JP7461730B2 - Heavy-duty transport roller device - Google Patents

Description

The present invention relates to an improvement to a heavy-duty transport roller device for carrying heavy objects when transporting heavy objects such as machine tools.

An example of a conventional heavy load transport roller device is the "self-propelled platform roller for transporting heavy loads" described in Patent Document 1 below. This is intended to reduce manual labor by allowing the device to move on its own, and two rollers are mounted on a frame with a rotating platform on the upper surface. A driven gear is fixed to one end of the shaft of each of these rollers, and a driving intermediate gear is engaged between them, with the drive shaft of this driving intermediate gear being driven by a motor. The self-propelled platform roller with a motor is inserted at the front in the direction of movement of the heavy load, and the platform roller without a motor is inserted at the rear. The self-propelled platform roller is driven using a remote control to move the heavy load on its own.

JP 2002-211720 A

However, in the background art described above, one end of the roller shaft is driven by a gear, so when a heavy load is placed on it, the roller shaft becomes twisted. This causes the roller to rotate at different speeds at both ends, making the conveying operation unstable.

The present invention focuses on the above points and aims to provide a heavy-duty transport roller device that effectively reduces twisting of the roller's rotation axis and can perform stable transport operations.

The heavy-duty transport roller device of the present invention includes a drive unit and a roll unit,
the drive unit includes a power supply control unit that controls the supply of driving power, a motor unit including a motor driven by the power supplied from the power supply control unit, and a main gear unit that transmits the driving force of the motor;
the roll unit includes a transmission gear unit that transmits a driving force from the main gear unit, a rotation gear unit that transmits the driving force of the transmission gear unit to a roll rotation shaft, and a roll train including a plurality of rolls through which the roll rotation shaft passes,
the transmission gear portion includes a transmission shaft that is rotated by a driving force from the main gear portion, and transmission gears that are provided on both ends of the transmission shaft and rotate together with the transmission shaft,
the rotating gear unit includes a rotating gear that receives a driving force from the transmission gear to rotate the roll rotating shaft at both ends,
A bearing is provided at an end of the rolls opposite to the end where the rotary gear is provided,
Each of the rolls has one end portion that is rotationally driven by the rotary gear, and the other end portion that is rotatably supported by the bearing on the roll rotation shaft.

One of the main aspects of the present invention is characterized in that an internal gear unit is provided instead of the bearing, and the internal gear unit has an inner gear provided on the roll rotation shaft and an outer gear provided on the inner circumference of the roll, and one end of each roll is rotated by the rotation gear unit and the other end is rotated by the internal gear unit. Another aspect is characterized in that a turntable is provided on the upper surface of a case that houses the drive unit and roll unit. Furthermore, the turntable is characterized in that a pin hole is provided in order to insert a pin for positioning between the turntable and the heavy load side. The above and other objects, features, and advantages of the present invention will become clear from the following detailed description and the accompanying drawings.

According to the present invention, one end of the roll is rotated by the rotating gear section, and the other end is supported by a bearing or rotated by an internal gear section. Therefore, even if a heavy load is applied between the roll rotation shaft and the roll due to a heavy object, the twisting generated in the roll rotation shaft is reduced, and the multiple rolls rotate as a whole. As a result, heavy objects can be transported stably and well, making it ideal for transporting heavy objects.

1A and 1B are diagrams showing a heavy-duty transport roller device according to a first embodiment of the present invention, in which (A) is a perspective view showing the external appearance, and (B) is a view seen from the rear side. FIG. 10A is a diagram showing the state of the embodiment when in use, and FIG. 10B is a perspective view showing the main parts of the embodiment 2. FIG. 13 is a diagram showing a third embodiment of the present invention. FIG. 13 is a diagram showing a fourth embodiment of the present invention.

The best mode for carrying out the present invention will be described in detail below with reference to examples.

Figure 1 (A) shows the external appearance of one embodiment of the present invention, and Figure 1 (B) shows the back view. In these figures, the heavy load transport roller device 100 is composed of a drive unit 200 and a roll unit 300. The drive unit 200 comprises a power supply control unit 210, a motor unit 220, and a main gear unit 230. The roll unit 300 comprises a transmission gear unit 310 that transmits the driving force from the main gear unit 230, rotation gear units 320, 330 that transmit the driving force to the roll rotation shaft, and a roll row 340.

Of these, the power supply control unit 210 of the drive unit 200 has a function of controlling the supply of drive power to the motor unit 220, and has a function of performing drive control based on operations on the remote control 212, such as turning the power supply ON/OFF and forward/reverse rotation. The motor unit 220 has a motor 222 driven by power supplied from the power supply control unit 210, and a drive gear 232 of the main gear unit 230 is provided on the drive shaft 224 of this motor 222. A DC motor that has higher torque at lower speeds is suitable as the motor 222. The main gear unit 230 has a driven gear 234 that meshes with the drive gear 232, and this driven gear 234 transmits drive force to the transmission gear unit 310 of the roll unit 300.

Next, the transmission gear section 310 of the roll section 300 is provided at the center of the roll section 300, and transmission gears 314, 316 are provided at both ends of the transmission shaft 312. Of these, the transmission gear 314 meshes with the rotating gears 322, 324 of the rotating gear section 320, and the transmission gear 316 meshes with the rotating gears 332, 334 of the rotating gear section 330. When the motor 222 rotates, the driving force is transmitted from the drive shaft 224 to the drive gear 232 to the driven gear 234, and the transmission shaft 312 rotates. When the transmission shaft 312 rotates, the transmission gears 314, 316 rotate, and the rotating gears 322, 324, 332, 334 rotate.

Next, the roll row 340 of the roll section 300 has two roll rotation shafts 342, 344 arranged in parallel, with rolls 350, 352 provided on one roll rotation shaft 342, and rolls 360, 362 provided on the other roll rotation shaft 344. The above-mentioned rotating gears 322, 324 are provided on one end of the roll rotation shafts 342, 344, respectively, and the above-mentioned rotating gears 332, 334 are provided on the other end. The rolls 350, 352, 360, 362 are provided with an outer ring 378 having cushioning properties such as urethane on the surface of the inner roll core 374 (see FIG. 2(B)). The rotating gears 322, 324 are screwed to the side of the roll core 374 of the rolls 350, 360, respectively, and the rotating gears 332, 334 are screwed to the side of the roll core 374 of the rolls 352, 362, respectively. As a result, when the rotating gears 322, 332 at both ends of the roll rotating shaft 342 rotate, the rolls 350, 352 rotate, and when the rotating gears 324, 334 at both ends of the roll rotating shaft 344 rotate, the rolls 360, 362 rotate.

Between the roll rotation shaft 342 and the rolls 350 and 352, a bearing 354 is provided, which supports the other ends of the rolls 350 and 352. That is, one end of the rolls 350 and 352 is supported by the rotating gears 322 and 332, and the other end is supported by the bearing 354. Between the roll rotation shaft 344 and the rolls 360 and 362, a bearing 354 is provided, which supports the rolls 360 and 362. That is, one end of the rolls 360 and 362 is supported by the rotating gears 324 and 334, and the other end is supported by the bearing 354. The number of bearings may be increased as necessary. In the illustrated example, a bearing 356 is also provided on the rotating gears 322, 324, 332, and 334 side.

Next, the roll unit 300 described above is stored in a case 400. The case 400 is box-shaped with its opening facing downward, and the power supply control unit 210 and motor unit 220 of the drive unit 200 are provided on its side. The rolls 350, 352, 360, and 362 are exposed at the bottom of the case 400, and are adapted to abut against the installation surface or ground GD, as shown in FIG. 2(A). In addition, a partition 402 is provided inside the case 400 between the rolls 350, 352, 360, and 362, and bearings that rotatably support the transmission shaft 312 and roll rotation shafts 342 and 344 described above are also provided as appropriate.

A bracket or connecting arm 410 is provided on the side of the case 400 that is perpendicular to the roll rotation shafts 342 and 344 of the rolls 350, 352, 360, and 362, and is used for pulling and changing direction. In addition, a turntable 420 is provided on the top side of the case 400, and a pin hole 422 is provided in the center.

Figure 2 (A) shows the state in which the heavy load transport roller device 100 is installed on the heavy load WA. Usually, it is inserted between the ground and the front, back, left and right four corners of the heavy load WA. The heavy load transport roller device 100 with the motor described above is installed on the front side in the transport direction of the heavy load WA. However, only the roll section 300 is sufficient on the rear side. The heavy load transport roller devices 100 on the left and right sides on the front side are driven simultaneously by the remote control 212. The control signal output from the remote control 212 may be supplied to the two heavy load transport roller devices 100 via a cable, or may use short-range wireless communication such as Bluetooth (registered trademark).

Next, the overall operation of this embodiment will be described. When the operator operates the remote control 212 to instruct, for example, "forward," driving power is supplied from the power supply control unit 210 of the drive unit 200 to the motor unit 220. This causes the drive shaft 224 of the motor 222 to rotate, causing the drive gear 232 and driven gear 234 of the main gear unit 230 to rotate, and the driving force is transmitted to the transmission gear unit 310 of the roll unit 300.

In the transmission gear section 310, the transmission shaft 312 rotates, and further the transmission gears 314 and 316 rotate. When the transmission gear 314 rotates, the rotation gears 322 and 324 of the rotation gear section 320 rotate, and when the transmission gear 316 rotates, the rotation gears 332 and 334 of the rotation gear section 330 rotate. This causes the roll rotation shafts 342 and 344 of the roll section 300 to rotate, and the rolls 350, 352, 360, and 362 to rotate.

In this case, in this embodiment, one end of the rolls 350, 352 is supported by the rotating gears 322, 332, and the other end is supported by the bearing 354. Also, one end of the rolls 360, 362 is supported by the rotating gears 324, 334, and the other end is supported by the bearing 354. Therefore, even if a large load is applied between the roll rotating shafts 342, 344 and the rolls 350, 352, 360, 362 by the heavy load WA, the roll rotating shafts 342, 344 rotate smoothly, and the rolls 350, 352, 360, 362 rotate as a whole. Therefore, the heavy load WA is transported stably and smoothly. Also, when transport is stopped, the entire rolls 350, 352, 360, 362 stop smoothly.

Next, with reference to FIG. 2B, a second embodiment of the present invention will be described. In this embodiment, an internal gear unit 370 is provided instead of the bearing 354 of the first embodiment. That is, the internal gear unit 370 is provided on the opposing side of the rolls 350 and 352 (the end opposite to the end where the rotating gears 322, 324, 332, and 334 are provided). The same is true for the rolls 360 and 362. The internal gear unit 370 is composed of an inner gear 372 provided on the roll rotation shafts 342 and 344 and an outer gear 375 provided on the roll core 374 on the inner periphery of the rolls 350, 352, 360, and 362. When the roll rotation shafts 342 and 344 rotate, the inner gear 372 rotates, and the outer gear 375 meshing with it rotates. That is, when the roll rotation shafts 342 and 344 rotate, one end of the rolls 350, 352, 360, and 362 rotates by the rotating gears 322, 324, 332, and 334, and the other end of the rolls 350, 352, 360, and 362 rotates by the internal gear portion 370. That is, both ends of the rolls 350, 352, 360, and 362 are rotated.

To explain the operation of this embodiment, the rolls 350, 352, 360, and 362 are provided with an internal gear portion 370, so when the roll rotation shafts 342 and 344 rotate, the inner gear 372 rotates, and then the outer gear 375 rotates. This causes the rolls 350, 352, 360, and 362 to rotate. That is, according to this embodiment, the roll 350 is driven to rotate by the rotation gear 332 at one end and the inner gear 372 at the other end. The same is true for the rolls 352, 360, and 362. Therefore, even if a large load is applied between the roll rotation shafts 342 and 344 and the rolls 350, 352, 360, and 362 by the heavy load WA, the twist generated in the roll rotation shafts 342 and 344 is reduced, and the rolls 350, 352, 360, and 362 rotate as a whole. Therefore, the heavy load WA is transported stably and well. In addition, when transport is stopped, the entire rolls 350, 352, 360, and 362 come to a smooth stop.

Next, referring to FIG. 3, a third embodiment of the present invention will be described. This embodiment is an example in which the direction of the heavy-duty transport roller device 100 is changed by using a bracket 410 provided on the side of the case 400 of the heavy-duty transport roller device 100. FIG. 3(A) shows the state seen from the side, and FIG. 3(B) shows the state seen from the top. As shown in these figures, a roughly L-shaped handle 430 is prepared, and the bent part at the tip is inserted into the hole of the bracket 410 of the case 400. Then, the worker holds the end of the handle 430 and changes the heavy-duty transport roller device 100 to the desired direction. At this time, the heavy weight WB is placed on the turntable 420 of the heavy-duty transport roller device 100, so that it can be easily operated by the handle 430. The bracket 410 can be used appropriately, such as by inserting a connecting shaft (not shown) through the hole to connect it, or by towing it.

Next, a fourth embodiment of the present invention will be described with reference to FIG. 4. (A-1) and (A-2) of the same figure show a case where a heavy object WC is rotated on the turntable 420 of the heavy object transport roller device 100. (B) of the same figure shows a case where a pin hole 442 is provided on the bottom surface of the heavy object WC. Depending on the heavy object, a pin hole 442 may be provided for positioning, on the assumption that it will be transported by the heavy object transport roller device 100. In such a case, a pin 440 is inserted between the pin hole 422 on the turntable 420 and the pin hole 442 on the heavy object transport roller device 100 side. This allows the heavy object transport roller device 100 to be well positioned relative to the heavy object WC.

The present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the scope of the present invention. For example, the following modifications are also included.
(1) In the above embodiment, four rolls are provided, but the number may be increased. In the example of Fig. 1(B), both ends of the roll are gear-driven, but this does not prevent gear driving at the intermediate position of the roll.

According to the present invention, one end of the roll is rotated by the rotating gear section, and the other end is supported by a bearing or rotated by an internal gear section. Therefore, even if a heavy load is applied between the roll rotation shaft and the roll due to a heavy object, the twisting generated in the roll rotation shaft is reduced, and the multiple rolls rotate as a whole. As a result, heavy objects can be transported stably and well, making it ideal for transporting heavy objects.

100: Heavy-duty transport roller device 200: Driving section 210: Power supply control section 212: Remote control 220: Motor section 222: Motor 224: Driving shaft 230: Main gear section 232: Driving gear 234: Driven gear 300: Roll section 310: Transmission gear section 312: Transmission shaft 314, 316: Transmission gears 320, 330: Rotating gear section 322, 324, 332, 334: Rotating gear 340: Roll row 342, 344: Roll rotation shaft 350, 352, 360, 362: Roll 354, 356: Bearing 370: Internal gear part 372: Inner gear 374: Roll core 375: Outer gear 378: Outer ring 400: Case 402: Partition 410: Bracket 420: Turntable 422: Pin hole 430: Handle 440: Pin 442: Pin hole GD: Ground WA, WB, WC: Heavy object

Claims (4)

The device includes a drive unit and a roll unit.
the drive unit includes a power supply control unit that controls the supply of driving power, a motor unit including a motor driven by the power supplied from the power supply control unit, and a main gear unit that transmits the driving force of the motor;
the roll unit includes a transmission gear unit that transmits a driving force from the main gear unit, a rotation gear unit that transmits the driving force of the transmission gear unit to a roll rotation shaft, and a roll train including a plurality of rolls through which the roll rotation shaft passes,
the transmission gear portion includes a transmission shaft that is rotated by a driving force from the main gear portion, and transmission gears that are provided on both ends of the transmission shaft and rotate together with the transmission shaft,
the rotating gear unit includes a rotating gear that receives a driving force from the transmission gear to rotate the roll rotating shaft at both ends,
A bearing is provided at an end of the rolls opposite to an end where the rotary gear is provided,
A heavy-duty transport roller device characterized in that one end of each of the rolls is rotationally driven by the rotating gear, and the other end is rotatably supported by the bearing relative to the roll rotation shaft. An internal gear portion is provided instead of the bearing,
The internal gear portion includes an inner gear provided on the roll rotation shaft and an outer gear provided on an inner circumference of the roll,
2. The heavy-duty transport roller device according to claim 1, wherein one end of each of the rolls is rotationally driven by the rotating gear portion, and the other end of each of the rolls is rotationally driven by the internal moving gear portion. The heavy-duty transport roller device according to claim 1 or 2, characterized in that a turntable is provided on the upper surface of the case in which the drive unit and roll unit are housed. The heavy-duty transport roller device according to claim 3, characterized in that the turntable is provided with pin holes for inserting pins for positioning the turntable relative to the heavy-duty side.

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