JPH036113B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a winch, and more specifically, a winch used for hoisting or luffing equipment such as a cargo handling crane, or a winch for other general use. It is.

2. Description of the Related Art A conventional winch has a structure as shown in FIG. 2 or 3, for example. In Fig. 2, 21 is a drive motor, 22 is a reduction gear, 2
3 is a wire winding drum, and 24 is a brake.
In addition, in FIG. 3, 25 is a drive motor, 26
is a cyclo reducer, and 27 is a wire winding drum.

Problems to be Solved by the Invention The conventional winch shown in FIG. 2 has the problem that the installation space is large, and the reduction gear
Since the reduction ratio switching in No. 2 is manual and the speed ratio is generally two stages, there is also the problem that the speed control range is small. There is also the problem that an electric switching type is expensive, and if an electromagnetic clutch is built in to adjust the speed ratio, it is also expensive. Furthermore, the conventional winch shown in FIG.
Although it is compact, since the speed ratio of the cyclo reducer 26 is one stage, there is a problem that the speed control range is extremely small, and if the drive motor 25 is a motor with a brake, it becomes difficult to adjust the brake torque. Therefore, if a brake or the like is provided adjacent to the wire winding drum 27, there is a problem in that a large brake torque is required. The present invention attempts to solve these problems. That is, an object of the present invention is to provide a winch that can be easily miniaturized, reduce costs, and expand the speed control range.

Measures to solve the problem: A continuously variable transmission is installed at the end of the drive shaft of the drive motor.
A planetary gear device is incorporated into the rotating drum, and
A brake was provided at the shaft end of the continuously variable transmission. That is, the configuration of the present invention includes a drive motor attached to a frame, a continuously variable transmission built into the end of the drive shaft of the drive motor, and a continuously variable transmission located on the opposite side of the drive motor. A brake attached to the shaft end of the continuously variable transmission, a rotating drum located between the drive motor and the continuously variable transmission and having the drive shaft of the drive motor passed through it, and this rotating drum. The invention is characterized in that it includes a planetary gear device that is incorporated into the continuously variable transmission and transmits torque from the continuously variable transmission to the rotating drum.

Function The rotation of the drive motor is transmitted to the continuously variable transmission through the drive shaft, and this continuously variable transmission changes the speed to the desired rotation.
The torque at this changed rotational speed is input to the planetary gear device and transmitted to the rotating drum, and the wire rope is wound up by the rotation of the rotating drum.

Embodiment FIG. 1 shows an embodiment of the present invention. 1st
In the figure, 1 is a frame, 2 is a drive motor attached to the frame 1, 3 is a drive shaft that comes out of the drive motor 2 and passes through the frame 1, and 4 is an end of the drive shaft 3. 5 is a mechanical continuously variable transmission incorporated in the drive motor 2; 5 is a brake desk located on the opposite side of the drive motor 2 and attached to the end of the shaft 4 of the drive motor; 6 is the drive motor; A rotating drum is located between the motor 2 and the continuously variable transmission 4 and has the drive shaft 3 passing through it, 7 is a hollow drive shaft which is the output shaft of the continuously variable transmission 4, and 8 is the hollow drive shaft. 7 is an external gear type first sun gear; 9 is the first sun gear;
A pinion-type first planetary gear 10 meshing with the sun gear 8; a second external gear-type sun gear 11 attached to the shaft 13 of the first planetary gear 9 and revolving in the same manner as the shaft 13; is an automatic pinion-type second planetary gear that meshes with the second sun gear 10 and is supported by a shaft 14 supported by the frame 1;
Reference numeral 12 denotes a drum internal gear of an internal gear type, which is integrally provided inside the rotating drum 6 and meshes with the first planetary gear 9 and the second planetary gear 11. That is, the planetary gear device includes a first sun gear 8, a first planet gear 9, a second sun gear 10, and a second planet gear 1.
1. It consists of a drum internal gear 12, etc., and is incorporated into the rotating drum 6.

In the winch configured as shown in FIG. 1, the rotation of the drive motor 2 is transmitted to the continuously variable transmission 4 through the drive shaft 3, and the continuously variable transmission 4 can generate any desired rotation between 0 and 100%. The hollow drive shaft 7 is rotated. Due to the rotation of the hollow drive shaft 7, the first sun gear 8 also rotates, and the several first planetary gears 9 meshing with the first sun gear 8 rotate on their own axis while meshing with the drum internal gear. revolve. Further, the second sun gear 10 rotates in the same manner as the first planetary gear 9 revolves, causing several second planetary gears 11 to rotate,
As a result, the second planetary gear 11 is connected to the drum internal gear 12.
The rotation is transmitted to rotate the rotating drum 6. In this way, a wire rope (not shown) can be wound up by the rotation of the rotating drum 6.
Also, when it is necessary to brake the rotating drum 6,
The brake disc 5 is braked.

In this way, the speed change of the continuously variable transmission 4 can be selected depending on fast winding or slow winding, and if the drive motor 2 is an electric motor, the speed can also be controlled using a primary voltage control method or the like. It is possible.

Note that FIG. 1 shows an example of the continuously variable transmission 4, and the design may be changed to another type. Further, as for the drive motor 2, a hydraulic motor or the like may be used instead of an electric motor.

Effects of the Invention In the present invention, the drive shaft of the drive motor passes through the rotating drum, and the planetary gear device is built into the rotating drum, so the entire winch becomes extremely compact and has a large size. It reduces weight, makes assembly and disassembly easier, and significantly reduces installation space on cranes, etc., and
It is now possible to incorporate a continuously variable transmission into the end of the drive shaft, and this continuously variable transmission expands the speed control of the rotating drum to a range of 0 to 100%, and the brake is different from the drive motor. Since it is located on the opposite side and attached to the shaft end of the continuously variable transmission, it is easy to adjust the brake torque, and there is no need for a special structure, so it can be used as a commercially available brake that matches the performance. Moreover, it is easy to install parts for speed control feedback and other accessory equipment.

[Brief explanation of drawings]

Fig. 1 is a partially cutaway front view showing an embodiment of the present invention, Fig. 2 is an explanatory drawing showing one example of a conventional winch, and Fig. 3 is an explanatory drawing showing another example. It is. 1... Frame, 2... Drive motor, 3...
Drive shaft, 4... Continuously variable transmission, 5... Brake disk, 6... Rotating drum, 7... Hollow drive shaft,
8...First sun gear, 9...First planetary gear, 10
...Second sun gear, 11...Second planetary gear, 12
...Drum internal gear.

Claims (1)

[Claims] 1 A drive motor attached to a frame, a continuously variable transmission built into the end of a drive shaft of the drive motor, and a shaft of the continuously variable transmission located on the opposite side of the drive motor. a brake attached to the end; a rotating drum located between the drive motor and the continuously variable transmission and having the drive shaft of the drive motor passed through; A winch comprising a planetary gear device that transmits torque from a continuously variable transmission to the rotating drum.