JP2005185043A - Transport bogie device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a transport bogie device which is easy to change the layout of traveling rails and is adaptive to the weight change of a transport article and steep slope traveling. <P>SOLUTION: The transport bogie device includes the traveling rails 12 laid along a prescribed traveling passage; a transport bogie 14 that moves along the traveling rails; and at least one traction bogie 20 that hauls the transport bogie along the traveling rails. The traction bogie and the transport bogie have coupling arms 17 that can couple the bogies to other bogies located fore and aft at a prescribed coupling pitch. The traction bogie has a linear motor primary coil that generates a magnetic field by receiving power feed, and the traveling rails comprise a linear motor secondary conductor having the N-pole and the S-pole of a permanent magnet arranged at a prescribed magnetic pole pitch. The coupling pitch is an integral multiple of the magnetic pole pitch. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a transport carriage device that travels along a traveling rail laid on a ceiling or a floor and transports articles, and more specifically, a secondary conductor provided on the traveling rail side and a connection to the transport carriage. The present invention relates to a linear motor drive type conveyance carriage device that generates thrust by a primary coil provided in a tow carriage that is driven to drive the conveyance carriage.

  Conventionally, as a means of transporting articles in an environment that does not like the generation of dust and oil vapor, such as in food and semiconductor manufacturing factories, it is driven by a linear motor according to a traveling rail laid on the ceiling or floor along the desired transport path In addition, a transport carriage device for running the carriage has been put into practical use.

In such a linear motor-driven transport cart apparatus, a primary coil is installed on the ground-side traveling rail, and an alternating current is supplied to the primary motor, whereby a thrust is applied to the secondary conductor provided on the cart side. The ground primary method (for example, refer to Patent Document 1) for generating a trolley and a primary coil of a linear motor on the trolley side and supplying an alternating current to the ground side traveling rail There is a cart primary system in which a cart is driven by generating a thrust with a secondary conductor provided (see, for example, Patent Document 2).
JP-A-11-99940 Japanese Patent Publication No. 6-30522

  In the case of ground primary type linear motor drive, since no power supply means to the carriage such as a brush is required, the generation of dust and oil vapor can be minimized, but the primary coil is installed along the traveling rail. Since it has to be installed, it is difficult to change the layout of the traveling rail, and the laying cost of the traveling rail has increased. On the other hand, in the case of the primary system of the carriage, the layout of the traveling rail can be easily changed and the cost of the entire apparatus is low, but the size of the primary coil that can be mounted on the carriage is limited by the size of the carriage. There was a concern that thrust would be insufficient when transporting objects or traveling on steep slopes. If the primary coil is lengthened in order to increase the thrust, the gap between the primary coil and the secondary conductor becomes large at the bent portion of the traveling rail, and smooth running at the bent portion is difficult.

  In recent years, with the diversification of consumer needs and shortening of the product life cycle, there is a demand for the development of a transport cart apparatus that can flexibly cope with a wide variety of transported objects and frequent layout changes.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a transport carriage apparatus that can easily change the layout of a traveling rail and can cope with a change in the weight of a transported article or traveling at a steep slope.

  In order to achieve the above object, a transport carriage apparatus according to the present invention includes a travel rail laid along a predetermined travel path, a transport carriage that moves along the travel rail, and a transport carriage that is connected to the transport carriage. Having at least one tow truck that pulls the transport carriage along the rail, the towing carriage and the transport carriage have a connecting arm that can be connected to the front and rear carriages at a predetermined connection pitch; The towing carriage has a linear motor primary coil that generates a magnetic field when supplied with power, and the traveling rail has a linear motor secondary conductor in which N poles and S poles of permanent magnets are arranged at a predetermined magnetic pole pitch. The connection pitch is an integral multiple of the magnetic pole pitch.

  According to the transport cart apparatus of the present invention, the travel rail laid along the predetermined travel path, the transport cart moving along the travel rail, and the transport cart connected to the transport cart are transported along the travel rail. It has at least one towing cart that pulls the cart, and the towing cart and the transport cart have connecting arms that can be connected to each other at a predetermined connecting pitch with the front and rear carts. Receiving a linear motor primary coil that generates a magnetic field, the traveling rail has a linear motor secondary conductor in which the N pole and S pole of the permanent magnet are arranged at a predetermined magnetic pole pitch, and the connection pitch is Since it is configured to be an integral multiple of the magnetic pole pitch, it becomes possible to increase the propulsive force of the transport carriage simply by changing the number of connected tow trucks. In addition, even when the number of towing carts is increased, the gap between each primary coil and secondary conductor is kept constant, so that the bending radius of the bent portion of the traveling rail can be reduced.

  Hereinafter, embodiments of the present invention will be described with reference to FIGS. 1 and 2. FIG. 1 is an explanatory diagram for explaining a transport cart apparatus according to the present invention, and FIG. 2 is an explanatory diagram showing an enlarged view of one traction cart of the transport cart apparatus of the present invention.

  As shown in FIG. 1, the transport cart apparatus 10 in this embodiment includes a travel rail 12 laid along a predetermined travel path, a transport cart 14 that moves along the travel rail 12, and a transport cart. 14 and has at least one tow truck 20 that pulls the transport carriage 14 along the traveling rail 12.

  As shown in FIG. 2, a linear motor primary coil 22 that receives electric power and generates a magnetic field is attached to the traction cart 20. The power supply to the linear motor primary coil 22 can be performed from the traveling rail 12 via a brush provided on the traction carriage 16, or a rechargeable battery is mounted on the transport carriage 14, and a connecting arm described later is used. It is also possible to supply power by electrically connecting the linear motor primary coil 22 of each traction cart 20 and the rechargeable battery mounted on the transport cart 14.

  A traveling roller 24 is pivoted on the tow truck 20 by a distance corresponding to the thickness of the traveling rail 12. The traveling roller 24 supports the tow truck 20 so as to travel along the traveling rail 12. ing. On the other hand, a back plate 15 is fixed to the traveling rail 12, and an N pole and an S pole of a permanent magnet 16 are arranged on the traveling rail 12 at a predetermined magnetic pole pitch. The back plate 15 and the permanent magnet 16 constitute a linear motor secondary conductor 18.

  Furthermore, each tow truck 20 has a connecting arm 17 that can be connected to other tow trucks or transport carts positioned at the front and rear at a predetermined connecting pitch, and by connecting the connecting arms 17 to the front and rear, The carts that are located are linked together.

  The connecting pitches P between the carriages by the connecting arm 17 are all adjusted to be equal, and this connecting pitch is the distance between the N pole and the S pole of the permanent magnet disposed on the traveling rail 12. It is an integral multiple of the magnetic pole pitch. In the case of the present embodiment, the traction carts are connected so as to have an interval of four times the magnetic pole pitch. By doing so, since the propulsive force generated by each tow cart is synchronized, it becomes possible to generate the propulsive force to the maximum when a plurality of tow carts are connected.

  The connecting arm 17 is pivotally supported by the connecting shaft 15 at a position that fits between the gap G between the linear motor primary coil 22 and the linear motor secondary conductor 18. As a result, even in a portion where the traveling rail 12 is bent, a change in the connection pitch P between the traction carts 20 can be suppressed to a minimum, and a reduction in propulsive force can be suppressed to a minimum.

  The number of tow trucks 20 to be connected can be arbitrarily selected according to the weight of the transported object loaded on the transport carriage 14.

  According to the transporting carriage apparatus of the present invention, the layout of the traveling rail can be easily changed, and it is possible to cope with a change in the weight of the transported article and a steeply traveling, and its industrial applicability is extremely high.

It is explanatory drawing of the conveyance trolley apparatus by this invention. It is explanatory drawing which expanded and showed the pulling trolley | bogie of the conveyance trolley | bogie apparatus of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Conveyance cart apparatus 12 ... Traveling rail 14 ... Conveyance cart 15 ... Back plate 16 ... Permanent magnet 17 ... Connection arm 18 ... Linear motor secondary conductor 20 ...・ Towing cart 22 ... Linear motor primary coil 24 ... Traveling roller

Claims (1)

A traveling rail laid along a predetermined traveling path; a transporting carriage that moves along the traveling rail; and at least one that is connected to the transporting carriage and pulls the transporting carriage along the traveling rail. In a transport cart apparatus having two tow carts,
The tow carriage and the transport carriage have a connecting arm that can be connected to each other at a predetermined connecting pitch with the front and rear carriages;
The tow carriage has a linear motor primary conductor that receives power and generates a magnetic field;
The traveling rail has a linear motor secondary conductor in which N poles and S poles of permanent magnets are arranged at a predetermined magnetic pole pitch,
The transport cart apparatus, wherein the connection pitch is an integral multiple of the magnetic pole pitch.

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