JP4577333B2 - Traction elevator - Google Patents

Description

  The present invention relates to a traction elevator, and more particularly to a traction elevator in which a drive machine device including a traction sheave is installed on an upper portion of a guide rail.

  A conventional traction sheave drive elevator is basically based on a layout in which a machine room is provided at the uppermost part of the elevator shaft, and a drive machine device is disposed therein. However, this basic form significantly restricted the design of the building with respect to the space utilization and appearance of the entire building.

  Therefore, in recent years, a traction elevator in which a hoisting machine device including a hoisting motor is installed in an elevator shaft has been proposed as a solution for increasing the degree of freedom in building design and using it efficiently and economically. ing. For example, according to the traction elevator described in JP-A-8-208152, a machine base is provided at the upper end of the counterweight guide rail between the cage and the wall of the elevator shaft, and the drive machine device is installed thereon. Moreover, the drive machine is secured to the shaft wall or ceiling by a reinforcing element that absorbs horizontal force but does not substantially absorb any vertical support force with respect to the elevator shaft.

  In addition, as an example of a solution to further effectively use the entire building space, for example, as disclosed in JP-A-8-40665, a machine panel (electric control device) is installed beside the entrance of the top floor platform. is doing.

JP-A-8-208152 JP-A-8-40665

  The conventional technology has the following problems.

  In other words, when a device that controls the drive motor of an elevator and a device that issues an operation command in response to a hall call or car call is installed at the side of the entrance of the top floor landing, the depth increases and the protrusion is seen from the landing. There was a problem that was large and undesirable from the viewpoint of design.

  An object of the present invention is to provide a traction elevator that can improve the design effect around a landing doorway.

In order to solve the above-mentioned object, the present invention comprises a car moving along a car guide rail, a counter weight moving along a counterweight guide rail, a set of hoisting ropes on which the car and the counterweight are suspended, A machine base that is disposed above the counterweight guide rail between the car and the wall of the elevator shaft and includes a traction sheave that engages with the hoisting rope and is fixed to the upper portion of the counterweight guide rail at the upper portion of the elevator shaft In a traction elevator provided with a drive machine device arranged, a control device for driving the drive machine device in the vicinity of the drive machine device is either the car guide rail or the counterweight guide rail, or the car guide. Rail and counterway Said machine base preparative guide rail fixed place, with placing the command device gives a command to the control device in the vicinity of the landing doorway below the top or uppermost, to stick the vertical load of the drive machine unit The counterweight guide rail to which is fixed is extended upward and fixed to the building beam .
Also, between the car moving along the car guide rail, the counter weight moving along the counterweight guide rail, a pair of hoisting ropes on which the car and the counterweight are suspended, and the car and the elevator shaft wall A traction sheave disposed above the counterweight guide rail and including a traction sheave that engages with the hoisting rope; and a drive machine device disposed on a machine base fixed to an upper end of the counterweight guide rail at an upper portion of an elevator shaft. In the traction elevator, a joint column is fixed to a machine base fixed to the upper end portion of the counterweight guide rail, and a controller for driving the drive machine device is fixed to the joint column in the vicinity of the drive machine device. Place the top or bottom of the landing doorway below the top With placing the command device gives a command to the controller near, in which the upper end portion of said splicing pillar fixed to the machine base to maintain the vertical load of the drive machine unit is fixed to the building beams.

  According to the above configuration, by installing a control device for driving the drive machine device in the elevator shaft, the command device installed near the entrance / exit of the landing can be made smaller and thinner, so the design around the entrance / exit The effect can be improved.

  In the traction elevator according to the present invention, by arranging the control device in the vicinity of the drive machine device, the power supply line between the control device and the drive machine device is shortened, and the electrical noise that becomes an obstacle to the radio device is reduced. .

  Furthermore, the traction elevator according to the present invention can be reduced in size and thickness by arranging a control device in the vicinity of the driving machine device, so that the electric panel installed near the entrance / exit of the landing can be reduced. The design effect can be improved.

  In addition, the traction elevator according to the present invention has a power supply cable between the command device of the electric panel installed near the entrance of the landing and the control device by arranging the control device in the vicinity of the driving machine device, Workability is improved and material costs are reduced.

  Hereinafter, an embodiment of the present invention will be described with reference to FIG.

  A car 1 and a counterweight 2 are suspended on an elevator hoisting rope 3. The car 1 is supported by a hoisting rope 3 wound around a turning pulley 4 pivotally supported on both sides of the lower portion, and the counterweight 2 is wound around a turning pulley 5 pivotally supported on the upper portion thereof. An elevator drive mechanical device 6 having a traction sheave 7 around which the hoisting rope 3 is wound is disposed on an upper portion of the elevator shaft.

  The car 1 and the counterweight 2 travel in the elevator shaft along the car guide rails 8a and 8b and the counterweight guide rails 9a and 9b that guide the car 1 and the counterweight 2, respectively. A car guide and a counterweight guide for guiding and supporting the car 1 and the counterweight 2 on each guide rail are not shown. Each guide rail is supported by a guide rail support (not shown) by the wall of the elevator shaft or the building beam 14.

  The hoisting rope 3 runs as follows. One end of the hoisting rope 3 is fixed to fixing means 12 above the passage of the counterweight 2 in the upper part of the elevator shaft. The hoisting rope 3 from the fixing means 12 descends until it meets the turning pulley 5 of the counterweight 2. When the turning pulley 5 is wound, the hoisting rope 3 rises again to the traction sheave 7 side of the driving machine device 6 and is wound around the traction sheave 7. The hoisting rope 3 descends from the traction sheave 7 to the car 1 side, and ascends to the fixing means 13 at the uppermost portion of the guide rail 8a via the turning pulley 4 supporting the car 1. Here, the other end of the hoisting rope 3 is fixed.

  Next, the arrangement of the drive machine device 6, the control device 20 that drives the drive machine device 6, and the command device 21 provided in the vicinity of the top floor entrance / exit will be described with reference to FIG.

  A machine base frame 10 is stacked and fixed on the upper ends of the counterweight guide rails 9a and 9b. The machine base frame 10 includes a machine base 10a, joint columns 10b and 10c, and an auxiliary member 10d. The machine base 10a is fixedly attached with a driving means 6 and a fixing means 12 at one end of the hoisting rope 3 to firmly hold the respective vertical loads. Further, the upper ends of the connecting columns 10b and 10c are fixed to the building beam 14 at the uppermost position of the elevator shaft. Further, the auxiliary member 10 d that connects the left and right joint pillars 10 b and 10 c supports the horizontal load of the drive machine device 6 via the support fitting 11. It is optimal that the support bracket 11 is provided at the upper end of the drive machine device 6. Further, if the connecting columns 10b and 10c are wide between the drive machine 6 and the wall of the elevator shaft, one connecting column is provided from the machine base 10a, the auxiliary member 10d is eliminated, and the supporting bracket 11 is directly provided. It may be attached to the connecting pillar. The control device 20 for driving the drive machine device 6 is fixed to the joint columns 10b and 10c.

  Next to the doors 24a and 24b of the top floor hall, a small and thin electric board 23 having a vertical dimension of about the doors 24a and 24b, a width of about 300 mm, and a thickness (d) of 100 to 150 mm is installed. A command device 21 including a device for supplying a drive signal to the control device 20 is accommodated. The electric board 23 has a door 23a, and the inside can be inspected by opening the door 23a. The control device 20 and the command device 21 are connected by a cable 22.

  In the embodiment of FIG. 1, the case where the distance between the counterweight guide rails 9a and 9b is narrow and the drive machine device 6 does not fit between them is shown, but the drive machine device 6 fits between the counterweight guide rails 9a and 9b. An example of the arrangement will be described with reference to FIG.

  In FIG. 2, the same reference numerals as those in FIG. In FIG. 2, the counterweight guide rails 9a and 9b are extended and fixed to the building beam 14 at the uppermost position of the elevator shaft. The machine base 10a is fixed to the counterweight guide rails 9a and 9b. As a means for fixing the machine base 10a, it is preferable to fix with a guide rail with a stopper in order to hold the vertical load of the drive machine device 6 on. The auxiliary member 10d is fixed to the counterweight guide rails 9a and 9b, and the support bracket 11 is fixed. The control device 20 for driving the drive machine device 6 is fixed to the counterweight guide rails 9a and 9b.

  A case where it is difficult to mount the control device 20 as in the embodiment of FIGS. 1 and 2 due to restrictions on the layout in the elevator shaft will be described.

  FIG. 8 shows the case where the car guide rail 8b and the joint pillar 10b of the machine base frame are close to each other, and shows an example in which one of the control devices 20 is fixed to the car guide rail 8b and the other is fixed to the joint pillar 10b.

  FIG. 9 shows a case where the car guide rail 8b and the counterweight guide rail 9a are close to each other, and shows an example in which one of the control devices 20 is fixed to the car guide rail 8b and the other is fixed to the counterweight guide rail 9a.

  FIG. 10 shows an example in which the bracket 60 is attached to the control device 20, one is fixed to the car guide rail 8b, and the bracket 60 is fixed to a wall or the like in the elevator shaft.

  FIG. 11 shows an example in which the bracket 60 is attached to the control device 20, one is fixed to the joint column 10b, and the bracket 60 is fixed to a wall or the like in the elevator shaft.

  FIG. 12 shows an example in which the bracket 60 is attached to the control device 20, one of the brackets 60 is fixed to the counterweight guide rail 9a, and the bracket 60 is fixed to a wall or the like in the elevator shaft.

  Next, arrangement | positioning of an apparatus when there is room in top space in an elevator shaft is demonstrated along FIG. FIG. 3 shows the arrangement of the devices when the car 1 is located at the floor level A on the top floor. The drive machine device 6 is disposed near the ceiling of the car 1, and a control device 20 that drives the drive machine device 6 is installed on the top of the elevator shaft at the top. 4a and 4b in the figure are turning pulleys for supporting the car 1.

  Here, the advantage which arrange | positions the control apparatus 20 near the drive machine apparatus 6 is demonstrated. FIG. 4 shows an overall view of an elevator control circuit. The drive machine device 6 includes a brake 40 and a speed detector 41 that detects a rotational speed. The drive machine device 6 is rotationally controlled by the output of the inverter device 32. The input power of the inverter device 32 is converted into direct current by the converter 30 from the building power supply 56 through the power supply cable 56a, the no-fuse breaker (NFB) 55 and the contactor 54 for turning on and off the power supply, through the power supply cable 22a and the power supply line 56b. Power is supplied. Reference numeral 31 denotes a capacitor that smoothes the output of the converter 30, and reference numeral 35 denotes a regenerative power absorption circuit that absorbs regenerative power with a resistor. The output of the inverter device 32 uses the signal Sps of the speed detector 41 and the signal is of the current detector 33 as feedback signals, and in accordance with the speed command signal Spc of the speed command device 53, a pulsed AC voltage is generated by the pulse width signal PW of the CONTROL 34. Applied to the drive machine device 6 to perform rotation control. The brake 40 is opened and closed by the contactor 52 to open and close the brake. Reference numeral 51 denotes a power supply for the brake circuit, and reference numeral 42 denotes a power supply line to the brake 40. The control device 20 includes an inverter device 32, a current detector 33, a smoothing capacitor 31, a regenerative power absorption circuit 35, a converter 30, and a CONTROL 34. The command device 21 includes a speed command device 53 that generates a speed command signal Spc, a power source 51, contactors 52 and 54, an NFB 55, a car call, a hall call, and a device (not shown) having a function of starting and stopping the car. It is configured. In FIG. 4, Vm represents the motor voltage of the drive machine 6 and AC represents the voltage of the building power supply 56.

  In the entire elevator control circuit, the part having a large volume is the control device 20 including the inverter device 32 that drives the drive machine device 6. That is, the function of converting electric power has been reduced in size due to advances in semiconductors, but has not yet reached the level of reduction in size and weight of signal devices. The command device 21 has been further reduced in size due to recent remarkable progress in semiconductor integration technology, and can be reduced in size and thickness as described with reference to FIG.

  The element used for the inverter apparatus 32 uses the insulated gate bipolar transistor (IGBT element) for the purpose of low noise, and has raised the switching frequency to 10-15 kHz. As the switching frequency is increased, electrical noise that becomes an obstacle to the radio equipment is generated. Therefore, the inverter device 32 and the power supply line 22a of the drive machine device 6 are closer to the drive machine device 6 as much as possible. It is well known that less electrical noise is generated.

  FIG. 5 shows waveforms of the elevator speed (Sp), the motor current (im) of the driving machine device 6 and the input current (ia) of the converter 30 during the ascending operation with the rated load.

  At time t0, a motor current (im1) that compensates for the unbalance torque between the car 1 and the counterweight 2 is supplied. The brake is released at time t1, and is accelerated until time t2. The motor current (im2) at this time is approximately twice the motor current (im1) that compensates for the unbalance torque. When approaching the destination floor, the vehicle is decelerated from the time t3 to the time t4, and the motor current (im) becomes zero at the time t5 after the brake is restrained at the time t4.

The relationship between the motor current (im) and the input current (ia) of the converter 30 is as follows:
Input current (ia) ≒ motor current (im) x elevator speed (Sp)
÷ Supply voltage (AC)
Motor voltage (Vm) ≒ Power supply voltage (AC)
Therefore, im1≈ia1 and im2≈ia2.

As can be seen from FIG. 5, the effective value of the input current (ia) is smaller than the effective value of the motor current (im). When the relationship of the effective current is obtained under all load conditions, etc., the input current (ia) ≒ 0.7 x motor current (im)
It becomes.

  That is, by disposing the control device 20 in the vicinity of the drive machine device 6, the line size of the power supply cable 22a from the command device 21 is reduced, so that the installation workability is improved and the material cost is reduced.

  The above is an example in which the electrical panel 23 containing the command device 21 is installed on the top floor. However, if it is not desirable on the top floor due to design restrictions, it is possible for those skilled in the art to install it on the floor below the top floor. It is clear. That is, by disposing the control device 20 in the vicinity of the drive machine device 6 and providing the command device 21 in the vicinity of the landing, the effect of improving the mounting workability and reducing the material cost is increased.

  FIG. 6 shows a control circuit in which the control device 20 includes an inverter device 32, a smoothing capacitor 31, a regenerative power absorption circuit 35, a converter 30, and a current detector 33. A pulse width signal is sent to the inverter device 32. This is an example in which the given CONTROL 34 is transferred to the command device 21.

  FIG. 7 shows that the control device 20 includes an inverter device 32, a smoothing capacitor 31, a converter 39 having a function of regenerating regenerative power generated from the inverter device to the power source side, and a CONTROL 34 that generates a pulse width signal PW in the inverter device 32. , A control circuit comprising an AVR 36 for applying a pulse width signal to the converter 39, a voltage detector 37 for supplying a power supply voltage signal Vc to the AVR 36, and a current detector 38 for supplying a power supply current signal ic to the AVR 36.

The principal part perspective view which shows one Embodiment of the traction elevator by this invention. The principal part perspective view which shows other embodiment of the traction elevator by this invention. The layout of each apparatus when the cage | basket | car of the traction elevator by this invention exists in the top floor level. The control circuit diagram which shows the relationship between the control apparatus and instruction | command apparatus of a traction elevator by this invention. The relationship line figure which shows the car speed at the time of the driving | operation of the traction elevator by this invention, a motor current, and an input current waveform. The other control circuit diagram which shows the relationship between the control apparatus of a traction elevator and command apparatus by this invention. The control circuit diagram which shows other embodiment of the control apparatus of the traction elevator by this invention. The perspective view which shows an example of the fixing method of the control apparatus of the traction elevator by this invention. The perspective view which shows the other example of the fixing method of the control apparatus of the traction elevator by this invention. The perspective view which shows the further another example of the fixing method of the control apparatus of the traction elevator by this invention. The perspective view which shows another example of the fixing method of the control apparatus of the traction elevator by this invention. The perspective view which shows another example of the fixing method of the control apparatus of the traction elevator by this invention.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Car, 2 ... Counterweight, 3 ... Hoisting rope, 4, 4a, 4b, 5 ... Turning pulley, 6 ... Drive machinery, 8a, 8b ... Car guide rail, 9a, 9b ... Counterweight guide rail, 10 DESCRIPTION OF SYMBOLS ... Machine frame, 11 ... Support metal fittings, 14 ... Building beam, 20 ... Control device, 21 ... Command device, 22 ... Cable, 23 ... Electric panel, 30, 39 ... Converter, 32 ... Inverter device, 34 ... CONTROL, 53 ... Speed command device.

Claims (4)

The counterweight between the car moving along the car guide rail, the counterweight moving along the counterweight guide rail, a pair of hoisting ropes on which the car and the counterweight are suspended, and the wall of the car and the elevator shaft A traction elevator including a traction sheave disposed above a guide rail and engaged with the hoisting rope, and a drive mechanical device disposed on a machine base fixed to an upper portion of the counterweight guide rail above the elevator shaft. A control device for driving the drive machine device in the vicinity of the drive machine device is fixed to either the car guide rail or the counterweight guide rail, or to the car guide rail and the counterweight guide rail. And most Part or with placing the command device gives a command to the control device in the vicinity of the landing doorway below the top, above the counterweight guide rails where the machine base is fixed to stick the vertical load of the drive machine unit A traction elevator that extends to and fixed to a building beam . The counterweight between the car moving along the car guide rail, the counterweight moving along the counterweight guide rail, a pair of hoisting ropes on which the car and the counterweight are suspended, and the wall of the car and the elevator shaft Traction comprising a drive machine device disposed on a machine base that is disposed above a guide rail and includes a traction sheave that engages with the hoisting rope and that is fixed to the upper end of the counterweight guide rail at the top of an elevator shaft In the elevator, a joint column is fixed to a machine base fixed to an upper end portion of the counterweight guide rail, and a control device for driving the drive machine device is fixed to the joint column in the vicinity of the drive machine device. , Near the top or bottom landing doorway With placing the command device gives a command to the serial controller, a traction elevator which is characterized in that the upper end portion of said splicing pillar fixed to the machine base to maintain the vertical load of the drive machine unit is fixed to the building beams.   The traction elevator according to claim 1, wherein the command device is arranged beside a door of a top floor hall.   4. The traction elevator according to claim 1, wherein the control device includes an inverter unit that drives the drive machine device and a conversion device that applies DC power to the inverter unit. 5.

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