JPH0818552B2 - Conveyor device using trolley - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a carrier device using a carriage, which is a combination of a carriage, a carriage guide means, and a carriage propulsion means.

(Prior Art) As a transfer device of this type, for example, Japanese Patent Application No. 56-24486
As disclosed in Japanese Utility Model Publication No. 57-138814, a pair of front and rear trolley units that engage with engaging rods provided at the front and rear of the carriage are provided, and the trolley unit is provided at the front side. The driven dog is engaged with the pusher on the drive chain side, and the driving chain is configured to transmit the propulsive force to the truck via the pusher, the driven dog, the front trolley unit, and the front engagement rod. Are known.

(Problems to be Solved by the Invention) In the conventional carrier-carrying device using a trolley as described above, since the trolley unit that guides the front part of the trolley gives a propulsive force to the trolley, The present invention is not limited to a chain conveyor-like one disposed below the trolley unit, and since the propulsive force is transmitted from the trolley unit to the trolley via the engaging rod at the front of the trolley, The engaging rod needs to be constructed to be strong enough to withstand it, which is unsuitable for a transport device for transporting a heavy load.

(Means for Solving the Problem) The present invention is to provide a carrier device using a trolley capable of solving the above-mentioned conventional problems, and its configuration is the same as that of the embodiment described later. When indicated by reference numerals, it is composed of a combination of a trolley 1, a trolley guide means, and a trolley propulsion means 37. In the trolley 1, all wheels are free wheels 2, and a pair of front and rear movable links is provided. Pins 5 and 6, lifting and lowering operation means 7 and 8 for each of the connecting pins 5 and 6, and driven parts 36a and 36b provided on the bogie portion other than the connecting pins 5 and 6, the bogie guiding means, Guide rails 30 installed along the traveling route of the carriage, and a pair of front and rear connecting pins that are separately movably supported by the guide rails 30 and are on the side of the carriage 1.
5, 6 are composed of a pair of front and rear guide trolleys 31 and 32 having pin holes 35 to be fitted separately, and the bogie propulsion means 37 is a driven part 36a, 36 on the bogie 1 side.
It has pushers 38, 40 that engage with b.

(Operation of the invention) When the carriage 1 is set in the carriage traveling path and is driven,
The pair of front and rear connecting pins 5 and 6 on the side of the carriage 1 are lowered and fitted into the pin holes 35 of the guide trolleys 31 and 32, respectively. As a result, the carriage 1 becomes movable only along the guide rails 30 that guide the pair of front and rear guide trolleys 31 and 32. In such a state, the pushers 38, 4 of the bogie propulsion means 37 are
By engaging 0 with the driven parts 36a, 36b on the dolly 1 side and propelling the dolly 1, the object to be carried on the dolly 1 can be carried along a predetermined route.

At this time, the pair of front and rear guide trolleys 31 and 32 receives thrust from the side of the carriage 1 not through the carriage propelling means 37 but through the pair of front and rear connecting pins 5 and 6, and is connected to the carriage 1 along the guide rail 30. By traveling integrally, the traveling direction of the carriage 1 is regulated and the carriage 1 is prevented from meandering left and right. In other words, since the bending force due to the propulsive force of the bogie propulsion means 37 does not act on the connecting pin on the dolly 1 side (the connecting pin 5 on the front side), the strength is sufficient to propel the guide trolleys 31 and 32. If there is

When the carriage 1 is separated from the carriage travel path, the pair of front and rear connecting pins 5 and 6 may be lifted by the elevating operation means 7 and 8 to be disengaged from the pin holes 35 of the guide trolleys 31 and 32. Needless to say, the trolley 1 can be separated from the trolley propulsion means 37 in this state. The pair of front and rear guide trolleys 31 and 32 remain on the side of the guide rail 30 as they are.

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

In FIGS. 1 to 4, 1 is a carriage for transportation,
A pair of left and right free wheels 2 are provided near both front and rear ends, and an object-supporting jig 4 that matches an object 3 to be supported, such as an automobile body, is provided at the upper portion, and the middle of each pair of left and right free wheels 2 is provided. The positions are provided with connecting pins 5 and 6, respectively. Reference numerals 7 and 8 are lifting operation means for lifting the connecting pins 5 and 6.

As shown in FIGS. 5 and 6, the swivel wheel 2 comprises a bearing member 9 rotatable around a vertical support shaft, and a wheel 10 pivotally supported by a horizontal support shaft. A mounting board 11 pivotally supported by a vertical support shaft is attached to a lower side of a movable plate 13 whose front end is pivotally supported around a horizontal support shaft 12 so as to be vertically swingable. Reference numeral 14 is a substrate fixed to the carriage 1, and supports the movable plate 13 through a horizontal support shaft 12. The movable plate 13 has a stopper pin 15 whose upper end is fixed to a substrate 14.
The vertical swing range is restricted by the lower end head portion 15a of the base plate 14 and the base plate 14, and is pressed downward by the compression spring 16 loosely fitted to the stopper pin 15 between the base plate 14 and the movable plate 13. There is.

If necessary, a brush-shaped scraper for cleaning the floor surface on which the wheel 10 rolls can be attached to the front end portion 9a of the bearing member 9 projecting forward from the wheel 10.

The free wheel 2 is provided with a means 17 for restricting the wheel 10 in a straight direction. The means 17 is provided only when the movable plate 13 swings downward around the horizontal support shaft 12 in a state where the wheel 10 is in the straight traveling direction as shown by the phantom line in FIG.
The bearing member 9 is adjacent to the rear side edge 9b of the top plate of the bearing member 9.
It is constituted by a stopper 18 that prevents the rotation of the. The stopper 18 is provided so as to project from the substrate 14 while penetrating a through hole 19 provided in the movable plate 13.

As shown in FIG. 8, the connecting pins 5 and 6 are held by a lifting guide 20 fixed to the carriage 1 so that they can be raised and lowered within a certain range, and are urged downward by a compression spring 21. Then, the lower ends of the connecting pins 5 and 6 at the lower limit position are located below the traveling surface of the carriage 1. Reference numeral 22 denotes an L-shaped lever for raising the connecting pins 5 and 6 against the urging force of the spring 21, which is pivotally supported around a support shaft 23 so as to be vertically swingable, and is connected to the connecting pins 5 and 6. Interlocking pin 24 and slot 2
It is linked through 5 and.

The raising / lowering operation means 7, 8 of the connecting pins 5, 6 are pivotally supported about a support shaft 26 so as to be horizontally swingable, and an operation lever 28 which is interlocked with the L-shaped lever 22 by a release wire 27, and this operation lever. And a locking portion 29 that locks 28 at a position corresponding to the ascending limit. Therefore, by swinging the operating lever 28, the L-shaped lever 22 is moved through the release wire 27.
Swings, and the connecting pins 5 and 6 are pulled up against the biasing force of the spring 21. Then, when the lower ends of the connecting pins 5 and 6 reach the ascending limit position which is located above the truck running floor surface by an appropriate distance, the operating lever 28 can be locked to the locking portion 29. Further, by removing the operating lever 28 from the locking portion 29, the connecting pins 5 and 6 are lowered to the lower limit position by the biasing force of the spring 21 with the return swing of the L-shaped lever 22 and the operating lever 28.

As shown in FIG. 2, FIG. 4, FIG. 7, and FIG. 8, a guide rail 30 for a guide trolley is laid on the traveling route of the trolley 1 below the trolley floor. Two guide trolleys 31 and 32 on the front and rear sides of one carriage 1 are movably supported on the guide rail 30 via a supporting horizontal shaft wheel 33 and a steady rest vertical shaft roller 34, respectively. The trolleys 31 and 32 are provided with vertical pin holes 35 into which the connecting pins 5 and 6 are fitted. Therefore, the connecting pin 5,
By lowering 6 to the lower limit position, the lower ends of the connecting pins 5 and 6 are fitted into the pin holes 35 of the guide trolleys 31 and 32, respectively, and the front and rear two positions of the carriage 1 (that is, the connecting pins 5 and 6). The movement path of the position) can be regulated by the guide trolleys 31 and 32.

Next, the propelling means of the trolley 1 will be described.
As shown in FIG. 3 and FIG. 3, the carriage 1 has a plate body projecting downward at a position closer to the front connecting pin 5 than the front-rear center position between the pair of connecting pins 5 and 6. Is provided with a pair of left and right driven parts 36a, 36b. On the other hand, as shown in FIGS. 9 and 10, a bogie propulsion means 37 is arranged at an appropriate position in the bogie traveling route constituted by the guide rail 30. This propulsion means 37 includes a drive chain 39 having a pusher 38 for pushing one driven portion 36a of each carriage 1, a drive chain 41 having a pusher 40 for pushing the other driven portion 36b, and both chains 39, 41. It is composed of servo motors 42 and 43 for individually driving.

According to the trolley propulsion means 37, one pusher 38 drives the trolley 1A at a constant speed through the driven portion 36a to drive the trolley 1 in front of the trolley 1A forward and backward as shown in the figure. While the pusher 38 is propelled at a constant speed, the pusher 38 and the driven portion 36b of the other pusher 40 at a high speed to push the succeeding truck 1B before the pusher 38 comes off the driven portion 36a, and the end of the hole of the preceding truck 1A is driven. The pusher 40 to a constant speed and then the trailing truck 1B leads the leading truck.
1A and the trucks 1 preceding it are driven to be pushed. Then, the pusher 38 separated from the driven portion 36a is moved at a high speed to the starting end position of the rearward drive path, and then the succeeding carriage 1B is moved.
The following trolley following is driven to drive in the same manner as described above. Each trolley 1 is sequentially fed to the starting end position of the rearward drive path by the propulsion means 37 by an appropriate means.

Each trolley 1 propelled by the trolley propulsion means 37 as described above
Is a state in which the pair of front and rear connecting pins 5 and 6 and the pair of front and rear guide trolleys 31 and 32 engaging with the connecting pins 5 and 6 and the guide rail 30 do not meander in a constant traveling path to the left and right, but face each other forward and backward. Will drive at a constant speed. Therefore, it is possible to utilize the trolley-to-car butt traveling route in front of the trolley propulsion means 37 as an assembly line for the transported object 3. A linear motor, for example, can be used as the propelling means for returning each carriage 1 from the end of the assembly line to the position of the carriage propelling means 37.

That is, as shown in FIG. 2 and FIG. 3, secondary conductors 44a, 44b for linear motors are attached to both left and right sides at the bottom of the bogie 1, and the bogie traveling route side is shown in FIG. As shown in FIG. 12, linear motor main bodies 45 facing the secondary conductors 44a and 44b with a minute gap therebetween are arranged at appropriate intervals in the traveling direction, and the linear motor main body 45 and the carriage-side secondary conductors 44a and 44b are arranged. The trolley 1 can be driven at high speed by the propulsive force applied to the trolley 1 by the magnetic action between the trolleys. Also in this case, the direction of the carriage 1 can be restricted by the pair of front and rear connecting pins 5 and 6, the pair of front and rear guide trolleys 31 and 32 engaging with the connecting pins, and the guide rail 30 to prevent the carriage 1 from meandering.

When the carriage 1 is driven by a linear motor as described above, as shown in FIG. 11, a support roller for supporting the carriage 1 at an intermediate position between the linear motor main bodies 45 adjacent to each other in the front and rear direction via the secondary conductors 44a and 44b. Wheels for each free wheel 2 with 46
When leaving 10 idle, the gap between the linear motor main body 45 and the secondary conductors 44a, 44b can be accurately set if the accuracy in the level direction between the support roller 46 and the linear motor main body 45 is taken out. Can be maintained. Further, when the trolley 1 is supported on the floor via the wheel 10 of the swivel wheel 2, or as shown in FIG. 12, a guide rail 47 is laid to support the trolley 1 via the wheel 10 of the swivel wheel 2. At this time, the linear motor main body 45 is supported by a link mechanism 48 or the like so as to be able to move up and down, and the gap regulating rollers 4 that come into contact with the secondary conductors 44a and 44b at both front and rear ends of the linear motor main body 45.
9, the spring bias or the secondary conductors 44a, 44b
The gap regulation roller 49 is configured to abut against the secondary conductors 44a and 44b by the magnetic attraction between the linear motor main body 45 and the linear motor body 45, and the accuracy of the floor surface or the guide rail 47 in the level direction is somewhat low. Both the linear motor body 45 and the secondary conductor 44
It can also be configured so that the gap between a and 44b is kept constant.

When disconnecting the truck 1 from the traveling route, the connecting pins 5 and 6
As described above, the ascending / descending operation means 7 and 8 may be moved up to separate the connecting pins 5 and 6 from the pin holes 35 of the guide trolleys 31 and 32. In this case, a pair of front and rear guide trolleys 31,32
Will remain on the side of the Kaidrail 30.

(Advantages of the Invention) According to the carrier-equipped carrier device of the present invention that can be implemented as described above, two front and rear portions of the carriage, in which all the wheels are free wheels, are respectively connected to each other by connecting pins that can be lifted and lowered freely. Since the carriage is connected to the guide trolley guided by the guide rails, the traveling posture of the carriage can be regulated in a direction parallel to the guide rails. Therefore, the guide slit provided with the connecting pin on the floor surface. Compared with the guide type, the truck can be smoothly moved without causing problems such as noise and wear of the connecting pin even when the truck is driven at a high speed.

Moreover, the greatest feature of the present invention is that the guide trolley that engages with the connecting pin is not provided with a propulsive force to propel the dolly through the connecting pin, but a driven part provided on a dolly portion other than the connecting pin. Since the carriage is configured to be propelled by the pusher and the pusher engaged with the pusher, the push position of the truck by the pusher can be set near the bottom of the truck, which is sufficiently higher than the guide trolley to which the connecting pin is connected. The trolley propulsion means can be freely designed. Further, since the cart driving force does not act on the connecting pin, the connecting pin can be made thin even when the connecting pin is implemented as a device for transporting heavy objects, and there is no fear of breakage of the connecting pin.

Of course, if necessary, the connecting pin can be detached from the pin hole of the guide trolley to separate the dolly from the traveling route, and the dolly can be freely moved on the floor surface using the free wheels.

[Brief description of drawings]

FIG. 1 is a plan view of a bogie, FIG. 2 is a vertical sectional front view showing the bogie and its guide means, and FIG. 3 is a partially cutaway side view of the bogie.
FIG. 4 is a vertical sectional side view showing a connecting pin and a guide trolley of a bogie, FIG. 5 is a vertical sectional side view showing a support structure of a free wheel, FIG. 6 is a transverse plan view of the same, and FIG. 7 is a guide trolley and a connecting pin. FIG. 8 is a vertical cross-sectional side view and a horizontal cross-sectional plan view showing the guide trolley, the connecting pin, and the lifting operation means. FIG. 9 is a schematic vertical cross-sectional side view for explaining the truck push-propulsion means. The same plan view, FIG. 11 and FIG. 12 are vertical cross-sectional front views showing an example in which the carriage is driven by a linear motor. 1 ... Bogie, 2 ... Free wheel, 5,6 ... Connecting pin, 7,8 ...
... Connecting pin up / down operating means, 21 ... Compression spring, 22 ...
… L-shaped lever, 27 …… Release wire, 28 …… Operating lever, 30 …… Guide rail for guide trolley, 31, 32…
… Guide trolley, 35 …… pin holes, 36a, 36b …… driven part, 37 …… trolley propulsion means, 38, 40 …… pusher, 39, 41…
… Drive chain, 42,43 …… Servo motor, 44a, 44b …… Secondary conductor for linear motor, 45 …… Linear motor body.

Claims (1)

[Claims] 1. A trolley, a trolley guide means, and a trolley propulsion means in combination, all wheels of the trolley are free wheels, and a pair of front and rear connecting pins capable of moving up and down, and a lifting operation of each connecting pin. Means and a driven part provided on a carriage portion other than the connecting pin, wherein the carriage guide means is supported by a guide rail that is installed along the carriage traveling path and is separately movably supported on the guide rail. The pair of front and rear guide trolleys each have a pair of front and rear connecting pins on the trolley side, and the trolley propulsion means includes a pusher that engages with the driven portion on the trolley side. A carrier device using a dolly.