Elevator speed regulator and elevator

Abstract

To provide an elevator speed regulator and an elevator that are able to easily adjust force for holding a speed regulator rope.SOLUTION: An elevator speed regulator of an embodiment includes a shaft, a speed regulator sheave, a brake disc, and a brake unit. The brake unit includes: a support member fixed to a frame; a pair of brake shoes supported by the support member and sandwiching a brake disc; and an adjustment member that adjusts an axial position of the brake shoes. The brake unit is located further outside than the speed regulator sheave in a radial direction of the shaft.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] An embodiment of the present invention relates to an elevator governor and an elevator. [Background technology]

[0002] Conventionally, an elevator is configured such that a car moves in a hoistway to a desired floor. In such an elevator, a speed governor (elevator speed governor) is provided to stop at least the car when the descent speed of at least the car and the counterweight reaches a predetermined speed.

[0003] A traction type governor is known as this type of elevator governor. A traction type governor stops the rotation of the governor sheave and generates a rope holding force by the friction between the governor sheave and the governor rope. In this traction type governor, if the friction coefficient between the governor sheave and the governor rope changes due to environmental or aging factors, the rope holding force, which is the holding force against the governor rope, also fluctuates. If the friction coefficient between the governor sheave and the governor rope increases, damage to the governor rope increases, affecting its lifespan, and the holding force increases, increasing the load on the link mechanism that operates the emergency stop device.

[0004] For this reason, a mechanism for controlling rope retention using friction material has been proposed as a protective measure. A friction material is used in the ratchet mechanism that locks the rotation of the governor sheave, and the frictional force of the friction material locks the rotation of the governor sheave. However, when torque above a certain level is generated in the governor sheave, the frictional force is overcome and the governor sheave rotates, so that the rope retention force can be kept below a certain value. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] International Publication No. 2011-048270 [Patent Document 2] International Publication No. 2010-084564 Summary of the Invention [Problem to be solved by the invention]

[0006] In the rope retention force control mechanism of the prior art, the control mechanism and adjustment parts are built into the speed governor, so that after the speed governor is assembled, the friction force of the rope retention force control mechanism cannot be adjusted unless it is disassembled once.

[0007] Therefore, an object of an embodiment of the present invention is to provide an elevator governor and an elevator that can easily adjust the force that holds the governor rope. [Means for solving the problem]

[0008] an elevator governor according to an embodiment, comprising: a frame; a shaft provided on the frame; a governor sheave rotatable around the shaft, with a governor rope hung thereon and rotating as the governor rope moves; a brake disc aligned with the governor sheave in the axial direction of the shaft, having a larger diameter than the governor sheave, and provided rotatably around the shaft; a support member fixed to the frame; a pair of brake shoes supported by the support member and sandwiching the brake disc; and an adjustment member for adjusting the axial position of the brake shoes; a brake unit located radially outboard of the governor sheave of the shaft; a ratchet wheel provided integrally with the brake disc; and a pawl provided integrally with the governor sheave, and a connecting mechanism in which the pawl engages with the ratchet wheel when the rotational speed of the governor sheave reaches an emergency stop device operating speed, connecting the governor sheave and the brake disc. [Brief description of the drawings]

[0009] [Figure 1] FIG. 1 is a diagram showing a schematic diagram of an overall configuration of an elevator according to an embodiment. [Diagram 2] FIG. 2 is a perspective view showing a speed governor of an elevator according to the embodiment. [Diagram 3] FIG. 3 is a rear view showing the elevator governor according to the embodiment. [Figure 4] FIG. 4 is a rear view showing a part of the elevator governor according to the embodiment. [Diagram 5] FIG. 5 is a perspective view showing a brake disc and a ratchet wheel in the elevator governor according to the embodiment. [Figure 6] FIG. 6 is a perspective view showing a part of an elevator governor according to the embodiment. [Figure 7] FIG. 7 is a side view showing a brake unit in the elevator governor according to the embodiment. [Figure 8] FIG. 8 is a side view showing a plate member in the elevator governor according to the embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] Hereinafter, exemplary embodiments of the present invention will be described. The configurations (technical features) of the embodiments described below, as well as the actions and results (effects) brought about by the configurations, are merely examples.

[0011] The drawings are schematic, and the dimensional relationships and ratios of the elements may differ from the reality. Furthermore, the drawings may include parts whose dimensional relationships and ratios differ from one another.

[0012] Fig. 1 is a diagram showing a schematic diagram of the overall configuration of an elevator according to an embodiment. The elevator 1 according to the embodiment shown in Fig. 1 is installed in a hoistway of a building (also called a structure) and transports passengers to desired floors of the building based on call registrations made by operating various buttons on an operating device in a car 2 and call buttons on a call device provided at the landing of each floor. Of course, the hoistway is provided across multiple floors of the building and extends linearly along the vertical direction.

[0013] As shown in FIG. 1, an elevator 1 includes a car 2, a counterweight 4, a main rope 6, a drive mechanism 7, a compensation device 8, an elevator control unit (not shown), and an emergency stop device 9.

[0014] The car 2 is housed in the elevator shaft and supported by a car guide rail (not shown) so as to be movable in the vertical direction. The car 2 is formed in a box shape and accommodates passengers inside. Various buttons and the like of an operating device for performing various operations of the elevator 1 are provided inside the car 2.

[0015] The counterweight 4 is housed in the hoistway and is supported by a weight guide rail (not shown) so as to be freely movable in the vertical direction.

[0016] The car 2 is fixed to one end of the main rope 6, and the counterweight 4 is fixed to the other end. The main rope 6 is hung around a drive sheave 10 of a drive mechanism 7, and is provided so that the car 2 and the counterweight 4 rise and fall in opposite directions. In other words, the elevator 1 is a so-called bucket-type elevator. In this way, the main rope 6 is moved by a winch to raise and lower the car 2 and the counterweight 4 in a bucket-type manner.

[0017] The drive mechanism 7 is provided, for example, in a machine room or the like provided above the hoistway, and includes a known hoist (not shown), a drive sheave 10 attached to the output shaft of the hoist, and a deflection sheave 11 rotatably provided near the drive sheave 10. The hoist is attached to the floor of the machine room or the like. The drive sheave 10 and the deflection sheave 11 are hung on the upper side of the main rope 6 located between the counterweight 4 and the car 2. The drive mechanism 7 is a hoist that rotates and drives the drive sheave 10 to move the main rope 6 in the hoistway, thereby raising and lowering the car 2 and the counterweight 4. The hoist of the drive mechanism 7 is provided with a brake that restricts the movement of the main rope 6 (i.e., does not move the main rope 6).

[0018] The compensation device 8 includes a compensating rope 12 having one end attached to the car 2 and the other end attached to the counterweight 4, and a compensator 13 hung on the compensating rope 12. The compensation device 8 suppresses vibrations of the car 2 and the counterweight 4 during ascent and descent, and offsets the weight of the main rope 6 when the car 2 and the counterweight 4 ascend and descend in the hoistway.

[0019] The elevator control unit is a calculation device provided in the aforementioned machine room or the like, and equipped with a RAM, a ROM, a CPU, an input / output port, and a storage device (not shown). The elevator control unit is connected to the operating device of the car 2, the call devices at the landings on each floor, the drive mechanism 7, etc., and controls the entire elevator 1.

[0020] The emergency stop device 9 includes a governor 14, a governor rope 15, and a pair of emergency stop mechanisms (not shown) attached to the bottom surface of the car 2. The governor 14 is an example of an elevator governor. The governor 14 is provided in a machine room or the like. The governor 14 includes a rotatably provided governor sheave 22 and the like. The governor rope 15 is hung on the governor sheave 22. The governor sheave 22 rotates together with the governor rope 15. The detailed configuration of the governor 14 will be described later.

[0021] The governor rope 15 is formed in a loop shape, and is hung on the upper side of the governor sheave 22. A tensioner 17 is suspended from the governor rope 15. The governor rope 15 is connected to a pair of emergency stop mechanisms via a connection part 18. The governor rope 15 runs endlessly (circularly) around the governor sheave 22 and the tensioner 17 in conjunction with the raising and lowering operation of the car 2. That is, the governor rope 15 moves, specifically, moves in a circular manner.

[0022] In the above-mentioned emergency stop device 9, when the descent speed of the car 2 reaches a first speed, which is a predetermined set speed, the governor 14 stops the movement of the governor rope 15. When the movement of the governor rope 15 stops, the emergency stop device 9 causes the emergency stop mechanism to stop the car 2 relative to the car guide rail.

[0023] Fig. 2 is a perspective view showing a speed governor of an elevator according to an embodiment. Fig. 3 is a rear view showing a speed governor of an elevator according to an embodiment. Fig. 4 is a rear view showing a part of the speed governor of an elevator according to an embodiment.

[0024] As shown in FIG. 2, the governor 14 includes a frame 21, a governor sheave 22, a brake device 23, a connecting mechanism 24, and a shaft 26.

[0025] The frame 21 supports the governor sheave 22, the connecting mechanism 24, and the shaft 26. The shaft 26 is supported by the frame 21 so as to be rotatable about a central rotation axis Ax.

[0026] Here, the rotation central axis Ax is the central axis (center line) of the shaft 26 and the governor sheave 22. That is, the axial direction, radial direction, and circumferential direction of the rotation central axis Ax are the same as the axial direction, radial direction, and circumferential direction of the shaft 26 and the governor sheave 22. In the following description, unless otherwise specified, the axial direction, radial direction, and circumferential direction are the axial direction, radial direction, and circumferential direction of the rotation central axis Ax, that is, the axial direction, radial direction, and circumferential direction of the shaft 26. In this embodiment, the axial direction is along the horizontal direction.

[0027] As shown in FIGS. 2 to 4, the frame 21 has a bottom wall 21a, a pair of support walls 21b and 21c, and a connecting wall 21d.

[0028] The bottom wall 21a is formed in a rectangular flat plate shape extending in the horizontal direction. The bottom wall 21a is attached to, for example, the floor surface of a machine room or the inside of a hoistway via an attachment member.

[0029] The pair of support walls 21b, 21c are each formed in a substantially triangular flat plate shape, are provided in parallel with a gap between them in the axial direction, and extend vertically upward from the bottom wall 21a. The pair of support walls 21b, 21c rotatably support the shaft 26. The pair of support walls 21b, 21c rotatably support the shaft 26, and thereby rotatably support the governor sheave 22 between them.

[0030] The connecting wall 21d is provided across the vertically extending edges of the pair of support walls 21b, 21c, and connects the pair of support walls 21b, 21c.

[0031] Further, the frame 21 has an opening 21e formed between the pair of support walls 21b, 21c.

[0032] 2 and 4, the connecting mechanism 24 has a pair of flyweights 25 (FIG. 2), a speed adjustment spring 31 (FIG. 2), and a ratchet mechanism 40 (FIG. 4). Note that only one of the pair of flyweights 25 is shown in FIG. 2.

[0033] The pair of flyweights 25 are mounted on the governor sheave 22 with a shaft 26 positioned therebetween, and rotate integrally with the governor sheave 22. The pair of flyweights 25 are also rotatably supported by the governor sheave 22 via a shaft 32. The shaft 32 is mounted at a position eccentric to the center of gravity of the flyweights 25. The pair of flyweights 25 are connected to each other by a link.

[0034] The speed adjustment spring 31 is provided on the governor sheave 22 and rotates integrally with the governor sheave 22. The speed adjustment spring 31 is elastically compressed in response to the rotation of the flyweight 25 about the shaft 32, which is generated by the action of centrifugal force accompanying the rotation of the governor sheave 22.

[0035] As shown in FIG. 4, the ratchet mechanism 40 has a ratchet wheel 41 and a pawl 42.

[0036] The ratchet wheel 41 is supported by the frame 21 so as to be rotatable about the shaft 26 .

[0037] Fig. 5 is a perspective view showing a brake disc and a ratchet wheel in an elevator governor according to an embodiment. As shown in Fig. 5, the ratchet wheel 41 is provided integrally with a brake disc 51 of the brake device 23. The rotation is restricted by the braking force of the brake unit 52 and the ratchet wheel 41 is stopped.

[0038] As shown in FIG. 4, the pawl 42 is provided on the governor sheave 22 and rotates integrally with the governor sheave 22. The pawl 42 is supported by the governor sheave 22 so as to be rotatable around a shaft 44 within a predetermined angular range. The pawl 42 is also connected to the flyweight 25 via a connecting member 33. When the rotational speed of the governor sheave 22 is less than a first speed that is greater than 0, the pawl 42 moves away from the ratchet wheel 41 and does not mesh with the ratchet wheel 41. When the rotational speed of the governor sheave 22 reaches the first speed, the pawl 42 rotates around the shaft 44 in response to the rotation of the flyweight 25 about the shaft 32, which is generated by the action of centrifugal force accompanying the rotation of the governor sheave 22, and meshes with the ratchet wheel 41. This connects the governor sheave 22 and the brake disc 51 (brake device 23), and the rotation of the governor sheave 22 is stopped by the braking force of the brake unit 52, which in turn stops the movement of the governor rope 15. For example, the first speed is an emergency stop device operating speed at which the emergency stop device operates.

[0039] Fig. 6 is a perspective view showing a part of the elevator speed governor according to the embodiment. Fig. 7 is a side view showing a brake unit in the elevator speed governor according to the embodiment. Fig. 8 is a side view showing a plate member in the elevator speed governor according to the embodiment.

[0040] As shown in FIG. 6, the braking device 23 includes a brake disc 51 and a brake unit 52.

[0041] The brake disc 51 is provided alongside the governor sheave 22 in the axial direction of the shaft 26. The brake disc 51 is supported by the frame 21 so as to be rotatable around the shaft 26. The brake disc 51 has a larger diameter than the governor sheave 22. As a result, the brake disc 51 has an outer portion 51a located radially outward from the governor sheave 22 when viewed in the axial direction.

[0042] As shown in Fig. 5, the brake disc 51 is integrally provided with the ratchet wheel 41. The brake disc 51 and the ratchet wheel 41 are fixed to each other. The brake disc 51 and the ratchet wheel 41 may be formed of separate members and fixed to each other, or may be integrally formed. The brake disc 51 is also called a sliding disc.

[0043] The brake unit 52 limits the rotation of the brake disc 51. As shown in Figs. 2 and 6, the brake unit 52 is located outside the governor sheave 22 in the radial direction of the shaft 26. Also, as shown in Figs. 2, 3, and 6, at least a part (for example, a part) of the brake unit 52 is located outside the frame 21. As an example, a part of the brake unit 52 is located between the upper parts of a pair of support walls 21b, 21c of the frame 21. Note that the entire brake unit 52 may be located outside the frame 21. Also, as shown in Figs. 2 and 6, the brake unit 52 is exposed to the outside of the frame 21 from the opening 21e.

[0044] 7, the brake unit 52 has a support member 54, a pair of brake shoes 55 and 56, a bolt 57 (adjustment member), and a spring 58. The bolt 57 is an example of the adjustment member.

[0045] As shown in FIG. 6, the support member 54 is fixed to the inner surface of the support wall 21 c of the frame 21 by a bolt 59 and a nut 60 .

[0046] As shown in FIG. 7, the support member 54 has a base portion 54a and a pair of opposing walls 54b, 54c. The base portion 54a is provided with a through hole 54d that penetrates the base portion 54a in the axial direction. The shaft portion of a bolt 59 is inserted into the through hole 54d. The pair of opposing walls 54b, 54c protrude from the base portion 54a toward the shaft 26 and are provided at a distance from each other in the axial direction. The opposing wall 54b faces the support wall 21c of the frame 21, and the opposing wall 54c faces the support wall 21b of the frame 21. That is, the opposing wall 54c is provided on the support wall 21b side with respect to the opposing wall 54b. The outer portion 51a of the brake disc 51 is located in a space 54f between the pair of opposing walls 54b, 54c.

[0047] Further, the facing wall 54c is provided with a female screw portion 54e. The female screw portion 54e is provided so as to penetrate the facing wall 54c in the axial direction. The female screw portion 54e is also referred to as a nut portion. A bolt 57 is coupled to the female screw portion 54e.

[0048] The bolt 57 has a head 57a and a shaft 57b extending from the head 57a. The head 57a is located on the opposite side of the space 54f with respect to the opposing wall 54c. A male thread is provided on the shaft 57b, and this male thread is coupled with the female thread 54e. The bolt 57 is supported by the female thread 54e (frame 21) so as to be movable in the axial direction.

[0049] The pair of brake shoes 55, 56 are provided in a space 54f between a pair of opposing walls 54b, 54c of the support member 54. The pair of brake shoes 55, 56 are supported by the support member 54 and sandwich the brake disc 51. One of the pair of brake shoes 55, 56 is fixed to the opposing wall 54b of the support member 54. The other of the pair of brake shoes 55, 56 is supported by the support member 54 so as to be movable in the axial direction (position adjustable). For example, the brake shoe 56 is supported by a rail portion provided on the base portion 54a of the support member 54 so as to be movable in the axial direction. The support structure of the brake shoes 56 is not limited to the above. The pair of brake shoes 55, 56 are made of a metal material or a synthetic resin material. The material of the pair of brake shoes 55, 56 is not limited to the above.

[0050] The brake shoe 56 is in contact with the tip of the shaft portion 57b of the bolt 57. The brake shoe 56 is pushed by the tip of the shaft portion 57b of the bolt 57 moving toward the brake disc 51, and moves axially together with the tip. This allows the axial position of the brake shoe 56 to be adjusted by the bolt 57.

[0051] The spring 58 is, for example, a coil spring. However, the spring 58 is not limited to the above. With the shaft portion 57b of the bolt 57 inserted inside, the spring 58 is interposed in a compressed state between the opposing wall 54c of the support member 54 and the brake shoe 56. The spring 58 presses the brake shoe 56 against the brake disc 51 by the elastic force. This makes it possible to maintain the pressing force of the brake shoe 56 against the brake disc 51 even if the bolt 57 becomes loose.

[0052] 6, the plate member 53 is interposed between the support member 54 and the frame 21. The plate member 53 is for adjusting the axial position of the brake unit 52, and positions the brake shoes 55, 56 fixed to the support member 54 at a position where they come into contact with the brake disc 51. The plate member 53 is available in a number of different thicknesses (plate thicknesses), for example, and can be replaced with a different one depending on the reduction in plate thickness caused by wear of the brake shoe 55.

[0053] Fig. 8 is a side view showing a plate member in an elevator governor according to an embodiment. As shown in Fig. 8, plate member 53 has a gripping portion 53a and a plurality of protruding portions 53b. At least a portion of gripping portion 53a is located outside frame 21 and can be gripped by an operator (person). A notch 53c is provided between adjacent protruding portions 53b, and a shaft portion of a bolt 59 is inserted into this notch 53c. Plate member 53 is also called a spacer or a distance adjustment member.

[0054] In the brake unit 52, a pair of brake shoes 55, 56 sandwich the brake disc 51, and the rotation of the brake disc 51 is stopped by friction between the pair of brake shoes 55, 56 and the brake disc 51. In other words, the pair of brake shoes 55, 56 grip the brake disc 51.

[0055] In the governor 14 configured as described above, even if the centrifugal force accompanying the rotation of the governor sheave 22 acts on the flyweight 25, the biasing force of the speed adjustment spring 31 prevents the pawl 42 from engaging with the ratchet wheel 41 until the descent speed of the car 2 reaches the first speed.

[0056] Then, when the descending speed of the car 2 reaches the set speed and the rotation speed of the governor sheave 22 reaches the first speed, the centrifugal force accompanying the rotation of the governor sheave 22 acts on the flyweight 25, and the pawl 42 meshes with the ratchet wheel 41. Then, the brake disc 51 and the governor sheave 22 are connected via the ratchet mechanism 40. At this time, the brake disc 51 is stopped by the brake unit 52, so that the rotation of the governor sheave 22 is stopped. That is, the brake device 23 stops the governor sheave 22. Also, when the governor sheave 22 stops, the movement of the governor rope 15 is stopped by the frictional force between the governor sheave 22 and the governor rope 15, and the emergency stop device is operated to stop the movement of the car 2. That is, the brake device 23 stops the movement of the car 2 via the governor sheave 22 and the governor rope 15. At this time, when a torque greater than a certain level is generated in the governor sheave 22 and the brake disc 51, the torque overcomes the frictional force between the brake disc 51 and the pair of brake shoes 55, 56, and the brake disc 51 and the governor sheave 22 rotate, thereby making it possible to maintain the holding force of the governor rope 15 by the governor 14, i.e., the frictional force between the brake disc 51 and the pair of brake shoes 55, 56, below a certain value.

[0057] In the above configuration, the frictional force between the brake disc 51 and the pair of brake shoes 55, 56 can be adjusted by adjusting the pressing force of the brake shoes 56 against the brake disc 51. In other words, the frictional force between the brake disc 51 and the pair of brake shoes 55, 56 can be adjusted by adjusting the pressing force of the bolts 57 against the brake shoes 56, i.e., the tightening amount (tightening torque) of the bolts 57. Such adjustments are made when installing the elevator or during maintenance and inspection.

[0058] As described above, the governor 14 (elevator governor) of this embodiment includes the frame 21, the shaft 26, the governor sheave 22, the brake disc 51, the brake unit 52, and the connecting mechanism 24. The shaft 26 is provided in the frame 21. The governor sheave 22 is rotatable around the shaft 26, has the governor rope 15 wound around it, and rotates with the movement of the governor rope 15. The brake disc 51 is aligned with the governor sheave 22 in the axial direction of the shaft 26, has a larger diameter than the governor sheave 22, and is provided rotatable around the shaft 26. The brake unit 52 includes a support member 54 fixed to the frame 21, a pair of brake shoes 55, 56 supported by the support member 54 and sandwiching the brake disc 51 therebetween, and a bolt 57 (adjustment member) for adjusting the axial positions of the brake shoes 55, 56. The brake unit 52 is located outside the governor sheave 22 in the radial direction of the shaft 26. The connecting mechanism 24 has a ratchet wheel 41 provided integrally with the brake disc 51, and a pawl 42 provided integrally with the governor sheave 22. When the rotational speed of the governor sheave 22 reaches the emergency stop device operating speed (first speed), the connecting mechanism 24 has the pawl 42 meshing with the ratchet wheel 41, connecting the governor sheave 22 and the disc.

[0059] With this configuration, the brake unit 52 is located radially outboard of the governor sheave 22 of the shaft 26, so that the force holding the governor rope 15 can be easily adjusted without disassembling the governor 14.

[0060] In addition, at least a portion of the brake unit 52 is located outside the frame 21.

[0061] With this configuration, the force holding the governor rope 15 can be adjusted even more easily.

[0062] Further, an opening 21e is provided in the frame 21, and the brake unit 52 is exposed to the outside of the frame 21 through the opening 21e.

[0063] With this configuration, the force holding the governor rope 15 can be adjusted even more easily.

[0064] The governor 14 also includes a plate member 53. One of a pair of brake shoes 55, 56 is fixed to a support member 54, and the other of the pair of brake shoes 55, 56 is movably supported by the support member 54 and its position relative to the support member 54 can be adjusted by a bolt 57 (adjustment member). The plate member 53 is interposed between the support member 54 and the frame 21, and positions the brake shoes 55, 56 fixed to the support member 54 at a position where they come into contact with the brake disc 51.

[0065] With this configuration, the brake shoes 55, 56 fixed to the support member 54 can be easily positioned.

[0066] In the above embodiment, an example in which one brake unit 52 is provided has been shown, but a plurality of brake units 52 may be provided. For example, in Fig. 2, a second brake unit may be provided on the opposite side of the brake unit 52 with respect to the shaft 26. Also, in Fig. 2, a second brake unit may be provided below the brake unit 52 in the vertical direction. The number of brake units 52 may be three or more.

[0067] In addition, a drum brake mechanism that stops the rotation of the governor 14 may be installed inside the ratchet mechanism 40, and a mechanism that allows the braking force (shoe pressing pressure) of the drum brake mechanism to be adjusted from the outside of the frame 21 may be installed.

[0068] Although some embodiments of the present invention have been described, these embodiments are presented as examples and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, substitutions, and modifications can be made without departing from the spirit of the invention. These embodiments and their modifications are included in the scope and spirit of the invention, and are included in the scope of the invention and its equivalents described in the claims. [Explanation of symbols]

[0069] 1...elevator, 14...governor (elevator governor), 15...governor rope, 21...frame, 21e...opening, 22...governor sheave, 24...connecting mechanism, 26...shaft, 41...ratchet wheel, 42...pawl, 51...brake disc, 52...brake unit, 53...plate member, 54...support member, 55, 56...brake shoe, 57...bolt (adjusting member).

Claims

1. A frame, A shaft provided on the frame; a governor sheave that is rotatable around the shaft, has a governor rope hung thereon and rotates in accordance with the movement of the governor rope; a brake disc aligned with the governor sheave in the axial direction of the shaft, having a larger diameter than the governor sheave, and rotatably provided around the shaft; a brake unit including a support member fixed to the frame, a pair of brake shoes supported by the support member and sandwiching the brake disc therebetween, and an adjustment member for adjusting the axial position of the brake shoes, the brake unit being positioned radially outward of the governor sheave in the shaft; a connecting mechanism including a ratchet wheel integral with the brake disc and a pawl integral with the governor sheave, the pawl meshing with the ratchet wheel when the rotational speed of the governor sheave reaches an emergency stop device operating speed, thereby connecting the governor sheave and the brake disc; An elevator governor equipped with the above.

2. At least a portion of the brake unit is located outside the frame.

2. The elevator governor according to claim 1.

3. The frame has an opening, The brake unit is exposed to the outside of the frame through the opening.

2. The elevator governor according to claim 1.

4. A plate member is provided, One of the pair of brake shoes is fixed to the support member, and the other of the pair of brake shoes is movably supported by the support member and its position relative to the support member can be adjusted by the adjustment member, The plate member is interposed between the support member and the frame, and positions the brake shoe fixed to the support member at a position where the brake shoe contacts the brake disc.

2. The elevator governor according to claim 1.

5. An elevator equipped with the elevator governor according to any one of claims 1 to 4.

Images