 147 mesh with the meshing tooth surfaces of the two threaded sleeves 145, causing the threaded sleeves 145 to move axially in the same direction synchronously. This allows the meshing gear ring at the inner end of the threaded sleeve 145 to mesh with one of the slow-gear clutch gear 143 and the fast-gear clutch gear 144, while the other is disengaged, thus achieving clutch engagement. In one embodiment, the shift drive mechanism 16 includes an electric push rod 161 mounted on the transfer case 14. The electric push rod 161 is connected to a push link 162, which is connected to the linkage 146. The extension and retraction of the electric push rod 161 drives the linkage 146 to reciprocate. The aforementioned shift drive mechanism 16, linkage rod 146, and sector gears 147 connecting the two linkage rods 146 constitute a shift mechanism for switching between slow and fast gears.

[0048] The transfer case 14 contains symmetrically arranged driven shafts 148 on both sides of the main rotating shaft 141. A driven gear 149 is fixedly fitted in the middle of each driven shaft 148. The external gear rings of the slow-gear clutch gear 143 and the fast-gear clutch gear 144 mesh with the driven gears 149 of the driven shafts 148 through gear sets. The two driven shafts 148 are rotatably mounted on the transfer case 14, with one end near the winch frequency converter motor 13 extending out of the transfer case 14. The end of the driven shaft 148 extending out is connected to an electromagnetic clutch 152, and the end of the electromagnetic clutch 152 is connected to the double-drum winch mechanism 12 via a flexible coupling 153.

[0049] The double-drum winch mechanism 12 includes a gearbox 121 and two drums 122. Two support shafts 123, perpendicular to the main rotating shaft 141, are rotatably mounted inside the gearbox 121. The ends of the support shafts 123, away from the winch frequency converter motor 13, extend out of the gearbox 121 and connect to the drums 122. The two support shafts 123 mesh with bevel gears fixed to the end of the flexible coupling 153 via a gear set. The two drums 122 on one side of the double-drum winch mechanism 12, used to connect one of the wire ropes for lifting or luffing, are used to connect the other wire rope for lifting or luffing.

[0050] Driven by the variable frequency motor 13 of the winch, the synchronous operation of the four drums 122 connecting the two wire ropes for hoisting or the two wire ropes for luffing can be achieved by controlling the electromagnetic clutch 152.

[0051] Electric tail rope collecting devices 2 are provided for each of the two double-drum winch mechanisms 12. Each electric tail rope collecting device 2 is located behind the two double-drum winch mechanisms 12.

[0052] See Figures 8 to 10 The electric tail rope collection device 2 includes a frame 21. A spool 22 and a tail rope frequency converter motor 231 are arranged at the rear end of the frame 21. The spool 22 is rotatably mounted on the frame 21 via a drive shaft 232. The tail rope frequency converter motor 231 is connected to the drive shaft 232 to drive the spool 22 to rotate. A small sprocket 233 is fixedly sleeved on the end of the drive shaft 232 near the end of the tail rope frequency converter motor 231.

[0053] The front end of the frame 21 is provided with a main cable-laying shaft 241 and a secondary cable-laying shaft 242 parallel to the drive shaft 232, with the main cable-laying shaft 241 located between the drive shaft 232 and the secondary cable-laying shaft 242. The surface of the main cable-laying shaft 241 is provided with reciprocating threads. A large sprocket 234 is fixedly sleeved on the side of the main cable-laying shaft 241 near the tail rope inverter motor 231, and the large sprocket 234 is connected to a small sprocket 233 by a chain 235. A reciprocating sleeve 243 is sleeved on the main cable-laying shaft 241, and the reciprocating sleeve 243 reciprocates axially along the main cable-laying shaft 241. A reciprocating sleeve 243 is connected to a cable guide wheel. Specifically, the cable guide wheel includes a cable guide base 244 fixedly connected to the middle of the reciprocating sleeve 243. At one end of the cable guide base 244 near the drive shaft 232, a rotatable transverse roller 245 parallel to the transverse direction of the main cable guide shaft 241 is provided. At the other end of the cable guide base 244 near the cable guide secondary shaft 242, two rotatable vertical rollers 246 are spaced apart. A cable guide channel for the tail rope to pass through is formed between the two vertical rollers 246. A connecting seat 247 is connected to the side of the cable guide base 244 near the cable guide secondary shaft 242. Two rotatable vertical limiting rollers 248 are spaced apart on the upper part of the connecting seat 247, and the limiting rollers 248 are concave and engaged on the cable guide secondary shaft 242.

[0054] Driven by the variable frequency motor 231, the drive shaft 232 and the main shaft 241 rotate synchronously. At the same time, the reciprocating sleeve 243 reciprocates along the axial direction of the main shaft 241, thereby arranging the tail rope in an orderly and tight manner on the reel 22.

[0055] A tension detector is installed between the online reel 22 and the main cable spindle 241 to detect the tension of the tail rope. The tail rope passes through the tension detector during the collection process. The tension detector monitors the tension of the tail rope in real time and feeds the data back to the control system. The control system automatically adjusts the speed of the tail rope variable frequency motor 231 based on the real-time tension information fed back by the tension detector. The detection range of the tension detector is 45kg-55kg.

[0056] The operation method of the above-mentioned four-drum synchronous motorized winch rope winding device specifically includes the following steps:

[0057] Step 1: Inspect all components of the synchronous motorized winch equipment 1, including the base frame 11, motor bracket 131, winch frequency conversion motor 13, cross coupling 151, transfer case 14, clutch cone 142, slow gear clutch gear 143, fast gear clutch gear 144, shift drive mechanism 16, sector gear 147, threaded sleeve 145, electromagnetic clutch 152, flexible coupling 153, and gearbox 121, etc., to ensure that all components are intact and that fasteners are not loose;

[0058] Step 2: Inspect the frame 21, reel 22, tail rope frequency converter motor 231, tension detector and control system of the electric tail rope collection device 2 to ensure that each component is functioning properly and the connection is secure.

[0059] Step 3: Connect the power supply and start the winch frequency converter motor 13 for preheating to ensure that the winch frequency converter motor 13 runs smoothly without abnormal noise; check the initial state of components such as electric push rod 161 and electromagnetic clutch 152 to ensure that they are in the correct working position.

[0060] Step 4: Start the winch variable frequency motor 13. The winch variable frequency motor 13 starts to run and generates power. The power is transmitted to the transfer case 14 through the cross coupling 151.

[0061] Step 5: Select the slow or fast mode according to the work requirements. When the slow or fast mode is selected, the electric push rod 161 drives the linkage rod 146 through the push rod 162, and the sector gear 147 makes the corresponding threaded sleeve 145 mesh with the corresponding slow clutch gear 143 or fast clutch gear 144, thereby realizing the transmission of power.

[0062] Step 6: Power is transmitted from the transfer case 14 to the four drums 122 through the electromagnetic clutch 152 and the flexible coupling 153. The electromagnetic clutch 152 engages and disengages according to the control signal, and the four drums 122 start to run synchronously under the drive of the power to perform winch operation.

[0063] Step 7: During the winch operation, the operator must pay close attention to the equipment's operating status and winch effect, and adjust the motor speed and direction in real time to meet different winch needs. If there is any abnormality or the machine needs to be stopped, the operator should immediately press the emergency stop button to ensure the safety of the equipment and personnel.

[0064] Step 8: When the winch operation begins, start two electric tail rope collection devices 2 at the same time. The tail rope frequency conversion motor 231 drives the reel 22 to start rotating, ready to collect the tail rope.

[0065] Step 9: The large sprocket 234 and the small sprocket 233 work together to drive the main shaft 241 of the cable laying through the chain 235; the tail rope is wound onto the reel 22 through the cable laying channel on the main shaft 241, and the orderly arrangement of the tail rope is achieved through the reciprocating motion of the cable laying wheel.

[0066] Step 10: When the tail rope passes the tension detector, the tension detector monitors the tension of the tail rope in real time and feeds the data back to the control system. The control system automatically adjusts the speed of the tail rope variable frequency motor 231 according to the data fed back by the tension detector, so that the collection speed of the tail rope matches the working speed of the winch equipment.

[0067] Step 11: After the tail rope is arranged, it is finally tightly and orderly wound on the reel 22. The reel 22 is connected to the tail rope frequency converter motor 231 through the drive shaft 232. The rotation of the tail rope frequency converter motor 231 drives the reel 22 to rotate, thereby realizing the automatic collection of the tail rope.

[0068] Step 13: When the synchronous motorized winch 1 finishes its work and stops running, the electric tail rope collecting device 2 also stops working.

[0069] Example 2

[0070] The ground-mounted double-rocker boom hoisting device includes a double-rocker boom and two four-drum synchronous motorized winch rope winding devices as described in Embodiment 1. The two four-drum synchronous motorized winch rope winding devices are respectively set on opposite sides of the double-rocker boom. One of the four-drum synchronous motorized winch rope winding devices is used to wind up and unwind the two steel wire ropes used for lifting, and the other four-drum synchronous motorized winch rope winding device is used to wind up and unwind the two steel wire ropes used for luffing.

[0071] The above description is merely a specific embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made based on the content of the present invention specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A four-drum synchronous motorized winch rope winding device, characterized in that: Includes a synchronous motorized winch and two electric tail rope collection devices; The synchronous motorized winch equipment includes two double-drum winch mechanisms, a winch frequency converter motor disposed between the two double-drum winch mechanisms, and a transfer case. The rotating main shaft inside the transfer case is equipped with a clutch cone disc and a slow-gear and a fast-gear clutch gear that mesh with the clutch cone disc. The rotating main shaft is driven to rotate by the winch frequency converter motor. A threaded sleeve is threadedly connected to the outer section of each of the slow-gear and fast-gear clutch gears on the rotating main shaft. The two threaded sleeves are driven synchronously and in the same direction by a shifting mechanism, causing the meshing gear ring at the inner end of one threaded sleeve to mesh with one of the slow-gear and fast-gear clutch gears, while the other threaded sleeve... Separated from the slow and fast clutch gears, the outer end of the threaded sleeve is provided with meshing tooth surfaces. The shifting mechanism includes a linkage rod parallel to the rotating main shaft and rotatably disposed in the transfer case. A sector gear is fixedly connected to the linkage rod at the position corresponding to the two threaded sleeves. Each sector gear meshes with the meshing tooth surfaces on the corresponding threaded sleeves. The linkage rod is driven to reciprocate by the shifting drive mechanism. The slow and fast clutch gears drive the rotating driven shafts symmetrically disposed on both sides of the rotating main shaft through gear sets. Each rotating driven shaft is connected to the gearbox connecting the two drums through an electromagnetic clutch. Each electric tail rope collecting device is positioned behind the two double-drum winches. Each device includes a spool rotatably mounted at the rear of the frame, driven by a tail rope frequency converter motor. A main winding shaft and a secondary winding shaft are located at the front of the frame. The main winding shaft is driven by the same motor and rotates synchronously with the spool. The main winding shaft has reciprocating threads on its surface and a reciprocating sleeve is fitted around it. The reciprocating sleeve reciprocates axially along the main winding shaft. A winding wheel is connected to the reciprocating sleeve, and a limiting roller integrated on the winding wheel is engaged with the secondary winding shaft. The winding wheel includes a winding base fixed in the middle of the reciprocating sleeve, with one end of the base near the spool. The system is equipped with a rotatable transverse roller parallel to the main shaft of the cable laying system. Two rotatable vertical rollers are spaced apart at one end of the cable laying base near the secondary shaft, forming a cable laying channel for the tail rope to pass through. A connecting seat is connected to the side of the cable laying base near the secondary shaft, and two rotatable vertical limiting rollers are spaced apart on the connecting seat. The limiting rollers are recessed and engaged with the secondary shaft. A tension detector is installed between the cable reel and the main shaft to detect the tail rope tension. The tension detector is electrically connected to the control system, which automatically adjusts the speed of the tail rope inverter motor based on the real-time tension information fed back by the tension detector.

2. The four-drum synchronous motorized winch rope winding device according to claim 1, characterized in that: The shift drive mechanism includes an electric push rod mounted on the transfer case, which is connected to a push link rod, and the push link rod is connected to a linkage rod.

3. The four-drum synchronous motorized winch rope winding device according to claim 1, characterized in that: The two double-drum winch mechanisms, the winch frequency converter motor, and the transfer case are supported by the base frame. The winch frequency converter motor is fixed on the base frame by the motor bracket. The two double-drum winch mechanisms and the winch frequency converter motor are set on one side of the base frame, and the transfer case is set on the other side of the base frame.

4. The four-drum synchronous motorized winch rope winding device according to claim 1, characterized in that: The rotating main shaft is mounted on the transfer case, and one end of the main shaft protrudes from the transfer case near the winch frequency converter motor. The protruding end of the rotating main shaft is connected to the output shaft of the winch frequency converter motor through a cross coupling.

5. The four-drum synchronous motorized winch rope winding device according to claim 1, characterized in that: The end of the electromagnetic clutch is connected to the double-drum winch mechanism via a flexible coupling.

6. The four-drum synchronous motorized winch rope winding device according to claim 1, characterized in that: The spool is mounted on the frame via a drive shaft. The tail rope frequency converter motor is connected to the drive shaft to drive the spool to rotate. A small sprocket is fixedly fitted on the end of the drive shaft near the tail rope frequency converter motor. A large sprocket is fixedly fitted on the side of the main shaft near the tail rope frequency converter motor. The large sprocket and the small sprocket are connected by a chain.

7. The operating method of the four-drum synchronous motorized winch rope winding device as described in claim 1, characterized in that, Includes the following steps: Inspect all components of the synchronous motorized winch to ensure that all components are intact and fasteners are not loose; inspect all components of the electric tail rope collection equipment to ensure that all components are functioning properly and connections are secure. Connect the power supply and start the winch frequency converter motor for preheating; start the winch frequency converter motor, and the winch frequency converter motor will start running and generate power. Choose the slow or fast mode according to the job requirements; Power is transmitted from the transfer case to the four drums via electromagnetic clutches. The electromagnetic clutches engage and disengage according to the control signal, and the four drums start to run synchronously under the drive of the power to perform winch operation. When the winch operation begins, two electric tail rope collection devices are started simultaneously. The tail rope frequency conversion motor drives the reel to start rotating, ready to collect the tail rope; the main shaft of the wire guide rotates, and the wire guide wheel reciprocates, thereby achieving the orderly arrangement of the tail rope. When the tail rope passes the tension detector, the tension detector monitors the tension of the tail rope in real time and feeds the data back to the control system. The control system automatically adjusts the speed of the tail rope variable frequency motor according to the data fed back by the tension detector, so that the collection speed of the tail rope matches the working speed of the winch equipment. When the synchronous motorized winch finishes its work and stops running, the electric tail rope collection device also stops working.

8. A ground-mounted double-rocker arm hoisting device, characterized in that: It includes a double rocker arm boom and two four-drum synchronous motorized winch rope winding devices as described in any one of claims 1-6. The two four-drum synchronous motorized winch rope winding devices are respectively arranged on opposite sides of the double rocker arm boom. One of the four-drum synchronous motorized winch rope winding devices is used to wind up and unwind the two steel wire ropes used for lifting, and the other four-drum synchronous motorized winch rope winding device is used to wind up and unwind the two steel wire ropes used for luffing.

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