JPH0235684Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a motor pulley used as a driving pulley of a belt conveyor, a winch, a winding drum, or the like.

Conventionally, this type of motor pulley has a rigid structure that integrates the prime mover and reducer, with the prime mover side attached to one end of the hollow drum via a bearing, and the reducer side attached to the other end of the hollow drum. However, since the entire structure is built into a hollow drum, it is impossible to avoid the load transmitted from the belt etc. through the hollow drum being directly applied to each part of the prime mover and reducer built into the drum. It is disadvantageous in terms of performance, the interior of the hollow drum is complicated, it is disadvantageous in terms of maintenance, the models are limited, and it is not possible to meet various required specifications. However, they were not free from problems such as high prices.

The present invention was devised to solve the above-mentioned conventional problems, and it has a simple structure, reduces manufacturing costs, facilitates handling, and can easily meet various required specifications. It is an object of the present invention to provide a motor pulley which can release abnormal loads from etc. through a coupling of a connecting part.

In the motor pulley of the present invention, brackets are fixed to both ends of a hollow drum, and the bracket at one end of the hollow drum is rotatably supported via a bearing by a fixed shaft extending in the axial direction along the center of the hollow drum. The hollow side end of the hollow drum of the fixed shaft is fixed to the case of the prime mover, and the output shaft of the prime mover extends in the axial direction from the center of the hollow portion of the hollow drum, while the other end side bracket of the hollow drum is fixed to the case of the prime mover. The outer frame of an outer frame rotating type reducer is fixed to the frame, and the input shaft of the reducer extends toward the prime mover from the center of the hollow part of the hollow drum, and the output shaft of the prime mover and the input shaft of the reducer are flexible. They are characterized in that they are connected to each other via a coupling ring.

The present invention will be explained below with reference to the illustrated embodiment. In the figure, reference numeral 1 denotes a prime mover, which is supported via a fixed shaft 2 attached to one end of the prime mover 1 at the center of one end of a hollow drum 3 via a bracket 4 and a bearing 5. has been done. The prime mover 1 is connected to a power source (not shown) via a captire cable 6 passing through the fixed shaft 2. Reference numeral 7 denotes an outer frame rotary reducer having, for example, a planetary gear mechanism, and a fixed shaft 8 concentric with the fixed shaft 2.
It is fixed to a fixed member (not shown) via the fixed shaft 8, and is attached to the outer frame 10 of the reducer.
is integrally attached to the other end of the hollow drum 3 via a bracket 9. The output shaft 11 of the prime mover 1 and the input shaft 12 of the reducer 7 are connected to each other via a flexible coupling 13.

Therefore, this motor pulley is installed and used by fixing the fixed shaft 2 of the prime mover 1 and the fixed shaft 8 of the outer frame rotary reducer 7, respectively. When in use, the case of the prime mover 1 is fixed via the fixed shaft 2, and its output shaft 11 rotates like a normal prime mover, so the rotational force is transmitted from the flexible coupling 13 as indicated by the arrow in the figure. Input shaft 1 of reducer 7
The rotation of the hollow drum 3 drives a belt or the like (not shown).

In this way, since the motor pulley is installed by the fixed shafts 2 and 8, a reaction force is generated on the fixed shafts 2 and 8 due to the belt load, and the parts are bent due to the action of the reaction force, and the clearance of the bearing 5 is The effects of the above are also compounded so that the center lines of the output shaft 11 of the prime mover 1 and the input shaft 12 of the reducer 7 intersect at a certain angle. Furthermore, eccentricity occurs between the shafts 11 and 12 due to accumulation of eccentricity errors of the components. However, since the intersection and eccentricity of these axes are absorbed by the flexible coupling 13, smooth power transmission is achieved.

As described above, during use, the present invention absorbs the intersection and eccentricity of the axes that occur between the output shaft of the prime mover and the input shaft of the reducer by coupling, so that bending loads due to belt loads etc. do not act on the prime mover and reducer. This is advantageous in terms of strength and performance. In addition, both the prime mover and reducer can be appropriately selected from standard mass-produced products and combined by simple coupling using couplings, which is not only advantageous in terms of cost and maintenance, but also allows easy design to meet various required specifications. can correspond to

Therefore, according to the present invention, all the drawbacks of the conventional integrated type can be eliminated.

[Brief explanation of the drawing]

The drawing is a longitudinal sectional view showing an embodiment of the present invention. 1... Prime mover, 2... Fixed shaft, 3... Hollow drum, 4... Bracket, 5... Bearing, 6... Captire cable, 7... Speed reducer, 8... Fixed shaft, 9... Bracket, 10...outer frame, 11,1
2...Input shaft, 13...Flexible coupling.

Claims (1)

[Scope of utility model registration request] Brackets are fixed to both ends of the hollow drum,
A bracket at one end of the hollow drum is rotatably supported via a bearing by a fixed shaft extending in the axial direction along the center of the hollow drum, and the hollow side end of the hollow drum of the fixed shaft is connected to the case of the prime mover. The output shaft of the prime mover extends in the axial direction through the center of the hollow portion of the hollow drum, while the outer frame of an outer frame rotating type reducer is fixed to the bracket on the other end of the hollow drum, and the output shaft of the prime mover extends in the axial direction through the center of the hollow portion of the hollow drum. A motor pulley characterized in that an input shaft of the machine extends from the center of the hollow portion of the hollow drum toward the prime mover, and an output shaft of the prime mover and an input shaft of the reduction gear are connected to each other via a flexible coupling.