JPS61241256A - Push-pull type shifter - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] Technical Field The present invention provides for a second slider disposed on a truck to be moved at a faster speed than the first slider. It relates to a push-pull type transfer device that slides and transfers a pallet on which a predetermined cargo is loaded between a cart and a loading table located near the cart using an engaging claw, and in particular, the second The present invention relates to a transfer device in which the weight of a slider is reduced, the energy efficiency required for its operation is improved, and the mounting table can be configured simply.

BACKGROUND ART A trolley that loads and transports a predetermined load, such as an automatic guided vehicle or a lifting platform for a stacker crane, is equipped with a transfer device for loading the load onto the truck or unloading the load from the truck. There are things that are. Such a transfer device generally includes a first slider that is reciprocated in one horizontal direction on a trolley, and is movably supported by the first slider, and as the first slider moves, it moves at a faster speed than the first slider. and a second slider that is moved in the same direction in the same direction, and the second slider is moved between an original position located on the truck and a protruding position in which it projects from the truck in the one horizontal direction. The cargo is transferred between the cart and a mounting table located near the cart in the one horizontal direction.

The device described in Japanese Utility Model Application Publication No. 49-145385 is one example.

In one type of such a transfer device, the second slider is provided with an engaging claw, and the engaging claw is engaged with a pallet on which a predetermined cargo is loaded, and the pallet is slid together with the second slider. There is also a push-pull type in which the pallet is transferred between the cart and the mounting table by being pulled onto the cart or pushed out from the cart.

Problems to be Solved by the Invention However, in the push-pull type transfer device, in order to move the pallet in both directions in the one horizontal direction, there are Since the engaging claws must be engaged, it is necessary to make the length of the second slider in the first horizontal direction longer than that of the pallet, and provide engaging claws at both ends of the second slider. This increased the weight and energy efficiency required for its operation. In addition, when transferring the pallet, the second slider is inserted deeper into the mounting table than the length dimension of the pallet in the horizontal direction, so the length of the pallet must be adjusted to allow the insertion of the second slider. It was necessary to provide the mounting table with an insertion section that was longer than the dimensions. Furthermore, the conventional push-pull type transfer device described above transfers the pallet by engaging the engaging claws at both ends of the pallet, so multiple pallets are placed in close contact with each other on the loading table. In this case, it is difficult to engage the engaging pawl with the end portion, and it is inconvenient that it cannot be transferred.

On the other hand, since the above-mentioned engaging claws have conventionally been fixedly attached to the second slider, it is necessary to move the pallet up and down when engaging or disengaging the engaging claws from the pallet. A means of moving the pallet up and down must be installed on each of the loading platform installed at the place where the cargo is loaded and the loading platform installed at the place where the cargo is unloaded from the trolley, making the loading platform complicated and expensive. It also included the issue of becoming.

Means for Solving the Problems The present invention has been made to solve the above problems, and its gist is that the invention comprises the first slider and the second slider, and that the second slider has a In a push-pull type transfer device that slides and transfers a pallet on which a predetermined cargo is loaded between a cart and a loading table using a provided engaging claw, the pallet is provided with an engaging claw that can be engaged with the engaging claw. While providing a matching hole, the length of the second slider in the one horizontal direction is made shorter than that of the pallet, and the engaging claw is at an engaging position where it can be engaged with the engaging hole and is not able to engage. This is because a pawl moving means is provided for moving the device to the retracted position.

Operation and Effects of the Invention In such a transfer device, the second slider is moved while the engaging claw is in the retracted position! 12, the engaging claw is moved to the engaging position by the claw moving means to engage with the engaging hole of the pallet, and in this state, the second slider is moved to its original position on the cart. The pallet on the mounting table is pulled onto the cart and transferred. In addition, after the pallet has been transported to a predetermined position by such a cart, when transferring the pallet onto the mounting table,
After moving the second slider and pushing out the pallet onto the mounting table, the claw moving means moves the engagement claw to the retracted position to release the engagement with the engagement hole of the pallet, and in this state, the second slider All you have to do is move it to its original position.

Here, since the above-mentioned engaging claw engages with the engaging hole of the pallet to move the pallet, it is necessary to engage the engaging claw with both ends of the pallet in the one direction as in the conventional case. Therefore, the length of the second slider provided with the engaging claw can be made shorter than that of the pallet. That is, the second slider in the present invention only needs to have a length dimension that can be movably supported by the first slider, and the weight of the second slider is significantly reduced to make it possible to move it. Improves energy and efficiency when

In addition, the second slider is inserted into the mounting table when transferring the pallet, but the insertion amount decreases as the length dimension of the second slider decreases, so the insertion of the second slider is allowed. Therefore, the length of the insertion portion provided on the mounting table can be shortened, and the structure of the mounting table can be simplified. especially,
In the present invention, the engagement claw is moved by the claw moving means to engage and disengage the engagement claw with the engagement hole of the pallet.
There is no need to provide a moving means for moving the pallet up and down on each mounting table, and the mounting table can be constructed more simply and at a lower cost.

Further, the transfer device of the present invention moves the pallet by engaging the engagement claw with the engagement hole provided in the pallet, so that the plurality of pallets are tightly placed on the mounting table. Even when the pallet is placed on the pallet, the engaging pawl can be engaged with the engaging hole to transfer the pallet in a good manner.

EXAMPLE Hereinafter, an example of the present invention will be described in detail based on the drawings.

In FIGS. 1 and 2, reference numeral 10 denotes an automatic guided vehicle as a cart, which automatically travels along guide lines laid on the ground or on the floor. This automatic guided vehicle 10 has a control unit 1
2 and a pallet loading section 14 arranged in the left-right direction of the vehicle, the pallet 1 is moved between a plurality of platforms (not shown) and loaded with empty or predetermined cargo 16.
Transport 8. As shown in detail in FIGS. 3 and 4, the pallet loading section 14 is mounted on a pair of U-shaped frames 20 and 20 that are fixed parallel to each other in the left-right direction of the vehicle. A plurality of (six) rollers 2 rotatably provided around an axis parallel to the longitudinal direction of the vehicle.
A pair of roller groups 24, 24 consisting of 2 and a frame 20
．． The pallet 18 has a pair of roller groups 2 on both sides thereof.
It is placed on the automatic guided vehicle 10 while being supported at an angle of 4°24. Further, each of the plurality of platforms is provided with a mounting table 28 shown in FIG.
The pallet 18 is pulled in from the automatic guided vehicle 10.
As the pallet 18 is pushed out, the pallet 18 is automatically transferred between the mounting table 28 and the automatic guided vehicle 10. Note that guide rails 30 and 32 for guiding the pallet 18 are provided on both sides of the pallet loading section 14 and the mounting table 28, respectively.

As is clear from the perspective view of FIG. 6, the transfer device 26 includes a first slider 34 supported by a frame 20.20 so as to be movable in the left-right direction of the vehicle; The second slider 36 is supported so as to be movable in the left-right direction. The first slider 34 includes a rectangular slide plate 38 having substantially the same length as the frame 20, and support plates 40 and 40 erected in parallel to each other on the slide plate 38 along its side edges. Both sides of the slide plate 38 are supported so as to be movable in the longitudinal direction (in the left-right direction of the vehicle) by two types of rollers 42 and 44 provided in large numbers on opposing surfaces of the frame 20 and 20, respectively. has been done. Also,
A rack 46 is attached to the lower surface of the slide plate 38 along the longitudinal direction of the slide plate 38, and is engaged with a pinion 48 disposed at the center in the left-right direction of the vehicle. This pinion 48 is rotatably driven in both forward and reverse directions by a motor 50 disposed within the control section 12, whereby the first slider 34 can be selectively moved in both left and right directions of the vehicle. and are each reciprocated a distance approximately half of its length dimension.

The second slider 36 includes a rectangular body 52 whose length is shorter than the length of the pallet 18 in the transfer direction, and is disposed between both support plates 40 and 40 of the first slider 34. Recesses 54, 54 formed on both sides of 52
is supported so as to be relatively movable in the longitudinal direction (left and right direction of the vehicle) by being engaged with two types of rollers 56 and 58 provided in large numbers on the opposing surfaces of both support plates 40 and 40, respectively. has been done. As shown in FIG. 7, two pins 60 and 60 are provided at the center in the longitudinal direction of the main body 52 so as to be slidable in the vertical direction via sleeves 62 and 62, respectively. . pin 60
．． Racks 64 and 64 are formed in the axial direction on the sides of the pins 60 and 64, respectively, and the pins 60 and 6 are engaged with each other.
A pair of pinions 66 and 66 provided between the pinion 66 and l'L are meshed with each other. These pinions 66
One side of the motor 66 is connected to the motor 6 as shown in FIG.
When the motor 68 is rotated in both forward and reverse directions according to the driving power supplied from the control unit 12, the pinions 66 and 66 are rotated in opposite directions, and the pin 60 is connected to the output shaft 70 of the pin 60. .60 are simultaneously moved in the same direction.

The pins 60.60 constitute engagement claws, which are projected upwardly from the main body 52 to engage the pallet 18 supported on the roller group 24.24, while the main body 52 By being pulled inward, the engagement with the pallet 18 is released. That is, the pallet 18, as shown in FIG.
It has a shape in which a large number of horizontal plates and vertical plates are combined in a grid pattern, and is provided with a large number of rectangular holes 72 that penetrate vertically as engagement holes, and the pins 60 and 60 are inserted into these rectangular holes. 72. In addition,
The racks 64, 64. Pinion 66.66, motor 6
8 and its motor 68.
2 and the like constitute claw moving means for moving the pins 60 and 60 as engagement claws to an engagement position where they can engage with the rectangular hole 72 and a retracted position where they cannot engage.

Returning to FIG. 4, mounting members 74 and 74 are fixedly attached to the frames 20 and 20 near ends opposite to each other in the left-right direction of the vehicle, respectively, and are attached to the main body 52 of the second slider 36. are both sides of the mounting member 74
．． A mounting member 7 is attached to each end of the side where the mounting member 74 is provided.
6.76 is fixedly installed. Further, the first slider 3
The mounting members 74 are attached to the support plates 40 and 40 of No. 4, respectively.
A sprocket 78.78 is rotatably provided at the end opposite to the side where 74 and 76.76 are provided. The mounting members 74 and 74 have chains 80 and 80 meshed with sprockets 78 and 78, respectively.
One end of the chain is attached, and the other end of the chain 80.80 is attached to the attachment member 76.76. Therefore, when the first slider 34 is moved by the motor 50, the chain 80, which has one end attached to the attachment member 74 located on one side of the chains 80. As the first slider 34 moves, the end thereof is moved relative to the second slider 3 at the same speed in the direction of movement of the first slider 34, and one end of the chain 80 is attached to the second slider 3.
6 is eventually moved in the same direction at twice the speed of the first slider 34. Note that, as shown in FIG. 4, the second slider 36 is arranged so that the first slider 34
When the length is between 0.20 and 0.20, the first slider 34 is held at its center, that is, at its original position, and as described above, the first slider 34 can be selectively moved in both the left and right directions of the vehicle. If it is moved half the distance,
As shown by the two-dot chain line in FIG.
0.60 is moved to the protruding position where the first slider 34 reaches the end of the protruding teeth.

In addition, a mounting table 28 disposed on the platform
As is clear from FIGS. 5 and 10, the end on the side where the automatic guided vehicle 10 is placed next to it is cut out to provide an insertion portion 82 that allows insertion of the second slider 36. . Pallets 1 are provided on both sides and the rear of the insertion section 82.
Roller groups 88, 88 and 90 consisting of a large number of rollers 84, 84 and 86, which are rotatably provided around an axis perpendicular to the transfer direction of 8, are roller groups 88, 88 and 90 of roller group 2 of automatic guided vehicle 10.
4 and 24 at approximately the same height. The length of the insertion portion 82 in the transfer direction of the pallet 18 is shorter than that of the pallet 18, and the pallet 18 is supported across the roller groups 88.8B and 90.

The automatic guided vehicle 10 is placed next to such a platform 28 and transfers the pallet 18 to and from the platform 28. For example, the automatic guided vehicle 10 transfers the pallet 18 placed on the platform 28. When transferring onto the automatic guided vehicle 10, first, the pins 60 and 60 provided on the second slider 36 are
The first slider 34 is placed on the mounting table 28 while the first slider 34 is in the retracted position.
By moving the second slider 36 to the side, the second slider 36 is moved from the original position to the protruding position, and the insertion portion 82 of the mounting table 28 is moved.
Insert inside. At this time, the pins 60 and 60 are located near the protruding end of the first slider 34, and this position approximately coincides with the center of the pallet 18 placed on the mounting table 28 in the transfer direction. It is made to be. Therefore, in this state, the pin 60.60 is
When protruding from the main body 52, the pins 60, 60 are respectively inserted into two rectangular holes 72, 72 formed approximately in the center of the pallet 18, as shown in FIG. After that, the first slider 3 is moved by the motor 50.
4 into the automatic guided vehicle 10 side and move the second slider 36 to its original position, the pallet 18 will be moved into its rectangular hole 7.
2.72 and the pin 60°60, the roller 84
22 and pulled onto the automatic guided vehicle 10.

As a result, the pallet 18 on the mounting table 28 is transferred onto the automatic guided vehicle 10.

Further, the automatic guided vehicle 10 loaded with the pallet 18 as described above travels to another platform, where the pallet 18 is placed on a loading table 28 provided on that platform.
When transferring the first slider 34 to the top, the first slider 34 is placed on the mounting table 2 with the pins 60 and 60 still protruding from the main body 52.
By moving the pallet 18 to the 8 side and inserting the second slider 36 into the insertion portion 82 of the mounting table 28, the pallet 18 moves on the rollers 22 and 84 and is pushed onto the mounting table 28. Thereafter, by moving the pin 60°60 to the retracted position by the motor 68, the pin 60°60 and the rectangular hole 7 are removed.
2.72, pull the first slider 34 toward the automatic guided vehicle 10 side, and move the second slider 36 to its original position.
The transfer of the pallet 18 to the terminal is completed.

In this case, the pins 60, 60 are adapted to engage with the rectangular holes 72, 72 in the approximate center of the pallet 18, so that the mounting table 28 where the pallet 18 is loaded
It does not matter whether the automatic guided vehicle 1o is placed sideways to the left or right with respect to the mounting table 28 where the pallet 18 is unloaded. In addition, when the automatic guided vehicle 10 is always placed horizontally on the mounting table 28 in either the left or right direction, the pins 60 and 60 are not necessarily attached to the rectangular holes 70 in the center of the pallet 18.
．． For example, when transferring the pallet 18 on the mounting table 28 onto the automatic guided vehicle 10, it is not necessary to engage the rectangular hole 72 formed at the end of the pallet 18 on the automatic guided vehicle 10 side. .72 may be engaged. Furthermore, the pins 60.60 are movable by the motor 68, and the pallet 18 is formed with a large number of rectangular holes 72, so that the pins 60.60 engage when the pallet 18 is transferred. Transfer can be performed in various ways, such as by sequentially changing the rectangular holes 72, 72 to sequentially feed the pallet 18.

In this way, the transfer device 26 of this embodiment allows the pins 60 and 60 provided on the second slider 36 to engage with the rectangular holes 72 and 72 of the pallet 18.
Since the second slider 36 is designed to be transferred by sliding it, there is no problem even if the length of the second slider 36 is shorter than the pallet 18, and even considering the weight of the Mokuro 8, etc., its weight is considerably large. This increases the energy efficiency of moving it. In addition, the second slider 36
As the length dimension of the second slider 3 becomes shorter, the second slider 3
6 to transfer the pallet 18, the amount of insertion into the mounting table 28 becomes shorter, so the length dimension of the insertion part 82 of the mounting table 28 can be shortened, and the insertion part 82 is arranged on both sides of the insertion part 82. The number of rollers 84° 84 that are placed on the mounting table 2 is reduced.
The structure of 8 is simplified and the mechanical strength is improved.

Furthermore, even if a plurality of pallets 18 are closely placed on the mounting table 28, there is no problem in engaging the pin 60 with the rectangular hole 72, so even in such a case, the pallets 18 can be placed in good condition. It has the advantage of being able to be transferred to

On the other hand, the pin 60 is moved by a motor 68, and by driving the motor 68, the pin 60 is engaged with and disengaged from the rectangular hole 72 of the pallet 18. Therefore, there is no need to provide a moving means for moving the pallet 18 up and down on the mounting table 28 provided on each platform, and the mounting table 28 can be configured more simply and at a lower cost.

Further, the degree of freedom during transfer is increased, such as being able to sequentially feed the pallets 18 as needed, and transfer can be carried out in various ways.

On the other hand, in the conventional push-pull type transfer device, as shown in FIG. 9
2, one of the engaging claws 94 and 94 is engaged with the front end or the rear end of the pallet 96, so that the pallet 96 is transferred between the automatic guided vehicle and the loading table. It had become. Therefore, it is necessary that the length of the second slider 92 is at least less than the length of the pallet 96, and the energy efficiency when moving it is poor, and the length of the insertion part 98 provided on the mounting table must be increased. I had to. Furthermore, if a plurality of pallets 96 are placed in close contact with each other, the pallets 96 would rest on the engaging claws 94, making it impossible to transfer them. Furthermore, in order to engage or disengage the pallet 96 with the engaging claw 94 when transferring the pallet 96, each mounting table is provided with a moving means for moving the pallet 96 up and down. There is a need,
The mounting table was complicated and expensive.

Although one embodiment of the present invention has been described above in detail based on the drawings, the present invention can also be implemented in other embodiments.

For example, in the embodiment described above, the transfer device 26 provided on the automatic guided vehicle 10 was described, but the present invention can be similarly applied to a transfer device provided on other carts such as the lifting platform of a stacker crane. .

Further, in the embodiment described above, two pins 60, 60 are provided at the center of the second slider 36, but the number of pins 60 and the positions at which they are installed may be varied as necessary. For example, if they are provided at both ends of the second slider 36, the dimensions of the insertion portion 82 of the mounting table 28 can be further shortened.

Similarly, the number and position of the rectangular holes 72 provided in the pallet 18 can be variously changed, and it goes without saying that the through holes do not have to be rectangular.

Further, in the embodiment, the second slider 36 is
Although it is designed to protrude in both the left and right directions of 0, it is also possible to make it protrude only in either direction, or in the front and rear directions.

Furthermore, the first slider 34 of the above embodiment has a pinion 48.
However, other linear moving means such as a feed screw may also be used, and the first slider 34 may be moved by more than half of its length from the automatic guided vehicle 10. It is also possible to configure

Further, the second slider 36 of the above embodiment has one end attached to the frame 20 and the intermediate portion thereof is configured to be accelerated by a chain 80 meshed with a sprocket 78.
It is of course possible to use a free roller, a belt, etc. instead of the first slider 34, and as shown in the above-mentioned Japanese Utility Model Publication No. 49-145385, the first slider 34 is provided with an idle gear, and the idle gear It is also possible to employ other speed-up mechanisms, such as one that speeds up the second slider 36 by engaging racks provided on the automatic guided vehicle 10 and the second slider 36, respectively.

Further, in the above embodiment, the pin 60.60 is used as an engaging claw.
Although the pawl moving means for moving the is comprised of a motor 68, pinions 66, 66, etc., the pawl moving means may also be constructed using a pneumatic cylinder, a cam mechanism, or the like.

Furthermore, although the mounting table 28 of the above-mentioned embodiment is arranged in a fixed position on each platform, for example, when the present invention is applied to a lifting platform of a stacker crane, the mounting table 28 can be moved unmanned. It is also possible to arrange the pallet 18 on a transport vehicle or the like so that the pallet 18 can be transported.

Although other examples are not given, the present invention can be implemented with various modifications and improvements based on the knowledge of those skilled in the art without departing from the spirit thereof.

[Brief explanation of the drawing]

FIG. 1 is a side view showing an embodiment of an automatic guided vehicle equipped with a push-pull type transfer device according to the present invention. FIG. 2 is a perspective view of the automatic guided vehicle shown in FIG. 1 from the left side. 3 and 4 are a partially cutaway front view and a plan view, respectively, showing the pallet loading section of the automatic guided vehicle of FIG. 1. FIG. 5 is a perspective view showing a mounting table that transfers the valet/ ) to and from the automatic guided vehicle shown in FIG. 1. Figure 6 is the first
It is a perspective view showing the main part of the transfer device with which the automatic guided vehicle of the figure is equipped. FIG. 7 is a diagram showing a bottle as an engaging claw provided in the transfer device of FIG. 6, and is a sectional view of the second slider. FIG. 8 is a diagram showing the claw moving means for moving the bottle shown in FIG. 7, and is a sectional view of the second slider. 9 is a perspective view of a pallet loaded on the automatic guided vehicle of FIG. 1. FIG. FIG. 10 is a partially cutaway front view showing a state in which the automatic guided vehicle shown in FIG. 1 is placed next to the mounting table shown in FIG. 5 to transfer a pallet. Figure 1) is a partial sectional view showing an example of a conventional push-pull type transfer device and a mounting table. 10: Automatic guided vehicle (truck) 16: Baggage 18: Pallet 26: Transfer device 28: Placement table 34: First slider 36: Second slider 62: Pin (engaging claw) 72: Rectangular hole (engaging hole) Applicant Toyota Motor Corporation Figure 7 Figure 9 Figure 1)

Claims (2)

[Claims] (1) A first slider that is reciprocated in one horizontal direction on a truck, movably supported by the first slider,
a second slider that is moved in the same direction at a faster speed than the first slider as the first slider moves, and the second slider moves between the original position on the truck and the one from the truck. By being moved between the horizontally protruding position and the protruding position, the pallet on which a predetermined cargo is loaded is moved between the cart and the cart adjacent in the horizontal direction by the engagement claw provided on the second slider. In a push-pull type transfer device that slides and transfers between the pallet and the pallet, the pallet is provided with an engagement hole that can engage with the engagement claw, and the length of the second slider in the one horizontal direction is The dimensions of the pallet are shorter than those of the pallet, and a claw moving means is provided for moving the engaging claw between an engagement position where it can engage with the engagement hole and a retracted position where it cannot engage. Push-pull type transfer device. (2) The second slider is selectively protruded to both sides of the truck in the one horizontal direction, and the engagement pawl and the engagement hole are connected to the second slider and the The push-pull type transfer device according to claim 1, wherein the push-pull type transfer device is provided at the center of the pallet in the one horizontal direction.