KR970005099Y1 - Coil and yoke fixing type electronic clutch - Google Patents

Abstract

No content

Description

Air cap fluctuation detection device of linear motor

1 to 3 show the configuration of a conventional air gap detection device.

1 is a partial configuration diagram of a conventional air gap variation detection device.

2 is a cross-sectional view showing a state in which a gap sensor is installed during the first single contact.

3 is a cross-sectional view showing a state in which a gap sensor is installed at the first and second division contact points.

4 to 8 are views of the air gap variation detection device of the linear motor of the present invention.

4 is a partial configuration diagram of a linear motor according to the present invention.

5 is a partial perspective view of FIG.

6 is a top and bottom cross-sectional view of the linear motor.

7 and 8 are side views showing the upper and lower parts of the motor in FIG.

Figure 9 (a), (b) is a perspective view showing a modification of the air gap adjusting roller according to the present invention.

* Explanation of symbols for main parts of the drawings

1: mover 2: stator

5: air gap adjusting means 5a: roller

5b: Roller shaft 5c: Copper bush

5d: Enclosed 5f: Guide Plate

5g: annular piece 6, 7: wire

The present invention relates to an air gap fluctuation detecting device of a linear motor of the present invention, and is particularly suitable for detecting gap fluctuations caused by wear of an air gap adjusting roller, and the installation workability of a gap fluctuation detection sensor and an air gap fluctuation detection device of a linear motor. It is about.

Conventionally, the hoisting method by the Tal machine (TR M / C) is spread and spread in the elevator, but this method is installed because the machine room is installed on the elevator, and by the hoisting machine to connect the rope hanging on the car (car) and counterweight The installation area of the building due to the machine room becomes a problem because the space corresponding to it must be secured by the installation of a brake system such as a brake and a control panel for braking, and due to the consideration of the rigidity of the machine room due to the heavy weight Production costs also increase.

Therefore, an elevator using a linear motor as a driving source has been developed as a solution to the above problems, and since the linear boat is driven directly by the motor itself, it does not require a pulley of a hoisting machine or another reducer, and thus is simply lightweight as a whole. In addition, there is an advantage that the elevator system can be miniaturized as the machine room becomes unnecessary.

Figure 1 shows a partial configuration of a conventional linear motor, as shown here is composed of a mover (1) and a stator (2), the air gap adjustment roller (5) is coupled to the top of the mover (1) In addition, a casing frame 4 is installed thereon, and a gap sensor 3 is coupled to the casing frame 4.

FIG. 2 is a view showing a gap sensor installation state at the first single contact point, and FIG. 3 is a view showing a gap sensor installation state at the first and second division contact points, and FIG. ) Is fixed to the inner surface of the hollow casing (3a) by one end of the conductor piece (3b) by the screw (3c), the other end of the conductor piece (3d) is bent and bent, coupled to the middle portion of the hollow casing (3a) The allowable air gaps 1 and 1 'with the stator 2 are opened by the adjusting screw 3d. The attached screw 3c and the stator 2 are connected to the DC power supply via the conductors 6 and 7, respectively.

In the conventional linear motor as described above, the air gap adjusting roller 5, which is installed to maintain a predetermined air gap between the mover 1 and the stator 2, may cause fluctuations in the air gap amount due to wear. In consideration of the case, the gap sensor 3 is provided in the casing frame 4 provided above and below the linear motor, and the conductor piece 3b of the gap sensor 3 is connected to + of the DC power supply and the stator 2 When the lower end of) is connected to-, the conductor piece 3b provided at the upper and lower portions of the linear motor, respectively, when a fluctuation of more than the allowable air gap (l) and (l ') occurs between the mover (1) and the stator (2). The warning lamp sounds in contact with the surface of the stator 2, and the operation of the elevator is stopped.

In the conventional linear motor elevator as described above, the manufacturing cost is increased as a separate device such as the gap sensor 3 is required for detecting the air gap variation, and the conductor pieces 3b respectively installed above and below the linear motor are A total of 8 to 10 pieces (16 to 20 in the case of detecting the first and second divisions to be stopped after warning) need to adjust the conductor pieces 3b equally on the circumference of the stator 2 as needed. 3d) has a problem that the installation of the adjustment is very cumbersome and difficult, and requires a separate installation space in the length direction of the count weight in order to install a separate device such as the gap sensor (3).

The present invention eliminates the installation of a separate detection device for the detection of air gap fluctuations, which is a problem of the prior art as described above, and reduces the manufacturing cost and solves the difficulty of installing the conductor piece. An object is to provide a fluctuation detection device.

In order to achieve the above object, the present invention is a plurality of rollers are fixed to the guide plate fixed to the upper end of the mover and in contact with the outer circumferential surface of the stator, the shaft of the roller, the wire connected to one side of the stator, the air gap Provided is an air gap fluctuation detecting device for a linear motor, wherein the outer circumferential surface is positioned in the inner side by a predetermined clearance gap (l) and (l '), and the inner end portion is formed of a conductive element connected to the roller shaft.

Hereinafter, described in detail by the accompanying drawings of the present invention as follows.

4 is a partial configuration diagram of the linear motor according to the present invention, FIG. 5 is a partial perspective view of FIG. 4, FIG. 6 is a top and bottom cross-sectional views of the linear motor, respectively, and FIGS. 7 and 8 are FIG. As a side view showing the upper and lower parts of the motor at, as shown in the present invention, the linear motor according to the present invention, the stator (2) and between the stator (2) and the stator (2) and the stator (2) It consists of an air gap adjusting means (5) to maintain a constant air gap, the air gap adjusting means (5) is condensed to the guide plate (5f) fixed to the upper end of the mover (1) A plurality of air gap adjusting rollers 5a in contact with the outer circumferential surface of the stator 2, a copper bush 5c fixed to an intermediate portion of the roller shaft 5b, and an intermediate portion of the air gap adjusting rollers 5a. The inner end contacts the copper bush 5c in a radially formed hole, and the outer end frees. A plurality of copper rods 5d coupled to each other so as to be inserted at intervals l and l ', and wires 6 and 7 connected to an end of the roller shaft 5b and one side of the stator 2; )

More specifically, in FIG. 5, the air gap adjusting means 5 has the copper bush 5c embedded in the inner diameter of the air gap adjusting roller 5a, which is a synthetic resin, and the circle of the air gap adjusting roller 5a. Holes are formed at two to four equal parts of the main surface, and the copper rods 5d are inserted into the air gap adjusting rollers 5a, respectively, and the inner ends of the copper rods 5d are in contact with the copper bushes 5c. The air gap adjusting roller shaft 5b having the bushing 5c inserted into the inner diameter is rotatably coupled to the guide plate 5f, and one end of the roller shaft 5b is connected to the + side of the DC power supply. The electric wire 6 is fastened by the nut 5e, and the electric wire 7 connected to the negative side is connected to one side of the stator 2. Referring to FIGS. 6 and 7, the copper rod 5d has a clearance gap () in a pair of air gap adjustment rollers 5a corresponding to each other, and a clearance in another pair of air gap adjustment rollers 5a. The gap 1 'is inserted so as to be maintained.

Then, referring to FIG. 8, the air gap adjusting roller 5a in which the clearance gap l, which is the allowable air gap amount, is maintained is arranged so as to be staggered in the upper and lower portions, and the wires 6 bundled in the respective groups are DC power supplies. It is connected to the + side of.

9A and 9B illustrate another embodiment of the conductive element, and as shown therein, a copper ring annular piece 5g is coupled to an intermediate portion of the air gap adjusting roller shaft 5b to form a conductive element. It is supposed to play a role.

According to the present invention as described above, as the air gap adjusting roller 5a of the air gap adjusting means 5 is worn by rolling friction with the stator 2 as the stator 2 moves, the wear progresses. If there is a change in the amount of allowable air gap that must be maintained between the stator (2) and the mover (1), the change of the air gap is detected and an alarm sounds in the elevator when the change in the air gap is greater than the change in the air gap. At the same time, the operation can be stopped.

That is, in FIG. 5 to FIG. 7, when the air gap is changed due to the wear of the air gap adjusting roller 5a, the copper bar 5d exposed by the wear of the air gap adjusting roller 5a is exposed to the copper bush 5c. It is in contact with the wire, according to the electric current to the wires (6), (7) and when the fluctuation of the clearance interval l is generated a warning sound, and when the fluctuation by the clearance interval l 'can be operated to control the emergency stop.

At this time, the stator 2 and the air gap are staggered by staggering the arrangement according to the allowable air gap amount of the air gap adjusting rollers 5a (for example, four top and bottom four) provided above and below the linear motor, as shown in FIG. By varying the amount of air gap generated between the adjusting rollers 5a at each part of the circumference, it is possible to accommodate the change in the amount of air gap due to one-sided wear and to increase safety.

As described above, the present invention is provided with an air gap sensor as an air gap adjusting means, so that a separate detection device is provided by directly detecting a change in the allowable air gap amount according to the wear amount of the air gap adjusting roller, which is a substantial change in the air gap amount. This eliminates the problem of eliminating the need for and eliminating the difficulty of adjusting the allowable air gap amount in the pre-installation stage.

Claims (4)

Air gap adjustment of the plurality of air gap adjustment rollers 5a and the air gap adjustment rollers 5a which are in contact with the outer circumferential surface of the stator 2 by being fixed to the guide plate 5f fixed to the upper end of the mover 1. The outer circumferential surface is located inside the roller shaft 5b, the wires 6 and 7 connected to one side of the stator 2, and the outer circumferential surface of the air gap adjusting roller 5a by a predetermined clearance interval, and the inner end thereof is Air gap fluctuation detection device of a linear motor, characterized in that consisting of a conductive element connected to the roller shaft (5b). 2. The inner end portion of claim 1, wherein the conductive element is formed in a radially formed hole in a middle portion of the copper bush 5c and the air gap adjusting roller 5a fixed to an intermediate portion of the air gap adjusting roller shaft 5b. And a plurality of copper rods (5d) which are in contact with the copper bush (5c) and coupled so that the outer end portion is inserted by a clearance interval. 2. An air gap variation detecting apparatus for a linear motor according to claim 1, wherein the conductive element is an annular piece (5g) fixed to an intermediate portion of the air gap adjusting roller shaft (5b). 2. A pair of air gap adjusting rollers (5a) arranged in the upper and lower portions of the mover (1) so that the clearance is maintained by l, and the clearance is as much as l, (l), (l '). An air gap variation detecting device for a linear motor, characterized in that a pair of other air gap adjusting rollers (5a) arranged to be maintained are arranged so as to be staggered from each other in the upper and lower portions.