JP2015101420A - Speed governor for elevator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a speed governor for an elevator which facilitates attachment/detachment of a sheave to/from a rotor for an operation test.SOLUTION: A speed governor for an elevator comprises: a sheave 10 attached to a lateral shaft 3; a governor rope 4 wound around the sheave 10 while being connected to a platform; a rotor 20 for an operation test, attached to the lateral shaft 3; and a connecting structure for connecting the sheave 10 and the rotor 20 for the operation test, such that they can be attached to or separated from each other. The sheave 10 is attached to the lateral shaft 3 so as to be movable in an axial direction. The connecting structure includes: a plurality of fitting grooves 15 for axially fitting the platform 10 and the rotor 20 for the operation test such that they can rotate integrally; and a plurality of fittable teeth 24, which are fitted in the corresponding fitting grooves 15. The connecting structure also has a preventing member 30, which is attached to the lateral shaft 3 so as to be detachable while the sheave 10 and the rotor 20 for the operation test are fitted together, and which prevents movement of the sheave 10 away from the rotor 20 for the operation test.

Description

  The present invention relates to an elevator governor that stops a car when the speed of the car is exceeded, and relates to an elevator governor that includes a mechanism for saving labor in an operation test.

  An elevator governor is disclosed in Patent Document 1. The elevator speed governor disclosed in Patent Document 1 includes a speed control rope connected to a car, a sheave that is rotatably mounted on a horizontal axis, and has a speed control rope wound around, A rotating body that rotates integrally with the shaft, a plurality of connecting members that connect the sheave and the rotating body, and an operating body that stops the car when the outer peripheral speed of the rotating body reaches a predetermined speed.

  In this elevator governor, normally, the sheave on which the rope for speed regulation is hung and the rotating body are connected by a plurality of connecting members, and when the sheave rotates according to the movement of the car The rotating body also rotates in synchronization with the rotation of the sheave. On the other hand, when an operation test is performed on the elevator governor, the elevator governor is removed from the rotation of the rotating body to the sheave via the horizontal axis by removing the connecting member. The In this state, the rotating body is rotationally driven, and when the outer peripheral speed of the rotating body reaches a predetermined speed, it is inspected whether the operating body operates.

JP-A-6-255932 (paragraphs 0007 to 0013, FIG. 1)

  The elevator governor disclosed in Patent Document 1 requires a work to remove a plurality of connecting members in order to disconnect the rotating body (the rotating body for operation test) and the sheave before the operation test. Yes, after the operation test, a plurality of connecting members must be attached in order to connect the sheave to the rotating body. These removal work and installation work were complicated.

  The present invention has been made in consideration of the above-described circumstances, and an object of the present invention is to provide an elevator governor that can contribute to facilitating the detachment of the sheave from the operation test rotor.

  In order to achieve the above object, a speed governor for an elevator according to the present invention includes a horizontal shaft extending in a horizontal direction, a sheave mounted on the horizontal shaft, and the sheave connected to a passenger car. A governor rope hung around, an operation test rotating body mounted on the horizontal axis, a coupling structure for detachably coupling the sheave and the operation test rotating body, and rotation of the operation test rotating body An overspeed detection device for detecting that the magnitude of the speed has reached a specified value or more, and that the rotation speed of the rotating body for operation test has reached a specified value or more by the overspeed detection device. In the elevator speed governor that stops the car when detected, one of the sheave and the operation test rotating body is mounted so as to be movable in the axial direction with respect to the horizontal axis, The sheave and the operation test rotor In the state where the sheave and the rotary body for operation test are fitted together, the sheave and the sheave It is characterized by comprising a blocking member for blocking movement of one of the rotating bodies for operation test away from the other.

  In the speed governor for an elevator according to the present invention, the operation of dividing the operation test rotor and the sheave is performed by removing the blocking member from the horizontal axis, and then one of the sheave and the operation test rotor on the horizontal axis. Is moved in a direction away from the other. Further, in the elevator governor according to the present invention, the operation of connecting the operation test rotating body and the sheave is to move one of the sheave and the operation test rotating body toward the other on the horizontal axis. The sheave and the rotating body for operation test are fitted together, and then a blocking member is attached to the horizontal axis. That is, in the elevator governor according to the present invention, only the blocking member is removed before the operation test, and only the blocking member is attached after the operation test. As a result, the elevator governor according to the present invention can contribute to facilitating the attachment / detachment of the sheave to / from the rotating body for operation test.

It is a longitudinal cross-sectional view of the part which detects the overspeed of a passenger car in the governor of the elevator which concerns on one Embodiment of this invention, "(a)" shows the state with which the sheave and the rotary body for an operation test were couple | bonded. “(B)” shows a state in which the sheave is separated from the rotor for operation test. It is a figure which shows the convex part provided in the sheave shown in FIG. It is a figure which shows the to-be-inserted part provided in the rotary body for operation | movement test shown in FIG. It is a perspective view of the blocking member shown in FIG.

  An elevator governor according to an embodiment of the present invention will be described with reference to FIGS.

  As shown in FIG. 1 (a), an elevator governor according to the present embodiment includes a pair of support members 1 and 2 provided in a machine room (not shown), and these support members 1 and 1. 2, the horizontal shaft 3 provided in a posture extending in the horizontal direction, the sheave 10 attached to the horizontal shaft 3, and the sheave 10 connected to a car (not shown). The governor rope 4, the operation test rotating body 20 attached to the horizontal shaft 3, the coupling structure for detachably coupling the sheave 10 and the operation test rotating body 20, and the rotational speed of the operation test rotating body 20 are large. And an overspeed detection device 5 that detects that the value has reached a specified value or more. The elevator governor according to the present embodiment has a safety device (not shown) when the overspeed detection device 5 detects that the rotational speed of the operation test rotor 20 has reached a specified value or more. Is used to stop the car.

  Both the sheave 10 and the operation test rotating body 20 are mounted so as to be movable in the axial direction with respect to the horizontal axis 3 and to be rotatable around the axis. The motion test rotor 20 is prevented from moving away from the sheave 10 by a structure (not shown) when mounted on the horizontal shaft 3.

  The sheave 10 includes a rim 11 around which the governor rope 4 is hung, a hub 12 through which the horizontal shaft 3 is inserted, and four spokes 13 that connect the rim 11 and the hub 12. A rope groove 14 in which the governor rope 4 is disposed is provided on the outer peripheral surface of the rim 11.

  The operation test rotating body 20 includes a rim 21 coaxially positioned with the rim 11 of the sheave 10, a hub 22 through which the horizontal shaft 3 is inserted, and four spokes 23 that connect the rim 21 and the hub 22. Is provided. An overspeed detection device 5 is attached to the spoke 23. This overspeed detection device 5 indicates that the centrifugal force associated with the rotation of the operation test rotating body 20 has reached a specified value or more, and that the rotation speed of the operation test rotating body 20 has reached a specified value or more. Is detected.

  The coupling structure for detachably coupling the sheave 10 and the operation test rotating body 20 is to fit the sheave 10 and the operation test rotating body 20 in the axial direction so as to be integrally rotatable. 10 and an operation test rotating body 20 are attached to the horizontal shaft 3 in a state where the operation test rotating body 20 is fitted, and a blocking member 30 that prevents the sheave 10 from being separated from the operation test rotating body 20 is provided.

  In more detail, as shown in FIGS. 2 and 3, the coupling structure is one of the inner peripheral surface of the rim 11 of the sheave 10 and the outer peripheral surface of the rim 21 of the rotating body 20 for operation test, for example, the rim 11. A plurality of fitting grooves 15 provided in the inner peripheral surface of the rim 11 so as to extend in the axial direction and arranged at equal angular intervals over the entire circumference of the rim 11, and the inner peripheral surface and the operation of the rim 11 of the sheave 10. A plurality of fitting teeth 24 provided on the other of the outer peripheral surfaces of the rim 21 of the test rotating body 20, that is, on the outer peripheral surface of the rim 21, and inserted and fitted in the respective fitting grooves 15 from the axial direction. With. In other words, the coupling structure is a structure in which the sheave 10 and the rotating body for operation test are axially and rotatably fitted together by the plurality of fitting grooves 15 and the plurality of fitting teeth 24, that is, spline fitting. It fits together.

  The plurality of fitting grooves 15 are set to have the same shape and the same size. The plurality of fitting teeth 24 are also set to have the same shape and the same size.

  As shown in FIG. 4, the blocking member 30 is a resin-made arc-shaped elastic body, and has a central angle smaller than 180 ° and a diameter dimension set shorter than the diameter dimension of the horizontal axis 3. Yes, it is positioned by tightening the outer peripheral surface of the horizontal shaft 3 in a state where both ends are spread against the elastic force. That is, the blocking member 30 can be attached to and detached from the horizontal shaft 3 by being expanded in a direction in which both end portions are separated against the elastic force.

  In addition, the rim 21 of the operation test rotating body 20 has a flange 25 positioned so as to overlap the rim 11 of the sheave 10 in the axial direction when the sheave 10 and the operation test rotating body 20 are fitted together. Protruding in the direction. The flange 25 is provided continuously over the entire circumference of the rim 21.

  When an operation test is performed on the governor of the elevator according to this embodiment configured as described above, the blocking member 30 is removed from the horizontal shaft 3 and the sheave 10 is wound around the governor rope 4. The sheave 10 and the motion test rotating body 20 are separated from each other by being moved away from the motion test rotating body 20. Then, when the operation test rotator 20 is driven to rotate and the magnitude of the rotation speed of the operation test rotator 20 reaches a specified value or more, it is inspected whether or not a safety device (not shown) is activated. .

  The elevator governor according to the present embodiment has the following effects.

  In the elevator governor according to the present embodiment, the operation of dividing the sheave 10 and the operation test rotor 20 is performed by removing the blocking member 30 from the horizontal shaft 3 and then, as shown in FIG. In other words, the sheave 10 is moved in the direction away from the operation test rotor 20 on the horizontal axis 3. In the elevator governor according to the present embodiment, the operation of connecting the operation test rotating body 20 and the sheave 10 moves the sheave 10 on the horizontal axis 3 in a direction approaching the operation test rotating body 20. By doing so, as shown in FIG. 1A, the sheave 10 and the operation test rotating body 20 are fitted together, and then the blocking member 30 is mounted on the horizontal shaft 3. That is, in the elevator governor according to the present embodiment, only the blocking member 30 is removed before the operation test, and only the blocking member 30 is attached after the operation test. Thereby, the governor of the elevator according to the present embodiment can contribute to facilitating the detachment of the sheave from the operation test rotor.

  In the elevator governor according to the present embodiment, the blocking member 30 can be attached to and detached from the horizontal shaft 3 by being widened in a direction in which both ends are separated against the elastic force. It is easier to handle than those that can be attached using the above. Also by this, the elevator governor according to the present embodiment can contribute to facilitating the detachment of the sheave from the operation test rotating body.

  In the elevator governor according to the above-described embodiment, the fitting groove 15 is provided on the rim 11 of the sheave 10 and the fitting tooth 24 is provided on the rim 21 of the operation test rotating body 20. However, in the present invention, the fitting groove may be provided on the rim of the rotating body for operation test, and the fitting teeth may be provided on the rim of the sheave.

  In the elevator speed governor according to the above-described embodiment, the movement of the operation test rotating body 20 in the direction away from the sheave 10 is prevented by the structure (not shown), and the movement away from the operation test rotating body 20 is performed. Although the movement of the sheave 10 is blocked by the blocking member 30, the present invention is not limited to the movement of the rotating body for operation test in the direction away from the sheave by the structure (not shown). The movement of the sheave in the direction away from the rotating body may be blocked by the same structure (not shown), and the movement of the rotating body for operation test in the direction away from the sheave may be blocked by the blocking member. .

DESCRIPTION OF SYMBOLS 1, 2 Support member 3 Horizontal axis 4 Governor rope 5 Overspeed detector 10 Sheave 11 Rim 12 Hub 13 Spoke 14 Rope groove 15 Fitting groove (joint structure)
20 Rotating body for operation test 21 Rim 22 Hub 23 Spoke 24 Fitting tooth (bonding structure)
25 鍔 30 Blocking member

Claims (3)

A horizontal axis extending in the horizontal direction, a sheave attached to the horizontal axis, a governor rope hung around the sheave while being connected to a car, and an operation test rotation attached to the horizontal axis A body, a coupling structure for detachably coupling the sheave and the motion test rotor, and an overspeed detection device for detecting that the rotational speed of the motion test rotor has reached a specified value or more. In an elevator governor that stops the car when it is detected by the overspeed detection device that the rotational speed of the rotating body for operation test has reached a specified value or more,
One of the sheave and the rotating body for operation test is mounted so as to be movable in the axial direction with respect to the horizontal axis,
The coupling structure is a state in which the sheave and the operation test rotating body are fitted together in the axial direction so as to be integrally rotatable, and the sheave and the operation test rotating body are fitted together. The elevator governor further comprises a blocking member that is detachably attached to the horizontal shaft and prevents movement of one of the sheave and the rotating body for operation test away from the other. The elevator governor according to claim 1,
The sheave includes a rim around which the governor rope is hung.
The operation test rotating body includes a rim located coaxially with the sheave rim,
The coupling structure is provided so as to extend in the axial direction on one of an inner peripheral surface of the rim of the sheave and an outer peripheral surface of the rim of the operation test rotating body, and is equiangular over the entire circumference of the rim. A plurality of fitting grooves positioned at intervals, and provided on the other of the inner peripheral surface of the rim of the sheave and the outer peripheral surface of the rim of the rotating body for operation test, and each of the plurality of fitting grooves A plurality of fitting teeth inserted and fitted in the axial direction, and the sheave and the operation test rotating body can be integrally rotated by the plurality of fitting grooves and the plurality of fitting teeth. The elevator governor is fitted in the axial direction. The elevator governor according to claim 1 or 2,
The blocking member is an arc-shaped elastic body having a center angle smaller than 180 ° and a diameter dimension set shorter than the diameter dimension of the horizontal axis, An elevator governor characterized by being positioned by tightening an outer peripheral surface of the horizontal axis in a spread state.