JP4986428B2 - Elevator governor - Google Patents

Description

  The present invention relates to an elevator governor, which can be formed particularly compactly, and can be used to diversify the overall layout when installed in a limited space such as a machine room-less elevator. It relates to a thin governor.

First, a conventional elevator governor 30 will be described with reference to FIGS. As shown in FIGS. 8 and 9, the conventional elevator governor 30 is configured such that the governor rope 6 is wound around. Such a speed governor 30 is provided to extend between a base 1 having a pair of side plates 1a, 1a facing each other and a pair of side plates 1a, 1a of the base 1, and a bearing is provided on each side plate 1a, 1a. The rotary shaft 3 is rotatably supported via the section 40, and the governor sheave 2 is fixed to the rotary shaft 3 and is rotatable according to the operation of the governor rope 6 wound around. . Further, a flyweight 8 having an operating claw 13 is provided on the side of the governor sheave 2, and can be engaged with the operating claw 13 of the flyweight 8 between the side plate 1 a of the base 1 and the governor sheave 2. A ratchet portion 12 is provided coaxially with the governor sheave 2. Among these, each bearing part 40 is arrange | positioned at the external side of the base 1 (refer patent document 1).
Japanese Patent Laid-Open No. 06-001561

  8 and 9, the bearing 40 that supports the governor sheave 2 is provided on the outer side of the base 1, and the ratchet 12 is provided on the inner side of the base 1. Then, the width of the governor 30 is increased, the shape of the governor 30 is increased, and when the governor 30 is disposed in a limited space such as a machine room-less elevator, the overall layout is It will be limited.

  The present invention has been made in consideration of such points, and the overall layout can be varied even in a limited space such as a machine room-less elevator with a compact shape. An object is to provide a thin elevator governor.

The present invention relates to an elevator governor on which a governor rope is wound, a base having a pair of opposing side plates, and extending between a pair of side plates of the base, and a bearing portion on each side plate. A rotating shaft supported rotatably via a rotating shaft, a governor sheave fixed to the rotating shaft and rotatable according to the operation of the wound governor rope, and provided on one side of the governor sheave And provided with a ratchet portion that is rotatable with respect to the bearing portion and engageable with the operating pawl of the flyweight. And the ratchet portion is disposed on the inner side of the corresponding side plate without projecting axially outward from the side plate, and the other bearing portion is disposed on the inner side of the corresponding side plate without projecting axially outward from the side plate. are arranged, which with one Bearing unit and the other bearing part of a speed governor for an elevator, characterized by being sandwiched by a pair of side plates.

  The present invention is the elevator governor characterized in that the bearing portion includes a bearing that supports the rotating shaft and a bearing box that is disposed outside the bearing.

  The present invention is the elevator governor characterized in that the bearing portion has a protrusion that restricts the movement of the ratchet portion toward the inner periphery.

  The present invention is the elevator governor characterized in that the ratchet portion includes a ratchet receiver slidably provided on the outer periphery of the bearing portion and a ratchet fixed to the ratchet receiver.

  The present invention is the governor of an elevator, wherein the ratchet receiver has a regulating portion that regulates the movement of the ratchet toward the inner peripheral side.

  The present invention provides a governor for an elevator, characterized in that movement of the ratchet in the direction of the rotation axis of the ratchet is restricted by providing a C-ring that abuts the ratchet from the side on the outer periphery of the ratchet.

According to the present invention, a ratchet and a ratchet receiver are provided with a first groove and a second groove, respectively, and the ratchet having the first groove and the ratchet receiver having the second groove are fitted to each other. It is the elevator governor characterized by restrict | limiting the movement to the rotating shaft direction.

  According to the present invention, a compact speed governor having a thin shape can be provided, and when the speed governor is installed in a limited space such as a machine room-less elevator, the entire layout can be varied. Can be made.

First Embodiment Hereinafter, a first embodiment of an elevator governor 30 according to the present invention will be described with reference to the drawings. Here, FIG. 1 thru | or FIG. 6 is a figure which shows the 1st Embodiment of this invention.

  First, the overall structure of the elevator will be described with reference to FIG. As shown in FIG. 1, an elevator car 24 is disposed in a hoistway 50 so as to be movable in the vertical direction, and an elevator governor 30 is disposed above the hoistway 50. The governor 30 has a governor sheave 2 as will be described later, and a governor rope 6 is wound around the governor sheave 2. The governor rope 6 is provided below the hoistway 50. The lower sheave 23 is wound around. An elevator car 24 is raised and lowered in the hoistway 50, and an emergency stop device 25 is provided below the car 24. A safety link 26 is provided on the side of the car 24, and the governor rope 6 is connected to the emergency stop device 25 via the safety link 26. Further, a sheave 28 is provided above the car 24, and the main rope 22 is wound around the sheave 28. The main rope is driven by a hoisting machine (not shown), so that the car 24 moves up and down in the hoistway 50.

  Next, the elevator governor 30 will be described in detail with reference to FIGS.

  As shown in FIG. 2, the governor 30 is provided to extend between a base 1 having a pair of side plates 1a and 1a facing each other and a pair of side plates 1a and 1a of the base 1, and each side plate 1a. A rotating shaft 3 rotatably supported by a bearing portion 40 on 1a, and a governor sheave 2 fixed to the rotating shaft 3 and rotatable according to the operation of the governor rope 6 wound around the rotating shaft 3. It has.

  As shown in FIG. 2, each bearing part 40 is arrange | positioned inside a pair of side plate 1a, 1a, the bearing 5 which supports the rotating shaft 3, and the bearing box 4 arrange | positioned on the outer side of this bearing 5; It is composed of A protruding portion 4 a that protrudes in a direction perpendicular to the rotation shaft 3 is provided on the inner peripheral side of each bearing housing 4. This protrusion 4a restricts the movement of the ratchet portion 12 described later in the direction of the rotation axis 3.

  As shown in FIGS. 2 and 4, a ratchet portion 12 that is rotatable with respect to the bearing portion 40 is provided on the outer periphery of one bearing portion 40. The ratchet portion 12 includes a ratchet receiver 12c slidably provided in the circumferential direction on the outer periphery of the bearing portion 40, and a ratchet 12a fixed to the ratchet receiver 12c. The ratchet 12a is provided with teeth 31. ing.

  Here, as shown in FIGS. 2 and 4, a circumferential recess 12 d that houses the ratchet 12 a is provided on the outer periphery of the ratchet receiver 12 c. A restricting portion 12g for restricting the movement of the ratchet 12a in the direction of the rotation axis 3 is provided on the left side (inner peripheral side) of the circumferential recess 12d in FIG. 5, and the circumferential recess 12d is further provided on the right side of FIG. A C-ring 12b that contacts the ratchet 12a from the side and fixes the ratchet 12a is fitted. Further, a notch 32 for fitting the protruding portion 4a of the bearing housing 4 is provided on the inner peripheral surface of the ratchet receiver 12c.

  Further, as shown in FIGS. 3 and 4, the base 1 has an SW 33 that shuts off the power source of a driving device (not shown) and stops the car 24 by a braking device (not shown) of the driving device. An SW lever 34 that drives the SW 33 is rotatably provided on the SW 33.

  Here, FIG. 3 is a side view seen from the III direction of FIG. 2, and FIG. 4 is a side view seen from the IV direction of FIG.

  As shown in FIGS. 3 and 6 (a) and 6 (b), a pair of flyweights 8a and 8b are attached to one side surface of the governor sheave 2 via pins 51a and 51b. , 8b are connected by a link 9. 4 and 6A and 6B, the ratchet portion 12 is provided on the side opposite to the flyweights 8a and 8b of the governor sheave 2. As shown in FIGS. 3 to 6 (a) and 6 (b), the operating pawl 13 and the SW cam 35 are connected to the flyweights 8a and 8b. The operating claw 13 and the SW cam 35 are connected to the flyweights 8a and 8b via a connecting member (not shown) extending through the governor sheave 2, and the operating claw 13 and the SW cam 35 are connected to the governor. The sheave 2 is disposed on the side opposite to the flyweights 8a and 8b, that is, on the ratchet portion 12 side. Here, FIG.6 (b) is sectional drawing which looked at the VI-VI cross section of Fig.6 (a) from upper direction.

As shown in FIG. 6 (a), the flyweight 8a, the 8b has governor sheave 2 rotates, the pin 51a by the centrifugal force, will be rotated in the arrow F ₁ mainly 51b, FIG. 3 and FIG. 6 as shown in (a) (b), between the end 8c and governor sheave 2 flyweights 8a, against the centrifugal force, flyweights to the side opposite to the direction of arrow F ₁ A balance spring 10 is provided for biasing 8a and 8b.

  Further, as shown in FIG. 4, the base 1 is provided with an arm 18 attached so as to be rotatable around a pin 36, and the shoe 14 is provided on the arm 18 so as to be rotatable around a pin 37. ing. This shoe 14 presses the governor rope 6 against the governor sheave 2.

  As shown in FIG. 4, a control rod 19 is connected to the ratchet portion 12, and a spring receiving member 17 is provided at the end of the control rod 19. A rope gripping spring 15 for pressing the governor rope 6 against the governor sheave 2 by the shoe 14 is provided on the outer periphery of the spring receiving member 17. Further, the control rod 19 and the arm 18 are connected so as to be substantially perpendicular to each other.

  Next, the operation of the present embodiment having such a configuration will be described.

  First, the operation of the elevator system provided with the governor 30 will be described with reference to FIGS.

As shown in FIG. 1, the governor rope 6 moves as the car 24 moves up and down, and the governor sheave 2 of the governor 30 around which the governor rope 6 is wound rotates. At this time, as shown in FIG. 6A, the flyweights 8 a and 8 b rotate together with the governor sheave 2 and receive centrifugal force by the rotation of the governor sheave 2. When the speed of the car 24 becomes equal to or higher than a predetermined value, the governor sheave 2 resists the elastic force of the balance spring 10 by the centrifugal force generated by the rotation of the governor sheave 2 as shown in FIG. pin 51a, begins to rotate in the arrow _{F 1} about the 51b against. At this time, the flyweights 8 a and 8 b are rotated in synchronization with each other by the link 9.

  Further, when the speed of the car 24 is increased to the first overspeed (about 1.3 times the normal rated speed), the flyweights 8a and 8b are further increased by the centrifugal force due to the rotation of the governor sheave 2 as described above. The SW cam 35 attached to the flyweights 8a and 8b contacts the SW lever 34 and rotates the SW lever 34 (see FIGS. 3 and 4).

  When the SW lever 34 rotates in this manner, the SW 33 is activated, the power source of the driving device (not shown) is shut off, and a force that stops the car 24 by the braking device (not shown) of the driving device works. .

  However, if the car 24 does not stop even when the SW 33 is activated and the brake device of the driving device is activated, such as when the main rope 22 is broken, the car 24 continues to descend without stopping, and the car 24 The descent speed of will accelerate. When the descending speed of the car 24 reaches the second overspeed (about 1.4 times the normal rated speed), the flyweights 8a and 8b are caused by the centrifugal force generated by the rotation of the governor sheave 2 as described above. Is further rotated (see FIG. 6A), and the operating claws 13 provided on the flyweights 8a and 8b are engaged with the teeth 31 of the ratchet 12 (see FIG. 4).

  As a result, the ratchet 12 rotates together with the governor sheave 2, and the control rod 19 and the spring receiving member 17 provided at the end of the control rod 19 are pulled in the rotation direction of the ratchet 12. As a result, the rope gripping spring 15 is compressed, and the repulsive force of the rope gripping spring 15 causes the arm 18 to rotate around the pin 36, and the shoe 14 provided on the arm 18 regulates the governor rope 6. Press against the machine sheave 2 and press the governor rope 6 to stop the movement of the governor rope 6 (see FIG. 4). When the movement of the governor rope 6 is stopped in this way, the safety link 26 connected to the governor rope 6 and provided on the side of the car 24 is pulled upward. As the safety link 26 is pulled upward in this way, the emergency stop device 25 provided below the car 24 is operated to stop the lowering of the car 24 (see FIG. 1).

  2 to 4, the pair of bearing portions 40 of the speed governor 30 are provided inside the side plate 1 a of the base 1, and the ratchet portion 12 is provided on the outer periphery of one bearing portion 40. . On the other hand, the bearing portion 40 and the ratchet portion 12 are not provided outside the side plate 1 a of the base 1. For this reason, the speed governor 30 can be formed thin and compact as a whole, and even when the speed governor 30 is installed in a limited space such as a machine room-less elevator, the speed governor 30 is connected to the hoistway. 40 can be arranged at predetermined positions, and the entire layout can be varied.

  As shown in FIGS. 2 and 5, the bearing housing 4 of the bearing portion 40 is provided with a protruding portion 4 a that protrudes in a direction perpendicular to the rotating shaft 3, and the inner side of the ratchet receiver 12 c of the ratchet portion 12 (bearing) On the side of the box 4, a notch 32 for fitting the protruding portion 4 a is provided. For this reason, the ratchet receiver 12c of the ratchet part 12 can be prevented from moving in the direction of the governor sheave 2 along the rotation shaft 3, and the ratchet part 12 can be provided stably.

  As shown in FIGS. 2 and 5, the ratchet 12a is sandwiched between a restricting portion 12g provided in the circumferential recess 12d of the ratchet receiver 12c and a C-ring 12b provided on the outer periphery of the ratchet receiver 12c. Is provided. For this reason, since the ratchet 12a can be stably provided on the ratchet receiver 12c, it is possible to prevent the ratchet 12a from running out and causing malfunction. Further, since it is not necessary to fix the ratchet 12a to the ratchet receiver 12c by using a punch or the like, it is possible to prevent the inner diameter of the ratchet receiver 12c from being distorted by stamping.

Second Embodiment Next, a second embodiment of the present invention will be described with reference to FIG. In the second embodiment shown in FIG. 7, the ratchet portion 12 includes a ratchet 12a provided with a first groove 12e and a ratchet receiver 12c provided with a second groove 12f, and the first groove 12e of the ratchet 12a. And the second groove 12f of the ratchet receiver 12c are fitted to each other so that the ratchet 12a is fixed to the ratchet receiver 12c, and the others are the first embodiment shown in FIGS. Is almost the same.

  In the second embodiment shown in FIG. 6, the same parts as those in the first embodiment shown in FIGS. 1 to 6 are denoted by the same reference numerals, and detailed description thereof is omitted.

  As shown in FIGS. 2 to 4, the pair of bearing portions 40 of the speed governor 30 are provided inside the side plate 1 a of the base 1, and the ratchet portion 12 is provided on the outer periphery of one bearing portion 40. On the other hand, the bearing portion 40 and the ratchet portion 12 are not provided outside the side plate 1 a of the base 1. For this reason, the speed governor 30 can be formed thin and compact as a whole, and even when the speed governor 30 is installed in a limited space such as a machine room-less elevator, the speed governor 30 is connected to the hoistway. 40 can be arranged at predetermined positions, and the entire layout can be varied.

  As shown in FIGS. 2 and 6, the bearing box 4 of the bearing portion 40 is provided with a protruding portion 4 a that protrudes in a direction perpendicular to the rotating shaft 3, and the inner side of the ratchet receiver 12 c of the ratchet portion 12 (bearing). On the side of the box 4, a notch 32 for fitting the protruding portion 4 a is provided. For this reason, the ratchet receiver 12c of the ratchet part 12 can be prevented from moving in the direction of the governor sheave 2 along the rotation shaft 3, and the ratchet part 12 can be provided stably.

  2 and 6, the first groove 12e of the ratchet 12a and the second groove 12f provided in the circumferential recess 12d of the ratchet receiver 12c are fitted to each other, so that the ratchet 12a receives the ratchet receiver. 12c is fixed. For this reason, since the ratchet 12a can be stably provided on the ratchet receiver 12c, it is possible to prevent the ratchet 12a from running out and causing malfunction. Further, since it is not necessary to fix the ratchet 12a to the ratchet receiver 12c by using a punch or the like, it is possible to prevent the inner diameter of the ratchet receiver 12c from being distorted by stamping.

  Further, according to the present embodiment, the ratchet 12a can be stably provided on the ratchet receiver 12c without using the C ring 12b as in the first embodiment. For this reason, the manufacturing process for providing the C ring 12b can be reduced, and the manufacturing cost can be reduced by the amount not using the C ring 12b.

Schematic which shows the elevator system which provided the governor by this invention. 1 is a front cross-sectional view showing a first embodiment of a governor according to the present invention. The side view which looked at the governor shown in FIG. 2 from the direction of III. The side view which looked at the governor shown in FIG. 2 from the direction of IV. Sectional drawing which shows the ratchet part in 1st Embodiment. Schematic which shows the fly weight in 1st Embodiment. Sectional drawing which shows the ratchet part in 2nd Embodiment. Front sectional drawing which shows the conventional governor. Side sectional drawing which shows the conventional governor.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Base 1a Side plate 2 Governor sheave 3 Rotating shaft 4 Bearing box 4a Protrusion part 5 Bearing 6 Governor rope 8a, 8b Fly weight 12 Ratchet part 12a Ratchet 1
12b C-ring 12c Ratchet receptacle 12d Circumferential recess 12e First groove 12f Second groove 13 Actuation claw 30 Speed governor 40 Bearing part

Claims (7)

In the elevator governor around which the governor rope is wound,
A base having a pair of opposing side plates;
A rotating shaft that extends between a pair of side plates of the base and is rotatably supported by bearings on each side plate;
A governor sheave fixed to the rotating shaft and rotatable according to the motion of the governor rope wound around,
A flyweight provided on one side of the governor sheave and with an operating claw attached thereto;
Provided on the outer periphery of one bearing portion is a ratchet portion that is rotatable with respect to the bearing portion and that can be engaged with an operating claw of a flyweight,
One bearing portion and the ratchet portion are arranged inside the corresponding side plate without projecting axially outward from the side plate,
The other bearing portion is disposed inside the corresponding side plate without protruding outward in the axial direction from the side plate , whereby one bearing portion and the other bearing portion are sandwiched between the pair of side plates. Elevator speed governor.   The elevator governor according to claim 1, wherein the bearing portion includes a bearing that supports the rotating shaft and a bearing box that is disposed outside the bearing.   The elevator governor according to claim 1, wherein the bearing portion has a protrusion that restricts the movement of the ratchet portion toward the inner periphery.   The elevator speed governor according to claim 1, wherein the ratchet portion includes a ratchet receiver slidably provided on the outer periphery of the bearing portion and a ratchet fixed to the ratchet receiver.   The elevator speed governor according to claim 4, wherein the ratchet receiver includes a restricting portion that restricts the movement of the ratchet toward the inner peripheral side.   5. The governor for an elevator according to claim 4, wherein a movement of the ratchet in the rotational axis direction relative to the ratchet receiver is restricted by providing a C-ring that abuts the ratchet from the side on the outer periphery of the ratchet receiver. The ratchet and the ratchet receiver are each provided with a first groove and a second groove,
The adjustment of the elevator according to claim 4, wherein the ratchet having the first groove and the ratchet receiver having the second groove are fitted to restrict movement of the ratchet in the rotation axis direction relative to the ratchet receiver. Speed machine.

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