JP2011131999A - Elevator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an elevator capable of smoothly guiding a torque arm by a simple structure. <P>SOLUTION: The elevator includes a base 17, a hoisting machine 16 fixed onto the base 17 and having a rotary shaft 26, a brake device 21 attached to the rotary shaft 26, the torque arm 23 having one end 23A fixed to the brake device 21 and another end 23B in a side opposite of the one end 23A, and stoppers 24 provided on the base 17 and disposed as a pair in a direction in parallel with a moving direction of the torque arm 23 moving around the rotary shaft 26 in both sides of the torque arm 23. The other end 23B faces the base at an interval 36. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an elevator in which a brake device is attached to a rotating shaft of a hoisting machine.

  An elevator having an emergency brake attached to a hoist is disclosed. The elevator includes a hoisting machine having an output shaft, an output shaft extension provided extending from the output shaft, a brake device provided on the output shaft extension, a magnet assembly for operating the brake device, and a magnet assembly And a torque arm to which a solid body is attached. The torque arm has a rectangular opening at a portion connected to the bed plate. Inside this opening, a pin fixed on the bed plate side is passed, and restrains the rotation of the torque arm.

  The lower end of the torque arm moves within a limited range with respect to the bed plate. As a result, normal swinging of the output shaft extension is allowed (see, for example, Patent Document 1).

Japanese Patent No. 3422809

  By the way, loads such as a car, a balance weight, a rope, and a load act on the hoisting machine and its sheave. Therefore, the sheave position is slightly displaced downward by elastic deformation of the hoisting machine. As a result, the positions of the brake device and the torque arm are also displaced, so the torque arm needs to restrain the rotation of the brake device while following the displacement. However, the conventional elevator has a complicated structure and a large number of parts, and there is still room for improvement.

  An object of the present invention is to provide an elevator that can smoothly guide a torque arm with a simple structure.

  To achieve the above object, an elevator according to one aspect of the present invention includes a base, a hoisting machine fixed on the base and having a rotating shaft, a brake device attached to the rotating shaft, and the brake A torque arm having one end fixed to the device and the other end opposite to the one end; and both sides provided on the base and sandwiching the torque arm therebetween, And a pair of stoppers arranged in a direction along the moving direction of the torque arm that moves around the rotation axis, and the other end faces the base with a gap.

  According to said structure, the elevator which can guide a torque arm smoothly with a simple structure can be provided.

The schematic diagram which shows the whole structure of the elevator which concerns on 1st Embodiment. Sectional drawing which expanded and showed the elevator hoist and brake device shown in FIG. The front view which showed the brake device, torque arm, and stopper shown in FIG. The front view which showed the brake device, torque arm, stopper, and clearance gap adjustment mechanism of the elevator which concern on 2nd Embodiment. The front view which showed the brake device, torque arm, and stopper of the elevator which concern on 3rd Embodiment. The front view which showed the brake device of the elevator which concerns on 4th Embodiment, a torque arm, a stopper, and an elastic body. The front view which showed the brake device, torque arm, and stopper of the elevator which concern on 5th Embodiment. The front view which showed the brake device, torque arm, and stopper of the elevator which concern on 6th Embodiment. The front view which showed the brake device of the elevator which concerns on 7th Embodiment, a torque arm, a stopper, and a clearance gap adjustment mechanism.

  Hereinafter, a first embodiment of an elevator will be described with reference to FIGS. 1 to 3.

  As shown in FIGS. 1 to 3, the elevator 11 according to the first embodiment includes a hoistway 12, a passenger car 13 that moves up and down in the hoistway 12, and a machine room 14 provided above the hoistway 12. A main rope 15 fixed to the car at one end, a hoisting machine 16 around which the main rope 15 is wound via a sheave 25, a base 17 supporting the hoisting machine 16, and the other end of the main rope 15. The fixed counterweight 18, the sheave 25 and brake device 21 attached to the rotating shaft 26 of the hoisting machine 16, the bearing 22 interposed between the hoisting machine 16 and the brake device 21, and the brake device 21 A torque arm 23 to be attached and a stopper 24 for restricting movement of the torque arm 23 are provided.

  The elevator 11 has a deflection sheave 28 provided adjacent to the hoisting machine 16, a main rail that guides the raising and lowering of the car 13, a counter rail that guides the raising and lowering of the counterweight 18, and a control signal to the car 13. And a tail cord for supplying electric power, a compensating rope for connecting the car 13 and the counterweight 18, and the like. The elevator 11 includes a car buffer and a counterweight buffer (not shown) provided at the bottom of the hoistway. The main rope 15 is directly wound around the sheave 25.

  As shown in FIG. 2, the hoist 16 includes a rotating shaft 26 that rotatably supports the sheave 25 and a motor 27 that rotates the rotating shaft 26. The rotation shaft 26 includes a rotation shaft extension 26 </ b> A that protrudes toward the brake device 21.

  The brake device 21 is a so-called emergency brake device that operates when the car 13 is stopped in an emergency. The brake device 21 includes, for example, a brake disc 31 attached to the rotary shaft extension 26A via a spline structure, a casing 32 surrounding the brake disc 31, a spring 33 and a solenoid 34 embedded in the casing 32, have. The solenoid 34 is excited in a state where the current is turned on, and opens the brake disk 31. When the current is turned off, the brake disc 31 is pressed against the brake pad 35 by the urging force of the spring 33 and the brake is applied.

  As shown in FIGS. 2 and 3, the torque arm 23 has a substantially rectangular flat plate shape. The torque arm 23 has one end portion 23A fixed to the brake device 21 and the other end portion 23B opposite to the one end portion 23A. The other end 23B faces the base 17 with a gap 36 therebetween. Thus, even when the position of the brake device 21 changes following the bending of the rotating shaft 26, the torque arm 23 is prevented from colliding with the base 17, and the torque arm 23 is prevented from bending due to this collision. .

  The stoppers 24 are provided as a pair on the both sides of the torque arm 23 on the base 17. Each stopper 24 is arranged side by side in a direction along the moving direction of the torque arm 23 that moves around the rotation shaft 26. Each stopper 24 is in the form of a square piece. The stopper 24 can prevent the rotation of the brake device 21 that rotates with the rotation shaft 26 when the brake is operated by restraining the torque arm 23 that is about to move around the rotation shaft 26. The stopper 24 is fixed to the base 17 by welding or screwing. Moreover, the clearance gap between the torque arm 23 and the stopper 24 is suitably set, for example in the range of 0.1 mm to 0.5 mm.

  According to the first embodiment, the elevator 11 includes a base 17, a hoisting machine 16 that is fixed on the base 17 and has a rotary shaft 26, a brake device 21 that is attached to the rotary shaft 26, and a brake device 21. A torque arm 23 having one end 23A fixed to the other end and the other end 23B opposite to the one end 23A, and both sides provided on the base 17 and sandwiching the torque arm 23 therebetween And a pair of stoppers 24 arranged in the direction along the moving direction of the torque arm 23 that moves around the rotation shaft 26, and the other end 23 B faces the base 17 with a gap 36 therebetween. To do.

  According to this configuration, since the gap 36 is provided between the other end 23B and the base 17, even when the brake device 21 moves following the bending of the rotating shaft 26, the torque arm 23, the brake The torque arm 23 can be smoothly guided without concentrating the load on the device 21 and the bearing 22, and the brake torque can be appropriately generated in the brake device 21. Thereby, the reliability of the brake device 21 can be further improved.

  Next, a second embodiment of the elevator 11 will be described with reference to FIG. The elevator 11 of the second embodiment is different from that of the first embodiment in that it has a gap adjusting mechanism 41, but the other parts are common to the first embodiment. For this reason, mainly different parts will be described, and common parts will be denoted by common reference numerals and description thereof will be omitted. The elevator 11 of the second embodiment has the same configuration as the elevator shown in FIG.

  The elevator 11 according to the second embodiment is fixed to the elevator 13, a passenger car 13 that moves up and down in the elevator 12, a machine room 14 provided above the elevator 12, and one end of the elevator 11. The main rope 15, the hoisting machine 16 around which the main rope 15 is wound, the base 17 that supports the hoisting machine 16, the counterweight 18 fixed to the other end of the main rope 15, and the hoisting machine 16 Brake device 21, a bearing 22 interposed between the hoist 16 and the brake device 21, a torque arm 23 attached to the brake device 21, a stopper 24 for restricting the movement of the torque arm 23, and a torque arm 23 and a gap adjusting mechanism 41 provided between the stopper 24 and the stopper 24.

  As shown in FIG. 4, the gap adjusting mechanism 41 is constituted by a through bolt 42 provided so as to penetrate the stopper 24. By rotating the through bolt 42 in the forward and reverse direction, the dimension of the gap between the torque arm 23 and the stopper 24 can be adjusted appropriately. The clearance between the torque arm 23 and the stopper 24 is appropriately set by the clearance adjustment mechanism 41 within a range of, for example, 0.1 mm to 0.5 mm.

  According to the second embodiment, the elevator 11 includes the gap adjusting mechanism 41 for adjusting the gap between the torque arm 23 and the stopper 24. According to this configuration, even if the processing accuracy of the stopper 24 and the torque arm 23 is lowered, the gap between the torque arm 23 and the stopper 24 can be easily adjusted. Therefore, the manufacturing cost of the stopper 24 and the torque arm 23 can be reduced, and the positioning accuracy when the stopper 24 is fixed to the base 17 can be relaxed. Thereby, workability at the time of fixing the stopper 24 can be improved.

  Next, a third embodiment of the elevator will be described with reference to FIG. The elevator 11 of the third embodiment differs from that of the first embodiment in that the size of the gap between the torque arm 23 and the stopper 24 is different, but the other parts are the first embodiment. And in common. For this reason, mainly different parts will be described, and common parts will be denoted by common reference numerals and description thereof will be omitted. The elevator 11 of the third embodiment has the same configuration as the elevator 11 shown in FIG.

  In the third embodiment, as shown in FIG. 5, a gap 51 is provided between the torque arm 23 and the stopper 24. Normally, when a weight imbalance occurs between the car 13 and the counterweight 18, the torque arm 23 moves minutely around the rotation shaft 26, but the size of the gap 51 is such that the torque arm 23 moves slightly. Designed to allow. Since the size of the gap 51 varies depending on the radius of the sheave 25 and the length of the torque arm 23, it cannot be generally stated. For example, the radius of the sheave 25 is about 330 mm, and the length of the torque arm 23 is 150 mm. For example, it is preferable to set within a range of 0.1 mm to 1 mm.

  The minute movement of the torque arm 23 will be described in more detail. When the car 13 is stationary at a position facing the landing, the rotation of the rotary shaft 26 is blocked by the second brake device provided in the hoisting machine 16. The second brake device is used, for example, for safely stopping the car 13 in a normal use state.

  In the stop state in which the car 13 is stopped, the second gear to which the braking force from the second brake device is transmitted meshes with the first gear formed around the rotation shaft 26. Yes. However, even in this stopped state, the rotating shaft 26 and the sheave 25 can rotate by an angle corresponding to the backlash between the two gears. Moreover, in a stop state, a passenger gets on the car 13 from the landing, and a passenger gets off from the car 13 to the landing. At this time, a weight imbalance occurs between the car 13 and the counterweight 18. As a result, the sheave 25 and the rotating shaft 26 are rotated by a minute angle, and the brake device 21 and the torque arm 23 are moved by a minute distance along with the rotation. The accompanying rotation of the brake device 21 and the torque arm 23 occurs to some extent even when the brake device 21 is opened. Therefore, as described above, the gap 51 between the torque arm 23 and the stopper 24 may be set so as to allow a slight movement of the torque arm 23.

  According to the third embodiment, the width of the gap 51 between the torque arm 23 and the stopper 24 is the same as that of the rotary shaft 26 due to the weight imbalance generated between the car 13 and the counterweight 18. It is a width dimension that allows the movement of the torque arm 23 that moves slightly. According to this configuration, the minute movement of the torque arm 23 due to the gear backlash can be allowed, and the generation of noise and vibration due to the minute movement of the torque arm 23 can be prevented as much as possible.

  Next, a fourth embodiment of the elevator will be described with reference to FIG. The elevator 11 of the fourth embodiment differs from that of the third embodiment in that an elastic body 52 is provided, but the other parts are common to the third embodiment. For this reason, mainly different parts will be described, and common parts will be denoted by common reference numerals and description thereof will be omitted. The elevator 11 of the fourth embodiment has the same configuration as the elevator 11 shown in FIG.

  In the fourth embodiment, the dimension of the gap 51 between the torque arm 23 and the stopper 24 is the same as that of the third embodiment in that it is designed to allow a slight movement of the torque arm 23. The elevator 11 of the fourth embodiment further includes, for example, a rubber-like elastic body 52 at the position of the gap 51 between the torque arm 23 and the stopper 24.

  According to the elevator of the fourth embodiment, the shock when the brake device 21 is operated and the torque arm 23 and the stopper 24 come into contact can be mitigated by the buffer effect of the elastic body 52. As a result, when the brake device 21 is actuated or when the torque arm 23 slightly moves due to gear backlash, it is possible to prevent the occurrence of noise and vibration as much as possible.

  A fifth embodiment of the elevator will be described with reference to FIG. The elevator 11 of the fifth embodiment is different from that of the third embodiment in that a roller 53 is provided on the stopper 24, but the other parts are the same as those of the third embodiment. For this reason, mainly different parts will be described, and common parts will be denoted by common reference numerals and description thereof will be omitted. The elevator 11 of the fifth embodiment has the same configuration as the elevator 11 shown in FIG.

  In the fifth embodiment, the dimension of the gap 51 between the torque arm 23 and the stopper 24 is the same as that of the third embodiment in that it is designed to allow a minute movement of the torque arm 23. As shown in FIG. 7, the stopper 24 of the fifth embodiment includes a stopper main body 54 and a roller 53 that can freely rotate with respect to the stopper main body 54. The roller 53 can guide the movement of the torque arm 23 that approaches or moves away from the base 17 due to the bending of the rotating shaft 26 of the hoist 16.

  According to the fifth embodiment, since the movement of the torque arm 23 in the vertical direction can be smoothly guided by the action of the roller 53, the reliability of the stopper 24 can be improved. Thereby, the brake torque can be appropriately generated in the brake device 21, and the reliability of the brake device 21 can be improved.

  A sixth embodiment of the elevator will be described with reference to FIG. The elevator 11 of the sixth embodiment is different from that of the first embodiment in that the number of stoppers 24 is one, and the groove 61 is provided in the torque arm 23. Common to the embodiment. For this reason, mainly different parts will be described, and common parts will be denoted by common reference numerals and description thereof will be omitted. The elevator 11 of the sixth embodiment has the same configuration as the elevator 11 shown in FIG.

  In the elevator 11 according to the sixth embodiment, the torque arm 23 has a substantially rectangular flat plate shape. The torque arm 23 has one end portion 23A fixed to the brake device 21, the other end portion 23B opposite to the one end portion 23A, and the other end portion 23B toward the one end portion 23A. And an extended groove 61. The groove 61 has a substantially square shape, and extends substantially along the center line of the torque arm 23 from the other end 23B to the middle of the one end 23A. A gap 36 is provided between the other end 23 </ b> B and the base 17.

  Only one stopper 24 is provided so as to fit inside the groove 61 of the torque arm 23. The stopper 24 has a rectangular small piece shape. The stopper 24 is fixed to the base 17 by welding or screwing. The gap between the groove 61 of the torque arm 23 and the stopper 24 is appropriately set within a range of 0.1 mm to 0.5 mm, for example.

  According to the sixth embodiment, since the gap 36 is provided between the other end 23B of the torque arm 23 and the base 17, the brake device 21 moves following the bending of the rotary shaft 26. However, the load is not concentrated on the torque arm 23 and the brake device 21, and the brake device 21 can appropriately generate the brake torque. Further, it is only necessary to form the groove 61 in the torque arm 23, and it is easy to process and a highly accurate guide structure can be configured.

  With reference to FIG. 9, a seventh embodiment of an elevator will be described. The elevator 11 of the seventh embodiment is different from that of the sixth embodiment in that it has a gap adjusting mechanism 41, but the other parts are common to the sixth embodiment. For this reason, mainly different parts will be described, and common parts will be denoted by common reference numerals and description thereof will be omitted. The elevator 11 of the seventh embodiment has the same configuration as the elevator 11 shown in FIG.

  The elevator 11 according to the seventh embodiment is fixed to the elevator 13, the elevator 13 that moves up and down in the elevator 12, the machine room 14 provided above the elevator 12, and the elevator 13 at one end. The main rope 15, the hoisting machine 16 around which the main rope 15 is wound, the base 17 that supports the hoisting machine 16, the counterweight 18 fixed to the other end of the main rope 15, and the hoisting machine 16 Brake device 21, a bearing 22 interposed between the hoist 16 and the brake device 21, a torque arm 23 attached to the brake device 21, a stopper 24 for restricting the movement of the torque arm 23, and a torque arm 23 and a gap adjusting mechanism 41 provided between the stopper 24 and the stopper 24.

  The gap adjusting mechanism 41 is constituted by a through bolt 42 provided so as to penetrate the stopper 24. By rotating the through bolt 42 in the forward / reverse direction, the gap between the torque arm 23 and the stopper 24 can be adjusted as appropriate. The gap dimension between the groove 61 of the torque arm 23 and the stopper 24 is appropriately set by the gap adjustment mechanism 41 within a range of, for example, 0.1 mm to 0.5 mm.

  According to the seventh embodiment, even if the processing accuracy of the groove portion 61 of the stopper 24 and the torque arm 23 is lowered, the gap between the stopper 24 and the groove portion 61 of the torque arm 23 can be easily adjusted. Therefore, the manufacturing cost of the stopper 24 and the torque arm 23 can be reduced, and the positioning accuracy when the stopper 24 is fixed to the base 17 can be relaxed. Thereby, workability at the time of fixing the stopper 24 can be improved.

  The elevator 11 of the present invention is not limited to the above embodiment. That is, in each said embodiment, although the case where the brake device 21 was used as an emergency brake was demonstrated to the example, it is not limited to this, The brake device 21 is used as a brake used daily. Also good. Of course, various modifications can be made without departing from the scope of the invention.

DESCRIPTION OF SYMBOLS 11 ... Elevator, 15 ... Main rope, 16 ... Hoisting machine, 17 ... Base, 18 ... Balance weight, 21 ... Brake device, 23 ... Torque arm, 23A ... One end, 23B ... Other end, 24 ... Stopper, 25 ... Sheave, 26 ... Rotating shaft, 36 ... Gap, 41 ... Gap adjustment mechanism, 51 ... Gap, 52 ... Elastic body, 53 ... Roller, 61 ... Groove

Claims (7)

Base and
A hoisting machine fixed on the base and having a rotating shaft;
A brake device attached to the rotating shaft;
A torque arm having one end fixed to the brake device and the other end opposite to the one end;
A stopper provided on the base and disposed in a pair along the direction of movement of the torque arm that moves around the rotation axis on both sides of the torque arm therebetween,
Comprising
2. The elevator according to claim 1, wherein the other end faces the base with a gap. The car,
Balance weight,
A main rope connecting the ride car and the counterweight;
A sheave fixed to the rotating shaft and wound around the main rope;
Comprising
The width of the gap between the torque arm and the stopper allows the movement of the torque arm that moves minutely with the rotating shaft due to the weight imbalance that occurs between the car and the counterweight. The elevator according to claim 1, wherein the elevator has a width dimension.   The elevator according to claim 2, further comprising an elastic body provided in a gap between the torque arm and the stopper.   The elevator according to claim 2, wherein the stopper includes a roller that guides a torque arm that approaches or moves away from the base.   The elevator according to claim 1, further comprising a clearance adjustment mechanism for adjusting a clearance between the torque arm and the stopper. Base and
A hoisting machine fixed on the base and having a rotating shaft;
A brake device attached to the rotating shaft;
One end fixed to the brake device, the other end opposite to the one end, and a groove extending from the other end toward the one end A torque arm;
A stopper that is provided on the base and fits inside the groove;
Comprising
2. The elevator according to claim 1, wherein the other end faces the base with a gap.   The elevator according to claim 6, further comprising a gap adjusting mechanism for adjusting a gap between the groove and the stopper.

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