JPH0742775A - Disk brake adjusting jig - Google Patents

Abstract

PURPOSE:To provide a disk brake adjusting jig that is made up of improving the extent of working properties in time of installation and maintenance and simultaneously of securing braking force for an adjusting reference in an easy manner. CONSTITUTION:A gear 23A is attached to the end of an input shaft 7 via a mounting bolt 22. This gear 23A is composed of a disklike stationary part 24A and a rotating part provided with teeth on an outer boundary of this stationary part via a bearing. In this constitution, three pinions 27A engaged with each gap adjusting nut 20 are meshed with this gear 23A.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disc brake used in an elevator hoisting machine, and more particularly to a disc brake adjusting jig for initial adjustment of the apparatus.

[0002]

2. Description of the Related Art A disk brake used in a conventional elevator hoisting machine will be described with reference to FIGS. The rope type elevator was incorporated into the hoisting machine 1 by suspending the car 4 and the weight 5 on both ends of the main rope 3 wound around the main sheave 2 of the hoisting machine 1 installed in the machine room above the hoistway. The electric motor 6 controls the raising and lowering of the car 4. A clutch type disc brake 8 is attached to the hoisting machine 1 on the side opposite to the motor of the input shaft 7.

In the clutch type disc brake 8, a frame 10 containing a coil 9 is fixed to a gear case 11 of the hoisting machine 1, and an armature 12 and a disc 13 are sandwiched, and a plate 14 is 120 ° at three positions with respect to an axis. They are attached to the frame 10 via gap adjusting bolts 15 which are spaced apart from each other.

A boss 16 is attached to the input shaft 7 so that the disc 13 can move in the axial direction by meshing with a spline 16a of the boss 16. The armature 12 includes a gap adjusting bolt. The collar 17 built into the 15 can be used as a guide to move in the axial direction.

On the other hand, the frame 10 has an armature 12,
Springs 18 for pressing the disk 13 against the plate 14 are attached to the input shaft 7 at intervals of 120 ° via torque adjusting bolts 19.

In the above construction, when the elevator car 4 is stopped, the current in the coil 9 is cut off, so that the armature 12 and the disk are stopped by the spring 18.
13 is pressed against the plate 14, the disk 13 and the boss 16
Stops and the input shaft 7 is braked.

On the contrary, when the car 4 is running, the coil 9 is energized, the armature 12 overcomes the repulsive force of the spring 18, and the frame 10 is attracted to the armature 12 and the disk.
13 and the plate 14 are released, and the input shaft 7 is in a state of freely rotating.

[0008]

By the way, since the conventional disc brake is constructed as described above, when adjusting the gap between the frame 10 and the armature 12, the gap mounted on the gap adjusting bolt 15 is adjusted. The adjustment was performed by rotating the adjusting nut 20 with a spanner.

However, since there are three gap adjusting bolts 15 and the same work is required, it is very difficult to adjust the gap for each of them, and the gap is not adjusted uniformly. In this case, there is a fear that the braking force as the adjustment reference cannot be obtained.

Further, the torque adjusting nut 21 attached to the torque adjusting bolt 19 has the same risk as described above.

Therefore, an object of the present invention is to provide a disc brake adjusting jig which improves the workability at the time of installation and maintenance and easily obtains a braking force as a reference for adjustment.

[0012]

In order to achieve the above object, the present invention has a large gear rotatably mounted on an input shaft of a disc brake, and a plurality of gap adjusting nuts which are engaged with the large gear. Alternatively, it is composed of a plurality of small gears that are locked to a plurality of torque adjusting nuts.

[0013]

With the above construction, when the large gear is rotated, the plurality of small gears rotate simultaneously at the same time. Therefore, the gap adjusting nut or the torque adjusting nut locked to each small gear is It can be rotated by the same amount and the gap or torque can be adjusted simultaneously.

[0014]

Embodiments of the present invention will be described below with reference to the drawings. 1A and 1B show an embodiment of the present invention. FIG. 1A is a front view and FIG. 1B is a sectional view taken along the line AA of FIG. 7A and 7B, 7 is an input shaft, 9 is a coil, 10 is a frame, 11 is a gear case, 12 is an armature, 13 is a disk, 14 is a plate, 15 is a gap adjusting bolt, and 16 is a boss. , 16a is spline, 17 is color, 18
Is a spring, 19 is a torque adjusting bolt, 20 is a gap adjusting nut, 21 is a torque adjusting nut, the input shaft 7 is provided with a screw hole 7a at its end, and a large gear 23A is attached via a mounting bolt 22. Mounted.

This large gear 23A is provided with a through hole 24a for the mounting bolt 22 as shown in FIGS.
Disk-shaped fixed part 24A with a diameter larger than the end diameter
And a rotating portion 26 rotatably supported by the fixed portion 24A via a bearing 25A and provided with teeth 26a provided on the outer periphery at an appropriate pitch and screw holes 26b for attaching a handle described later.
It is composed of A and. Here, the outer periphery of the fixed portion 24A and the inner periphery of the rotating portion 26A are shaped so that the bearing 25A can be attached. Three small gears 27A respectively arranged at the positions of the gap adjusting bolts 15 mesh with the large gear 23A.

This small gear 27A has substantially the same thickness as the large gear 23A, and has teeth 27a meshing with the teeth 26a of the large gear 23A on the outer periphery as shown in FIGS. A hexagonal hole 27b into which an adjusting nut (shown by reference numeral 20 in FIGS. 1A and 1B) can be inserted is provided. The hexagonal hole 27b may be replaced with a dodecagonal hole.

On the other hand, a handle 28 for manually rotating the large gear 23A is attached to the screw hole 26b provided in the rotating portion 26A of the large gear 23A, and the meshing tooth width of the large gear 23A and the small gear 27A is attached. The seat 29 is inserted between the pinion 27A and the plate 14 in order to align the two.

Next, the operation (gap adjustment) of the embodiment configured as described above will be described. First, the large gear 23A is fixed to the end of the input shaft 7 via the mounting bolt 22. At this time, the rotating portion 26A is rotatable via the bearing 25A. A handle 28 is attached to the large gear 23A. On the other hand, the three small gears 27A and the teeth 27a are respectively the large gears 23A.
While engaging with the tooth 26a of the above, the hexagonal hole 27b is inserted into the gap adjusting nut 20 and attached.

After that, when the handle 28 is turned, the large gear 23A
The rotation part 26A of the rotation rotates, and this rotation causes three small gears.
27A rotates at the same time. Since each pinion gear 27A rotates each gap adjusting nut 20 by the same amount, the gap between the frame 10 and the armature 12 can be adjusted at the same time.

Next, another embodiment of the present invention will be described. 4A and 4B show another embodiment of the present invention. FIG. 4A is a front view and FIG. 4B is a sectional view taken along line D-D of FIG. 23A and 23B, 23B is a large gear attached to the input shaft 7 via the attachment bolt 22, 27B is a small gear which is arranged at the position of the torque adjusting bolt 19 and meshes with the large gear 23B. Others are the same as those in FIGS. 1A and 1B described above.

The large gear 23B has substantially the same structure as that of the large gear 23A described above. As shown in FIGS. 2 (a) and 2 (b), the large gear 23B rotates with a fixed portion 24B via a bearing 25B. Rotating part that is freely supported and has screw holes 26b for mounting the teeth 26a and the handle 28, which are provided on the outer periphery at an appropriate pitch.
It is composed of 26B and. Here, the outer periphery of the fixed portion 24B and the inner periphery of the rotating portion 26B are shaped so that the bearing 25B can be attached.

The small gear 27B has substantially the same structure as the small gear 27A described above, and has substantially the same thickness as the large gear 23B. As shown in FIGS. 3 (a) and 3 (b), the outer circumference of the small gear 23A is larger than that of the large gear 23A. tooth
A tooth 27a that meshes with 26a is provided, and a hexagonal hole 27c into which a torque adjusting nut (denoted by reference numeral 21 in FIGS. 1A and 1B) can be inserted is provided at the center.

On the other hand, the seat 29 is inserted between the small gear 27B and the plate 14 in order to match the meshing tooth widths of the large gear 23B and the small gear 27B.

Next, the operation (torque adjustment) of another embodiment configured as described above will be described. First, the large gear 23B is fixed to the end of the input shaft 7 via the mounting bolt 22. At this time, the rotating portion 26B is rotatable via the bearing 25B. A handle 28 is attached to the large gear 23B.
On the other hand, the three small gears 27B and the teeth 27a respectively
It is engaged with the tooth 26a of B and is inserted by inserting the torque adjusting nut 21 into the hexagonal hole 27c.

After that, when the handle 28 is turned, the large gear 23B
The rotating part 26B of the device rotates, and this rotation causes the three small gears to rotate.
27B rotates at the same time. Since each pinion 27B rotates each torque adjusting nut 21 by the same amount, each spring 18
A uniform spring force can be applied to the.

By making the gap adjusting nut 20 and the torque adjusting nut 21 have the same shape and arranging them on the same pitch circle, the gap adjustment and the torque adjustment can be performed by the same jig.

[0027]

As described above, according to the present invention, a large gear rotatably mounted on the input shaft of the disc brake, and a plurality of gap adjusting nuts or a plurality of torques that are engaged with the large gear and are provided. Since it is composed of multiple small gears that are locked to the adjustment nut, it is possible to adjust the gap adjustment bolts or torque adjustment bolts that are placed at multiple locations at the same time, which improves workability during installation and maintenance. It is possible to provide a disc brake adjusting jig that is improved and easily obtains an adjustment reference braking force.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention, in which FIG. 1 (a) is a front view and FIG. 1 (b) is a sectional view taken along line AA of FIG. 1 (a).

2 shows a large gear used in one embodiment of the present invention, FIG. 2 (a) is a front view, and FIG. 2 (b) is a sectional view taken along line BB of FIG. 2 (a).

FIG. 3 shows a pinion gear used in one embodiment of the present invention, FIG. 3A is a front view, and FIG. 3B is a sectional view taken along line CC of FIG. 3A.

4A and 4B show another embodiment of the present invention, in which FIG. 4A is a front view and FIG. 4B is a sectional view taken along the line D-D in FIG. 4A.

FIG. 5 is a front view showing the outline of the overall configuration of an elevator.

FIG. 6 is a plan view showing an outline of an elevator hoisting machine.

FIG. 7 shows a conventional clutch type disc brake, FIG. 7 (a) is a front view, and FIG. 7 (b) is a sectional view taken along line EE of FIG. 7 (a).

[Explanation of symbols]

7 ... Input shaft, 10 ... Frame, 12 ... Armature, 14 ... Plate, 15 ... Gap adjusting bolt, 18 ... Spring,
19 ... Torque adjusting bolt, 20 ... Gap adjusting nut,
21 ... Torque adjusting nut, 23A, 23B ... Large gear, 27A,
27B ... small gear, 28 ... handle.

Claims (3)

[Claims] 1. A large gear rotatably mounted on an input shaft of a disc brake, and a plurality of small gears engaged with the large gear and locked with a plurality of gap adjusting nuts or a plurality of torque adjusting nuts. A disc brake adjusting jig characterized by comprising 2. A large gear is fixedly mounted on an input shaft, and a rotating portion is provided on the outer periphery of the fixed portion via a bearing and a plurality of teeth are provided on the outer periphery for meshing with the small gear. The disc brake adjusting jig according to claim 1, which is configured. 3. The disc brake adjusting jig according to claim 1, wherein a polygonal hole into which a gap adjusting nut or a torque adjusting nut can be inserted is provided in the center of the small gear.