JP2518194B2 - Transport equipment using linear motors - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transportation facility for driving a vehicle body for transportation by using a linear motor.
The present invention relates to a transport facility using a linear motor, in which a guide rail for movably supporting a vehicle body for transportation is provided, a primary coil is provided on the guide rail side, and a plate-shaped secondary conductor is provided on the vehicle body side. 2. Description of the Related Art Conventionally, a secondary conductor provided on the vehicle body side has been formed into a single plate. By the way, there are a case where the secondary conductor provided on the vehicle body side is arranged in a horizontal posture to configure a linear motor, and a case where the secondary conductor is arranged in a vertical posture to configure a linear motor. It is advantageous to bend the guide rails in the horizontal direction to form a so-called horizontal curved bending path portion. In the latter case, the rails are bent vertically to form a so-called vertical curve bending path portion. Is advantageous in forming. Further, in providing the primary coil on the guide rail side, there are a type in which they are arranged side by side at an appropriate interval in the longitudinal direction of the guide rail, and a type in which they are continuously provided in the longitudinal direction of the guide rail, and the former type. Then, in order to lengthen the acceleration / deceleration time due to the intermittently positioned primary coil, it is desirable to lengthen the length of the secondary conductor, and even in the case of the latter type, in order to increase the thrust force. It would be desirable to increase the length of the secondary conductor. (No reference is given.) [0003] In such an article transport facility, a rail is bent in a horizontal direction or a vertical direction to form a bent traveling path portion of a horizontal curve or a vertical curve. In order to move the vehicle body for transportation to stations at various places, it is desired to reduce the radius of curvature of the curved traveling path portion to improve the transportation efficiency. However, in the case of forming the secondary conductor in the shape of a single plate, if the length of the secondary conductor is increased, for example, when the secondary conductor is moved in the internal space of the guide rail, It is necessary to avoid the collision between the guide rail and the guide rail, and to keep the entire secondary conductor in an appropriate position with respect to the primary coil when driving with a linear motor even in the curved traveling path part. Therefore, the radius of curvature of the curved traveling route cannot be made sufficiently small. The present invention has been made in view of the above circumstances, and an object thereof is to make it possible to sufficiently reduce the radius of curvature of a bent traveling path portion while sufficiently increasing the length of the secondary conductor. It is in. The article transport facility using a linear motor according to the present invention is provided with a guide rail on which a vehicle body for transport is movably supported, and a primary coil is provided on the guide rail side, and A plate-shaped secondary conductor is provided on the vehicle body side, and a first characteristic configuration is that the secondary conductor is
It is divided into a plurality of conductor portions that are arranged in a state of approaching each other in the front-rear direction of the vehicle body, and these conductor portions are opposed to the vehicle body with their surfaces facing the primary coil being flush with each other .
And freely bendable by turning around the axis along the thickness direction
And is provided so as to be bent and operated by a rolling wheel guided by the guide rail in a posture along the longitudinal direction of the guide rail. A second characteristic configuration is that the opposing end edges of the adjacent conductor portions are formed in an arc shape with the adjacent conductor portions fitted to each other and centered on the bent axis. It is in. According to the first characteristic configuration of the present invention, the plurality of divided conductor portions of the secondary conductor are made linear in the straight traveling path portion by the rolling wheels guided by the guide rails. Line up, and line up in a bent shape along the curved travel route.
Bending operation Formed into a plate by this bending operation
And a plurality of vehicles lined up so as to approach each other in the longitudinal direction of the vehicle body
The individual conductor portions rotate about an axis along the thickness direction.
That is, in cooperation with the primary coil on the guide rail side, efficiently
The secondary conductor has a plate shape to enable generation of propulsion.
In addition, in the bent traveling path portion of the guide rail,
Stable by suppressing the fluctuation of the gap between the secondary conductor and the primary coil
A secondary conductor to allow the generation of propulsion
Position the guide rail in the thickness direction of the secondary conductor.
Bending of the guide rail along the straight surface
It is assumed that the posture is such that
In order to increase the length of the secondary conductor,
It ’s difficult to keep it in the right position
Is avoided by making the bending operation possible as described above.
The conductors along the longitudinal direction of the guide rail.
You can maintain the posture. Further, by providing each of the conductor portions such that their surfaces facing the primary coil are flush with each other, uniform propulsive force can be applied to the entire secondary conductor. According to the second characteristic configuration of the present invention, the opposing edges of the adjacent conductor portions are formed in an arc shape in which the adjacent conductor portions are fitted to each other and the bent axis is the center. By doing so, the conductor portions can be brought into close contact with each other in the straight state and the bent state, and a good propulsive force can be applied to the secondary conductor. According to the first characteristic construction of the present invention, even if the length of the secondary conductor is made sufficiently long and the radius of curvature of the bent traveling path portion is made sufficiently small, the secondary conductor is It is possible to avoid collision between the guide rail and the guide rail, and to drive the secondary conductor in the curved traveling path part with the linear motor by using the entire secondary conductor.Therefore, make the secondary conductor sufficiently long. In addition to being excellent in terms of driving surface, the radius of curvature of the curved traveling path portion can be made sufficiently small to achieve excellent in conveying efficiency. Moreover, by providing each of the conductor portions such that their surfaces facing the primary coil are flush with each other, a uniform propulsive force can be given to the entire secondary conductor, and therefore, in terms of transport efficiency, We came to be able to make good things. According to the second characteristic configuration of the present invention, the conductor portions can be brought into close contact with each other in the straight state and the bent state to give a good propulsion force to the secondary conductor, which is more excellent in terms of transport efficiency. I was able to do it. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 6, a guide rail B for movably supporting a vehicle body A for transportation is provided between stations S for article transfer, and the vehicle body A for transportation will be described later. As described above, the article is conveyed while being driven by the linear motor. However, 1 in the figure is a support for the guide rail B. As shown in FIGS. 2 and 5, the guide rail B is formed to have a substantially U-shaped cross section, and each of the two lateral side walls 2 is provided with a plate-like portion 2a for mounting the vehicle body. And on the bottom wall 3, the primary coil C ₁ ,
C ₂ is attached. That is, in the station S, the station primary coil C ₁ for decelerating and stopping and accelerating the vehicle body A, and the relay primary coil C ₂ for accelerating the vehicle body A in the middle of the stations are It is attached to the guide rail B. The vehicle body A may pass through the station S without stopping, and in that case, the station primary coil C ₁ acts as a relay primary coil. To construct the vehicle body A for transportation, a pair of front and rear columns 4 are provided, a loading platform 5 is attached between the upper ends of both columns 4, and only the rolling wheel support frame 6 is rotated on each of the columns 4. Freely attached, plate-shaped linear motor on the bottom of the vehicle
The secondary conductor D is provided in a horizontal posture. As shown in FIGS. 3 to 5, the wheel support frame 6 is composed of a cylindrical frame 6a rotatably fitted on the support column 4 and a plate-shaped frame 6c fixed to the outer peripheral portion of the cylindrical frame 6a. Then, a pair of left and right first rolling wheels 7 rotatable around the horizontal axis X is attached to the center of the plate-shaped frame 6c in the front-rear direction, and at the front end side and the rear end side of the plate-shaped frame 6c, respectively. A pair of left and right second rolling wheels 8 which are rotatable around the vertical axis Y are attached. By the way, the first wheel 7 is placed on the plate-shaped portion 2a of the guide rail B, and the second wheel 8 comes into contact with the left and right lateral side walls 2 of the guide rail B. Explaining the secondary conductor D, as shown in FIGS. 1 to 5, they approach each other in the longitudinal direction of the vehicle body .
Are divided into three conductor portions D ₁ and D ₂ arranged in parallel. As a three conductor portions D _1, D ₂ are flush, as well as fastening the conductor portion D ₁ of the front and rear end to the front end of the plate-like frame 6c, the longitudinal direction intermediate conductive part D ₂ Is fixed to the both pillars 4 between the cylindrical portions 9a fitted onto the support columns 4, and therefore the three conductor portions D ₁ and D ₂ are connected to the vehicle body A.
And freely bendable by turning around the axis along the thickness direction
And is guided by the guide rail B.
It is configured to be bent and operated by the rolling wheels 8 in a posture along the longitudinal direction of the guide rail B. That is, as the direction of the wheel support frame 6 is changed by the contact action of the second wheel 8 with the guide rail B, the conductor portions D _{1 at the} front and rear ends are changed.
Moves integrally with the wheel support frame 6 and bends with respect to the conductor portion D _{2 in the} front-rear direction. To form each of the conductor portions D ₁ and D ₂ , the aluminum plate a and the steel plate b are laminated to form a so-called composite type. or,
Longitudinal front and rear end edges E ₂ each direction intermediate conductive part D ₂ s, and the trailing edge E ₁ of the conductive portion D ₁ of the front and rear ends, the struts 4
The conductor portions D ₁ and D ₂ are arranged in close contact with each other even in the bent state by forming them in an arc shape centered on the axis of the. In the figure, reference numeral 10 denotes a plate body 10a on the vehicle body side in which slits are formed at appropriate intervals in the longitudinal direction of the vehicle body, and the plate body 10a.
A linear encoder including a photo-interrupter type optical sensor 10b on the guide rail side that detects a, and is provided to detect the position and speed of the vehicle body A at the station S. In addition, 11 is a vehicle body A station S
It is an electromagnet that holds its position at. [Other Embodiments] In the above embodiment, the case where the secondary conductor D is provided in a horizontal posture and each of the conductor portions D ₁ and D ₂ is bent in the horizontal direction is illustrated. The conductor portions D ₁ ,
D ₂ may be bent in the vertical direction. Also, the number of divided secondary conductors D can be variously changed. Further, in the above-described embodiment, the case where the second rolling wheel 8 for supporting the vehicle body A is also used as the rolling wheel for bending operation of the secondary conductor D is illustrated, but a rolling wheel for bending operation is separately provided. Good. It should be noted that reference numerals are given in the claims for convenience of comparison with the drawings, but the present invention is not limited to the configurations of the accompanying drawings by the entry.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic plan view showing a bent state of a secondary conductor. FIG. 2 is a schematic perspective view of a transfer facility with a part thereof seen through. FIG. 3 is a schematic plan view showing a structure of a vehicle body. FIG. 4 is a schematic side view showing the configuration of the vehicle body. FIG. 5 is a schematic vertical sectional front view showing the configuration of the vehicle body. FIG. 6 is a schematic plan view of the transfer equipment. [Description of symbols] 8 Rolling wheel A Vehicle body B Guide rail C _1, C ₂ primary coil D secondary conductor D _1, D ₂ conductor portion E _1, E ₂ edge

Continuation of the front page (51) Int.Cl. ⁶ Identification number Office reference number FI technical display location H02K 41/025 B60L 13/02 A

Claims (1)

(57) [Claims] 1. A guide rail (B) for movably supporting the vehicle body (A) for transportation is provided, and the primary coils (C ₁ ) and (C ₂ ) are provided on the guide rail side and the plate-shaped secondary conductor (D) is provided. ) Are provided on the vehicle body side, respectively, using a linear motor, and the secondary conductors (D) are close to each other in the vehicle longitudinal direction.
A plurality of conductive portions arranged in a state _{(D 1), (D 2} ) in divided form, they conductor portions (D _1), the (D _2), those of the primary coil _{(C 1), (C 2} ) Along the thickness direction with respect to the vehicle body (A) in a state where the surface facing the vehicle is flush
The guide rail (B) is configured to be bendable by rotation around an axis, and is bent by a rolling wheel (8) guided by the guide rail (B) to a posture along the longitudinal direction of the guide rail (B). Transport equipment using a linear motor that has been installed as described above. 2. The opposing conductor portions (D ₁ ), (D ₂ ) are opposed to each other at their opposing edges (E ₁ ), (E ₂ ), and the adjacent conductor portions are fitted to each other, and The transport facility using a linear motor according to claim 1, wherein the transport facility is formed in an arc shape having a center.