JPH05213566A - Hoisting machine brake disassembling method - Google Patents

Abstract

PURPOSE:To assemble/disassemble a brake easily only by one worker. CONSTITUTION:Levers 4a, 4b are held in the closed state through a binder. After pulling out a rod inserted into through-holes 7a-7c, a disassembling rod 10 is inserted into the through-holes 7a-7c, and nuts 11a-11d are screwed with screw parts provided at both ends of the disassembling rod 10 to hold the levers 4a, 4b respectively in the closed state. The above-mentioned binder is then removed from the levers 4a, 4b, and the nut 11a is removed to pull out a fulcrum pin 5a, thus removing one lever 4a. The nut 11c is then removed to pull out a fulcrum pin 5b, thus removing the other lever 4b.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for disassembling a brake for a hoisting machine.

[0002]

2. Description of the Related Art FIG. 4 is a front view showing a brake of a general hoisting machine. A hoisting machine 1 shown in FIG. 4 includes a brake drum 2 and a pair of slidable contacts with the brake drum 2. Arranged on both sides of the shoes 3a, 3b and the brake drum 2,
A pair of levers 4 that respectively support the shoes 3a, 3b
a, 4b and a pair of fulcrum pins 5 provided on the hoisting machine 1 and rotatably supporting the lower ends of the levers 4a, 4b.
a, 5b, and an electromagnet device 6 provided between the upper ends of the levers 4a, 4b and pushing the levers 4a, 4b away from the brake drum 2, respectively. 4b and a spring 8 for urging a spring force in a closing direction. The above-mentioned rod 7 is provided in the electromagnet device 6 and the levers 4a and 4b, and the through holes 7a and 7 are located on the straight lines.
b, 7c. In addition, such a brake,
For example, as described in Japanese Utility Model Laid-Open No. 53-70569, it is incorporated in a hoist mounted on a frame.

Conventionally, when disassembling the above-mentioned brake, two workers remove a nut screwed to the end of the rod 4 to remove the spring 8, open the lever 4a, and then open the lever 4a.
When b is opened, one person holds the lever 4a and the other person pulls out the fulcrum pin 5a, and then one person holds the lever 4b and the other one pulls out the fulcrum pin 5b. It was

[0004]

By the way, in the maintenance and inspection work of elevators, it is rationalized year by year in order to reduce the labor, and conventionally, as a part of such rationalization, a plurality of people, for example, two people are There is a tendency that one person is required to perform the required work. Further, even in the above-described conventional brake disassembling method for the hoisting machine, since two workers are required, improvement of the working method has been demanded.

The present invention has been made in view of the circumstances in the prior art, and an object thereof is to provide a brake disassembling method for a hoisting machine in which only one operator can easily disassemble the brake. To provide.

[0006]

In order to achieve this object, the present invention provides a brake drum connected to an elevator hoisting machine, a pair of shoes slidably contactable with the brake drum, and the brake drum. Between the levers, a pair of levers that are respectively disposed on both sides of the shoe and that respectively support the shoes, and a pair of fulcrum pins that are provided on the hoisting machine and that rotatably support one ends of the levers, respectively. An electromagnet device that is provided to push and open these levers in a direction away from the brake drum, a rod that is inserted into a through hole provided in the electromagnet device and the lever, and a lever that is provided at one end of the rod. In a brake disassembling method for a hoisting machine, which is used when disassembling a brake having a spring for urging a spring force in a closing direction with respect to Holding both levers in closed via the bundling body, withdrawing the rod in this state,
After removing the spring, insert a disassembling rod having threaded portions at both ends into the through holes, and screw nuts at both ends of the disassembling rod projecting from the lever, respectively. Both of them are held in a closed state, then the binding body is removed from these levers, the nut is removed from one end of the disassembling rod, one of the fulcrum pins is pulled out, and one of the levers is removed, The nut is removed from the other end of the disassembling rod, the other end of the fulcrum pin is pulled out, and the other end of the lever is removed.

[0007]

As described above, according to the present invention, first, the rod is pulled out from the through hole in a state where both of the pair of levers are closed via the binding body, and then the disassembling rod is inserted into the through hole, and both ends are inserted. Each of the levers is held in a closed state via a nut that is screwed into the threaded portion of the lever, and then the bundle is removed from these levers, and the nut at one end of the disassembling rod is loosened. After removing the lever, the nut at the other end of the disassembling rod is loosened and the other lever is removed, so there is no need to manually hold these levers for removal, which makes it easy for only one operator to do so. The brake can be disassembled. Further, when assembling the brake, by following the procedure reverse to the above-described procedure, only one operator can easily assemble the brake.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a brake disassembling method for a hoisting machine according to the present invention will be described below with reference to the drawings. FIG. 1 is a front view of a brake for explaining an embodiment of a brake disassembling method for a hoisting machine of the present invention, and FIG. 2 is a front view showing a usage state of a binding body used in the brake disassembling method described in FIG. 3 is a flowchart showing a work procedure of the brake disassembling method described in FIG. 1 and 2, the same parts as those in FIG. 4 described above are designated by the same reference numerals. That is, 1 is a hoisting machine, 2 is a brake drum, 3a and 3b are shoes, 4a,
Reference numeral 4b is a lever, 5a and 5b are fulcrum pins, 6 is an electromagnet device, and 7a, 7b and 7c are through holes.

In the brake disassembling method of this embodiment, as shown in FIG. 2, a binding body for binding the levers 4a and 4b, for example, a band 9 and, as shown in FIG. 1, the through holes 7a to 7c are inserted. Disassembling rod 10 and this disassembling rod 10
Nuts that are respectively screwed into the threaded portions on one end side of, for example, split nut type lock nuts (trade name: slip-on lock nuts manufactured by Hitachi Metals, Ltd.) 11a and 11b,
Similarly, split nut type lock nuts 11c and 11d that are respectively screwed into the threaded portions on the other end side are used. The first lock nut 11a is pressed against the outside of one lever 4a,
The second lock nut 11b is in pressure contact with one end of the electromagnet device 6, the third lock nut 11c is in pressure contact with the outside of the other lever 4b, and the fourth lock nut 11d is in contact with the electromagnet device 6.
Press against the other end of.

In this embodiment, as shown in FIG. 2, first, in step S1, the levers 4a, 4a and
b are bound together, and in this state, as step S2, the nut screwed to one end of the rod 7 shown in FIG. 4 is removed, the spring 8 shown in FIG. 4 is removed, and the rod 7 is inserted into the through holes 7a-7.
Remove from c. At this time, the levers 4a, 4b are
As shown in FIG. 3, the band 9 is held in a closed state. Next, as shown in FIG. 1, as step S3, the disassembling rod 10 is inserted into the through holes 7a to 7c,
Second lock nut 11b and fourth lock nut 1
The electromagnet device 6 is pinched by 1d, the first lock nut 11a is brought into pressure contact with the outside of one lever 4a, the third lock nut 11c is brought into contact with the outside of the other lever 4b, and these nuts 11a, 11c are used. Lever 4a,
4b are kept closed, and the band 9 is detached from these levers 4a and 4b as shown in FIG. 1 in step S4. Next, in step S5, the first lock nut 11a is loosened and removed, one lever 4a is rotated counterclockwise in FIG. 1, the fulcrum pin 5a is pulled out, and the lever 4a is removed. Loosen and remove the lock nut 11c of the lever 4, rotate the other lever 4b clockwise in FIG. 1, and pull out the fulcrum pin 5b to remove the lever 4b.
Remove b. When assembling this brake, the above-described work steps S1 to S6 are performed in the reverse order.

In the embodiment thus constructed, one person can sequentially remove the levers 4a and 4b, that is,
The brake can be easily disassembled by only one person, and the brake can be assembled by one person. Also, one lever 4a can be gradually opened by loosening the first lock nut 11a.
The rotation of a can be performed safely. Further, since the lock nut 11a is a split nut type, it is possible to prevent the lock nut 11a from loosening, and it is possible to reliably hold the lever 4a in the closed state. Similarly, the other lever 4b can be rotated safely, and the lever 4b can be securely held in the closed state.

[0012]

Since the present invention is configured as described above, only one operator can easily disassemble the brake, and similarly, the brake can be assembled by one person.

[Brief description of drawings]

FIG. 1 is a front view of a brake for explaining an embodiment of a brake disassembling method for a hoisting machine according to the present invention.

FIG. 2 is a front view showing a usage state of a binding body used in the brake disassembling method described in FIG.

FIG. 3 is a flowchart of the brake disassembling method described in FIG.

FIG. 4 is a front view showing a brake of a general hoisting machine.

[Explanation of symbols]

 1 hoisting machine 2 brake drum 3a, 3b shoe 4a, 4b lever 5a, 5b fulcrum pin 6 electromagnet device 7a-7c through hole 9 band (bundling body) 10 disassembling rod 11a-11d split nut type lock nut (nut)

Claims (1)

[Claims] 1. A brake drum connected to an elevator hoisting machine, a pair of shoes slidably contactable with the brake drum, and a pair of shoes arranged on both sides of the brake drum for supporting the shoes respectively. A pair of levers, a pair of fulcrum pins that are provided on the hoisting machine and rotatably support one ends of the levers, and a direction that separates these levers from the brake drum, provided between the levers. An electromagnet device that pushes open, a rod that is inserted into a through hole provided in the electromagnet device and the lever, and a spring that is provided at one end of the rod and that biases a spring force in a closing direction with respect to the lever. In a brake disassembling method of a hoisting machine used when disassembling a provided brake, first, both of the levers are held in a closed state via a binding body, In this state, pull out the rod,
After removing the spring, insert a disassembling rod having threaded portions at both ends into the through holes, and screw nuts at both ends of the disassembling rod projecting from the lever, respectively. Both of them are held in a closed state, then the binding body is removed from these levers, the nut is removed from one end of the disassembling rod, one of the fulcrum pins is pulled out, and one of the levers is removed, A method for disassembling a brake for a hoisting machine, wherein a nut is removed from the other end of the disassembling rod, the other end of the fulcrum pin is pulled out, and the other end of the lever is removed.