Winding-hydraulic combined hoist for hydropower station

Abstract

The winch-hydraulic combined hoist for the hydropower station comprises a winch unit, a hanging beam is connected to the lower portion of the lifting end of the winch unit, the two transverse ends of the hanging beam are jointly connected with a locking base through pin shafts, the locking base is fixed to a dam face, and a hydraulic oil cylinder with a downward output shaft is fixed to the lower portion of the bottom end of the hanging beam. The output end of the hydraulic oil cylinder is connected to the gate through a connecting rod. According to the utility model, the hoist not only can generate upward door opening tension, but also can generate larger downward door closing pressure during high-lift hoisting by using the shorter hydraulic cylinder body and the smaller diameter, so that the balance weight of a gate is effectively reduced, the requirement on the opening and closing force is reduced, and the cost of hoisting equipment and a bent frame is reduced. Besides, due to the fact that the gate is opened and closed instantly through the hydraulic oil cylinder, generated instant vibration can be transmitted to the dam face through the hanging beam and the locking base, the power effect possibly generated on the top of the bent frame is relieved, and the safety and reliability of operation of a power station are improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to hoisting machinery technical field, and specifically relates to hoist - hydraulic combined type hoist for hydropower station. BACKGROUND

[0002] The common hoist equipment of hydropower station mainly includes hoist type hoist, hydraulic type hoist and screw type hoist. The hoist type hoist relies on motor drive when opening the gate, and the steel wire rope wound on the winding drum pulls the gate up, and the gate needs to rely on the self weight or specially increase the counterweight when closing the gate. The hydraulic type hoist is driven by hydraulic pressure, and can stretch the gate upwards and provide the closing force for the gate downwards, but the length of the hydraulic cylinder increases with the increase of the lift. The screw type hoist is usually used for the opening and closing of small gate. When the gate needs to be hoisted with large closing force and the gate is hoisted on the dam surface with large lift, the hoist type hoist needs to increase too much counterweight for the gate, increases the opening and closing force, and increases the cost of the hoist equipment and bent frame. In addition, the load of the hoist type hoist suddenly changes at the moment of opening the gate, which produces large dynamic effect, and has adverse effect on the stable operation of the equipment and the safety and reliability of the bent frame. The hydraulic hoist needs the length of the cylinder to increase with the increase of the lift, which significantly increases the cost. Moreover, due to the limitation of the length-diameter ratio of the cylinder in the specification, the diameter of the cylinder also needs to increase with the increase of the length of the cylinder, which may exceed the width of the gate slot, and affects the use. SUMMARY

[0003] The utility model discloses a hoist - hydraulic combined type hoist for hydropower station, which solves the problem of high cost of existing hoist when hoisting with high lift.

[0004] The utility model discloses the technical scheme is: hoist - hydraulic combined type hoist for hydropower station, including hoist unit, the hoist unit lifting end below is connected with the hanger beam, and the transverse both ends of hanger beam are all connected with the locking seat fixed on the dam surface through the pin shaft, and the bottom end below hanger beam bottom is fixed with the hydraulic oil cylinder of output shaft downward, and the output end of hydraulic oil cylinder is connected to the gate through connecting rod.

[0005] The utility model discloses the characteristics still lie in,

[0006] The hoist unit includes a rack fixed on the bent frame, and a motor fixed on the rack. The output shaft of the motor is connected with a winding drum fixed on the rack through gear transmission. The winding drum is connected with a movable pulley at the bottom through a steel wire rope.

[0007] The movable pulley and the top end of the hanger beam are both fixed with a lifting lug plate connected through the pin shaft.

[0008] The transverse both ends of the hanger beam are both provided with an axle hole penetrating to the locking seat and inserting the pin shaft.

[0009] The locking seat is fixed on the dam surface by anchor bars.

[0010] The position sensor is fixed on one side of the hoisting beam.

[0011] The hydraulic pump station is fixed above the top end of the hoisting beam and communicates with the hydraulic cylinder through an oil pipe.

[0012] The hoisting lug plate connected through a pin shaft is fixed on the upper end of the connecting rod and the lower end of the connecting rod and the upper end of the gate.

[0013] The hoisting-lifting combined gate hoist for the hydropower station has the advantages that the hoist can generate upward gate opening pulling force and large downward gate closing pressure when hoisting at high lift, thereby effectively reducing the counterweight of the gate, reducing the requirement for hoisting force, and reducing the cost of hoisting equipment and bent frames. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 is a front view of the hoist-hydraulic combined gate hoist for the hydropower station of the utility model;

[0015] Figure 2 is a top view of the hoist-hydraulic combined gate hoist for the hydropower station of the utility model.

[0016] In the figure, 1. hoist unit, 2. hoisting beam, 3. locking seat, 4. hydraulic cylinder, 5. connecting rod, 6. hydraulic pump station, 7. position sensor, 8. dam surface, 9. gate, 10. bent frame;

[0017] 11. motor, 12. winding drum, 13. steel wire rope, 14. movable pulley, 15. rack. DETAILED DESCRIPTION

[0018] The utility model will be described in detail in combination with the drawings and specific embodiments.

[0019] Embodiment 1

[0020] The utility model provides a hoist-hydraulic combined gate hoist for a hydropower station, like Figure 1As shown, the system includes a winch unit 1, with a lifting beam 2 connected below the lifting end of the winch unit 1. Both ends of the web of the lifting beam 2 have shaft holes, which are connected to locking seats 3 (also with shaft holes) via pins. The locking seats 3 are fixed to the dam face 8 by anchor bars. A hydraulic cylinder 4 with its output shaft facing downwards is fixed below the bottom of the lifting beam 2. The upper body of the hydraulic cylinder 4 is fixed to the lower flange of the lifting beam 2. A lifting lug plate is provided at the lower output end of the hydraulic cylinder 4 and connected to the upper lifting lug plate of the connecting rod 5 via a pin. A lifting lug plate is provided at the lower end of the connecting rod 5 and connected to the upper lifting lug plate of the gate 9 via a pin. A hydraulic pump station 6, connected to the hydraulic cylinder 4 via an oil pipe, is fixed on the upper flange of the lifting beam 2, providing power for the extension and retraction of the hydraulic cylinder 4.

[0021] During the closing process of gate 9, the hoisting unit 1 first releases the lifting beam 2. The hydraulic cylinder 4, connecting rod 5, and gate 9 move downwards as the hoisting end of the hoisting unit 1 is released. When the shaft holes at both ends of the web of the lifting beam 2 are aligned with the shaft holes of the two locking seats 3, a pin is inserted to connect the lifting beam 2 and the locking seats 3. Then, the hydraulic pump station 6 drives the hydraulic cylinder 4 to extend, gradually pushing the gate 9 downwards to the closed position through the connecting rod 5.

[0022] During the gate opening process, the hydraulic pump station 6 drives the hydraulic cylinder 4 to gradually shorten, and the gate 9 is lifted and moves upward. When the hydraulic cylinder 4 is shortened to the minimum cylinder length, the pin connecting the lifting beam 2 and the locking seat 3 is removed, and the hoisting unit 1 lifts the lifting beam 2, lifting the hydraulic cylinder 4, the connecting rod 5 and the gate 9 upward until the gate 9 is completely lifted above the dam surface 8.

[0023] Through the above-described method, the hydropower station hoist-hydraulic combined hoist of this utility model combines the advantages of the hoist type hoist for high-lift lifting with the characteristics of the hydraulic type hoist for generating large closing force. When used for high-lift lifting, compared with the direct use of the hydraulic type hoist, the combined hoist of this utility model uses the hoisting unit 1 to pull the gate 9 up for most of the stroke, raising the gate 9 above the dam surface 8. During this process, the hydraulic cylinder 4 only needs to be used in the opening and closing process of the gate 9, and does not need to participate in the lifting process of the gate 9 after opening or before closing. Therefore, only when the gate 9 is opening and closing, a shorter hydraulic cylinder length and a smaller diameter are needed to generate both upward opening force and large downward closing pressure. Compared with the direct use of the hoist type hoist, the combined hoist of this utility model is implemented directly through the hydraulic part in the opening and closing process of the gate 9, so there is no need for the counterweight of the hoist, thereby effectively reducing the counterweight of the gate 9, reducing the demand for opening and closing force, and reducing the cost of lifting equipment and frame 10.

[0024] In addition, since the opening and closing of the gate 9 is accomplished by the hydraulic cylinder 4, the instantaneous vibration generated can be transmitted to the dam surface 8 through the lifting beam 2 and the locking seat 3, which reduces the dynamic effect that may be generated at the top of the frame 10 and improves the safety and reliability of the power station operation.

[0025] Example 2

[0026] This utility model provides a winch-hydraulic combined gate hoist for hydropower stations, such as... Figure 1 As shown, the system includes a winch unit 1, with a lifting beam 2 connected below the lifting end of the winch unit 1. Both ends of the web of the lifting beam 2 have shaft holes, which are connected to locking seats 3 (also with shaft holes) via pins. The locking seats 3 are fixed to the dam face 8 by anchor bars. A hydraulic cylinder 4 with its output shaft facing downwards is fixed below the bottom of the lifting beam 2. The upper body of the hydraulic cylinder 4 is fixed to the lower flange of the lifting beam 2. A lifting lug plate is provided at the lower output end of the hydraulic cylinder 4 and connected to the upper lifting lug plate of the connecting rod 5 via a pin. A lifting lug plate is provided at the lower end of the connecting rod 5 and connected to the upper lifting lug plate of the gate 9 via a pin. A hydraulic pump station 6, connected to the hydraulic cylinder 4 via an oil pipe, is fixed on the upper flange of the lifting beam 2, providing power for the extension and retraction of the hydraulic cylinder 4.

[0027] like Figure 2 As shown, the hoisting unit 1 includes a frame 15 fixed on the frame 10. A motor 11 is fixed on the frame 15. One side of the output shaft of the motor 11 is connected to a drum 12 fixed on the frame 15 via gear transmission. A movable pulley 14 connected to the bottom end of the hanging beam 2 is connected downwards to the outside of the drum 12 via a wire rope 13. The bottom end of the wire rope 13 passes around the movable pulley 14, one end is fixed to the frame 15, and the other end is wound around the drum 12. Thus, the movable pulley 14 is raised and lowered by the rotation of the drum 12 and the wire rope 13. The lower end of the movable pulley 14 is provided with a lifting lug plate, which is connected to the upper lifting lug plate of the hanging beam 2 via a pin shaft, so that the movable pulley 14 can be raised and lowered to drive the lifting beam 2 and the components below it.

[0028] During the closing process of gate 9, the motor 11 first drives the drum 12 to rotate, releasing the wire rope 13. The movable pulley 14, the lifting beam 2, the hydraulic cylinder 4, the connecting rod 5, and the gate 9 move downwards as the wire rope 13 is released. When the shaft holes at both ends of the web of the lifting beam 2 are aligned with the shaft holes of the two locking seats 3, a pin is inserted to connect the lifting beam 2 and the locking seats 3. Then, the hydraulic pump station 6 drives the hydraulic cylinder 4 to extend, gradually pushing the gate 9 downwards to the closed position through the connecting rod 5.

[0029] During the gate opening process, the hydraulic pump station 6 drives the hydraulic cylinder 4 to gradually shorten, and the gate 9 is lifted and moves upward. When the hydraulic cylinder 4 is shortened to its minimum cylinder length, the pin connecting the lifting beam 2 and the locking seat 3 is removed, the motor 11 drives the drum 12 to rotate, and the wire rope 13 is retrieved, lifting the pulley 14, the lifting beam 2, the hydraulic cylinder 4, the connecting rod 5, and the gate 9 upward until the gate 9 is completely lifted above the dam surface 8.

[0030] Through the above-described method, the hydropower station hoist-hydraulic combined hoist of this utility model combines the advantages of the hoist type hoist for high-lift lifting with the characteristics of the hydraulic type hoist for generating large closing force. When used for high-lift lifting, compared with the direct use of the hydraulic type hoist, the combined hoist of this utility model uses the hoisting unit 1 to pull the gate 9 up for most of the stroke, raising the gate 9 above the dam surface 8. During this process, the hydraulic cylinder 4 only needs to be used in the opening and closing process of the gate 9, and does not need to participate in the lifting process of the gate 9 after opening or before closing. Therefore, only when the gate 9 is opening and closing, a shorter hydraulic cylinder length and a smaller diameter are needed to generate both upward opening force and large downward closing pressure. Compared with the direct use of the hoist type hoist, the combined hoist of this utility model is implemented directly through the hydraulic part in the opening and closing process of the gate 9, so there is no need for the counterweight of the hoist, thereby effectively reducing the counterweight of the gate 9, reducing the demand for opening and closing force, and reducing the cost of lifting equipment and frame 10.

[0031] In addition, since the opening and closing of the gate 9 is accomplished by the hydraulic cylinder 4, the instantaneous vibration generated can be transmitted to the dam surface 8 through the lifting beam 2 and the locking seat 3, which reduces the dynamic effect that may be generated at the top of the frame 10 and improves the safety and reliability of the power station operation.

[0032] Example 3

[0033] This utility model provides a winch-hydraulic combined gate hoist for hydropower stations, such as... Figure 1 As shown, the system includes a winch unit 1, with a lifting beam 2 connected below the lifting end of the winch unit 1. Both ends of the web of the lifting beam 2 have shaft holes, which are connected to locking seats 3 (also with shaft holes) via pins. The locking seats 3 are fixed to the dam face 8 by anchor bars. A position sensor 7 is fixed to one side of the web of the lifting beam 2. A hydraulic cylinder 4 with its output shaft facing downwards is fixed below the bottom of the lifting beam 2. The upper body of the hydraulic cylinder 4 is fixed to the lower flange of the lifting beam 2. A lifting lug plate is provided at the lower output end of the hydraulic cylinder 4 and connected to the upper lifting lug plate of the connecting rod 5 via a pin. A lifting lug plate is provided at the lower end of the connecting rod 5 and connected to the upper lifting lug plate of the gate 9 via a pin. A hydraulic pump station 6, connected to the hydraulic cylinder 4 via an oil pipe, is fixed on the upper flange of the lifting beam 2 to provide power for the extension and retraction of the hydraulic cylinder 4.

[0034] During the closing process of gate 9, the hoisting unit 1 first releases the lifting beam 2. The hydraulic cylinder 4, connecting rod 5, and gate 9 move downwards as the hoisting end of the hoisting unit 1 is released, until the position sensor 7 detects that the lifting beam 2 has reached the designated position and issues a prompt signal. At this time, the shaft holes at both ends of the web of the lifting beam 2 are aligned with the shaft holes of the two locking seats 3, and pins are inserted to connect the lifting beam 2 and the locking seats 3. Then, the hydraulic pump station 6 drives the hydraulic cylinder 4 to extend, gradually pushing the gate 9 downwards to the closed position through the connecting rod 5.

[0035] During the gate opening process, the hydraulic pump station 6 drives the hydraulic cylinder 4 to gradually shorten, and the gate 9 is lifted and moves upward. When the hydraulic cylinder 4 is shortened to the minimum cylinder length, the pin connecting the lifting beam 2 and the locking seat 3 is removed, and the hoisting unit 1 lifts the lifting beam 2, lifting the hydraulic cylinder 4, the connecting rod 5 and the gate 9 upward until the gate 9 is completely lifted above the dam surface 8.

[0036] Through the above-described method, the hydropower station hoist-hydraulic combined hoist of this utility model combines the advantages of the hoist type hoist for high-lift lifting with the characteristics of the hydraulic type hoist for generating large closing force. When used for high-lift lifting, compared with the direct use of the hydraulic type hoist, the combined hoist of this utility model uses the hoisting unit 1 to pull the gate 9 up for most of the stroke, raising the gate 9 above the dam surface 8. During this process, the hydraulic cylinder 4 only needs to be used in the opening and closing process of the gate 9, and does not need to participate in the lifting process of the gate 9 after opening or before closing. Therefore, only when the gate 9 is opening and closing, a shorter hydraulic cylinder length and a smaller diameter are needed to generate both upward opening force and large downward closing pressure. Compared with the direct use of the hoist type hoist, the combined hoist of this utility model is implemented directly through the hydraulic part in the opening and closing process of the gate 9, so there is no need for the counterweight of the hoist, thereby effectively reducing the counterweight of the gate 9, reducing the demand for opening and closing force, and reducing the cost of lifting equipment and frame 10.

[0037] In addition, since the opening and closing of the gate 9 is accomplished by the hydraulic cylinder 4, the instantaneous vibration generated can be transmitted to the dam surface 8 through the lifting beam 2 and the locking seat 3, which reduces the dynamic effect that may be generated at the top of the frame 10 and improves the safety and reliability of the power station operation.

[0038] Example 4

[0039] This utility model provides a winch-hydraulic combined gate hoist for hydropower stations, such as... Figure 1 As shown, the system includes a winch unit 1, with a lifting beam 2 connected below the lifting end of the winch unit 1. Both ends of the web of the lifting beam 2 have shaft holes, which are connected to locking seats 3 (also with shaft holes) via pins. The locking seats 3 are fixed to the dam face 8 by anchor bars. A position sensor 7 is fixed to one side of the web of the lifting beam 2. A hydraulic cylinder 4 with its output shaft facing downwards is fixed below the bottom of the lifting beam 2. The upper body of the hydraulic cylinder 4 is fixed to the lower flange of the lifting beam 2. A lifting lug plate is provided at the lower output end of the hydraulic cylinder 4 and connected to the upper lifting lug plate of the connecting rod 5 via a pin. A lifting lug plate is provided at the lower end of the connecting rod 5 and connected to the upper lifting lug plate of the gate 9 via a pin. A hydraulic pump station 6, connected to the hydraulic cylinder 4 via an oil pipe, is fixed on the upper flange of the lifting beam 2 to provide power for the extension and retraction of the hydraulic cylinder 4.

[0040] like Figure 2As shown, the hoist unit 1 includes a rack 15 fixed on the row frame 10, a motor 11 fixed on the rack 15, a winding drum 12 fixed on the rack 15 and connected with the output shaft of the motor 11 through gear transmission, a movable pulley 14 connected with the winding drum 12 through a steel wire rope 13, and the movable pulley 14 is connected with the bottom end of the hanging beam 2, the bottom end of the steel wire rope 13 is wound around the movable pulley 14, and the other end is fixed on the rack 15 and wound around the winding drum 12, so that the winding drum 12 rotates to lift the movable pulley 14 through the steel wire rope 13, and the movable pulley 14 is connected with the hanging lug plate at the lower end and the hanging lug plate at the upper end of the hanging beam 2 through a pin shaft, so that the movable pulley 14 is lifted to lift the hanging beam 2 and the components below.

[0041] In the closing process of the gate 9, the winding drum 12 is first driven to rotate by the motor 11 to release the steel wire rope 13, and the movable pulley 14, the hanging beam 2, the hydraulic oil cylinder 4, the connecting rod 5 and the gate 9 move downward with the release of the steel wire rope 13 until the position sensor 7 detects that the hanging beam 2 reaches the specified position and sends a prompt signal, at this time, the shaft holes at both ends of the web plate of the hanging beam 2 are aligned with the shaft holes of the two locking seats 3, and the pin shaft is inserted to connect the hanging beam 2 and the locking seat 3. Then the hydraulic oil cylinder 4 is driven to elongate by the hydraulic pump station 6, and the gate 9 is gradually pushed downward to the closed position through the connecting rod 5.

[0042] In the opening process of the gate, the hydraulic oil cylinder 4 is first driven to gradually shorten by the hydraulic pump station 6, and the gate 9 is lifted and gradually moves upward. When the hydraulic oil cylinder 4 is shortened to the minimum cylinder length state, the pin shaft connecting the hanging beam 2 and the locking seat 3 is removed, the winding drum 12 is driven to rotate by the motor 11, the steel wire rope 13 is recovered, the movable pulley 14, the hanging beam 2, the hydraulic oil cylinder 4, the connecting rod 5 and the gate 9 are lifted upward, until the gate 9 is completely lifted above the dam surface 8.

[0043] By the above-mentioned manner, the combined hoist-hydraulic gate hoist of the hydropower station has the advantages of the hoist type gate hoist suitable for high-lift lifting and the hydraulic type gate hoist capable of generating large closing force, and when used for high-lift lifting, compared with directly using the hydraulic type gate hoist, the combined gate hoist of the utility model uses the hoist unit 1 to pull the gate 9 to rise by most of the stroke, so that the gate 9 is lifted above the dam surface 8, and in this process, the hydraulic oil cylinder 4 only needs to be used in the opening and closing process of the gate 9, and does not need to participate in the lifting process after the gate 9 is opened or before the gate 9 is closed, so that only a shorter hydraulic cylinder length and a smaller diameter can be used to generate upward opening pulling force and large downward closing pressure when the gate 9 is opened and closed; compared with directly using the hoist type gate hoist, the combined gate hoist of the utility model directly implements the opening and closing process of the gate 9 through the hydraulic part, so that the counterweight of the hoist type is not needed, thereby effectively reducing the counterweight of the gate 9, reducing the demand for opening and closing force, and reducing the cost of lifting equipment and the row frame 10.

[0044] Moreover, since the gate 9 is opened and closed by the hydraulic cylinder 4, the instantaneous vibration generated can be transmitted to the dam surface 8 through the hanger beam 2 and the locking seat 3, the dynamic effect on the top of the bent 10 is reduced, and the safety and reliability of the operation of the power station are improved.

[0045] Embodiment 5

[0046] The utility model provides a hoist - hydraulic combined type hoist for hydroelectric station, on the basis of embodiment 1~4, the electrical control system of hydraulic pump station 6 and hydraulic cylinder 4 can access the overall control system of power station, and the extension and retraction of hydraulic cylinder 4 can be completed by the operator in the control room.

[0047] Embodiment 6

[0048] The utility model provides a hoist - hydraulic combined type hoist for hydroelectric station, when being used in the hydroelectric station where the distance between the closed door position of the gate 9 and the dam surface 8 is far, for example, the height of the gate 9 lifted by the hoist unit 1 exceeds 5 times the height of the gate 9 lifted by the hydraulic cylinder 4, the cost reduction effect is more remarkable compared with using the hydraulic hoist alone.

Claims

1. A hoist-hydraulic combined gate hoist for a hydroelectric power plant, characterized in that, Including hoist unit (1), hoist unit (1) is connected below the lifting end with the hanging beam (2), the transverse both ends of hanging beam (2) are all connected with the locking seat (3) fixed on the dam face (8) through the pin shaft, the bottom end of hanging beam (2) is fixed with the output shaft downward hydraulic oil cylinder (4), the output end of hydraulic oil cylinder (4) is connected to the gate (9) through connecting rod (5).

2. The hoist-hydraulic combined gate hoist for a hydroelectric power plant according to claim 1, wherein The hoist unit (1) includes the rack (15) fixed on the row frame (10), the rack (15) is fixed with the motor (11), the output shaft side of motor (11) is connected with the winding drum (12) fixed on the rack (15) through gear transmission, the winding drum (12) is connected with the movable pulley (14) with the bottom end connected with the hanging beam (2) through the steel wire rope (13) outside.

3. The hoist-hydraulic combined gate hoist for a hydroelectric power plant according to claim 2, wherein The bottom end of movable pulley (14) and the top end of hanging beam (2) are both fixed with the hanger plate connected through the pin shaft.

4. The hoist-hydraulic combined gate hoist for a hydroelectric power plant according to claim 1, wherein The transverse both ends of hanging beam (2) are all set up the shaft hole that is inserted into the pin shaft and is inserted into the locking seat (3).

5. The hoist-hydraulic combined gate hoist for a hydroelectric power plant according to claim 1, wherein The locking seat (3) is fixed on the dam face (8) through the anchor bar.

6. The hoist-hydraulic combined gate hoist for a hydroelectric power plant according to claim 1, wherein One side of the hanging beam (2) is fixed with the position sensor (7).

7. The hoist-hydraulic combined gate hoist for a hydroelectric power plant according to claim 1, wherein The top end of the hanging beam (2) is fixed with the hydraulic pump station (6) communicated with the hydraulic oil cylinder (4) through the oil pipe above.

8. The hoist-hydraulic combined gate hoist for a hydroelectric power plant according to claim 1, wherein The lower end of the hydraulic oil cylinder (4) and the upper end of the connecting rod (5), the lower end of the connecting rod (5) and the upper end of the gate (9) are all fixed with the hanger plate connected through the pin shaft.

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