Novel hydraulic hoist

Abstract

The present application relates to the technical field of hoisting equipment, in particular to a new hydraulic hoist, which can realize the functions of brake release and lifting and lowering at the same time, can realize manual brake release in emergency, let the driving system run simply, meet the temporary needs, realize double insurance; including brake, control valve group, hydraulic motor, hoisting device, speed reducer, bolt six, bolt seven, elastic pad eight, flat pad nine, screw ten, bolt eleven, elastic pad twelve and flat pad thirteen, the brake is connected with the hydraulic motor through the bolt six; the hydraulic motor and the hoisting device are fixedly connected through the bolt seven, the elastic pad eight and the flat pad nine; the control valve group is connected with the hydraulic motor through the screw ten; the speed reducer and the hoisting device are fixedly connected through the bolt eleven, the elastic pad twelve and the flat pad thirteen.

Description

Technical Field

[0001] This invention relates to the technical field of lifting equipment, and in particular to a novel hydraulic hoist. Background Technology

[0002] Hydraulic hoists are driven by a hydraulic motor, which in turn drives a sprocket to rotate, thus lifting and lowering the chain. They are widely used in various industries, including ports, mines, and metallurgical plants, in environments with flammable, explosive, high-temperature, high-dust, and highly corrosive conditions. Hydraulic hoists are indispensable auxiliary transportation equipment for enterprises to ensure safe production, improve efficiency, and reduce costs.

[0003] Currently used hydraulic hoists are typically driven by cycloidal motors, with a brake installed at the motor output end. However, due to the complexity of the mechanism, inconvenient operation, high noise from the cycloidal motor, and difficulty in maintenance, dual output cannot be achieved, and the simultaneous manual release of the brake and lowering / lifting functions cannot be realized, resulting in poor reliability. Summary of the Invention

[0004] To solve the above-mentioned technical problems, the present invention provides a new type of hydraulic hoist that can simultaneously realize the functions of releasing the brake and lifting and lowering. In emergency situations, the brake can be manually released, allowing the drive system to operate easily, meeting temporary needs, and achieving double insurance.

[0005] The present invention discloses a novel hydraulic hoist, comprising a brake, a control valve assembly, a hydraulic motor, a lifting device, a reducer, bolts six and seven, spring washers eight and nine, screws ten and eleven, spring washers twelve and thirteen. The brake is connected to the hydraulic motor via bolt six; the hydraulic motor is fixedly connected to the lifting device via bolt seven, spring washers eight and nine; the control valve assembly is connected to the hydraulic motor via screw ten; and the reducer is fixedly connected to the lifting device via bolt eleven, spring washers twelve and thirteen.

[0006] This invention discloses a novel hydraulic hoist, wherein the hydraulic motor includes a rotor, a stator, an output shaft, a piston assembly, a distribution plate, a distribution plate seat, an oil seal seat, an oil seal 38, a bearing 39, a screw 30, and a screw 31. The oil seal 38 is installed in the oil seal hole of the oil seal seat. The inner ring of the bearing 39 is installed on the outer circle of the rotor, and the outer ring is connected to the stator. The oil seal seat and the stator are connected and locked by the screw 30. The stator has an inner curved structure and is connected and locked to the distribution plate seat by the screw 31. The output shaft of the hydraulic motor is connected to the rotor by a spline. The piston assembly is installed in the piston hole of the rotor, with the other end protruding from the rotor and contacting the curved surface of the stator. The distribution plate is installed in the distribution plate seat.

[0007] This invention discloses a novel hydraulic hoist, wherein the brake comprises a brake shaft, a rolling bearing, a screw 13, a brake seat, a retaining ring 15, a disc spring, a brake piston, a piston seat, a screw 19, a static friction plate, a dynamic friction plate, a transition shaft, a bearing 13, a manual release shaft, a push rod, an oil seal 16, a limit rod, a retaining ring 18, a bearing 19, and a brake connector. The outer circle of the brake shaft is connected to the inner ring of the rolling bearing, the outer ring of the rolling bearing is installed in the bearing hole of the brake seat, the retaining ring 15 is installed on the brake seat to fix the axial position of the bearing, the brake piston is installed in the piston hole of the piston seat, and the disc spring is installed between the brake piston and the brake connector. Screw 13 connects and locks the brake seat and piston seat in the groove between the seats. Static friction plates and dynamic friction plates are alternately installed in the piston seat. The internal spline of the piston seat is connected to the external spline of the static friction plate. The internal spline of the dynamic friction plate is connected to the external spline of the transition shaft. Bearing 13, bearing 19 and retaining ring are installed on the outer circle of the manual release shaft. The retaining ring fixes the axial position of the bearing. Bearing 13 is a one-way bearing. The inner ring is fixed on the outer circle of the manual release shaft. The outer ring of bearing 13 is installed in the inner hole of the transition shaft. The outer ring rotates in one direction. One end of the brake shaft is splined and connected to the manual release shaft. The other end passes through the distribution plate of the hydraulic motor and is connected to the internal spline of the rotor.

[0008] The present invention discloses a novel hydraulic hoist, wherein the control valve group includes a valve group inlet, a valve group outlet, a brake port, a relief valve, and a balance valve. The control valve group is located above the hydraulic motor and has a valve group inlet, a valve group outlet, a relief valve, a balance valve, and a brake port. The valve group inlet and outlet of the control valve are connected to the inlet and outlet of the hydraulic motor, and the brake port of the control valve is connected to the brake release port on the hydraulic motor.

[0009] Compared with the prior art, the beneficial effects of the present invention are as follows: the output shaft of the hydraulic motor is connected to the input shaft of the reducer by a spline, the output shaft of the reducer and the sprocket of the lifting assembly are connected by a spline to transmit torque, the hydraulic motor provides power to drive the input shaft of the reducer to rotate, and transmits the power to the sprocket through the output shaft of the reducer. The rotation of the sprocket drives the chain to run, thereby realizing the lifting and lowering of materials. Attached Figure Description

[0010] Figure 1 Front view of a hydraulic hoist;

[0011] Figure 2 Left view of a hydraulic hoist;

[0012] Figure 3 Top view of a hydraulic hoist;

[0013] Figure 4 Cross-sectional view of hydraulic motor and brake;

[0014] Figure 5 Stator diagram;

[0015] The following labels are used in the attached diagram: 1. Brake; 2. Control valve assembly; 3. Hydraulic motor; 4. Lifting device; 5. Reducer; 6. Bolt 6; 7. Bolt 7; 8. Spring washer 8; 9. Flat washer 9; 10. Screw 10; 11. Bolt 11; 12. Spring washer 12; 13. Flat washer 13.

[0016] 3-1. Rotor; 3-2. Stator; 3-3. Output shaft; 3-4. Piston assembly; 3-5. Distribution plate; 3-6. Distribution plate seat; 3-7. Oil seal seat; 3-8. Oil seal 38; 3-9. Bearing 39; 3-10. Screw 30; 3-11. Screw 31.

[0017] 1-1. Brake shaft; 1-2. Rolling bearing; 1-3. Screw 13; 1-4. Brake seat; 1-5. Retaining ring 15; 1-6. Disc spring; 1-7. Brake piston; 1-8. Piston seat; 1-9. Screw 19; 1-10. Static friction plate; 1-11. Dynamic friction plate; 1-12. Transition shaft; 1-13. Bearing 13; 1-14. Manual release shaft; 1-15. Push rod; 1-16. Oil seal 16; 1-17. Limit rod; 1-18. Retaining ring 18; 1-19. Bearing 19; 1-20. Brake connector.

[0018] 20. Valve assembly oil inlet; 21. Valve assembly oil outlet; 22. Brake oil port; 29. ​​Balance valve; 30. Relief valve. Implementation

[0019] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.

[0020] like Figures 1 to 5 As shown, a novel hydraulic hoist of the present invention includes a brake 1, a control valve assembly 2, a hydraulic motor 3, a lifting device 4, a reducer 5, bolts 6, 7, 8, 9, 10, 11, 12, and 13. The brake 1 is connected to the hydraulic motor via bolt 6; the hydraulic motor 3 is fixedly connected to the lifting device 4 via bolt 7, 8, and 9; the control valve assembly 2 is connected to the hydraulic motor 3 via screw 10; the reducer 5 is fixedly connected to the lifting device 4 via bolt 11, 12, and 13; the output shaft of the hydraulic motor is connected to the input shaft of the reducer via a spline; the output shaft of the reducer and the sprocket of the lifting assembly are connected via a spline to transmit torque. The hydraulic motor provides power to drive the input shaft of the reducer to rotate, which is transmitted to the sprocket through the output shaft of the reducer. The rotation of the sprocket drives the chain to rotate, thereby realizing the lifting and lowering of materials.

[0021] This invention discloses a novel hydraulic hoist. The hydraulic motor 3 includes a rotor 3-1, a stator 3-2, an output shaft 3-3, a piston assembly 3-4, a distribution plate 3-5, a distribution plate seat 3-6, an oil seal seat 3-7, an oil seal 3-8, a bearing 3-9, screws 3-10 and 3-11. The oil seal 3-8 is installed in the oil seal hole of the oil seal seat 3-7. The inner ring of the bearing 3-9 is installed on the outer circle of the rotor 3-1, and the outer ring is connected to the stator. The oil seal seat 3-7 and the stator 3-2 are connected and locked by screws 3-10. The stator 3-2 has an inner curved structure and is connected and locked to the distribution plate seat 3-6 by screws 3-11. The output shaft 3-3 of the hydraulic motor is connected to the rotor 3-1 via a spline. The piston assembly 3-2 is installed in the piston hole of the rotor 3-1. One end protrudes from the rotor and contacts the curved surface of the stator. The distribution plate 3-5 is installed inside the distribution plate seat 3-6. When the hydraulic motor is working, the piston assembly 3-2 reciprocates linearly within the piston hole of the rotor 3-1 and also rotates around the axis of the rotor 3-1. Its working principle is as follows: When the hydraulic oil of the hydraulic motor enters the rotor 3-1 of the torque part of the hydraulic device through the distribution plate 3-6, it pushes the piston assembly 3-4 in the inner cavity to move linearly. When the piston assembly 3-4 hits the curved surface of the stator 3-2, it is subjected to the reaction force given by the curved surface. One component of this force causes the piston assembly 3-4 to move tangentially along the curve of the stator 3-2, thereby driving the rotor 3-1 to rotate. The rotor drives the output shaft 3-3 to rotate, transmitting torque.

[0022] This invention discloses a novel hydraulic hoist, wherein the brake 1 comprises a brake shaft 1-1, a rolling bearing 1-2, a screw 1-3 1-3, a brake seat 1-4, a retaining ring 1-5 1-6, a disc spring 1-6, a brake piston 1-7, a piston seat 1-8, a screw 1-9, a static friction plate 1-10, a dynamic friction plate 1-11, a transition shaft 1-12, a bearing 1-13 1-13, a manual release shaft 1-14, a push rod 1-15, an oil seal 1-16, a limit rod 1-17, a retaining ring 18 1-18, a bearing 19 1-19, and a brake connector 1-20. The outer circle of the brake shaft 1-1 is connected to the inner ring of the rolling bearing 1-2, and the outer ring of the rolling bearing 1-2 is installed in the bearing hole of the brake seat 1-4. The retaining ring 1-1... -5 is installed on the brake seat 1-4, fixing the axial position of the bearing 1-3. The brake piston 1-7 is installed in the piston hole of the piston seat 1-8. The disc spring 1-6 is installed in the groove between the brake piston 1-7 and the brake seat 1-4. Screw 1-3 connects and locks the brake seat 1-4 and the piston seat 1-8. The static friction plate 1-10 and the dynamic friction plate 1-11 are alternately installed in the piston seat 1-8. The internal spline of the piston seat is connected to the external spline of the static friction plate. The internal spline of the dynamic friction plate 1-11 is connected to the external spline of the transition shaft 1-12. The manual release shaft 1-14 has bearing 1-13, bearing 19, and retaining ring 1-18 installed on its outer circle. The retaining ring 1-18 fixes the shaft of bearing 19, which is 1-19. In the directional position, the inner ring of bearing 131-13 is fixed on the outer circle of the manual release shaft 1-14, and the outer ring of bearing 131-13 is installed in the inner hole of the transition shaft 1-12. The outer ring rotates in one direction. One end of the brake shaft 1-1 is splined and connected to the manual release shaft 1-14, and the other end passes through the distributor plate of the hydraulic motor and is connected to the inner spline of the rotor. When the hydraulic motor is working, brake oil enters the piston A chamber through the brake connector 1-20. When the pressure is greater than the disc spring force, it pushes the brake piston 1-7 to move axially, causing the moving and stationary friction plates to separate from each other and release the brake. When the hydraulic motor stops working, there is no oil input to the brake port, the disc spring returns to its original position and pushes the brake piston 1-7 to move axially, causing the moving and stationary friction plates to stick together. When the mutual compression friction brake is activated, the hydraulic motor output shaft stops rotating, and the hydraulic hoist stops rising or falling. The manual release function is integrated on one side of the hydraulic hoist. When the oil supply is cut off, rotating the control valve B opens the hydraulic motor's inlet and outlet ports. Rotating the manual release shaft C of the hydraulic motor brake counterclockwise simultaneously pushes the push rod 1-15 down, overcoming the resistance of the disc spring 1-6 and causing the brake piston 1-7 to move axially. The friction plates loosen, and the moving and stationary friction plates separate, releasing the brake. Continuing to rotate the connecting sleeve 1-14, the internal spline of the connecting sleeve 1-14 drives the brake shaft to rotate clockwise, sequentially transmitting torque to the rotor—motor output shaft—reducer input shaft—reducer output shaft—sprocket shaft, thus lowering the load.

[0023] This invention discloses a novel hydraulic hoist, wherein the control valve assembly 2 includes a valve assembly inlet 20, a valve assembly outlet 21, a brake port 22, a relief valve 30, and a balance valve 29. The control valve assembly 2 is located above the hydraulic motor and has a valve assembly inlet 20, a valve assembly outlet 21, a relief valve 30, a balance valve 29, and a brake port 22. The valve assembly inlet 20 and outlet 21 of the control valve are connected to the inlet and outlet ports of the hydraulic motor, and the brake port of the control valve is connected to the brake release port on the hydraulic motor. This connects the control valve assembly to the hydraulic motor. The valve assembly relief valve limits the system pressure and provides overload protection, while the balance valve prevents stalling during descent.

[0024] This invention discloses a novel hydraulic hoist. During operation, when the hydraulic motor is running, the piston assembly 3-2 reciprocates linearly within the piston hole of the rotor 3-1 and simultaneously rotates around the axis of the rotor 3-1. The working principle is as follows: When hydraulic oil from the hydraulic motor enters the rotor 3-1 (torque section) of the hydraulic device through the distributor plate 3-6, it pushes the piston assembly 3-4 within the inner cavity to move linearly. When the piston assembly 3-4 abuts against the curved surface of the stator 3-2, it receives a reaction force from the curved surface. A component of this force causes the piston assembly 3-4 to advance tangentially along the curve of the stator 3-2, thereby driving the rotor 3-1 to rotate. The rotor drives the output shaft 3-3 to rotate, transmitting torque. Then, brake oil enters the piston A chamber through the brake connector 1-20. When the pressure exceeds the disc spring force, it pushes the brake piston 1-7 to move axially, causing the moving and stationary friction plates to disengage and stop interacting, thus releasing the brake. When the hydraulic motor stops working, there is no oil input to the brake port. The disc spring resets and pushes the brake piston 1-7 to move axially. The moving and stationary friction plates are pressed together and squeezed against each other to activate the brake. At the same time, the output shaft of the hydraulic motor stops rotating, and the hydraulic hoist stops rising or falling. The manual release function is integrated on one side of the hydraulic hoist. When the oil source is cut off, the rotary valve B of the control valve is rotated to connect the oil inlet and outlet of the hydraulic motor. When the manual release shaft C of the hydraulic motor brake is rotated counterclockwise, the push rod 1-15 is pushed down, overcoming the resistance of the disc spring 1-6 and causing the brake piston 1-7 to move axially. The friction plates loosen, and the moving and stationary friction plates separate, thus releasing the brake. Continue to rotate the connecting sleeve 1-14. The internal spline of the connecting sleeve 1-14 drives the brake shaft to rotate clockwise, transmitting torque sequentially to the rotor—motor output shaft—reducer input shaft—reducer output shaft—sprocket shaft, which can then lower the load.

[0025] The present invention discloses a novel hydraulic hoist, the installation method, connection method, or setting method of which are all common mechanical methods. As long as the beneficial effect can be achieved, it can be implemented. The reducer 5, overflow valve 30, and balance valve 29 of the novel hydraulic hoist of the present invention are commercially available. Technical personnel in this industry only need to install and operate them according to the accompanying instruction manual.

[0026] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A novel hydraulic hoist, characterized in that, The device includes a brake (1), a control valve assembly (2), a hydraulic motor (3), a lifting device (4), a reducer (5), bolts six (6), seven (7), spring washers eight (8), flat washers nine (9), screws ten (10), bolts eleven (11), spring washers twelve (12), and flat washers thirteen (13). The brake (1) is connected to the hydraulic motor via bolts six (6); the hydraulic motor (3) is fixedly connected to the lifting device (4) via bolts seven (7), spring washers eight (8), and flat washers nine (9); the control valve assembly (2) is connected to the hydraulic motor (3) via screws ten (10); and the reducer (5) is fixedly connected to the lifting device (4) via bolts eleven (11), spring washers twelve (12), and flat washers thirteen (13). The hydraulic motor (3) is an internal curve radial piston hydraulic motor, including a rotor (3-1), a stator (3-2), an output shaft (3-3), a piston assembly (3-4), a distributor plate (3-5), a distributor plate seat (3-6), an oil seal seat (3-7), an oil seal 38 (3-8), a bearing 39 (3-9), a screw 30 (3-10), and a screw 31 (3-11). The oil seal 38 (3-8) is installed in the oil seal hole of the oil seal seat (3-7), and the inner ring of the bearing 39 (3-9) is installed on the outer ring of the rotor (3-1). On the circle, the outer ring is connected to the stator, the oil seal seat (3-7) and the stator (3-2) are connected and locked by screw thirty (3-10), the stator (3-2) has an inner curve structure, and is connected and locked to the distribution plate seat (3-6) by screw thirty-one (3-11), the output shaft (3-3) of the hydraulic motor is connected to the rotor (3-1) by spline, the piston assembly (3-4) is installed in the piston hole of the rotor (3-1), the other end protrudes from the rotor and contacts the curved surface of the stator, and the distribution plate (3-5) is installed in the distribution plate seat (3-6); The brake (1) includes a brake shaft (1-1), a rolling bearing (1-2), a screw (1-3), a brake seat (1-4), a retaining ring (1-5), a disc spring (1-6), a brake piston (1-7), a piston seat (1-8), a screw (1-9), a static friction plate (1-10), a dynamic friction plate (1-11), a transition shaft (1-12), a bearing (1-13), a manual release shaft (1-14), a push rod (1-15), an oil seal (1-16), and a limit rod (1-17). 1-17), retaining ring 18 (1-18), bearing 19 (1-19), and brake connector (1-20). The outer circle of the brake shaft (1-1) is connected to the inner ring of the rolling bearing (1-2). The outer ring of the rolling bearing (1-2) is installed in the bearing hole of the brake seat (1-4). Retaining ring 15 (1-5) is installed on the brake seat (1-4) to fix the axial position of the rolling bearing (1-2). The brake piston (1-7) is installed in the piston hole of the piston seat (1-8). The disc spring (1-6) is installed on the brake piston. (1-7) In the groove between the brake seat (1-4) and the brake seat (1-7), screw 1-3 (1-3) connects and locks the brake seat (1-4) and the piston seat (1-8). The static friction plate (1-10) and the dynamic friction plate (1-11) are alternately installed in the piston seat (1-8). The internal spline of the piston seat is connected to the external spline of the static friction plate. The internal spline of the dynamic friction plate (1-11) is connected to the external spline of the transition shaft (1-12). Bearing 13 (1-13) and bearing 19 (1-19) are installed on the outer circle of the manual release shaft (1-14). The bearing 18 (1-18) and retaining ring 18 (1-18) fix the axial position of bearing 19 (1-19). Bearing 13 (1-13) is a one-way bearing. The inner ring is fixed on the outer circle of the manual release shaft (1-14). The outer ring of bearing 13 (1-13) is installed in the inner hole of the transition shaft (1-12). The outer ring of bearing 13 (1-13) rotates in one direction. One end of the brake shaft (1-1) is splined and connected to the manual release shaft (1-14). The other end passes through the distribution plate of the hydraulic motor and is connected to the inner spline of the rotor.

2. The novel hydraulic hoist as described in claim 1, characterized in that, The control valve group (2) includes a valve group inlet (20), a valve group outlet (21), a brake port (22), a relief valve (30), and a balance valve (29). The control valve group (2) is located above the hydraulic motor and has a valve group inlet (20), a valve group outlet (21), a relief valve (30), a balance valve (29), and a brake port (22). The valve group inlet (20) and valve group outlet (21) of the control valve are connected to the inlet and outlet ports of the hydraulic motor, and the brake port of the control valve is connected to the brake release port on the hydraulic motor.

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