CN100501110C - Lifting platform power synchronous lifting device - Google Patents

Abstract

The invention relates to a power synchronous lifting device for a lifting platform, and relates to the technical field of lifts and automobile three-dimensional parking garages. Including motor, reduction box, transmission shaft, there are at least 3 transmission shafts, each transmission shaft is equipped with motor, braking device, reducer, connected and supported by coupling or universal joint and bearing seat, all transmission The output ends of the reducer on the shaft are all connected with the synchronous mechanism, and the other ends of all transmission shafts are connected with the chain and the lifting platform through the reducer and the sprocket. Its characteristics are: synchronous power, relatively balanced force, equal transmission torque and speed, stable lifting of the platform, simple and reasonable structure, compact and material-saving, especially when one of the motors stops working due to failure, it will not affect the normal operation of the whole machine. Strong reliability and safety, improve work efficiency. It has a wide range of uses, and can be widely used on various lifting platforms such as lifting platforms and elevators, and is especially suitable for use on lifting platforms of three-dimensional parking garages.

Description

Lifting platform power synchronous lifting device

technical field

The invention relates to the technical field of elevators and automobile three-dimensional parking garages.

Background technique

At present, the power synchronous lifting device of the lifting platform of the automobile three-dimensional parking garage is driven by a large motor through a reduction box and a large bevel tooth plate, and the large bevel tooth plate drives each drive shaft, sprocket, and chain through the reversing of each bevel gear. transmission. This kind of lifting device transmits large torque and large power, and the required shaft is thick and heavy. Its structure and force design are unreasonable, and the speed is also low. Especially when the motor stops rotating due to failure, the whole machine stops immediately. Work, affect production, reduce work efficiency, and bring great inconvenience to work and maintenance.

Contents of the invention

The object of the present invention is to provide a power synchronous lifting device for lifting platform, which is characterized by: synchronous power, balanced force, equal transmission torque and speed, stable platform lifting, simple and reasonable structure, especially when a certain motor stops due to failure When working, it does not affect the normal operation of the whole machine, has high reliability and safety, and improves work efficiency. It has a wide range of uses and can be widely used on various lifting platforms such as lifting platforms and elevators, and is especially suitable for use on lifting platforms of three-dimensional parking garages.

The main technical solution of the present invention is: a power synchronous lifting device for a lifting platform, including a motor, a reduction box, a transmission shaft, a transmission sprocket and a chain, and is characterized in that there are at least three transmission shafts, and each transmission shaft is equipped with There are motors, braking devices, and reducers, which are connected and supported by couplings or universal joints and bearing seats. The output ends of the reducers on all transmission shafts are connected with the synchronous mechanism, and the other ends of all transmission shafts pass through the reducer. , The sprocket is connected with the chain and the lifting platform.

Described power transmission shaft is preferably 4, 6.

The above electric motor and brake device are preferably brake motors.

It is better to be provided with 2 electric motors on each transmission shaft, all of which are brake motors. Or there are more than 2 brake motors.

Said reducer is preferably a cycloidal pinwheel reducer. Its transmission is relatively large. It can also be replaced by other reducers with higher transmission ratios.

Said reducer is preferably a worm gear reducer, because it has a self-locking function, which is more stable and safe. The worm is coaxial with the transmission shaft, and the worm gear is coaxial with the driving sprocket. Gear reducers and the like can also be used.

The power synchronous lifting device of the above-mentioned lifting platform can also be equipped with a secondary balance and stability safety chain for synchronous lifting. The two ends of the chain are respectively fixed on the upper end and the lower end of the fixed frame. towards the sprocket. It can also be equipped with a counterweight mechanism in the form of lifting platform pulleys.

In order to reduce the output power, a counterweight mechanism in the form of a lifting platform pulley can also be provided. One end of the lifting platform counterweight rope is connected to the platform through the rope of the fixed pulley, and the other end is connected to the counterweight (several movable pulleys can be added). In contrast, this The applicant has applied for a patent.

The structure of the synchronous mechanism is as follows: each transmission shaft end is connected with a small bevel gear, and the small bevel gears on all transmission shafts are meshed with the same large bevel gear. It is especially suitable for the synchronous connection of more than 3 or 4 drive shafts. or for other synchronization mechanisms.

The large bevel gear of the synchronous mechanism can also be connected with a speed reducer and a motor, and the speed reducer is preferably a cycloidal pin wheel speed reducer, which can increase power and synchronize.

The characteristics of the present invention are: synchronous power, balanced force, equal transmission torque and speed, stable lifting of the platform, simple and reasonable structure, compact and material-saving, especially when one of the motors stops working due to failure, it will not affect the whole machine Normal work, strong reliability and safety, improve work efficiency. The problem of further improving the safety and stability of the lifting platform is solved, and the production efficiency is improved. The invention has wide application and can be widely used on various lifting platforms such as lifting platforms and elevators, and is especially suitable for use on lifting platforms of three-dimensional parking garages.

The following examples are described in detail, but not as a limitation of the present invention.

Description of drawings

Fig. 1 is a top view structural diagram of the present invention.

Fig. 2 is an enlarged schematic diagram of the structure of part number 3 of the transmission shaft in Fig. 1 .

Fig. 3 is a schematic diagram of a partial structure along the direction A of Fig. 1 .

In Figures 1 to 3, 1, 2, 3, 4 are transmission shafts, 5 is a large bevel gear, 6 is a small bevel gear, 7 is a universal joint, 8 is a bearing seat, 9 is a reducer, and 10 is a shaft Device, 11 is motor, and 12 is sprocket wheel, and 13 is chain, and 14 is speed reducer, and 15 is sprocket wheel, and 16 is reversing sprocket wheel, and 17 is secondary balance stable safety chain.

Detailed ways

Referring to Figures 1 to 7, a power synchronous lifting device for an automobile lifting platform has four drive shafts 1, 2, 3, and 4, and each drive shaft 1, 2, 3, and 4 is equipped with two motors 11 , all are brake motors, and the reducer 9 is a cycloidal pinwheel reducer (with a large reduction ratio), equipped with a bearing seat 8, a shaft coupling 10, and a universal joint 7, and all transmission shafts 1, 2, 3 The output ends of the cycloid reducer 9 of , 4 are all connected with the synchronous mechanism, the structure of this synchronous mechanism: each transmission shaft 1, 2, 3, 4 ends are all connected with a small bevel gear 6, all small bevel gears 6 are Mesh with the same large bevel gear 5. The other ends of all transmission shafts 1, 2, 3, 4 are connected with chain 13 by speed reducer 1 (worm gear reducer) and sprocket wheel 12, and worm screw and transmission shaft are coaxial, and worm gear and sprocket wheel 17 are coaxial. And be provided with synchronous lifting secondary balance stable safety chain 17, this chain 17 two ends are respectively fixed on the upper end and the lower end of fixed frame, and lifting platform is provided with sprocket wheel 15 and chain reversing sprocket wheel 16. And be provided with lifting platform counterweight mechanism, promptly lifting platform counterweight rope links to each other with platform through the rope one end of fixed pulley, and the other end links to each other with counterweight, also can add several movable pulleys to reduce lifting force (not shown in the figure). Trial works great.

Claims (9)

1. A power synchronous lifting device for a lifting platform, including a motor, a reduction box, a transmission shaft, a transmission sprocket and a chain, characterized in that there are at least three transmission shafts (1, 2, 3, 4), and each transmission shaft (1, 2, 3, 4) are equipped with motors (11), braking devices, reducers (9), connected and supported by couplings (10) or universal joints (7) and bearing housings (8) , the output ends of the speed reducers (9) on all transmission shafts (1, 2, 3, 4) are all connected with the synchronous mechanism, and the other ends of all transmission shafts (1, 2, 3, 4) are passed through the speed reducer (14 ), sprocket wheel (12) links to each other with chain (13) and lifting platform. 2. The power synchronous lifting device of the lifting platform according to claim 1, characterized in that there are four transmission shafts (1, 2, 3, 4). 3. The power synchronous lifting device of the lifting platform according to claim 1, characterized in that the reducer (9) is a cycloidal pinwheel reducer. 4. The power synchronous lifting device of the lifting platform according to claim 1, characterized in that the motor (11) and the brake device use a brake motor that integrates the motor and the brake device. 5. The power synchronous lifting device of the lifting platform according to claim 4, characterized in that each of the transmission shafts (1, 2, 3, 4) is provided with two motors (11). 6. The power synchronous lifting device of the lifting platform according to claim 1, characterized in that the reducer (14) is a worm gear reducer, the worm and the transmission shaft (1, 2, 3, 4) are coaxial, and the worm gear Coaxial with sprocket (12). 7. The power synchronous lifting device of the lifting platform according to claim 1, characterized in that the lifting platform is provided with a synchronous lifting secondary balance and stability safety chain (17), and the two ends of the secondary balance and stability safety chain (17) are respectively Fixed on the upper and lower ends of the fixed frame, the middle part of the chain is provided with a sprocket (15) and a chain reversing sprocket (16) fixed on the lifting platform that cooperate with it; and a counterweight mechanism in the form of a lifting platform pulley. 8. The lifting platform power synchronous lifting device according to claim 1, 2, 3, 4, 5, 6 or 7, characterized in that the structure of the synchronous mechanism is: each transmission shaft (1, 2, 3 , 4) ends are connected with a small bevel gear (6), and the small bevel gears (6) on all power transmission shafts (1, 2, 3, 4) are all meshed with the same large bevel gear (5). 9. The power synchronous lifting device of the lifting platform according to claim 8, characterized in that the large bevel gear (5) of the synchronization mechanism is connected with the cycloidal pin gear reducer and the motor.

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