KR102328309B1 - Elevator - Google Patents

Abstract

The present invention relates to an elevator that is easy to ascend and descend while maintaining a horizontal center and does not have a risk of falling even in a state in which power transmission is cut off.
In the present invention, a drive motor is installed in the center of the lower part of the car, a rotary shaft having a worm is installed at one end, and a pinion gear that operates in conjunction with the worm and racks are installed at the four corners of the hoistway. An elevator that ascends and descends is started.
The elevator according to the present invention installs a motor in the center of the lower part of the car and transmits power in a rack-and-pinion method, so that no inclination to either side occurs, so gear wear can be reduced, and power transmission can be achieved by applying a worm gear Even if it is blocked, it automatically brakes to provide a safe elevator.

Description

Elevator {ELEVATOR}

The present invention relates to an elevator, and relates to an elevator that is easy to ascend and descend while maintaining a horizontal center and does not have a risk of falling even in a state in which power transmission is cut off.

If the elevators currently used are divided according to the operating structure, the helical geared type elevator, the hydraulic elevator type, and the machine roomless elevator type are mainly used. The rope type elevator connects the car and the counterweight with a rope and raises and lowers using a pulley, and the hydraulic elevator uses a hydraulic cylinder to raise and lower. The rope type elevator has a machine room at the top, and the hydraulic elevator has a machine room at the bottom. A traction machine, an electric motor, a control panel and a governor are installed in the machine room. On the other hand, an elevator without a machine room is a method of elevating and lowering with a belt without a separate machine room, and a representative example is a flat belt type.

The above three methods require a separate braking device to prevent sudden interruption of power transmitted to the elevator or a fall. For example, a braking device of a rope-type elevator will be described.

In the case of a rope type elevator, the magnetic brake of the hoisting machine stopped the elevator car during operation, but if the brake liner of the magnetic brake wears out and slipping occurs, there is no device to stop the elevator. The phosphor and shock absorber acted to stop the elevator. As such, when the rope elevator falls to the lower part due to slippage, there is a risk that the passenger may be damaged. In order to solve the brake problem, various types of braking devices have been proposed in the rope elevator, but a rope elevator having a brake that guarantees perfect safety cannot be constructed in reality.

1. Republic of Korea Patent Publication No. 10-2011-0123767 (published on November 15, 2011)

An object of the present invention is to solve the above problems, and while applying the rack and pinion method, it is possible to transmit power from the center of gravity, thereby reducing gear wear and providing a safe elevator that does not require a separate brake device.

The above object of the present invention is to install the first rack, the second rack, the third rack and the fourth rack at the four corners of the hoistway, and as an elevator having a car that moves up and down along the racks, the lower surface of the car The drive motor installed in the center of the outside, the first bevel gear rotating shaft and the second bevel gear, which are installed in the +Y direction and the -Y direction of the lower surface of the car based on the drive motor, respectively, are engaged at one end and rotate by the rotation of the drive motor The gear rotating shaft and the first worm rotating shaft installed in the -X direction with respect to the other end of the first bevel gear rotating shaft, the other end and one end of the first bevel gear rotating shaft are coupled to rotate, and the other end of the first bevel gear rotating shaft It is installed in the +X direction with respect to the end, the second worm rotating shaft rotates by coupling the other end and one end of the first bevel gear rotating shaft, and is installed in the -X direction with respect to the other end of the second bevel gear rotating shaft, A third worm rotating shaft that rotates by coupling the other end and one end of the second bevel gear rotating shaft, is installed in the +X direction with respect to the other end of the second bevel gear rotating shaft, and the other end and one end of the second bevel gear rotating shaft are connected to each other. A fourth worm rotating shaft coupled and rotating, a first main pinion gear installed below the other end of the first worm rotating shaft and engaged with the first rack), and a second worm rotating shaft installed below the other end and engaged with the second rack The second main pinion gear operating, the third main pinion gear installed below the other end of the third worm rotating shaft and engaged with the third rack, and the fourth main pinion gear installed below the other end of the fourth worm rotating shaft and operated by meshing with the fourth rack It is achievable by an elevator characterized in that it includes 4 main pinion gears.

The elevator according to the present invention installs a motor in the center of the lower part of the car and transmits power in a rack-and-pinion method, so that no inclination to either side occurs, so gear wear can be reduced, and power transmission can be achieved by applying a worm gear Even if it is blocked, it automatically brakes to provide a safe elevator.

1 is a perspective view of an elevator in accordance with an embodiment in accordance with the present invention viewed from the lower direction.
Figure 2 is a bottom view of the elevator car according to an embodiment according to the present invention.
FIG. 3 is a partial side view illustrating a process in which a driving force of a driving motor installed on a lower surface of a car is transmitted as showing a part A shown in FIG. 2 .
Figure 4 is a partial perspective view for explaining in detail the part B shown in Figure 2;
5 is a bottom view of an elevator car according to an embodiment of the present invention.

The terms used in the present invention are only used to describe specific embodiments, and are not intended to limit the present invention. The singular expression includes the plural expression unless the context clearly dictates otherwise. In this specification, terms such as "comprises" or "have" are intended to designate that the features, numbers, steps, operations, components, parts, or combinations thereof described in the specification exist, but one or more other features It should be understood that this does not preclude the existence or addition of numbers, steps, operations, components, parts, or combinations thereof.

In addition, in this specification, "on or on top of" means to be located above or below the target part, and does not necessarily mean to be located above the direction of gravity. Also, when a part of a region, plate, etc. is said to be “on or on” another part, it is not only when another part is in contact with or spaced “on or on” another part, but also when another part is in the middle. Including cases where there is

In addition, in this specification, when a component is referred to as "connected" or "connected" with another component, the component may be directly connected or directly connected to the other component, but in particular It should be understood that, unless there is a description to the contrary, it may be connected or connected through another element in the middle.

Also, in this specification, terms such as first, second, etc. may be used to describe various elements, but the elements should not be limited by the terms. The above terms are used only for the purpose of distinguishing one component from another.

The present invention relates to an elevator without a machine room, and to a rack-and-pinion type elevator. Although rack-and-pinion type elevators are still used in some industries, the rack-and-pinion type elevators are not widely used even for high floors due to the operation noise of gears and wear problems of the pinion gears.

Hereinafter, preferred embodiments, advantages and features of the present invention will be described in detail with reference to the accompanying drawings.

1 is a perspective view of an elevator according to an embodiment in accordance with the present invention viewed from the lower direction. 1, the elevator according to the present invention has a structure in which racks 20c and 20d are installed at the four corners of the hoistway 200, and the car 100 moves along the racks 20c and 20d. . A driving motor 60 is installed in the lower center of the car 100, and a plurality of rotation shafts are rotated by the driving motor 60 to rotate the main pinion gears 50a, 50b, 50c, and 50d, and the main pinion gear 50a , 50b, 50c, 50d) and the rack (20c, 20d) has a structure that moves up and down while being engaged.

Figure 2 is a bottom view of the elevator car according to an embodiment according to the present invention, showing a structure installed on the lower surface. For convenience of description, a horizontal direction in the drawing is referred to as an X-axis direction, and a vertical direction in the drawing is referred to as a Y-axis direction. In addition, when displaying the detailed position, the left direction is the -X direction based on the vertical line passing through the center point when the lower surface of the car 100 is divided into 4 by horizontal and vertical lines with the center where the driving motor is installed as the center point. and the right direction is denoted as the +X direction. Similarly, with respect to a horizontal line passing through the center point, an upper direction is indicated as a +Y direction, and a lower direction is indicated as a -Y direction. A driving motor (not shown) is installed in the lower center, and the first bevel gear rotating shaft 11a and the second bevel gear rotating shaft 11b are rotated by the rotational force of the driving motor. A fifth bevel gear 31a and a seventh bevel gear 33a are installed at both ends of the first bevel gear rotation shaft 11a, respectively. The plurality of rotation shafts 11a, 11b, 10a, 10b, 10c, 10d, 103, and 10f shown in FIG. 2 are fixed and rotated by the plurality of rotation shaft supporters 15 that are firmly fixedly installed on the lower surface.

The fifth bevel gear 31a is rotated by the driving motor, thereby rotating the first bevel gear rotating shaft 11a, and the seventh bevel gear 33a connected thereto rotates. The first worm rotating shaft 10a and the second worm rotating shaft 10b are rotated by the seventh bevel gear 33a rotation. A first bevel gear 30a is installed at one end of the first worm rotation shaft 10a, and a first worm gear 40a is provided at the other end. The first bevel gear 30a is rotated by the seventh bevel gear 33a, which causes the first worm rotation shaft 10a to rotate, and the first worm gear 40a connected thereto rotates. By the rotation of the first worm gear 40a, the first main pinion gear 50a installed in the lower part (upper part, but substantially lower in the drawing) of the first worm gear 40a rotates along the first rack 20a ( 100) moves up and down between the hoistways.

As shown in Fig. 2, the elevator driving device according to the present invention has an X-axis and Y-axis symmetric structure.

First, a Y-axis symmetric structure will be described. Until now, the fifth bevel gear 31a is rotated by the driving motor, which causes the first bevel gear rotation shaft 11a to rotate, and the seventh bevel gear 33a connected thereto rotates and ultimately the first rack 20a ) along the first main pinion gear (50a) has been described to move up and down while meshing. In a similar manner, when the seventh bevel gear 33a rotates, the second bevel gear 30b rotates, thereby rotating the second worm rotating shaft 10b, and the second worm gear 40b connected thereto rotates. . As the second main pinion gear 50b installed under the second worm gear 40b rotates by the rotation of the second worm gear 40b, the car 100 moves up and down along the second rack 20b between the hoistways. will become

Similar to the method in which the first worm rotary shaft 10a and the second worm rotary shaft 10b drive while having a Y-axis symmetrical structure, the third worm rotary shaft 10c and the fourth worm rotary shaft 10d also have a Y-axis symmetrical structure. is driven with

Next, the X-axis symmetric structure will be described. The first bevel gear rotating shaft 11a and the second bevel gear rotating shaft 11b are rotated by the rotational force of a driving motor (not shown) installed in the lower center. A sixth bevel gear 31b and an eighth bevel gear 33b are installed at both ends of the second bevel gear rotating shaft 11b, respectively. The sixth bevel gear 31b rotates by the driving motor, thereby rotating the second bevel gear rotating shaft 11b, and the eighth bevel gear 33b connected thereto rotates. The third worm rotating shaft 10c and the fourth worm rotating shaft 10d are rotated by the eighth bevel gear 33b rotation. A third bevel gear 30c is installed at one end of the third worm rotating shaft 10c, and a third worm gear 40c is provided at the other end. The third bevel gear 30c is rotated by the eighth bevel gear 33b, thereby rotating the third worm rotating shaft 10c, and the third worm gear 40c connected thereto is rotated. As the third main pinion gear 50c installed under the third worm gear 40c rotates by the rotation of the third worm gear 40c, the car 100 moves up and down along the third rack 20c between the hoistways. .

In a similar manner, when the eighth bevel gear 33b rotates, the fourth bevel gear 30d rotates, which causes the fourth worm rotation shaft 10d to rotate, and the fourth worm gear 40d connected thereto rotate. do. As the fourth main pinion gear 50d installed in the lower part of the fourth worm gear 40d rotates by the rotation of the fourth worm gear 40d, the car 100 moves up and down along the fourth rack 20d between the hoistways. will become

The first main pinion gear 50a and the third main pinion gear 50c are fixedly installed on the first pinion gear rotating shaft 10e and rotate together. Similarly, the second main pinion gear 50b and the fourth main pinion gear 50d are fixedly installed on the second pinion gear rotating shaft 10f and rotate together.

FIG. 3 is a partial side view illustrating a process in which a driving force of a driving motor installed on a lower surface of a car is transmitted, which shows a portion A shown in FIG. 2 . A driving motor 60 is fixedly installed in the center of the lower surface of the car 100 . The driving motor 60 includes a motor driving shaft 61 , and a driving shaft bevel gear 35 is installed on the corresponding motor driving shaft 61 . A fifth bevel gear 31a and a sixth bevel gear 31b are installed on the lower left and right sides of the drive shaft bevel gear 35 to engage and rotate, respectively. As shown in FIG. 3, the drive shaft bevel gear 35 is rotated by the rotation of the motor drive shaft 61, and the fifth bevel gear 31a and the sixth bevel gear 31b are rotated by meshing therewith.

FIG. 4 is a partial perspective view for explaining in detail part B shown in FIG. 2 . It can be seen that a second worm gear 40b is installed at the other end of the second worm rotating shaft 10b, and a second main pinion gear 50b that rotates while meshing with the second worm gear 40b is installed under the second worm gear 40b. The second main pinion gear 50b is engaged with the second rack 20b to move the car 100 up and down.

However, as shown in FIG. 4, installing the second main pinion gear 50b under the second worm gear 40b and matching it with the second rack 20b is not easy due to problems in design tolerance and installation space, etc. not. In order to solve this problem, each pinion gear rotating shaft (10e, 10f) is extended to the outside, and additional pinion gears (50a', 50b', 50c', 50d') are formed at the other end of each extended rotating shaft (10e, 10f). ) can be installed.

5 is a bottom view of an elevator car according to an embodiment according to the present invention, showing a structure installed on the lower surface. Coordinates are displayed in the same manner as in FIG. 2 . Except for the configuration related to the pinion gear rotation shaft (10e, 10f) and the additional pinion gear (50a', 50b', 50c', 50d'), the rest of the configuration is the same as that of FIG. 2 , so a description thereof will be omitted. Compared with the structure shown in FIG. 2 , in the elevator shown in FIG. 5 , the first pinion gear rotating shaft 10e and the second pinion gear rotating shaft 10f are respectively extended outwardly. A first part having a slightly larger diameter than the first main pinion gear 50a is installed at one end of the extended first pinion gear rotating shaft 10e, and the first part pinion gear 50a' is installed, and the first part pinion gear 50a' It can be seen that the first rack 20a was installed by moving the first rack 20a upward from the installation position shown in FIG. 2 to engage and operate with the first rack 20a. A third part having a slightly larger diameter than the third main pinion gear 50c is installed at the other end of the similarly extended first pinion gear rotation shaft 10e, and a third part pinion gear 50c' is installed, and the third part pinion gear 50c It can be seen that ') was installed by moving the third rack 20c downward from the installation position shown in FIG. 2 to operate in engagement with the third rack 20c.

A second part having a slightly larger diameter than the second main pinion gear 50b is installed at one end of the similarly extended second pinion gear rotation shaft 10f, and a second part pinion gear 50b' is installed, and the second part pinion gear 50b It can be seen that ') was installed by moving the second rack 20b upward from the installation position shown in FIG. 2 to operate in engagement with the second rack 20b. At the other end of the extended second pinion gear rotating shaft 10f, a fourth part having a slightly larger diameter than the fourth main pinion gear 50d is installed with a pinion gear 50d', and the fourth part is a pinion gear 50d'. It can be seen that the fourth rack 20d was installed by moving the fourth rack 20d downward from the installation position shown in FIG. 2 to engage and operate.

The braking force of the elevator according to the present invention will be described. The elevator according to the present invention is operated by a rack and pinion gear method by the driving force of a driving motor, and the pinion gear has a structure driven by rotation of a worm gear. Due to the structure of the worm gear and pinion gear, when the drive motor rotates, the pinion gear can be easily driven by rotating the worm gear. Since the pinion gear cannot rotate the worm gear, it is firmly fixed in its current position. Therefore, there is an advantage that safe operation is possible without a separate braking device.

In addition, the elevator according to the present invention has a drive motor in the center of the lower surface, and transmits power to the rack installed at the four corners of the hoistway in a symmetrical structure of X-axis and Y-axis. can be minimized Due to this structure, the weight distribution occurs evenly among the rack and pinion gear pairs installed at each of the four corners, so frictional force can be reduced, enabling smoother operation, and gear wear can be minimized.

Although preferred embodiments of the present invention have been described above using specific terms, such terms are only for clearly describing the present invention, and the embodiments and described terms of the present invention depart from the spirit and scope of the following claims. It is self-evident that various changes and changes can be made without being performed. Such modified embodiments should not be individually understood from the spirit and scope of the present invention, but should be considered to fall within the scope of the claims of the present invention.

10a, 10b, 10c, 10d: worm axis of rotation
10a: first worm rotation shaft 10b: second worm rotation shaft
10c: third worm rotation shaft 10d: fourth worm rotation shaft
10e, 10f: pinion gear rotation shaft
10e: first pinion gear rotation shaft 10f: second pinion gear rotation shaft
11a, 11b: bevel gear rotation shaft
11a: first bevel gear rotating shaft 11b: second bevel gear rotating shaft
15: rotation shaft support
20a, 20b, 20c, 20d: rack
20a: 1st rack 20b: 2nd rack
20c: 3rd rack 20d: 4th rack
30a, 30b, 30c, 30d, 31a, 31b, 33a, 33b, 35: bevel gear
30a: 1st bevel gear 30b: 2nd bevel gear
30c: 3rd bevel gear 30d: 4th bevel gear
31a: 5th bevel gear 31b: 6th bevel gear
33a: 7th bevel gear 33b: 8th bevel gear
35: drive shaft bevel gear
40a, 40b, 40c, 40d: worm gear
40a: first worm gear 40b: second worm gear
40c: third worm gear 40d: fourth worm gear
50a, 50b, 50c, 50d: main pinion gear
50a: first main pinion gear 50b: second main pinion gear
50c: third main pinion gear 50d: fourth main pinion gear
50a', 50b', 50c', 50d': additional pinion gear
50a': Part 1 Pinion Gear 50b': Part 2 Pinion Gear
50c': Part 3 Pinion Gear 50d': Part 4 Pinion Gear
60: drive motor 61: motor drive shaft
100: car 200: hoistway

Claims (6)

An elevator having a first rack, a second rack, a third rack and a fourth rack installed at four corners of a hoistway, and having a car moving up and down along the racks,
a driving motor installed in the center of the lower surface of the car;
A first bevel gear rotating shaft and a second bevel gear rotating shaft respectively installed in the +Y direction and the -Y direction of the lower surface of the car with respect to the driving motor and are engaged at one end and rotated by the rotation of the driving motor,
a first worm rotating shaft installed in the -X direction with respect to the other end of the first bevel gear rotating shaft and rotating by coupling the other end and one end of the first bevel gear rotating shaft;
a second worm rotating shaft installed in the +X direction with respect to the other end of the first bevel gear rotating shaft and rotating by coupling the other end and one end of the first bevel gear rotating shaft;
a third worm rotating shaft installed in the -X direction with respect to the other end of the second bevel gear rotating shaft and rotating by coupling the other end and one end of the second bevel gear rotating shaft;
a fourth worm rotating shaft installed in the +X direction with respect to the other end of the second bevel gear rotating shaft, the other end and one end of the second bevel gear rotating shaft being coupled to rotate;
a first main pinion gear installed under the other end of the first worm rotating shaft and operated in engagement with the first rack;
a second main pinion gear installed under the other end of the second worm rotating shaft and engaged with the second rack;
a third main pinion gear installed under the other end of the third worm rotating shaft and engaged with the third rack;
and a fourth main pinion gear installed under the other end of the fourth worm rotating shaft and operated in engagement with the fourth rack.
According to claim 1,
a first worm gear provided at the other end of the first worm rotating shaft;
a second worm gear provided at the other end of the second worm rotating shaft;
a third worm gear provided at the other end of the third worm rotating shaft; and
and a fourth worm gear provided at the other end of the fourth worm rotating shaft, wherein the first worm gear is coupled to the first main pinion gear, the second worm gear is coupled to the second main pinion gear, and the second worm gear is coupled to the second main pinion gear. The third worm gear is coupled to the third main pinion gear, and the fourth worm gear is coupled to the fourth main pinion gear to rotate.
3. The method of claim 2,
The drive motor includes a motor drive shaft, the motor drive shaft includes a drive shaft bevel gear, a fifth bevel gear is provided at one end of the first bevel gear rotary shaft, and a sixth bevel gear is provided at one end of the second bevel gear rotary shaft. Elevator, characterized in that a bevel gear is provided so that the fifth bevel gear and the sixth bevel gear rotate by the rotation of the drive shaft bevel gear.
4. The method of claim 3,
a seventh bevel gear provided at the other end of the first bevel gear rotating shaft;
a first bevel gear provided at one end of the first worm rotating shaft;
a second bevel gear provided at one end of the second worm rotating shaft;
an eighth bevel gear provided at the other end of the second bevel gear rotating shaft;
a third bevel gear provided at one end of the third worm rotating shaft;
and a fourth bevel gear provided at one end of the fourth worm rotation shaft, and meshed with the seventh bevel gear to rotate the first bevel gear and the second bevel gear together, and meshed with the eighth bevel gear to make the Elevator, characterized in that the third bevel gear and the fourth bevel gear rotate together.
5. The method of claim 4,
a first pinion gear rotating shaft installed in the Y direction at the lower part of the car and rotating the first main pinion gear and the third main pinion gear;
The elevator according to claim 1, further comprising a second pinion gear rotating shaft installed in the Y-direction on the lower part of the car and rotating the second main pinion gear and the fourth main pinion gear.
6. The method of claim 5,
The first pinion gear rotation shaft is formed to extend outwardly in both directions, and a first portion pinion gear and a third portion pinion gear are provided at the ends of the portions extending outwardly in each direction, respectively,
The second pinion gear rotation shaft is formed to extend outwardly in both directions, and a second portion pinion gear and a fourth portion pinion gear are provided at the ends of the portions extending outwardly in each direction, respectively,
The first rack is installed such that the first part meshes with the pinion gear instead of meshing with the first main pinion gear,
The second rack is installed such that the second part meshes with the pinion gear instead of meshing with the second main pinion gear,
The third rack is installed such that the third part meshes with the pinion gear instead of meshing with the third main pinion gear,
The fourth rack is installed so that the fourth part meshes with the pinion gear instead of meshing with the fourth main pinion gear.

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