JP3622464B2 - Drive device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a drive apparatus for a driven body provided in a moving body that moves by rotating a pair of driven bodies.
[0002]
[Prior art]
Conventionally, as this type of drive device, for example, as shown in FIGS. 7 and 8, there is a drive device 62 that rotationally drives a drive wheel 61 (an example of a driven body) provided in a traveling carriage 60. That is, a pair of left and right drive wheels 61 are disposed on either the front or rear of the traveling carriage 60, and a pair of left and right freely driven wheels 63 are disposed on the other side. The driving device 62 is provided for each of the left and right driving wheels 61, and the driving carriage 60 travels when these driving wheels 61 rotate in a pair of left and right channel-like rails 65.
[0003]
Each of the drive devices 62 includes a motor 66, a drive shaft 67 connected to the drive wheel 61 and rotated by the motor 66, an electromagnetic brake 68 for braking the rotation of the drive shaft 67, and a speed reducer 69. It is configured. The motor 66, the electromagnetic brake 68, and the speed reducer 69 are individually connected and fixed to the traveling carriage 60 by bolts, nuts (not shown), and the like.
[0004]
According to this, by rotating both drive shafts 67 by both left and right motors 66, both drive wheels 61 are driven to rotate in the rail 65, and thus the traveling carriage 60 travels. Further, by stopping both motors 66 and braking the rotation of both drive shafts 67 by both electromagnetic brakes 68, the rotation of both drive wheels 61 is stopped and fixed, so that the traveling carriage 60 is supported by the rail 65. Stops in a locked state and is fixed at the stop position.
[0005]
[Problems to be solved by the invention]
However, in the above-described conventional type, when the traveling carriage 60 is driven, it is necessary to rotate both the left and right drive wheels 61 in synchronism with both motors 66, so that it is difficult to control both motors 66 and the like. Further, when the traveling carriage 60 is stopped, similarly, both the left and right drive wheels 61 need to be braked synchronously with both electromagnetic brakes 68, so that control of the left and right electromagnetic brakes 68 becomes difficult.
[0006]
Further, since both drive wheels 61 are driven by the individual drive devices 62, a mounting space for attaching two motors 66 and two electromagnetic brakes 68 is required between the left and right drive wheels 61. It has been difficult to reduce the interval W between the drive wheels 61.
[0007]
Further, since the motor 66, the electromagnetic brake 68, and the speed reducer 69 are individually connected and fixed to the traveling carriage 60 by bolts, nuts (not shown), etc., it takes time and effort. Furthermore, it is difficult to cope with a case where the distance W between the pair of left and right drive wheels 61 differs depending on the size of the traveling carriage 60.
[0008]
The present invention solves the problem of synchronization of the left and right driven bodies by the motor and brake, can reduce the mounting space, is easy to install, and easily handles even when the distance between the left and right driven bodies is different It is an object of the present invention to provide a drive device that can be used.
[0009]
[Means for Solving the Problems]
In order to solve the above problem, the driving device in the first invention is a driving device for driving a pair of left and right driven bodies,
A motor is housed in a cylindrical housing provided between the two driven bodies,
The drive shaft that is driven to rotate by the motor projects from both sides of the motor through the storage body to both ends of the storage body,
In the storage body, a brake for braking the rotation of the motor and the drive shaft, and a speed reducer for reducing the rotation of the drive shaft are stored in a straight line on the axis of the drive shaft,
The driven body disposed outside the both ends of the storage body is attached to the end of the drive shaft.
[0010]
According to this, since both the driven bodies are rotationally driven by one motor via the drive shaft, it is possible to easily maintain the synchronization during the rotational driving of both driven bodies. Similarly, since both the driven bodies are braked by one brake via the drive shaft, synchronization during braking of both the driven bodies can be easily maintained.
[0011]
Further, it is only necessary to provide a mounting space for mounting one motor and one brake between the two driven bodies, and therefore the distance between the two driven bodies can be reduced.
[0012]
In addition, since the motor, the brake, and the speed reducer are stored in the storage body, the drive device set can be attached collectively by simply mounting the storage body to a moving body such as a traveling carriage, and the mounting is facilitated. Furthermore, since the storage body is a cylindrical member, it can also serve as a reinforcing member that reinforces the moving body such as the traveling carriage.
[0013]
In the drive device according to the second aspect of the present invention, at least one side of the drive shaft is cut and detachably connected by the shaft coupling member, and the shaft coupling member is disposed along the axis of the drive shaft inside the housing. They are arranged in a straight line.
[0014]
According to this, the distance between the left and right driven bodies can be easily changed by removing one of the cut drive shafts from the shaft coupling member and replacing another drive shaft having a different length with the shaft coupling member. be able to. At this time, when the distance between the left and right driven bodies is different because the motor, the brake, the speed reducer, and the storage body remain unchanged, and only one of the cut drive shafts needs to be removed and replaced from the shaft coupling member. But it can be easily handled.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to FIGS.
As shown in FIGS. 5 and 6, reference numeral 1 denotes a slat elevator type conveying device that conveys a load 2 in the vertical direction, and a plurality of endless chain bodies 3, 4 are arranged with a plurality of holding means 5 between them. The slat 6 is held, the slat 6 is in a horizontal posture on the vertical conveyance path 7 to support and convey the load 2, and the slat 6 is returned in a vertical posture on the return path 8. .
[0016]
As shown in FIGS. 2 and 6, each of the chain bodies 3 and 4 is provided on the left and right sides of the outer chain body 3 and the inner chain body 4 as a set. Each chain body 3, 4 is wound around a plurality of sprockets 9-17. Each of the chain bodies 3 and 4 is composed of a driving chain 19 and a moving chain 21 connected to each other in a double (double chain) manner. As shown in FIG. 4, the sprockets 9 to 17 mesh with the drive chains 19 of the chain bodies 3 and 4. Further, as shown in FIGS. 5 and 6, the chain bodies 3 and 4 are rotated in synchronization with a certain direction A by the rotation device 22.
[0017]
As shown in FIGS. 2 and 3, the slat 6 is formed by connecting a plurality of divided plates 26 in a bowl shape, and can be bent in the direction opposite to the direction of the load applied to the support surface 6 a that supports the load 2. It has a simple structure. The front portion of the slat 6 is held by the holding means 5 so as to be relatively movable in the length direction of the moving chain 21 of the outer chain body 3, and the rear portion of the slat 6 is held by the holding means. 5 is held so as to be relatively movable in the length direction of the movement chain 21 of the inner chain body 4.
[0018]
As shown in FIGS. 2 to 4, the holding means 5 is provided with a pair of drive sprockets 27 provided on both the left and right sides of the front portion of the slat 6 and sandwiching the moving chain 21 of the outer chain body 3 from both the front and rear sides. A pair of driving sprockets 29 (an example of a driven body), a freely rotatable roller 28, and a pair of driving sprockets 29 provided on both the left and right sides of the rear portion of the slat 6 to sandwich the moving chain 21 of the inner chain body 4 from both the front and rear sides. An example of a driven body) and a freely rotatable roller 30 are included.
[0019]
Both the drive sprockets 27 mesh with the moving chain 21 of the outer chain body 3, and both the drive sprockets 29 mesh with the moving chain 21 of the inner chain body 4.
[0020]
The slat 6 is provided with one drive device 32 that rotates the left and right drive sprockets 27 and the other drive device 33 that rotates the left and right drive sprockets 29.
[0021]
The one driving device 32 has the following structure.
That is, as shown in FIGS. 1 and 2, a motor 35 is housed in a cylindrical housing body 34, and a drive shaft 36 that is rotationally driven by the motor 35 passes through the housing body 34 from both sides of the motor 35. It passes through and protrudes outward from both ends of the storage body 34. Further, in the housing 34, there are an electromagnetic brake 37 that brakes the rotation of the drive shaft 36, a pair of left and right speed reducers 38a and 38b that reduce the rotation of the drive shaft 36 with gears, and the drive shaft 36. The bearing 39 to receive is accommodated.
[0022]
The two speed reducers 38a and 38b are disposed on both sides of the motor 35, and the electromagnetic brake 37 is disposed between the motor 35 and one speed reducer 38a. The motor 35, the electromagnetic brake 37, and both speed reducers 38a and 38b. And the bearing 39 are linearly arranged along the axis of the drive shaft 36, and the motor 35, the electromagnetic brake 37, and the two speed reducers 38a and 38b are arranged on either the left or right side of the housing 34. It is biased.
[0023]
The drive shaft 36 passes through the motor 35 and has one end inserted into the other speed reducer 38b and the other end passed through the electromagnetic brake 37 and inserted into the one speed reducer 38a. The other speed reducer side drive shaft 36b projecting outward from the other speed reducer 38b to the other end of the housing 34, and one speed reducer side drive shaft 36c projecting from the one speed reducer 38a to the one side. And the other end of the split drive shaft 36d that is detachably connected to the one speed reducer side drive shaft 36c via a coupling 40 (an example of a shaft coupling member).
[0024]
The couplings 40 are linearly arranged along the axis of the drive shaft 36 and are stored in the storage body 34. One end of the storage body 34 is closed by a detachable cover body 41, and one end of the split drive shaft 36 d penetrates the cover body 41 and protrudes outward from one end of the storage body 34. It is received by the bearing 39 provided at 41. The two drive sprockets 27 are attached to the outer end of the other speed reducer side drive shaft 36b and the outer end of the split drive shaft 36d.
[0025]
The storage body 34 is provided with a current collector (not shown) for slidingly contacting a power supply rail (not shown) laid along the trajectories of the chain bodies 3 and 4 to send electric power to the motor 35. It has been.
[0026]
The other drive device 33 is also configured in the same manner as the one drive device 32, and the both drive sprockets 29 are connected to the outer end of the other speed reducer side drive shaft 36b of the other drive device 33 and the split drive shaft 36d. Installed on the outer end.
[0027]
As shown in FIG. 3, brackets 43 are rotatably provided at both front and rear ends of the slat 6 via support shafts 42, and both the driving devices 32 and 33 and the rollers 28 and 30 are connected to the bracket 43. Is held in.
[0028]
As shown in FIGS. 5 and 6, a carry-in conveyor 45 for carrying the load 2 into the slat 6 is provided in front of the lower end portion of the transfer path 7. Further, an unloading conveyor 46 for unloading the load 2 from the slat 6 is provided behind the upper end of the transfer path 7.
[0029]
Hereinafter, the operation of the above configuration will be described.
Each chain body 3, 4 is rotated at a constant speed V in a constant direction A by the rotation device 22. At this time, the motors 35 of both the front and rear drive devices 32, 33 are stopped and the drive shaft 36 is moved by the electromagnetic brake 37. When braking, the rotations of the drive sprockets 27 and 29 are locked, so that the slats 6 are held by the chain bodies 3 and 4 by the holding means 5 and are fixed integrally with the chain bodies 3 and 4. Move in the direction A at a constant speed V.
[0030]
Then, as shown in FIG. 5, the slat 6 rises in a horizontal posture on the conveyance path 7 and returns downward in a vertical posture on the return path 8. The load 2 is transferred onto the slat 6 in a horizontal posture by the carry-in conveyor 45, conveyed upward along the conveyance path 7, and carried out onto the carry-out conveyor 46.
[0031]
At this time, the brakes of the electromagnetic brakes 37 of both the front and rear drive devices 32 and 33 are released and the motor 35 is driven so that the drive sprockets 27 and 29 are forcibly engaged with the moving chain 21. As a result, the slat 6 relatively moves in the length direction of the chain bodies 3 and 4. Thereby, the pitch P between the upper and lower sides of each slat 6 in the conveyance path 7 can be freely increased or decreased according to the height of the load 2.
[0032]
Further, the drive sprockets 27 and 29 are rotated forward with respect to the chain bodies 3 and 4 moving at a constant speed V in the constant direction A, and the slats 6 are moved relative to the chain bodies 3 and 4 at a relative speed Va. When moved in the fixed direction A, the apparent moving speed of the slat 6 is increased to V + Va. Further, when the drive sprockets 27 and 29 are rotated in the reverse direction and the slats 6 are moved relative to the chain bodies 3 and 4 at a relative speed Va in the direction B opposite to the constant direction A, the appearance of the slats 6 is apparent. The upper moving speed is decelerated to V-Va.
[0033]
In this way, the apparent moving speed of the slat 6 is increased more than the rotational speed V of the chain bodies 3 and 4, thereby improving the carrying capacity of the load 2, and the apparent appearance of the slat 6 at the loading / unloading portion. By decelerating the upper moving speed from the rotational speed V of the chain bodies 3 and 4, the delivery timing of the load 2 to the conveyors 45 and 46 can be easily taken.
[0034]
As shown in FIGS. 1 and 2, in one drive device 32, the left and right drive sprockets 27 are rotationally driven by a single motor 35 via a drive shaft 36. Synchronization during rotation can be easily maintained. Similarly, both the left and right drive sprockets 27 are braked by a single electromagnetic brake 37 via the drive shaft 36, so that synchronization during braking of both the drive sprockets 27 can be easily maintained.
[0035]
Further, since the number of the motors 35 and the electromagnetic brakes 37 provided between the two drive sprockets 27 may be one each, the interval W between the two drive sprockets 27 can be reduced.
[0036]
Further, since the motor 35, the electromagnetic brake 37, and the two speed reducers 38a and 38b are all housed in the housing body 34, the housing body 34 is simply attached to the bracket 43 of the slat 6 as shown in FIG. One drive device 32 set is attached together, and the attachment becomes easy. Furthermore, since the storage body 34 is a cylindrical member, it can also serve as a reinforcing member that reinforces the front and rear ends of the slat 6.
[0037]
Further, as shown in FIG. 1, the split drive shaft 36d is removed from the coupling 40, and another split drive shaft 36d having a different length is connected by the coupling 40, whereby the left and right drive sprockets 27 are connected. The interval W can be easily changed. As described above, since the motor 35, the electromagnetic brake 37, the two speed reducers 38a and 38b, and the housing 34 are left as they are, it is only necessary to replace the divided drive shaft 36d. It is possible to easily cope with the case.
[0038]
Further, the same effect as that of the one driving device 32 can be obtained in the other driving device 33.
In the above embodiment, as shown in FIG. 2, both drive devices 32 and 33 are provided on the slat 6, but the drive devices 32 and 33 are not limited to the slat 6 and may be provided on another moving body such as a traveling carriage. Further, only one of the one driving device 32 or the other driving device 33 may be provided.
[0039]
In the above embodiment, as shown in FIG. 1, the driving sprockets 27 and 29 are given as an example of the driven body. However, the sprockets are not limited to sprockets and may be wheels or rollers.
[0040]
In the above embodiment, as shown in FIG. 5, the load 2 is transported in the vertical direction, but may be a transport device that transports the load 2 in the horizontal direction or in the oblique direction.
[0041]
【The invention's effect】
As described above, according to the first aspect of the present invention, both driven bodies are driven to rotate by a single motor via the drive shaft, so that synchronization during the rotational driving of both driven bodies can be easily maintained. . Similarly, since both the driven bodies are braked by one brake via the drive shaft, synchronization during braking of both the driven bodies can be easily maintained.
[0042]
Further, it is only necessary to provide a mounting space for mounting one motor and one brake between the two driven bodies, and therefore the distance between the two driven bodies can be reduced.
[0043]
In addition, since the motor, the brake, and the speed reducer are stored in the storage body, the drive device set can be attached collectively by simply mounting the storage body to a moving body such as a traveling carriage, and the mounting is facilitated. Furthermore, since the storage body is a cylindrical member, it can also serve as a reinforcing member that reinforces the moving body such as the traveling carriage.
[0044]
According to the second aspect of the present invention, by removing one of the cut drive shafts from the shaft coupling member and replacing another drive shaft having a different length with the shaft coupling member, the distance between the left and right driven bodies is increased. It can be easily changed. At this time, when the distance between the left and right driven bodies is different because the motor, the brake, the speed reducer, and the storage body remain unchanged, and only one of the cut drive shafts needs to be removed and replaced from the shaft coupling member. But it can be easily handled.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing a configuration of a drive device according to an embodiment of the present invention.
FIG. 2 is a plan view of a slat provided with a driving device.
FIG. 3 is a side view of a slat provided with a driving device.
FIG. 4 is a diagram showing a configuration of a chain body that meshes with a driving sprocket that is rotationally driven by a driving device.
FIG. 5 is a side view of a transport device having a slat that is moved by the drive device.
FIG. 6 is a perspective view of a transfer device having a slat that is moved by the drive device.
FIG. 7 is a bottom view of a traveling carriage provided with a conventional driving device.
FIG. 8 is a front view of a traveling carriage provided with a conventional driving device.
[Explanation of symbols]
27, 29 Drive sprocket (driven body)
32, 33 Drive device 34 Housing 35 Motor 36 Drive shaft 37 Electromagnetic brakes 38a, 38b Reducer 40 Coupling (shaft coupling member)

Claims (2)

A driving device for driving a pair of left and right driven bodies,
A motor is housed in a cylindrical housing provided between the two driven bodies,
The drive shaft that is driven to rotate by the motor projects from both sides of the motor through the storage body to both ends of the storage body,
In the storage body, a brake for braking the rotation of the motor and the drive shaft, and a speed reducer for reducing the rotation of the drive shaft are stored in a straight line on the axis of the drive shaft,
A driving apparatus characterized in that the driven body disposed outside the both ends of the storage body is attached to an end portion of a driving shaft. Cut at least one side of the drive shaft and detachably connect with the shaft coupling member,
2. The drive device according to claim 1, wherein the shaft coupling members are linearly arranged along the axis of the drive shaft inside the storage body.

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