JP2008213991A - Elevator braking device rubbing device - Google Patents

Abstract

A sliding device for an elevator braking device capable of performing a braking operation of a braking piece of a braking device installed in a building in a short time.
A driving sheave is provided in a hoisting machine 1 having a driving sheave 4 wound around a suspension means for suspending a car, and a braking piece 8 is pressed against a braking body 5 that rotates together with the driving sheave. A braking device for braking the rotation of the idler 31, which is detachably mounted between the suspension means and the drive sheave, and idles the drive sheave with respect to the suspension means; A sliding control device 32 that rotates the braking body in a state where the member is mounted, presses the braking piece against the braking body, and slides the braking piece.
[Selection] Figure 3

Description

  The present invention relates to a sliding device for an elevator braking device in which braking pieces of an elevator braking device installed in a building are slid together.

  Elevator braking devices are regularly inspected for safety reasons. In a conventional elevator braking device, the braking device is operated with respect to the hoisting machine driving the elevator car up and down, and the braking torque is calculated from the deceleration to determine whether or not it is acceptable (for example, Patent Document 1). reference).

JP-A-6-263353 (paragraph numbers 15 to 17, FIGS. 2 to 5)

By the way, in the elevator braking device, the braking torque changes due to dirt or wear of the braking piece due to long-term use. Although such a change in braking torque can be inspected according to Patent Document 1, when the braking torque is determined to be incompatible, it is necessary to replace the braking piece. Furthermore, it is necessary to adjust the brake piece so as to obtain a stable brake torque by sliding the brake piece on the brake body.

Conventionally, the operation disclosed in the above-mentioned Patent Document 1, that is, the braking device is operated after rotating the hoisting machine, and the inertia force and the rotation due to the unbalanced torque of the carriage and the counterweight are The brake piece is slid on the brake body by pressing the brake body against the brake body for braking. However, the rubbing time is the time from when the brake piece presses against the braking body until the rotation of the braking body stops, that is, the braking time, which is short and the amount of work in rubbing is insignificant. Therefore, in order to make the braking torque stabilize until the braking torque is stabilized, it is necessary to repeat braking and rotation many times, and a long time is required. For this reason, there has been a problem that the work load is increased, and that elevator users are inconvenienced.

The present invention has been made to solve such a problem, and to obtain a sliding device for an elevator braking device capable of performing a braking operation of a braking piece of a braking device installed in a building in a short time. It is an object.

  In the sliding device for an elevator braking device according to the present invention, a braking piece is provided on a hoisting machine having a driving sheave that is wound around a suspension means for suspending a car, and a braking piece that rotates together with the driving sheave. A braking device for a braking device that brakes rotation of a driving sheave by pressing, and is detachably mounted between the suspension means and the driving sheave, and the drive sheave is idled with respect to the suspension means. An idling member to be rotated, and a sliding control device that rotates the braking body while the idling member is mounted, and presses the braking piece against the braking body to slide the braking piece.

  According to the present invention, since the braking member is rotated and the braking pieces are slid in a state in which the idler member that idles the drive sheave is mounted, the amount of work in sliding can be increased, and the sliding operation time can be shortened.

Embodiment 1 FIG.
1 to 13 show a sliding device for an elevator braking device according to Embodiment 1 of the present invention.
FIG. 1 is an elevator hoistway longitudinal section showing an enlarged main part, and FIG. 2 is an enlarged view showing a hoisting machine. In the figure, a hoisting machine 1 is installed in a machine room 2, and a driving sheave 4 and a cylindrical braking body 5 are attached to a rotating shaft 3 of the hoisting machine 1. The hoisting machine 1 is provided with an electric motor 6 that rotates the driving sheave 4 and the braking body 5. The hoisting machine 1 is equipped with a braking device 7 that brakes the rotation of the drive sheave 4.

The braking device 7 is supported on the body of the hoisting machine 1 by pins 9a and 9b and brake pieces 8a and 8b that are arranged on the left and right sides of the braking body 5 and abut against the outer peripheral surface of the braking body 5 to generate braking torque. Arms 10a and 10b that swing and advance and retract the brake pieces 8a and 8b are provided. The braking device 7 includes braking springs 11a and 11b that generate braking torque by pressing the braking pieces 8a and 8b against the braking body 5 via the arms 10a and 10b. The braking device 7 includes levers 13a and 13b supported by pins 12a and 12b and swinging on the main body of the hoisting machine 1, and the brake pieces 8a and 8b via the levers 13a and 13b and the rods 14a and 14b. And an electromagnetic device 15 for releasing the pressing force.
As described above, the braking device 7 is configured. In the following description, when the component parts are collectively referred to, the reference numerals from which a and b are deleted are used.

A rope 20, which is a suspension means, is wound around the driving sheave 4, one of which is suspended from the driving sheave 4 to suspend a car 21, and the other is suspended via a deflecting wheel 22. The counterweight 23 is suspended. Moreover, the control apparatus 24 which operates the electric motor 6 of the hoisting machine 1 and the electromagnetic device 15 of the braking device 7 is provided. A shock absorber 25 is provided below the counterweight 23 at the bottom of the hoistway.

Next, the operation of the elevator configured as described above will be described.
In an initial state, that is, in a state where the elevator is stopped, the control device 24 stops energization of the electric motor 6 and brakes the braking device 7. At this time, the braking device 7 generates a braking torque on the braking body 5 and stops the braking body 5 and the driving sheave 4. The braking of the braking device 7 is performed as follows. The electromagnetic device 15 is demagnetized, and the braking spring 11 applies a pressing force to the arm 10. Then, a pressing force is transmitted from the arm 10 to the braking piece 8, and the braking piece 8 presses the braking body 5 to give a braking torque to brake the rotation of the braking body 5 and the driving sheave 4.

Next, when the elevator is operated, the control device 24 energizes the motor 6 and opens the braking device 7. The opening of the braking device 7 is performed as follows. The electromagnetic device 15 is excited and an opening force against the pressing force of the brake spring 11 is transmitted to the arm 10 via the lever 13 and the rod 14. Then, the arm 10 swings in the opening direction, the braking piece 8 is detached from the braking body 5 and the braking torque is removed. As a result, the braking body 5 and the driving sheave 4 rotate, and the car 21 and the counterweight 23 are lifted and lowered in a slidable manner via the rope 20.

Next, the rubbing apparatus 30 will be described. FIG. 3 is a view showing a state in which the sliding device 30 of the braking device 7 is mounted. The sliding device 30 operates the idling member 31 mounted between the driving sheave 4 and the rope 20, the electric motor 6 of the hoist 1, and the electromagnetic device 15 of the braking device 7 to brake the braking piece 8. And a sliding control device 32 that performs an operation of sliding on the body 5. The rubbing device 30 is mounted in a state where the counterweight 23 is placed on the shock absorber 25 as shown in FIG. In general, in an elevator, the mass of the counterweight 23 is greater than the mass of the car 21 that is not loaded. When the elevator is maintained, the car 21 is normally not loaded. Therefore, even when the braking device 7 is opened with the counterweight 23 placed on the shock absorber 25 as described above, the car 21 and the counterweight are maintained. 23 does not move up and down and remains in the state of FIG.

4 is an enlarged view of a main part of the idling member 31, FIG. 5 is a cross-sectional view taken along the line AA in FIG. 4, FIG. 6 is a cross-sectional view taken along the line BB in FIG. It is C sectional drawing. The idling member 31 has a plurality of block members 33. The block member 33 includes a first block member 331 and second and subsequent block members 332.

The first block member 331 is formed in a U-shaped cross section, and covers the first piece 331a and the second piece 331b facing each other, and part of the first piece 331a and the second piece 331b in the width direction. It is comprised by the 3rd piece 331c which connects. A rope groove 33d for engaging the rope 20 is formed on the outer surface of the third piece 331c. In addition, a pressing plate 34 having a rope groove 34 a that engages the rope 20 is attached to the outer surface of the third piece 331 c with bolts 35 so as to sandwich the rope 20. The third piece 331c, the pressing plate 34, and the bolt 35 constitute a suspension means holding member 36 that holds the rope 20.

Moreover, the block member 331 is arrange | positioned so that the outer peripheral part of the drive sheave 4 may be inserted inside the 1st piece 331a and the 2nd piece 331b. Inside the block member 331, a roller 37 is rotatably supported by a first piece 331 a and a second piece 331 b of the block member 331 via a bearing 38. The roller 37 is in contact with the outer peripheral surface of the drive sheave 4. A guide member 39 is rotatably attached to the block member 331 adjacent to the outside of the third piece 331c. The guide member 39 has a rod shape and has a rope groove 39 a that engages with the rope 20.
Further, the first piece 331a and the second piece 331b are provided with screw holes 40 on the drive sheave side. The screw hole 40 is provided to face the roller 37 in the diameter direction of the drive sheave 4 in a state where the roller 37 is in contact with the outer peripheral surface of the drive sheave 4. Further, the screw hole 40 is disposed on a line connecting the rotation center of the drive sheave 4 and the rotation center of the roller 37 as viewed from the rotation axis direction of the drive sheave 4.

The second and subsequent block members 332 are also configured in the same manner as the block member 331, and differences from the block member 331 will be described below. The block member 332 includes a first piece 332a and a second piece 332b that face each other, and a third piece 332c that connects each of the first piece 332a and the second piece 332b in the width direction. 39 is not provided. Other suspension means holding members 36 and rollers 37 are provided in the same manner as the block member 331.

  The idling member 31 includes the plurality of block members 33 as described above, and the block members 33 are connected to each other by the connecting member 41. The connecting member 41 is rotatably supported by the block member 33 by a pin 42 outside the block member 33.

The idling member 31 is configured as described above, and the roller 37 rotates as the drive sheave 4 rotates. At this time, the rope 20 and the block member 33 to which the rope 20 is attached remain stationary. As a result, the car 21 and the counterweight 23 do not move up and down, and the drive sheave 4 and the brake body 5 idle while maintaining the state of FIG.

Next, the mounting of the rubbing apparatus 30 will be described with reference to FIGS.
First, as shown in FIG. 8, the sliding control device 32 is connected to the electric motor 6 and the braking device 7. Next, the brake control device 32 is opened by the sliding control device 32, and the motor 6 is energized to rotate the driving sheave 6 so that the counterweight 23 is raised and lowered from the shock absorber 25 to a predetermined height position. The brake device 7 is braked at the position, and the motor 6 is de-energized and stopped. In this state, the first block member 331 of the idling member 31 is attached to the drive sheave 4.

Here, attachment of the first block member 331 will be described. 9 is an enlarged view of a main part showing a state in which the first block member 331 is attached to the drive sheave 4, FIG. 10 is a DD sectional view of FIG. 9, and FIG. 11 is an EE sectional view of FIG. FIG. The bolt pin 50 which is a block holding member is placed on both sides of the drive sheave 4 so as to face the roller 37 in the diameter direction of the drive sheave 4 with the roller 37 in contact with the outer peripheral surface of the drive sheave 4. It is attached. The bolt pin 50 is fastened to the screw hole 40 of the block member 331 and is fitted into the fitting holes 51 on both sides of the drive sheave 4. The bolt pin 50 and the fitting hole 51 are arranged on a line connecting the rotation center of the drive sheave 4 and the rotation center of the roller 37 when viewed from the rotation axis direction of the drive sheave 4. Further, there is a gap S shown in FIG. 10 between the tip of the bolt pin 50 and the bottom surface of the fitting hole 51, and the gap S restricts the movement of the block member 331 in the left-right direction of FIG. .

As a result, the block member 331 is held by the drive sheave 4. In this state, the driving sheave 4 is rotated in the downward direction of the counterweight 23, that is, in the clockwise direction in the figure, and the rope 20 is engaged with the rope groove 39a of the guide member 39 of the block member 331 as shown in FIG. . At this time, when the rope 20 is engaged with the rope groove 33d, a force acts on the block member 331 in a direction rotating around the bolt pin 50, but the roller 37 and the bolt pin 50 sandwich the outer peripheral surface of the drive sheave 4. Since it is in a state, the block member 33 remains held on the drive sheave 4.

Next, the counterweight 23 is lowered, that is, the drive sheave 4 is rotated in the clockwise direction, and the rope 20 is engaged with the rope groove 33d of the block member 331 while being guided by the guide member 39. . FIG. 12 is a view showing this state, and FIG. 13 is a cross-sectional view taken along the line FF of FIG. At this time, the holding plate 34 is fastened to the block member 331 with the bolts 35 to fix the rope 20 to the block member 331. Further, the drive sheave 4 is rotated, and the roller 37 abuts on the outer peripheral surface of the drive sheave 4 while the rope groove 33 d of the second block member 332 is engaged with the rope 20. At this time, the second block member 332 is not attached to the drive sheave 4 with the bolt 41, and the roller 37 remains in contact with the outer peripheral surface of the drive sheave 4. In a state where the rope 20 is engaged with the rope groove 33d, the holding plate 34 is fastened to the block member 332, and the rope 20 is fixed to the block member 332.

Thereafter, the other block members 332 are similarly attached to the drive sheave 4 in the same manner, the idling member 31 is finally attached in the state shown in FIG. 3, and the counterweight 23 is placed on the shock absorber 25. It becomes. In the initial state shown in FIG. 8, the position at which the counterweight 23 is stopped at a predetermined height from the shock absorber 25 is the same as that shown in FIG. This corresponds to the downward movement amount of the counterweight 23 until the state shown in FIG.
After the idling member 31 is mounted as described above, the bolt pin 50 is removed, and the mounting of the rubbing device 30 is completed.

Next, the operation of sliding the braking pieces 8 with the rubbing device 30 will be described. In the state shown in FIG. 3, the sliding control device 32 energizes the electromagnetic device 15 of the braking device 7 to open the braking piece 8 and energizes the electric motor 6 to rotate the drive sheave 4 and the braking body 5. . And the control apparatus 32 interrupts | blocks electricity supply of the electromagnetic device 15 of the braking device 7 with the braking body 5 rotating, and presses the braking piece 8 against the braking body 5. FIG. As a result, the braking piece 8 is slid onto the braking body 5. After pressing the brake piece 8 against the brake body 5 for a predetermined time, the electromagnetic device 15 is energized again to open the brake piece 8. At this time, the braking body 5 remains rotated. This is repeated at predetermined time intervals to slide the braking pieces 8 together. In this way, the braking pieces 8 are slid together while the car 21 and the counterweight 23 are stationary. The braking body 5 may be rotated in one direction, or may be rotated in both directions and slid.

The first embodiment of the present invention is configured as described above, and has the following effects.
An idling member 31 is mounted between the rope 20 and the driving sheave 4 so that the driving sheave 4 is idled with respect to the rope 20. In this state, the sliding control device 32 presses the braking piece 8 of the braking device 7 against the braking body 5 while rotating the braking body 5. Thereby, the braking body 5 can be rotated and the braking piece 8 can be slid in a state where the rope 20 is not wrapped around the driving sheave 4. Conventionally, the elevator is operated, and the inertia force at that time and the rotation due to the unbalanced torque of the car 21 and the counterweight 23 are braked so that the braking piece 8 slides on the braking body 5. Since the time of braking once is short and the amount of work in rubbing is small, it has been necessary to repeat braking and rotation many times in order to achieve rubbing until the braking torque is stabilized. According to the first embodiment of the present invention, since the brake piece 8 is pressed against and slides against the brake body 5 in a state where the brake body 5 is rotated by the electric motor 6, the one-time sliding time is long. The workload can be increased. Therefore, since the sliding is performed by the few pressing operations of the braking pieces 8, the sliding operation time can be shortened.

Further, conventionally, the car 21 and the counterweight 23 are lifted and lowered, and the sliding work can be performed only until the counterweight 23 is lowered from the upper part and comes into contact with the shock absorber 25. In order to perform the work, it was necessary to raise the counterweight 23 again. According to the first embodiment of the present invention, when the sliding is performed, the car 21 and the counterweight 23 are not raised and lowered, so that the extra work as described above is not necessary. Furthermore, since the time for pressing the braking piece 8 can be arbitrarily set, optimal sliding can be performed.
Further, since the idling member 31 has a suspension means holding member 36 and a roller 37 that rotates in contact with the outer peripheral surface of the drive sheave 4, the drive sheave 4 rotates smoothly while the rope 20 is securely held. The electric motor 6 can be operated efficiently.

The idling member 31 includes a plurality of block members 33, and the block members 33 are rotatably connected to each other by a connecting member 41. Thereby, when the idling member 31 is not used, the crossbones can be wound and the storage property can be improved.
Further, since the guide member 39 engages with the rope 20 so as to be rotatable with respect to the block member 331, the rope 20 is engaged with and guided by the guide member 39 when the idling member 31 is mounted. Even when a relative slip occurs between the rope 20 and the guide member 39 when engaging the groove 33d, such a phenomenon does not occur due to the rotation of the guide member 39. Therefore, the idling member 31 can be mounted without difficulty. Further, the surface of the rope 20 is not damaged.

The bolt pin 50 as a block holding member is attached to both side surfaces of the drive sheave 4 so as to face the roller 37 in the diameter direction of the drive sheave 4 with the roller 37 in contact with the outer peripheral surface of the drive sheave 4. It is done. Thereby, the block member 331 can be held on the drive sheave 4. Further, since the bolt pin 50 is fastened to the screw hole 40 of the block member 331 and is fitted into the fitting holes 51 on both sides of the drive sheave 4, the idling member 31 can be attached to and removed from the drive sheave 4. it can. Further, since this bolt pin 50 is arranged on a line connecting the rotation center of the drive sheave 4 and the rotation center of the roller 37 as viewed from the direction of the rotation axis of the drive sheave 4, the block member 331 is connected to the drive sheave. 4 can be held in a state where it is difficult to swing.

Embodiment 2. FIG.
FIG. 14 is a diagram showing a sliding device for an elevator braking device according to Embodiment 2 of the present invention, and corresponds to FIG. 9 of Embodiment 1. FIG. 15 is a view showing a section GG of FIG. In the second embodiment, the block holding member is changed with respect to the first embodiment.

  In the figure, the bolt pins 70 a and 70 b as block holding members face the roller 37 in the diameter direction of the drive sheave 4 with the roller 37 in contact with the outer peripheral surface of the drive sheave 4. It is attached to both sides of the car 4. Further, the bolt pins 70 a and 70 b are arranged symmetrically with respect to a line connecting the rotation center of the drive sheave 4 and the rotation center of the roller 37 as viewed from the rotation axis direction of the drive sheave 4. Further, the bolt pins 70 a and 70 b are fastened to the screw holes 61 provided on both sides of the block member 60 and are fitted in the fitting holes 71 on both sides of the drive sheave 4. Other parts are the same as those in the first embodiment, and the same reference numerals as those in the first embodiment denote corresponding parts.

  As described above, according to the second embodiment, the block holding member includes a portion where the roller 37 contacts the drive sheave 4 and a portion where the bolt pins 70 a and 70 b fit into the engagement hole 71 of the drive sheave 4. Since the block member 60 is mounted on the drive sheave 4 by so-called three-point support that is supported by the above, the block member 60 can be reliably held on the drive sheave 4.

In each of the embodiments, the drum type braking device 7 that presses the braking piece 8 against the braking body 5 by swinging the arm 10 is shown, but a disc type braking device may be used. Moreover, although the brake device by the electromagnetic device 15 was shown, the brake device by a hydraulic device may be sufficient and it is applied to the brake device which has a brake piece.
Moreover, although each embodiment showed the elevator which provided the hoisting machine 1 and the control apparatus 24 in the machine room 2, it applies to what is called a machine room less elevator in which the hoisting machine and the control apparatus were installed in the hoistway. Alternatively, the present invention is applied to an elevator to which a hoisting machine having a driving sheave wound around a suspension means for suspending a car is applied, that is, a so-called traction type elevator.
The sliding control device 32 performs energization of the electric motor 6 and energization of the electromagnetic device 15 of the braking device 7 to perform the sliding of the braking piece 8. However, the function is replaced with the elevator control device 24. Also good.

BRIEF DESCRIPTION OF THE DRAWINGS The elevator hoistway longitudinal cross section applied to the braking apparatus of the braking device in Embodiment 1 of this invention is shown. It is an enlarged view which shows the elevator hoisting machine of FIG. 1 shows a state in which a braking device for a braking device according to Embodiment 1 of the present invention is mounted. It is a principal part enlarged view of the idling member of the sliding device of the braking device in Embodiment 1 of this invention. It is AA sectional drawing of FIG. It is BB sectional drawing of FIG. It is CC sectional drawing of FIG. It is a figure explaining mounting | wearing with the braking device of the braking device in Embodiment 1 of this invention. FIG. 9 is an enlarged view showing a state in which the first block member in FIG. 8 is attached to a drive sheave. It is DD sectional drawing of FIG. It is EE sectional drawing of FIG. The state which rotated the drive sheave further from the state of FIG. 8 is shown. It is FF sectional drawing of FIG. 1 shows a braking device for a braking device according to Embodiment 2 of the present invention. It is GG sectional drawing of FIG.

Explanation of symbols

1 hoisting machine 3 rotating shaft 4 drive sheave 5 brake body
6 Electric motor, 7 Braking device, 8 Braking piece, 15 Electromagnetic device,
20 ropes, 21 passenger cars, 23 counterweights, 24 control devices,
25 shock absorber 30 rubbing device, 31 idling member, 32 rubbing control device,
33 block member, 34 presser plate, 35 bolt,
36 Suspension means holding member, 37 roller, 39 guide member 40 screw hole, 41 connecting member, 50 bolt pin, 51 fitting hole 60 block member, 70a, 70b bolt pin

Claims (7)

A driving sheave wound around a suspension means for suspending a car, and a driving sheave provided in a hoisting machine that drives the driving sheave and pressing a braking piece against a braking body that rotates together with the driving sheave A braking device for braking the rotation of the brake device,
The suspension means is detachably mounted between the suspension means and the driving sheave, and the idling member that idles the driving sheave with respect to the suspension means, and the brake body is rotated with the idling member attached. A sliding control device for pressing the braking piece against the braking body and sliding the braking piece;
An elevator braking device, comprising: an elevator braking device. The idling member includes a suspension means holding member that holds the suspension means, a roller that rotates in contact with an outer peripheral surface of the drive sheave,
The sliding device for an elevator braking device according to claim 1, comprising: The idler member includes a plurality of block members having the suspension means holding member and the roller, a connecting member rotatably attached to the block member, and connecting the block members to each other;
The elevator braking apparatus according to claim 1 or 2, further comprising: A guide member rotatably attached to the block member, disposed adjacent to the suspension means holding member and engaged with the suspension means, and a block holding member held by the drive sheave;
The sliding device for an elevator braking device according to claim 3. The block holding member is provided on both sides of the drive sheave so that the roller abuts the outer peripheral surface of the drive sheave and faces the roller in the diameter direction of the drive sheave. The sliding device for an elevator braking device according to claim 4, wherein the sliding device is composed of a simple bolt pin. The said bolt pin is arrange | positioned on the line | wire which connected the rotation center of the said drive sheave, and the rotation center of the said roller seeing from the rotating shaft direction of the said drive sheave. Elevator braking device sliding device. The bolt pins are arranged symmetrically with respect to a line connecting the rotation center of the drive sheave and the rotation center of the roller as viewed from the rotation axis direction of the drive sheave. The sliding device of the elevator braking device according to claim 5.

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