Double drive wire rope hoist system for use in water projects

Abstract

The utility model provides a kind of double-drive wire rope hoist system in water conservancy project.The wire rope hoist system includes wire rope reel, hydraulic drive device, electric drive device, center transmission shaft, first gear transmission mechanism, safety brake device and hydraulic control system, the center transmission shaft passes through wire rope reel movably, and is connected with center transmission shaft transmission by first gear transmission mechanism, and the both ends of center transmission shaft respectively extend wire rope reel, form two power input ends, the power output end of hydraulic drive device is connected with center transmission shaft by always-open clutch, and the power output end of electric drive device is connected with center transmission shaft by always-closed clutch connection.The utility model selects one of drive device as main drive device, and after the drive device fails, the spare drive device can be conveniently replaced, and the alternative drive scheme can be quickly switched to, to ensure that wire rope reel works normally.

Description

Technical Field

[0001] This utility model relates to the gate opening and closing technology of water conservancy and hydropower projects, specifically a wire rope winch system driven by both hydraulic motor and electric motor. Background Technology

[0002] In water conservancy and hydropower projects, wire rope winches are commonly used gate opening and closing mechanisms, widely applied in gantry cranes, bridge cranes, and fixed winches. Common wire rope drum drive methods include hydraulic motor drive and electric motor drive. The drive mechanism is connected to the drum, with one end of the wire rope connected to the drum and the other end connected to a fixed pulley block and its movable pulley block. The movable pulley block is then connected to the gate. When the electric motor starts, it drives the drum to rotate, causing the wire rope to unwind and rewind, thus completing the opening and closing of the gate.

[0003] Hydraulic motor drive uses a hydraulic pump to drive a hydraulic motor, which is directly connected to the drum, driving the drum to rotate and complete the gate opening and closing process. Hydraulic motor-driven drums do not require a reducer; flow rate is adjusted via hydraulic valves, enabling smooth start / stop and speed control. The hydraulic system is well-suited to heavy loads, has excellent impact resistance, is waterproof and dustproof, and is suitable for humid environments. Electric motor drive is the most common type of drive, directly converting electrical energy into mechanical energy. The electric motor connects to a reducer, driving the drum to rotate and complete the gate opening and closing. Electric motor drives have a simple structure, low failure rate, and are relatively inexpensive. High-precision positioning can be achieved using encoders.

[0004] Currently, there is usually only one type of drive method for wire rope drums used in water conservancy and hydropower projects. Once this drive method fails, the drum cannot operate normally. If an accident occurs at this time, the gate cannot be opened or closed normally, which will increase the accident losses. Utility Model Content

[0005] The purpose of this invention is to provide a dual-drive wire rope winch system. This winch system is equipped with both a hydraulic motor and an electric motor as drive devices. Under normal circumstances, one of these methods can be selected as the main drive method. When the main drive method fails, it can be quickly switched to the alternative drive scheme to ensure the normal operation of the wire rope drum.

[0006] To achieve the above-mentioned technical objectives, this utility model provides a dual-drive wire rope winch system for water conservancy projects. The wire rope winch system includes a wire rope drum, a hydraulic drive unit, an electric drive unit, a central drive shaft, a first gear transmission mechanism, a safety braking device, and a hydraulic control system. The central drive shaft movably passes through the wire rope drum and is connected to it via the first gear transmission mechanism. Both ends of the central drive shaft extend out of the wire rope drum, forming two power input shafts. A normally open clutch and a normally closed clutch are connected to each of the two power input ends, respectively. The power output end of the hydraulic drive unit is connected to the central drive shaft via the normally open clutch, and the power output end of the electric drive unit is connected to the central drive shaft via the normally closed clutch. The hydraulic control system provides hydraulic oil control for the hydraulic drive unit, the normally open clutch, and the normally closed clutch. The safety braking device includes a braking assembly and brake friction pads disposed at the ends of the wire rope drum. The braking assembly includes two brake discs symmetrically disposed on both sides of the brake friction pads. The control end of the braking assembly is connected to the control systems of the hydraulic drive unit and the electric drive unit, respectively.

[0007] The preferred technical solution of this utility model is as follows: the first gear transmission mechanism adopts a first planetary gear set, the end of the wire rope drum near the electric drive device is open, the first gear transmission mechanism is installed at the open end of the wire rope drum, the first planetary gear ring of the first gear transmission mechanism is fixedly installed on the inner wall of the wire rope drum, and the first planetary carrier and the first sun gear are both fixed on the central transmission shaft.

[0008] The preferred technical solution of this utility model is as follows: the power output end of the electric drive device is connected to the normally closed clutch through a second gear transmission mechanism; the electric drive device includes a first motor and a second motor; the second gear transmission mechanism includes a second planetary gear set and a transmission gear; the output shaft of the first motor is connected to the sun gear central shaft of the second planetary gear set; the planet carrier of the second planetary gear set is connected to the central transmission shaft; the gear ring of the second planetary gear set has transmission teeth on both the inner and outer sides; the transmission gear is installed on the output shaft of the second motor, and the transmission gear meshes with the transmission teeth on the outer side of the gear ring of the second planetary gear set.

[0009] The preferred technical solution of this utility model is as follows: The normally open clutch includes a first hydraulic cylinder, a first friction plate, and a first friction disc. The first friction plate is installed on the piston end of the first hydraulic cylinder. A first spring is provided in the rod chamber of the first hydraulic cylinder. The first spring is sleeved outside the piston rod, with one end connected to the first piston push plate and the other end connected to the cylinder body of the first hydraulic cylinder. The hydraulic control system is connected to the rodless chamber of the first hydraulic cylinder through a first hydraulic oil control pipeline. Under normal conditions, the rodless chamber of the first hydraulic cylinder is empty of oil, and the first friction plate and the first friction disc are in a normally open state under the action of the first spring. When oil is introduced into the rodless chamber of the first hydraulic cylinder, the first piston push plate pushes the first spring in the rod chamber of the hydraulic cylinder to compress, and the first friction plate and the first friction disc come into contact, and the normally open clutch is in working condition.

[0010] The preferred technical solution of this utility model is as follows: The normally closed clutch includes a second hydraulic cylinder, a second friction plate, and a second friction disc. The second friction plate is installed on the piston end of the second hydraulic cylinder. A second spring is provided in the rodless chamber of the second hydraulic cylinder. One end of the second spring is connected to the rodless end face of the second piston push plate, and the other end is connected to the cylinder body of the second hydraulic cylinder. The hydraulic control system is connected to the rod chamber of the second hydraulic cylinder through a second hydraulic oil control pipeline. Under normal conditions, there is no oil in the rod chamber of the second hydraulic cylinder, and the second friction plate and the second friction disc are in a normally closed state under the action of the second spring. When oil enters the rod chamber of the second hydraulic cylinder, it pushes the second spring in the rodless chamber of the cylinder, separating the second friction plate and the second friction disc, and the normally open clutch is closed.

[0011] The preferred technical solution of this utility model is as follows: The hydraulic drive device includes a bidirectional hydraulic motor and a hydraulic oil control circuit; the hydraulic oil control circuit includes a hydraulic oil tank, a first oil pump, a three-position four-way directional valve, a throttle valve, a first two-position two-way directional valve, a second two-position two-way directional valve, a hydraulic control valve, and hydraulic pipelines; the throttle valve is located at the oil inlet end of the hydraulic motor, the three-position four-way directional valve is located at the oil outlet end of the first oil pump, and the first two-position two-way directional valve is located on the oil return pipe of the hydraulic motor; the hydraulic oil control circuit provides hydraulic oil to the hydraulic motor, normally open clutch, normally closed clutch, and safety braking device.

[0012] The preferred technical solution of this utility model is as follows: The braking assembly further includes a second oil pump, two sets of brake cylinders, and hydraulic oil pipes connecting the second oil pump and the two sets of brake cylinders. Each set of brake cylinders has a third spring in its rodless chamber. One end of each third spring is fixed to the inner wall of the corresponding cylinder body, and the other end is connected to the corresponding piston push plate. The two sets of brake cylinders are symmetrically arranged on both sides of the brake friction pads. Two brake discs are respectively connected to the piston ends of the two sets of brake cylinders. The brake friction pads are arranged in a circle along the outer wall of the wire rope drum. The hydraulic oil pipes are connected to the rod chambers of the two sets of brake cylinders via two branch pipes. The hydraulic control system is connected to the hydraulic oil pipes via a third hydraulic control line, and a hydraulic control valve is provided on the hydraulic oil pipes. The electrical control system of the electric drive device is connected to the control terminal of the second oil pump via an electrical control line, and the oil inlet of the oil pump is connected to the hydraulic control system via an oil pipe.

[0013] This utility model discloses a dual-drive wire rope winch system, comprising a drum assembly, a hydraulic drive unit, a motor drive unit, a safety braking device, a gear transmission unit, and a clutch. A gear ring is installed inside the drum assembly, meshing with a secondary planetary gear. The secondary planetary gear and the central sun gear are fixed by a frame. A brake disc is installed at the end of the drum assembly, which can be clamped and locked by a disc brake. An open clutch and a normally closed clutch are respectively installed at both ends of the drive shaft of the drum assembly. The electric drive unit and the hydraulic drive unit are distributed at both ends of the drum assembly, connected to the drive shaft of the drum assembly through the normally closed clutch and the normally open clutch, respectively. One drive unit is selected as the primary drive unit, and if this drive unit fails, the backup drive unit can be easily replaced, allowing for rapid switching to the alternative drive scheme and ensuring the normal operation of the wire rope drum. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the structure of the wire rope drum in this utility model;

[0016] Figure 3 This is a schematic diagram of the safety braking device in this utility model;

[0017] Figure 4 This is a schematic diagram of the hydraulic drive device in this utility model;

[0018] Figure 5 This is a schematic diagram of the electric drive device in this utility model.

[0019] In the diagram: 1. Wire rope drum; 2. Hydraulic drive unit; 200. Bidirectional hydraulic motor; 201. First oil pump; 202. Three-position four-way directional valve; 203. Throttle valve; 204. First two-position two-way directional valve; 205. Second two-position two-way directional valve; 206. Second hydraulic control valve; 3. Electric drive unit; 300. First motor; 301. Second motor; 4. Central drive shaft; 5. Normally open clutch; 500. First cylinder; 501. First friction plate; 502. First friction disc; 503. First spring; 504. First piston push plate; 6. Normally closed clutch; 600. Second cylinder; 601. Second... 602. Friction pad; 603. Second friction disc; 604. Second spring; 605. Second piston push plate; 7. Braking assembly; 700. Brake disc; 701. Second oil pump; 702. Brake cylinder; 703. Third spring; 704. Hydraulic oil pipe; 705. First hydraulic control valve; 8. First gear transmission mechanism; 800. First planetary ring gear; 801. First planetary carrier; 802. First sun gear; 9. Second planetary gear set; 10. Brake friction pad; 11. Transmission gear; 12. First hydraulic oil control line; 13. Second hydraulic oil control line; 14. Third hydraulic oil control line; 15. Electrical control circuit. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments. Figures 1 to 5 All accompanying drawings are simplified versions of embodiments and are intended solely for the purpose of clearly and concisely illustrating the embodiments of this utility model. The technical solutions shown in the drawings below are specific solutions of embodiments of this utility model and are not intended to limit the scope of the claimed utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0021] In the description of this utility model, it should be understood that the terms "upper," "lower," "inner," "outer," "left," and "right," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0022] An embodiment of the present invention provides a dual-drive wire rope winch system for use in water conservancy projects, such as... Figures 1 to 5As shown, the device includes a wire rope drum 1, a hydraulic drive unit 2, an electric drive unit 3, a central drive shaft 4, a first gear transmission mechanism 8, a safety braking device, and a hydraulic control system. The central drive shaft 4 movably passes through the wire rope drum 1 and is connected to the central drive shaft 4 via the first gear transmission mechanism 8. Both ends of the central drive shaft 4 extend out of the wire rope drum 1, forming two power input shafts. A normally open clutch 5 and a normally closed clutch 6 are connected to the two power input ends, respectively. The power output end of the hydraulic drive unit 2 is connected to the central drive shaft 4 via the normally open clutch 5, and the power output end of the electric drive unit 3 is connected to the central drive shaft 4 via the normally closed clutch 6. The hydraulic drive unit 2 and the electric drive unit 3 are respectively located at the two power input ends of the wire rope drum 1. One set of drive units can be arbitrarily selected as the main drive unit, and the other set as a backup drive unit. When hydraulic drive unit 2 is used as the main drive, normally closed clutch 6 is open, normally open clutch 5 is closed, and electric drive unit 3 does not work; when electric drive unit 3 is selected as the main drive, normally closed clutch 6 is closed, normally open clutch 5 is open, and hydraulic drive unit 2 does not work. In case of a main drive failure, another drive unit can be quickly switched to operate. The hydraulic control system provides hydraulic control for hydraulic drive unit 2, normally open clutch 5, normally closed clutch 6, and safety braking device.

[0023] In the embodiments, such as Figure 1 and Figure 2 As shown, the safety braking device includes a braking assembly 7 and a braking friction pad 10 disposed at the end of the wire rope drum 1. The braking friction pad 10 is arranged in a circle along the outer wall of the wire rope drum 1. The braking assembly 7 includes two brake discs 700, which are symmetrically disposed on both sides of the braking friction pad 10. The control end of the braking assembly 7 is connected to the control systems of the hydraulic drive device 2 and the electric drive device 3, respectively. The braking assembly 7 further includes a second oil pump 701, two sets of brake cylinders 702, and a hydraulic oil pipe 704 connecting the second oil pump 701 and the two sets of brake cylinders 702. Each set of brake cylinders 702 has a third spring 703 in its rodless chamber. One end of each third spring 703 is fixed to the inner wall of the corresponding cylinder body, and the other end is connected to the corresponding piston push plate. The two sets of brake cylinders 702 are symmetrically arranged on both sides of the brake friction pad 10. Two brake discs 700 are respectively connected to the piston ends of the two sets of brake cylinders 702. The hydraulic oil pipe 704 is connected to the rod chambers of the two sets of brake cylinders 702 through two branch pipes. The hydraulic control system is connected to the hydraulic oil pipe 704 through a third hydraulic oil control line 14, and a first hydraulic control valve 705 is provided on the hydraulic oil pipe 704. The electrical control system of the electric drive device 3 is connected to the control terminal of the second oil pump 701 through an electrical control line 15. The oil inlet of the second oil pump 701 is connected to the hydraulic control system through an oil pipe.

[0024] Under the action of the third spring 703, the two sets of brake cylinders 702 control both brake discs 700 to contact the brake friction pads 10, and close and lock the brake friction pads, at which time the wire rope drum 1 is locked. When the hydraulic control system controls the hydraulic drive device 2 to work, the hydraulic control system supplies oil to the third hydraulic oil control line 14. After the oil enters the third hydraulic oil control line 14, it enters the rodless chamber of the two sets of brake cylinders 702 through the first hydraulic control valve 705 and the hydraulic oil pipe 704. The piston push plate of the two sets of brake cylinders 702 pushes the third spring 703 to compress, thereby driving the two brake discs 700 to move and separate from the brake friction pads 10, and the drum is unlocked. When the motor drive device 3 is working, the electric control system of the electric drive device 3 controls the oil pump 701 to open through the electrical control line 15. After the oil pump 701 is opened, the hydraulic oil enters the rodless chamber of the two sets of brake cylinders 702 through the first hydraulic control valve 705 and the hydraulic oil pipe 704. The piston push plate of the two sets of brake cylinders 702 pushes the third spring 703 to compress, thereby driving the two brake discs 700 to move and separate from the brake friction pads 10, and the drum is unlocked.

[0025] The dual-drive wire rope winch system provided in the embodiment, such as Figures 1 to 5 As shown, the first gear transmission mechanism 8 adopts a first planetary gear set. The end of the wire rope drum 1 adjacent to the electric drive device 3 is open. The first gear transmission mechanism 8 is installed at the open end of the wire rope drum 1. The first planetary gear ring 800 of the first gear transmission mechanism 8 is fixedly installed on the inner wall of the wire rope drum 1. The first planetary carrier 801 and the first sun gear 802 are both fixed on the central drive shaft 4. The power output end of the electric drive device 3 is connected to the normally closed clutch 6 through the second gear transmission mechanism. The electric drive device 3 includes a first motor 300 and a second motor 301. The second gear transmission mechanism includes a second planetary gear set 9 and a transmission gear 11. The output shaft of the first motor 300 is connected to the central shaft of the sun gear of the second planetary gear set 9. The planetary carrier of the second planetary gear set 9 is connected to the central drive shaft 4. The gear ring of the second planetary gear set 9 has transmission teeth on both the inner and outer sides. The transmission gear 11 is installed on the output shaft of the second motor 301, and the transmission gear 11 meshes with the outer transmission teeth of the gear ring of the second planetary gear set 9.

[0026] In this embodiment, the second planetary gear set 9 and the planetary gear set of the first gear transmission mechanism 8 form a two-stage planetary gear system. Both the first motor 300 and the second motor 301 can be high-speed motors. The first motor 300 directly drives the central sun gear of the first-stage planetary gear to rotate. The intermediate sun gear drives the planetary gear to rotate, and the torque is transmitted to the central sun gear of the second-stage planetary gear through a clutch, driving the second-stage planetary gear to rotate. The second-stage planetary gear meshes with the inner gear ring of the drum, driving the drum to rotate and achieving the winding of the wire rope. The second motor 301 meshes with the gear ring of the first-stage planetary gear through the transmission gear 11, thereby achieving speed reduction through multi-stage gear transmission.

[0027] In the embodiments, such as Figure 5 As shown, the normally open clutch 5 includes a first hydraulic cylinder 500, a first friction plate 501, and a first friction disc 502. The first friction plate 501 is installed on the piston end of the first hydraulic cylinder 500. A first spring 503 is provided in the rod chamber of the first hydraulic cylinder 500. The first spring 503 is sleeved on the piston rod, with one end connected to the first piston push plate 504 and the other end connected to the cylinder body of the first hydraulic cylinder 500. The hydraulic control system is connected to the rodless chamber of the first hydraulic cylinder 500 through the first hydraulic oil control pipeline 12. Under normal conditions, the rodless chamber of the first hydraulic cylinder 500 is without oil, and the first friction plate 501 and the first friction disc 502 are in a separated state under the action of the first spring 503. When oil is introduced into the rodless chamber of the first hydraulic cylinder 500, the first piston push plate 504 pushes the first spring 503 in the rod chamber of the cylinder to compress, and the first friction plate 501 and the first friction disc 502 come into contact, and the normally open clutch 5 is in a working state.

[0028] In the embodiments, such as Figure 5 As shown, the normally closed clutch 6 includes a second hydraulic cylinder 600, a second friction plate 601, and a second friction disc 602. The second friction plate 601 is installed on the piston end of the second hydraulic cylinder 600. A second spring 603 is provided in the rodless chamber of the second hydraulic cylinder 600. One end of the second spring 603 is connected to the rodless end face of the second piston push plate 604, and the other end is connected to the cylinder body of the second hydraulic cylinder 600. The hydraulic control system is connected to the rod chamber of the second hydraulic cylinder 600 through the second hydraulic oil control pipeline 13. Under normal conditions, there is no oil in the rod chamber of the second hydraulic cylinder 600, and the second friction plate 601 and the second friction disc 602 are in a normally closed state under the action of the second spring 603. When oil enters the rod chamber of the second hydraulic cylinder 600, it pushes the second spring 603 in the rodless chamber of the cylinder, and the second friction plate 601 and the second friction disc 602 separate, and the normally open clutch 5 is closed.

[0029] The dual-drive wire rope winch system provided in the embodiment, such as Figures 1 to 5As shown, the hydraulic drive device 2 includes a bidirectional hydraulic motor 200 and a hydraulic oil control circuit; the hydraulic oil control circuit includes a hydraulic oil tank, a first oil pump 201, a three-position four-way directional valve 202, a throttle valve 203, a first two-position two-way directional valve 204, a second two-position two-way directional valve 205, a second hydraulic control valve 206, and hydraulic pipelines; the throttle valve 203 is located at the oil inlet of the hydraulic motor 200, the three-position four-way directional valve 202 is located at the oil outlet of the first oil pump 201, and the first two-position two-way directional valve 204 is located on the oil return pipe of the hydraulic motor 200; the hydraulic oil control circuit is the hydraulic motor 200, and the hydraulic oil control circuit is connected to the first hydraulic oil control pipeline 12, the second hydraulic oil control pipeline 13, and the third hydraulic control pipeline 14 respectively, and the normally open clutch 5, the normally closed clutch 6, and the safety brake device are supplied with hydraulic oil.

[0030] When the gate is opened, the first oil pump 201 operates, energizing the right side of the three-position four-way directional valve 202 and the first two-position two-way directional valve 204. Hydraulic oil enters the hydraulic motor 200 through the throttle valve 203 and returns to the oil tank through the first two-position two-way directional valve 204. Simultaneously, the normally open clutch 5 of the hydraulic oil control circuit closes, the normally closed clutch 6 opens, and the brake assembly 7 opens. When the gate is held, the hydraulic drive system receives no power input, the brake assembly 7 closes, and the hydraulic oil circuit maintains pressure, while the hydraulic motor 200 self-locks. When the gate is closed, the first oil pump 201 operates, energizing the left side of the three-position four-way directional valve 202, and both the first two-position two-way directional valve 204 and the second two-position two-way directional valve 205 are energized. The hydraulic oil control circuit controls the normally open clutch 5 to close, the normally closed clutch 6 to open, the brake assembly to open, the hydraulic motor 200 to reverse, and the gate to fall.

[0031] The working method of the dual-drive wire rope hoisting system is further explained below with reference to a specific embodiment. In this embodiment, when the hydraulic motor is the main drive method and the electric motor is the backup drive method, then... Figure 1 As shown, the hydraulic motor is connected to one end of the normally open clutch 5, and the electric motor is connected to one end of the normally closed clutch 6. The working mode of the dual-drive wire rope hoisting system in the above embodiment is as follows:

[0032] (1) The gate opens and closes normally, and the hydraulic motor completes the opening, holding and closing actions.

[0033] Door opening process: The first oil pump 201 is turned on, the right side of the three-position four-way solenoid directional valve 202 is energized, the second two-position two-way directional valve 205 is de-energized, and the first two-position two-way directional valve 204 is energized. The first oil pump 201 pumps out hydraulic oil, which passes through the three-position four-way directional valve 202. Part of the hydraulic oil enters the normally open closure 5 through the first hydraulic oil control line 12, pushing the normally open closure 5 to close, connecting the wire rope drum 1 to the power output shaft of the hydraulic motor 200; part of the hydraulic oil reaches the normally closed clutch 6 through the second hydraulic oil control line 13, pushing the normally closed clutch 6 to open, separating the wire rope drum 1 from the motor drive device 3; part of the hydraulic oil enters the safety braking device of the wire rope drum through the third hydraulic oil control line 14, controlling the spring compression of the braking component 7, driving the two brake discs 701 of the braking component 7 to open, and the hydraulic oil enters the hydraulic motor 200 through the throttle valve 203, driving the hydraulic motor 200 to rotate, causing the wire rope drum 1 to rotate forward, completing the door opening action.

[0034] (2) The gate is held; the first oil pump 201 is closed, the three-position four-way solenoid directional valve 202 is not energized, and the two two-position two-way directional valves are not energized. The gate is held by the wire rope, and the gate is in a balanced state under the action of the wire rope tension and its own weight. The tension of the wire rope is transmitted to the hydraulic motor 200 through the wire rope drum 1. Since the hydraulic system is in a disconnected state, the oil pressure inside the hydraulic motor 200 is balanced with the torque transmitted by the wire rope drum 1, and the gate is held. At this time, the control oil circuit of the clutch remains disengaged under the action of oil pressure; the control oil circuit of the drum safety brake is depressurized, the spring returns to its original position, and the safety brake device closes and locks to prevent the gate from sliding.

[0035] (3) Closing process: The first oil pump 201 is turned on, the left side of the three-position four-way solenoid directional valve 202 is energized, the first two-position two-way directional valve 204 is not energized, and the second two-position two-way directional valve 205 is energized. The first oil pump 201 passively discharges oil, and the hydraulic oil passes through the three-position four-way directional valve 202 and enters the hydraulic motor 200 in the reverse direction. At the same time, some hydraulic oil enters the control pipeline of the safety brake device. The safety brake device is turned on, and the wire rope drum 1 can rotate normally. The hydraulic oil passes through the hydraulic motor 200 and drives the hydraulic motor 200 to rotate in the reverse direction. The second hydraulic control valve 206 adjusts the pressure of the return oil pipeline. The clutch control pipeline controls the normally closed clutch 6 to disengage and the normally open clutch 5 to close. The wire rope drum 1 is driven by the hydraulic motor 200 to rotate slowly in the reverse direction. The wire rope is released, and the gate slowly descends.

[0036] When the main drive hydraulic drive device 2 system fails, it can be switched to the backup electric motor drive device 3. The gate completes the opening, holding, and closing actions under the action of the electric motor drive device 3.

[0037] Since the hydraulic system is not working, the normally closed clutch 6 is in the normally closed state, and the normally open clutch 5 is in the normally open state. The hydraulic drive unit 2 is not powered by the central drive shaft 4. The wire rope drum 1 is partially connected to the electric motor drive unit 3 through the first gear transmission mechanism 8 and the second planetary gear set 9. The electric motor drive unit 3 is equipped with two electric motors, and different speed motors can be selected according to the speed requirements. Taking the high-speed motor as an example;

[0038] (1) Opening process: Start the high-speed motor and open the first oil pump 701 of the safety braking device. The first oil pump 701 of the safety braking device works, the third spring 703 is compressed, and the two brake discs 700 are opened. The high-speed motor starts and drives the central sun gear of the first-stage planetary gear (second planetary gear set 9) to rotate. The intermediate sun gear drives the planetary gear to rotate. The torque is transmitted to the central sun gear of the second-stage planetary gear (first transmission mechanism 8) through the normally closed clutch 6, which drives the second-stage planetary gear to rotate. The second-stage planetary gear meshes with the inner gear ring of the wire rope drum 1, which drives the wire rope drum 1 to rotate, thereby opening the gate.

[0039] (2) Gate holding: When the gate is held, the spring of the safety braking device is reset and the two brake discs 700 are clamped; the electric drive device 3 has a reversing tendency and is in the generator braking state, generating reverse electromagnetic torque; the wire rope drum 1 is in a balanced state under the action of the brake, the reverse torque of the motor and the tension of the wire rope, and the gate is held.

[0040] (3) Closing process: The closing process is similar to the holding process. The spring part of the safety braking device is compressed, and the brake disc 700 provides a certain braking force (it can also be opened directly without providing braking force). The motor is in the generator braking state, converting mechanical energy into electrical energy to feed back to the grid or consume it on the braking resistor. The frequency converter controls the closing speed by adjusting the output frequency and torque.

[0041] If a low-speed motor is used as the power source, the basic process is the same as that of a high-speed motor.

[0042] If the gate is a dual-lifting-point type and requires two sets of drive devices to operate simultaneously, a rigid synchronous shaft should be installed. When using the backup drive method (motor drive), synchronization must be achieved through the rigid synchronous shaft. If the primary drive method (hydraulic motor drive) is used, a throttle valve must be installed to control the flow rate and achieve synchronization.

[0043] The above description is merely one embodiment of this utility model, and while it is quite specific and detailed, it should not be construed as limiting the scope of this utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the appended claims.

Claims

1. A dual-drive wire rope winch system for use in water conservancy projects, characterized in that: The wire rope hoisting system includes a wire rope drum (1), a hydraulic drive device (2), an electric drive device (3), a central drive shaft (4), a first gear transmission mechanism (8), a safety braking device, and a hydraulic control system. The central drive shaft (4) moves through the wire rope drum (1) and is connected to the central drive shaft (4) via the first gear transmission mechanism (8). The two ends of the central drive shaft (4) extend out of the wire rope drum (1) to form two power input shafts, and normally open clutches (5) and normally closed clutches (6) are connected to the two power input ends respectively. The power output end of the hydraulic drive device (2) is connected to the central drive shaft (1) via the normally open clutch (5). 4) Connection: The power output end of the electric drive device (3) is connected to the central drive shaft (4) through the normally closed clutch (6); the hydraulic control system provides hydraulic oil control for the hydraulic drive device (2), the normally open clutch (5) and the normally closed clutch (6); the safety braking device includes a braking assembly (7) and a brake friction pad (10) disposed at the end of the wire rope drum (1). The braking assembly (7) includes two brake discs (700), which are symmetrically disposed on both sides of the brake friction pad (10). The control end of the braking assembly (7) is connected to the control systems of the hydraulic drive device (2) and the electric drive device (3) respectively.

2. The dual-drive wire rope winch system for water conservancy projects according to claim 1, characterized in that: The first gear transmission mechanism (8) adopts the first planetary gear set. The end of the wire rope drum (1) near the electric drive device (3) is open. The first gear transmission mechanism (8) is installed at the open end of the wire rope drum (1). The first planetary gear ring (800) of the first gear transmission mechanism (8) is fixedly installed on the inner wall of the wire rope drum (1). The first planetary carrier (801) and the first sun gear (802) are both fixed on the central transmission shaft (4).

3. A dual-drive wire rope winch system for water conservancy projects according to claim 1 or 2, characterized in that: The power output end of the electric drive device (3) is connected to the normally closed clutch (6) through the second gear transmission mechanism; the electric drive device (3) includes a first motor (300) and a second motor (301), the second gear transmission mechanism includes a second planetary gear set (9) and a transmission gear (11), the output shaft of the first motor (300) is connected to the sun gear central shaft of the second planetary gear set (9), the planet carrier of the second planetary gear set (9) is connected to the central transmission shaft (4), the gear ring of the second planetary gear set (9) is provided with transmission teeth on both the inner and outer sides, the transmission gear (11) is installed on the output shaft of the second motor (301), and the transmission gear (11) meshes with the transmission teeth on the outer side of the gear ring of the second planetary gear set (9).

4. A dual-drive wire rope winch system for water conservancy projects according to claim 1 or 2, characterized in that: The normally open clutch (5) includes a first hydraulic cylinder (500), a first friction plate (501), and a first friction disc (502). The first friction plate (501) is installed on the piston end of the first hydraulic cylinder (500). A first spring (503) is provided in the rod chamber of the first hydraulic cylinder (500). The first spring (503) is sleeved on the piston rod, with one end connected to the first piston push plate (504) and the other end connected to the cylinder body of the first hydraulic cylinder (500). The hydraulic control system controls the first hydraulic oil through the first hydraulic oil control pipeline. (12) The rodless chamber leading to the first cylinder (500) is normally empty of oil, and the first friction plate (501) and the first friction disc (502) are in the normally open state under the action of the first spring (503). When oil enters the rodless chamber of the first cylinder (500), the first piston push plate (504) pushes the first spring (503) of the rod chamber of the cylinder to compress, and the first friction plate (501) and the first friction disc (502) come into contact, and the normally open clutch (5) is in the working state.

5. A dual-drive wire rope winch system for water conservancy projects according to claim 1 or 2, characterized in that: The normally closed clutch (6) includes a second hydraulic cylinder (600), a second friction plate (601), and a second friction disc (602). The second friction plate (601) is mounted on the piston end of the second hydraulic cylinder (600). A second spring (603) is provided in the rodless chamber of the second hydraulic cylinder (600). One end of the second spring (603) is connected to the rodless end face of the second piston push plate (604), and the other end is connected to the cylinder body of the second hydraulic cylinder (600). The hydraulic control system is connected via the second hydraulic cylinder. The oil control line (13) leads to the rod chamber of the second cylinder (600). Under normal conditions, the rod chamber of the second cylinder (600) is without oil, and the second friction plate (601) and the second friction disc (602) are normally closed under the action of the second spring (603). When oil enters the rod chamber of the second cylinder (600), it pushes the second spring (603) of the rodless chamber of the cylinder, and the second friction plate (601) and the second friction disc (602) separate, and the normally open clutch (5) is closed.

6. A dual-drive wire rope winch system for water conservancy projects according to claim 1 or 2, characterized in that: The hydraulic drive device (2) includes a bidirectional hydraulic motor (200) and a hydraulic oil control circuit; the hydraulic oil control circuit includes a hydraulic oil tank, a first oil pump (201), a three-position four-way directional valve (202), a throttle valve (203), a first two-position two-way directional valve (204), a second two-position two-way directional valve (205), a second hydraulic control valve (206), and hydraulic pipelines; the throttle valve (203) is located at the oil inlet of the hydraulic motor (200), the three-position four-way directional valve (202) is located at the oil outlet of the first oil pump (201), and the first two-position two-way directional valve (204) is located on the oil return pipe of the hydraulic motor (200); the hydraulic oil control circuit provides hydraulic oil to the hydraulic motor (200), the normally open clutch (5), the normally closed clutch (6), and the safety braking device.

7. A dual-drive wire rope winch system for water conservancy projects according to claim 1 or 2, characterized in that: The braking assembly (7) further includes a second oil pump (701), two sets of brake cylinders (702), and a hydraulic oil pipe (704) connecting the second oil pump (701) and the two sets of brake cylinders (702). Each set of brake cylinders (702) has a third spring (703) in its rodless chamber. One end of each third spring (703) is fixed to the inner wall of the corresponding cylinder body, and the other end is connected to the corresponding piston push plate. The two sets of brake cylinders (702) are symmetrically arranged on both sides of the brake friction pads (10), and the two brake discs (700) are respectively connected to the piston ends of the two sets of brake cylinders (702). The moving friction plate (10) is arranged in a circle along the outer wall of the wire rope drum (1); the hydraulic oil pipe (704) is connected to the rod chamber of the two sets of brake cylinders (702) through two branch pipes respectively; the hydraulic control system is connected to the hydraulic oil pipe (704) through the third hydraulic oil control pipeline (14), and a first hydraulic control valve (705) is provided on the hydraulic oil pipe (704); the electrical control system of the electric drive device (3) is connected to the control end of the second oil pump (701) through the electrical control line (15), and the oil inlet end of the second oil pump (701) is connected to the hydraulic control system through the oil pipe.

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