JPH0989058A - Grain conveying elevator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To properly transmit power by always suitably holding the tension of a transmission belt suspended between an output shaft of a drive motor and an upper part pulley of an elevator main unit, while always holding high safety even in the case of breaking the transmission belt suspended between the output shaft of the drive motor and the upper part pulley of the elevator main unit. SOLUTION: A grain conveying elevator 1 is formed in a constitution suspending a conveying belt 6 mounting many buckets 5 between upper/lower part pulleys 3, 4 supported at upper/lower ends of an elevator main unit 2. A drive motor 7 is provided in an upper part of the elevator main unit 2. Between an output shaft of the drive motor 7 and the upper part pulley 3 is associated with a transmission belt 9. A mounting base part of the drive motor 7 is supported on the upper part of the elevator main unit 2. An elastic journalling member 11 is interposed in a journalling part of the drive motor 7.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention has a conveyor belt having a large number of buckets suspended between an upper pulley and a lower pulley that are pivotally supported on the upper and lower ends of an elevator body, and a drive motor is provided on the upper portion of the elevator body. The present invention relates to a grain transfer elevator that links a drive motor output and an upper pulley with a transmission belt.

[0002]

2. Description of the Related Art A grain conveyor elevator is constructed by suspending a conveyor belt having a large number of buckets between an upper pulley and a lower pulley which are rotatably supported at the upper and lower ends of an elevator body. It is widely used as a carrying device for carrying out. Conventionally, in this type of grain conveying elevator, a transmission belt (V belt) is suspended and interlocked between an output shaft of a drive motor and an upper pulley (for example, Japanese Utility Model Publication No. Sho 45-27377 or actual). Kosho 46-5870
Reference).

[0003]

By the way, a transmission belt (V belt) is provided between the output shaft of the drive motor and the upper pulley.
In a conventional grain transfer elevator that suspends and interlocks, the drive motor mount is rotatably supported with respect to the elevator body, and the spring pulls the drive motor mount in the belt tension direction for transmission. The belt is stretched, or the drive motor is fixed to the elevator body and the belt tension mechanism is separately provided.However, with the configuration in which the drive motor is pulled by the spring, the drive belt is driven when it breaks. There is a problem in safety because the motor itself suddenly turns in a direction that largely projects from the elevator body or collides with the elevator body. Further, in the case where the belt tension mechanism is provided, not only the structure becomes complicated, but also when the transmission belt is broken, the tension pulley pops out in one direction, which is also unsafe for safety.

Therefore, the present invention is intended to solve such a conventional problem, in which a rotation angle about a rotation fulcrum of a drive motor provided on the upper portion of the elevator main body is set as follows.
Even if the transmission belt suspended between the output shaft of the drive motor and the upper pulley of the elevator body is broken, the transmission belt is regulated within the belt tension range and the transmission belt is configured to give an appropriate tension force. The drive motor does not suddenly turn in a direction that significantly protrudes from the elevator body or collides with the elevator body, so high safety is always maintained, and the transmission belt suspended between the output shaft of the drive motor and the upper pulley of the elevator body is It is an object of the present invention to provide a grain transporting elevator in which tension is always kept appropriate and power is accurately transmitted.

[0005]

SUMMARY OF THE INVENTION To achieve the above object, a grain conveying elevator according to the present invention is a conveyer in which a large number of buckets are attached between an upper pulley and a lower pulley that are pivotally supported at the upper and lower ends of the elevator body. In a grain conveyor elevator that suspends a belt and has a drive motor on the top of the elevator body, and the output shaft of the drive motor and the upper pulley are linked by a transmission belt, the mounting base of the drive motor is placed on the top of the elevator body. In addition, the corresponding interval between the output shaft of the drive motor and the upper pulley can be freely changed with the shaft support portion as a rotation fulcrum.
An elastic shaft supporting member is provided in the shaft supporting portion of the drive motor so as to restrict the rotation angle about the rotation supporting point of the drive motor within the belt tension range of the transmission belt and to give an appropriate tension to the transmission belt. It is a thing.

In the present invention, the elastic shaft support member is such that the inner shell of the rectangular tube is incorporated in the shell of the square tube, and the elastic material is interposed between the outer shell and the inner shell. It is preferable that the outer shell is fixed to the upper part of the elevator body, and the inner shell serves to axially support the drive motor.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is an overall front view showing a grain transport elevator according to the present invention partially broken away, FIG. 2 is an enlarged side view of a portion thereof, and FIG. 3 is a state in which a transmission belt is cut ( Alternatively, FIG. 4 and FIG. 5 are enlarged side views showing an operation of a main part, which is a state before a transmission belt is hung).

In FIG. 1 and FIG. 2, reference numeral 1 is a grain transfer elevator, and this grain transfer elevator 1 comprises an elevator main body 2
A conveyor belt 6 having a large number of buckets 5 mounted thereon is suspended between an upper pulley 3 and a lower pulley 4, which are axially supported at the upper and lower ends, respectively. A drive motor 7 is provided above the elevator main body 2, and a transmission belt (V belt) 9 is suspended and interlocked between an output shaft of the drive motor 7 and a transmission pulley 8 of the upper pulley 3. . Although not shown, the lower pulley 4 is provided with a belt tensioning mechanism for the conveyor belt 6.

The base of the mounting base 10 of the drive motor 7 is pivotally supported on the upper part of the elevator main body 2, and the corresponding distance between the output shaft of the drive motor 7 and the upper pulley 3 is changed with the pivot support as the pivot. The rotation angle of the drive motor 7 around the rotation fulcrum of the drive motor 7 is restricted within the belt tension range of the transmission Balt, and the transmission belt 9 is appropriately tensioned. An elastic shaft support member 11 is provided.

The elastic shaft support member 11 for restricting the rotation angle of the drive motor 7 about the rotation fulcrum within a certain range and for applying an appropriate tension to the transmission belt 9 is an outer shell of a rectangular tube shape. 12
The inner shell 13 having a rectangular tube shape is incorporated in the inside of the shell, and the outer shell 1
The elastic member 14 such as rubber is interposed between the four corners in 2 and the outer peripheral surface of the inner shell body 13. The shaft supporting portion of the drive motor 7 is provided outside the elastic shaft supporting member 11. The shell 12 is fixed to the upper part of the elevator body 2 by the fixing member 15, and the inner shell 1
3, the drive motor 7 is pivotally supported.

Then, as shown in FIG. 3, the transmission belt 9
The outer shell body 12 of the elastic shaft support member 11 is fixed to the elevator main body 2 side so that the drive motor 7 is inclined at a constant angle (about 30 degrees) from the mounting surface of the elevator main body 2 in a state in which the vertical axis is not applied. In this mounted state, the drive motor 7 is rotatable about a rotation fulcrum in a direction approaching the upper pulley 3 side and a direction separating from the upper pulley 3 side, and by the elastic force of the elastic member 14 of the elastic shaft support member 11, Automatically restored to the position of
reference). Therefore, as shown in FIG.
When a transmission belt 9 is suspended between the output shaft of the upper pulley 3 and the transmission pulley 8 of the upper pulley 3, the transmission belt 9 is attached to the elastic shaft support member 1.
By 1, the elastic restoring force always keeps an appropriate tension state (see FIG. 5).

When the transmission belt 9 is broken in the state of FIG. 2, the state in which the drive motor 7 is attracted to the upper pulley 3 side is eliminated, so that the drive motor 7 is restored by the elastic restoring force of the elastic shaft support member 11. Although it rotates about the rotation fulcrum up to the position, it does not rotate any more. Therefore, even if the transmission belt 9 is cut off, the drive motor 7 should suddenly rotate in a direction in which it largely projects from the elevator main body 2. There is no need for safety.

Further, before the transmission belt 9 is hung, or even when the transmission belt 9 is broken, the drive motor 7 is operated as shown in FIG.
As shown in, since the distance from the transmission pulley 8 on the elevator main body 2 side is not so large, it is easy to hang the transmission belt 9 between the output shaft of the drive motor 7 and the transmission pulley 8. Moreover, since the drive motor 7 does not suddenly rotate, it is safe, and the safety of work performed at a high place is ensured, especially in a large-sized grain conveyor elevator having a high height.

[0014]

According to the present invention, the rotation angle about the rotation fulcrum of the drive motor provided on the upper portion of the elevator body is restricted within the belt tension range of the transmission belt, and the transmission belt is appropriately tensioned. By being configured to give power,
Even when the transmission belt suspended between the output shaft of the drive motor and the upper pulley of the elevator body is broken, the drive motor does not suddenly turn in a direction that protrudes significantly from the elevator body or collides with the elevator body, which ensures high safety. It is possible to obtain a grain transfer elevator in which the output of the drive motor and the tension of the transmission belt suspended between the upper pulley of the elevator main body are maintained at an appropriate level and power is accurately transmitted.

[Brief description of drawings]

FIG. 1 is a side view showing a grain transport elevator according to the present invention partially broken away.

FIG. 2 is an enlarged side view of a part of FIG.

FIG. 3 is a partial enlarged side view showing a state in which the transmission belt is broken (or a state before the transmission belt is hung).

FIG. 4 is an enlarged side view showing the operation of the main part.

FIG. 5 is an enlarged side view showing the operation of the main part.

[Explanation of symbols]

 1 Grain Conveyor Elevator 2 Elevator Main Body 3 Upper Pulley 4 Lower Pulley 5 Bucket 6 Conveyor Belt 7 Drive Motor 8 Transmission Pulley 9 Transmission Belt 10 Mounting Base 11 Elastic Shaft Support Member 12 Outer Shell 13 Inner Shell 14 Elastic Material such as Rubber 15 Fixing member

Claims (2)

[Claims] 1. A conveyor belt having a large number of buckets is suspended between an upper pulley and a lower pulley that are axially supported on the upper and lower ends of an elevator body, and a drive motor is provided on the top of the elevator body to provide an output shaft of the drive motor. In a grain conveyor elevator that links the upper pulleys with a transmission belt, the mounting base of the drive motor is pivotally supported on the upper part of the elevator main body, and the corresponding spacing between the output shaft of the drive motor and the upper pulley is set to The rotation fulcrum can be changed, and the rotation angle around the rotation fulcrum of the drive motor is regulated within the belt tension range of the transmission Balt on the shaft support of the drive motor, and an appropriate tension is applied to the transmission belt. A grain transporting elevator, wherein an elastic shaft supporting member is provided. 2. The elastic shaft support member has a structure in which a rectangular tube-shaped inner shell body is incorporated inside the rectangular tube-shaped shell body, and an elastic material is interposed between the outer shell body and the inner shell body. The grain transfer elevator according to claim 1, wherein the outer shell is fixed to the upper part of the elevator main body, and the drive motor is axially supported by the inner shell.