JP2004043140A - Safety device of elevator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a safety device of an elevator with excellent productivity. <P>SOLUTION: A first lift rod lever 8, a first connecting rod lever 9 and a rope grip member 10 for speed regulator are constructed by a first bending member 15 of an approximately U shape. A second lift rod lever 11 and a second connecting rod 12 are constructed by a second bending member 18 of the approximately U shape. A first shaft 6 on which the first bending member 15 is rotatably mounted is fixed to a first support base 16 of the U shape, and a second shaft 7 on which the second bending member 18 is rotatably mounted is fixed to a second support base 17 respectively. The first support base 16 and the second support base 17 are fixed to the undersurface of a lower beam member 1. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an elevator safety device, and more particularly to an elevator safety device that operates two left and right emergency stop devices via a safety link by operating force of a governor.
[0002]
[Prior art]
Generally, as shown in FIG. 5, a safety device for this type of elevator is provided with a safety device provided on a lower beam 102 of the car 100 via a governor rope 101 by detecting an abnormal speed of the car 100. A known device includes a governor 104 that applies an operating force to the link 103 and two right and left safety devices 105 and 105A that operate via the safety link 103 by the operating force of the governor 104. . In the elevator safety device, for example, when the main rope 106 for suspending the car 100 is cut off for some reason, and the car 100 is guided by the guide rails 107 and 107A and rapidly descends, the control is performed. By operating the safety link 103 by operating the speed governor 104 and restraining the governor rope 101, the guide rails 107 and 107A are sandwiched by the wedge mechanisms in the emergency stop devices 105 and 105A. The car 100 is stopped safely.
[0003]
As the safety link 103, the one described in JP-A-2001-122551 is known. As shown in FIGS. 6A and 6B, a safety link 103 described in Japanese Patent Application Laid-Open No. 2001-122551 includes a pair of beam members disposed at an interval on the lower surface of the car 100. The lower beam 102 composed of 102A and 102B is attached. That is, in the safety link 103 shown in FIGS. 6A and 6B, the first shaft 108 rotatably disposed on one of the safety devices 105 of the pair of beam members 102A and 102B, A second shaft 109 rotatably disposed on the other safety device 105A side of the beam members 102A and 102B, a first lift rod lever 110 provided on the first shaft 108, and a first shaft 108 provided on the first shaft 108 A first connecting rod lever 111, a governor rope gripping member 112 provided on the first shaft 108 for grasping the governor rope 101, a carrier lever 113 provided on the first shaft 108, and a second shaft 109. , A second connecting rod lever 115 provided on the second shaft 109, a limit switch lever 116, one end of the first connecting rod lever 111, and the other. To second connecting rod lever 115, and a connecting rod 117 which is pivotally mounted, respectively.
[0004]
When the governor rope gripping member 112 is pulled up and the first shaft 108 rotates in the direction of the arrow P2, the lift rod 105-1 of the safety device 105 is pulled up by the first lift rod lever 110, and the emergency stop is performed. The guide rail 107 is held by the wedge mechanism 105-2 of the device 105, the carrier spring 118 is compressed by the carrier lever 113, and the first connecting rod lever 111, the connecting rod 117, and the second connecting rod lever 115 The two shafts 109 are rotated in the arrow Q2 direction. When the second shaft 109 is rotated in the direction of arrow Q2, the lift rod 105A-1 of the safety device 105A is pulled up by the second lift rod lever 114, and the wedge mechanism 105A-2 of the safety device 105A guides the guide rail. 107A is held, and the limit switch 119 is turned off by the limit switch lever 116 to cut off the power.
[0005]
[Problems to be solved by the invention]
However, in the elevator safety device disclosed in Japanese Patent Application Laid-Open No. 2001-122551, first, a pair of beam members 102A and 102B arranged at an interval is required, and a safety link is required. There is a problem that the degree of freedom in the layout design of the lower beam member below the car for mounting the 103 is low, and the lower beam member cannot be reduced. The four parts 110, the first connecting rod lever 111, the governor rope gripping member 112, and the carrier lever 113 are separately made, and are separately provided on the first shaft 108. However, there is a problem that productivity is poor.
[0006]
SUMMARY OF THE INVENTION An object of the present invention is to provide an elevator safety device having a high degree of freedom in design and excellent productivity in view of the above problems.
[0007]
[Means for Solving the Problems]
The above object is to provide a governor that detects an abnormal speed of a car and applies an operating force to a safety link provided on a lower beam member of the car through a governor rope, and an operating force by the governor. A first shaft, which is rotatably disposed on one safety device side of the lower beam member, the first shaft including two left and right safety devices that operate via safety links. A second shaft rotatably arranged on the other safety device side of the lower beam member, a first lift rod lever, a first connecting rod lever, a governor rope gripping member, Having at least a lift rod lever, a second connecting rod lever, and a connecting rod having one end rotatably provided on the first connecting rod lever and the other end rotatably provided on the second connecting rod lever. Safety equipment The first lift rod lever, the first connecting rod lever, and the governor rope gripping member are configured by a substantially U-shaped first bending member, and at least the second lift rod lever And the second connecting rod lever are constituted by a substantially U-shaped second bending member, and the first bending member is rotatably attached to the first shaft, and the first shaft is substantially U-shaped. The second bending member is fixed to the first support base having a U-shape, and the second bending member is rotatably attached to the second shaft, and the second shaft is attached to the substantially U-shaped second support base. This can be achieved by fixing the first support base and the second support base to the lower beam member.
[0008]
According to this configuration, the first lift rod lever, the first connecting rod lever, and the governor rope gripping member are integrally formed by the first bending member formed by bending the U-shaped into a substantially U-shape. Can be.
[0009]
A first support base to which a first shaft to which the first bending member is rotatably mounted is fixed; and a second support base to which a second shaft to which the second bending member is rotatably mounted is fixed. Is fixed to one lower beam member, so that the first bending member and the second bending member can be rotatably attached to one lower beam member.
[0010]
BEST MODE FOR CARRYING OUT THE INVENTION
An embodiment of the present invention will be described below with reference to FIGS. 1 (a) and 1 (b).
[0011]
1 (a) and 1 (b), a safety device for an elevator is installed on one lower beam member 1 of a car. The safety device of the elevator operates the safety link 3 by the operation of the governor (not shown) and the restraint of the governor rope 2 by the wedge mechanism of the safety devices 4, 4A. By holding the guide rails 5 and 5A, a car (not shown) can be safely stopped.
[0012]
The safety link 3 includes a first shaft 6 rotatably disposed on one emergency stop device 4 side of one lower beam member 1 and another emergency stop device 4A side on one lower beam member 1. A second shaft 7, a first lift rod lever 8, a first connecting rod lever 9, a speed governor rope gripping member 10, and a second lift rod lever 11. , A second connecting rod lever 12, a limit switch lever 13, and a connecting rod 14 having one end rotatably provided on the first connecting rod lever 9 and the other end rotatably provided on the second connecting rod lever 12, respectively. I have.
[0013]
As shown in FIG. 2, the first lift rod lever 8 and the governor rope gripping member 10 are formed by bending a single steel material into a substantially U-shape to form a first bending member 15 formed by bending a first steel member. The first bending member 15 has a substantially U-shaped one end serving as a first lift rod lever 8, and the first bending member 15 has a substantially U-shaped other end. It is formed by using the rope gripping member 10. As shown in FIG. 2, the first connecting rod lever 9 is formed integrally with the first bending member 15.
[0014]
As shown in FIG. 2, the first support base 16 is formed by bending a single steel material into a substantially U-shape. The first shaft 6 is fixed to the substantially U-shaped one end 16A and the other end 16B of the first support base 16 by a stopper 26. As shown in FIGS. 1A and 1B, the first support base 16 is fixed to the lower beam member 1 by a fixing bolt or the like.
[0015]
The second shaft 7 is fixed to the second support base 17, as shown in FIGS. 1A and 1B. Like the first support base 16, the second support base 17 is formed by bending a single steel material into a substantially U-shape. Like the first support base 16, the second support base 17 is fixed to the lower surface of the lower beam member 1 with a fixing bolt or the like, as shown in FIGS. 1A and 1B. A second bending member 18 formed by bending a single steel material into a substantially U-shape is rotatably provided on the second shaft 7. The second lift rod lever 11 is formed by using a substantially U-shaped one end of the second bending member 18 as the second lift rod lever 11. The second connecting rod lever 12 is formed integrally with the second bending member 18. As shown in FIGS. 1A and 1B, a limit switch lever 13 and a power cutoff limit switch 19 are provided on the second bending member 18 side.
[0016]
As shown in FIGS. 1A and 1B, the connecting rod 14 is fitted with a carrier spring 20 for preventing malfunction. One end of the carrier spring 20 is in contact with a holding member 21 made of steel, and the other end is fixed to the connecting rod 14. When the connecting rod 14 moves in the direction of the arrow X, the carrier spring 20 is pushed toward the holding member 21 made of steel, and the carrier spring 20 is compressed. The holding body 21 is fixed to the lower beam member 1 by a fixing bolt or the like.
[0017]
The tip of the first lift rod lever 8 is pivotally attached to a steel mounting plate 23 provided at the upper end of the lift rod 22 of the safety device 4. The tip of the governor rope gripping member 10 is pivotally attached to a steel mounting plate 24 provided on the governor rope 2. The tip of the second connecting rod lever 12 is pivotally attached to a steel mounting plate 25 provided at the upper end of the lift rod 22A of the safety device 4A.
[0018]
According to the above configuration, when the car is guided by the guide rails 5 and 5A and rapidly descends, for example, when the main rope suspending the car is cut, the governor operates to operate the governor rope 2. Is bound. When the governor rope 2 is constrained, the governor rope gripping member 10 is pulled upward (in the direction of arrow Y) and adjusted with the first lift rod lever 8 and the first connecting rod lever 9. The first bending member 15 integrally formed with the speed rope gripping member 10 rotates about the first shaft 6 in the direction of the arrow P1 and becomes as shown by the dashed line in FIG.
[0019]
When the first bending member 15 rotates, the lift rod 22 is pulled up by the first lift rod lever 8, the wedge mechanism of the safety device 4 works, and the guide rail 5 is clamped. The connecting rod 14 is moved in the direction of arrow X by the connecting rod lever 9 of the second bending rod 18 in which the second lift rod lever 11 and the second connecting rod lever 12 are integrally formed. The lift rod 22A is pulled up by the second lift rod lever 11 by rotating about the axis 7 in the direction of the arrow Q1, and the wedge mechanism of the safety device 4A works to hold the guide rail 5A. When the connecting rod 14 is moved in the arrow X direction by the first connecting rod lever 9, the carrier spring 20 is compressed, and the limit switch 19 is turned off by the limit switch lever 13 to cut off the power.
[0020]
When the restraint state of the governor rope 2 is released, the connecting rod 14 moves in the direction opposite to the arrow X direction, and the first bending member 15 moves around the first shaft 6 in the direction opposite to the arrow P1 direction. Direction, and the second bending member 18 rotates about the second shaft 7 in the direction opposite to the arrow Q1 direction, so that the lift rod 22 is moved by the first lift rod lever 8, The lift rods 22A are respectively pushed down by the second lift rod levers 11, and the gripping states of the guide rails 5, 5A by the wedge mechanisms of the safety devices 4, 4A are released. The movement of the connecting rod 14 in the direction opposite to the arrow X direction is reliably performed by the carrier spring 20.
[0021]
In the above-described embodiment, the first lift rod lever 8, the first connecting rod lever 9, and the governor rope gripping member 10 are formed by punching or cutting one piece of steel material and then bending the steel material into a substantially U-shape. The formed first bending member 15 can be easily formed without welding work, and productivity is improved.
[0022]
Also, by simply attaching the first bending member 15 to the first shaft 6, the three parts of the first lift rod lever 8, the first connecting rod lever 9, and the speed governor rope gripping member 10 are Since it is possible to obtain a state in which it is mounted so as to be rotatable about the shaft 6 in the direction of the arrow P1, the mounting operation is simplified and the productivity is improved.
[0023]
Further, the second lift rod lever 11, the second connecting rod lever 12, and the limit switch lever 13 are also formed by bending a substantially single U-shaped piece of steel material and then bending it into a substantially U-shape. The member 18 can be easily manufactured without welding work, and the productivity is improved.
[0024]
In order to attach the safety link 3 to the lower surface of the car, a first bending in which the first lift rod lever 8, the first connecting rod lever 9, and the governor rope gripping member 10 are integrally formed. The first shaft 6 to which the member 15 is rotatably attached is fixed to the first support base 16, and the first support base 16 is fixed to the lower surface of the lower beam member 1 by a fixing bolt or the like. The second shaft 7 on which the second bending member 18 is rotatably mounted is fixed to the second support base 17, and the second support base 17 is fixed to the lower surface of the lower beam member 1 with fixing bolts or the like. Thus, unlike the related art, there is no need for a pair of beam members arranged at intervals, and only one lower beam member 1 is required. Therefore, since there is only one lower beam member 1 for attaching the safety link 3 below the car, the layout design of the lower beam member 1 below the car can be freely performed. The material can be reduced.
[0025]
FIG. 3 is an enlarged perspective view of a main part of another embodiment 1 of the present invention. 3, the same reference numerals as those in FIG. 2 represent the same contents. The first bending member 150A of FIG. 3 integrally forms the first lift rod lever 8 and the speed governor rope gripping member 10 by appropriately cutting one sheet of steel and then bending the steel into a substantially U-shape. A first connecting rod lever 90 separately manufactured is attached to the first bending member 150A by a fixing bolt or the like. According to the first bending member 150A of FIG. 3, the yield of the material of the first bending member 150A can be improved.
[0026]
FIG. 4 is an enlarged perspective view showing a main part of another embodiment 2 of the present invention. 4, the same reference numerals as those in FIG. 2 denote the same contents. In FIG. 4, instead of the first bending member 15 of FIG. 2, a first bending member 150B formed by appropriately punching or cutting a sheet of steel and then bending it into a substantially U-shape is provided. The first lift rod lever 80 separately manufactured at the substantially U-shaped one end 150B-1 of one bending member 150B, and separately manufactured at the substantially U-shaped other end 150B-2 of the first bending member 150B. The governor rope gripping members 10A are detachably attached to each other, and the first connecting rod lever 90 separately manufactured is detachably attached to the first bending member 150B by a fixing bolt or the like. According to the first bending member 150B of FIG. 4, the yield of the material of the first bending member 150B can be further improved than that of the first bending member 150A of FIG. In addition, by forming the governor rope gripping member 10A into a bent shape as shown in FIG. 4, the degree of freedom in the layout design of the governor in the elevator hoistway can be further improved.
[0027]
Further, in any of the above embodiments, the first support base 16 and the second support base 17 have the same structure, so that parts can be shared and productivity can be improved. Moreover, the second bending member 18 has the same structure as any one of the first bending member 15, the first bending member 150A, and the first bending member 150B, so that parts can be shared. The productivity is improved, and in FIG. 1, an elevator in which the governor rope 2 is arranged from the left side to the right side, that is, arranged on the side where the safety gear 4A and the guide rail 5A are arranged. Can also be dealt with, and the degree of freedom in design can be further improved.
[0028]
【The invention's effect】
As described above, according to the present invention, at least the first lift rod lever, the first connecting rod lever, and the governor rope gripping member are configured by the substantially U-shaped first bending member, and At least the second lift rod lever and the second connecting rod lever are constituted by a substantially U-shaped second bending member, and the first shaft to which the first bending member is rotatably attached is substantially U-shaped. A second shaft to which the second bending member is rotatably mounted is fixed to a first support base having a U-shape and a second support base having a substantially U-shape. Since the base and the second support base are fixed to one lower beam member, an elevator safety device which has a high degree of freedom in design and can improve productivity is obtained.
[Brief description of the drawings]
1A and 1B show an embodiment of a safety device for an elevator according to the present invention, wherein FIG. 1A is a detailed plan view of a main part, and FIG.
FIG. 2 shows an embodiment of the present invention and is an enlarged perspective view of a main part.
FIG. 3 is an enlarged perspective view showing a main part of another embodiment 1 of the present invention.
FIG. 4 is an enlarged perspective view showing a main part of another embodiment 2 of the present invention.
FIG. 5 is an overall schematic explanatory view showing an example of a conventional elevator safety device.
6A and 6B show an example of a conventional elevator safety device, in which FIG. 6A is a detailed plan view of a main part, and FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Lower beam member 2 Governor rope 3 Safety link 4 Emergency stop device 4A Emergency stop device 5 Guide rail 5A Guide rail 6 First shaft 7 Second shaft 8 First lift rod lever 9 First connecting rod lever 10 Speed rope gripping member 11 Second lift rod lever 12 Second connecting rod lever 13 Limit switch lever 14 Connecting rod 15 First bending member 16 First support base 17 Second support base 18 Second bending member 19 Limit switch 20 Carrier spring 21 Holder 22 Lift rod 23 Mounting plate 24 Mounting plate 25 Mounting plate 26 Detachment prevention

Claims (4)

A speed governor that applies an operating force to the safety link provided on the lower beam member of the car through a speed governor rope by detecting the abnormal speed of the car, and the safety link is operated by the operating force of this governor A first shaft rotatably disposed on one emergency stop device side of the lower beam member; and A second shaft rotatably disposed on the other safety device side, a first lift rod lever, a first connecting rod lever, a governor rope gripping member, and a second lift rod lever And, a second connecting rod lever, and an elevator safety device having a connecting rod having one end provided on the first connecting rod lever and the other end provided rotatably on the second connecting rod lever, respectively.
At least the first lift rod lever, the first connecting rod lever, and the governor rope gripping member are constituted by a substantially U-shaped first bending member (15), and at least the second lift The rod lever and the second connecting rod lever are constituted by a substantially U-shaped second bending member, and the first bending member (15) is rotatably attached to the first shaft, and One shaft is fixed to a substantially U-shaped first support base, and the second bending member is rotatably attached to the second shaft, and the second shaft is substantially U-shaped. An elevator safety device, wherein the safety device is fixed to a second support base, and the first support base and the second support base are fixed to the lower beam member. The safety device for an elevator according to claim 1, wherein the first bending member (15) is formed by appropriately cutting a sheet of steel and then bending the steel into a substantially U-shape. In place of the first bending member (15), the first lift rod lever and the governor rope gripping member are formed by appropriately cutting a piece of steel and then bending the steel material into a substantially U-shape. And a first connecting rod lever formed separately from the first bending member (150A) is attached to the first bending member (150A). The safety device for an elevator according to claim 1, wherein In place of the first bending member (15), a first bending member (150B) formed by appropriately cutting one sheet of steel and then bending the steel material into a substantially U-shape is provided. A first lift rod lever formed separately from the first bending member (150B) is provided at one end of the substantially U-shape of the (150B), and at the other end of the substantially U-shape of the first bending member (150B). A governor rope gripping member separately formed from the first bending member (150B) is detachably attached, and a first connecting rod lever separately formed from the first bending member (150B) is mounted. 2. The elevator safety device according to claim 1, wherein:

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