JPH0241606A - Linear motor conveyor - Google Patents

Abstract

PURPOSE:To reduce the wear of a guide wheel by providing a linear motor truck at a conveying vehicle moving on a conveying rail through a universal joint, engaging the guide wheel provided at the truck with a guide rail intermittently laid, and further providing the secondary side of a linear motor to the guide rail. CONSTITUTION:A conveying vehicle 1 is moved on a conveying vehicle rail 6 via drive wheels 2. A linear motor secondary truck 4 is suspended at the vehicle 1. A linear motor secondary side 7 and a guide wheel 5 are provided at the truck 4. The wheel 5 is engaged with a guide rail 9 intermittently laid. In this case, the vehicle 1 is driven by a thrust between a linear motor primary side 8 provided to the rail 9 and the secondary side 7. Thus, the wear of the guide wheel can be reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a conveyance device driven by a linear motor.

[Conventional technology]

Conventional linear motor conveyance devices are shown in FIGS. 7 and 8.

Figure 7 is a front view showing an example, and Figure 8 is Figure 7 E-E.
7 and 8, a linear motor primary side 8" is disposed intermittently on the conveyor track 6 side, and a linear motor secondary side 7" is provided on this track. The transport vehicle 1# is configured to travel.

The linear motor primary side 8" installed on the ground side and the transport vehicle r
The gap between the linear motor secondary side 7" provided in
It is held by the running wheels 2# of the transport vehicle 1'' and the track on the ground side.

In this way, in the general linear motor transport device, the transport vehicle 1'' moves on the transport vehicle track 6 disposed on the ground side.

Although the ground side is connected to the linear motor primary side 8'' and the conveyance vehicle 1' side is connected to the linear motor secondary side 7'', the opposite case may be used.

[Problem that the invention seeks to solve]

When operating with this device, thrust is generated on the primary and secondary sides of the linear motor, and at the same time, a large suction force acts on P3, so the gap between the linear motor primary side 8" and the linear motor secondary side 7" is It must be held firmly and accurately.

If the accuracy of these gears and gears decreases, the thrust will fluctuate and the transport vehicle 1'' will not be able to operate normally.

In order to hold the wheels accurately, improvements have been made to the structure, materials, etc., but the running wheels 2# wear out during driving, reducing the accuracy of the gears and wheels. If the gap becomes narrow, dirt and other debris may become trapped, making it impossible to drive. For this reason, the traveling wheels 2'' had to be replaced with new ones before the wear limit of the wheels reached.There are methods of supporting the gap without contact, such as magnetic levitation and air levitation. The disadvantage is that the structure is complicated and the cost is high.

The present invention was devised in view of the above-mentioned points, and its purpose is to provide a linear motor that eliminates the need to replace wheels with new ones before the wear limit and that can be maintained for a long time without changing gears and wheels. A conveyance device is provided.

[Means for solving problems]

That is, the means for achieving this purpose is to provide a linear motor truck for a conveyance vehicle moving on a conveyance vehicle track via a universal joint that can move up and down and left and right relative to each other. In addition, the linear motor bogie is provided with a guide wheel, and this guide wheel is engaged with a guide rail dedicated to the linear motor bogie that is installed intermittently. The secondary side is disposed intermittently, and is energized to provide thrust only when the secondary side or the primary side connected to the transport vehicle side passes.

On the other hand, the conveyance vehicle coasts in a portion on the ground side where the primary side or secondary side of the linear motor is not installed. Therefore, this carrier is operated by repeating coasting-acceleration (or deceleration)-coasting. At this time, in the coasting section, the guide wheels do not contact the guide rails and are suspended in the air, so that no wear occurs on the wheels. Therefore, the guide wheel has a correspondingly longer life span and less variation in gap spacing.

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the linear motor conveying device of the present invention will be described in detail below with reference to the drawings.

〔Example〕

Figures 1 to 3 show one embodiment of the present invention;
The figure is a front view thereof, FIG. 2 is a cross-sectional view taken along the line A--A in FIG. 1, and FIG. 3 is a cross-sectional view taken along the line B--B in FIG.

In FIGS. 1 to 3, a transport vehicle 1. A linear motor secondary truck 4, 4' is suspended at the lower part of f with a universal joint 3, 3' that can move vertically and horizontally, and a guide wheel 5.5 is mounted on this linear motor secondary truck 4, 4'. ' is provided. Also, this guide wheel 5.
5' engages with guide rails 9 which are disposed intermittently. The linear motor primary side 8 is provided on the guide rail 9 side, and the linear motor secondary side 7 is provided on the linear motor secondary truck 4° 4' side.

That is, the conveyance vehicle 1 is in a position where the linear motor primary side 8 and the linear motor secondary side 7 overlap, and a thrust is generated on the linear motor secondary side 7. Furthermore, the gap between the linear motor primary side 8 and the linear motor secondary side 7 is between the guide rail 9 of the linear motor primary side 8 and the guide wheel 5.
It is maintained by

Thus, in the device configured in this manner, when the guided vehicle 1 enters a running state due to the generation of thrust on the secondary side and leaves the linear motor primary side 8, the guided vehicle 1' coasts and moves toward the guide rail. 9 reaches the unlaid part. -The part where the next side and the secondary side overlap, that is, the part where thrust is generated, is generally about (1/10) of the total travel distance.
(115). Therefore, the amount of wear on the guide wheels 5, 5' is approximately (115) to (1/1) compared to when traveling on the entire travel path.
0).

The running wheels 2.2' are constantly in contact with the transport vehicle track 6, resulting in increased wear, but the linear motor secondary truck 4.4' is in constant contact with the transport vehicle track 6. r and are connected by universal joints 3 and 3' that can move up and down relative to each other, so the amount of wear on the running wheels 2.2' does not affect the gap between the linear motor primary side 8 and the linear motor secondary side 7. .

Next, FIGS. 4 to 6 show another embodiment P7 of the present invention, FIG. 4 is a front view thereof, and FIG. 5 is an O--
FIG. 6 is a sectional view taken along the line D-D in FIG.
, 14' are provided on the upper part of the transport vehicle 11, 11'.

That is, the linear motor secondary carts 14 and 14' have upper and lower guide wheels 15°1 that engage with the guide rails 19.
5', a linear motor primary side 18 is provided on the guide rail 19 side, and a linear motor secondary bogie 1 is provided.
4 and 14' are provided with linear motor secondary sides 17 and 17', and these integrated structures are supported by guide rails 19, which are fixed with support fittings 20.

The device configured as described above is constructed by connecting the gears and the guide rail 19 and the guide wheel 1 in the same manner as explained in FIG.
5, 15'. Therefore, the operation is also carried out in the same way, and the running wheels 12, 12'
It has nothing to do with the amount of wear.

Although the above-ground secondary system has been described, the above-ground secondary system has a linear motor truck installed on the ground side and a linear motor secondary fixed to the truck side, and its function is the same as the above-ground secondary system.

〔Effect of the invention〕

As explained above, according to the present invention, the gap between the linear motor primary side and the linear motor secondary side is maintained by the guide rail 9.19 of the linear motor provided on the ground side and the guide wheel 5.5' of the linear motor truck. , 15°15' are guided. Additionally, these wheels are in contact with each other only where the linear motor is generating thrust.
Since other parts are non-contact, there is less wear and the service life is greatly extended.

Also, traveling wheels 2, 2', 12, 12' for transport vehicles
Since this has nothing to do with the gap accuracy between the linear motor's primary and secondary sides, it can be used up to the wear limit of the wheels, greatly extending its life.

[Brief explanation of the drawing]

1 to 3 show an embodiment of the linear motor conveying device of the present invention, FIG. 1 is a front view thereof, FIG. 2 is a cross section taken along the line A-A in FIG. The figure shows a cross section taken along the line B-B in FIG. 1, and FIGS. 4 to 6 show other embodiments of the present invention. FIG. 4 is a front view thereof, and FIG. O-
0 arrow view cross section. FIG. 6 is a cross section taken along the line DD in FIG. 4, FIGS. 7 and 8 are examples of conventional products, and FIG. 7 is a front view thereof. FIG. 8 is a cross section taken along the line E--E in FIG. 7. 1, 1', 1", 11, 11'...
Transport vehicle, 2, 2', 2". 12, 12'... Traveling wheel, 3, 3',
13, 13'... Universal joint, 4, 4',
14.14'...Linear motor secondary trolley, 5
, 5', 15, 15'...-Guide wheel, 6
．． Engineering 6...Tracks for transport vehicles, 7, 7', 7
", 17, 17'... Linear motor secondary side, 8, 8', 8", 18, 18'...
... Linear motor primary side, 9, 19 ... Guide rail, 20 ... Supporting metal fittings.

Claims (1)

[Claims] In a linear motor transport device in which the primary or secondary side of the linear motor is disposed intermittently on the ground, and the secondary or primary side of the linear motor is disposed on the transport vehicle side, a transport vehicle that moves on a transport vehicle track. and a linear motor truck with guide wheels is connected via a universal joint that can mutually move vertically and horizontally, and a guide rail is laid on the primary side or secondary side of the linear motor disposed intermittently on the ground, A linear motor conveying device characterized in that the guide wheel is engaged with the guide rail.