JP2000318964A - Adjusting device for electromagnetic brake of passenger conveyor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electromagnetic brake adjusting device for a passenger conveyor to allow anybody to perform adjustment simply and quickly. SOLUTION: The configuration includes an engagement part to engage a transmitting lever 9 to transmit the motion of a movable armature 5 moving with an energizing current flowing in a solenoid whereby engagement is generated between a push bolt 8 and lock nut 12 which adjust the gap A in a plunger type microswitch 11 to sense the motion of the armature 5, and further a first lock fitting 14 in a disc shape having a hexagonal hole and a second lock fitting 15 in disc shape having a hexagonal groove are provided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an electromagnetic brake adjusting device for a passenger conveyor.

[0002]

2. Description of the Related Art A conventional technique will be described with reference to a perspective view of a main part of a passenger conveyor brake device of FIG. 5 and a side view of a main part of FIG. 5 of FIG.

[0005] In FIGS. 5 and 6, a drive shaft 2 and a disk 3 are connected via a V-belt (not shown) from the main motor 1 side.
It comprises a lining 5 that rotates integrally with the main shaft 4, a movable armature 6, a core 8 containing an electromagnetic coil 7 and a braking spring (not shown), and the movable armature 6 and the core 8.
Are supported on the disk 3 by rods (not shown).

Normally, when the passenger conveyor stops, the rotation of the main motor 1 is stopped electrically, and at the same time, the spring force of a braking spring (not shown) contained in the core 8 is moved by the movable armature 6.
, The lining 5 is pressed between the movable armature 6 and the disk 3, and the rotation of the main shaft 4 is stopped and held by the frictional force. At this time, there is a predetermined gap (for example, 0.4 mm) between the core 8 and the movable armature 6. When the passenger conveyor starts, an exciting current is applied to the electromagnetic coil 7 included in the core 8 so that an electromagnetic attraction force that overcomes the spring force of a braking spring (not shown) is sandwiched between the movable armature 6 and the disk 3. The pressed lining 5 is released, and the main shaft 4 is made rotatable. At this time, since the movable armature 6 is sucked by the core 8, the predetermined gap does not exist.

On the other hand, the presence or absence of the operation of the electromagnetic brake is determined by checking the first transmission lever 9 for detecting the moving distance of the movable armature 6 and the end of the push bolt 10 provided on the first transmission lever 9. The vicinity of one end of the second transmission lever 11 is abutted, and the vicinity of the other end of the second lever 11 which is amplified and movable at a predetermined dimensional ratio via a fulcrum 12 provided on the second transmission lever 11. The plunger 13A of the microswitch 13 is disposed with a predetermined gap.
The micro switch 1 by the movement of the plunger 13A
The operation of 3 detects the braking operation. Push bolt 1
0 is fixed with a lock nut 14.

In order to adjust the gap between the second transmission lever 11 and the plunger 13A of the microswitch 13 to a predetermined size, a gap gauge having a predetermined thickness is inserted, and the gap gauge is held with one hand. Lock nut 1 fixing push bolt 10 for adjusting the gap with the other hand
4 is loosened, and the gap is adjusted with the push bolt 10. After the adjustment, tighten the lock nut 14 and push the bolt 1
0 is fixed. Next, the microswitch 13 is inserted into the gap.
Insert a gap gauge having a specified size for the operation of the micro switch 13 and confirm that the micro switch 13 operates normally.

[0007]

The prior art described above has a second problem.
Transmission lever 9 and plunger 1 of microswitch 11
In order to adjust the gap of 1A, the operation of loosening or tightening the push bolt 8 and the lock nut 12 while inserting a gap gauge (not shown) into the gap A is performed with a spanner (not shown). Since the operation of the wrench cannot be performed with one hand, and there is a delicate movement of the push bolt 8 when the lock nut 12 is tightened, and this movement becomes large in the gap side of the plunger 11A of the microswitch 11, There is a problem that it takes time to adjust the gap A and requires skill. In addition, the main motor 1 and the brake device are installed in a machine room (not shown) located below the floor surface, and the working posture of the gap adjustment is in a prone state, with the upper body bent and the head turned downward. In some cases, the feeling was worse when the time was long.

It is an object of the present invention to provide a passenger conveyor electromagnetic brake adjusting device that allows anyone to easily and quickly adjust a passenger conveyor electromagnetic brake.

[0009]

According to the present invention, a movable armature is moved by an exciting current flowing through an electromagnetic coil, and a lining between the movable armature and the disk is pressed to generate a frictional force. A transmission lever that has a disk brake type electromagnetic brake that obtains a braking force in the transmission lever that amplifies the moving distance of the movable armature by a dimensional ratio with respect to a fulcrum provided in the middle, and at one end on the amplification side of the transmission lever, A plunger type micro switch for detecting the movement of the movable armature by contact with a transmission lever is provided, and a push bolt and a lock nut for adjusting a gap between the transmission lever and the plunger type micro switch at the other end of the transmission lever. And an electromagnetic brake adjusting device for a passenger conveyor having an engaging element for engaging the transmission lever. Both are a gap gauge having the same thickness as the dimension of the gap, a disc-shaped first lock fitting having a hexagonal hole for engaging the lock nut, and a disc-shaped first lock fitting having a hexagonal groove for engaging the push bolt. And two lock fittings.

[0010] With this configuration, after the gap gauge, which has engaged the engagement portion with the transmission lever, advances and retreats the push bolt to a position where it comes into contact with the plunger-type microswitch, then the first lock fitting and the second lock fitting are moved. Hold the push bolt and lock nut in the locked state with the lock fittings. As described above, the gap adjustment between the transmission lever and the plunger-type micro switch and the fastening of the push bolt and the lock nut can be performed separately, thereby improving the accuracy of the gap adjustment work and shortening the work time. . Further, since the fastener for the push bolt and the lock nut is formed in a disk shape, one-handed operation is possible, and a delicate fastening operation in a narrow place can be easily performed.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS.

FIG. 1 is a perspective view of a main part of a brake device showing an embodiment of an electromagnetic brake adjusting device for a passenger conveyor according to the present invention, FIG. 2 is a perspective view of a gap gauge according to an embodiment of the present invention, and FIG. FIG. 4 is a perspective view of a first lock fitting according to one embodiment of the present invention, and FIG. 4 is a perspective view of a second lock fitting according to one embodiment of the present invention. Note that the same reference numerals are given to the same portions, and description thereof will be omitted.

In the figure, a micro switch 11 has a contact (not shown) that operates when the plunger 11A moves, for example, by 0.1 mm. The moving distance of the movable armature 5 is set via a fulcrum 10 of a second transmission lever 9. For example, a movement of 0.4 mm, which is a normal movement distance of the movable armature 5, is 1.5 mm at a contact position between the plunger 11 </ b> A of the microswitch 11 and the second transmission lever 9.
In this case, the gap between the plunger 11A and the transmission lever 9 is set to 1 so that the plunger 11A can be moved by 0.1 mm or more at the contact position between the second transmission lever 9 and the plunger 11A. .3 mm, the overtravel of the contact not shown is 0.1
mm is secured. Also, push bolt 8
As described above, it is possible to adjust the gap A by 1.3 mm by moving back and forth.

Here, the gap gauge 13 is formed by welding two stainless steel plates having different thicknesses, one of which is a gap A between the preset plunger 11A and the second transmission lever 9. The gauge plate 13A has a thickness of 3 mm, and the other includes a gauge plate 13B having a thickness of 1.5 mm, which is the size that the second transmission lever 9 moves, and the gauge plate 13B has a parallel surface, It is bent 90 degrees twice in the opposite direction so that the ends are in opposite directions, and the welding of the gauge plates 13A and 13B protrudes from the other end of the gauge plate 13A and one end of the gauge plate 13A. And the other end of the gauge plate 13A and the bent end of the gauge plate 13B are made substantially flush. The gap B between the gauge plate 13A and the bent gauge plate 13B is the second transmission lever 9
Has a thickness of 9B. Further, a hole 13C is opened after welding the gauge plate 13A and the gauge plate 13B, and a string 13D having a length of about 2 m is passed through the hole 13C in a loop shape.

Further, a push bolt 8 for adjusting 1.3 mm, which is the dimension of the gap A between the plunger 11A and the transmission lever 9, is provided.
A fastener for fastening the push bolt 8 and the lock nut 12 for keeping the push bolt 8 in a fastened state is a disk-shaped first lock fitting 14 having a diameter of about 5 cm and a thickness of about 1 cm.
And a disk-shaped second lock fitting 15 having a diameter of about 5 cm and a thickness of about 1.5 cm. The center of the first lock fitting 14 for fastening the lock nut 12 passes through the head of the push bolt 8. A hexagonal hole 14A for engaging the lock nut 12 is provided, and a hexagonal groove 15A for engaging the head of the push bolt 8 is provided at the center of the second lock fitting 15 for fastening the push bolt 8. Is provided. In addition, the circumferential surfaces of the first lock fitting 14 and the second lock fitting 15 are subjected to anti-slip processing for reliable operation.

Next, a method of adjusting the gap A between the plunger 11A and the transmission lever 9 using the gap gauge 13, the first lock fitting 14, and the second lock fitting 15 will be described.

First, a first hexagonal hole 14A is inserted through the push bolt 8 and the first
With the lock fitting 14, the fastening state of the push bolt 8 is released, and the gap gauge 13 is inserted from the side so that the gauge plate 13A of the gap gauge 13 is inserted into the gap A between the plunger 11A and the second transmission lever 9. Transmission lever 9 in the gap
The push bolt 8 is advanced and retracted so that the plunger 11A comes into contact with the gauge plate 13A without moving, and it is confirmed that the not-shown contact of the microswitch 11 does not operate. 1.3 mm which is the gap A of the lever 9 can be set. Here, by holding the string 13D in hand or hanging it on the main motor 1, even if the gap gauge 13 falls, it can be easily picked up.

Next, with the gap gauge 13 attached to the second transmission lever 9, the hexagonal groove 15A of the second lock fitting 15 is engaged with the head of the push bolt 8, and the second
The lock nut 12 engaged with the hexagonal hole 14A is fastened by turning the first lock fitting 14 with a finger while pressing the lock fitting 15 to prevent the push bolt 8 from turning, and the push bolt 8 is fastened. Kept in state.

Next, the gap gauge 13 is removed from the second transmission lever 9, and the second transmission lever 9 and the plunger 11A are removed.
One end of gauge plate 13B (1.5 mm thick) in gap A of
Is inserted, the state is equivalent to the plunger 11A moving by 0.2 mm, and the operation of a contact (not shown) of the microswitch 11 can be confirmed.

According to this embodiment, the second transmission lever 9
The adjustment of the gap A between the plunger and the plunger 11A and the fastening of the push bolt 8 and the lock nut 12 can be performed with one hand, so that work in a narrow place can be performed easily and in a short time.

[0021]

According to the present invention, after the push bolt is advanced and retracted to a position where it comes into contact with the plunger-type micro switch in which the engagement portion is engaged with the transmission lever, the first lock fitting and the second lock fitting are provided. Hold the push bolt and lock nut in the locked state with. As described above, the gap adjustment between the transmission lever and the plunger-type micro switch and the fastening of the push bolt and the lock nut can be performed separately, thereby improving the accuracy of the gap adjustment work and shortening the work time. . Further, since the fastener for the push bolt and the lock nut is formed in a disk shape, one-handed operation is possible, and a delicate fastening operation in a narrow place can be easily performed.

[Brief description of the drawings]

FIG. 1 is a perspective view of a main part of a brake device showing an embodiment of an electromagnetic brake adjusting device for a passenger conveyor of the present invention.

FIG. 2 is a perspective view of a gap gauge according to one embodiment of the present invention.

FIG. 3 is a perspective view of a first lock fitting of one embodiment of the present invention.

FIG. 4 is a perspective view of a second lock fitting of one embodiment of the present invention.

FIG. 5 is a perspective view of a main part of a conventional electromagnetic brake device for a passenger conveyor.

FIG. 6 is a main part side view showing a conventional electromagnetic brake device for a passenger conveyor.

[Explanation of symbols]

 Reference Signs List 5 movable armature 8 push bolt 9 second transmission lever 11 micro switch 11A plunger 12 lock nut 13 gap gauge 13A, 13B gauge plate 14 first lock fitting 15 second lock fitting

Claims (2)

[Claims] 1. A disk brake type electromagnetic brake which moves a movable armature by an exciting current flowing through an electromagnetic coil, clamps a lining between the movable armature and a disk, and obtains a braking force by its frictional force, A transfer lever that amplifies the moving distance of the movable armature at a dimensional ratio with respect to a fulcrum provided in the middle, and a movement of the movable armature is detected by abutting the transfer lever at one end on the amplification side of the transfer lever. An electromagnetic brake adjustment device for a passenger conveyor, wherein a plunger-type micro switch is provided, and a push bolt and a lock nut for adjusting a gap between the transmission lever and the plunger-type micro switch are arranged at the other end of the transmission lever. A gap member having an engaging element for engaging the transmission lever and having the same thickness as the size of the gap; And a disc-shaped second lock fitting having a hexagonal groove for engaging the push nut and a disc-shaped first lock fitting having a hexagonal hole for engaging the lock nut. Brake adjustment device for passenger conveyors. 2. The gap gauge is formed of two gap gauges having predetermined thicknesses different from each other, one gap gauge having the size of the gap, and the other gap gauge operating the plunger type micro switch. With the same thickness as the dimensions, one end is bent to the thickness of the transmission lever, the other end of the other gap gauge projects from the end of one gap gauge, and two gap gauges are welded. The electromagnetic brake adjusting device for a passenger conveyor according to claim 1, wherein: