JPH10127036A - Linear motor connecting method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To attain such a structure as a connection is not brought into contact with a secondary conductor by sandwiching a linear motor secondary conductor between two linear motor primary cores, and fixing a connection between the linear motor primary cores along the inside of a motor frame. SOLUTION: Two linear motor primary cores 1a, 1b are fixed so as to face each other onto the inside of a motor frame 5 whose horizontal cross-section is of U shape. By guiding a counter weight frame 20 fore and aft, and to the right and left by a guide rail, a linear motor secondary conductor 10 is sandwiched between the linear motor primary cores 1a, 1b, and a tail cord 2 is connected with a coil termination below the linear motor primary core 1a. Coil terminations at the lower part of the linear motor primary core 1b are connected integrally to form a neutral point 4, and these connections 3 are fixed along the inside of the motor frame 5. It is thus possible for counter weight to travel safely.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rope type linear motor elevator and a method for connecting the same.

[0002]

2. Description of the Related Art In the prior art, Japanese Unexamined Patent Publication No. Hei 6-188440 discloses a wiring method for providing a plurality of primary sides of a two-sided linear motor in accordance with the capacity.

[0003]

In the above-mentioned conventional double-sided linear motor, the two primary cores are arranged so as to sandwich both sides of the secondary conductor. In order to connect the coils of the two primary cores in series, a connection must be passed from one primary core to the other primary core. Therefore, there is a problem that a structure in which the connection does not come into contact with the secondary conductor must be taken.

[0004]

According to the present invention, two linear motor primary cores are fixed to face the inner surface of a motor frame having a horizontal U-shaped cross section, and a linear motor secondary conductor is interposed therebetween. The above problem is solved by sandwiching and fixing the connection between the two linear motor primary cores along the inside of the motor frame.

[0005]

FIG. 1 is a perspective view of a counter weight of a linear motor elevator equipped with a linear motor according to an embodiment of the present invention.

A linear motor secondary conductor 10 having an L-shaped horizontal cross section is fixed to a hoistway (not shown). The linear motor primary cores 1a and 1b are fixed so as to face the inner surface of the motor frame 5 having a U-shaped horizontal cross section, and the motor frame 5 is mounted on the counterweight frame 20 with a laminated rubber 15. Although not shown, the counter weight frame 20
Is guided by the guide rails back and forth and left and right, and sandwiches the linear motor secondary conductor 10 between the linear motor primary cores 1a and 1b.

[0007] Since the coils of the same phase among the coils provided in the linear motor primary core are connected in series, coil terminations corresponding to the number of phases can be formed above and below the linear motor primary core.

[0008] A tail cord 2 is connected to the coil end below the linear motor primary core 1a. On the other hand, the coil ends below the linear motor primary core 1b are collectively connected and set to the neutral point 4. The coil termination above the linear motor primary core 1a and the coil termination above the linear motor primary core 1b are connected.

When the coils of the primary core are connected in parallel between the primary cores on both sides, a tail cord 2 is connected to the coil end below the linear motor primary core 1a. The coil ends above the two linear motor primary cores 1a, 1b are individually connected to each other and set as a neutral point. The lower coil starting end of the linear motor primary core 1a and the lower coil starting end of the linear motor primary core 1b are connected.

The relationship between the motor frame 5 and the connection between the coil terminal above the linear motor primary core 1a and the coil terminal above the linear motor primary core 1b when both sides are connected in series will be described with reference to FIG.

FIG. 2 is a sectional view of a counter weight on which the linear motor according to the embodiment of the present invention is mounted. The cross sections of the counterweight frame 20 and the secondary conductor 10 are shown by hatched portions, and the linear motor primary cores 1a and 1b and the motor frame 5 are shown as viewed from above.

Each of the coil ends on the left side of the linear motor primary core 1a and the linear motor primary core 1b has a coil end, and a connection 3 for connecting them is provided. The connection 3 is in contact with the inner surface of the motor frame 5 in this embodiment. The thickness d of the connection 3 is smaller than the distance S1 between the side surface of the secondary conductor 10 and the inner surface of the motor frame 5, thereby creating a gap of the distance S2. Therefore, if the distance S2 is provided in consideration of the variation in the installation accuracy of the secondary conductor 10, the tolerance of the secondary conductor 10 itself, and the traveling accuracy of the counterweight frame 20, the connection between the secondary conductor 10 and the connection 3 is made. The counterweight can run safely without contact.

When both sides are connected in parallel, the connection between the coil start below the linear core 1a of the linear motor and the coil start below the primary core 1b of the linear motor and the motor frame 5 are also the same as in FIG. It is. That is, the coil ends above the two linear motor primary cores 1a and 1b are individually connected to each other and set as a neutral point. A coil starting point below the linear motor primary core 1a;
Connect the beginning of the coil below b.

According to the present invention, the two linear motor primary cores are fixed so as to face the inner surface of the motor frame 5 having a U-shaped horizontal cross section, and sandwich the linear motor secondary conductor 10 therebetween. The connection 3 between the linear motor primary cores is connected at the upper part of the primary core and is fixed along the inside of the motor frame 5, so that the connection 3 does not contact the secondary conductor 10.

FIG. 3 is a sectional view of a counter weight equipped with a linear motor according to another embodiment of the present invention. What is different from FIG. 2 is the position of the connection 3. In this embodiment, the connection 3 is disposed above the motor frame 5 so as not to approach the secondary conductor side from the inner surface of the motor frame 5. Therefore, according to the present embodiment, the secondary conductor 10 can be used without considering the thickness of the connection 3.
2, the width of the counter weight can be made smaller than in the embodiment of FIG.
The counterweight can run safely without the 0 and the connection 3 coming into contact.

In FIG. 3, the connection 3 is located at the upper part of the motor frame, but the same effect can be obtained at the lower part.

FIG. 4 is an external view of a linear motor elevator using the linear motor according to the embodiment of the present invention.

The linear motor secondary conductor 10 is fixed to a hoistway, and a counter weight 20 carrying the linear motor primary side of the present invention is connected to a car 21 via a rope 22. By energizing the linear motor primary, a thrust of the linear motor is generated, whereby the counterweight 20 moves, and the car 21 can move up and down, thereby operating as an elevator.

Since the linear motor primary of the present invention is mounted, the counterweight can run safely without the connection 3 between the primary sides on both sides coming into contact with the secondary conductor 10, so that the car can be safely driven. I can run.

In this embodiment, the linear motor primary core 1a
The tail cord 2 is installed at the lower part of the linear motor, but if it is a power feeding method using an elevator rope, the connection 3 is placed from the upper part to the lower part of the linear motor primary core 1a and the lower part of the linear motor primary core 1b. From above to above, the neutral point 4 may be placed above the linear motor primary core 1b.

[0021]

According to the present invention, the two linear motor primary cores are fixed so as to face the inner surface of the motor frame having a horizontal U-shaped cross section, and sandwich the linear motor secondary conductor between the two cores. The connection between the linear motor primary cores is connected at the upper part of the primary core and is fixed along the inside of the motor frame, so that the connection does not contact the secondary conductor.

[Brief description of the drawings]

FIG. 1 is a perspective view of a counter weight of a linear motor elevator equipped with a linear motor according to an embodiment of the present invention.

FIG. 2 is a sectional view of a counter weight on which the linear motor according to the embodiment of the present invention is mounted.

FIG. 3 is a sectional view of a counter weight equipped with a linear motor according to another embodiment of the present invention.

FIG. 4 is a perspective view of a linear motor elevator using the linear motor according to the embodiment of the present invention.

[Explanation of symbols]

1a, 1b: linear motor primary core, 2: tail cord, 3: power supply connection, 4: neutral point, 5: motor frame, 10 ...
Linear motor secondary conductor, 15: laminated rubber, 20: counterweight frame.

 ──────────────────────────────────────────────────の Continued on the front page (72) Inventor Hiroshi Miyoshi 1070 Ma, Hitachinaka City, Ibaraki Prefecture Inside the Mito Plant of Hitachi, Ltd. Inside the Mito Plant (72) Inventor Ryoichi Naganuma 7-1-1, Omika-cho, Hitachi City, Ibaraki Prefecture, Hitachi Research Laboratory, Hitachi, Ltd.

Claims (8)

[Claims] 1. A two-sided linear induction motor for a linear motor elevator powered by a tail cord, wherein a tail cord is connected to one primary core, and windings on both sides are connected to the primary core and the other primary core. A connecting wire is provided, a neutral point of the winding is provided on the other primary core, the two primary cores are fixed to face each other by a U-shaped frame, and a wire connecting both windings is formed by A method for connecting a linear motor, the method being provided on the back side of a character-shaped frame. 2. A cord is connected to a lower portion of one of the primary cores, a connection is provided at an upper portion of the primary core and an upper portion of the other primary core to connect windings on both sides, and a coil is connected to a lower portion of the other primary core. The method according to claim 1, wherein a neutral point of the line is provided. 3. A cord is connected to an upper portion of one of the primary cores, a connection is provided between a lower portion of the primary core and a lower portion of the other primary core to connect windings on both sides, and a coil is connected to an upper portion of the other primary core. The method according to claim 1, wherein a neutral point of the line is provided. 4. The connection connecting the windings on both sides is fixed outside the inner side of the U-shaped frame.
The connection method of the linear motor described in 1. 5. The distance between the inside of the U-shaped frame and the tip of the secondary conductor is wider than the thickness of the connection.
Or a method for connecting a linear motor according to item 3. 6. The coil of the same phase among the coils provided in the primary cores on both sides is connected in series.
6. The method for connecting a linear motor according to 3, 4, or 5. 7. The method according to claim 1, wherein the coils of the primary core are connected in parallel between the primary cores on both sides. 8. A linear motor elevator equipped with a linear motor using the linear motor connection method according to claim 1, 2, 3, 4, 5, 6, or 7.