JP3970218B2 - lift device - Google Patents

Description

The present invention relates to an elevating apparatus suitable mainly for use as a home elevator that elevates and lowers an unloading body by a rotor that rotates up and down on a shaft fixed upright.

A conventional lifting / lowering body having a fixed shaft having an outer spiral portion fixed upright so as not to rotate and a rotor having an inner spiral portion screwed into the outer spiral portion of the fixed shaft. And an unloading body such as a box supported by the elevating body and moving up and down integrally with the elevating body, and drive means fixed directly to the upper portion of the unloading body for rotating the rotor An elevating device is disclosed.

Therefore, there is a drawback that the vibration accompanying the operation of the driving means vibrates the lifting box.
In addition, since the fixed shaft with a helical body is long, a phenomenon of bending distortion that is distorted when a load is applied to the rotor, and twisting distortion that is distorted by twisting when the rotational resistance due to the load is increased, particularly a plurality of rotors, In the configuration in which the ascending / descending operation is performed in synchronism, there is a drawback in that there is a risk of hindering the driving rotation of the rotor.
Also, the assembly of the device must be strict, and if the drive device and the lifting body are integrated with the box, the assembly adjustment at the site is complicated. In particular, a plurality of fixed shafts and a pair of rotors screwed to the fixed shaft There is a disadvantage that it is particularly difficult in the apparatus having the above.
Shokai 56-29076 Akira 62-36286 JP 06-329360 A

The present invention has been made in view of the above-described drawbacks of the prior art, and an object of the present invention is to provide a lifting device that does not vibrate a lifting / lowering lifting body such as a lifting box.
Another object of the present invention is to provide an elevating device that can stably drive and rotate a rotor.
Another object of the present invention is to provide a lifting device that can be easily assembled on site.

The above and other objects and novel features of the present invention will become more fully apparent when the following description is read in conjunction with the accompanying drawings.
However, the drawings are for explanation only and do not limit the technical scope of the present invention.

In order to achieve the above object, the present invention provides a frame and an outer spiral portion such as a spiral groove or a spiral projection, such as a ball of a male screw or a ball screw, which is erected and fixed to the frame so as not to rotate. A first fixed shaft having the same structure as the first fixed shaft, a second fixed shaft provided at an appropriate interval from the first fixed shaft, and the first fixed shaft. A first elevating body having a rotor having an inner spiral part screwed into the outer spiral part and a rotor having an inner spiral part screwed into the outer spiral part of the second fixed shaft; A second lifting body provided therein, a lifting body connecting beam formed by firmly connecting the first lifting body and the second lifting body, a rotor of the first lifting body, and the second Directly on the first lifting body and the second lifting body for rotating the rotor of the lifting body Or a driving means fixedly or indirectly, and a suspension means such as a wire or a chain lowered so as to be directly or indirectly supported by the first lifting body and the second lifting body. And a load support body such as a box that is held in a suspended state directly or indirectly by the suspension means, and a slide support on the first fixed shaft provided above or below the first elevator body A first shaft support body, a second shaft support body slidably supported by the second fixed shaft provided above or below the second lift body, and supported by the lift body connecting beam The first and second shaft support bodies and the second shaft support body fixedly connected to each other at a predetermined interval constitute an elevating device.

As is clear from the above description, the present invention has the following effects.

The first lifting shaft and the second lifting body are supported by the fixed shaft together with the first and second lifting bodies and are moved up and down, and the pitch between the first fixed shaft and the second fixed shaft Since the first shaft support and the second shaft support are fixed to each other at a predetermined reference interval, the fixed shaft pitch is always kept close to the rotor even when a high load is applied to the fixed shaft. It is possible to obtain an effect that the rotor is smoothly rotated by being held at a predetermined interval.

Hereinafter, the present invention will be described in detail by the best mode for carrying out the invention shown in the drawings.

In the first preferred embodiment for carrying out the present invention shown in FIGS. 1 to 6, reference numeral 1 denotes an elevating device. The elevating device 1 does not rotate to the frame 2 and the frame 2. A first fixed shaft 4 having an outer spiral portion 3 which is a shaft that forms a ball screw / spline, which is erected and fixed in a suspended state, and an appropriate space between the first fixed shaft 4 and the same configuration as the first fixed shaft 4. A second fixed shaft 5 provided in the first position and a rotor 6 formed of a nut having an inner spiral portion having a rolling ball group screwed into the outer spiral portion 3 of the first fixed shaft 4. 1 lifting body 7, a second lifting body 8 having a rotor 6 screwed into the outer spiral portion 3 of the second fixed shaft 5, a first lifting body 7 and a second lifting body 8. , A lifting body connecting beam 9, a rotor 6 of the first lifting body 7, and a second lifting body 8. A drive means 10 fixed to the lifting / lowering body connecting beam 9 for rotating the rotor 6, and a suspension made of wires supported and lowered in four directions in a form indirectly attached to the lifting / lowering body connecting beam 9 to the lifting / lowering body. It is comprised from the means 11a, 11b, 11c, 11d, and the unloading body 12 which consists of a box which the person hold | maintained in the suspended state on these suspension means 11a-11d carries and raises / lowers.

In the elevator 7, the rotor 6 is provided with a toothed pulley 13 on the outside, and is connected to and driven by a toothed pulley 14 a provided in the driving means 10 and a toothed endless belt 15 a. The belt 15a is tensioned by the tension 16a.
Similarly, the elevating body 8 is connected and driven by a toothed pulley 14b and a toothed endless belt 15b, and the toothed endless belt 15b is tensioned by a tension 16b.
The elevating body 8 is slidably supported so as to slide about 5 mm to the left and right from the reference center of the second fixed shaft 5, and the second fixed shaft 5 is distorted and bent, and the first fixed shaft is distorted and bent. It slides corresponding to the load applied to the rotor and functions so that an excessive load is not applied to the rotors 6 and 6.

A first shaft support body 17 that is slidably supported by the first fixed shaft 4 is provided above and close to the first lift body 8, and a second slide shaft is supported by the second fixed shaft above the second lift body. Two shaft support bodies 18 are provided, and the first shaft support body 17 and the second shaft support body 18 have a predetermined distance that is a predetermined distance between the reference center of the first fixed shaft 4 and the reference center of the second fixed shaft 5. A shaft support connecting beam 19 fixedly connected to the interval is provided on the lift connecting beam 9 so as to be supported by connecting bolts 20a and 20b.
The first fixed shaft 4 and the second fixed shaft 5 are connected to the first fixed shaft 4 and the second fixed shaft 5 by making the shaft support connecting beam 19 easy to move laterally by supporting the lifting / lowering body connecting beam 9 with connecting bolts 20a and 20b. While the shaft support body 17 and the second shaft support body 18 are held at a predetermined interval, the first lifting body 7 and the second shaft support body 7 are moved in the lateral movement of the first shaft support body 17 and the second shaft support body 18. The elevating body 8 functions so as not to synchronize. Thereby, it is possible to prevent an unnatural and unreasonable load from being applied to the rotors of the first lifting body 7 and the second lifting body 8 by the lateral movement of the first shaft support body 17 and the second shaft support body 18. It has become.

The unloading body 12 includes a ceiling frame 21, a bottom frame 22, hollow columns 23 a, 23 b, 23 c, 23 d erected at the four corners of the ceiling frame 21 and the bottom frame 22, and hollow columns 23 a, 23 b from each corner of the bottom frame 22. , 23c, 23d, and suspension means 11a, 11b, 11c, 11d that suspend the unloading body 12, a panel 24 that forms a left wall, a right wall, a back wall, a top wall, and a bottom wall, and a door Lifting support having a front door (not shown) guided by the rail 25 and opened and closed by sliding movement, and a guide roller provided on the outer side of the unloader 12 so as to protrude laterally from the ceiling and bottom. The lifting body guide rails 26a to 26h come into contact with the unloading body guide rails 27a to 27d provided upright on the outside of the unloading body 12, and the unloading body 12 absorbs vibrations. You can move up and down while maintaining vertical There.
The ceiling frame 21 is provided with suspension means guide rollers 28a to 28d, and the suspension means 11a to 11d are set straight at predetermined positions.
The upper and lower portions of the suspending means 11a to 11d are held by a rubber elastic vibration-proof member 29 so as to absorb vibration.
There may be two unloading body guide rails on the left and right sides. In this case, in order to prevent the unloading body from touching afterwards, the lifting body guide rail is supported so that the cross section of the lifting body rail is sandwiched between the front and rear rollers. Spline shafts and spline bearings may be used.

The first fixed shaft 4 and the second fixed shaft 5 are fixed by a bolt 30 so as not to rotate on the upper part of the frame body 2, and the lower part absorbs vibration such as vibration-proof rubber suspended by the lower support part 31. The body 32 is held at a predetermined position, and the upper part is also held by the vibration absorber 32 so as to absorb the vibration and force to distort the fixed shaft to suppress the distortion.

(Additional remark 1) The 1st fixed shaft which has an outer spiral part, such as a spiral groove and a spiral protrusion, etc. where the ball and the ball of a male screw or a ball screw roll up so that it may stand and be fixed to this frame so that it may not rotate. A first fixed shaft having the same configuration as the first fixed shaft, a second fixed shaft provided at an appropriate interval, and screwing into the outer spiral portion of the first fixed shaft, etc. A first elevating body having a rotor having an inner spiral portion, and a rotor having an inner spiral portion that is screwed into the outer spiral portion of the second fixed shaft, and a fixed shuff. A second elevating body configured to slide in response to strain, the elevating body connecting beam formed by firmly coupling the first elevating body and the second elevating body, and the first elevating body. A first rotor for rotating the rotor of the body and the rotor of the second lifting body; A driving means fixed directly or indirectly to the lifting body and the second lifting body, and to be supported directly or indirectly by the first lifting body and the second lifting body. A lifting device characterized by comprising an unloading body such as a box lowered.
(Supplementary Note 2) A first fixed shaft having a frame and an outer spiral portion such as a spiral groove or a spiral projection, such as a ball of a male screw or a ball screw, which is erected and fixed to the frame so as not to rotate. A first fixed shaft having the same configuration as the first fixed shaft, a second fixed shaft provided at an appropriate interval, and screwing into the outer spiral portion of the first fixed shaft, etc. A first elevating body having a rotor having an inner spiral portion, and a second elevating body having a rotor having an inner spiral portion that is screwed into the outer spiral portion of the second fixed shaft. A body, a lifting body connecting beam formed by firmly connecting the first lifting body and the second lifting body, and a first fixed shaft that is slidably supported above or below the first lifting body. 1 shaft support and a second fixed shaft above or below the second lifting body A second shaft support that is slidably supported, and a shaft support connection beam supported by the elevating body connection beam for fixedly connecting the first shaft support and the second shaft support at a predetermined interval; , Directly or indirectly fixed to the first lifting body and the second lifting body for rotating the rotor of the first lifting body and the rotor of the second lifting body. And a lifting device such as a box lowered so as to be directly or indirectly supported by the first lifting body and the second lifting body.
(Supplementary note 3) The lifting device according to supplementary note 2, wherein the support of the shaft support connection beam to the lift connection beam is configured to move independently according to the load.
(Supplementary Note 4) A lifting device comprising the configuration of Supplementary Note 2 and the configuration of Supplementary Note 3.

(Different modes for carrying out the invention)

Next, different modes for carrying out the present invention shown in FIGS. 7 to 12 will be described. In the description of the different modes for carrying out the present invention, the same components as those in the best mode for carrying out the present invention are denoted by the same reference numerals, and redundant description is omitted.

In the second embodiment for carrying out the present invention shown in FIG. 7, the main difference from the first embodiment for carrying out the present invention is that the drive means is automatically electromagnetic when the power is turned off. The drive means 37 has a function that the toothed pulleys 14a and 14b are in a free state when the clutch, the electromagnetic gear, etc. are disconnected, and is free in the power-on state connected to the toothed pulleys 14a and 14b on the ceiling of the unloading body 12. In the power-off state, an automatic clutch or the like 38 is provided, which is connected to a manual handle 39. When the power is turned off, the automatic clutch or the like 38 is automatically connected and the manual handle 39 is attached. By manually rotating from inside the unloading body 12, the rotors 6, 6 are rotated so that the unloading body 12 can be lowered to escape from the lower floor, and the shaft support connecting beam 19 is firmly attached to the lifting body connecting beam 9. Connected to Lower means 11a, 11b, 11c, 11d and lies in the formation of the lifting device 40 which is adapted suspended from the shaft 支体 connecting beams 19. 41 is a tension adjusting means.
The manual handle may not be provided with the automatic clutch or the like 38, and may be manually pushed up and connected to the toothed pulleys 14a and 14b when the power is turned off.
The drive means is provided with a clutch or the like that frees the toothed pulley of the drive means, and a manual handle for rotating the toothed pulley in the free state is provided inside the unloading body. The lifting device according to any one of claims 1 to 6.

The third embodiment for carrying out the present invention shown in FIG. 8 is mainly different from the best first embodiment for carrying out the present invention in that a third shaft is located below the elevating bodies 7 and 8. A support body 44 and a fourth shaft support body 45 are provided, and the third shaft support body 44 and the fourth shaft support body 45 are firmly connected to each other by a shaft support body connecting beam 46 at a predetermined interval. The shaft support body 17 and the third shaft support body 44 are connected by the vertical connection part 47, and the second shaft support body 18 and the fourth shaft support body 45 are connected by the vertical connection part 48, thereby balancing the entire lifting mechanism. The lifting and lowering device 51 is formed in a balanced suspension state with the wires 50 and 50 having the weight 49. 52 is a wire guide roller.
It is good also as a structure which does not provide the up-and-down connection part 47 and 48, and the raising / lowering body connection beam 9 and the shaft support body connection beam 46 were hung with the volt | bolt.
The balance weight is heavier than the weight of the entire lifting mechanism. For example, in the case of a four-seater, the weight of the lifting mechanism is about +100 kg to 250 kg.

The fourth embodiment for carrying out the present invention shown in FIGS. 9 to 11 is mainly different from the best first embodiment for carrying out the present invention in that the unloading body 55 is a box body and the rotor is used. An elevating body 56, which is a nut, is provided above the back of the frame body 2 so as to move up and down on a fixed shaft 57 made of a screw rod having a length of about one third of the frame body 2. The small-diameter drums 58a and 58b and the large-diameter drums 59a and 59b that rotate integrally with the small-diameter drums 58a and 58b are rotatably provided in the middle, and the wires 60a, 60b, 60c, and 60d wound around the large-diameter drums 59a and 59b are unloaded. The body 55 is lifted and supported, and the wires 61a, 61b, 61c and 61d wound around the small-diameter drums 58a and 58b form a lifting device 63 which is connected to a lifting bar 62 which moves up and down integrally with the lifting body 56. To the point . 64 is a guide pulley.
Support guide portions 65 a and 65 b having a plurality of rollers are provided on both sides of the elevating bar 62, and are supported and guided by the columns of the frame 2.
The unloading body 55 is indirectly suspended from the lifting body 56 by a wire.
In this configuration, it is possible to easily rotate the fixed shaft and use the rotor as a non-rotor, move the lifting bar up and down with a hydraulic arm, and move the lifting bar up and down with a rotating arm.
The relationship between the drum and the wire may be replaced with a sprocket and a chain. In this case, the back side of the chain is preferably hung with a weight.
Although four suspension wires are provided, it is preferable that the four wires are not cut at the same time and the operation is stopped even if one wire is cut. A combination of a small-diameter sprocket and a large-diameter drum may also be used.

The fifth embodiment for carrying out the present invention shown in FIG. 12 is mainly different from the best first embodiment for carrying out the present invention in that the lift drive mechanism having the structure of the lift device 63 is the first. Elevating body 7, second elevating body 8, elevating body connecting beam 9, first shaft support body 17, second shaft support body 18, shaft support body connecting beam 19, first fixed shaft 4, second The elevating device 69 is formed as an elevating drive mechanism 68 composed of the fixed shaft 5.

The present invention is used in industries that manufacture lifting devices such as elevators.

1 is a front view of the best first embodiment for carrying out the present invention. The front view of the state which raised the unloading body of FIG. 1 is a plan view of the best first embodiment for carrying out the present invention. FIG. 2 is an enlarged view of a lifting mechanism unit according to the first embodiment for carrying out the present invention. The fixed shaft support structure figure of the 1st embodiment of the best for carrying out the present invention. BRIEF DESCRIPTION OF THE DRAWINGS FIG. The front view of the elevator back part of the 2nd form for implementing this invention. The front view of the elevator rear part of the 3rd form for implementing this invention. The side view of the 4th form for carrying out the present invention. The side view of the state which raised the unloading body of FIG. The front view of the 4th form for carrying out the present invention. The front view of the 5th form for carrying out the present invention.

Explanation of symbols

1: lifting device, 2: frame,
3: outer spiral part 4: first fixed shaft,
5: Second fixed shaft, 6: Rotor,
7: 1st lifting body, 8: 2nd lifting body,
9: Lifting body connecting beam, 10: Driving means,
11a-11d: Hanging means, 12: Unloading body,
13: Toothed pulley, 14a, 14b: Toothed pulley,
15a, 15b: Toothed endless belt, 16a, 16b: Tension,
17: 1st axial support body, 18: 2nd axial support body,
19: Shaft support connecting beam, 20a, 20b: connecting bolt,
21: Ceiling frame, 22: Bottom frame,
23a-23d: Hollow struts 24: Panels
25: Door rail, 26a-26h: Lifting support guide part,
27a-27d: Unloading body guide rails, 28a-28d: Suspension means guide rollers,
29: Elastic vibration-proof member, 30: Bolt,
31: Lower support part, 32: Vibration absorber,
33: Upper fixing part, 37: Driving means,
38: Automatic clutch etc. 39: Manual handle,
40: lifting device, 41: tension adjusting means,
44: third shaft support, 45: fourth shaft support,
46: shaft support connecting beam, 47: vertical connection,
48: vertical connection, 49: balance weight,
50: Wire, 51: Lifting device,
52: Wire guide roller, 55: Unloading body,
56: Lifting body, 57: Fixed shaft,
58a, 58b: small diameter drum, 59a, 59b: large diameter drum,
60a-60d: wire, 61a-61d: wire,
62: Lift bar 63: Lift device
64: Guide pulley, 65a, 65b: Support guide part,
68: Lifting drive mechanism, 69: Lifting device.

Claims (1)

A first fixed shaft having an outer spiral portion such as a spiral groove and a spiral protrusion, such as a ball and a ball screw, which is erected and fixed to the frame so as not to rotate; A first fixed shaft having the same configuration as that of the first fixed shaft, a second fixed shaft provided at an appropriate interval, and an inner spiral portion that is screwed into the outer spiral portion of the first fixed shaft. A first elevating body having a rotor having an inner portion, a second elevating body having a rotor having an inner spiral portion that is screwed into the outer spiral portion of the second fixed shaft, and the like A lifting / lowering body connecting beam formed by firmly connecting the first lifting / lowering body and the second lifting / lowering body, and a rotor for rotating the first lifting body and a rotor for the second lifting body; It is fixed directly or indirectly to the first lifting body and the second lifting body. Moving means, suspension means such as a wire and a chain lowered so as to be directly or indirectly supported by the first lifting body and the second lifting body, and directly to the suspension means Or an unloading body such as a box that is indirectly suspended,
A first shaft支体being slid supported by the first upper or front Symbol first fixed shaft provided below the lifting body, the first provided above or below said second lift A second shaft support that is slidably supported by two fixed shafts, and the first shaft support and the second shaft support that are provided so as to be supported by the elevating body connecting beam. lifting apparatus characterized by comprising a shaft支体connecting beam fixedly connected to.

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