JP2023054720A - Transport roller device - Google Patents

Abstract

To achieve exact movement and stopping of a heavy object by reducing a time lag of the transmission of a motor driving force to a roller for improved followability.SOLUTION: A transport roller device 100 performs only actions of 'forward', 'retraction' and 'stop' of the transport roller device as a result of four rollers 210BR, 210BL, 210FR, 210FL rotating in the same direction. The axial rotation of motors 310R, 310L are transmitted to rotating shafts 220F, 220B of the rollers through only reduction gears 312R, 312L and axial direction converters 314R, 314L without need for complicated chain mechanism and gear mechanism. Accordingly, the time lag resulting from a play in a chain or the like does not occur, and the axial rotation of the motor is transmitted to the roller, so that start and finish of forward and retraction actions follows the operation of a remote control 400 very well. It is thus possible to exactly transport and install a heavy article to be transported to a desired position.SELECTED DRAWING: Figure 1

Description

TECHNICAL FIELD The present invention relates to an improvement of a conveying roller device used for conveying a heavy object such as a machine tool.

As a conventional conveying roller device, for example, there are electric rollers described in Patent Documents 1 and 2 below. Each of these has two motors to drive rollers located on the left and right sides of the direction of travel. In both cases, left and right turning is performed by rotating the left and right rollers differently. For example, one of the motors rotates forward and the other rotates in reverse.

JP 2017-137153 A JP-A-2003-146235

However, the above-described background art has a complicated mechanism for turning left and right. For example, in Patent Document 1, the driving force of a motor is transmitted to one driving roller using a roller chain, and the driving force is transmitted to another driving roller using a roller chain. . In Patent Document 2, the driving roller is rotated in the same direction or in the opposite direction via an electric clutch. Therefore, a time lag occurs before the driving force of the motor is transmitted to the rollers. Then, it takes some time for the roller device to actually perform the instructed operation after operating the controller or remote control, and the device does not move immediately, or on the contrary, it exceeds the desired position and stops. I have an inconvenience.

The present invention focuses on the above points, and by reducing the time lag in the transmission of the motor driving force to the rollers and improving the followability, it is possible to accurately move and stop heavy objects. for that purpose.

The conveying roller device of the present invention is a conveying roller device that moves in the front-rear direction by means of a plurality of roller means, wherein the roller means has a rotating shaft in a direction orthogonal to the movement direction, and rotates the roller means. The motor means for driving has an axis of rotation in the direction of movement, and the axis of rotation of the motor means is coupled to the axis of rotation of the roller means via an axial changer, and the roller means is driven by the motor means. It is characterized in that the means can be rotated to move only in the front-rear direction.

According to one of the main forms, it is characterized in that a speed reducer is provided between the motor means and the axial converter. According to another aspect, said roller means comprises a front roller and a rear roller, comprising a front roller drive for driving said front roller and a rear roller drive for driving said rear roller. , the front roller drive and the rear roller drive are characterized in that they each include a motor means, a speed reducer and an axial converter. Further, it is characterized in that a power source for driving the motor means and a remote control for driving control are provided in common to the front roller driving section and the rear roller driving section. Further, the housing in which the roller means is accommodated is provided with a blanket for changing the running direction. The foregoing and other objects, features and advantages of the present invention will become apparent from the following detailed description and accompanying drawings.

According to the present invention, the rotation of the motor means is converted by the axial direction converter, transmitted to the rotating shaft of the roller means, and moved only in the front-rear direction. Therefore, the time lag in the transmission of motor drive control is reduced. Followability is improved, and heavy objects can be moved and stopped accurately.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a partially transparent view showing the appearance of a conveying roller device according to Example 1 of the present invention; It is a figure which shows the back surface seen from the arrow F1 direction of the said FIG. 3 is a block diagram showing the functional configuration of the first embodiment; FIG. It is a figure which shows the mode of conveyance in Example 2 of this invention. (A) shows the case of using one conveying roller device, and (B) shows the case of using a plurality of conveying roller devices. It is a figure which shows the mode of direction change in Example 3 of this invention. (A) shows the appearance seen from the side, and (B) shows the appearance seen from the bottom side.

BEST MODE FOR CARRYING OUT THE INVENTION The best mode for carrying out the present invention will now be described in detail based on examples.

FIG. 1 shows the entire conveying roller device of one embodiment of the present invention, and FIG. 2 shows a state seen from the direction of arrow F1 in the figure. In these figures, the transport roller device 100 is configured around a housing 200, and is movable in the forward direction indicated by the arrow FF and the rearward direction indicated by the arrow FB. A front roller drive section 300R is provided on the right side of the housing 200 in the front direction, and a rear roller drive section 300L is provided on the left side of the housing 200 in the front direction.

The housing 200 has a front surface 202F, a right side surface 202R, a left side surface 202L, a rear surface 202B, and an upper surface 202U. A partition 204 that divides the space into the left and right is provided at an intermediate position between the left and right. Brackets or connecting arms 240FR, 240FL, 240BR, and 240BL are provided on the front surface 202F and the rear surface 202B, one pair each on the front and rear sides, and these are used to pull and change directions. Furthermore, a turntable 250 is provided on the upper surface 202U of the housing 200, and a pin hole 252 is provided in the center thereof.

Four rollers are provided in such a housing 200 . First, front rollers 210FR and 210FL are provided on the front side, and rear rollers 210BR and 210BL are provided on the rear side. The front rollers 210FR and 210FL are rotationally driven by a front rotating shaft 220F penetrating them, and the rear rollers 210BR and 210BL are rotationally driven by a rear rotating shaft 220B penetrating them. there is Both the front rotating shaft 220F and the rear rotating shaft 220B rotatably pass through the partition 204 of the housing 200 .

The front rotating shaft 220F is rotationally driven by the front roller driving section 300R, and the rear rotating shaft 220B is rotationally driven by the rear roller driving section 300L. Of these, the front roller drive section 300R includes a motor 310R, a speed reducer 312R, and an axial direction converter 314R, and the rear roller drive section 300L includes a motor 310L, a speed reducer 312L, and an axial direction converter 314L. there is Driving power is supplied to the motor 310R from the power supply unit 316, and driving power is supplied to the motor 310L from the power supply unit 316 via the connection unit 318. In other words, the power supply unit 316 is provided commonly to the motors 310R and 310L, and is supplied with the same drive power.

FIG. 3 shows the functions of the above units. The shaft rotation of the motor 310R driven by the power supply unit 316 is decelerated by the reduction gear 312R, and the direction of the rotation shaft is converted in the orthogonal direction by the axial direction converter 314R so that it is transmitted to the front rotation shaft 220F. It has become. As a result, the front rollers 210FR and 210FL are rotationally driven. Similarly, the shaft rotation of the motor 310L driven by the power supply unit 316 is decelerated by the speed reducer 312L, further the direction of the rotation shaft is converted in the orthogonal direction by the axial direction converter 314L, and transmitted to the rear rotation shaft 220B. It is designed to be Thereby, the rear rollers 210BR and 210BL are rotationally driven.

A remote controller 400 is connected to the power supply unit 316 , and driving power is supplied from the outside to the power supply 316 via the remote controller 400 . The remote controller 400 is used to instruct the motors 310R and 310L to be turned ON/OFF and to rotate forward/reverse, so that the front rollers 210FR/210FL and the rear rollers 210BR/210BL are controlled to rotate forward/reverse/stop. It's becoming

Next, the overall operation of this embodiment will be described. For example, if an operator operates the remote controller 400 to instruct "forward", the rotation of the motors 310R, 310L is reduced by the reduction gears 312R, 312L and transmitted to the axial direction converters 314R, 314L. The axial direction converters 314R and 314L convert the direction of the rotating shaft to the roller direction. Thereby, the rotation of the motor 310R is transmitted to the rotation shafts 220F of the front rollers 210FR and 210FL, and the rotation of the motor 310L is transmitted to the rotation shafts 220B of the rear rollers 210BR and 210BL. Therefore, the front rollers 210FR and 210FL and the rear rollers 210BR and 210BL all rotate in the same direction, and the conveying roller device 100 advances forward as indicated by the arrow FF.

On the other hand, when the remote controller 400 is instructed to move backward, the motors 310R and 310L rotate in the reverse direction, and the conveying roller device 100 moves backward as indicated by the arrow FB opposite to the above-mentioned forward movement. When "stop" is instructed by remote control 400, motors 310R and 310L stop, front rollers 210FR and 210FL and rear rollers 210BR and 210BL stop rotating, and transport roller device 100 stops.

As described above, in this embodiment, the four rollers rotate in the same direction, and only the "advance", "retreat" and "stop" operations of the conveying roller device 100 are performed. For this reason, there is no complicated chain mechanism or gear mechanism as in the background art described above, and the shaft rotation of the motors 310R and 310L rotates the rollers only through the reduction gears 312R and 312L and the axial direction converters 314R and 314L. It is transmitted to shafts 220F and 220B. As a result, the rotation of the shaft of the motor is transmitted to the rollers without any time lag caused by the play of the chain or the like, and the start and end of the forward/backward movement follow the operation of the remote controller 400 extremely well. . Therefore, a heavy object to be conveyed can be accurately conveyed and installed at a desired position.

Next, Embodiment 2 of the present invention will be described with reference to FIG. This embodiment shows an example of transportation. FIG. 1A shows a case where one transport roller device 100 is used to transport a heavy object WA, and FIG. is used to transport a heavy object WB.

The example of FIG. 1A shows a case where one conveying roller device 100 is used and a heavy object WA is placed on it and conveyed. The heavy object WA is placed on the turntable 250 of the transport roller device 100 . When the operator operates the remote control 400, the conveying roller device 100 moves in the front-rear direction on the ground (floor surface) GD, and the heavy object WA is conveyed.

In the example of FIG. 1B, two transport roller devices 100 and two driven roller devices 101 are used to transport the heavy object WB. The driven roller device 101 does not have the front roller driving section 300R, the rear roller driving section 300L, the power supply unit 316, and the connection unit 318 as compared with the conveying roller device 100. , 210BL. In the illustrated example, the transport roller device 100 is behind the heavy load WB, and the driven roller device 101 is in front of the heavy load. When the operator operates the remote controller 400, the conveying roller device 100 moves in the front-rear direction on the ground GD, and the driven roller device 101 similarly moves, thereby conveying the heavy load WB.

Some heavy objects WB are provided with positioning pin holes (not shown) on the premise that they will be conveyed by the conveying roller device 100 and the driven roller device 101 . In such a case, by inserting a pin between the pin hole 252 on the turntable 250 and the pin hole on the side of the object to be conveyed, the conveying roller device 100 and the driven roller device 101 can be smoothly moved to the heavy object WB. can be positioned.

Next, Embodiment 3 of the present invention will be described with reference to FIG. This embodiment is an example of changing the direction of the transport roller device 100 using brackets 240FR, 240FL, 240BR, and 240BL provided on the front and back of the housing 200 of the transport roller device 100. FIG. FIG. 1(A) shows a side view, and FIG. 1(B) shows a top view. As shown in these figures, a substantially L-shaped handle 410 is prepared, and the bent portion at the tip thereof is inserted through the holes of the brackets 240BR and 240BL of the housing 200 . Then, the operator holds the end of the handle 410 and changes the conveying roller device 100 to a desired direction. At this time, since the heavy object WC is placed on the turntable 250 of the conveying roller device 100, the handle 410 can be easily operated. The brackets 240FR, 240FL, 240BR, and 240BL can be appropriately used for connection by inserting a connection shaft (not shown) through a hole, or for pulling.

<Other Embodiments> The present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the gist of the present invention. For example:
(1) In the above embodiment, four rollers are provided, two in the front and the back, but the number may be increased or decreased as necessary. For example, using rollers long in the direction of the rotation axis, one front roller and one rear roller may be used, or three or more rollers may be connected to form a total of six rollers.
(2) In the above embodiment, the rear rotary shaft 220B is provided to pass through the rear rollers 210BR and 210BL. . By doing so, it is possible to reduce the labor of assembly in the manufacturing process. The same applies to the front rotating shaft 220F.
(3) If the motors 310R and 310L are equipped with reduction gears, the reduction gears 312R and 312L can be omitted, but the overall function is substantially the same.

According to the present invention, the rotation of the motor means is converted by the axial direction converter, transmitted to the rotating shaft of the roller means, and moved only in the front-rear direction. Therefore, the time lag in the transmission of motor drive control is reduced. Followability is improved, and heavy objects can be moved and stopped accurately, making it suitable for transporting heavy objects.

100: Conveying roller device 101: Driven roller device 200: Case 202B: Rear surface 202F: Front surface 202L: Left surface 202R: Right surface 202U: Upper surface 204: Partitions 210BR, 210BL: Rear rollers 210FR, 210FL: Front roller 220B: Rear rotation Axle 220F: Front rotating shafts 240FR, 240FL, 240BR, 240BL: Bracket 250: Turntable 252: Pin hole 300L: Rear roller drive unit 300R: Front roller drive unit 310R, 310L: Motors 312R, 312L: Reduction gears 314R, 314L: Axial direction converter 316: Power supply unit 318: Connection unit 400: Remote controller 410: Handle GD: Ground WA, WB, WC: Heavy objects

Claims (5)

A conveying roller device that moves in the front-rear direction by a plurality of roller means,
The roller means has a rotation axis perpendicular to the direction of movement,
the motor means for rotationally driving the roller means has a rotating shaft in the moving direction;
coupling the rotating shaft of the motor means to the rotating shaft of the roller means through an axial converter;
A conveying roller device, wherein the roller means is rotated by the motor means so as to be movable only in the front-rear direction. 2. The conveying roller device according to claim 1, further comprising a reduction gear provided between said motor means and said axial direction converter. said roller means comprises a front roller and a rear roller;
A front roller drive section for driving the front roller and a rear roller drive section for driving the rear roller,
3. A transport roller assembly as claimed in claim 2, wherein the front and rear roller drives each include a motor means, a speed reducer and an axial changer. 4. The conveying roller device according to claim 3, wherein a power source for driving said motor means and a remote control for driving control are provided in common for said front roller driving section and said rear roller driving section. The conveying roller device according to any one of claims 1 to 4, wherein a housing in which said roller means is accommodated is provided with a blanket for changing the running direction.

Images