JPH06340389A - Screw rotary elevator - Google Patents

Abstract

PURPOSE:To reduce the extent of mechanical strength necessary for structural materials in use of a cage position regulating frame or the like and to miniaturize an elevator as a whole in addition to being inexpensive in cost. CONSTITUTION:This elevator uses a cage position regulating frame 14 equipped with an L-guide rail 12 at the outside so as to cover four corners along the traveling direction of a box-type cage 10, and a rotator in contact with an inner surface of this corresponding guide rail 12 is set up on a cage surface in and around each of these corners, while an external thread 34 of almost the same length is installed in parallel with the guide rail 12, attaching a short internal thread 36 to be fitted in the external thread 34 tight to the cage 10, and a screw driver 54 rotating the external thread 34 is set up in the underside of this thread 34. In addition, the cage 10 is hung down from one end of a rope rolled on a sheave and a balance weight is hung down from the other end.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator suitable for installation in a wooden house or the like.

[0002]

2. Description of the Related Art Conventionally, a cage (car) for carrying people and luggage
An elevator has been used as an elevating device that vertically moves by utilizing power. There are various types of such elevators, but the one that is currently used is an electric motor type, and a hoisting machine consisting of an electric motor, a brake, a sheave, etc. is installed at the top of the building and Wrap the rope, suspend the cage at one end of the rope, suspend the balance weight at the other end, drive the sheave, and move the cage up and down along the guide rail of the position regulation frame in a slipping manner. There is.

[0003]

However, in a slip elevator, a hoist is installed on the top of a building, and the cage and balance weight are suspended from the hoist by a rope. All must be supported by structural materials such as cage position control frames. Therefore, from the viewpoint of safety, structural members are required to have high mechanical strength, the size cannot be reduced, and the cost for installing an elevator becomes expensive.

The present invention has been made in view of such conventional problems, and provides an inexpensive elevator which has a small mechanical strength required for a structural material such as a cage position restricting frame and is easily miniaturized. The purpose is to

[0005]

In order to achieve the above object, the elevator according to the present invention comprises a guide rail 12 for guiding the movement of the cage 10, and the guide rail 1
2 parallel to the guide rail 12 and a male screw 34 of substantially the same length
, A short female screw 36 fitted to the male screw 34 is fixed to the cage 10, and a screw drive device 54 for rotating the male screw 34 is installed below the male screw 34.

Further, the cage 10 is formed in a box shape, and cage position restricting frames provided with L-shaped guide rails 12 at the outside at a slight distance so as to cover four corners 30 along the moving direction of the box cage 10. 14 is used, and it is preferable to install the rotating bodies 32 that come into contact with the inner surfaces of the corresponding guide rails 12 on the cage surfaces near each corner 30 thereof.
Further, it is preferable to suspend the cage 10 at one end of the rope wound around the sheave and suspend the balance weight at the other end.

[0007]

When the screw drive device 54 is constructed as described above and installed below the male screw 34, the screw drive device 54 can be installed on the ground or the like under the floor. Then, when a rotational force is transmitted from the screw driving device 54 to the lower end of the male screw 34 in the forward direction or the reverse direction, the female screw 36 moves up and down along the male screw 34 as the male screw 34 rotates. Therefore, the cage 10
Can be moved up and down along the guide rail 12.

Further, an L-shaped guide rail 12 is provided outside so as to cover four corners 30 along the moving direction of the box cage 10.
When the cage position restriction frame 14 provided with the cages 10 slightly separated from each other is used, when the cage 10 moves up and down, the four corners 30 of the cage 10 are respectively regulated by the corresponding guide rails 12. Moreover, when the rotating bodies 32 that come into contact with the inner surface of the corresponding guide rails 12 are installed on the cage surfaces near each of the corners 30 respectively, the four corners 30 of the cage 10 and the corresponding guide rails 12 are respectively arranged. The frictional resistance is small due to the interposition of the rotating body 32, and they come into contact with each other. In addition, the cage 1 is attached to one end of the rope wound around the sheave.
When 0 is suspended and the balance weight is suspended at the other end, the weight of the balance weight is balanced with the weight of the cage 10 and the load on the female screw 36 can be reduced.

[0009]

Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a left side view of a part of a cross section mainly showing a screw drive mechanism of a screw rotary elevator to which the present invention is applied, and FIG. 2 is an upper end portion showing a state where a female screw is raised to an upper end portion of the male screw. Left side view of the vicinity, FIG. 3 is XX of FIG.
FIG. 4 is a cross-sectional view and FIG. 4 is an enlarged view within the chain line of FIG. In the figure, 10 is a box-shaped cage, 12 (12a, ... 12d)
Is an L-shaped guide rail for guiding the vertical movement of the cage 10 in the vertical direction, and 14 is a guide rail 12 for these guide rails.
Is a cage position regulating frame in which appropriate positions are connected to each other by a large number of crosspieces 16. This cage 10 has a space 18 for accommodating people and luggage inside, and a door (not shown) on a front wall 20,
Each ceiling 22 is provided with a lid 24 for inspection. The door may be provided on the left side wall 26 or the right side wall 28.

Each of the guide rails 12 is provided at a slight distance to the outside so as to cover the four corners 30 along the moving direction of the cage 10. Then, when the cage 10 moves up and down, the positions of the four corners 30 of the cage 10 can be regulated by the corresponding guide rails 12. And each corner 3
Rotor bodies 32 (32a1, 32a2) that come into contact with the inner surfaces of the corresponding guide rails 12 are respectively installed on the cage surfaces in the vicinity of the upper and lower ends of 0 as shown in FIG. Then, by installing a total of 16 rotating bodies 32, when the cage 10 is moved up and down, the four corners 30 of the cage 10 and the corresponding guide rails 12 have less frictional resistance,
You can contact each other.

Further, 34 is a male screw which is provided in parallel with the guide rail 12 and has substantially the same length as that of the guide rail 12, 36 is a short female screw which fits into the male screw 34, 38 (38a, 3)
8 b) is an L-shaped member for fixing the female screw 36 to the lower portion of the back wall 40 of the cage 10. The male screw 34 is arranged outside the center of the back wall 40 of the cage 10, and its upper and lower ends are supported by bearings 42 (42a, 42b). The lower bearing 42b is received by the base portion 44, and the base portion 44 and the upper bearing 42a are fixed to the cage position regulation frame 14 and the like. In order to fix the female screw 36 to the cage 10,
After a part of each L-shaped member 38 is fixed to the cage 10 by welding, the other part of each L-shaped member 38 is fixed to the female screw 36 by using a bolt 46. Incidentally, a plurality of male screws 34 and the like may be installed by providing them in the vicinity of the left side wall 26 and the right side wall 28.

Reference numeral 48 is a screw drive mechanism installed below the male screw 34, 50 is a gear joint thereof, 52 is a universal joint, and 54 is a screw drive device. This screw drive 5
An AC electric motor 56, a transmission 58, and the like 4 are installed under the floor of a building such as a wooden house. At that time, concrete is poured on the ground, the base plate 60 is fixed on the ground, and the base plate 60 is installed there. In addition, from the electric motor 56 to the transmission 58, a V-belt 66 is stretched between pulleys 62 and 64 provided for them to transmit power.

During operation of the elevator, the door is closed after a person gets on or off or loads are loaded and unloaded, and the electric motor 56 is started to transmit the rotational force in the forward direction to the transmission 58. Then, the rotational force reduced from the transmission 58 is transmitted to the lower end of the male screw 34 via the universal joint 52 and the gear joint 50. Then, the male screw 34 starts to rotate in the positive direction, and the ascending force acts on the female screw 36. Therefore, as the male screw 34 rotates, the female screw 36 and the cage 10 move up together along the male screw 34. At that time, the weight of the cage 10, the person or luggage stored in the cage 10, the female thread 36, etc. is added to the male screw 34. However, since the heavy screw drive device 54 and the like are installed on the ground or the like, the weight is not added. Therefore, the weight of the screw drive device 54 and the like is not added to the cage position regulation frame 14 and the like that supports the male screw 34.

When the cage 10 reaches a required height, for example, the second floor, the electric motor 56 is stopped and the cage 10 is stopped. Then, the door can be opened to allow people to get on and off or load and unload luggage. Further, when the positive rotational force is continuously transmitted to the male screw 34, the female screw 36 reaches the upper end portion of the screw 34 as shown in FIG. 2, and the cage 10 also reaches the height thereof. To lower the cage 10, the electric motor 56 is rotated in the opposite direction. Then, since the rotational force in the opposite direction is transmitted to the lower end of the male screw 34, the descending force acts on the female screw 36. Therefore, as the male screw 34 rotates, the female screw 36 and the cage 10 move downward together. By the way, in the event of a power failure, the battery is switched to an auxiliary power source and converted to AC power by the inverter to drive the motor 5
Activate 6.

In the above-described embodiment, when the cage 10 is moved up and down, the female screw 36, the male screw 34, etc. are attached to the cage 1.
0, since the weight of the person, luggage, etc. stored in the cage 10 is all added, the load of the female screw 36 and the like is large and it is difficult to increase the speed. Therefore, when it is necessary to reduce the load on the female screw 36 or the like and increase the speed, a sheave is further installed on the cage position control frame 14 or the like, a rope is wound around the sheave, and the cage 10 is suspended at one end thereof. , Suspend the balance weight on the other end. Then, the weight of the balance weight can be balanced with the weight of the cage 10 to reduce the load on the female screw 36 and the like.

[0016]

According to the present invention described above, claim 1
Since the screw driving device is installed below the male screw, a heavy screw driving device can be installed on the ground below the floor. Therefore, the weight of the cage, the person or luggage stored in the cage, the female screw, and the like is added to the male screw, and the weight of the screw drive device is not added to the cage position control frame that supports the male screw. Therefore, the mechanical strength required for the structural material such as the cage position regulation frame can be small, the size can be easily reduced, the cost can be reduced, and the installation in a wooden house or the like can be facilitated.

Further, according to claim 2, the four corners of the cage are positionally regulated by the corresponding guide rails, and further, the four corners of the cage and the corresponding guide rails are respectively installed on the cage surface near each corner. Since the frictional resistance is low depending on the body and they contact each other, the cage can be smoothly moved up and down smoothly without producing a sound. Also, claim 3
Since the weight of the balance weight hung on one end of the rope wound around the sheave can be balanced with the weight of the cage hung on the other end, the load burden on the female screw etc. is small and speed can be increased. become.

[Brief description of drawings]

FIG. 1 is a left side view of a part mainly showing a screw drive mechanism of a screw rotary elevator to which the present invention is applied.

FIG. 2 is a left side view near the upper end showing a state where the female screw is raised to the upper end of the male screw.

3 is a sectional view taken along line XX of FIG.

FIG. 4 is an enlarged view within the one-dot chain line circle of FIG.

[Explanation of symbols]

10 ... Cage 12 ... Guide rail 14 ... Cage position regulation frame 18 ... Storage space 20, 40 ... Positive, back wall 2
6, 28 ... Left and right side walls 30 ... Corner 32 ... Rotating body 3
4 ... Male thread 36 ... Female thread 38 ... L-shaped member 42 ... Bearing 44 ... Stand part 46 ... Bolt 48 ... Screw drive mechanism 50 ... Gear joint
52 ... Universal joint 54 ... Screw drive device 56 ... Electric motor 58 ... Transmission 6
0 ... Base plate 66 ... V belt

Claims (3)

[Claims] 1. A guide rail for guiding movement of a cage is provided, a male screw having substantially the same length as the guide rail is arranged in parallel with the guide rail, and a short female screw fitted to the male screw is fixed to the cage. A screw rotation type elevator characterized in that a screw drive device for rotating the male screw is installed below the male screw. 2. A cage position regulating frame, which is provided with an L-shaped guide rail slightly apart from each other outside so as to cover four corners along the moving direction of the box cage, The screw rotary elevator according to claim 1, wherein a rotating body that comes into contact with the inner surface of the corresponding guide rail is installed on each cage surface near each corner such as. 3. The screw rotary elevator according to claim 1, wherein the cage is hung at one end of the rope wound around the sheave and the balance weight is hung at the other end.