JPH0735206B2 - Carrier - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention is provided with a transfer device for transferring an object to be conveyed, which is supported on a floor freely moving carriage, to another conveyor line or the like. The present invention relates to a transfer device that transfers a work position.

(Prior art and its problems) When an object to be conveyed is conveyed to a working position by a free-moving carriage on the floor as described above, conventionally, the moving carriage is directly conveyed to the working position by a manual pushing method by an operator. Was normal. In such a conventional method, not only is it time-consuming to position the movable carriage at the work position, but also the worker enters the work area of the transfer device provided at the work position, which is extremely dangerous. Is. Therefore,
Only after confirming the safety of the worker, the transfer device can be operated and the empty carriage cannot be carried out from the work position, so the cycle time of a series of work becomes long and the work can be performed efficiently. Can not.

In order to solve the above problems, for example, JP-A-55
As described in JP-A-47134, transferring the moving carriage onto a carrier carriage that is self-propelled on a guide rail, transporting it to the work position, and carrying out the movable carriage from the carrier carriage after the work. Although it is conceivable, with this type of conventional equipment,
The guide rails installed above the transport carriage are used to carry the transport carriage to the position directly above the transport carriage or to carry the transport carriage from the position directly above the transport carriage. In addition to the hoisting and lowering platform for lifting the mobile truck necessary for the above, it is necessary to allow the guide rail to escape to the outside of the hoisting route of the truck when the hoisting platform supports and hoists the carriage.

Therefore, a guide rail that can be opened and closed and a drive means for opening and closing the guide rail are required, which not only makes equipment very expensive, but also requires extra time to open and close the guide rail, resulting in a long work cycle time. Become. Also,
In order to use a movable carriage that can freely travel on the floor surface, it is necessary to install the openable / closable guide rail (or a supporting means corresponding thereto) at the same level as the floor surface. A large pit is required over the entire length of the traveling route of the carrier truck so that the truck runs under the floor. In this respect, too, the equipment becomes large-scale, which is not practical.

(Means for Solving the Problem) The present invention is intended to solve the above-mentioned conventional problems, and the features of the problem solving means are designated by the reference numerals of the embodiments described later. In other words, the floor free-moving carriage (3) provided with a plurality of free wheels (4a to 4d), and the carriage (which moves back and forth between the moving carriage receiving position (A) and the working position (B) ( 1) and means for paying out carts (27)
And the wheel guides (32a, 32b), the transport carriage (1) travels between the movable carriage (3) and the floor surface and between the free wheels (4a, 4b) (4c, 4d) on both sides. If possible, it is possible to lift and lower the movable carriage (3) to the height at which each free wheel (4a-4d) floats above the floor surface.
2), and the carriage delivery means (27) engages with the movable carriage (3) in a state where each of the free wheels (4a-4d) is grounded on the floor at the working position (B), and moves the movable carriage (3). It has a pusher (29) for carrying the cart (3) laterally at a right angle to the reciprocating traveling path of the carriage (1), and the wheel guides (32a, 32b) are operated by the cart delivery means (27) to a working position ( It acts on the free wheels (4a, 4c) of the grounding state of the moving carriage (3) conveyed from B) in a right angle sideways direction,
It is characterized in that the free wheels (4a, 4c) are restricted in a direction parallel to the carrying direction.

(Example) Hereinafter, one example of the present invention will be described with reference to the accompanying drawings.

In FIG. 1 and FIG. 2, reference numeral 1 is a carrier, which is supported on a guide rail 2 so as to be capable of reciprocating between a moving carrier receiving position A and a working position B. 3 is a free-moving carriage on the floor, which has free wheels (caster wheels) 4a to 4d at its four corners. Numeral 5 is a moving carriage positioning means, which is wheel guides 6a and 6b for restricting the moving direction by sandwiching the movable wheels 4a and 4b of the moving carriage 3 from both sides, and the movable wheel 4
A pair of left and right stoppers 9 that stop the moving carriage 3 by coming into contact with a wheel guide 7 that is located inside c and 4d and that regulates the moving direction, and an abutting member 8 that projects from the lower side of the moving carriage 3.
(See FIGS. 2 and 9). The wheel guides 6a, 7 are extended to the work position B along the movement path (guide rail 2) of the carrier 1 and the wheel guides 6a are also extended in the opposite direction.

As shown in FIG. 3 to FIG. 5, the carrier vehicle 1 has a pair of left and right drive wheels 10 with a collar and a pair of left and right idler wheels 11 with a flange that engage with the guide rails 2 using a flat bar. On the upper part, a lifting platform 12 for lifting the moving carriage 3 is provided. The pair of left and right drive wheels 10 are attached to both ends of a drive axle 14 which is interlocked with a motor 13, and the rotation of the drive wheels 10 causes the transport carriage 1 to move between a moving carriage receiving position A and a working position B along a guide rail. Drive along 2

The lifting / lowering platform 12 has a pair of lifting / lowering guides 16 fixed on a fixed frame 15 and a pair of lifting / lowering guide rods penetrating the lifting / lowering guides 16 so that the lifting / lowering can only be lifted and the upper end thereof is fixed to the lower side of the lifting / lowering platform 12. 17 are supported so that they can only be moved up and down, are supported laterally on the fixed frame 15 via guide rails 18, and are respectively driven by four lifting cams 21 on a traverse table 20 that is driven by a cylinder unit 19. It is equipped with four cam driven rollers 22 that fit together. Therefore, by laterally moving the traverse table 20 by the cylinder unit 19, the hoisting platform 12 can be infiltrated below the moving vehicle 3 by the hoisting cam 21 and the cam driven roller 22. It is possible to move up and down in parallel between a low position and a high position where the moving carriage 3 is lifted.

At the work position B shown in FIG. 1, as shown in FIG. 6, an elevating transfer device 23 for transferring the object W to be transported on the movable carriage 3 at the work position B is provided. This lifting / lowering transfer device 23 is a conventionally well-known device in which a lifting / lowering body 25 for lifting / lowering along a lifting / lowering guide column 24 is provided with a hanger 26 for opening / closing, and is mounted on the movable carriage 3 at the working position B. The transferred object W is picked up by the hanger 26 and transferred to another transfer line above.

At the work position B, an empty moving carriage 3 is attached to the carrying carriage 1.
A cart payout means 27 for paying out in a lateral direction substantially orthogonal to the movement route (guide rail 2) of FIG. As shown in FIGS. 7, 8, 10, and 11, the dolly payout means 27 includes a pusher 29 movably supported by a guide rail 28 installed along a dolly payout path. A driving chain 30 which is stretched along the guide rail 28 and connected to the pusher 29, and the chain 30.
It is composed of a motor 31 for rotating the wheel in forward and reverse directions, and wheel guides 32a, 32b for restricting the moving direction by sandwiching the free wheels 4a, 4c of the moving carriage 3 as shown in FIG. 1, FIG. 7 and FIG. ing.

Next, the working method will be explained. As shown by the phantom line in FIG.
a, 4b enter between the wheel guides 6a, 6b and the other free wheel 4
The contact member 8 is brought into contact with the stopper 9 by manually pushing it on the floor surface to the moving carriage receiving position A so that c and 4d move along the outside of the wheel guide 7. Then, as shown by the solid line in FIG. 1, the hoisting platform 12 of the carrier truck 1 waiting at the moving truck receiving position A is raised to the high position as described above, so that the hoisting platform 12 causes the moving truck 3 to move to a constant height. Then, the flexible wheels 4a to 4d are lifted from the floor. As a result, the contact member 8 of the moving carriage 3 is disengaged upward from the stopper 9.

When the moving carriage 3 is transferred onto the transport carriage 1, the transport carriage 1 is moved along the guide rail 2 from the moving carriage receiving position A to the working position B as described above. At this time, the free wheels 4a to 4d of the movable carriage 3 floating from the floor surface.
Is brought into sliding contact with the wheel guides 6a and 7 by the carriage 1
Is held in a posture facing the traveling direction of. In order to position the carrier 1 at the working position B, a stopper 33 with which the wheel 11 located on the traveling direction side of the carrier 1 comes into contact may be provided on the guide rail 2 as shown in FIG. I can. When the carriage 1 reaches the working position B in this way, as shown in FIG. 7, the free wheel 4a of the moving carriage 3 is adjacent to the starting ends of the wheel guides 32a and 32b, and the free wheel 4
c is loosely fitted in the intermediate opening 34 of the wheel guide 32a, 32b.

When the object W to be transferred on the moving carriage 3 is carried to the work position B by the carrying carriage 1, the lifting / lowering body 25 of the lifting / lowering transfer device 23
With the hanger 26 open, lower it to the lower limit position,
Then, by closing the hanger 26 and then moving up and down the elevating body 25 again, the object W to be transported on the moving carriage 3 can be picked up by the hanger 26. The transported object W scooped up by the hanger 26 in this manner can be transferred to the upper transfer line by the elevating transfer device 23. On the other hand, by lowering the lifting platform 12 of the transport carriage 1 to the low position as described above, each free wheel 4a of the moving carriage 3 is moved.
~ 4d can be grounded on the floor. In addition, the work of picking up the transferred object W by the elevating and transferring device 23 is performed by the moving carriage 3
You may go after grounding.

After lowering the lifting platform 12 of the transport carriage 1 to the low position, the transport carriage 1 is moved backward from the working position B to the mobile carriage receiving position A and escaped from the lower side of the empty mobile carriage 3. Next, the chain of the moving carriage delivery means 27
When the motor 30 is rotated forward by the motor 31 and the pusher 29 is moved forward along the guide rail 28, the pusher 29 pushes the moving carriage 3 in the right-angled lateral direction. At this time, since the free wheels 4a and 4c of the moving carriage 3 change their directions in the moving direction of the moving carriage 3 (the forward direction of the pusher 29) and automatically enter the wheel guides 32a and 32b, The moving direction of the movable carriage 3 pushed by the pusher 29 is restricted by the wheel guides 32a, 32b and the free wheels 4a, 4c, and it does not meander or come off the pusher 29.

The wheel guide 7 is provided with an opening 35 at a position where the free wheel 4b of the movable carriage 3 passes. In addition, mobile trolley 3
Since the free wheels 4a, 4b of the vehicle pass over the guide rail 2 of the carrier vehicle 1, as shown in FIGS. 7 and 8, at this overpass position, a taper-shaped ride over the left and right sides of the guide rail 2 is performed. It is desirable to install the guide 36 so that the free wheels 4a and 4b can move over the guide rail 2 smoothly.

Although the elevating and lowering transfer device 23 is used as the transfer device, the present invention is not limited to this.

(Operation and Effect of the Invention) The transport apparatus of the present invention can be implemented as described above, and according to the present apparatus of the present invention, the free-moving carriage on the floor on which the transported object is mounted is manually pushed to the working position. It is not necessary to move it, and by simply pushing it by hand to the moving carriage receiving position of the carrying carriage, it is possible to carry the transported object together with this moving carriage to the working position by the carrying carriage. After performing the required work such as transferring the transported object to another transport line at the work position, the moving carriage is discharged in the right-angled lateral direction by the moving carriage discharging means. A necessary working device such as a transfer device can be installed in front of the end of the route, but the greatest effect of the device of the present invention is as follows.

That is, since the floor free moving carriage (3) having a plurality of free wheels (4a to 4d) is used, it is economical as compared with the equipment which requires the use of a dedicated moving carriage. In addition, there is an advantage that the movable carriage (3) can be used for other transportation work.

Then, the transport carriage (1) that lifts and transports the mobile carriage (3) on the lifting platform (12) has the free wheels (4a, 4b) (4c) between the mobile carriage (3) and the floor surface. , 4d), the lifting platform (12) that lifts the moving carriage (3) can move the moving carriage (3) up to the height at which each free wheel (4a-4d) floats above the floor. It suffices if it can be lifted, the lift is only required to be small, and the carrier vehicle (1) can be implemented in a small size and at a low cost, as compared with the case where a lifting platform (12) having a large lift is required.

Further, the movable carriage (3) that is unloaded by the lifting platform (12) of the transport carriage (1) is supported on the floor via free wheels (4a to 4d) so as to straddle the transport carriage (1). Therefore, it is unnecessary to provide an openable / closable guide rail for supporting and guiding the movable carriage (3) and its opening / closing drive means as in the prior art, and the entire facility is very simple and can be implemented at low cost. At the same time, the transport vehicle (1) can start traveling immediately after the moving vehicle (3) is unloaded on the hoisting platform (12), so that the cycle time can be shortened and work efficiency can be improved.

Furthermore, since it is a movable carriage (3) that can freely travel on the floor with the free wheels (4a to 4d), it depends on the direction of each of the free wheels (4a to 4d) when it is lowered onto the floor at the working position. Is a place where the travel route of the moving carriage (3) cannot be determined by the payout means (27) which is simply pushed by the pusher (29), and the intended purpose cannot be achieved. However, in the present invention, the moving carriage (3) Since the traveling direction of the moving carriage (3) is regulated by the wheel guides (32a, 32b) in the right-angled sideways payout route, the structure can be implemented simply by pushing with the pusher (29) and at a low cost. The payout means (27) can now be used.

[Brief description of drawings]

FIG. 1 is a schematic plan view of the entire apparatus, FIG. 2 is a front view showing the relationship between a moving carriage and a carrying carriage at a moving carriage receiving position, FIG. 3 is a longitudinal front view of the carrying carriage, and FIG. FIG. 5 is a vertical sectional side view of the carriage, FIG. 5 is a partially cutaway plan view of the carriage, FIG. 6 is a side view for explaining the transfer work by the elevating transfer device, and FIGS. FIG. 9 is a plan view for explaining the conversion, FIG. 9 is a side view showing a stopper for the moving carriage, FIG. 10 is a vertical cross-sectional side view of a main part showing a state when the carrying carriage reaches the working position, and FIG. 11 is a moving carriage. It is a vertical side view showing the operating state of the payout means. 1 ... Transport vehicle, 2 ... Transport vehicle guide rail, 3 ...
Free-moving dolly on the floor, 4a to 4d ... free wheels, 5 ... moving dolly positioning means, 6a, 6b, 7, 32a, 32b ... wheel guides,
8 ... abutting member, 9 ... stopper, 10 ... driving wheel,
12 ... Lifting platform, 17 ... Lifting guide rod, 19 ... Cylinder unit, 20 ... Traverse platform, 21 ... Lifting cam, 22
...... Cam driven roller, 23 …… Up / down transfer device, 27 …… Movable cart delivery means, 28 …… Pusher guide rail,
29 …… pusher, 30 …… drive chain.

 ─────────────────────────────────────────────────── ─── Continuation of front page (56) Reference JP-A-55-47134 (JP, A) JP-A-53-55870 (JP, A) JP-A-59-20765 (JP, A) JP-A-60- 197517 (JP, A) Actual opening 61-41123 (JP, U) Actual opening 57-61967 (JP, U) Actual opening 62-147617 (JP, U) Actual opening 61-163232 (JP, U) JP-B 57-43805 (JP, B2) JP-B 52-24305 (JP, B2) JP-B 54-13352 (JP, Y2)

Claims (1)

[Claims] 1. A floor free-moving carriage (3) having a plurality of free wheels (4a-4d), and a carriage for reciprocating between a moving carriage receiving position (A) and a working position (B). (1)
, A cart delivery means (27), and wheel guides (32a, 32a
b) and the transport carriage (1) is capable of traveling between the mobile carriage (3) and the floor surface and between the free wheels (4a, 4b) (4c, 4d) on both sides. Lifting platform (1) that can lift (3) to the height at which each free wheel (4a-4d) floats above the floor.
2), and the carriage delivery means (27) engages with the movable carriage (3) in a state where each of the free wheels (4a-4d) is grounded on the floor at the working position (B), and moves the movable carriage (3). It has a pusher (29) for carrying the cart (3) laterally at a right angle to the reciprocating traveling path of the carriage (1), and the wheel guides (32a, 32b) are operated by the cart delivery means (27) to a working position ( It acts on the free wheels (4a, 4c) of the grounding state of the moving carriage (3) conveyed from B) in a right angle sideways direction,
A transfer device that regulates the free wheels (4a, 4c) in a direction parallel to the transfer direction.