JPS6216999A - Winch - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

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

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 speed reducer, 23 is a wire winding drum, and 24 is a brake. Further, 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 of requiring a large installation space, and the reduction ratio of the reduction gear 22 is manually switched, and the speed ratio is generally Since it has two stages, there is also the problem that the speed control range is small. Further, there is a 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 downsized, reduce costs, and expand the speed control range.

Means for solving 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 is provided at the shaft end of the continuously variable transmission. . That is, one configuration of the present invention includes a drive motor attached to a frame, a continuously variable transmission built into an end of a 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.

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

Embodiment FIG. 1 shows an embodiment of the present invention. In FIG. 1, 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 a drive shaft 6. A mechanical continuously variable transmission built into the end, 5 is the drive motor 2
A brake disc 6 is located between the drive motor 2 and the continuously variable transmission 4 and is attached to the shaft end of the continuously variable transmission 4 on the opposite side of the drive shaft 3. 7 is a hollow drive shaft that is the output shaft of the continuously variable transmission 4; 8 is a first sun gear of an external gear type provided on the hollow drive shaft 7; 9 is a first sun gear; A pinion-type first planetary gear 10 meshes with the sun gear 8, and a second external gear-type sun 10 is attached to the shaft 13 of the first planetary gear 9 and revolves in the same manner as the shaft 13. A gear 11 is a pinion-type second planetary gear that meshes with the second sun gear 10 and rotates while being supported by a shaft 14 supported by the frame 1. A gear 12 is integrally provided inside the rotating drum B. This is a drum internal gear of an internal gear type, which is meshed with the first planetary gear 9 and the second planetary gear 11. That is, the planetary gear device
Sun gear 8, first planetary gear 9, second sun gear 10, second
It consists of a planetary gear 11, 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 6, 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 at the same time as the first planetary gear 9 revolves, causing several second planetary gears 11 to rotate, so that the second planetary gear 11 transmits rotation to the drum internal gear 12 for one rotation. Rotate the drum 6. In this way, the wire rope (not shown) can be wound up by the rotation of the rotating drum O. Further, 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 according to fast winding or slow winding, etc., and if the drive motor 2 is an electric motor, the speed can be controlled using a negative voltage control method or the like. is also possible.

Note that FIG. 1 shows an example of the continuously variable transmission 4, and other types of continuously variable transmissions ((the design may be modified).

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 infant gear system is built into the rotating drum, making the entire winch extremely compact. As a result, the weight is significantly reduced, assembly and disassembly are easy, and the installation space on the crane seat can be significantly reduced, and a continuously variable transmission can be installed at the end of the drive shaft. In this continuously variable transmission, the speed control of the rotating drum is expanded to 0 to 100% electric power, and the brake is located on the opposite side of the drive motor to control the shaft end of the continuously variable transmission. Because it is attached, it is easy to adjust the brake torque, and it is possible to select a commercially available brake that matches the performance without requiring a special structure. It is also easy to install parts and other accessories.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway front view showing an embodiment of the present invention, FIG. 2 is an explanatory view showing an example of a conventional winch, and FIG.
The figure is an explanatory diagram showing another example. DESCRIPTION OF SYMBOLS 1... Frame, 2... Drive motor, 3... Drive shaft, 4... Continuously variable transmission, 5... Brake disc, 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 the 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, a rotating drum located between the drive motor and the continuously variable transmission and through which the drive shaft of the drive motor passes, and a rotary drum built into the rotating drum. A winch comprising: a planetary gear device that transmits torque from the continuously variable transmission to the rotating drum.