WO2000035800A1

WO2000035800A1 - Elevator

Info

Publication number: WO2000035800A1
Application number: PCT/JP1999/006953
Authority: WO
Inventors: Satoshi Suzuki; Eiji Uchiumi; Yasuhiro Hirashiki; Hirotada Sasaki; Masato Nagata; Takanobu Kushihira
Original assignee: Kabushiki Kaisha Toshiba
Priority date: 1998-12-11
Filing date: 1999-12-10
Publication date: 2000-06-22
Also published as: CN1323933C; KR20000048083A; KR100430113B1; CN1259482A; JP4530544B2

Abstract

An elevator having a hoist installed on a counterweight (120) to counterbalance the weight of a cab (201) through a rope (213), which hoist raises and lowers the cab through the rope (213), wherein the hoist comprises a driving motor (105), a traction pulley (103) having a rotary shaft different from that of the driving motor and having the rope wound thereon, and a power transmission device (127) for transmitting power from the driving motor (105) to the traction pulley (103), and wherein even in an elevator of the heavy load class, the driving motor can be reduced in size since the load of the cab (201) does not act on the driving motor (105).

Description

Description Elevator overnight device

TECHNICAL FIELD The present invention relates to a fishing bottle-type elevator device that moves up and down a basket suspended by a rope, and more particularly, the present invention relates to an elevator device that does not have a machine room. Background technology

The outline of a conventional elevator device is described with reference to FIG. The hoisting device 4 is installed in a machine room 6 provided at the uppermost part of the hoistway 5. Passenger car 1 and county weight 2 are connected by lobe 3 and hoisting machine 4 moves rope 3 to change the hanging of car 1 and county weight 2 to move car 1 vertically. Up and down. However, with such an elevator system, the machine room 6 had to be built on the roof of the building, and there was a problem that the construction cost and time were required. Also, since the height of the entire building increases by the height of the machine room 6, the right to sunshine often becomes a problem, especially in densely populated areas. Against this background, there has been an increasing demand for an elevator system without a machine room in recent years.

As one of the means, a linear motor drive elevator is known. In the linear motor evening drive elevator, the primary conductor of the linear motor is installed in the counterweight and the driving force is obtained by the electromagnetic attraction between the secondary conductor installed in the hoistway, but the secondary conductor is used in the hoistway. It is not suitable for elevators with a high up-and-down stroke because it needs to be newly and accurately installed.

Also, Japanese Patent Application Laid-Open No. 7-137964 proposes a system in which a flat hoisting machine in which a traction machine and a motor rotor are integrated is housed in a counterweight and driven. Have been. However, it is very difficult to apply this method to large-scale elevator systems. One reason is that while the width and thickness of the counterway are almost constant regardless of the loading class, This is because as the load capacity increases, the required driving capacity also increases, so that the motor becomes large and it is difficult to store it inside the county weight.

On the other hand, an increase in the loading capacity means an increase in the weight of the counterweight to balance the weight, and the load on the truncation sheave also increases. In the motor disclosed in Japanese Patent Application Laid-Open No. 7-137964, since the traction sheave is a rotor, a bearing having sufficient strength to withstand the above-mentioned large load is required. Therefore, the size of the bearings in the Mo / Yu will increase, and the size of the Mo / Yu itself will increase, making it difficult to place the Mo / Yu in the Count / Yu weight as described above.

In addition, the brake must be housed inside the county weight, but in order to obtain a large brake torque, for example, in the case of a disk brake, increase the diameter of the disk or increase the pressing force of the brake shoe. Must. However, both of the above two points mean that the size of the brake is large, and it is difficult to store it in the county.

On the other hand, in recent years, a hoisting machine used in an elevator system that does not use a gear mechanism and has a gearless system has been considered. An example is disclosed in Japanese Patent Publication No. It is shown. An example of this is shown in FIG. In FIG. 17, a vertical bracket 12 fixed to the base 11 of the hoisting device 10 is provided with a center axis 13 protruding in the horizontal direction in a fixed state. A traction sleeve 15 is rotatably provided through a bearing 14. The trough 15 has a cylindrical portion 15a fitted to the bearing 14, a housing portion 15b formed outside the cylindrical portion 15a and having an opening on a side surface, and formed on the outer peripheral portion. Rope groove 15 c is provided. The above rope is hung in the rope groove 15c.

The above-mentioned vertical bracket 12 is provided with a stator bracket 12a. The stator bracket 12a is positioned in the accommodating portion 15b, and the stator of the drive module is provided. 16 are provided. The outer periphery of the cylindrical portion 15a of the above-mentioned traction sleeve 15 is located inside the accommodating portion 15b, and the rotor of the driving motor is opposed to the inner periphery of the stator 16. 17 are provided.

In this configuration, the rotor 16 A rotation torque is generated at 17, and the traction sheave 15 is rotated based on the rotation torque. The rope is moved by the traction sheave 15, and the above-mentioned car and the countdown weight are moved up and down.

The hoisting device 10 having such a configuration has a configuration in which the stator 16 and the rotor 17 of the driving motor are incorporated in the accommodating portion 15 b provided in the traction machine 15. Therefore, for example, when changing either the traction unit 15 or the driving motor part in accordance with the model of the elevator device, the traction unit

It is necessary to change 15 and the whole drive motor part. In addition, for example, when replacing either the traction sheave 15 or the drive motor part for repair, the entire traction sheave 15 and drive motor part must be disassembled and replaced. No.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an elevator system in which a hoisting device is mounted on a county weight, and in particular, the hoisting device is stored in a counterweight even when the loading capacity of a car is large. It is an object of the present invention to provide an elevator device that can perform the above operations.

Another object of the present invention is to provide an elevator apparatus that can easily change or replace parts in a hoisting apparatus. Disclosure of the invention

According to a first aspect of the present invention, there is provided an elevator equipped with a hoisting device for raising and lowering a passenger car via the rope, on a counterweight for balancing the weight of the passenger car via a rope. In the setting device, the hoisting device has a driving motor, a rotation shaft having a rotation axis different from the rotation axis of the driving motor, and a rope on which a rope is wound, and a power of a driving motor. And a power transmission device for transmitting the power to the traction sleeve. In this way, since the drive source can be placed in the space where the space is limited, the machine room becomes unnecessary, and the entire elevator can be downsized. Since the driving motor does not bear the high load acting on the motor, the strength of the bearing of the driving motor can be reduced, and the hoisting device can be downsized.

According to a second aspect of the present invention, the power transmission device is mounted on a rotating shaft of a driving motor. And a driven wheel provided on the rotation shaft of the traction sheave, and an endless cord wound around the driven wheel and the driven wheel. In this way, the power can be smoothly transmitted from the driving motor to the traction sheave, and noise and vibration can be prevented.

A third aspect of the present invention is to dispose a driving motor below the truncation sheave and transmit the excitation force in the vertical direction by the endless cable-like body of the power transmission device. In this way, the hoisting device can be accommodated in the interior of the counterweight having a small cross-sectional area.

A fourth aspect of the present invention is that the traction sheave is arranged on the hoistway wall side, and the driven wheel is arranged on the opposite side of the hoistway wall. By arranging the equipment in this way, it is easy to adjust the driven wheel and the endless cable from the hoistway side. A fifth aspect of the present invention is that the rotation sheave of the truncation sheave and the driven wheel coaxially fixed thereto are cantilevered. In this way, it is easy to remove the endless cords applied to the driven wheels from the hoistway side and to remove the ropes applied to the traction sieve, thereby facilitating maintenance work.

According to a sixth aspect of the present invention, a driving motor, a power transmission device, and a traction sheave are installed on a first support member, and a counterweight element is installed on a second support member. The configuration is such that the member and the second support member can be connected and separated from each other. In this way, the countdown weight element can be disassembled and carried into a narrow hoistway, which facilitates assembly.

A seventh aspect of the present invention is that the endless cord-like body of the power transmission device is a toothed belt, and the driving and passive wheels are toothed pulleys. By doing so, the rotation angles of the drive motor and the traction sheave can be synchronized, and a drive system without backlash can be realized.

An eighth aspect of the present invention is that the endless cord of the power transmission device is a chain, and the driving and driven wheels are sprockets. In this way, the same effect as that of the seventh aspect can be obtained, and sufficient transmission capacity can be obtained even when the load weight increases. According to a ninth aspect of the present invention, the driving wheel of the driving motor and the driven wheel of the traction motor have a variable center distance, so that the tension of the endless cord can be adjusted. That is what is being done.

According to a tenth aspect of the present invention, there is further provided an angle detecting device having a rotating wheel that rolls while being in contact with an endless cord-like body, and a rotating angle detector connected to the rotating wheel. It is to detect the rotation angle of the motor. In this way, it is not necessary to arrange an angle detector coaxially with the rotation axis of the driving motor, so that the thickness of the motor can be reduced, and as a result, the thickness of the counting weight can be reduced. Can be done.

In an eleventh aspect of the present invention, the endless cord-like body is a toothed belt, the rotating wheel is a toothed pulley, and the toothed pulley is rolled while being engaged with the toothed belt. It is to detect the rotation angle of the driving motor. By doing so, the slippage of the rotating wheels of the rotation angle detector can be eliminated, and the detection accuracy of the rotation angle detector can be improved.

According to a 12th aspect of the present invention, the driving motor is a permanent magnet motor, and further includes a rectifier circuit, a frequency variable circuit, a controller, circuit switching means, and a resistor. It is to connect the winding of the permanent magnet type motor to either the frequency variable circuit or the resistor according to the command from the controller. In this way, the braking force can be generated by the driving motor itself, and the rotation of the driving motor can be stopped even in an emergency, thereby improving safety. In addition, since special equipment does not need to be installed in the county weight, the counterweight can be made smaller.

A thirteenth aspect of the present invention is to provide a brake in the countdown wait to remotely control the rotation of the rotor of the drive motor by remote control. In this way, the braking force for stopping the rotation of the driving motor can be increased, so that even if the weight of the car increases and braking force is required, the rotation of the driving motor is surely stopped. I can do it.

A fourteenth aspect of the present invention is that an intermediate pulley around which a rope is wound is provided on a structure in which the elevator apparatus is provided, and a brake is provided on the intermediate pulley. This eliminates the need to store the brake in the counterweight, so that the degree of freedom in arranging the driving motor and the power transmission device in the counterweight is increased.

A fifteenth aspect of the present invention is directed to a case where the difference between the rotation speed command to the driving motor and the rotation speed based on the detection angle of the rotation angle detector is equal to or greater than a predetermined value. Means to stop the power supply to the driving motor and to activate the brake. In this way, an abnormality in the power transmission device can be detected quickly, and the passenger car can be safely stopped.

A sixteenth aspect of the present invention is to cover the periphery of the countdown wait with a cover and to provide a sound absorbing material in the space of the countdown wait surrounded by the cover. With this configuration, noise generated by the driving motor and the power transmission device can be reduced, so that a quiet elevator device can be realized. Furthermore, since the components of the hoisting device can be protected from dust, the devices can be protected.

According to a seventeenth aspect of the present invention, there is provided a radiator for releasing heat of the driving motor on the side of the hoistway wall of the counting tower and near the driving motor. This means that streamlined covers are provided at the top and bottom of the weight. By doing so, air can be sent to the gap between the county and the hoistway wall, and the heat generated by the driving motor can be efficiently radiated into the air.

An eighteenth aspect of the present invention includes a retractable engaging member provided at an upper portion of the county weight, and at the time of inspection work, the engaging member is protruded to provide a count rail for the county weight. The engaging member is engaged with a rail supporting portion for fixing the counterweight to the hoistway wall, and the county weight is suspended from the rail supporting portion. In this way, the maintenance shelves can be easily removed because the traction sheave of the county weight can be loosened from the rope during inspection.

A nineteenth aspect of the present invention is directed to a guide rail provided vertically in a hoistway for guiding a county weight, a pressing means provided in a county weight, and a pressing means provided by the pressing means. A roller that is pressed by the guide rail and that rolls freely on the guide rail. Even if the roller is pressed by the guide rail due to the reaction of the rotational driving force of the drive motor, the roller is rotated by the rotatable roller. Cow This is to make it possible to guide the trains smoothly. In this way, even if the entire counterweight receives a large rotational moment with the torque generated by the rotational driving force of the driving motor, the inclination becomes difficult.

A 20th aspect of the present invention includes a stator having a driving module fixed to a support and a rotating shaft rotatably supported by the support via a bearing. A rotor provided rotatably with respect to the stator about the rotation axis; and a rotor mounted removably on the rotation shaft so as to rotate integrally with the rotation shaft. An output member having a driving wheel on which an endless cord-like body is hung is provided on a portion protruding outward in the axial direction. With this configuration, since the output member having the driving wheel is detachably attached to the rotating shaft of the motor rotor, for example, either the driving wheel or the driving motor portion is changed. When changing, only the output member or only the drive module can be changed. Also, for example, when replacing either the driving wheel or the driving motor part for repair, similarly, only the output member or only the driving motor part can be replaced, and the whole is disassembled. do not have to.

A twenty-first aspect of the present invention is characterized in that the support has a stator frame at one end in the axial direction, and the driving wheel protrudes toward the stator frame. I have. According to this, the driving wheel on which the endless cord is hung has a relatively high strength near the dog stator frame, so that the driving wheel can be stably supported.

A twenty-second aspect of the present invention is characterized in that the support has a stator frame at one end in the axial direction, and the stator frame is provided with ribs projecting in the axial direction. I have. According to this, the strength of the stator frame can be further increased.

A twenty-third aspect of the present invention is characterized in that the axial tip of the rib is set to be equal to or less than the axial tip of the driving wheel. A twenty-fourth aspect of the present invention is characterized in that the stator frame is provided with a concave portion that is recessed in the axial direction along the endless cord-like body. According to these, it is possible to minimize an increase in the axial dimension.

According to a twenty-fifth aspect of the present invention, the rotor includes a plurality of permanent magnets inside the rotor. It is characterized by being embedded in. BRIEF DESCRIPTION OF THE FIGURES

FIG. 1 is a front view showing an example of an elevator apparatus according to the present invention.

FIG. 2 is a front view showing a hoisting device of the elevator apparatus according to the present invention. FIG. 3 is a side sectional view showing a hoisting device of the elevator apparatus according to the present invention. 4A and 4B are views showing the upper part of the hoisting device of the elevator apparatus according to the present invention, wherein FIG. 4A is a front view and FIG. 4B is a plan view.

5A, 5B, and 5C are views showing the operation of the upper part of the hoisting device of the elevator apparatus according to the present invention, and FIG. 5A shows that the bolt of the link is fixed to the stopper. Fig. 5B is a plan view showing a state in which the link bolt is removed from the retainer, and Fig. 5C is a plan view showing a state in which the link bolt is hung on the guide rail. .

FIG. 6 is a front view showing a state in which a link bolt is hung on a guide rail at the upper part of the hoisting device of the elevator device.

FIG. 7 is an electric circuit diagram used for the hoisting device of the elevator apparatus according to the present invention.

FIG. 8 is a perspective view showing a guide device in the hoisting device of the elevator apparatus according to the present invention.

FIG. 9 is a longitudinal sectional side view of a main part showing a first embodiment of a hoisting device according to the present invention.

FIG. 10 is a front view of main parts of the hoisting device shown in FIG.

FIG. 11 is a front view of the hoisting device.

FIG. 12 is a vertical sectional side view of the hoisting device.

FIG. 13 is a longitudinal sectional side view of a main part showing a third embodiment of the winding device according to the present invention.

FIG. 14 is a longitudinal sectional side view of a main part showing a fourth embodiment of the hoisting device according to the present invention.

FIG. 15 is a longitudinal sectional side view of a main part showing a fifth embodiment of the winding device according to the present invention. O

FIG. 16 is a schematic sectional view of a conventional elevator apparatus.

FIG. 17 is a half sectional view showing an example of a conventional gearless hoisting device. BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, embodiments of the present invention will be described with reference to FIGS. 1 to 19. First, an embodiment of an elevator apparatus according to the present invention will be described with reference to FIGS.

FIG. 1 is a schematic overall view of an elevator apparatus according to the present embodiment.

A car guide rail 204a, 204b and a counter guide rail 124a, 124b are vertically mounted on the hoistway wall. The passenger car 201 is provided with car guide devices 205a, 205b, 205c and 205d at four positions, up, down, left and right, respectively, and engages with the car guide rails 204a, 204b to move the passenger car 201 in the vertical direction. Lead to.

Similarly, the county weight 120 is guided by the guide devices 123a, 123b, 123c, 123d in the vertical direction along the county weight guide rails 124a, 124b. For the sake of explanation, in FIG. 1, the plane formed by the car guide rails 204a and 204b and the plane formed by the county wait guide rails 124a and 124b are drawn as the same, but they are actually orthogonal. Placed in the direction. At the top end of the car guide rail 204 and the countdown guide rail 124a, a sieve beam 214 is attached so as to straddle them, and a ceiling sheave 206 is rotatable above the sheave beam 214. It is supported by. A brake 207 is attached to the ceiling sheave 206, and the rotation of the ceiling sheave 206 is remotely opened and restrained. The brake 207 is composed of an electromagnet (not shown) and a panel (not shown), and has a fuel-safe function such that the brake is released only when a current is applied. In addition, rotatable force sieves 203a and 203b are also provided at the lower part of the passenger car 201.

Passenger car 201 and counterweight 120 are balanced via rope 104. One end of the rope 104 is a guide rail for the county 1 Near the top of 24b, hitch 21 Fixed at 1 la, hung downward, wound on traction sheave 103 of power station 120, extended upward and wound on ceiling sheave 206 Have been. The rope 104 is further suspended downward to reach the passenger car 201, is wound around the car sheaves 203a and 203b, extends upward again, and is fixed to the upper end of the car guide rail 204a by the hitch 21 1 lb. ing.

Next, the internal structure of the county wait 120 will be described with reference to FIG. 2. c FIG. 2 is a schematic internal view of the county wait 120 portion. The countdown weight 120 is roughly divided into an upper hoisting mechanism section 128 and a lower countdown weight element section 129, and the hoisting mechanism section 128 and the counterweight element section 1 29 are separated. Is connected to the structural part consisting of the housing 101 and the supports 1 16a and 1 16b by connecting bolts 13 Oa and 13 Ob. The upper winding mechanism 128 is a flat driving motor 105 arranged in the space between the support 1 16a and the support 1 16b, and is different from the rotation axis of the driving motor 105. It has a rotation shaft, a traction sheave 103 arranged above the drive motor 105, and a power transmission device for transmitting the power of the drive motor 105 to the traction sheave 103. The drive shaft 105 has a screw shaft 114 mounted above it, and the support 116a has a hole for the screw shaft 114 to pass through. Further, a lifting nut 115a is provided above the support 111a of the screw shaft 114, and a tension nut 115b is provided below the support 116a. These screw shafts 114, supports 111a, lifting nuts 115a, and tension nuts 115b constitute jacks 117, and drive motor 105 is moved up and down. Making it possible.

On the other hand, long holes 113a, 113b, 113c, and 113d are provided on the upper, lower, left, and right sides of the frame portion of the drive module 105, and these long holes 113b, 113b, and 113b are provided. through 1 3c, 1 1 3d, by fixing bolts 1 1 0a, 1 10b, 1 10c 3 1 1 Od, drive motor Isseki 1 0 5 is fixed to the housing 1 0 1. From the drive module 105, a cord 125, which combines power and signal lines, extends and hangs down the hoistway from the lowermost end of the county weight to form a tail cord 126. Te The other end of the wire cord 1 26 is connected to a junction box 2 15 installed on the shaft wall and connected to a controller (not shown) on the ground. The drive motor 105 is controlled by the controller (not shown).

On the other hand, the driving motor 105 has a driving pulley 106 on its rotating shaft. A rotation angle detector 1 12 is provided on the side of the drive motor 105 near the driving pulley 106, and a roller 1 1 1 is mounted on the shaft of the rotation angle detector 1 1 The roller 111 is pressed from the inner side of the toothed belt 108 so as to engage the teeth of the toothed belt 108.

Next, the upper part of the driving motor 105 will be described with reference to FIG. Figure 3 is a schematic side view of the county weight 120. In the portion above the drive module 105 inside the housing 101, the sheave base 1 19 is fixed to the support 1 16a and the housing 101, and the sheave base 1 A bearing (not shown) is provided above 19, and rotatably supports a shaft 121 integrated with the traction shaft 103. The driven shaft 107 is further extended and a driven pulley 107 is attached.The traction shaft 103 and the driven pulley 107 are integrally formed so that they can rotate simultaneously. Has become. A toothed belt 108 is stretched between the driving pulley 106 and the driven pulley 107.

On the other hand, the counterweight element section 12 9 below the counterweight 120 has slots 122 a and 122 b on the left and right sides thereof, and a plate-like weight 102, 100. .., 102 are stacked and stored in slots 122a and 122b. An electric circuit configuration for driving the driving module 105 will be described with reference to FIG.

The three-phase AC power supply 501, which is a power source, is first converted to DC by a rectifier circuit 502, and further, is subjected to frequency and voltage three-phase control by a frequency variable circuit 503 based on a command from the controller 504. Converted to AC. Thereafter, electric power is supplied to the permanent magnet type motor 508, that is, the winding of the driving motor 505 through the main circuit side switch 505. Further, a resistor 507 is further connected to a three-phase electric wire of the permanent magnet motor 508 via a regenerative circuit-side switch 506. Main circuit side switch 505 and regenerative circuit side switch 506 are always open when either one is closed The switching operation is controlled by the controller 504. When the regenerative circuit-side switch 506 is closed, an electric circuit is configured such that the windings of the permanent magnet type motor 508 are short-circuited via the resistor 507.

The assembly of the hoisting device thus configured will be described.

First, a method of attaching the toothed belt 108 and adjusting the tension will be described.

In FIG. 2, to attach the toothed belt 108, the lifting nut 115a is tightened, and the lifting nut 115a is moved downward with respect to the screw shaft. Then, the driving motor 105 is lifted upward with respect to the support 1 16a, and the center distance between the driving pulley 106 and the driven pulley 107 is reduced. At this time, loosen the fixing bolts 110a, 110b, 110c, and 110d. If the distance between the shafts becomes sufficiently short, the toothed belt 108 can be stretched over the driven bury 107 and the driving pulley 106. Thereafter, when the lifting nuts 115 are loosened, the driving motor 105 is lowered by its own weight, and the toothed belt 108 is tensioned with a certain amount of tension. Further, after loosening the lifting nut 115a, tighten the lower tension nut 115b to move the tension nut 115b upward with respect to the screw shaft. Then, the screw shaft 114 obtains a reaction force with respect to the support 1 16a and pushes the drive motor 105 further downward, thereby increasing the above-mentioned center distance. Accordingly, the tension of the toothed belt 108 increases. When the desired tension is obtained on the toothed belt 108, tighten the fixing bolts 110a, 110b, 110c, and 110d, fix the drive module to the housing 101, and complete the adjustment. I do. The procedure for replacing the toothed belt 108 is the reverse of the above procedure.

Next, the elevating operation of the county wait 120 will be described.

When the driving motor 105 is rotated by being controlled by a controller (not shown), traction is performed via a driving pulley 106, a toothed belt 108, a driven pulley 107, and a drive shaft 122. Sheave 103 is rotated. Then, the trough 1303 moves the rope 104 by the frictional force, and the whole countdown 120 goes up or down according to the sending direction of the rope 104. Then, the length of the rope 104 above the county weight 1 20 changes, so the rope 1 A passenger car (not shown) suspended on the other side of 04 is raised and lowered. At this time, the rotation angle detector 1 12 knows the rotation angle of the driving pulley by detecting the rotation angle of the roller 111. Since the diameters of the roller 1 1 1 and the driving pulley 106, the reduction ratio of the reduction system composed of the driven pulley 107 and the driving pulley 106, and the diameter of the transmission 105 are known, the roller 1 The position of the passenger car is detected by knowing the winding amount of the rope 104 from the rotation angle of 11. The rotation speed of the drive motor 105 is also calculated by calculating the time change of the rotation angle of the roller 111, and is used for the rotation control of the drive motor 105.

Next, the brake will be described.

After the passenger car has landed on the predetermined floor (not shown), the brake 207 is operated to restrict the rotation of the ceiling sheave 206 and fix the winding position of the rope 104. Then, the positions of the passenger car 201 and the county weight 120 are also restrained. After that, the main circuit switch 505 is opened by the controller 504, and the regenerative circuit switch 506 is closed to short-circuit the coil windings of the drive motor 105. . In this state, for example, if an external force acts to rotate the rotor (not shown) of the drive motor 105, and the rotor tries to rotate, the permanent magnet (508) inside the permanent magnet motor 508 will rotate. The magnetic flux changes between the coil (not shown) and the coil (not shown), and an electromotive force is generated in the coil. A current flows through the windings due to the electromotive force, but since the windings are short-circuited by the resistor 507, the electric energy is dissipated and lost as heat energy. As a result, a back electromotive force is generated in the winding, and an electromagnetic force is generated that opposes the change in the magnetic flux, and a rotational force that opposes the rotation of a rotor (not shown) is generated. As a result, the rotor rotates. Be restrained.

Next, the operation of the rotation angle detector 112 and the roller 111 will be described.

A controller (not shown) controls the rotation by using the signal of the rotation angle detector 111 of the driving motor 105. At this time, if an abnormal situation occurs, such as the toothed belt being cut, there will be a difference between the rotation speed of the driving pulley and the rotation speed of the rotation angle detector 112. Here, if the speed difference exceeds a certain value, the controller determines that the belt transmission system has an abnormality and opens the main circuit switch 505 to open the drive motor. 0 Turn off the power supply to 5 and regenerative circuit side switch 5 0 Close 6 to short the windings of drive motor 105. After that, as described in the first embodiment, the rotor of the driving motor 105 (not shown) is controlled to stop the rotation by applying a braking force. At the same time, the controller 504 issues a gripping command to the brake 207 provided on the ceiling sheave 206 at the ceiling of the hoistway to brake the rotation of the ceiling sheave 206, and the passenger car and the counterweight Emergency stop. Thus, according to this embodiment, even if an abnormal situation occurs when the transmission belt is cut, the passenger car can be stopped immediately.

As described above, the above elevator apparatus can be provided with a hoisting apparatus in the count weight 120, which is originally flat and has a small space. Since the count weight 120 is equipped with a speed reducer, the torque required for the drive motor 105 is small and the number of revolutions can be increased, so the drive motor 105 is compact. Things are fine. In addition, since the drive motor 105 and the traction sheave 103 have different rotation axes, it is necessary to separate the bearings and receive the load of the traction sheave 103 with the motor sheave. Is gone. Therefore, the size of the driving motor bearing can be reduced, and the driving motor can be downsized. In addition, the use of the toothed belt 108 improves the riding comfort of the passenger car with less occurrence of backlash and vibration, which are often problems in gear type reduction gears.

Furthermore, since the brakes do not need to be stored inside the county and wait areas, the space for the driving motor and the drive section can be made wider inside the county and wait states. Also, there is no need to reduce the size of the brake so that it can be stored inside the counter.

In particular, even in the event of a sudden stop of the passenger car in the event of a power outage or emergency, the rotation of the motor's rotor is electrically braked by a resistor and the inertia of the drive motor or traction sheave is used. The inertial rotation can be stopped. Therefore, it is possible to avoid generating excessive tension on the mouth-to-belt and the like, thereby protecting the components.

Also, even if an abnormal situation occurs when the toothed belt is cut, the car can be stopped immediately by determining this.

Note that the speed reducer portion including the toothed belt and the toothed pulley may be a transmission device including a chain and a sprocket. FIG. 3 is a schematic side cross-sectional view showing a cover structure of the countdown wait.

The county weight 120 is covered with a soundproof cover 302 around its periphery to cover the internal components. A streamlined cover 30 la is attached to the upper part of the county weight 120 and a streamlined cover 30 lb is attached to the lower part. Each of the streamlined covers 301a and 301b has a curved upper end and a lower end, respectively, and is attached to the hoistway wall 306 so that the curved surface portion comes to the side. The space inside the counterweight 120 formed by the soundproof cover 302 and the streamlined cover 30La, 301b is filled with sound absorbing materials 303a, 303b. Further, a heat radiation fin 305 is mounted on the rear side of the coun- try weight 120, near the hoistway and near the driving motor 105. The heat dissipating fin 305 has a comb-like cross section in a horizontal plane, and is provided with a plurality of vertical grooves.

The above configuration works as follows. First, the sound produced by the soundproof cover 302 and the streamlined covers 30 la and 30 1 b traps the sound generated from the drive motor 105 and the reducer 127 inside the countdown wait, preventing it from leaking outside. The generated sound is absorbed by the sound absorbing materials 303a and 303b.

When the county weight 120 rises, the air above the county weight 120 flows in the direction of the arrow in Fig. 3, and the back of the counterway weight 120 and the wall of the hoistway along the streamlined cover 30 la. 306. At this time, air is accelerated along the curved surface of the streamlined cover 30 1a and the flow velocity increases. Then, when the air passes through the heat radiation fin 305, it takes heat and lowers the temperature near the driving motor 105 to cool the driving motor 105. Also when the count weight 120 descends, the air with the increased flow velocity passes through the radiating fins 305 to take away heat and prevent the temperature of the driving motor 105 from rising due to the same principle as described above.

As described above, according to the above-described embodiment, it is possible to prevent generation of noise and realize a quiet device.

Further, the heat generated by driving the driving motor can be efficiently removed, and the temperature of the driving motor 105 can be prevented from rising.

FIGS. 4 to 6 are views showing a fixing method when the county weight is fixed to the guide rail. FIG. 4 is a schematic diagram showing the upper left portion of the county waiter in the present embodiment, FIG. 4A is a side view, and FIG. 4B is a top view. As described above, the guide device 123b is provided at the upper left portion of the countdown weight 120, and is engaged with the guide rail 124b. A plurality of rail brackets 406 are provided at regular intervals in the vertical direction on the wall of the hoistway (not shown), and each rail bracket 406 is guided by a clip 407 at the rail bracket 406. Is fixed to the wall. The configuration of the guide rail and the configuration of the guide device described above are similarly configured on the guide rail 124 a side which is the right rail of the county weight 120. A hinge 401 is provided at the upper left end of the housing 101 of the county weight 120, and swingably supports a U-shaped link 4◦2. A hole 409 is provided at one end of the U-shaped portion of the link 402 so that the bolt 403 can pass through. The other end portion of the link 402 is provided with a female screw portion 405, and is screw-connected to the male screw portion 404 provided at the tip portion of the bolt 403. The axis of the bolt 403 and the axis of the hinge 401 are arranged in such a manner that the axis of the bolt 403 becomes parallel to the axis of the hinge 401 when the element 403 is connected to the female screw 405. The housing 101 further includes a stopper 408 through which the bolt 403 can pass when the link 402 is in a position as shown in FIG. 4B.

The operation of the device configured as described above will be described with reference to FIGS. During normal use of the elevator device, the bolt 403 is screwed to the female screw portion 405 while passing through the stopper 408, and the link 402 is fixed to the housing 101. I have. On the other hand, when inspecting the elevator device, the counterweight 120 is raised and lowered, and stopped at a position where the upper surface of the housing 101 comes near the rail bracket 406. Then, the worker loosens the bolt 403 manually and removes the bolt 403 from the dropper 408 (Fig. 5B). Next, rotate the link 402 around the hinge 401 and turn it back toward the guide rail 124b, and then tighten the bolt 403 again to the female thread 405 (Fig. 5C). . At this time, the bolt 403 is located above the rail bracket 406 and on the opposite side of the county weight 120 with respect to the guide rails 124b (Fig. 6). These operations are also performed on the right guide rail (not shown). After the above series of work is completed, When the drive motor 105 is rotated at a very low speed in the direction to lower the eight, the load sharing of the county weight 120 shifts from the rope 104 to the link 402. Eventually, it will be completely suspended from the rail bracket 406. If, for example, a passenger car (not shown) is then dropped by another lifting machine, the rope 104 can be loosened and removed from the traction suspension 103.

Again, in order to suspend the county weight 120 to the rope 104 via the traction sheave 103, the procedure described above must be reversed.

Thus, in this embodiment, the countdown weight 120 can be temporarily fixed to the building, and the rope 104 can be removed from the traction section 103. Replacement of the rope 104 and maintenance and inspection and replacement of the equipment in the county wait 120 can be performed easily.

FIG. 8 is a diagram showing a method of guiding the county wait. FIG. 8 is a schematic perspective view of the upper left portion of the counterweight in FIG. A friction type guide device 604 is attached to the upper side of the county weight, and the U-shaped portion engages the guide rail 124b. Guideways 605a and 605b are provided in the front-rear direction (see FIG. 8) of a portion of the friction type guide device 604 which comes into contact with the guide rails 124b. Further, a base 603 is attached to the upper surface of the counterwall, and a lever 602 is provided to be swingable with respect to the base 603. A guide roller 601 is rotatably provided at the distal end of the lever 602. At the rear of the base 603, a stand 606 is provided in the vertical direction. A panel 607 is provided between the stand 606 and the lever 602, and the guide roller 601 is guided. It is urged against the drain 1 2 4 b. These constitute a wheel-type guide device 608. Guide devices for other parts are similarly configured.

Such an arrangement operates as follows. First, the friction type guide device 604 engages only with the guide rails 124b in the front-rear direction (see Fig. 8), and guides the counterweight so that it does not come off in the front-rear direction. On the other hand, the wheel-type guide device 608 rolls on the guide rail 124b while the wheel 601 is pressed by the panel 607, and moves in the left and right direction of the power supply weight (see FIG. 8). The guidance will be provided to prevent the county waiter from moving significantly. When the drive motor 105 rotates, torque is generated, but the reaction force at that time is transmitted to the entire county weight and acts as a moment to tilt the county weight. I do. The moment is received by the wheel-type guide device 608, and is balanced with the reaction force from the guide rails 124b, so that the tilting posture of the county weight is determined. At this time, even if the wheel type guide device 608 has a large moment and is strongly pressed against the guide rails 124b, the wheels are used to guide the guide rails against the guide rails. Force is very small and does not generate vibration. This is hard to imagine if the right and left guides are frictional, assuming that the frictional force increases and the vibration increases due to the increase in the pressing force.

As described above, according to this embodiment, even if the pressing force of the left and right guide device is increased by the torque generated by the driving motor, it is possible to smoothly guide while suppressing the inclination of the counterweight. it can. Therefore, it is possible to reduce the vibration of the rope on which the countdown weight is suspended, and to improve the riding comfort on the opposite side of the car connected to the rope.

As described above, according to the elevator apparatus of the present invention, a passenger car can be moved up and down without providing a machine room, and a small driving module can be mounted on a counter plate with a flat and small space. It can be provided with a hoisting device which can be constituted in one night.

Next, a second embodiment of the hoisting device in the elevator apparatus according to the present invention will be described with reference to FIG. 9 to FIG.

First, a second embodiment will be described with reference to FIG. 9 and FIG.

The winding mechanism section 727 includes a motor unit 729 and a sea unit 730. The motor unit 729 has a support 731 as shown in FIG. 9 and FIG. The support 731 includes a rectangular plate-shaped stator frame 732 and a cylindrical stator bracket provided at the center of the stator frame 732 so as to protrude rightward in FIG. 9. And a driving motor stator 734 is provided in a fixed state on the outer peripheral portion of the stator bracket 733. The stator 734 includes a stator core 735 and a plurality of coils 736 wound around the stator core 735. A rotating shaft 739 of a driving motor rotor 738 is rotatably supported on the inner peripheral portion of the stator bracket 733 via a bearing 737 made of a ball bearing. The rotor 738 is provided on the rotation shaft 739, the rotor shaft 7400 integrally formed with the rotation shaft 739, and the inner periphery of the rotor yoke 7400. The rotor core 7 41 includes a plurality of permanent magnets 7 42 embedded in the rotor core 7 41, and the inner peripheral surface of the rotor core 7 41 has the above-mentioned stator core 7. It faces the outer peripheral surface of 35 with a predetermined gap. The rotor 738 is provided so as to be rotatable about the rotating shaft 739 with respect to the stator 734. At the end of the rotating shaft 739, a bearing retainer 737a is provided.

At the center of the rotating shaft 739, a through-hole 743 is formed that penetrates in the axial direction. The output member 744 has an insertion shaft 745 and a pulley 746 constituting a rotary output unit integrally, and the insertion shaft 745 is inserted through the insertion hole 744. By doing so, it is detachably attached to the rotating shaft 739. A stopper 745a is attached to an end of the insertion shaft 745 in the axial direction, thereby preventing the insertion shaft 745 from coming off. In addition, a keyway is formed in the outer peripheral part of the insertion shaft part 745 and the insertion hole 7443, and by inserting the key 747 across the keyway, an output member is provided. 7 4 4 is made to rotate integrally with the rotating shaft 7 3 9. With the output member 744 attached to the rotating shaft 739, the pulley 746 projects axially outward from the rotating shaft 739 on the stator frame 732 side.

A plurality of reinforcing ribs 748 protruding in the axial direction are provided on the stator frame 732 by welding, and the belt constituting the power transmission member is hung on the pulley 746. Along the む 49, there is provided a recess 750 that is recessed in the axial direction. The axial tip of each rib 748 is set to be equal to or less than the pulley 746 tip. The motor unit 729 is provided with a speed detector (not shown) for detecting the rotation speed of the rotor 738.

As shown in FIG. 11, the frame 751 of the sheave unit 730 is connected and fixed to the upper portion of the stator frame 732 by connecting bolts 752. A shaft 753 (see FIG. 12) is rotatably attached to the frame 751 in a penetrating state. One end of the shaft 753 has a diameter larger than that of the pulley 746. Large driven pulley 7 54 is provided, and a traction sheave 728 is provided at the other end of the shaft portion 735.The driven pulley 754 and the traction sheave 728 rotate integrally. ing. A belt 749 is stretched between the driven pulley 754 and the pulley 746, and the power transmission mechanism is constituted by the pulley 746, the driven pulley 754 and the belt 794. ing. Further, a plurality of ropes are formed on the outer peripheral portion of the traction sleeve 728, and a plurality of the ropes 725 are wound around the ropes. The mooring unit 729 and the sieve unit 7330 are attached to the frame 755 of the counterweight via an attaching plate 7555a.

In the above configuration, when the rotor 738 of the motor unit 7229 rotates, the pulley 7466 rotates integrally with the rotor 738, and accordingly, the pulley 746 is driven via the belt 749. Pulley 7 5 4 rotates. Then, based on the rotation of the traction sleeve 728 integrally with the driven pulley 754, the passenger car 721 and the countdown weight are moved up and down via the ropes 725. .

According to the above-described embodiment, the following effects can be obtained.

First, in the motor unit 729 of the hoisting mechanism 727, the output member 744 having the pulley 746 constituting the rotation output unit is rotated by the rotation of the driving motor rotor 738. Because it is detachably attached to the shaft 739, for example, when changing the pulley 7466 to change the reduction ratio, or changing the driving motor section to change the output of the driving motor When changing, only the output member 744 or only the drive motor portion can be changed. Also, for example, when either the pulley 7446 or the drive motor portion is replaced for repair, similarly, only the output member 7444 or only the drive motor portion can be replaced, There is no need to disassemble the whole.

In addition, since the bearing 733 can be configured and arranged between the stator bracket 733 and the insertion shaft 745, a large-diameter bearing with a large load capacity can be used, and the loading capacity of the passenger car increases. Accordingly, it is possible to use a large-capacity model as a drive module. Further, the life of the hoisting device 727 can be prolonged. In addition, the stator 734 and the rotor 738 that generate torque are arranged on the outer peripheral side by the diameter of the insertion shaft 745. As a result, the torque can be increased and the motor can be made thinner.

The bully 746 on which the belt 749 is hung protrudes on the stator frame 732 side of the support Ί311 and has relatively high strength near the dog's stator frame 732, The pulley 746 can be supported in a stable state, and vibrations such as torque ripple caused by a frequency inherent to the motor can be reduced. Further, since the stator frame 732 is provided with a plurality of ribs 748 protruding in the axial direction, the strength of the stator frame 732 can be further increased by the ribs 748.

Since the axial end of each rib 7 48 is set to be equal to or less than the axial end of the pulley 7 46, the rib 7 4 8 is provided on the stator frame 7 32. In addition, the axial dimension can be prevented from increasing as much as possible. In addition, since the stator frame 732 is provided with the concave portion 750 which is axially recessed along the belt 749, it is possible to minimize the axial dimension as much as possible. It can be suppressed.

FIG. 13 shows a third embodiment of the hoisting apparatus. This embodiment is different from the above-described first embodiment in the following points. That is, in the stator frame 732, the rib 7448 is not provided.

FIG. 14 shows the fourth embodiment. This embodiment differs from the first embodiment in the following points. That is, the output member 7444 is mounted such that the pulley 7446 projects toward the rotor 738 (the side opposite to the stator frame 732).

FIG. 15 shows a fifth embodiment, which is different from the above-described fourth embodiment in the following points. That is, the pulley 746 that forms the rotation output unit is provided integrally with the rotation shaft 738.

As is apparent from the above description, according to the hoisting device in the elevator device of the present invention, the output member having the rotation output unit can be detachably attached to the rotation shaft of the driving motor rotor. Because it is installed, parts can be easily changed or replaced.

Claims

The scope of the claims

1. A device provided with a hoisting device for raising and lowering the passenger car through the rope in a counterweight for balancing the weight of the passenger car via a rope, wherein the hoisting device is driven A driving sheave having a rotation axis different from the rotation axis of the driving motor, and a traction sheave around which the rope is wound, and transmitting the power of the driving motor to the traction sheave. A power transmission device, comprising: a power transmission device;

2. The power transmission device comprises: a driving wheel provided on a rotating shaft of the driving motor; a driven wheel provided coaxially with the traction sheave; and a driving wheel and a driven wheel. 2. The elevator apparatus according to claim 1, further comprising: an endless cord-like body wound around the body.

3. The driving motor is disposed below the traction sheave, and power is transmitted vertically by an endless cord of the power transmission device. The described elevator device.

4. The elevator according to claim 2 or 3, wherein the traction vehicle is disposed on a hoistway wall side and the driven wheel is disposed on a side opposite to the hoistway wall. Evening equipment.

5. The elevator apparatus according to claim 4, wherein the traction sheave and the rotation support shaft of the driven wheel fixed coaxially to the traction sheave are cantilever beams.

6. The driving motor, the power transmission device, and the traction sheave are installed on a first support member, and the counterweight of the counterweight is installed on a second support member. And the second support member can be connected and separated from each other. The elevator apparatus according to any one of claims 1 to 5, characterized in that:

7. The elevator according to claim 2, wherein the endless cord-like body of the power transmission device is a toothed belt, and the driving and driven wheels are toothed buries. Evening equipment.

8. The elevator according to claim 2, wherein the endless cord of the power transmission device is a chain, and the driving and driven wheels are sprockets. apparatus.

9. The driving wheel of the driving motor and the driven wheel of the traction sheave have a variable distance between their axes, and the tension of the endless cord can be adjusted. The elevator apparatus according to any one of claims 2 to 8, characterized in that:

10. An angle detection device having a rotating wheel that rolls while being in contact with the endless cord-like body, and a rotation angle detector connected to the rotating wheel, further comprising detecting a rotation angle of the driving motor. The elevator apparatus according to any one of claims 2 to 9, characterized in that:

1 1. The endless cord-like body is a toothed belt, the rotating wheel is a toothed pulley, and the toothed bully is rolled while being engaged with the toothed belt to rotate the driving motor. 10. The apparatus according to claim 10, wherein the angle is detected.

1 2. The driving mode is a permanent magnet type mode, and further includes an electric circuit including a rectifier circuit, a frequency variable circuit, a controller, a circuit switching means, and a resistor. The frequency of the winding of the permanent magnet type motor can be set according to a command from the heater. The elevator apparatus according to any one of claims 1 to 11, wherein the elevator apparatus is connected to one of a transformer circuit and a resistor.

13. A method according to any one of claims 1 to 11, wherein a brake is provided in the county weight, and the rotation of the rotor of the driving motor is remotely controlled. The celebrating apparatus described in Crab.

14. An intermediate pulley around which the rope is wound is provided on a structure where the elevator is provided, and a brake is provided on the intermediate pulley, wherein the intermediate pulley is provided with a brake. The celebrating apparatus described in Crab.

15. If the difference between the rotation speed command to the drive motor and the rotation speed based on the angle detected by the rotation angle detector becomes equal to or greater than a predetermined value, the power to the drive motor is increased. 12. The elevator apparatus according to claim 10, wherein the supply is stopped and the brake is operated.

16. The method according to claim 1, wherein the periphery of the county weight is covered with a cover, and a sound absorbing material is provided in a space of the county weight surrounded by the power bar. Or the elevator device according to any one of Items 15 to 15.

17. A radiator for releasing heat of the driving motor is provided on the side of the hoistway wall of the counting tower and near the driving motor, and upper and lower portions of the counting tower are provided. The elevator apparatus according to any one of claims 1 to 15, wherein a streamline-shaped cover is provided for each.

1 8. An engaging member is provided at the top of the county weight so that it can be stored. During the inspection work, the engaging member protrudes to fix the county weight guide rail to the hoistway wall. The engaging member is engaged with the rail support portion, and the power supply weight is suspended from the rail support portion. 18. The elevator device according to any one of items 1 to 17.

19. A guide rail provided vertically in the hoistway to guide the county weight, a pressing means provided in the county weight, and pressed by the guide rail by the pressing means. And a roller that rolls on the guide rail so as to rotate on its own. Even if the roller is pressed against the guide rail by the reaction of the rotational driving force of the driving motor, the roller is rotatable. The elevator apparatus according to any one of claims 1 to 18, wherein the count weight can be smoothly guided by a roller.

20. The hoisting device includes a driving motor stator fixed to the support and a driving motor rotating rotatably provided to the stator via a bearing. And an output member having a driving wheel attached to the rotor so as to be integrally rotatable and detachable, and protruding outward from the rotor in the axial direction. 2. The elevator according to claim 1, wherein

21. The apparatus according to claim 20, wherein the support has a stator frame at one end in an axial direction, and the driving wheel protrudes toward the stator frame. The described elevator device.

22. The support according to claim 20, wherein the support has a stator frame at one end in the axial direction, and the stator frame is provided with a rib protruding in the axial direction. 3. The elevator device according to claim 1.

23. The elevator according to claim 24, wherein an axial end of said rib is set to be lower than an axial end of said driving wheel. Evening equipment.

2 4. The stator frame, wherein in the along the endless cord-like member, Jer base Isseki apparatus according to a second 1 wherein claims, characterized in that a recess recessed in舢direction ₍

25. The elevator apparatus according to claim 20, wherein the rotor has a plurality of permanent magnets embedded in the rotor.