JP6797101B2 - Elevator device - Google Patents

Description

The present invention relates to an elevator device.

Conventionally, as an elevator device, a machine room is installed on the roof above the hoistway, and a hoisting machine for driving a car and a control device for controlling the driving of the hoisting machine are arranged inside the machine room. It was. On the other hand, so-called machine room-less type elevator devices have been developed in which the hoisting machine and the control device are made compact and the machine room is not required.

In the case of a machine room-less type elevator device, the signal processing system and the control device for obtaining the drive power supply are configured as a control panel housed in a thin metal housing, and are installed in a gap in the hoistway.
FIG. 4 is a diagram showing an example of a control panel installed in a conventional hoistway. The control panel 1 has a configuration in which four metal housings 1a, 1b, 1c, and 1d are vertically connected, and is installed on the inspection table floor surface 6 at a height of about 1 m from the bottom surface of the pit.
Each of the metal housings 1a, 1b, 1c, and 1d has a height of about 1 m, and the entire control panel 1 has a height of about 4 m.

The main circuit unit 2 is built in the metal housing 1a at the bottom (first stage). The main circuit unit 2 is composed of a converter, an inverter, and the like for obtaining power supplied to the hoist.
The signal processing unit 3 is built in the second-stage metal housing 1b. The signal processing unit 3 constitutes a control device for the elevator device.
The regenerative resistance portion 4 is built in the third-stage metal housing 1c. The regenerative resistance unit 4 includes a resistor connected to the hoisting machine when the brake for stopping the car is activated.
The power storage unit 5 is built in the fourth-stage metal housing 1d. The power storage unit 5 is composed of a secondary battery used in the event of a power failure.

As shown in FIG. 4, the main circuit unit 2 and the signal processing unit 3 are arranged in the first-stage and second-stage metal housings 1a and 1b for maintenance of the main circuit unit 2 and the signal processing unit 3. This is to facilitate inspection. That is, when performing maintenance and inspection, a worker enters the pit of the hoistway, removes the lids provided on the metal housings 1a and 1b, and inspects the internal main circuit unit 2 and the signal processing unit 3. Do the work. Generally, the control panel 1 is separated from the pit floor surface by 1 m or more. Therefore, the inspection work is performed by assembling the inspection table 6 which is folded and installed at the lowermost part of the first-stage metal housing 1a and standing up on it.
Since the metal housings 1c and 1d of the third and fourth stages have a height of 2 m or more from the floor surface of the inspection table, they cannot reach the workers standing on the floor surface and can easily see the inside. Can not. However, during normal maintenance and inspection, it is rare to perform maintenance work on the regenerative resistance unit 4. In addition, the power storage unit 5 performs maintenance work from above the car. Therefore, even if it is placed in a place that is out of the reach of workers as shown in FIG. 4, there is no problem in performing maintenance and inspection.

Patent Document 1 has a multi-stage configuration in which a power control circuit is arranged in the lower stage, a control circuit is arranged in the middle stage, and a power supply side stack and a motor side stack are arranged in the upper stage when the control panel is installed in the machine room of the elevator. What is described.

Japanese Unexamined Patent Publication No. 2006-151577

By the way, in the control panel 1 shown in FIG. 4, the resistor arranged in the regenerative resistance unit 4 generates heat as the car brakes. For this reason, the conventional metal housing 1c in which the regenerative resistance portion 4 is housed is provided with an opening for heat dissipation so that the heat generated inside can be released to the outside of the metal housing 1c.

On the other hand, depending on the application of the elevator device, there are cases where the metal housing 1c cannot be provided with an opening for releasing heat. For example, in the case of an emergency elevator device, even if water is discharged in the event of a fire, it is required to have a structure in which water does not enter the equipment inside the metal housing so that it can be continuously operated even in the event of a fire.
When the metal housing 1c is configured to be close to a sealed structure in which water does not enter, the heat generated by the regenerative resistance portion 4 stays in the metal housing 1c, and the heat is also generated in the metal housing 1d adjacent to the metal housing 1c. It will be transmitted. The secondary battery built in the metal housing 1d is not preferable because it may deteriorate rapidly when used in a high temperature environment.

An object of the present invention is to suppress deterioration due to heat of parts arranged on the control panel while satisfying the performance as an emergency elevator device in a machine room-less type elevator device in which a control panel is arranged on a hoistway. ..

In order to solve the above problems, for example, the configuration described in the claims is adopted.
The present invention includes a plurality of means for solving the above problems. For example, a plurality of housings installed and stacked on the hoistway of a car, and a first of the plurality of housings. A drive processing unit that is arranged in the housing of the vehicle to drive and control the car, a power storage unit that is arranged in the second housing of the plurality of housings and equipped with a secondary battery, and a plurality of housings. The second housing is arranged on the upper side of the first housing and has a regenerative resistance portion equipped with a resistor that functions as a brake for the car and is arranged in the third housing. The third housing is arranged on the upper side of the housing.

According to the present invention, the regenerative resistance portion in which the heat generating component is arranged is arranged on the upper side of the power storage unit, and the heat generated in the regenerative resistance portion is less likely to be transferred to the power storage unit arranged on the lower side of the regenerative resistance portion. , Deterioration of the secondary battery provided in the power storage unit can be suppressed.
Issues, configurations and effects other than those described above will be clarified by the description of the following embodiments.

It is a perspective view which shows the structural example of the control panel of the elevator device by one Embodiment of this invention. It is a perspective view which shows the structural example of the hoistway of the elevator apparatus by one Embodiment of this invention. It is a block diagram which shows the circuit structure example by the control panel of the elevator apparatus by one Embodiment of this invention. It is explanatory drawing which shows the structural example of the control panel of the conventional elevator apparatus.

Hereinafter, an example of an embodiment of the present invention (hereinafter, referred to as “this example”) will be described with reference to FIGS. 1 to 3.

[1. Control panel configuration]
FIG. 1 shows a configuration example of a control panel 100 included in the elevator device of this example.
The elevator device of this example is configured as a machine room-less type elevator device, and a control panel 100 is installed in a hoistway 10 (FIG. 2).

The control panel 100 is formed to be thin, and has a configuration in which a plurality of metal housings 110 to 150 are vertically stacked. That is, the first metal housing 110 is installed on the inspection table bottom surface 11 which is assembleably installed at a height of about 1 m from the bottom surface of the pit, and the second metal housing 110 is placed on the first metal housing 110. Install 120. Further, the third metal housing 130 is installed on the second metal housing 120, the fourth metal housing 140 is installed on the third metal housing 130, and the fourth metal housing 140 is placed on the fourth metal housing 140. 5 Install the metal housing 150. The bottom surface 11 of the inspection table is assembled when a maintenance worker enters the pit and performs maintenance and inspection.

The metal housings 110 to 150 have substantially the same size, and their heights H1, H2, H3, H4, and H5 are about 1 m. Therefore, the height of the entire control panel 100 (total of h1 to H5) is about 5 m. However, it is an example that the sizes of the metal housings 110 to 150 are substantially the same, and different sizes may be set according to the size of the processing unit housed in the metal housings 110 to 150. In particular, as will be described later, the height H3 of the third metal housing 130 having a hollow inside may be made smaller than the other metal housings 110, 120, 140, 150. Further, the thickness (horizontal depth) of each of the metal housings 110 to 150 needs to be very thin so as to fit in the dead space near the wall surface of the hoistway 10, for example, to a thickness of about 10 cm. To do.

Each of the metal housings 110 to 150 is made of a metal such as stainless steel and has a substantially sealed structure. For this reason, even if water is discharged by the fire department in the event of a fire, water does not enter the inside of the housing.
Lid members 111 to 151 are attached to the front surfaces of the metal housings 110 to 150 by screwing or the like, and the inside of each metal housing 110 to 150 can be viewed by removing the lid members 111 to 151. be able to.

The auxiliary housing 112 is arranged in the first metal housing 110 at the bottom, and the main circuit unit 300 is housed inside the auxiliary housing 112.
An auxiliary housing 122 is arranged in the second metal housing 120 in the second stage, and the signal processing unit 200 is housed inside the auxiliary housing 122.
The third metal housing 130 in the third stage has a hollow inside, and contains only the signal cables 600 drawn from the other metal housings 110, 120, 140, 150.

An auxiliary housing 142 is arranged in the fourth metal housing 140 of the fourth stage, and the power storage unit 400 is housed inside the auxiliary housing 142.
An auxiliary housing 152 is arranged in the fifth metal housing 150 at the fifth stage, and the regenerative resistance portion 500 is housed inside the auxiliary housing 152.
The signal cable 600 that connects the main circuit unit 300, the signal processing unit 200, the power storage unit 400, and the regenerative resistance unit 500 passes through the inside of the metal housing 110 to 150. The signal cable (not shown) connected to the outside such as the input unit and the hoisting machine has a structure of being pulled out from the metal housing 110 to 150.
The specific functions of each processing unit such as the main circuit unit 300 will be described later (FIG. 3).

[2. Arrangement in the hoistway]
FIG. 2 shows a state in which the control panel 100 of this example is arranged in the hoistway 10.
A car 12 is suspended from the hoistway 10 by a main rope 13. A counterweight 14 is attached to the other end of the main rope 13, and the counterweight 14 also moves up and down as the car 12 inside the hoistway 10 moves up and down. A tail code 15 is connected to the lower part of the car 12.

A thin control panel 100 is installed on the wall surface of the hoistway 10. The wall surface on which the control panel 100 is installed is a wall surface other than the surface on which the door for getting on and off the car 12 is installed. The control panel 100 is installed at a position where it does not come into contact with the car 12, and is also installed at a position where it does not come into contact with the hanging tail cord 15 provided at the lower part of the car 12.
Although not shown in FIG. 2, the control panel 100 is fixedly installed on a member such as a support column arranged in the hoistway 10.

[3. Each processing unit of the control panel]
FIG. 3 shows an example of a circuit configuration using the control panel 100 of the elevator device of this example.
The signal processing unit 200 built in the control panel 100 includes a control device 201 that controls the operation of the elevator device, and the control device 201 controls each unit. Then, the main circuit unit 300 performs a process of generating a drive signal of the hoisting machine 800 based on the control of the control device 201. That is, the signal processing unit 200 includes a converter 301 that converts a power source 700 such as a three-phase alternating current supplied from the outside into direct current, and an inverter 302 that converts direct current into alternating current for driving a hoisting machine. The output alternating current is supplied to the hoisting machine 800. Therefore, the signal processing unit 200 and the main circuit unit 300 form a drive processing unit that controls the drive of the car.

Further, between the converter 301 and the inverter 302, a regenerative unit is equipped with a power storage unit 400 in which a secondary battery used as an emergency power source in the event of a power failure is arranged, and a resistor that functions as a brake for the car 12. The resistance portion 500 is connected. Charging / discharging of the power storage unit 400 and connection of the regenerative resistance unit 500 are executed under the control of the control device 201.

[4. Effect of using the control panel]
Next, the effect of the elevator device including the control panel 100 of this example will be described.
First, since the control panel 100 of this example is arranged in the hoistway 10, it is not necessary to separately install a machine room as an elevator device, and it can be configured as a machine room-less type elevator device. In particular, since the control panel 100 has a waterproof and almost airtight structure, even if water is discharged in the event of a fire, water does not enter the inside of the control panel 100 and a fire occurs. It will be possible to operate it as an emergency elevator.

Further, the control panel 100 of this example has a very large size of about 5 m in height because the third metal housing 130 having a hollow inside is provided. Therefore, a worker standing on the bottom surface 11 of the inspection table cannot touch all the metal housings 110 to 150 unless a dedicated ladder or the like is prepared.

However, at the time of normal inspection, only the signal processing unit 200 and the main circuit unit 300, which are arranged within the reach of the worker standing on the bottom surface 11 of the inspection table, need to be inspected. It is rare to inspect the regenerative resistance unit 500. In addition, the power storage unit 400 can perform maintenance work from above the car.
That is, although the control panel 100 of this example has a very large size, maintenance and inspection can be easily performed in the same manner as the conventional control panel.

Further, in the elevator device of this example, since the control panel 100 has a structure having substantially airtightness, the heat generated by the resistor of the regenerative resistance portion 500 arranged in the fifth metal housing 150 is generated by the fifth metal housing. It becomes difficult to be discharged from the inside of the body 150 to the outside. Here, since the fifth metal housing 150 is a housing arranged at the uppermost stage, heat transfer to the other metal housings 110 to 140 can be minimized. Specifically, since the power storage unit 400 is arranged in the fourth metal housing 140 arranged below the fifth metal housing 150, heat is transferred from the regenerative resistance unit 500 to the power storage unit 400. Can be minimized.
Therefore, it is possible to prevent the secondary battery arranged in the power storage unit 400 from becoming hot due to the heat of the regenerative resistance unit 500, and it is possible to minimize the deterioration of the secondary battery due to high temperature.

Further, since the control panel 100 of this example is arranged in a housing in which each processing unit is duplicated, heat is not easily transferred to other processing units from this point as well. For example, the regenerative resistance portion 500 is housed in the auxiliary housing 152 and then further housed in the fifth metal housing 150. Therefore, heat transfer to other metal housings 110 to 140 can be suppressed as much as possible. Further, by configuring as a duplicated housing, the effect of preventing water from entering each processing unit from the outside is further enhanced.

Further, since the third metal housing 130 is provided on the lower side of the fourth metal housing 140 in which the inside is hollow and only the signal cable 600 is arranged, the first metal housing 110 and the first metal housing 110 on the lower side are further provided. 2 It is also possible to suppress the transfer of heat to the metal housing 120. Therefore, the signal processing unit 200 and the main circuit unit 300 arranged in the first metal housing 110 and the second metal housing 120 are also not used in a high temperature environment.

Further, the signal cable 600 inside the first metal housing 110 to the fifth metal housing 150 is arranged inside the metal housing 110 to 150 so as not to be pulled out to the outside of the metal housing 110 to 150. did. As a result, it is not necessary to consider the weather resistance of the signal cable 60.

On the other hand, in the control panel 100, the configuration is such that the third metal housing 130 having a hollow inside is not installed, and a gap is provided between the second metal housing 120 and the fourth metal housing 140. Is also possible. However, in that case, the signal cable 600 is exposed to the hoistway outside the control panel 100 between the second metal housing 120 and the fourth metal housing 140.
When the signal cable 600 is exposed to the outside of the control panel 100, the signal cable 600 needs to use a so-called outdoor cable having excellent weather resistance, so that an expensive signal cable is required.
On the other hand, since the signal cable 600 used by the control panel 100 of this example is arranged inside the metal housing 110 to 150, it may be a normal cable for indoor wiring. Therefore, it is possible to suppress an increase in the cost of the signal cable due to the space between the second metal housing 120 and the fourth metal housing 140.

[5. Modification example]
In the above-described embodiment, the signal processing unit 200 and the main circuit unit 300 are arranged in separate metal housings 110 and 120 as the control panel 100, respectively. On the other hand, for example, the drive processing unit including the signal processing unit 200 and the main circuit unit 300 may be housed in one housing.

Further, in the control panel 100 of the above-described embodiment, a third metal housing 130 in which only the signal cable 600 is arranged is provided between the second metal housing 120 and the fourth metal housing 140. I did. By providing the third metal housing 130 in this way, it is possible to make it difficult for the heat from the regenerative resistance portion 500 to be transferred to the lower metal housings 110 and 120.

In the case of a small elevator device in which the height of the power storage unit 400 is low with respect to the bottom surface 11 of the inspection table and maintenance can be performed by an operator from the inspection table, the third metal housing 130 having a hollow inside is omitted. Then, the second metal housing 120 and the fourth metal housing 140 may be directly connected.

Alternatively, even when the third metal housing 130 having a hollow inside is provided, the fifth metal housing 150 containing the regenerative resistance portion 500 and the fourth metal housing 140 containing the power storage unit 400 are located between the fifth metal housing 150 and the fourth metal housing 140 containing the power storage unit 400. 3 The metal housing 130 may be arranged. Further, as in the example of FIG. 1, a third metal housing 130 having a hollow inside is provided between the second metal housing 120 and the fourth metal housing 140, and the regenerative resistance portion 500 is further provided. Another metal housing having a hollow inside may be arranged between the stored fifth metal housing 150 and the fourth metal housing 140 containing the power storage unit 400.
In this way, the regenerative resistance portion 500 in which the resistor which is a heat generating member is arranged may be separated from the other processing portion.

Furthermore, the present invention is not limited to the above-described embodiment, and includes various modifications. For example, the above-described embodiment has been described in detail in order to explain the present invention in an easy-to-understand manner, and is not necessarily limited to those having all the described configurations.
Further, in the block diagram shown in FIG. 3, only the control lines and information lines considered necessary for explanation are shown, and not all the control lines and information lines are necessarily shown in the product. In practice, it can be considered that almost all configurations are interconnected. Further, the size (height) of each housing shown in the above-described embodiment is also an example, and may be configured with other sizes.

10 ... hoistway, 11 ... bottom of inspection table, 12 ... car, 13 ... main rope, 14 ... balance weight, 15 ... tail cord, 100 ... control panel, 110 ... first metal housing, 120 ... second metal housing Body, 130 ... 3rd metal housing, 140 ... 4th metal housing, 150 ... 5th metal housing, 130a ... inside the housing, 111, 121, 131, 141, 151 ... lid member, 112, 122, 142 , 152 ... Auxiliary housing, 200 ... Signal processing unit, 201 ... Control device, 300 ... Main circuit unit, 301 ... Converter, 302 ... Inverter, 400 ... Power storage unit, 500 ... Regenerative resistance unit, 600 ... Signal cable, 700 ... Power supply, 800 ... hoisting machine

Claims (3)

Multiple housings installed on the hoistway of the car and stacked,
A drive processing unit, which is arranged in the first housing among the plurality of housings and controls the driving of the car,
A power storage unit arranged in a second housing among the plurality of housings and equipped with a secondary battery,
It is provided with a regenerative resistance unit which is arranged in a third housing among the plurality of housings and is equipped with a resistor which functions as a brake of the car.
The second housing is arranged on the upper side of the first housing, and the third housing is arranged on the upper side of the second housing .
A fourth housing that constitutes one of the plurality of housings between the first housing and the second housing, or between the second housing and the third housing. An elevator device in which a housing is arranged so that a cable connecting the drive processing unit, the power storage unit, and the regenerative resistance unit passes through the inside of the fourth housing . The drive processing unit, the power storage unit, and the regenerative resistance unit are housed in another housing inside the housing in which the drive processing unit, the power storage unit, and the regenerative resistance unit are housed, and the respective housings are duplicated to provide waterproofness. did
The elevator device according to claim 1 . The drive processing unit includes a signal processing unit that performs control processing and a main circuit unit that processes the drive signal under the control of the signal processing unit.
The signal processing unit and the main circuit unit are housed in separate housings.
The elevator device according to claim 1 or 2 .

Images