JP2004345803A - Emergency stop device of elevator, emergency stop return device and emergency stop return method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To realize a small-sized emergency stop device, incorporated in an elevator. <P>SOLUTION: In this emergency stop device of an elevator, the upper part of the elevator 1 is provided with a reaction force generator 3 moved up and down by utilizing the acceleration of gravity with the drop of the elevator, the lifting position displaced by the reaction force generator is transmitted to a link mechanism 11, a wedge pull-up rod 4 connected to the link mechanism is pulled up to lift a wedge 7 of an emergency stop mechanism 5, and the elevator is stopped in an emergency by utilizing the wedge effect. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
TECHNICAL FIELD The present invention relates to an emergency stop device, an emergency stop return device, and an emergency stop return method for an elevating body that makes an emergency stop of the elevating body when an elevator rope breaks.
[0002]
[Prior art]
In an elevator system, a car (hereinafter, referred to as a main elevator) is moved up and down by a vertical movement of a main rope due to a rotation of a hoist, and a hanging rope is hung on a bottom of the main elevator, and the main elevator is lifted. There is a lifting and lowering operation of a compensating rope steady rest device (hereinafter referred to as a sub-elevating body) that moves up and down in conjunction with the elevating operation. Required.
[0003]
As a safety measure using the main hoist, a fixed device for detecting overspeed such as a governor (governor) is installed, and when the speed of the main hoist exceeds a specified speed exceeding the rated speed, the input to the motor is cut off. While the electromagnetic brake is activated, the fixed device for overspeed detection is connected to the main elevating body with a governor rope separate from the main rope, and the emergency stop device is operated via a link mechanism installed on the upper part of the main elevating body Safety measures are in place.
[0004]
Therefore, in an emergency stop operation due to a general failure, it is possible to stop the main elevating body by activating the safety device provided on the main elevating body itself.
[0005]
On the other hand, the safety measures by the sub-elevator are such that the sub-elevator is suspended from the main elevator via the hanging rope as described above, and the sub-elevator moves up and down in conjunction with the elevating operation of the main elevator. However, if the hanging rope suspending the subordinate elevating body is broken, the subordinate elevating body falls. The fall of the sub-elevation body due to the breakage of the suspension rope is an abnormality that cannot depend on the safety device of the main elevating body.
[0006]
Therefore, measures to prevent breakage of the suspending rope by using an excessive safety factor in the strength design of the suspending rope, or to design the emphasis on safety measures for peripheral equipment, assuming that the subordinate elevating body is destroyed by falling Has been taken.
[0007]
[Problems to be solved by the invention]
However, of the above-mentioned conventional techniques, in the former safety measure using the main elevating body, a large installation space for an overspeed detection fixed device is required, and the volume of the hoistway top and the machine room is increased. There is.
[0008]
On the other hand, the latter safety measures using the lifting / lowering body adopt methods such as increasing the safety factor of the hanging rope or placing emphasis on the safety measures of other peripheral devices when falling. When installing the equipment, it is necessary to equip a relatively large fixed part in the hoistway, and since only one sub-hoist is installed in one hoistway, etc. It is not possible to develop an overspeed detection type safety device for a subordinate elevating body that is used for a typical safety device. Therefore, it is desirable that the safety device of the secondary hoist is independently operated, if possible, only with various components including the main hoist currently incorporated in the hoistway.
[0009]
The present invention has been made in view of the above circumstances, and adopts an acceleration detection method instead of the conventional overspeed detection method, and can be incorporated into a lifting body by miniaturization, and when the rope breaks, the lifting and lowering is performed purely according to a mechanical operation sequence. An object of the present invention is to provide an emergency stop device for an elevating body that performs an emergency stop of the body.
[0010]
Another object of the present invention is to provide an emergency stop return device and an emergency stop return method for an elevator that return an emergency stopped elevator to a movable state by effectively utilizing existing facilities.
[0011]
[Means for Solving the Problems]
(1) In order to solve the above-mentioned problem, an emergency stop device for an elevating body according to the present invention is attached to at least one side of the elevating body, and has an upper side that surrounds both sides of a guide rail that guides the elevating body. It has an air gap with a shape narrowed down in the direction, an emergency stop mechanism in which a wedge is installed in this air gap, and is installed on an elevating body, it is always located at a predetermined lowered position, and when the elevating body falls A configuration is provided in which a reaction force generator having a weight displaced to an ascending position in accordance with an increase in the acceleration and a wedge pulling member that pulls up the wedge as the weight rises.
[0012]
Since the present invention is configured as described above, the weight of the reaction force generator is displaced to the ascending position due to an increase in acceleration due to the fall when the elevating body falls, so that the wedge pulling member connected to this weight is provided. Since the wedge is pulled up through, the wedge effect can be easily exerted, and the elevating body can be stopped. Therefore, since it is only necessary to add a reaction force generator to the conventional emergency stop mechanism, it can be built into the elevating body in a small size, and even if the apparent gravity in the elevating body decreases due to the fall, the fall can be reliably performed. It is possible to detect and stop the elevating body.
[0013]
The same effect can be obtained even when a swing link that is swingably supported by the reaction force generator is provided between the reaction force generator and the wedge pulling member.
[0014]
Further, when the emergency stop mechanism is provided on both sides of the elevating body, it is possible to raise the wedge pulling members on both sides by combining two swing links.
[0015]
Further, a linear motion guide body for guiding a weight constituting the reaction force generator so as to linearly move, and a rod suspension member attached to the reaction force generator and suspending a wedge pulling member are provided. May be.
[0016]
Further, the present invention provides, when the emergency stop mechanism is provided on both sides of the lifting / lowering body, a linear motion guide body that guides the weight constituting the reaction force generator so as to linearly move, and is disposed on both sides of the lifting / lowering body. The wedge pull-up members connected to the wedge pull-up members connected to the wedges of the emergency stop mechanism, respectively, and simultaneously pulling the wedge pull-up members arranged on both sides of the lifting / lowering body in accordance with the displacement of the lift position of the weight constituting the reaction force generator. By providing a lifting rod suspension member, it is possible to simultaneously apply the wedges of the emergency stop mechanisms arranged on both sides of the lifting / lowering body, and apply a large braking force to the falling lifting / lowering body to stop it. .
[0017]
Furthermore, if a rotary damper or a linear motion damper is provided on the pivot portion of the swing link or the linear motion guide, the influence of the reaction force generator that moves up and down instantaneously can be removed, and the rope It is possible to prevent malfunction due to sudden changes other than breakage.
[0018]
(2) The elevating body emergency stop returning device according to the present invention, which returns the elevating body emergency-stopped by the emergency stop device to a movable state, is slidably provided with the guide rail held at the bottom of the hoistway. By providing a hook and a winding drum connected to a hoisting machine installed on the top of the hoistway and having a rope wound thereon, the hoisting machine is rotated by the rotating operation of the hoisting machine at the time of emergency stop of the hoisting body. It is possible to lower the tip of the rope from the take-up drum and attach it to the hook, wind up the rope, hook the hook on the elevating body and raise it, and release the wedge of the emergency stop mechanism. It is possible to easily return the subordinate elevating body using the equipment.
[0019]
(3) Further, according to the present invention, a main elevating body that moves up and down in a hoistway by a rotating operation of a hoist, and is provided below the main elevating body, and moves up and down in conjunction with the elevating operation of the main elevating body. A lifting device that has a compensating rope elevating member that has a function of preventing the compensating rope from moving, and wherein the elevating member that has been emergency-stopped by the emergency stop device according to any one of claims 1 to 7 returns to a movable state. The emergency stop return method of the body,
A compensating rope is provided via an automatic opening / closing hook at a predetermined length from the bottom of the main elevating body, and the automatic opening / closing hook is provided with a steady ring formed at the center of the sub-elevating body while lowering the main elevating body. After passing through, the automatic opening / closing hook is automatically opened and pushed up so as to hold it from the lower side of the subordinate elevating body, so that the subordinate elevating body is forcibly raised and the emergency stop device is released. It is possible to easily return the subordinate elevating body using the above-mentioned equipment.
[0020]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0021]
(First Embodiment)
1 and 2 are views for explaining a first embodiment of an emergency stop device for a lifting body according to the present invention. FIG. 1 is a configuration diagram of an elevator system including an emergency stop device that employs an acceleration detection method, and FIG. 2 is a diagram illustrating an emergency stop mechanism that constitutes the emergency stop device.
[0022]
In these figures, reference numeral 1 denotes a main elevator which transports an elevator user to a destination floor, and 2 denotes a guide rail which is installed near both sides of the main elevator 1 and in a vertical direction of a hoistway. Guide devices (not shown) are provided on both sides of the body 1 to guide the main elevating body 1 in the vertical direction while sliding on the guide rails 2.
[0023]
The main elevator 1 corresponds to a car of an elevator, but the emergency stop device of the elevator elevator according to the present invention is similarly applied to a secondary elevator which is a rope sway-preventing device of a main rope or a compensating rope. Since it is possible, hereinafter, the main lifting body and the secondary lifting body are simply referred to as the lifting body 1.
[0024]
Specifically, in this emergency stop device, a reaction force generator 3 that generates a reaction force according to the acceleration due to the falling of the elevating body 1 is attached to the upper part of the elevating body 1. The reaction force generator 3 includes a weight 3a having a required weight and an elastic body 3b supporting the weight 3a installed above the elevating body 1. The elastic body 3b is not particularly limited as long as it is not only a general spring but also a member having a function or property of generating a reaction force according to the acceleration due to the falling of the elevating body 1.
[0025]
Further, as an emergency stop device, an upper end portion of a wedge pulling rod 4 is connected to a weight 3a constituting the reaction force generator 3, and an emergency stop mechanism 5 shown in FIG. I have. The emergency stop mechanism 5 is formed with, for example, a triangular or trapezoidal gap 6a in which the inner portion surrounding the guide rail 2 is narrowed down from the lower side toward the upper side, and the wall surface of the gap 6a is vertically oriented. An emergency stop outer body 6 having a guide groove 6b formed therein, a wedge 7 provided between a gap 6a of the emergency stop outer body 6 and each surface of the guide rail 2, and a projection protruding outside the wedge 7. And a linear motion unit 8 for guiding the wedge 7 along the guide groove 6b. The tops of both wedges 7, 7 are connected to the respective lower ends of the wedge pulling rods 4 formed, for example, in an inverted concave shape.
[0026]
Next, the operation of the safety device described above will be described.
[0027]
At normal time, the weight 3a is applied with, for example, normal gravity of 1 G to the elastic body 3b. As a result, the weight 3a is at the steady position A against the elastic force of the elastic body 3b, and accordingly, the wedge 7 connected to the lower end of the wedge pull-up rod 4 connected to the reaction force generator 3. Is in a state where it can freely move below the gap 6a of the emergency stop outer body 6 as shown on the left side of the guide rail 2 shown in FIG. That is, the wedge pulling lot 4 is located at the normal lowered position (brake release position) by mechanical connection with the reaction force generator 3, and accordingly, the wedge 7 is also located at the lowered position (brake release position). .
[0028]
When the elevating body 1 starts to fall, the apparent gravity of the elevating body 1 sharply decreases, and the load against the reaction force of the elastic body 3b on the weight 3a also greatly decreases. As a result, the elastic body 3b raises the weight 3a to the position B, and the wedge 7 is pulled up via the wedge pulling rod 4 connected to the reaction force generator 3, as shown on the right side of the guide rail 2 in FIG. It comes into contact with the guide rail 2 and further rises due to frictional resistance. Therefore, the wedge 7 exhibits a wedge effect between the guide rail 2 and the emergency stop outer body 6, and the wedges 7, 7 fasten the guide rail 2 from both sides, so that the elevating body 1 decelerates and stops.
[0029]
Even if the gravity inside the elevating body 1 is recovered by this stop, the wedge 7 is fitted between the guide rails 2, so that the position of the weight 3 a holds B, and the weight 3 a is positive. Unless a proper return operation is performed, the elevating body 1 remains stopped without further dropping.
[0030]
Therefore, according to the above-described embodiment, when the elevating body 1 falls, the acceleration is detected using the reaction force generator 3 including the weight 3a and the elastic body 3b, and the emergency stop mechanism 5 is operated. By installing the small reaction force generator 3 on the elevating body 1 and using the same emergency stop mechanism 5 as in the past, the elevating body 1 is reliably stopped when the rope breaks, and the elevating body 1 is prevented from falling. be able to.
[0031]
(Second embodiment)
FIG. 3 is a configuration diagram showing a second embodiment of the elevating device emergency stop device according to the present invention. Since the emergency stop mechanism 5 in this emergency stop device has the same configuration as that of FIG. 2, the detailed configuration of the emergency stop mechanism 5 will be described below with reference to FIG. The parts will be described.
[0032]
In the second embodiment, a reaction force generator 3 that generates a reaction force according to the acceleration due to the drop of the elevating body 1 is attached to the elevating body 1 as described above. The reaction force generator 3 includes, for example, a weight 3a and an elastic body 3b.
[0033]
A link mechanism 11 such as a link type transmission mechanism shown in FIG. 12 is attached to the weight 3a. The link mechanism 11 has a link support 11a installed on the opposite side of the reaction force generator 3 from the wedge pull-up rod 4, one end of the link support 11a, and the body of the link 3a. The swing link 11b is pivotally supported as much as possible, and the other end of the swing link 11b is connected to the upper end of the wedge pull-up rod 4. The wedge pull-up rod 4 is formed so as to be bent at a required position.
[0034]
Next, the operation of the safety device described above will be described.
[0035]
Normally, the weight 3a is at a steady position against the elastic force of the elastic body 3b, and accordingly, the lower end of the wedge pulling rod 4 at the other end of the swing link 11b rotatably provided on the weight 3a. The wedge 7 connected to the portion is set in a state in which it can float below the gap 6a of the emergency stop outer body 6 as shown on the left side of the guide rail 2 shown in FIG. That is, the wedge pulling lot 4 is located at the normal lowered position (brake release position), and accordingly, the wedge 7 is also located at the lowered position (brake release position) (see the upper part of FIG. 3).
[0036]
However, when the elevating body 1 starts to fall, the apparent gravity of the elevating body 1 rapidly decreases, and the load against the reaction force of the elastic body 3b on the weight 3a also greatly decreases. As a result, the weight 3a rises against the reaction force of the elastic body 3b. At this time, one end of the swing link 11b is pivotally supported by the link support 11a. The wedge pulling lot 4 rises because it rises and acts to pull up the wedge pulling lot 4.
[0037]
When the wedge pulling lot 4 rises, the wedge 7 comes into contact with the guide rail 2 as shown on the right side of the guide rail 2 in FIG. 2 and further rises due to frictional resistance. 1 is decelerated and stopped (see the lower part of FIG. 3).
[0038]
Therefore, according to the above-described embodiment, by installing the reaction force generator 3 and the link mechanism 11 on the elevating body 1 and using the conventional emergency stop mechanism 5, the reaction force is generated when the rope is broken. By using the acceleration detection method by the generator 3, the lifting body 1 can be reliably stopped, and the falling of the lifting body 1 can be prevented.
[0039]
In the above-described embodiment, the example in which the emergency stop mechanism 5 is provided on one side of the elevating body 1 has been described. However, for example, a configuration in which the emergency stop mechanism 5 is provided on each side of the elevating body 1 may be employed. The emergency stop mechanism 5 can be operated under the same mechanism.
[0040]
FIG. 4 shows an example in which emergency stop mechanisms 5 are provided on both sides of the elevating body 1.
[0041]
In this emergency stop mechanism 5, a first link support 11aa is fixed to an upper central portion of the elevating body 1, and a reaction force generator 3 and a second link are provided on both sides of the first link support 11aa. A support 11ab is provided, and a first swing link 11ba and a second swing link 11bb are attached to the first link support 11aa and the second link support 11ab such that one end thereof can be pivotally supported. ing.
[0042]
The first swing link 11ba is attached to the weight 3a so as to be pivotable together with the first link support 11aa, and has an end opposite to the first link support 11aa on the right side in the drawing. The illustrated wedge pulling lot 4 is connected. On the other hand, the second swing link 11bb has one end pivotally supported by the second link support 11ab, and the other end connected to the wedge pulling lot 4 shown on the left side in the figure. One end of the first swing link 11ba and one end of the second swing link 11bb are pivotally connected to each other, and when the weight 3a rises with the drop of the elevating body 1, the first swing link 11ba. Pushes down one end of the second swinging link 11bb, thereby causing the wedge pulling lot 4 connecting side end of the second swinging link 11bb to be displaced upward through the support 11ab of the second link, and as a result, Then, the wedge pulling lot 4 shown on the left side of the drawing is pulled up.
[0043]
In such an emergency stop device, the weight 3a normally exists at a steady position against the elastic force of the elastic body 3b, and accordingly, the first swinging mechanism rotatably provided on the weight 3a. The moving link 11ba is set at a predetermined fixed position, and the connected second swing link 11bb is also set at the fixed position. When the first swing link 11ba and the second swing link 11bb are at the fixed positions, the wedge pulling lots 4 connected to the swing links 11ba, 11bb are also at the normal lowered position (brake release position). The wedges 7 on both sides are also located at the lowered position (brake release position) (see the upper part of FIG. 4).
[0044]
On the other hand, when the elevating body 1 starts to fall due to breakage of the rope or the like, the apparent gravity of the elevating body 1 sharply decreases, and the load against the reaction force of the elastic body 3b on the weight 3a also greatly decreases. As a result, the weight 3a rises against the reaction force of the elastic body 3b. At this time, the wedge pulling lot side end of the first swing link 11ba rises, and the end opposite to the wedge pulling lot side. The part descends. As a result, the wedge pulling lot 4 on the right side shown in the lower part of FIG. 4 rises.
[0045]
Also, when the end of the first swing link 11ba opposite to the wedge pulling lot side is lowered, the second swing link 11bb connected thereto is pushed down, and the second swing link 11bb is moved through the second swing link 11bb. The wedge pulling lot 4 on the left side of the drawing shown in the lower part of FIG. That is, as the weight 3a rises, the wedge pulling lots 4 on both sides rise and lift the wedges 7, respectively, so that each wedge 7 comes into contact with the guide rail 2 as shown on the right side of the guide rail 2 in FIG. As described above, the guide rail 2 is tightened from both sides, and the elevating body 1 is decelerated and stopped.
[0046]
Therefore, according to the above-described embodiment, one reaction force generator that employs an acceleration detection method when the rope breaks is provided by simply adding another pair of the link support and the swing link shown in FIG. The emergency stop mechanism 5 on both sides can be operated by using 3, so that the elevating body 1 can be stopped more reliably and the elevating body 1 can be prevented from falling. Moreover, since the reaction force generator 3 and the link mechanism 11 are small, they can be installed on the elevating body 1 without taking up a large space.
[0047]
(Third embodiment)
FIG. 5 is a configuration diagram showing a third embodiment of an emergency stop device for a lifting body according to the present invention. Since the emergency stop mechanism 5 in this emergency stop device has the same configuration as that of FIG. 2, the detailed configuration of the emergency stop mechanism 5 will be described below with reference to FIG. The parts will be described.
[0048]
This emergency stop device is the same as that of the first embodiment in that a reaction force generator 3 including a weight 3a and an elastic body 3b is installed above the elevating body 1.
[0049]
Further, in this emergency stop device, a linear motion guide body 12 is provided upright on the elevating body 1, and an arm 13 having, for example, a U-shaped cross section that engages with the linear motion guide body 12 is mounted on one side of the weight 3a. Has been.
[0050]
Also, an L-shaped rod suspension member 14 is attached to the weight 3a in a direction opposite to the linear motion guide member 12, and a wedge pull-up rod 4 is connected to a lower end of the rod suspension member 14. . That is, the linear motion guide body 12 and the rod suspension member 14 constitute a rod lifting mechanism, and have a function of vertically lifting the wedge lifting rod 4 when the weight 3a has risen from the home position.
[0051]
Therefore, in this safety device, when the elevating body 1 starts to fall due to the breakage of the rope, the apparent gravity of the elevating body 1 suddenly decreases, and the load against the reaction force of the elastic body 3b on the weight 3a becomes large. Since it decreases, the weight 3a rises. As a result, when the weight 3a rises upward along the linear motion guide body 12, the wedge pulling rod 4 connected to the rod suspension member 14 rises upward, and the wedge 7 is pulled up by the pulling rod 4. 2 comes into contact with the guide rail 2 as shown on the right side of the guide rail 2 in FIG. Accordingly, the wedge 7 exerts a wedge effect between the guide rail 2 and the emergency stop outer body 6, and the two wedges 7, 7 fasten the guide rail 2 from both sides, whereby the elevating body 1 is decelerated and stopped.
[0052]
Therefore, according to the safety device, the same operation and effect as those of the first embodiment can be obtained.
[0053]
In the above embodiment, the arm 13 is lifted up so as to hold the linear guide body 12. However, for example, a groove is formed in the linear guide body 12, and the arm 13 rises along the groove. It may be.
[0054]
(Fourth embodiment)
FIG. 6 is a configuration diagram showing a fourth embodiment of an emergency stop device for a lifting body according to the present invention. Since the emergency stop mechanism 5 in this emergency stop device has the same configuration as that of FIG. 2, the detailed configuration of the emergency stop mechanism 5 will be described below with reference to FIG. The parts will be described.
[0055]
In this emergency stop device, emergency stop mechanisms 5 and 5 shown in FIG. 2 are provided on both sides of the elevating body 1, and a reaction force generator 3 is provided above the elevating body 1. As in FIG. 5, a linear motion guide body 12 is provided upright on the elevating body 1, and an arm 13 having, for example, a U-shaped cross section is provided on one side of the weight 3a to engage with the linear motion guide body 12. ing.
[0056]
Further, an inverted-concave rod suspending member 16 is attached to the weight 3a so as to straddle the upper part of the elevating body 1, and wedge pulling rods 4 are connected to both lower ends of the rod suspending member 16.
[0057]
In this emergency stop device, when the elevating body 1 starts falling due to the breakage of the rope from the steady state in the upper part of the figure, the weight 3a rises as described above, but the rod suspending member 16 follows the weight 3a. As the wedge pulling rod 4 is pulled upward, the wedge 7 exerts a wedge effect between the guide rail 2 and the emergency stop outer body 6, and the two wedges 7, 7 are connected to the guide rail 2. Is tightened from both sides, and the elevating body 1 decelerates and stops (see the lower part of the figure).
[0058]
Therefore, according to the above-described embodiment, the inverted suspension rod member 16 is attached to the reaction force generator 3, and the rod suspension member 16 is used to remove the wedge lifting rods 4 present on both sides of the elevating body 1. Since it is configured to be pulled up, a very small emergency stop device can be realized, and the falling hoist 1 can be stopped with a very high braking force.
[0059]
In the above embodiment, the arm 13 is lifted up so as to hold the linear guide body 12. However, for example, a groove is formed in the linear guide body 12, and the arm 13 rises along the groove. May be.
[0060]
(Fifth embodiment)
FIGS. 7A and 7B are configuration diagrams showing a fifth embodiment of an emergency stop device for a lifting body according to the present invention. Since the emergency stop mechanism 5 in this emergency stop device has the same configuration as that of FIG. 2, the detailed configuration of the emergency stop mechanism 5 will be described below with reference to FIG. The parts will be described.
[0061]
FIG. 7A shows a configuration shown in FIG. 3 in which a rotary attenuator (damper) 18a is mounted in a support 11a, and the end of a swing link 11b is connected to the rotary attenuator 18a.
[0062]
FIG. 7B shows a configuration in which, in the configuration shown in FIG. 5, a direct-acting attenuator (damper) 18b is attached to the upper portion of the direct-acting guide body 12a, and the instantaneous vertical movement of the weight 3a is disabled.
[0063]
In these embodiments, when vibrations and swings occur within the normal behavior range of the lifting / lowering body 1, the rotary attenuator 18 a Alternatively, the operation speed is regulated by the direct acting attenuator 18b so that the wedge pulling amount is not sufficiently reached within the duration of the normal behavior, and as a result, malfunction is avoided.
[0064]
Therefore, according to such an embodiment, even when a relatively large vibration or impact is applied to the elevating body 1 and the weight 3a instantaneously rises, the rotary damper 18a or the linear motion Absorption is performed by the attenuator 18b, so that malfunction due to sudden changes other than breakage of the rope can be avoided.
[0065]
(Sixth embodiment)
FIG. 8 is a configuration diagram illustrating a first embodiment of the safety gear reset device according to the present invention.
[0066]
This embodiment is an example in which the elevating body 1 that has been emergency-stopped by the safety device according to each of the above-described embodiments is returned to a movable state.
[0067]
In this emergency stop return device, a preliminary winding drum 23 is connected to a rotating shaft of a hoisting machine installed on a hoistway top 22 of a hoistway 21, and a preliminary rope 24 is wound around the preliminary winding drum 23. (See the left figure in the figure).
[0068]
On the other hand, a hook 26 is provided on the hoistway bottom 25 so as to hold the guide rail 2 and slide.
[0069]
When the rope is broken, the elevating body 1 is brought into an emergency stop state in the middle of the hoistway by the emergency stop device described in each of the above-described embodiments. However, it is necessary to return the stopped elevating body 1 to a movable state. is there.
[0070]
For this return, the auxiliary winding drum 23 is connected to the rotating shaft of the hoisting machine, and the auxiliary rope 24 wound around the auxiliary winding drum 23 is lowered by the rotating operation of the hoisting machine. This spare rope 24 passes by the side of the elevating body 1 so that the tip of the rope reaches the hook 26. Here, the tip of the spare rope 24 is attached to the hook 26 (see the center view in the figure).
[0071]
In this state, when the preliminary winding drum 23 is rotated via the hoist and the preliminary rope 24 is wound up, the hook 26 rises along the guide rail 2 and is hooked on the bottom of the elevating body 1 (FIG. 1). (See right figure). Since the hook 26 rises along the guide rail 2, it is possible to create a state where the hook 26 is securely hooked on the bottom of the elevating body 1.
[0072]
When the preliminary winding drum 23 is still rotated after the hook 26 is hooked on the elevating body 1, the emergency stop outer body 6 attached to the elevating body 1 is forcibly raised, and the wedge 7 is lowered. Can be returned to the movable state.
[0073]
In addition, after the hook 26 is hooked on the elevating body 1, if the elevating body 1 is pulled up while repeating the required speed and the high speed, the wedge 7 can be released relatively easily, and the elevating body 1 can be brought into a movable state. it can.
[0074]
(Seventh embodiment)
FIG. 9 is a configuration diagram showing a second embodiment of the safety gear reset device according to the present invention.
[0075]
This embodiment is an example in which the lifting / lowering body 1 that has been emergency-stopped by the emergency stop device according to each of the above-described embodiments is returned to a movable state, but instead of the hook 26 at the bottom of the lifting / lowering body 1 shown in FIG. Couplers 27a and 27b are provided in pairs at the tip of the spare rope 24 suspended from the winding drum 23 and the upper part of the elevating body 1, respectively (see the left figure in the figure).
[0076]
In this state, the auxiliary winding drum 23 is connected to the rotating shaft of the hoist, and the auxiliary rope 24 wound around the auxiliary winding drum 23 is lowered by the rotating operation of the hoist, and the tip of the rope is When the part approaches the lifting / lowering body side coupler 27b to a predetermined distance, the couplers 27a and 27b are automatically fitted to each other (see the center view in the figure). The hoistway-side coupler 27a is configured to slide while holding the guide rail 2.
[0077]
After the pair of couplers 27a and 27b are connected as described above, the preliminary winding drum 23 is rotated via the hoist as shown in the right figure of FIG. Since the emergency stop outer body 6 attached to the elevating body 1 forcibly rises while the wedge 7 descends, it can be returned to the movable state.
[0078]
Since the emergency stop mechanism 5 is normally provided on both sides of the elevating body 1, two preliminary winding drums 23 are connected to the rotating shaft of the hoist in FIGS. 8 and 9, and a similar configuration is employed. This can be achieved by:
[0079]
(Eighth embodiment)
FIG. 10 is a view showing a first embodiment of the emergency stop return method according to the present invention.
[0080]
This embodiment is directed to an elevator system in which an elevating body (rope rest device of a main rope) 1b is arranged above a main elevating body 1a, and a sub-elevating body 1b moves up and down in conjunction with the elevating operation of the main elevating body 1a. This is an example in which the hanging rope 31 for suspending the sub-elevating body 1b is broken, and the sub-elevating body 1b is returned when the sub-elevating body 1b is emergency-stopped by the emergency stop device.
[0081]
In this emergency stop return device, the main lifting / lowering body 1a is raised via the main rope 33 wound around the hoisting machine 32 (see the left figure in the figure). So that the main elevating body 1a is pushed up from the lower side of the sub elevating body 1b (see the right figure in the figure), and when the sub elevating body 1b is forcibly raised, the wedge 7 descends. 1b can be returned to the movable state.
[0082]
(Ninth embodiment)
FIG. 11 is a diagram illustrating a second embodiment of the emergency stop return method according to the present invention.
[0083]
In this embodiment, for example, in an elevator system in which a lifting / lowering body 1b is disposed below a main lifting / lowering body (car cage) 1a, and a secondary lifting / lowering body 1b is raised / lowered in conjunction with a lifting / lowering operation of the main lifting / lowering body 1a, This is an example in which the hanging rope 36 suspending the sub-elevating body 1b from the body 1a is broken, and the sub-elevating body 1b is returned when the sub-elevating body 1b is emergency-stopped by the emergency stop device.
[0084]
In this emergency stop return device, a compensating rope 39 is connected to a relatively short hook fixing member 37 of a predetermined length derived from the bottom of the main elevating body 1a via an automatic opening / closing hook 38. The hook fixing member 37 may be, for example, any of a hard wire, a cylinder, a rod, and the like. The automatic opening / closing hook 38 is configured to gently hold the compensating rope 39 without damaging it.
[0085]
In this state, when the sub-elevating body 1b is stopped by the emergency stop device in an emergency, the main elevating body 1a is lowered at a low speed via the main rope 33 wound around the hoisting machine 32 while the sub-elevating body 1b is Approaching (see the left figure in the figure). If the main lifting / lowering body 1a continues to be lowered, the automatic opening / closing hook 38 is opened after the automatic opening / closing hook 38 has passed through the steady rest ring 40 attached to the center of the secondary lifting / lowering body 1b (refer to the center drawing in the figure). ).
[0086]
After the automatic opening / closing hook 38 is opened, the hoist is rotated and the main lifting / lowering body 1a is raised at a low speed via the main rope 33. If the wedge 7 is lowered by forcibly raising it while holding it (see the right figure in the figure), the sub-elevating body 1b can be returned to the movable state.
[0087]
The present invention is not limited to the above-described embodiment, and can be implemented with various modifications without departing from the scope of the invention.
[0088]
Further, the embodiments can be implemented in combination as much as possible, and in that case, the effect of the combination can be obtained. Furthermore, each of the above embodiments includes various upper and lower stage inventions, and various inventions can be extracted by appropriately combining a plurality of disclosed components. For example, when an invention is extracted because some constituent elements can be omitted from all the constituent elements described in the means for solving the problem, if the extracted invention is implemented, the omitted part is omitted. Is appropriately supplemented by well-known conventional techniques.
[0089]
【The invention's effect】
As described above, according to the present invention, the reaction force generator of the acceleration detection method is used, and the wedge pulling rod of the emergency stop mechanism is pulled up via the link mechanism while utilizing the acceleration caused by the falling of the lifting body. Since the lifting body is forcibly stopped by the wedge effect, it is possible to easily attach the lifting body to the lifting body in a small space, and to provide a safety device for the lifting body that can stop the lifting body reliably when the rope is broken.
[0090]
Also, for the return of an elevator that has been emergency-stopped by an emergency stop device in the middle of the hoistway, the elevator's emergency stop reset device and its lifting device that can return the elevator to a movable state by effectively using existing equipment An emergency stop return method can be provided.
[Brief description of the drawings]
FIG. 1 is a configuration diagram showing a first embodiment of an emergency stop device for a lifting body according to the present invention.
FIG. 2 is a cross-sectional configuration diagram of an emergency stop mechanism included in the emergency stop device.
FIG. 3 is a configuration diagram showing a second embodiment of an emergency stop device for a lifting body according to the present invention.
FIG. 4 is a configuration diagram showing another example of the safety device shown in FIG. 3;
FIG. 5 is a configuration diagram showing a third embodiment of an elevating device emergency stop device according to the present invention.
FIG. 6 is a configuration diagram showing a fourth embodiment of an emergency stop device for a lifting body according to the present invention.
FIG. 7 is a configuration diagram showing a fifth embodiment of an emergency stop device for a lifting body according to the present invention.
FIG. 8 is a configuration diagram showing a first embodiment of an emergency stop return device for a lifting body according to the present invention.
FIG. 9 is a configuration diagram showing a second embodiment of an emergency stop return device for a lifting body according to the present invention.
FIG. 10 is a diagram illustrating a first embodiment of the emergency stop return method for the lifting body according to the present invention.
FIG. 11 is a view for explaining a second embodiment of the emergency stop return method for the lifting body according to the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Elevating body, such as a main elevating body, a sub-elevating body, 2 ... Guide rail, 3 ... Reaction force generator, 4 ... Wedge raising rod, 5 ... Emergency stop mechanism, 6 ... Emergency stop outer body, 7 ... Wedge, 11 .. Link mechanism, 11a, 11aa, 11ab Link support, 11b, 11ba, 11bb Swing link, 12 Linear guide, 13 Arm, 14, 16 Rod suspension member, 18a Rotary attenuator (Damper), 18b: direct-acting attenuator (damper), 27a, 27b: coupler, 21: hoistway, 23: spare winding drum, 24: spare rope, 26: hook, 31, 36: hanging rope, 32: hoisting machine, 33: main rope, 37: hook fixing member, 38: automatic opening / closing hook, 39: compensating rope.

Claims (9)

In an emergency stop device of an elevating body that stops the elevating body that falls due to the breakage of the rope,
Attached to at least one side of the elevating body, the cavity has a shape narrowed toward the upper side so as to surround both sides of a guide rail for guiding the elevating body, and a wedge is provided in the cavity. Emergency stop mechanism,
A reaction force generator having a weight which is installed on the elevating body, is always located at a predetermined lowering position, and is displaced to an ascending position in accordance with an increase in acceleration accompanying the falling of the elevating body,
A wedge pulling-up member that pulls up the wedge as the weight rises. The emergency stop device of the lifting body according to claim 1,
The reaction force generator is swingably supported, one end of which is pivotally supported on the side opposite to the wedge pulling member, and the other end of which is connected to the upper end of the wedge pulling member. An emergency stop device for an elevating body provided with a dynamic link. The emergency stop device of the lifting body according to claim 1,
When the emergency stop mechanism is provided on both sides of the elevating body,
The reaction force generator is swingably supported, one end of which is pivotally supported by a first link support located on the side opposite to the first wedge pull-up member, and the other end of which is supported by the first link support. A first swing link connected to the upper end of the first wedge pull-up member;
The first link support is swingably supported by a second link support located on the opposite side of the reaction force generator with the first link support interposed therebetween. One end of the second link support is connected to one end of the first swing link. An emergency stop device for an elevating body, further comprising a second swing link pivotally supported and having the other end connected to an upper end of the second wedge pull-up member. The emergency stop device of the lifting body according to claim 1,
A linear guide body that is erected on the elevating body and guides a weight that constitutes the reaction force generator to linearly move;
An emergency stop device for a lifting body, further comprising a rod suspension member attached to the reaction force generator and suspending the wedge lifting member. The emergency stop device of the lifting body according to claim 1,
When the emergency stop mechanism is provided on both sides of the elevating body,
A linear guide body that is erected on the elevating body and guides a weight that constitutes the reaction force generator to linearly move;
The wedge pulling members connected to the wedges of the emergency stop mechanism arranged on both sides of the elevating body are respectively connected to the wedge pulling members, and on both sides of the elevating body according to the displacement of the lifting position of the weight constituting the reaction force generator. An emergency stop device for an elevating body, further comprising a rod suspending member that simultaneously lifts the wedge lifting member that is disposed. An emergency stop resetting device for an elevating body that returns the elevating body that has been emergency-stopped by the emergency stop device according to any one of claims 1 to 5 to a movable state,
A hook slidably provided by holding a guide rail at the bottom of the hoistway;
A winding drum connected to a hoisting machine installed at the top of the hoistway, and a rope wound thereon,
At the time of emergency stop of the elevating body, the tip of the rope is lowered from the winding drum by the rotating operation of the hoist and attached to the hook, the rope is wound up, the hook is hooked on the elevating body, and lifted, An emergency stop return device for a lifting body, which releases a wedge of an emergency stop mechanism. An emergency stop resetting device for an elevating body that returns the elevating body that has been emergency-stopped by the emergency stop device according to any one of claims 1 to 5 to a movable state,
A lifting / lowering body-side coupler installed above the lifting / lowering body,
A winding drum connected to a hoisting machine installed at the top of the hoistway and having a rope wound thereon,
A hoistway-side coupler provided at the tip of a rope wound around the winding drum,
At the time of emergency stop of the hoist, the rope end is lowered from the winding drum by the rotating operation of the hoist, the hoistway-side coupler is automatically connected to the hoist-body coupler, and the rope is wound up to raise and lower the rope. An emergency stop returning device for an elevating body, which lifts the body and releases the wedge of the emergency stop mechanism. A main lift that moves up and down in the hoistway by the rotation of the hoist; and a slave that is provided above the main lift and has a steadying function for a compens rope that moves up and down in conjunction with the lift of the main lift. An emergency stop resetting method for an elevator, which has an elevating body, and returns the subordinate elevating body that has been emergency-stopped by the emergency stop device according to any one of claims 1 to 7 to a movable state.
The main hoist is raised via a main rope that is hung over the hoist, and is pushed up from the lower side of the sub-elevator, whereby the sub-elevator is forcibly raised, and the emergency stop device is moved. An emergency stop return method for an elevating body, characterized by being released. A main lift that moves up and down in the hoistway by the rotation of the hoist, and a slave that is provided below the main lift and has a function of preventing the compensating rope from moving up and down in conjunction with the lift of the main lift. An emergency stop resetting method for an elevator, which has an elevating body, and returns the subordinate elevating body that has been emergency-stopped by the emergency stop device according to any one of claims 1 to 7 to a movable state.
A compensating rope is provided via an automatic opening / closing hook at a predetermined length position from the bottom of the main elevating body, and the automatic opening / closing hook is formed at the center of the slave elevating body while lowering the main elevating body. After passing through the stop ring, the automatic opening / closing hook is automatically opened and pushed up so as to hold it from below the sub-elevating body, thereby forcibly raising the sub-elevating body and releasing the emergency stop device. An emergency stop return method for a lifting body.

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