JP2012066928A - Car moving device for elevator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a car moving device for an elevator which allows rapid rescue of occupants while improving the working efficiency of maintenance staff by facilitating carrying into a site or attachment to a rope by securing a necessary tension with energizing forces of wires wound respectively on a plurality of reels without having the tension difference between a car and a balancing wight depended on the dead weight of a weight.SOLUTION: The device includes: a plurality of reels provided in a pit of an elevator shaft, around which wires having energizing forces are wound; and a hook part provided on a rope attached to a car moving up and down in the elevator shaft, the hook part hooking and holding the other ends of the wires having one-side ends fixed to the plurality of reels in a state where they are stretched upward from the reels. The car is moved by the energizing forces of the wires.

Description

In the elevator in which the car and the counterweight are suspended by the main rope on the sheave, the car is moved when the car is stopped between the floors of the building due to a power failure or the like and the passenger is trapped in the car. The present invention relates to a device that rescues passengers in a car.

Conventionally, when a power failure occurs in a building and the car stops between floors and a passenger is trapped in the car, the brake of the hoist is manually released using a brake release tool. At this time, if the car and the counterweight are in an unbalanced state, the car moves up and down as the hoist is released. For this reason, the brakes are intermittently released to allow the car to land on the nearest floor.

On the other hand, when the car and the counterweight are in an equilibrium state, the maintenance staff enters the pit, selects the floor on which the car is to be landed, and the necessary weight for the rescue weight is applied to the car side governor rope or the counter car side governor rope. It will be in an unbalanced state by attaching a minute. Then go out to the hall side, release the hoisting machine brake and raise and lower the car. Also, if the rescue weight comes in contact with the tensioned vehicle before landing on the rescue floor, it will again enter the pit and change the rescue weight, release to the hall again, release the brake, and raise and lower the car. This operation is repeated until the car reaches the nearest floor (for example, see Patent Document 1).

Japanese Patent Laid-Open No. 2002-338162 (paragraphs 0020 and 0021, FIG. 1)

  However, in reality, it is not possible to overcome various resistances called mechanical loss simply by breaking the balance of the car and the counterweight, and a mass exceeding several tens to several hundred kg is required to raise and lower the car. . Therefore, if a weight is installed at each site in order to facilitate the rescue operation, the cost for permanently installing the weight at each site is increased. In addition, when receiving a report of confinement and taking out a weight from each base to carry out rescue work, manpower is required to transport a weight of about 100 kg or a large amount of labor when transporting with a small number of people. There is a problem that requires.

  Furthermore, when the weight is actually installed at the site, the height that can be attached to the governor rope from the pit is the height of the maintenance staff or the reach of the hand, and even if a work table is used, the work platform floor height is added. About the height. That is, after the weight is attached to the governor rope, the amount of movement that can be performed by the car when the maintenance staff releases the brake at the landing is the amount of movement until the weight hits the tensioned vehicle. That is, if it is necessary to move the car further, the maintenance staff must once stop releasing the brake, enter the pit again, and perform a weight replacement operation. Eventually, the maintenance personnel need to perform replacement work by a value obtained by rounding up the value of (necessary amount of movement of the car) / (movement amount of the car that can be moved by attaching a single weight) to a small number. Therefore, the weight of about 100 kg is reassigned as many times as necessary, and the burden on the maintenance staff is large, which can be a problem of quick rescue work.

  The present invention has been made to solve the above-described problems, and does not rely on the weight difference between the weight of the car and the counterweight but depends on the urging force of the wire wound around each of the reels. It is an object of the present invention to obtain an elevator car moving device that facilitates carrying on the site and attaching to a rope by ensuring a sufficient tension, improves the workability of maintenance personnel, and rescues passengers quickly.

  In the elevator cab moving apparatus according to the present invention, the plurality of reels provided in the pit of the hoistway, each wound with a wire having a biasing force, and the other end of the wire having one end fixed to the plurality of reels are provided. And a hook that is hooked and held in a state of being stretched upward from the reel, and is provided on a rope that is attached to a car that moves up and down the hoistway, and moves the car by the urging force of the wire.

According to the present invention, necessary tension can be secured by the urging force of the wires wound around the plurality of reels, and the car can be moved with a light and light device. Therefore, the maintenance staff can safely and quickly carry-in work into the pit of the winder or move the car, and workability can be improved and passengers can be rescued quickly.

1 is an overall configuration diagram of an elevator provided with a car moving device according to Embodiment 1 of the present invention. It is a principal part perspective view of the elevator provided with the cage | basket | car moving apparatus which shows Embodiment 1 of this invention. It is a principal part enlarged view of the car moving apparatus which shows Embodiment 1 of this invention. It is a perspective view of the hook part of the cage | basket | car movement apparatus which shows Embodiment 1 of this invention. It is sectional drawing of the attaching part of the cage | basket | car moving apparatus which shows Embodiment 1 of this invention. It is another principal part enlarged view of the cage | basket | car moving apparatus which shows Embodiment 1 of this invention.

Embodiment 1 FIG.
The elevator car moving apparatus according to the first embodiment will be described. First, the configuration of the elevator will be described. FIG. 1 shows an example of an overall configuration diagram in a hoistway of an elevator provided with a car moving device.

  In FIG. 1, a car 1 that moves up and down is provided in an elevator hoistway provided in a building, and is stopped between floors of the building. Further, the main rope 3 is wound around a sheave 20 fixed to the hoisting machine 4 provided in the pit of the hoistway and rotated in conjunction with the hoisting machine 4, and the main rope 3 is passed through the pulleys 22 to 26. The counterweight 2 and the car 1 are connected to the both ends of the rack by a 2: 1 roping method in a suspending manner. Here, the 2: 1 roping method refers to a method in which the car 1 is moved up and down at a speed half that of the main rope.

In FIG. 1, passengers are present in the car 1, and are in a passenger confinement state where the car 1 cannot be raised or lowered electrically due to a power failure or the like. Further, reference numeral 27 denotes the nearest floor, and it is usually necessary to move the car 1 to the nearest floor 27 in order to rescue passengers trapped in the elevator car 1. Further, a governor 6 is installed near the ceiling of the hoistway for performing deceleration control or the like when the speed of the elevator exceeds a specified value. The governor 6 has a governor rope 7 hanging down to convey the speed of the car to the governor 6. The governor rope 7 is attached to a tensioning wheel 11 provided in a pit for tensioning the governor rope 7 and smoothly moving the rope. The lower end of is wrapped. That is, the governor rope 7 is suspended from the governor 6 and the tensioning wheel 11 in an endless manner. A link mechanism 21 that connects the car 1 and the governor rope 7 is provided in the middle of the governor rope 7. The governor rope 7 includes a car side governor rope 28 and a non-car side governor rope 29 on the side where the governor rope 7 and the car 1 are connected.

  The tension wheel 11 is provided at a position lower than the upper end position of the shock absorber 10 provided on the bottom surface of the pit substantially directly below the car 1, and is positioned substantially directly below the governor 6. The shock absorber 10 is for reducing the collision of the car 1. In addition, a winder 12 is provided on the bottom surface of the pit in the vicinity of the tension wheel 11, and the wire of the winder 12 is attached to the governor rope 7 at a height that can be reached by a maintenance worker standing in the pit.

During the normal operation of the elevator, the hoisting machine 12 is not attached. When the sheave 20 of the hoisting machine 4 is rotated, the car 1 and the counterweight 2 connected to the main rope 3 wound around the sheave 20 are obtained. Move in opposite directions. According to the operation of the car 1, the car side governor rope 7 moves in the same direction as the car 1 via the link mechanism 21, and the non-car side governor rope 29 moves in the reverse direction.

  FIG. 2 is a perspective view of a main part of an elevator provided with a car moving device, and shows a winder 12 which is a specific example of the car moving device provided on the bottom surface of a pit of a hoistway. FIG. 3 is an enlarged view of a main part of the car moving device, and shows details of the winder 12. In FIG. 2, reference numeral 14 denotes a guide rail that extends in the ascending / descending direction of the car 1 and guides the movement of the car 1. The shock absorber 10 provided on the bottom surface of the pit is provided on the shock absorber base 9.

2 and 3, the winder 12, which is partly attached to the governor rope 7 that moves close to the car 1 and moves in the vertical direction, is installed in the vicinity of the governor rope 7 and not in contact with the car 1. The winder 12 includes a reel 12a, a wire 12b, a mounting base 12c, a hooking portion 12d, a bearing portion 12e, a shaft 12f, and a mounting portion 12g. The mount 12c is fixed to a female anchor bolt or the like that has been struck in advance on the bottom surface of the pit. In addition, the mounting base 12c is provided with a plurality of reels 12a that rotate about the shaft 12f at a bearing portion 12e that supports the shaft 12f.

A plurality of reels 12a each have a drum (not shown) around which a wire 12b is wound so as to be rotatable around a shaft 12f. A spiral spring is attached to the drum in one direction. It is attached to force. Further, a biasing force is applied to the wire 12b by a spring attached to the drum. When the wire 12b is pulled against the urging force of the wire 12b, the drum rotates and the wire 12b extends. At this time, a winding force for winding the wire 12b around the reel 12a is generated by the spring of the reel 12a. One end of the wire 12b is fixed to the drum. Note that a plurality of wires 12b may be used, and the winder 12 may have a configuration in which a plurality of reels are integrated.

  On the other hand, the wire 12b is extended upward, and the other end of the wire 12b is attached to the governor rope 7 via a hooking portion 12d and an attaching portion 12g. FIG. 4 is a perspective view showing a hook portion 12d for hooking the wire 12b. FIG. 5 is a structural view of the vicinity of the attachment portion 12g for attaching the hook portion 12d to the governor rope 7, and is a cross-sectional view taken along line AA of FIG.

In FIG. 4, the hook portion 12d is for hooking the other ends of the plurality of wires 12b, and slits are formed intermittently. Then, a spherical round metal fitting fixed to the tip of the wire 12b with a caulking is hooked and held by a hooking portion 12d provided with slits having a pitch smaller than the diameter of the round metal fitting. The slits extend by the number corresponding to the number of wires 12b in a direction substantially orthogonal to the length direction of the governor rope 7. The hooking means is not limited to this, and for example, hook-shaped portions (not shown) corresponding to the number of wires 12b may be formed in the hooking portion 12d, and the other end of the wire 12b may be hooked there. . At this time, the other end of the wire 12b is bent in a ring shape and fixed by caulking or the like.

  2 and 5, the mounting portion 12g provided in the governor rope 7 while being provided substantially in parallel with the hooking portion 12d, that is, in the length direction of the governor rope 7 has, for example, a substantially L-shaped cross section. . At this time, one piece of the attachment portion 12g is provided on the hook portion 12d, and the other piece is provided on the governor rope 7. Note that the attachment portion 12g is not limited to a substantially L-shaped cross section, and may be any shape that extends in the length direction of the governor rope, such as a U-shape or a crank shape.

  Here, one piece of the hooking portion 12d and the attachment portion 12g is fixed by welding the overlapping surfaces in advance, or by inserting a bolt in a direction substantially orthogonal to the overlapping surfaces and fixing with a nut. Alternatively, the hook portion 12d and the attachment portion 12g may be a single fixture. In addition, a U-shaped bolt is inserted into the other piece of the attachment portion 12g so as to sandwich the governor rope 7, and the tips of the U-shaped bolts are tightly closed with nuts. Thereby, the governor rope 7 is pressed and fixed by the curved portion of the U-shaped bolt and the other piece of the mounting portion 12g. In addition, when attaching the attachment part 12g to the main rope 3, it attaches by the same method.

  Thus, when the attachment part 12g substantially parallel to the length direction of the governor rope 7 is provided between the hook part 12d and the governor rope 7, the governor rope 7 is compared with the case where the hook part 12d is directly attached to the governor rope 7. As a result, the fixing strength of the hook 12d increases. This is because the contact portion with the governor rope 7 increases through the attachment portion 12g, the stress applied to the unstable governor rope 7 is dispersed, and the hook portion 12d is difficult to rotate. However, the hook 12d may be directly attached to the governor rope 7.

  Next, operations that characterize the first embodiment will be described. During normal operation of the elevator, when the sheave 20 of the hoisting machine 4 is rotated, the main rope 3 wound around the sheave 20 moves, and accordingly, the car 1 and the counterweight 2 move in directions opposite to each other. Further, the car 1 and the car-side governor rope 28 are connected via a link mechanism 21 and move so that the endless governor rope 7 rotates as the car 1 moves.

  On the other hand, for example, passengers are trapped in the elevator car 1 provided in the building due to power failure, control panel failure, etc., and the car 1 cannot be raised or lowered electrically, and the brake of the hoisting machine 4 is Even when opened, the car 1 and the counterweight 2 may be in a balanced state. In this case, it is necessary to move the car 1 to the nearest floor 27 and rescue the passengers at an early stage. Here, the balance state means a mechanical loss due to a rolling loss of a bearing of a rotating object (a hoisting machine, a warping wheel, a suspended car), a sliding loss with a guide rail during traveling of a guide shoe, a bending loss of a rope, or the like. In order to indicate the balanced state considered and to form the unbalanced state, for example, in a configuration in which the hoisting machine 4 is disposed below by 2: 1 roping, a weight amount within about 100 kg to 150 kg is required.

  As described above, when the passenger's car 1 cannot be moved, the maintenance staff first strikes the anchor through the mounting base 12c on the female anchor bolt that enters the pit in advance and is hit on the bottom surface of the pit, The winder 12 is fixed by tightening with a nut or the like.

  However, even when the elevator detects an abnormality due to, for example, a passenger jumping in the elevator car 1 and the circuit temporarily stops, the car 1 stops between the floors and the passengers are confined in the car 1. May occur. However, in that case, the car 1 cannot be moved electrically. Therefore, even when the car 1 and the counterweight 2 are in a balanced state, the maintenance staff opens the cover of the hall call device provided at the hall on each floor and connects the portable terminal to the connector in the hall call device, so that the car 1 UP or DOWN operation can be performed.

  Next, the hook portion 12d and the attachment portion 12g, which are bonded in advance and integrated, are fixed to the governor rope 7 with a U-shaped bolt and nut within a range that can be reached by maintenance personnel. Whether the hook portion 12d and the attachment portion 12g are attached to the car side governor rope 28 or the non-car side governor rope 28 is determined by the direction in which the nearest floor 27 is located. That is, since the car 1 and the governor rope 7 are connected via the link mechanism 21, if there is a nearest floor in the downward direction, it is attached to the car side governor rope 28, and if there is a nearest floor in the upward direction, the non-car side governor rope 29. Be attached to. However, if the car 1 is to be moved to a floor opposite to the nearest floor 27, the side to which the rope is attached is selected accordingly. In FIG. 1, since the nearest floor 27 exists in the downward direction, the hook portion 12 d and the attachment portion 12 g are attached to the car-side governor rope 28. At this time, the wire 12b in which a round metal fitting with a spherical tip is formed is pulled out from the reel 12a of the winder 12 one by one, and is fixed to the governor rope 7 and hooked on a plurality of slits in the length direction of the hooking portion 12d. .

  In the configuration in which the hoisting machine 4 is arranged at the bottom by 2: 1 roping, a weight amount within about 100 kg to 150 kg is required. For example, when five reels 12 a are provided on the left and right sides of the governor rope 7, The winding force per reel is 10kg to 15kg. That is, the maintenance work can be performed by one maintenance person, and it is only necessary to hook the wire 12b on the hooking portion 12d as much as necessary tension. Compared to lifting the weight to a high position and hooking it on the rope by a plurality of persons, the workability is extremely high. Excellent. Then, one maintenance person pulls out the wires 12b from the reels 12a provided on the left and right of the governor rope 7 one by one alternately, and hooks the wires 12b on the hooking portion 12d. As a result, an equal number of wires 12b are hooked on the left and right of the governor rope 7, and a weight can be applied to the governor rope 7 evenly on the left and right. Along with this, the bending moment applied to the mounting portion 12g can be reduced, and there is no need to increase the strength and rigidity of the mounting portion 12g. Accordingly, the size of the mounting portion 12g can be reduced and reduced in weight, so that the mounting workability can be improved and the cost can be reduced. In addition, because the weight of the winder 12 is such that even one maintenance worker can carry it from the site and work on site, the maintenance worker can easily install or replace the weight, and the car 1 can be moved safely and quickly. it can. Accordingly, passengers can be rescued quickly.

  When the required number of hooks 12d are completed, the maintenance staff exits the pit and opens the cover of the hall call device that is embedded in the hall wall and has a push button. Then, the maintenance staff connects the portable terminal device to the connector provided in the hall call device, and releases the brake of the hoisting machine 4 by the emergency battery. Then, the car 1 is pulled downward by the reel 12a having a winding force, and the car 1 moves. The brake release is stopped at the position where the car 1 arrives at the nearest floor 27, the door is opened, and the passenger is rescued.

  Further, FIG. 1 shows an example of 2: 1 roping, but a 1: 1 roping configuration may be used. Further, a part of the winder 12 may be attached to the main rope 3 without being attached to the governor rope 7, but in that case, the main rope 3 needs to exist at a height that can be reached by the maintenance personnel, A hoisting machine 4 is arranged in a pit below the road. Also, after attaching a rope to a beam or the like provided on the lower surface of the car 1 and fixing the hooking portion 12d to the rope with a U-shaped bolt and nut parallel to the vertical direction that is the length of the rope The round metal fitting at the tip of the wire 12b may be hooked on the slit provided in the hook portion 12d. In this case, the work position is a height that can be reached by maintenance personnel. Note that the above-mentioned height that can be reached by the maintenance staff means that when performing maintenance using a workbench, the height of the workbench is added to the length from the foot to the tip of the hand with the hand raised. Is. Then, the workbench may be stored in a space that does not come into contact with equipment such as a hoistway on the bottom of the pit during normal operation.

  In the above description, the machine room provided on the roof for operating the elevator does not exist, that is, the machine room is not described. However, the machine room may be provided. If there is a machine room, the hoisting machine is installed in the machine room, so maintenance personnel can attach a hand-wound handle to the hoisting machine in a safe state and lift the car 1 up and down. If a fire or the like occurs in the building, smoke may rise and fill the machine room. In such a case, it is necessary to release the brake on the landing side after attaching the winder 12 to the rope.

  If the hook 12d or the mounting portion 12g interferes with the tensioning vehicle 11 before the car 1 arrives at the nearest floor 27, the brake release is stopped, the end of the wire 12b that enters the pit again and is hooked on the hook 12d. Is removed, and the hook 12d and the attachment 12g are reattached to a height within the reach of maintenance personnel. Then, the wire 12b is again hooked on the hook 12d. This is repeated as many times as necessary.

  Then, similarly to the above, the wire 12b is hooked again in the hole of the hooking portion 12d, and after the installation work is completed, the vehicle 12 is released to release the brake and the car 1 is moved again.

  With the above-described configuration, a plurality of maintenance personnel, which conventionally attached, replaces, or removes a weight by a required weight, the winder 12 performs work alone with a light and light device. It becomes possible. Therefore, the maintenance staff can safely carry out the work of bringing the winder 12 into the pit or the work of moving the car 1, and the workability is improved and the passenger can be rescued quickly.

In addition, by using the winder 12, the operation of generating tension unbalance between the car 1 and the counterweight 2 using the weight of the weight in the past can be performed by the urging force of the wire 12b. A tension imbalance can be generated. Therefore, the amount of unbalance can be adjusted by adjusting the tension according to the number of wires 12b.

  Further, since an equal number of wires 12b are hooked on the left and right sides of the governor rope 7 so that the load can be evenly applied to the left and right sides of the governor rope 7, the bending moment applied to the mounting portion 12g can be reduced, and the strength and rigidity of the mounting portion 12g are increased. There is no need. Therefore, the size of the mounting portion 12g can be reduced in size and weight, and the mounting workability can be improved and the cost can be reduced.

  Further, the weight and size of the winder 12 can be considerably reduced as compared with the conventional weight, and portability is improved. As a result, when the maintenance staff receives a report of rescue, the winder 12 can be easily carried, so that it can be quickly moved to the site without installing the winder 12 at each installation location of the elevator. It is possible to distribute the bases, and the necessary number of winders 12 can be minimized so that the cost can be reduced.

  The above-described winder 12 has been described as being carried by a maintenance staff from a base away from the site when passengers are trapped. However, a part of the winder 12 is permanently installed on the bottom of the pit of the hoistway. Also good. FIG. 6 shows a partial modification of the winder 12. In addition, about the structure and operation | movement similar to the above, it abbreviate | omits suitably.

  In FIG. 6, for example, the bearing portion 12 e is obtained by fixing a piece of an L-shaped plate and an I-shaped plate with bolts and nuts. The other piece of the L-shaped plate is fixed to the mounting base 12c by welding. A stepped groove is formed in the bearing portion 12e so that the shaft 12f can be attached, and both ends of the shaft 12f are fitted into the stepped groove of the bearing portion 12e facing each other from the side. A stepped groove is formed in such a direction that the force applied to the bearing portion 12e can be locked when the wire 12b is pulled out so that the wire 12b can be pulled out from the reel 12a.

  The shaft 12f has a step at the center in the length direction, and the reel 12a is not disposed at the center in the length direction of the shaft 12f when the reel 12a is fitted from both ends of the shaft 12f. This is because the reel 12a is not arranged in front of the governor rope 7, but the same number of reels 12a are arranged on the left and right, so that the end of the wire 12b is pulled upward from the reel 12a and the end is placed on the corresponding hook 12d. This is to apply an even weight to the governor rope 7 when hooked. That is, when the shaft 12f is installed on the mount 12c and the bearing portion 12e, the position of the step and the position of the governor rope 7 are made equal in the length direction of the shaft 12f. Further, after the necessary number of reels 12a are fitted to the shafts 12f, the necessary number of spacers 12h for filling the space in the length direction of the shaft 12f from the reels 12a to the bearing portions 12e are fitted to the shafts 12f.

  With such a structure, the mounting base 12c and the bearing portion 12e are permanently installed on the bottom face of the pit of the hoistway, and the reel 12a, the shaft 12f, and the spacer 12h may be carried from the base. Therefore, when receiving a rescue report, the maintenance staff can move from the base to the site more easily and quickly.

  In addition, when the work is performed at the site, the mounting base 12c and the bearing portion 12e are installed in a predetermined place in advance, so that the positioning work of the mounting base 12c and the work of fixing to the pit surface can be omitted. Therefore, the workability of maintenance personnel is improved, and passengers can be rescued quickly.

DESCRIPTION OF SYMBOLS 1 Car 2 Counterweight 3 Main rope 4 Hoisting machine 6 Governor 7 Governor rope 9 Shock absorber stand 10 Shock absorber 11 Tensioner 12 Winder 12a Reel 12b Wire 12c Mounting base 12d Hooking part 12e Bearing part 12f Shaft 12g Spacer part 14 Guide rail 20 Sheave 21 Link mechanism 22-26 Pulley 27 Nearest floor 28 Car side governor rope 29 Non-car side governor rope

Claims (4)

A plurality of reels provided in pits of the hoistway, each wound with a wire having a biasing force;
The other end of the wire, one end of which is fixed to the plurality of reels, is hooked and held in a state of being stretched upward from the reel, and a hook portion attached to a rope attached to a car that moves up and down the hoistway;
With
An elevator car moving device characterized in that the car is moved by the urging force of the wire.   2. The elevator according to claim 1, wherein the hook portion attached to the rope is intermittently provided with a groove in a direction substantially orthogonal to the length direction of the rope, and the wire is hooked on the groove. Basket moving device.   3. The elevator car moving apparatus according to claim 1, wherein an equal number of the wires are hooked to the left and right of the rope.   2. The rope according to claim 1, wherein the rope is a governor rope connected to a governor to be controlled to be decelerated when an elevator speed exceeds a specified value, a main rope for suspending the car and a counterweight, or a rope attached to the car. The elevator car moving device according to any one of claims 1 to 3.

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