JP5325904B2 - Emergency stop device and elevator device having the same - Google Patents

Description

  The present invention relates to an emergency stop device that operates when a lever is pulled up, and an elevator device including the same.

  The double deck elevator with two upper and lower cars in the car frame is provided with driving means on the upper part of the upper car, and is provided below the upper car and below the lower car connected to this driving means by a rope. A rope is stretched around the pulley, and the upper car and the lower car are driven by the driving means.

  Applied to double deck elevators configured in this way, the detection roller is placed under the car and abuts against the rope to detect the fall of the car when the rope driving the upper and lower cars is broken. In addition, the detection roller is displaced in response to the abnormal loosening of the rope and the cutting of the rope, and the emergency stop device is operated (for example, see Patent Document 1). And the one that operates the emergency stop device.

JP2007-331871 (paragraph numbers 0021 to 0023, FIG. 4)

  However, when the travel is extremely short, such as in the upper and lower cars of a double deck elevator, when the emergency stop device is operated by detecting the fall of the car when the driving rope is broken by the governor There is a risk of collision with the shock absorber before the governor operates.

  Also in a normal elevator, it is very preferable to improve the response speed of the governor when the car moves at an abnormal speed.

  The present invention has been made from the above-described prior art, and an object thereof is to provide an emergency stop device that can be operated in accordance with the acceleration of the movement of the car such as when a rope breaks without requiring a special device. There is to do.

In order to achieve the above object, the present invention provides an emergency stop device that is provided in a car and operates by pulling up a lift lever, wherein the emergency stop device includes a braking portion that brakes the car and the lift lever is lifted. And a depressing force applying means that is provided in the braking unit operating mechanism and applies a force in a direction opposite to the direction in which the lifting lever is pulled up to the lifting lever. The lifting lever is rotatable about a fulcrum and is configured to be provided with a rotational force that rotates about the fulcrum at one end, and the lifting lever is normally rotated with the fulcrum. The one end to which the force is applied is held at a position below a predetermined angle from the horizontal position, and the lifting lever is pulled. Said one end said one end said rotational force and the fulcrum raised is granted the brake is operated in the range up to the a horizontal position, the rotational force of the pulling lever is applied, the governor A speed governor rope wound around a tension pulley is connected to the machine, and a rotational force that rotates about the fulcrum is applied to the lifting lever by the speed governor rope, and the speed governor rope is wound around the speed governor. A disc-shaped rotational inertial mass is added to be concentric with each other, the tension pulley, or the governor rope wrapping portion and the tension pulley .

  ADVANTAGE OF THE INVENTION According to this invention, the elevator apparatus which the emergency stop apparatus which can be act | operated, and the emergency stop apparatus operate | move according to the acceleration of the movement of a cage | basket | car at the time of a rope break etc. can be provided.

It is a schematic whole block diagram of the double deck elevator of this embodiment. It is a whole block diagram of the car of the double deck elevator of this embodiment. It is a front lineblock diagram showing an outline of a tension pulley of a double deck elevator of this embodiment. It is a side lineblock diagram showing an outline of a tension pulley of a double deck elevator of this embodiment. It is a front view which shows the outline | summary of the emergency stop apparatus periphery of the double deck elevator of this embodiment.

  Embodiments of an elevator apparatus and an emergency stop apparatus according to the present invention will be described below with reference to the drawings.

  The elevator apparatus in the present embodiment is a double deck elevator apparatus, and FIG. 1 shows a schematic overall configuration diagram of the double deck elevator in the present embodiment. As shown in FIG. 1, a car frame 2 that moves up and down in the hoistway 1, a main rope 3 that has one end connected to the car frame 2, and the other end of the main rope 3 that moves up and down in the hoistway 1. The counterweight 4 is installed in the machine room 5 above the hoistway 1, and an intermediate portion of the main rope 3 is wound around, and a drive device 6 that drives the main rope 3 and a drive device 6 in the machine room 5. And a control wheel 8 which is disposed in the machine room 5 and controls the operation of the double deck elevator. The control device 8 is connected to the drive device 6 via a cable 9.

  FIG. 2 is an overall configuration diagram of a car of a double deck elevator in the present embodiment. As shown in FIG. 2, the car frame 2 is composed of an upper frame 2a, an intermediate frame 2b, a lower frame 2c, and a vertical frame 2d, and is erected on the hoistway 1 through guide members 10 arranged at four corners thereof. The guide rail 11 is guided. Further, the car frame 2 includes an upper car 12 and a lower car 13 that can move in opposite directions in the car frame 2, a guide rail 14 that guides the movement of the upper car 12 and the lower car 13, and the upper car 12. And a driving means 15 for driving the lower car 13.

  For example, the driving means 15 is stretched over a motor 151, a car lower pulley 152 provided in the lower part of each of the upper car 12 and the lower car 13, a sheave 151a of the motor 151, and a car lower pulley 152, and one end of the driving means 15 is provided. A plurality of ropes 153 fixed to the upper frame 2a and fixed at the other end to the intermediate frame 2b are provided.

  In the double deck elevator apparatus of this embodiment, as shown in FIG. 2, the speed governors 16a and 16b are installed in the car frame 2, and the tension pulleys 17a and 17b are respectively installed below them. They are connected by 18a and 18b. The speed governor ropes 18a and 18b are connected to the upper car 12 and the lower car 13 by being connected to the lifting levers 19a and 19b of the emergency stop devices provided on the upper car 12 and the lower car 13, respectively. The movements of 12 and the lower car 13 are transmitted to the governors 16a and 16b.

  Next, a basic operation will be described with reference to FIG. 2 when the rope 153 is cut and the upper car 12 or the lower car 13 is dropped. The lifting levers 19a, 19b of the safety device connected to the upper car 12 or the lower car 13 try to pull down the governor ropes 18a, 18b.

  The governor ropes 18a and 18b try to rotate the tension pulleys 17a and 17b together with the governors 16a and 16b. At this time, due to the rotational inertial mass added to the tension pulleys 17a and 17b, an inertial force is generated with respect to the rotation of the tension pulleys 17a and 17b, so that the rotation of the tension pulleys 17a and 17b is stopped. , 18b is tensioned, and as a result, the lifting levers 19a, 19b are moved in the direction of lifting by the relative movement with the upper car 12 or the lower car 13 moving downward, and the emergency stop device is operated. Even if this rotational inertial mass is added to the rotating bodies of the governors 16a and 16b, the same effect is produced. Moreover, the structure added to both the tension pulley 17a and the governor 16a, and both the tension pulley 17b and the governor 16b may be sufficient.

  FIG. 3 is a front configuration diagram showing an outline of a tension pulley of a double deck elevator in the present embodiment. The tension pulley 17 is rotatably fixed to the car frame member 30 constituting the car frame 2 by a lever 33, and allows vertical movement due to the elasticity of the rope. An additional mass 32 for applying tension to the governor rope 18 is fixed to the tip of the lever 33. This mass causes friction between the tension pulley 17 and the governor rope 18 so that the governor rope 18 does not slip even if a car fall acceleration occurs.

  FIG. 4 is a side configuration diagram showing an outline of a tension pulley of a double deck elevator in the present embodiment. The rotary inertia mass 21 is a metal disc fixed to the tension pulley 17 from the side surface. At this time, it is concentric with the tension pulley 17 to prevent vibration during rotation. Moreover, the disk of the rotation inertia mass 21 is a structure which can adjust a rope tension | tensile_strength and an inertial force by adjusting the number of attachment from 1 piece to several pieces. As a result, a rotational inertial mass corresponding to the mass of the car can be added, whereby the inertial force acting on the governor ropes 18a, 18b can be adjusted. In such a configuration, the rotary inertia mass is added to the rotating bodies of the governors 16a and 16b, the rotational inertia mass is added to both the tension pulley 17a and the governor 16a, and both the tension pulley 17b and the governor 16b. It can be applied even in a form to which is added.

  FIG. 5 is a front view showing an outline of the periphery of the safety device of the double deck elevator in the present embodiment. In the figure, the upper car 12 will be described as an example. A car frame member 53 is provided at the lower part of the upper car 12, and the car frame member 53 fixes the upper car chamber 60 via a vibration isolating rubber 54. In the present embodiment, the pulling lever 19a is configured to be connected to the governor rope 18a so that the pulling lever 19a can rotate around the fulcrum 58b and a rotational force that rotates around the fulcrum 58b is applied to one end. .

  The lifting lever 19a is connected to the operating arm 57b. When the lifting lever 19a is pulled up, the operating arm 57b is also rotated around the fulcrum 58b. Further, the operating arm 57b holds the brake unit operating rod 56b, and when the operating arm 57b rotates, the brake unit operating rod 56b is pulled up, and when the brake unit operating rod 56b is pulled up by a predetermined lifting amount, the brake unit 52b operates. When the braking portion 52b is operated, the braking portion 52b is configured to grip the guide rail 14 shown in FIG. 2 (not shown in FIG. 5) and apply a braking force to brake the upper car 12. .

  Further, as shown in FIG. 5, the guide rail 14 is also held against the guide rail 14 facing the guide rail 14 on the side where the operating arm 57b connected to the lifting lever 19a of the upper car 12 is provided. A braking portion 52a that brakes the upper car 12, a braking portion operating rod 56a that operates the braking portion 52a when a predetermined lifting amount is raised, a braking portion operating rod 56a, and a fulcrum 58a. An operating arm 57a is provided that pulls up the braking section operating rod 56a by rotating. The upper end of the operating arm 57 a and the lower end of the operating arm 57 b are connected by a connecting rod 55.

  With such a configuration, when the lifting lever 19a is pulled up and the operating arm 57b rotates counterclockwise around the fulcrum 58b, the operating arm 57b gradually pulls up the brake portion operating rod 56b and pulls the connecting rod 55. The pulled connecting rod 55 rotates the actuating arm 57a clockwise around the fulcrum 58a to raise the brake actuating rod 56a. In the present embodiment, when the lifting lever 19a reaches a position where one end of the lifting lever 19a connected to the governor rope 18a to which the rotational force is applied and the fulcrum 58b is horizontal (hereinafter referred to as a horizontal position 62), braking is performed. The part actuating rods 56a and 56b are pulled up by a predetermined amount to operate the brake parts 52a and 52b. That is, the brake part operating mechanism is configured by the brake part operating rods 56a and 56b, the operating arms 57a and 57b, and the connecting rod 55.

  The connecting rod 55 is provided with a restraining spring 51 which is a restraining force applying means, and one end of the restraining spring 51 is held by a restraining spring holding piece 59 a fixed to the car frame member 53. The other end of the restraining spring 51 is held by a restraining spring holding piece 59 b fixed to the connecting rod 55. When the lifting lever 19a is pulled up by such a configuration, the connecting rod 55 is pulled, the restraining spring 51 is compressed between the holding pieces 59a and 59b, and the spring force of the restraining spring 51 is increased as the lifting lever 19a is pulled up. It is comprised so that it may work strongly so that 19a may be pulled down. That is, the lifting lever 19a has a structure that operates the braking portion when it is lifted by overcoming the spring force of the restraining spring 51.

  As described above, the emergency stop device according to the present embodiment includes the lifting lever 19a, the braking portions 52a and 52b, the braking portion operating rods 56a and 56b that are the braking portion operating mechanisms, the operating arms 57a and 57b, the connecting rod 55, and the deterring force applying means. It is comprised by the suppression spring 51 which is. With such a configuration, the emergency stop device is prevented from operating due to vibration or shaking that does not require the emergency stop device to be operated.

  Here, in the range from the horizontal position 62 of the lifting lever 19a to the position 61 in the downward direction, the governor operates to overcome the spring force of the restraining spring 51 to operate the braking portions 52a and 52b of the emergency stop device. It is better to have a structure. This is because when the braking portions 52a and 52b are operated within the lifting range of the lifting lever 19a, the restraining spring 51 is pulled up most, and the spring force at that time is the largest. In the present embodiment, the lifting lever 19a is held at a position 61 that is lower than the horizontal position 62 by a predetermined angle during normal operation. If the held angle at this time is θ degrees, it can be said that the force for Fsin θ does not contribute to the lifting of the lifting lever 19a, where F is the force with which the governor rope 18a pulls the lifting lever 19a. That is, the governor rope is actuated in the range from the position 61 to the horizontal position 62 until the spring force of the restraining spring 51 gradually increases and the largest restraining force for actuating the braking portions 52a and 52b is applied. This is because it is possible to gradually increase the efficiency of the force that 18a pulls up the lifting lever 19a. In particular, when the braking portion is operated, the maximum force can be exerted by configuring so that the efficiency of the force for lifting the lifting lever 19a is at or near the horizontal position 62. Thereby, a quick operation can be performed when the rope is cut. In addition, the emergency stop device can be configured to work properly in the case of an emergency that is really necessary, while preventing the emergency stop device from operating due to vibration or shaking that does not require the emergency stop device to operate. In the case of the vicinity of the horizontal position 62, it is preferable that the value of sin θ is 20 degrees or less where the value is 0.35 or less, and further that the force efficiency is very high when the value is 5 degrees or less which is 0.1 or less. Will be better.

  Further, since the rope is gripped by a normal speed governor, it can cope with the operation even if the spring force increases. However, in the configuration of the present embodiment, the speed governor rope 18a is not gripped, and the rotary inertia mass Thus, since the acceleration is converted into a force for lifting the pulling lever 19a with respect to a large acceleration, it is necessary to have a configuration in which the pulling force does not increase as much as possible, and this can be solved by the above-described configuration.

  In FIG. 5, the tension of the governor rope 18 is as follows in the normal state, where T1 is the pulling side and T2 is the non-pickup side.

T1 = T2 (1)
On the other hand, when the rope 153 is broken, a difference in tension occurs between T1 and T2, but the friction generated between the tension pulley 17a and the governor rope 18a and the rotational inertia mass 21a are abrupt in the tension pulley 17a. In order to stop the change in the rotational speed, when the upper car 12 suddenly descends, the pulling lever 19a is relatively pulled up. The normal position 61 of the pulling lever 19a at this time is below the horizontal position 62, and when the pulling lever 19a is pulled at an angle θ, the spring force of the restraining spring 51 gradually increases, but θ also approaches 0 degrees. The amount of decrease in the lifting force decreases and can be quickly increased. If the difference in tension at this time is too small, there is a risk of malfunction due to car vibration or the like.

T1 = (1.2 to 1.8) × T2 (2)
As described above, even an elevator with a short stroke can provide an elevator in which the operation delay of the safety device is improved.

  In this embodiment, the operating arms 57a and 57b have a T-shape, and are provided so that the vertical straight line portion of the T-shape faces just outward of the upper car 12, and braking is applied to the vertical straight line portion. Are provided so as to hold the part actuating rods 56a and 56b. The vertical straight line part holding the brake actuating part actuating rods 56a and 56b, the upper end of the actuating arm 57a connected by the connecting rod 55, and the action arm 57b It is good also as L shape which provided the lower end. In this case, the operating arms 57a and 57b are not provided symmetrically as in the present embodiment, but are provided symmetrically.

  In the present embodiment, the configuration of the lower car 13 is the same as that shown in FIG.

  As described above, the present embodiment is configured to add rotational inertia mass to the tension pulleys installed on the upper car and the lower car that can move in the opposite directions in the car frame, and the lifting lever of the emergency stop device Is configured to operate in the range from horizontal to down, and the rope tension can be adjusted in the range of 1.2 times to 1.8 times by friction with the rope of the tension pulley. The emergency stop device can be operated with high response by the inertial force generated in accordance with the acceleration of the car falling exceeding the normal elevator acceleration generated when the rope driving the wheel is cut.

  In the emergency stop device and elevator device of the present embodiment configured as described above, when the rope is cut for some reason and the fall acceleration occurs in the cage, the effect of the rotary inertia mass added to the tension pulley of the governor An inertial force is applied to the governor rope connected to the emergency stop device, and the emergency stop device can be operated. Further, by making the rope tension as described above, the emergency stop device can be configured without malfunctioning at a small acceleration of the car.

  Therefore, the present embodiment is configured to detect the acceleration of the fall of the car, and even when the governor body is not in operation, the emergency stop device is operated by applying inertial force to the governor rope, and in normal traveling The emergency stop device does not malfunction at the acceleration of.

  Thus, it is possible to reliably detect the acceleration of the car falling when the rope that drives the upper car and the lower car of the double-deck elevator in this embodiment is cut, thereby ensuring the safety of passengers.

  In the description of the present invention, the present embodiment has been described by taking a double deck elevator as an example. Certainly, when the emergency stop device according to the present embodiment is applied to the upper car 12 and the lower car 13 which are the cars in the car frame 2 with a very short ascending / descending stroke, it is assumed that a normal speed governor cannot cope with the car. It is very effective because it can cope with the fall of the water. However, not only a double deck elevator but also an elevator device to which the emergency stop device of the present invention is applied is effective for raising the response at the time of abnormality of the emergency stop device. Is also possible.

DESCRIPTION OF SYMBOLS 1 Hoistway 2 Car frame 3 Main rope 4 Counterweight 5 Machine room 6 Drive apparatus 7 Baffle 8 Control apparatus 9 Cable 10 Guide member 11, 14 Guide rail 12 Upper car 13 Lower car 15 Driving means 16a, 16b Speed governor 17a , 17b Tension pulleys 18a, 18b Speed governor ropes 19a, 19b Lifting levers 21a, 21b Rotating inertia mass 51 Suppression springs 52a, 52b Braking part 53 Car frame member 54 Anti-vibration rubber 55 Connecting rods 56a, 56b Braking part actuating rod 57a, 57b Actuating arm 58a, 58b Support point 60 Car room 62 Horizontal position 151 Motor 152 Car lower pulley 153 Rope

Claims (5)

In the emergency stop device that is provided in the car and operates by pulling up the lifting lever,
The emergency stop device is provided in the braking portion that brakes the car, the braking portion operating mechanism that operates when the lifting lever is pulled up to operate the braking portion, and the lifting portion operating mechanism. Depressing force applying means for applying a force in a direction opposite to the direction in which the pulling lever is lifted to the pulling lever,
The lifting lever is configured to be rotatable around a fulcrum, and is configured such that a rotational force that rotates around the fulcrum is applied to one end.
The lifting lever is held at a position below a predetermined angle from a position where the one end to which the fulcrum and the rotational force are applied in a normal state is horizontal, and the lifting lever is pulled up so that the fulcrum and the rotational force are The braking section operates in a range until the one end to be applied is in a horizontal position ,
A speed governor rope wound around a speed governor and a tension pulley is connected to the one end to which the rotational force of the pulling lever is applied, and the rotational force rotating around the fulcrum by the speed governor rope is Given to the lifting lever,
A disc-shaped rotary inertia mass is added to be concentric with the governor rope wrapping portion or the tension pulley of the governor or both the governor rope wrapping portion and the tension pulley. Features emergency stop device. In Claim 1, both the said governor rope wrapping part or the said tension pulley, or both the said governor rope wrapping part and the said tension pulley can attach the said rotational inertial mass, The said rotational inertial mass Adjusting the inertial force acting on the governor rope by adjusting the number of the emergency stop device. 2. The emergency stop device according to claim 1, wherein the position where the brake operating mechanism is operated is at or near a position where the lifting lever is horizontally provided with the fulcrum and the one end to which the rotational force is applied. . In an elevator apparatus provided with a car and a hoisting machine for raising and lowering the car,
The car is provided with an emergency stop device that operates by pulling up the lifting lever,
The emergency stop device is provided in the braking portion that brakes the car, the braking portion operating mechanism that operates when the lifting lever is pulled up to operate the braking portion, and the lifting portion operating mechanism. Depressing force applying means for applying a force in a direction opposite to the direction in which the pulling lever is lifted to the pulling lever,
The lifting lever is configured to be rotatable around a fulcrum, and is configured such that a rotational force that rotates around the fulcrum is applied to one end.
The lifting lever is held at a position below a predetermined angle from a position where the one end to which the fulcrum and the rotational force are applied in a normal state is horizontal, and the lifting lever is pulled up so that the fulcrum and the rotational force are The braking part operation mechanism is operated at a position where the one end to be applied is horizontal, or in the range up to that point ,
A speed governor rope wound around a speed governor and a tension pulley is connected to the one end to which the rotational force of the pulling lever is applied, and the rotational force rotating around the fulcrum by the speed governor rope is Given to the lifting lever,
A disc-shaped rotary inertia mass is added to be concentric with the governor rope wrapping portion or the tension pulley of the governor or both the governor rope wrapping portion and the tension pulley. Elevator device characterized. 5. The car frame according to claim 4 , wherein the car frame moves up and down in the hoistway, the upper car is arranged in the car frame so as to be able to move up and down in the car frame, and the car frame can be moved up and down in the car frame. The upper car or the lower car in a double deck elevator apparatus comprising a lower car disposed below the upper car, a car driving device that raises and lowers the upper car and the lower car in the car frame, Or the elevator apparatus characterized by carrying out both the said upper car and the said lower car as the said riding car.

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