JP5205428B2 - Double deck elevator device - Google Patents

Description

  The present invention relates to a double deck elevator apparatus having two upper and lower cars in a car frame.

  There are two upper and lower cars in the car frame, the driving means is installed on the upper part of the upper car, and the ropes are connected to the pulleys provided below the upper car and the lower car connected to the driving means by the rope. There is known a double deck elevator apparatus that is configured to drive an upper car and a lower car by driving means.

  As applied to the double-deck elevator device constructed as described above, a detection roller is used to detect the fall of the car when the rope that drives the upper car and the lower car is broken. In some cases, the detection roller is displaced in response to the abnormal loosening of the rope and the rope being cut, and the emergency stop device is operated (for example, see Patent Document 1).

  As a general elevator speed governor, the speed of the car is detected from the speed of the speed governor rope, and when the speed of the car reaches a certain level, the speed governor stops the speed governor rope. Some have operated an emergency stop device by operating an emergency stop device operation switch with a rope. Some double deck elevator devices do not use ropes when driving the upper and lower cars.

JP 2007-331871 A (paragraph numbers 0021 to 0023, FIG. 4 etc.)

  However, in the case where the travel of the car is extremely short compared to the travel of the car frame that goes up and down the hoistway, such as the upper car and the lower car of a double deck elevator, the ropes that drive the upper car and the lower car Even if the rope is not used to drive the upper car and the lower car, even if the upper car or the lower car drops or descends at a similar speed for some reason, the car will fall or at a similar speed. Even if the descent is detected by the speed governor and the emergency stop device is operated, there is a possibility that the shock absorber may collide with the shock absorber before the speed governor operates.

  The present invention has been made in view of the above-described problems in the prior art, and its purpose is a double deck capable of operating a car emergency stop device when an upper car and a lower car are dropped or lowered with similar acceleration. It is to provide an elevator apparatus.

  In order to achieve the above object, a double deck elevator apparatus according to the present invention includes a car frame that moves up and down in a hoistway, and an upper car that is arranged in the car frame so as to be able to move up and down in the car frame. A double comprising a lower car disposed below the upper car in the car frame so as to be movable up and down in the car frame, and a car driving device for raising and lowering the upper car and the lower car in the car frame. In the deck elevator, an upper car speed governor comprising an upper car speed governor rope that moves with the movement of the upper car and an upper car speed governor rope pulley around which the upper car speed governor rope is wound. An upper car emergency stop device is provided on the upper car, and an operation switch of the upper car emergency stop device and the upper car speed governor rope are connected to each other. The speed rope is And an inertial force applying means for driving the upper car emergency stop device by operating an operation switch of the upper car emergency stop device when the upper car is moved up and down at a degree or more. The car is driven at the predetermined acceleration or less.

  The double deck elevator apparatus according to the present invention includes a car frame that moves up and down in a hoistway, an upper car that is arranged in the car frame so as to be movable up and down in the car frame, and a car frame that moves up and down. In the double deck elevator, comprising: a lower car disposed below the upper car in the car frame so as to be capable of raising and lowering; and a car driving device for raising and lowering the upper car and the lower car in the car frame. A lower car speed governor mechanism comprising a lower car speed governor rope that moves along with the movement of the lower car and a lower car speed governor rope pulley around which the lower car speed governor rope is wound. A lower car emergency stop device is provided in the car, the operation switch of the lower car emergency stop device and the lower car governor rope are connected, and the lower car governor rope has a predetermined The lower basket above the acceleration And an inertial force imparting means for operating an operation switch of the lower car emergency stop device to operate the lower car emergency stop device when the elevator car is moved up and down, and the car drive device moves the lower car below the predetermined acceleration. It is characterized by being driven by.

  ADVANTAGE OF THE INVENTION According to this invention, the double deck elevator apparatus which can operate the emergency stop apparatus of a cage | basket | car when the upper cage | basket | car and a lower cage | basket | car of a double deck elevator fall or descend | fall with the acceleration which is similar to this can be provided. , Can ensure the safety of passengers.

It is a schematic block diagram of the whole double deck elevator apparatus of this invention. It is a principal part schematic block diagram which shows the 1st Example of the double deck elevator apparatus of this invention. It is a principal part schematic block diagram which shows the 2nd Example of the double deck elevator apparatus of this invention.

  Hereinafter, embodiments of a double deck elevator apparatus according to the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a schematic configuration diagram of the entire double deck elevator apparatus of the present invention. As shown in FIG. 1, the double deck elevator apparatus according to the present embodiment includes 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. And a counterweight 4 that moves up and down in the hoistway 1, is installed in a machine room 5 above the hoistway 1, the main rope 3 is wound around, and a drive device 6 that drives the main rope 3, a machine There is a deflecting wheel 7 disposed in the vicinity of the driving device 6 in the chamber 5 and around which the main rope 3 is wound, and a control device 8 disposed in the machine room 5 and controlling 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 a schematic diagram showing the main part of a first embodiment of the double deck elevator apparatus according to the present invention. As shown in FIG. 2, the car frame 2 includes an upper frame 2 a, an intermediate frame 2 b, a lower frame 2 c, and a pair of left and right vertical frames 2 d, and a hoistway 1 through guide members 10 arranged at four corners thereof. Ascending and descending in the hoistway is guided by the car frame guide rail 11 erected on the side. 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 car driving device 15 for driving the lower car 13.

  The car driving device 15 is spanned over, for example, a motor 151, a plurality of pulleys 152 provided respectively below the upper car 12 and the lower car 13, a sheave 151 a and a pulley 152 of the motor 151, and one end of the car driving device 15. And a plurality of ropes 153 whose other ends are fixed to the intermediate frame 2b. That is, one end of the rope 153 is fixed to the upper frame 2a and is wound around the pulley 152 of the upper car to suspend the upper car 12, and is then wound around the sheave 151a and is wound around the pulley 152 of the lower car. The car 13 is suspended and the other end is fixed to the intermediate frame 2b. With such a configuration, when the motor 151 is driven, the sheave 151a is rotated, the rope 153 is driven, and the upper car 12 and the lower car 13 are moved up and down in the car frame 2 in opposite directions.

  Furthermore, the double deck elevator apparatus according to the present embodiment includes an upper car governor rope 18a that moves with the movement of the upper car, and an upper car governor rope pulley that is wound around the upper car governor rope 18a. And a governor tension pulley 17a disposed below the governor 16a. A general governor can be used as the governor 16a. The upper cage governor rope 18a is bridged between the pulley of the governor 16a and the governor tension pulley 17a, that is, between the upper cage governor rope pulley, and both ends of the governor rope 18a are emergency-stopped. By connecting to the device connecting member 19a, it is installed endlessly and transmits the movement of the upper car 12 to the governor 16a.

  The upper car 12 is provided with an upper car safety device 22a. In this embodiment, the emergency stop device connecting member 19a also serves as an operation switch of the upper car safety device 22a. In FIG. 2, the upper car 12 is provided with upper car emergency stop devices 22a on both the left and right sides. When the emergency stop device connecting member 19a, which is an operation switch, is actuated, both the left and right upper car emergency stop devices 22a are provided. Operate.

  With this configuration, when there is a large difference in the relative movement amount between the upper car governor rope 18a and the upper car 12, an emergency switch that is an operation switch of the upper car emergency stop device 22a is provided on the upper car governor rope 18a. Since the stop device connecting member 19a is connected, the upper car emergency stop device 22a operates. The upper car emergency stop device 22a in the present embodiment is configured to stop the movement of the upper car 12 by grasping the guide rail 14 installed in the car frame.

  In this embodiment, an inertia mass 20a is added to the upper car governor rope 18a. With such a configuration, for example, when an abnormality occurs, when the upper car 12 operates at a speed higher than a predetermined speed, the governor 16a grasps the upper car governor rope 18a, and the upper car governor rope 18a moves. The upper car emergency stop device connecting member 19a is pulled up by the relative movement of the upper car 12 and the upper car emergency stop device 22a is actuated to stop the movement of the upper car 12. Further, for example, when the rope 153 is cut and the upper car 12 is dropped, the emergency stop device connecting member 19a connected to the upper car 12 tries to pull down the governor rope 18a. Then, the upper car governor rope 18a tries to pull up the inertial mass 20a added to the governor rope 18a via the car governor rope pulley. However, the upper car speed governor rope 18a provided with the inertial mass 20a can move together with the movement of the upper car 12 when the upper car 12 tries to operate at an acceleration smaller than a certain acceleration. When the upper car 12 tries to move at an acceleration higher than a certain acceleration, a large tension is applied to the governor rope 18a, and the emergency stop device connecting member 19a is operated to operate the emergency stop device.

  In this way, the upper car speed control mechanism is connected to the upper car emergency stop device which is an operation switch of the upper car emergency stop device 22a when the upper car governor rope 18a moves up and down at a predetermined acceleration or higher. An inertial mass 20a is provided as an inertial force applying means for driving the member 19a to operate the upper car safety device 22a. When the motor 151 is rotated during normal operation and the rope 153 is driven by the sheave 151a, the upper car 12 is driven at a predetermined acceleration or less, so that the upper car emergency stop device 22a is not operated. When the upper car 12 is operated at a certain acceleration or higher, such as when an abnormality such as a rope breakage of the upper car occurs, the upper car emergency stop device 22a is operated with good responsiveness.

  In the present embodiment, the lower car 13 has the same configuration. That is, in the car frame 2, a lower car governor rope 18 b that moves as the lower car 13 moves, a speed governor 16 b that is a lower car governor rope pulley around which the lower car governor rope 18 b is wound, and the lower part thereof. And a governor tension pulley 17b disposed in the lower part of the car. Also, the lower car safety device 22b is provided in the lower car 13, and the operation switch of the lower car safety device 22b is also used as the safety device connecting member 19b. The speed governor 16b is the same as the speed governor 16a described in the upper car 12, and the lower car speed control mechanism and the lower car emergency stop device 22b are also used for the upper car speed control mechanism and the upper car emergency. The operation is the same as described in the stopper device 22a.

  Since the inertia mass 20b is added to the lower car governor rope 18b, when the lower car 13 operates at a speed higher than a predetermined speed when some abnormality occurs, the governor 16b becomes the lower car governor rope 18b. The lower car speed governor rope 18b is stopped and the lower car 13 is relatively operated, whereby the lower car emergency stop device connecting member 19b is pulled up, and the lower car emergency stop device 22b is operated. The movement of the car 13 is stopped. For example, when the rope 153 is cut and the lower car 13 is dropped, the lower car governor rope 18b to which the inertial mass 20b is applied is lowered when the lower car 13 tries to operate at an acceleration smaller than a certain acceleration. Although it is possible to move together with the movement of the car 13, if the lower car 13 tries to move at an acceleration exceeding a certain acceleration, a large tension is applied to the governor rope 18b to operate the emergency stop device connecting member 19b. The emergency stop device 22b is operated.

  In this manner, the lower car speed control mechanism also drives the lower car emergency stop device connecting member 19b, which is an operation switch of the lower car emergency stop device 22b, when the lower car 13 moves up and down at a predetermined acceleration or higher. The lower cage governor rope 18b is provided with an inertial mass 20b as inertial force applying means for operating the emergency stop device 22b. When the rope 151 is driven by the sheave 151a by rotating the motor 151 in the normal state, the lower car emergency stop device 22b is not operated because the lower car 13 is driven at a predetermined acceleration or less. When the lower car 13 is operated at a certain acceleration or higher where an abnormality such as a rope breakage of the lower car has occurred, the lower car emergency stop device 22b is operated with good responsiveness.

  In this embodiment, the upper car speed adjusting mechanism, the lower car speed adjusting mechanism, the upper car emergency stop device 22a, and the lower car emergency stop device 22b are provided in both the upper car 12 and the lower car 13 in the car frame 2. And explained. If both the upper car 12 and the lower car 13 are provided in this way, the safety of both cars is improved. In particular, as in this embodiment, when the upper car 12 and the lower car 13 are driven by the rope 153, for example, when the rope breakage occurs, both the upper car 12 and the lower car 13 fall. Thus, it is preferable to provide the upper car speed control mechanism, the lower car speed control mechanism, the upper car emergency stop device 22a, and the lower car emergency stop device 22b in both the upper car 12 and the lower car 13.

  However, since the method of driving the upper car 12 and the lower car 13 is not limited to that using a rope, for example, when the possibility of dropping either the upper car 12 or the lower car 13 is extremely small or not Alternatively, the upper car speed adjusting mechanism or the lower car speed adjusting mechanism and the upper car emergency stop device 22a or the lower car emergency stop device 22b may be provided only in one of the cars that may be dropped. With this configuration, the structure of the car frame 2 can be simplified, the weight and the like can be reduced, and the manufacturing cost, manufacturing efficiency, operating efficiency, and the like can be improved.

  Next, another embodiment of the present invention will be described. In addition, in a present Example, about the component similar to Example 1, the same code | symbol is attached | subjected and description is abbreviate | omitted. FIG. 3 is a schematic diagram showing the main part of a second embodiment of the double deck elevator apparatus according to the present invention. In the double deck elevator apparatus according to the second embodiment, rotational inertia masses 21a and 21b as inertial force applying means are provided on the governor tension pulleys 17a and 17b.

  That is, the emergency stop device connecting members 19a and 19b connected to the upper car 12 or the lower car 13 try to pull down the governor ropes 18a and 18b. Accordingly, the governor ropes 18a and 18b attempt to rotate the governor tension pulleys 17a and 17b via the governors 16a and 16b. At this time, due to the rotational inertial mass added to the governor tension pulleys 17a and 17b, the upper car governor rope 18a or the lower car governor rope 18b moves up and down at a predetermined acceleration or higher. In this case, an inertial force is generated and tension is applied to the governor ropes 18a and 18b, and the upper cage is operated by operating the emergency stop device connecting members 19a and 19b which are operation switches of the upper cage emergency stop device 22a or the lower cage emergency stop device 22b. The safety device 22a or the lower cage safety device 22b is operated. Even if this rotational inertial mass is added to the rotating bodies of the governor bodies 16a and 16b, the same effect is produced.

  As described above, the inertial force applying means can be appropriately selected and used depending on the structure of the car frame 2 and the required performance and size.

  As described above, the present invention has an inertial mass, or a governor rotor or governor tension pulley on a governor rope installed in an upper car and a lower car that can move in the opposite directions in the car frame. By adding rotational inertial mass to the car, the emergency stop device is operated with high response by the inertial force generated according to the acceleration of the car falling over the normal elevator acceleration that occurs when the rope driving the upper and lower cars is broken. be able to.

  In the present invention configured as described above, when the rope is cut for some reason and the fall acceleration occurs in the cage, the inertia mass added to the governor rope, or the governor rotating body or the tension pulley of the governor is added. Due to the effect of the rotating inertial mass, the inertial force is applied to the governor rope connected to the car safety device, and the safety device can be operated.

  Moreover, since the present invention detects the acceleration of the fall of the car, the emergency stop device can be operated by applying an inertial force to the governor rope even before the governor is in operation. In addition, it is possible to reliably detect the car falling when the rope driving the upper car and the lower car is broken.

DESCRIPTION OF SYMBOLS 1 Hoistway 2 Car frame 3 Main rope 4 Counterweight 5 Machine room 6 Driving device 7 Baffle 8 Control device 9 Cable 10 Guide member 11 Car frame guide rail 12 Upper car 13 Lower car 14 Guide rail 15 Car driving devices 16a and 16b Speed governor 17a, 17b Speed governor tension pulley 18a Upper car speed governor rope 18b Lower car speed governor rope 19a Upper car emergency stop device connecting member 19b Lower car emergency stop device connecting member 20a, 20b Inertial mass 21a, 21b Rotation Inertial mass 151 Motor 152 Pulley 153 Rope

Claims (7)

A car frame that moves up and down in the hoistway, an upper car that is arranged in the car frame so as to be able to move up and down in the car frame, and the upper car in the car frame that can be raised and lowered in the car frame In a double deck elevator comprising a lower car arranged below the car, a car driving device for raising and lowering the upper car and the lower car in the car frame,
An upper car speed control mechanism comprising an upper car speed governor rope that moves along with the movement of the upper car, and an upper car speed governor rope pulley around which the upper car speed governor rope is wound; An upper car safety device is provided in the upper car, and an operation switch of the upper car safety device and the upper car governor rope are connected,
In the upper car speed control mechanism, when the upper car governor rope moves up and down at a predetermined acceleration or higher, the upper car emergency stop device is driven by driving an operation switch of the upper car emergency stop device. Including an inertial force applying means for operating
The double deck elevator apparatus, wherein the car driving device drives the upper car below the predetermined acceleration. 2. The double-deck elevator apparatus according to claim 1, wherein a lower car governor rope that moves with the movement of the lower car and a lower car governor in which the lower car governor rope is wound in the car frame. A lower car speed control mechanism comprising a rope pulley, a lower car emergency stop device is provided in the lower car, and an operation switch of the lower car emergency stop device is connected to the lower car speed governor rope;
The lower car speed control mechanism drives the operation switch of the lower car emergency stop device to drive the lower car emergency stop device when the lower car moves up and down at a predetermined acceleration or higher. Including an inertial force applying means for operating
The double deck elevator apparatus, wherein the car driving device drives the upper car and the lower car below the predetermined acceleration. A car frame that moves up and down in the hoistway, an upper car that is arranged in the car frame so as to be able to move up and down in the car frame, and the upper car in the car frame that can be raised and lowered in the car frame In a double deck elevator comprising a lower car arranged below the car, a car driving device for raising and lowering the upper car and the lower car in the car frame,
A lower car speed control mechanism comprising a lower car speed governor rope that moves along with the movement of the lower car and a lower car speed governor rope pulley around which the lower car speed governor rope is wound, in the car frame, A lower car emergency stop device is provided in the lower car, and an operation switch of the lower car emergency stop device and the lower car governor rope are connected,
The lower car speed control mechanism drives the operation switch of the lower car emergency stop device to drive the lower car emergency stop device when the lower car moves up and down at a predetermined acceleration or higher. Including an inertial force applying means for operating
2. The double deck elevator apparatus according to claim 1, wherein the car driving device drives the lower car below the predetermined acceleration. 4. The double deck elevator apparatus according to claim 3, wherein an upper car governor rope that moves along with the movement of the upper car and an upper car governor in which the upper car governor rope is wound around the car frame. An upper car speed control mechanism comprising a rope pulley, an upper car emergency stop device is provided in the upper car, and an operation switch of the upper car emergency stop device is connected to the upper car speed governor rope;
In the upper car speed control mechanism, when the upper car governor rope moves up and down at a predetermined acceleration or higher, the upper car emergency stop device is driven by driving an operation switch of the upper car emergency stop device. Including an inertial force applying means for operating
The double deck elevator apparatus, wherein the car driving device drives the upper car and the lower car below the predetermined acceleration.   5. The double deck elevator apparatus according to claim 1, wherein the inertial force applying means is an inertial mass added to a governor rope. 6.   5. The double deck elevator apparatus according to claim 1, wherein the inertial force applying means is a rotary inertia mass added to the upper cage governor rope pulley. 6.   4. The double deck elevator apparatus according to claim 2, wherein the inertial force applying means is a rotary inertia mass added to the lower cage governor rope pulley. 5.

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