JP5191825B2 - Self-propelled elevator - Google Patents

Description

  The present invention relates to a self-propelled elevator in which a driving device is mounted on a counterweight.

  In an elevator, a rope is wound around a sheave of a hoist installed in a machine room or a hoistway, and a car is lifted and lowered by a frictional force between the sheave and the rope. There is a self-propelled elevator equipped with. The elevator of such a system is generally equipped with a driving device that has a heavy weight and requires installation space on a counterweight that inevitably requires weight in terms of function as an elevator, There is an advantage that it is not necessary to install a hoisting machine in both the machine room and the hoistway, and space saving and cost reduction can be realized. However, since the drive device itself for driving the elevator moves up and down together with the car and the counterweight, it has a property that it is difficult to obtain traction, so it is a problem to ensure sufficient traction stably. It was.

In order to solve such a problem, conventionally, the traction of a self-propelled elevator is secured by a resin-coated steel rope (see, for example, Patent Document 1), and the winding angle of the rope is increased by using a turning pulley. In order to secure traction, a technique has been proposed (for example, see Patent Document 2).
Patent WO2004 / 080878 Japanese Patent No. 3426352

  However, the above-mentioned former has a problem that a special rope coated with a resin is required, resulting in an increase in cost. In the latter case, the turning angle of the rope is increased by using a turning pulley, but the number of times the rope is bent or the reverse bending portion is generated, which may reduce the life of the rope. .

  The present invention has been made from the actual state of the above-described prior art, and its purpose is to ensure the necessary traction with a relatively simple structure without requiring a special rope or the wrapping angle of the rope to be increased. It is to provide a self-propelled elevator that can be used.

  In order to achieve the above object, the invention according to claim 1 of the present invention includes a car and a counterweight that elevate and lower the hoistway, a car-side guide rail that guides the elevating of the car, and the elevating and lowering of the counterweight. A counterweight-side guide rail that guides the motor, a motor mounted on the counterweight, and a drive device that is driven by the motor and includes a drive roller that is slidably contacted with the counterweight-side guide rail. It is characterized in that traction is generated using inertial force generated when accelerating / decelerating.

  In the invention according to claim 1 of the present invention configured as described above, it is generated at the time of acceleration / deceleration, focusing on the fact that the traction for raising and lowering the elevator is mainly required when the elevator is accelerated / decelerated. Traction is generated by utilizing the inertial force that is a natural force, and it is not necessary to increase the special rope or the wrapping angle of the rope as in the conventional case.

  According to a second aspect of the present invention, the traction generating weight attached to the counterweight so as to be capable of relative movement, and the inertial force generated in the traction generating weight when the elevator is accelerated or decelerated are driven. And a transmission means for pressing the roller against the counterweight-side guide rail.

  In the invention according to claim 2 of the present invention configured as described above, an inertial force is generated in the traction generating weight in accordance with the acceleration / deceleration of the elevator, and this inertial force is transmitted to the counterweight side guide rail of the drive roller by the transmission means. Use pressing force. As a result, it is possible to ensure the traction necessary for appropriately driving the elevator.

  The invention according to claim 3 of the present invention is characterized in that the traction generating weight includes a first weight for generating traction in accordance with the acceleration and descending deceleration of the counterweight, and the descending acceleration and ascent of the counterweight. A second weight for generating traction in response to deceleration, and the transmission means is attached to one end of the counterweight so as to be rotatable via a pin, and the drive roller is attached to the other end. An arm that is connected to the first weight with one end connected to one side of a horizontal portion provided at one end of the arm via a slide portion, and one end connected to the first weight. The second weight is connected to the second weight through a slide portion, and the other end is provided with a second rod connected to the other side of the horizontal portion provided at one end of the arm.

  In the invention according to claim 3 of the present invention configured as described above, a downward inertia force acts on the first weight due to the acceleration and deceleration of the counterweight. Accordingly, a moment about the pin acts on the arm via the first rod, and the driving roller attached to the other end of the arm is pressed against the counterweight side guide rail. In addition, the downward inertia force acts on the second weight due to the upward acceleration and downward deceleration of the counterweight, but since one end of the second rod is connected to the second weight via the slide portion, The force acting on the second weight escapes without being transmitted to the second rod, and the pressing of the drive roller to the counterweight-side guide rail is not hindered. On the other hand, an upward inertia force acts on the second weight due to the downward acceleration and the upward deceleration of the counterweight. Accordingly, a moment about the pin acts on the arm via the second rod, and the driving roller attached to the other end of the arm is pressed against the counterweight side guide rail. In addition, an upward inertia force acts on the first weight due to the downward acceleration and the upward deceleration of the counterweight, but one end of the first rod is connected to the first weight via the slide portion, The force acting on the first weight escapes without being transmitted to the first rod, and the pressing of the driving roller to the counterweight side guide rail is not hindered. As a result, it is possible to secure the traction necessary for appropriately driving the elevator with a relatively simple structure.

  According to the present invention, the traction is generated using the inertial force that is a natural force generated at the time of acceleration / deceleration, and it is not necessary to increase the winding angle of a special rope or rope, and The traction required for driving the elevator appropriately with a simple structure can be ensured. Therefore, it is possible to realize a self-propelled elevator in consideration of energy saving that does not cause an increase in cost and a decrease in the life of the rope.

  Embodiments of a self-propelled elevator according to the present invention will be described below with reference to the drawings.

  FIG. 1 is an overall schematic configuration diagram showing an embodiment of a self-propelled elevator according to the present invention, FIG. 2 is a main configuration diagram of the present embodiment showing a state when the counterweight is raised and decelerated, and FIG. It is a principal part block diagram of this embodiment which shows the state at the time of the descent acceleration of a counterweight, and a descent | fall deceleration.

  As shown in FIG. 1, the self-propelled elevator is connected to a car 1 and a counterweight 2 that move up and down the hoistway, one end is connected to the car 1, and the other end is connected to the counterweight 2, and an intermediate portion thereof is a pulley. Paired with a rope 5 wound around 3, 4, a car side guide rail 6 that guides the raising and lowering of the car 1, a counterweight side guide rail 7 that guides the raising and lowering of the counterweight 2, and the counterweight 2. A motor 8a, a drive roller 8e that is driven by the motor 8a via a pulley 8b, a belt 8c, and a pulley 8d, that is in sliding contact with the counterweight-side guide rail 7, and a brake 8f that brakes the drive roller 8e. And a drive device 8 provided. 2 and 3, the counterweight 2 includes a weight adjusting weight 2a and a frame 2b that supports the weight adjusting weight 2a.

  And the self-propelled elevator of this embodiment generates traction using the inertial force generated when the elevator accelerates or decelerates. That is, a traction generating weight 9 attached in pairs to the frame 2b of the counterweight 2 and a pair of traction generating weights 9 provided in the counterweight 2 for traction generation when the elevator accelerates or decelerates. A transmission means 10 is provided which uses the inertial force generated in the weight 9 as a pressing force of the drive roller 8e against the counterweight-side guide rail 7.

  The traction generating weight 9 includes a first weight 9a for generating traction in accordance with the upward acceleration and downward deceleration of the counterweight, and a first weight for generating traction in accordance with the downward acceleration and upward deceleration of the counterweight 2. 2 weights 9b. The second weight 9b is attached to the frame 2b via the elastic body 11.

  One end of the transmission means 10 is rotatably attached to the counterweight 2 via a pin 10a, and the other end is connected to the arm 10b to which the driving roller 8e is attached, and one end is connected to the first weight 9a. A slide part, for example, a first rod 10e connected to one side of a horizontal part 10b1 provided at the other end at one end of the arm 10b, for example, via a long hole 10c and a pin 10d, and a slide part at one end to the second weight 9b For example, the second rod 10i is connected via the pin 10h to the other side of the horizontal portion 10b1 provided at the other end of the arm 10b while being connected via the long hole 10f and the pin 10g. Yes.

  Here, the operation of the self-propelled elevator according to the present embodiment when the counterweight 2 is ascending and decelerating is described with reference to FIG.

  A downward inertia force acts on the first weight 9a by the acceleration and deceleration of the counterweight 2 ascending and descending. In response to this, the pin 10d is pushed through the first rod 10e, and a moment acts on the arm 10b around the pin 10a, and the driving roller 8e attached to the other end of the arm 10b receives the counterweight side guide. Pressed against the rail 7. At this time, a downward inertial force also acts on the second weight 9b due to the upward acceleration and the downward deceleration of the counterweight 2, but one end of the second rod 10i passes through the elongated holes 10f and 10g to the second weight 9b. Therefore, the force acting on the second weight 9b escapes without being transmitted to the second rod 10i, and the pressing of the driving roller 8e to the counterweight-side guide rail 7 is prevented. There is no.

  Next, the operation of the self-propelled elevator according to the present embodiment when the counterweight 2 is lowered and accelerated is described with reference to FIG.

  An upward inertia force acts on the second weight 9b by the downward acceleration and the upward deceleration of the counterweight 2. In response to this, the second rod 10i is pulled upward via the pin 10g. At the same time, the pin 10 h is pulled upward, and a moment acts on the arm 10 b around the pin 10 a, and the drive roller 8 e attached to the other end of the arm 10 b is pressed against the counterweight side guide rail 7. At this time, an upward inertial force is also exerted on the first weight 9a by the downward acceleration and the upward deceleration of the counterweight 2, but one end of the first rod 10e is provided with a long hole 10c and a pin 10d on the first weight 9a. Since the force acting on the first weight 9a is not transmitted to the first rod 10e, the force is applied to the first weight 9a, so that the driving roller 8e is prevented from being pressed against the counterweight-side guide rail 7. There is nothing.

  According to the present embodiment, the traction is generated using an inertial force that is a natural force generated at the time of acceleration / deceleration, and it is not necessary to increase a special rope or a winding angle of the rope, and The traction necessary for driving the elevator appropriately with a simple structure can be ensured. Therefore, it is possible to realize a self-propelled elevator in consideration of energy saving that does not cause an increase in cost and a decrease in the life of the rope.

  In the present embodiment, the driving force from the motor 8a is transmitted to the driving roller 8e by the belt 8c, but may be transmitted by a chain, a gear, or the like. Further, a direct drive method may be employed in which the rotation shaft of the motor 8a is directly connected to the rotation shaft of the drive roller 8e.

1 is an overall schematic configuration diagram showing an embodiment of a self-propelled elevator according to the present invention. It is a principal part block diagram of this embodiment which shows the state at the time of the rising acceleration of a counterweight, and a descent | fall deceleration. It is a principal part block diagram of this embodiment which shows the state at the time of the descent acceleration of a counterweight, and a descent | fall deceleration.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Car 2 Balance weight 2a Weight adjusting weight 2b Frame 3 Pulley 4 Pulley 5 Rope 6 Car side guide rail 7 Balance weight side Guide rail 8 Drive device 8a Motor 8b Pulley 8c Belt 8d Pulley 8e Drive roller 8f Brake 9 For generating traction Weight 9a First weight 9b Second weight 10 Transmission means 10a Pin 10b Arm 10b1 Horizontal portion 10c Slot (slide portion)
10d pin (slide part)
10e First rod 10f Slot (slide part)
10g pin (slide part)
10h pin 10i second rod

Claims (3)

  A car and a counterweight for raising and lowering the hoistway; a car side guide rail for guiding the raising and lowering of the car; a counterweight side guide rail for guiding the raising and lowering of the counterweight; a motor mounted on the counterweight; And a drive device provided with a drive roller driven by the motor and in sliding contact with the counterweight-side guide rail, and generating traction using inertial force generated when the elevator is accelerated or decelerated. A self-propelled elevator.   A traction generating weight attached to the counterweight so as to be capable of relative movement, and an inertial force generated in the traction generating weight when the elevator is accelerated / decelerated, the pressing force of the drive roller against the counterweight side guide rail The self-propelled elevator according to claim 1, further comprising a transmission means.   The traction generating weight includes a first weight for generating traction in accordance with the upward acceleration and downward deceleration of the counterweight, and a first weight for generating traction in accordance with the downward acceleration and upward deceleration of the counterweight. The transmission means has one end rotatably attached to the counterweight via a pin and an arm on which the drive roller is attached to the other end, and one end the first weight. And a first rod connected to one side of a horizontal portion provided at one end of the arm via a slide portion and one end connected to the second weight via a slide portion. The self-propelled elevator according to claim 2, further comprising: a second rod connected to the other side of the horizontal portion provided at one end of the arm.

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