JP2018184985A - Gap adjustment jig of electromagnetic brake, and gap adjustment method of electromagnetic brake - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a gap adjustment jig and a gap adjustment method having high visibility to an adjustment amount and capable of preventing unexpected falling of the adjustment jig in a gap adjustment work of an electromagnetic brake of an elevator.SOLUTION: With respect to a gap adjustment jig 100 of an electromagnetic brake of an elevator, the gap adjustment jig includes cut-out portions 101A, 101B fitted to adjustment screws, magnets 103A-103C adsorbed to joints, and a scale 102 disposed in a hollow of a disc-shaped main body surface, on the disc-shaped main body, the cut-out portions have guide portions 101A for inserting the disc-shaped main body to the adjustment screws, and adjustment portions 101B fitted to the adjustment screws, and the magnets are disposed in a state of being kept into contact with at least two sides of the adjustment portion.SELECTED DRAWING: Figure 3

Description

  The present invention relates to an adjustment tool and an adjustment method for an electromagnetic brake of an elevator, and more particularly to a technique effective for an adjustment operation at a site where an elevator is installed.

  The electromagnetic brake installed in the elevator is a safety device that stops rotation of the prime mover (motor) and stops the car. It has a function of stopping the car at a predetermined position during operation of the elevator and maintaining the state, and a function of stopping the car and maintaining the state during inspection and repair. In general, an electromagnetic brake is applied in a state where electricity is not passed, and the brake is released when electricity is passed, and is constituted by an electromagnet, a coil, a spring, and the like.

  In the on-site gap adjustment work of this electromagnetic brake, conventionally, the gap is measured with a thickness gauge (gap gauge), and the adjustment screw is turned with a spanner or the like. However, since the adjustment work is performed based on the experience of the worker, the number of work increases and the work takes time.

  Also, electromagnetic brakes are often installed in the machine room at the top of the elevator or in a high place in the hoistway, and there is a risk that tools such as a wrench may be accidentally dropped during adjustment work on site. There are also the above issues.

  As a background art in this technical field, for example, there is a technique such as Patent Document 1. Patent Document 1 states that “a plurality of gauges inserted in gap portions located in the vicinity of a plurality of rods and having a thickness equivalent to a normal gap value, and connecting portions that connect these gauges so that their relative distances are displaceable. And a disc brake gap adjusting device that adjusts the gap dimension of the gap portion between the exciter and the amateur ”.

  Further, Patent Document 2 includes “a first connection body connected to the worker side, a second connection body connected to the tool, and a cable member connecting the first connection body and the second connection body. A tool for preventing the dropping of a tool is disclosed, in which the rope member has a retractable spiral cord in a part in the longitudinal direction, and at least the central portion of the rope member is bent in a double-folded manner. .

JP 2001-317574 A JP 2014-159061 A

  The electromagnetic brake of the elevator described above obtains a braking force by pressing a lining against the drum. There is a gap between the drum and the lining, and if the gap is not properly adjusted, the car will move while the lining is in contact with the drum, leading to a reduction in braking force. In order to prevent such a problem, it is necessary to regularly perform maintenance work and adjust the gap.

  In the electromagnetic brake that adjusts the gap by the adjusting screw, the measurement of the gap and the fine adjustment of the adjusting screw are repeatedly performed. Therefore, the opportunity to change the tool increases and the possibility of dropping the tool increases. As a fall prevention measure, a method of attaching a cord to the tool as in the above-mentioned Patent Document 2 can be considered, but in order to attach it, it is necessary to process the tool, and the range of use is limited.

  Further, as described in Patent Document 1, the method of adjusting by turning the adjusting screw while the thickness gauge (gap gauge) is directly inserted into the gap has a problem that it cannot be pulled out from the gap after the adjustment.

  SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a gap adjusting jig and a gap adjusting method capable of preventing the accidental dropping of the adjusting jig and providing high visibility of the adjusting amount in the gap adjusting work of the electromagnetic brake of the elevator. There is.

  In order to solve the above-mentioned problems, the present invention includes an electromagnet, a core that attracts an amateur against the force of a spring by the magnetic force of the electromagnet, and an elevator hoisting machine that is attracted by the core. An electromagnetic brake comprising: an amateur to be in a state; an adjusting screw that adjusts a gap between the core and the armature that is a movable range of the armature; and a joint that connects the core and the armature to an electromagnetic brake frame. A gap adjusting jig, wherein the gap adjusting jig includes a notch that is fitted to the disc-shaped main body and the magnet that is attracted to the joint, and a depression on the surface of the disc-shaped main body. And the notch is fitted to the adjustment screw and a guide portion for inserting the disc-shaped main body into the adjustment screw. It has a knurl, wherein the magnet is characterized in that it is arranged in contact with at least two sides of the adjustment portion.

  The present invention also includes an electromagnet, a core that attracts an amateur against the force of a spring by the magnetic force of the electromagnet, an amateur that is attracted to the core and opens an elevator hoist, An electromagnetic brake gap adjusting method comprising: an adjusting screw for adjusting a gap between the core and the amateur, which is a movable range of the amateur, and a joint for connecting the core and the amateur to an electromagnetic brake frame. The notch portion of the gap adjusting jig is inserted into the adjusting screw, the adjusting screw and the notch portion are fitted, and the gap adjusting jig is inserted into the gap adjusting jig by the magnet embedded in the gap adjusting jig. Rotate the gap adjusting jig while adsorbing it to the joint and checking the adjustment amount with the scale provided in the recess on the surface of the gap adjusting jig. It was characterized by adjusting the gap between the armature and the core.

  ADVANTAGE OF THE INVENTION According to this invention, in the gap adjustment work of the electromagnetic brake of an elevator, the visibility of the adjustment amount is high, and the gap adjustment jig and the gap adjustment method that can prevent the adjustment jig from being accidentally dropped can be realized. it can.

  Problems, configurations, and effects other than those described above will be clarified by the following description of embodiments.

It is a figure showing the whole elevator outline concerning one embodiment of the present invention. It is a figure which shows the movable part of the electromagnetic brake of the elevator which concerns on one Embodiment of this invention. It is a top view which shows the angle adjustment jig (gap adjustment jig) which concerns on one Embodiment of this invention. It is sectional drawing of the code | symbol 120 direction in FIG. FIG. 3 is a view in the direction of arrow 500 in FIG. 2. It is sectional drawing of the code | symbol 600 direction in FIG. It is a figure which shows the usage example of 2 base point markers which concern on one Embodiment of this invention. It is a top view which shows the angle adjustment jig (gap adjustment jig) which concerns on one Embodiment of this invention.

  Embodiments of the present invention will be described below with reference to the drawings. In the drawings, the same components are denoted by the same reference numerals, and detailed description of the overlapping portions is omitted.

  A gap adjusting jig and a gap adjusting method used for adjusting the gap of the electromagnetic brake of the elevator according to the first embodiment will be described with reference to FIGS. FIG. 1 is a diagram showing an overview of the entire elevator that is the subject of the present invention. In the present embodiment, description will be made using an example of a traction type elevator having a machine room on the hoistway shown in FIG. 1, but the scope of application of the present invention is not limited to this, and a hoisting machine and a control The present invention can also be applied to a machine room-less type elevator in which a panel is installed in a hoistway.

  FIG. 2 is an enlarged view of the movable part of the electromagnetic brake 20 in FIG. 3 is a plan view showing an angle adjusting jig (gap adjusting jig) 100 used for adjusting the gap of the electromagnetic brake 20, and FIG. 4 is a cross-sectional view in the direction of reference numeral 120 in FIG. FIGS. 5 and 6 are a sectional view taken in the direction of the reference numeral 500 in FIG. 2 and a sectional view in the direction of reference 600, respectively, and show how the gap of the electromagnetic brake 20 is adjusted by the angle adjusting jig (gap adjusting jig) 100. ing.

  An angle adjusting jig (gap adjusting jig) 100 used in the elevator according to the present embodiment is an elevator electromagnetic brake 20 in which a hoisting machine 2 is installed in, for example, a machine room 6 as shown in FIGS. Used to adjust the gap 24 (FIG. 2).

  The elevator includes a car 1 disposed in a hoistway 5 and a counterweight 3 connected to the car 1 via a main rope 4. Further, the elevator includes a hoisting machine 2 around which a main rope 4 is wound in order to raise and lower the car 1 and the counterweight 3.

  The hoisting machine 2 includes a sheave 7 that is rotatably provided, a motor unit (not shown) for rotating the sheave 7 installed inside the hoisting machine 2, and a sheave 7 that is provided on the upper part and rotates. An electromagnetic brake 20 for braking the motor. An angle adjusting jig (gap adjusting jig) 100 is used to adjust the operating range of the electromagnetic brake 20.

  Although details of the angle adjustment jig 100 will be described later, as shown in FIG. 3, the angle adjustment jig 100 has notches 101 </ b> A and 101 </ b> B inserted into an adjustment screw 23 for adjusting the electromagnetic brake 20 with a disk-shaped jig. In order to prevent the angle adjusting jig 100 from being dropped into the hoistway 5 when the adjusting screw 23 is inserted into the adjusting screw 23 and the adjusting screw 23 is turned, magnets 103 </ b> A to 103 </ b> C that are fall prevention members are provided.

  As shown in FIG. 2, the electromagnetic brake 20 includes a core 21, an armature 22, an adjusting screw 23, and a joint 25. The lining 26 is pressed against the drum 27 connected to the sheave 7 to brake the driving of the sheave 7 (winding machine 2). The lining 26 is connected to the amateur 22 and moves in conjunction with it. The core 21 has an electromagnet inside, and attracts the armature 22 by energizing and energizing it, and moving the electromagnet 20 in the opposite direction to the drum 27 opens the electromagnetic brake 20. Therefore, there is a gap 24 between the core 21 and the amateur 22, and this gap 24 is adjusted by an adjusting screw 23. The core 21 and the armature 22 are connected to the electromagnetic brake frame by a joint 25.

  The core 21 is generally called a brake core, and has an electromagnet and a coil spring. The armature 22 is also called an armature and refers to a movable iron piece that forms a magnetic circuit.

  When the electromagnetic brake 20 is not energized, it is in a braking state by the force of the spring. Therefore, if the gap 24 between the core 21 and the armature 22 is not within the specified range, the car 1 moves without the lining 26 and the drum 27 being separated from each other, so that the braking force is reduced. In order to prevent such a problem, it is necessary to perform maintenance work and adjust the gap 24 between the core 21 and the amateur 22 using the angle adjusting jig 100 and a base point marker 150 described later.

  The gap 24 is adjusted by inserting the angle adjusting jig 100 into the adjusting screw 23 from between the armature 22 and the joint 25 as shown in FIG. The gap is measured and adjusted by turning the adjusting screw 23 with the angle adjusting jig 100 by the adjustment amount. At this time, the base marker 150 is used as a mark when viewing the rotation angle. The base marker 150 has a line drawn on the plate-shaped magnet, and is attached to the amateur 22 to mark the scale 102 (see FIG. 3). When not in use, the paste is stored in the recess 121 of the angle adjusting jig 100 shown in FIG.

  As shown in FIG. 3, the angle adjusting jig (gap adjusting jig) 100 includes notches 101A and 101B for insertion into the adjusting screw 23, and a scale 102 at regular intervals on the surface for viewing the rotation angle. I have. The notches 101 </ b> A and 101 </ b> B include a guide portion 101 </ b> A for insertion into the adjustment screw 23 and an adjustment portion 101 </ b> B that fits into the adjustment screw 23 when adjusting the adjustment screw 23.

  When the angle adjusting jig 100 is fitted to an adjustment screw that is difficult to see hidden behind the core 21, the guide portion 101 </ b> A has an angle 104 of about 90 degrees so as to serve as a guide. The adjusting portion 101B has a shape that matches the adjusting screw 23, and magnets 103A, 103B, and 103C that are prevented from falling by being attracted to each other by the magnetic force with the joint 25 of FIG. 2 are embedded in each side.

  If the angle adjusting jig 100 is a magnet, the strength of the jig is reduced, and the arm 22 or the core 21 is attracted to the friction and becomes hard to move. Therefore, in this embodiment, an adjusting screw is attached to each side of the adjusting unit 101B. Magnets 103 </ b> A, 103 </ b> B, and 103 </ b> C are arranged so as to be in direct contact with 23. Even if the magnets 103A, 103B, and 103C are attracted to the adjusting screw 23 and the core 21 and the armature 22 of the electromagnetic brake 20 are tilted as shown in FIG. Without adjusting the electromagnetic brake gap.

  FIG. 4 is a sectional view of the angle adjusting jig 100 in FIG. The scale 102 of the angle adjusting jig 100 is drawn in a recess (concave portion) 121 so as not to be rubbed against the joint 25 of FIG. The magnets 103B and 103C are embedded in the middle of the thickness of the angle adjusting jig 100. The angle adjusting jig 100 is made of a magnetic material, and the magnet 103C is covered with the magnetic material on the surface side 100A, and the back side 100B is not covered. Therefore, the attracting force of the magnets 103A to 103C is weaker on the front side 100A than on the rear side 100B. As a result, as shown in FIG. 2, when inserting between the armature 22 and the joint 25 during the gap adjusting operation, the surface side 100A and the armature 22 are attracted to each other so that the operation is not delayed.

  In addition, since the back surface side 100B is spaced apart from the surface of the angle adjustment jig 100 to the magnets 103A to 103C to create a space 122, when it is brought into contact with the joint 25, the attracting force is too strong so that it does not move. Adsorption power is weakened to the extent.

  FIG. 5 shows the core 21 and the angle adjusting jig 100 viewed from the direction of arrow 500 in FIG. Since the adjusting screw 23 is hidden behind the core 21 or the like, the angle adjusting jig 100 is inserted using the fixing bolt 28 as a mark. Since it is difficult to see the direction of the adjusting screw 23, the angle adjusting jig 100 is provided with the guiding portion 101A having an angle 104 of about 90 degrees as a guide as described above.

  FIG. 6 shows a state when the angle adjusting jig 100 is removed as viewed from the cross-sectional direction 600 in FIG. Depending on the angle of the adjusting screw 23 after adjustment and the orientation of the notches 101A and 101B of the angle adjusting jig 100, it becomes difficult to remove the angle adjusting jig 100 from the adjusting screw 23. The angle 104 spreads about 90 degrees.

  As described above, according to the gap adjustment jig and the gap adjustment method of the present embodiment, the gap can be adjusted while measuring the rotation angle, and the jig can be prevented from dropping during adjustment by attracting the magnet. . Thereby, the workability improvement and safety improvement at the time of the gap adjustment work of the electromagnetic brake of an elevator can be aimed at.

  With reference to FIG. 7, a gap adjustment method using a base point marker will be described. FIG. 7 shows an example of using two base point markers A150 and base point markers B151. In addition to the base point marker A150 (see FIG. 2) to be affixed to the amateur 22, another base point marker B151 can be used as a mark indicating the target scale 102 during adjustment.

  The base point marker A150 is attached to the core 21 as usual, as shown in FIG. After measuring the gap 24, the base point marker B151 is attached to the scale of the adjustment amount in the depression 121 (see FIG. 4) of the angle adjustment jig 100. The angle adjusting jig 100 is turned and adjusted so that the locations indicated by the base marker A150 and the base marker B151 coincide.

  As described above, according to the gap adjustment method of the present embodiment, the scale can be easily read by attaching the base point marker B151 in advance to the position of the scale 102 of the desired adjustment amount (rotation amount), and the angle adjustment. By rotating the adjustment screw 23 with the jig 100 and aligning the base point marker B151 with the base point marker A150, a gap adjustment operation can be easily performed even by a non-expert.

  With reference to FIG. 8, the gap adjusting jig according to the third embodiment will be described. FIG. 8 shows a modification of the angle adjusting jig (gap adjusting jig) 100 shown in FIG. 3, and the scale 102 and the like are omitted so that the feature of the shape can be easily understood.

  The angle adjustment jig (gap adjustment jig) of the present embodiment has an angle relief part (cut-off part) in the adjustment part (corresponding to the notch part 101B in FIG. 3) so that it can cope with the case where the head of the adjustment screw 23 is hexagonal. A notch 201) is provided. (Angle adjusting jig hexagonal bolt-adaptive adjusting part 200) The angular relief part (notch part) 201 is provided in an empty space without the magnet 103C of FIG.

  Also in the present embodiment, as in the first and second embodiments, it is possible to improve workability and safety during gap adjustment work of the electromagnetic brake of the elevator.

  In addition, this invention is not limited to an above-described Example, Various modifications are included. For example, the above-described embodiments have been described in detail for easy understanding of the present invention, and are not necessarily limited to those having all the configurations described. Further, a part of the configuration of one embodiment can be replaced with the configuration of another embodiment, and the configuration of another embodiment can be added to the configuration of one embodiment. Further, it is possible to add, delete, and replace other configurations for a part of the configuration of each embodiment.

DESCRIPTION OF SYMBOLS 1 ... Car 2 ... Winding machine 3 ... Balance weight 4 ... Main rope 5 ... Hoistway 6 ... Machine room 7 ... Sheave 20 ... Electromagnetic brake 21 ... Core 22 ... Amateur 23 ... Adjustment screw 24 ... Gap 25 ... Joint 26 ... Lining 27 ... Drum 28 ... Fixing bolt 100 ... Angle adjustment jig (gap adjustment jig)
100A ... front side (of angle adjustment jig) 100B ... back side (of angle adjustment jig) 101A ... notch (induction part)
101B ... Notch part (adjustment part)
DESCRIPTION OF SYMBOLS 102 ... Scale 103A ... Magnet 103B ... Magnet 103C ... Magnet 104 ... Angle more than 90 degree | times 120 ... Angle adjustment jig cross-sectional direction 121 ... Indentation (recessed part)
122 ... Space 150 ... Base marker A
151: Base marker B
200 ... Angle adjustment jig Hexagon bolt compatible adjustment part 201 ... Square relief part (notch part)
202 ... Hexagon bolt head 500 ... FIG. 5 arrow direction 600 ... FIG. 6 cross-sectional direction.

Claims (7)

A core containing an electromagnet, and attracting the amateur against the force of the spring by the magnetic force of the electromagnet;
An amateur that is sucked into the core and opens the elevator hoist,
An adjusting screw for adjusting a gap between the core and the amateur, which is a movable range of the amateur,
A joint for connecting the core and the armature to an electromagnetic brake frame, and a gap adjusting jig for an electromagnetic brake,
The gap adjusting jig includes a notch that is fitted to the adjusting screw in a disc-shaped main body,
A magnet attracted to the joint;
A scale provided in a depression on the surface of the disk-shaped main body,
The notch has a guide part for inserting the disc-shaped main body into the adjustment screw, and an adjustment part fitted to the adjustment screw,
The electromagnetic brake gap adjusting jig, wherein the magnet is disposed in contact with at least two sides of the adjusting portion. The gap adjusting jig of the electromagnetic brake according to claim 1,
When the gap adjusting jig is viewed in plan, the adjusting portion has a substantially rectangular shape,
The gap adjusting jig for an electromagnetic brake, wherein the magnet is disposed in contact with each of three sides fitted to the adjusting screw. The gap adjusting jig for an electromagnetic brake according to claim 1 or 2,
The amateur has a first base mark serving as a reference for gap adjustment,
A second base point mark indicating a desired gap adjustment amount is disposed on the scale, the adjustment screw is fitted to the adjustment portion, and the gap adjustment jig is rotated to place the second base point mark on the first scale. A gap adjusting jig for an electromagnetic brake, wherein a gap between the core and the amateur is adjusted by matching with a base point mark of the electromagnetic brake. The gap adjusting jig for an electromagnetic brake according to claim 1 or 2,
A gap adjusting jig for an electromagnetic brake, wherein an angular relief portion for fitting the adjusting screw is provided in the adjusting portion. The gap adjusting jig for an electromagnetic brake according to claim 1 or 2,
The magnet is embedded in the gap adjusting jig,
The gap adjusting jig of the electromagnetic brake, wherein the gap adjusting jig is covered with the disk-shaped main body on one plane side and exposed to the surface through a predetermined space on the other plane side. Ingredients. A core containing an electromagnet, and attracting the amateur against the force of the spring by the magnetic force of the electromagnet;
An amateur that is sucked into the core and opens the elevator hoist,
An adjusting screw for adjusting a gap between the core and the amateur, which is a movable range of the amateur,
A joint for connecting the core and the armature to an electromagnetic brake frame, and an electromagnetic brake gap adjusting method comprising:
Insert the notch of the gap adjustment jig into the adjustment screw, and fit the adjustment screw and the notch,
The gap adjusting jig is attracted to the joint by a magnet embedded in the gap adjusting jig,
The gap adjustment jig is rotated to adjust the gap between the core and the amateur while confirming the adjustment amount with a scale provided in the depression on the surface of the gap adjustment jig. Electromagnetic brake gap adjustment method. A gap adjusting method for an electromagnetic brake according to claim 6,
Affixing a base mark indicating the desired gap adjustment amount on the scale,
Adjusting the gap between the core and the amateur by rotating the gap adjusting jig and aligning the reference mark of the scale with another reference mark serving as a reference for adjusting the gap provided in the amateur. A method for adjusting a gap of an electromagnetic brake.

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