JP2002349665A - Conversion equipment for power shaft low-speed drive - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a conversion equipment for a power shaft low-speed drive, capable of holding the backstop of the power shaft, such as a bucket conveyor, and facilitates visual observation of facilities. SOLUTION: Not less than three rollers are interposed in a cylinder part 3 of a cam clutch for backstop of the power shaft 1, one is mounted on a cylinder part 3, and the two are placed in a place for mounting the cylinder part 3. Each roller 4 is supported with two bearing plates, integrally secured with each other, the cylinder part 3 is fitted with clearance for the bearing plates 5, 6; a torque arm 7 is formed in an elongated plate with respect to the bearing plate 5 located outside, a stopper 8 restricting the amplitude of the end part is provided; and a gear 10 or a sprocket having a smaller diameter of a geared motor 9 at lower part of external surface of the bearing plate 5 and a gear 11 having a larger diameter 11 or sprocket at side end of the cylinder part 3 of the cam clutch 2 are coaxially installed and meshed with each other or connected by a chain 12.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a low-speed drive conversion device for a power shaft integrated with a torque arm, which is used for maintenance and inspection.

[0002]

2. Description of the Related Art Conventionally, in vertical conveying equipment such as a bucket conveyor, when driving is stopped, a power shaft rotates in a reverse direction depending on a load position in a bucket, and a load is applied to a motor. To prevent bucket conveyors and equipment from being damaged by the accumulation of spills in the equipment. To prevent this, a cam clutch for preventing reverse rotation is provided at one end of the power shaft, and a torque arm integrated with it is used as a stopper. Thereby, rotation of the power shaft in the reverse direction is suppressed. By the way, the operation of the bucket conveyor is stopped and the maintenance and inspection are periodically performed, but at this time, the movement of the bucket is not easy. Further, during the operation, it is not possible to visually inspect the defect due to the movement speed of the bucket.

[0003]

SUMMARY OF THE INVENTION The present invention has a function of preventing the power shaft from reversing in the event of an emergency stop or overload of the bucket conveyor and stopping the normal operation to facilitate visual inspection of the bucket conveyor. It is intended to provide equipment for converting the driving speed to a low speed.

[0004]

Here, the inventor of the present invention sandwiches three or more rollers 4 on the outer periphery of a cylindrical portion 3 corresponding to the outer periphery of a reverse rotation preventing cam clutch 2 of a power shaft 1 as a power shaft low speed drive conversion device. In doing so, one is placed on the cylindrical part 3 and two are placed at the position where the cylindrical part 3 is placed,
Each roller 4 is rotatably supported by two bearing plates 5 and 6 which are integrally fixed to each other, and the cylindrical portion 3 extends freely through the two bearing plates 5 and 6 and is located outside. 5, a torque arm 7 is formed on the extension surface, a stopper 8 for suppressing the runout of the tip is provided, and a small-diameter gear 10 or a sprocket of a geared motor 9 is mounted below the outer surface of the bearing plate 5; A large-diameter gear 11 or a sprocket was mounted concentrically on the side end face of the part 3 and meshed with each other, or a gear connected by a chain 12 was found.

As another power shaft low-speed drive conversion device, a large-diameter gear 11 or a sprocket is mounted on a side end surface of a cylindrical portion 3 which is an outer periphery of a reverse rotation preventing cam clutch 2 of the power shaft 1, and the cylindrical body 13 is connected to a cam. Separated outward from the cylindrical portion 3 of the clutch 2 and mounted concentrically on the inner surface of a large-diameter gear 11 or a sprocket, and when sandwiching three or more rollers 4 on the outer periphery of the cylindrical body 13, one The roller 4 is placed on the body 13 so that the two rollers are located at positions where the cylinder 13 is placed. Each roller 4 is supported by two bearing plates 5 and 6 which are integrally fixed to each other. Are loosely penetrated with respect to the two bearing plates 5, 6. A torque arm 7 is formed on an extension surface of the outer bearing plate 5, and a stopper 8 for suppressing the run-out width at the tip is provided. Below the outer surface of plate 5 Wearing the small diameter of the gear 10, or sprocket of the geared motor 9, the large-diameter gear
I came up with something that meshed with the 11 or sprocket or connected with a chain.

[0006] In these power shaft low speed drive converters, a rubber ring is attached to the outer periphery of the roller 4 mounted on the cylindrical portion 3 or the cylindrical body 13 or a smooth plate is used instead of the roller. Some are preferred.

[0007] In particular, this power shaft low-speed drive converter is suitable for a power shaft 1 for operating a bucket conveyor.

Further, with respect to these power shaft low speed drive conversion devices, a method is employed in which the geared motor 9 is not operated during normal operation, the power during normal operation is not operated during low speed operation, and the geared motor 9 is operated. .

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIGS. 1 and 2, a power shaft low-speed drive conversion device includes a cylindrical portion 3 having a torque arm removed from a cylindrical portion corresponding to the outer circumference of a cam clutch for preventing reverse rotation of an existing power shaft. It is mounted so as to sandwich three or more rollers 4 in parallel with the power shaft 1. In some cases, a slight gap may be provided to facilitate this mounting operation. When three or more rollers 4 are attached to the cylindrical portion 3 so as to be sandwiched between them, one is placed on the cylindrical portion 3 and two are placed at positions where the cylindrical portion 3 is placed. Individuals are enough. The rotating shaft of each roller 4 is rotatably supported by two bearing plates 5 and 6. In this case, the two bearing plates 5, 6 are fixed directly or indirectly to one another.

When the power shaft 1 is rotating normally, the roller 4 at the top position is placed on the cylindrical portion 3 under the load of most of the members integrated therewith. Further, when the power shaft 1 is rotating at a low speed, the two rollers 4 on the left and right at the lower position are in close contact with the cylindrical portion 3 and the top roller 4 and the cylindrical roller 4 are fixed depending on how the roller 4 is attached to the cylindrical portion 3. Gaps may form between the parts 3.

In the power shaft low speed drive conversion device, a rubber ring may be provided on the outer periphery of the roller 4 at the top position in order to facilitate the mounting of each roller 4. The rubber ring on the outer periphery of the roller 4 is deformed when each roller 4 is fitted to the cylindrical portion 3, thereby facilitating the fitting. Further, in view of the function of the roller 4 at the top portion, a smooth plate made of plastic or the like having appropriate strength may be used for the roller 4.

The cylindrical portion 3 projects through the bearing plates 5 and 6 of the two rollers in a state where there is a sufficient space, and a torque arm 7 is formed on the extension surface of the outer bearing plate 5. A stopper 8 for suppressing the runout of the tip is provided.

A small-diameter gear 10 or a sprocket of the geared motor 9 is mounted on the lower portion of the outer surface of the outer bearing plate 5, and a large-diameter gear 11 or a sprocket is mounted on the side end surface of the cylindrical portion 3 of the cam clutch 2 respectively. The two are connected by a chain 12 or a chain 12, so that the power shaft 1 can be driven at a low speed. In addition, the meshing is limited to the case where both are gears. The geared motor 9 is integrated with the outer bearing plate 5 and is not fixed to other parts.

As another power shaft low speed drive conversion device for the same purpose as shown in FIG. 3, a large diameter gear is concentrically mounted on a side end surface of a cylindrical portion 3 which is an outer periphery of a cam clutch 2 for preventing reverse rotation of a power shaft 1. 11 or sprocket,
The cylindrical body 13 is mounted concentrically on the inner surface of the large-diameter gear 11 or the sprocket, away from the cylindrical part 3 of the cam clutch 2. In mounting three or more rollers 4 on the outer periphery of the cylindrical body 13, one is placed on the cylindrical body 13, and two are placed at positions where the cylindrical body 13 is placed. Similarly to the former device, each roller 4 is supported by two bearing plates 5 and 6, and the two bearing plates 5 and 6 are fixed integrally.

A cylindrical body 13 protrudes from the two bearing plates 5 and 6 with a sufficient space, and a torque arm 7 is formed on an extended surface of the outer bearing plate 5, and a distal end thereof is formed. A stopper 8 for suppressing the swing width of the shaft is provided.

A small-diameter gear 10 or a sprocket of a geared motor 9 is mounted on the lower portion of the outer surface of the outer bearing plate 5, and meshed with a large-diameter gear 11 or a sprocket, or connected by a chain.

The components of the latter power shaft low-speed drive conversion device are the same as those of the former power shaft low-speed drive conversion device, and therefore detailed description is omitted. However, the feature of this is that the operation of attaching each roller 4 to the cylindrical portion 3 which is rather complicated is omitted, thereby simplifying the operation.

In this device, the geared motor is not operated during normal operation, and the power during normal operation is stopped during low-speed operation, and the geared motor is operated.

In the power shaft low-speed drive converter, when the power shaft 1 is rotating normally, the cylindrical portion 3 of the cam clutch 2 and the power shaft 1 are unlocked, and the load on the power shaft low-speed rotation converter is reduced. However, when the power shaft 1 is rotated at a low speed, the rotation torque of the geared motor 9 is applied to the power shaft 1 only when the rotation torque of the gear 3 is in a locked state via the cylindrical portion 3 of the cam clutch 2 and the cylindrical portion 3 and the power shaft 1 are locked. At this time, the rotation direction of the cylindrical portion 3 and the power shaft 1 becomes the same, and the rotation of the power shaft 1 in the same direction as during normal rotation is maintained. Also,
At this time, a torque in a direction opposite to the rotation direction of the power shaft 1 acts on the bearing plate 5 to cause the tip of the torque arm 7 to swing, but the U-shaped section fixed to the equipment is turned upward. The stopper 8 is received in the stopper 8.
The torque arm 7 functions when the power shaft 1 rotates in a direction opposite to the normal operation. However, if the load exceeds the proof stress of the power shaft low-speed drive converter, the device is damaged. Reverse rotation is caused by an emergency stop or overload during unloading on a bucket conveyor.

As a conventional example, the power motor of the equipment having a conveying speed of 150 m / min for operation of the bucket conveyor (head 30 m, unloading capacity 100 ton / hour) is 15 KW, but the apparatus of the present invention is used to rotate at low speed. If you do
If the transfer speed is 3 m / min, the power motor is set to 0.
It becomes 2KW and it becomes small and light. However, it is inevitable that the lift is reduced by about 1/3. Therefore, the device of the present invention is most suitable for inspection work of a bucket conveyor at the time of no-load operation.

[0021]

The power shaft low-speed drive conversion device for maintenance and inspection of equipment used in the present invention is small, lightweight and inexpensive, and can be easily attached to existing equipment. The power consumption of the device is extremely low, and a considerably low speed operation is possible. Since the structure of the device is simple, its maintenance is easy.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram of a power shaft low-speed drive conversion device.

FIG. 2 is a front view (a) and a side view (b) for explaining a power shaft low-speed drive converter.

FIG. 3 is a front view (c) and a side view (d) for explaining a power shaft low-speed drive conversion device using a cylindrical body.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Power shaft 2 Cam clutch 3 Cylindrical part 4 Roller 5 Bearing plate 6 Bearing plate 7 Torque arm 8 Stopper 9 Geared motor 10 Small diameter gear 11 Large diameter gear 12 Chain 13 Cylindrical body

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) H02K 7/10 H02K 7/10 C

Claims (6)

[Claims] 1. When three or more rollers (4) are sandwiched on the outer periphery of a cylindrical portion (3) corresponding to the outer periphery of a cam clutch (2) for preventing reverse rotation of a power shaft (1), one of the cylindrical portions ( 3), two of them are located at positions where the cylindrical part (3) is placed, and each roller (4) is fixed to one another by two bearing plates (5), (6). And the cylindrical portion (3) has two bearing plates (5),
The bearing plate (5), which is free from (6), has a torque arm (7) formed on the extension surface of the bearing plate (5) located on the outside, and a stopper (8) for suppressing the swing width at the tip end thereof is provided. A small-diameter gear (10) or sprocket of a geared motor (9) is provided at the lower portion of the outer surface of the plate (5), and a large-diameter gear (11) or sprocket is concentrically mounted on the side end surface of the cylindrical portion (3) of the cam clutch (2). Power shaft low-speed drive converters that are fitted with each other and meshed with each other or connected by a chain (12). 2. A large-diameter gear (11) or a sprocket is mounted concentrically on a side end surface of a cylindrical portion (3) corresponding to an outer periphery of a reverse rotation preventing cam clutch (2) of a power shaft (1). ) Is separated from the cylindrical portion (3) of the cam clutch (2) outward, and is mounted concentrically on the inner surface of the large-diameter gear (11) or sprocket, and three or more rollers are mounted on the outer periphery of the cylindrical body (13). In inserting (4), one is a cylindrical body (13)
, Two of which are in the position where the cylindrical body (13) is placed, and each roller (4) is supported by two bearing plates (5), (6) which are integrally fixed to each other. Supported, the cylindrical body (13) has two bearing plates (5),
The bearing plate (5), which is free from (6), has a torque arm (7) formed on the extension surface of the bearing plate (5) located on the outside, and a stopper (8) for suppressing the swing width at the tip end thereof is provided. A small-diameter gear (10) or sprocket of a geared motor (9) is attached to the lower part of the outer surface of the plate (5), and the small-diameter gear (11) or sprocket is meshed with the large-diameter gear (11) or a sprocket or a power connected by a chain. Shaft low-speed drive converter. 3. The power shaft low speed drive conversion device according to claim 1, wherein a rubber ring is attached to an outer periphery of the roller (4) mounted on the cylindrical portion (3) or the cylindrical body (13). 4. A smooth plate is used instead of the roller (4) mounted on the cylindrical portion (3) or the cylindrical body (13).
Or the power shaft low-speed drive conversion device according to 2. 5. The power shaft low-speed drive conversion device according to claim 1, wherein the power shaft (1) is for operating a bucket conveyor. 6. The power shaft low-speed drive conversion device according to claim 1, wherein the geared motor is not operated during normal operation, and the power during normal operation is not operated during low-speed operation. 9) A power shaft low-speed drive conversion method by operating (9).