JPS59321Y2 - Free wheel rotation device - Google Patents

Description

[Detailed description of the invention] This invention allows a transport vehicle with swivel wheels to travel in the opposite direction while being guided by a grooved rail to easily change the direction of the swivel wheels to smoothly move in the opposite direction. This invention aims to provide a free wheel rotation device that is simple in structure and highly effective.

As shown in Fig. 1, a transport vehicle 2 having wheels 1 that can change direction freely is guided by grooved rails 3 as shown in Fig. 2 and moved along a fixed route, which is widely used for transporting materials within a factory. has been done.

In this case, the other wheels 1a do not need to be swivel wheels, so wheels with fixed directions are used in most cases, but all wheels 1a can also be swivel wheels.

In this way, when the wheels are loosely sandwiched between the grooved rails 3 and the carrier is moved along the rails, the direction of the flexible wheels 1 cannot be changed when the carrier is moved backwards.

Compared to the case where the carrier vehicle is advanced to the left in the state shown in FIG. 1, if the vehicle continues to advance to the right, the friction between the free wheel and the rail side wall increases, and the running resistance increases by about twice as much.

In addition, this kind of equipment that uses a transport vehicle while moving it forward and backward along a channel-shaped rail is widely used as shown in the example below.

Figure 3 shows grooved rails 3 installed parallel to the same floor surface.
A trolley 4 equipped with a grooved rail 3a that can be connected to the rails 3 is moved in a direction perpendicular to each rail 3 by the rail 5, and the transport vehicle transferred from one rail to the trolley 4 is transferred to the other rail by moving the trolley. Figure 4 shows different floors, for example 1.
Channel rails 3, 3 provided on the floor 6 of the first floor and the floor 7 of the second floor
An example is shown in which the transport vehicle 2 is moved by the elevator 8 during this period.

In both cases, the transport vehicle transferred to the new rail will proceed against the natural direction of the swivel wheels 1.

In order to change the direction of the flexible wheels and move them forward, as shown in FIG.
It would be possible to return the carrier to the rail 3 after rotating it by 0 degrees, but installing such a rotating platform would require high equipment costs, require a large space to install, and make it difficult for the carrier to travel. This is disadvantageous because it reduces work efficiency due to interruptions.

The present invention provides a turning device in which the direction of the free wheel can be easily changed by widening a part of the grooved rail.

Embodiments of the free wheel rotation device of the present invention will be described below with reference to FIG. 6 and subsequent drawings.

In the first embodiment shown in Figs. 6 and 7, a wide rail 11 is provided between ordinary grooved rails 3.3 and a side wall 10 is attached to form a turning device, and the rails 3, 11 are connected. be.

Reference numeral 12 indicates a bracket attached to the side wall for fixing the side wall 10 to the floor.

The width W between the side walls 10 on both sides is preferably as small as possible within the range in which the eccentricity a as shown in FIG. 12 and the wheel radius can be changed freely.

Although it depends on the height of the side wall 1o, it is preferable to decide based on w=a+b.

The front end 10a of the side wall 10 in the reverse direction is gently inclined in order to lightly contact the swivel wheel 1 and guide it into the grooved rail 3, and the rear end 10b of the side wall 10 in the reverse direction is inclined gently. The grooved rail 3 is sloped and narrowed so as not to interfere with the wheel 1 moving backward while turning, and to allow the wheel to smoothly enter the grooved rail 3 when returning again.
Connect to.

In the example shown in Figure 6, a transport vehicle that has been traveling from left to right is traveling backwards to the left, but a wide rail that is symmetrical to this is installed at the left end of rail 3. The vehicle is provided with wheels that rotate when returning to the right, allowing the vehicle to move smoothly in either the left or right direction.

Alternatively, if both ends of the side wall surface of the wide rail 11 are formed into gently sloped front ends 10a, 10a as shown in FIG. 8, the swivel wheels can be changed when reversing in any direction.

9 and 10 show a second embodiment of the device of the present invention.

In this embodiment, the side wall 10.10 of the wide rail 11, which is a turning device, is pre-attached on the board 13, unlike the first embodiment, in which the side wall 10.10 is attached directly to the floor of a factory or the like. On the other hand, the installation was designed to facilitate construction work.

A long hole in the width direction is formed in the upper surface of the board 13 corresponding to the bracket 12 so that the side wall 10 can be moved in the width direction and attached to the board with bolts.
The device can be assembled in advance by adjusting the width W of both side walls 10 and 10 according to the size of the swivel wheel 1, and the board can be simply mounted on the floor, making installation work easier. .

Of course, long holes may be formed in the bracket 12 and circular holes may be formed in the substrate 13.

Both sides of the substrate 13 are bent downward to form leg pieces 13a,
When installing on the side wall, make sure that the bolts do not touch the floor.

The substrate 13 and the side wall 10 may be joined by welding.

FIG. 11 shows an example of a rail 3 connected to the above-mentioned turning device with a side wall mounted on a board, in which an L-shaped member 3b is attached to the top surface of a board 14 with bolts, and the side wall 1
Similarly to the case of 0, the groove width can be adjusted by a combination of circular holes and long holes.

Both sides of the base plate 14 are bent downward to form leg pieces 14a having the same height as the leg pieces 13a of the base plate 13 of the turning device.

If these substrates 13, 14 are fixed to the floor, a turning device is formed which guides the carrier and turns the direction of the swivel wheels.

To fix the board to the floor, leg pieces 13a and 14a are embedded in the concrete that makes up the floor, or bolts planted in the floor are inserted into holes (not shown) drilled in the board. Let's do it.

The wide rail 11, which is a turning device, is installed at the position where the free wheel 1 is located or slightly further forward in the reverse direction when the carrier vehicle stops to start reversing.

The free wheel turning device of the present invention is extremely simple, just installing a wide rail in the middle of a grooved rail as described above, so it can be installed at low cost, and it is also possible to use a system that turns the transport vehicle itself. It does not require a large floor space or interrupt the running, and the direction of the wheels can be changed quickly and naturally as the transport vehicle reverses without any special operation, and has practical effects. is large.

[Brief explanation of the drawing]

Figure 1 is a side view of a transport vehicle equipped with swivel wheels, Figure 2 is an enlarged cross-sectional view taken along A-A in Figure 1, and Figure 3 shows a conventional device for moving the transport vehicle to another rail within the same plane. Fig. 4 is a side view showing a conventional device for moving a carrier between rails on different floors, Fig. 5 is a plan view showing a rotary table-type direction changing device, and Fig. 6 is a plan view showing the flexibility of the present invention. A plan view showing a first embodiment of the wheel rotation device, FIG. 7 is an enlarged cross-sectional view taken along line B-B in FIG. 6, FIG. 8 is a plan view showing a modification of the device of the present invention, and FIG. 9 is a second embodiment. A plan view showing an example, FIG. 10 is a CC sectional view of FIG. 9,
FIG. 11 is a sectional view taken along the line DD in FIG. 9 showing a modification of the grooved rail, and FIG. 12 is a side view of the swivel wheel. 1: Swivel wheel, 2: Transport vehicle, 3: Channel rail, 10: Side wall, 10a: Front end, 10b: Rear end, 11: Wide rail.

Claims (1)

[Scope of utility model registration request] A wide rail 11 with opposing side walls 10.10 is provided in the middle of a grooved rail 3 for guiding the movement of a transport vehicle 2 having swivel wheels 1, and the wide rail 11 is located at the front end 10a of the swivel wheels 1 in the reverse direction. Gently slope the front grooved rail 3.
, and the rear end portion 10b is connected to the grooved rail 3 at the rear so as not to impede the rotation of the adjustable wheel 1.