JPH05162992A - X-shaped elevator device equipped with load conversion elevation driving mechanism - Google Patents

Abstract

PURPOSE:To lighten the load in the initial stage of rise by changing the direction of a paret of the load in the horizontal direction to the vertical direction, when a pallet P is raised from the bottom part. CONSTITUTION:As for an X-shaped elevator device in which a pallet P is placed at the upper part and the pallet P is raised and lowered by changing the cross angle of a crossing part 1, an elevator driving part 3 is provided at the front edge part of the pallet P. As for the driving part 3, a horizontal turning screw shaft 13 which has a prescribed length and is driven by a motor 15 is laid on a supporting frame 11, and a slider 4 is screwed with the horizontal turning screw shaft 13, and a load exchange guide plate 7 equipped with a horizontal shaped conversion guide hole 5 and a curved shaped conversion guide hole 6 which are arranged is integrally installed on the slider 4. Two guide rollers 8 and 9 which are freely fitted into the horizontal shaped conversion guide hole 5 and the curved shaped conversion guide hole 6 are fitted at the top edge part of an X shaped frame 2a directing toward the driving part 3, and these guide rollers 8 and 9 are freely fitted into the guide holes 5 and 6.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an X-type lifting device used in a two-stage multi-storey car park or the like.

[0002]

2. Description of the Related Art In order to lift and lower heavy objects such as automobiles, X
When using the mold lifting device, the lifting drive means becomes a problem. The mechanical condition is that when a heavy load of 1 to 2 tons is lifted, such as a car, the load is extremely large especially in the initial stage, and in this case, the load is concentrated at the drive support point (joint). This is because it must be cleared. In order to solve this difficulty, attempts have been made to make it practical by strengthening the propelling ability of motors and the like and the constituent members. However, such an attempt to enhance the capability of raising and lowering the drive results in an increase in the weight of the driving portion and requires a large space for accommodating this device, which hinders the compactification of the entire device. For this reason, conventional X-type lift parking lots have been shunned in general private houses and have not spread.

[0003]

DISCLOSURE OF THE INVENTION The present invention focuses on the fact that in this type of X-shaped lifting device, the X-shaped frame can be lifted and lowered with a small pulling force as it goes to the upper part, and it is heavily loaded at the bottom. The X-type equipped with a lifting drive mechanism that reduces the initial horizontal load by converting it to the vertical direction and enables efficient and safe lifting operation even with a drive unit with a relatively small capacity. An elevating device is provided.

[0004]

In order to solve the above problems, the present invention places a pallet P on top of an X-shaped frame 2 pivotally supporting the intersection 1 and crosses the intersection 1. In the X-type lifting device that lifts and lowers the pallet P by changing the angle, the lifting drive unit 3 is provided at the front end portion of the pallet P. The drive unit 3 is attached to the support frame 11 by a motor-1.
The horizontal rotary screw shaft 13 of a predetermined length driven by 5 is installed,
A slider-4 is screwed onto the horizontal rotary screw shaft 13, and a load conversion guide plate 7 having a horizontal conversion guide hole 5 and a curved conversion guide hole 6 is integrally attached to the slider-4. Configure. X-type frame 2 facing this drive unit 3
Two guide rollers 8 and 9 which are loosely fitted in the horizontal conversion guide hole 5 and the curved conversion guide hole 6 are attached to the tip of a, and these guide rollers 8 and 9 are attached to the guide holes 5 respectively. , 6 loosely fit. Then, a part of the initial horizontal load applied when the pallet P is lifted from the bottom is converted to the vertical direction.

Further, the pallet P is inclined so that it becomes inclined as it is raised from the horizontal bottom position.
The lengths between the fulcrums of the mold frames 2a and 2b are made different.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to the drawings showing an embodiment of the present invention, FIG.
As shown in FIG. 3, an X-shaped frame in which the intersection 1 is pivotally supported.
In an X-type lifting device that lifts the pallet P by placing a pallet P on the upper portion of the pallet 2 and changing the intersecting angle of the intersecting portion 1, a lifting drive unit 3 is provided in front of a side portion of the pallet P. Become. The drive unit 3 includes a support frame 11
A horizontal rotating screw shaft 1 of a predetermined length driven by the motor 15
3, a slider 4 is screwed onto a horizontal rotary screw shaft 13, and a load conversion guide plate 7 in which a horizontal conversion guide hole 5 and a curved conversion guide hole 6 are arranged in the slider-4. Attached integrally. This load conversion guide plate 7
There are two types of guide holes provided in the horizontal conversion guide hole 5 and the curved conversion guide hole 6, and the positional relationship between them is as shown in FIGS. 4 and 5. On the other hand, the curved conversion guide hole 6 may be arranged at any position before and after 180 degrees.

FIG. 4 shows the curved conversion guide hole 6 in the rear position.
1 and 3 show a state in which the pallet P is located at the uppermost portion, and FIG. 2 shows a state in which the pallet P is descending at the bottom portion. Since the fixed pivot portion 18 is pivotally fixed to the rear end portion of the moving roller guide 20, if the crossing angle of the crossing portion 1 is changed, the front moving roller 19 will have a U-shaped cross section. It moves back and forth in the moving roller guide 20. The upper and lower guide frames 10a, 1 inside the support frame 11 outside the lifting drive unit 3 provided on the front side of the pallet P.
0b is provided in parallel with the front-rear direction, and a slider-4 is horizontally movable in the support frame 11 along the guide frames 10a and 10b.

The female screw portion 12 is fixed to the slider-4,
A horizontal rotary screw shaft 13 is screwed into the female screw portion 12. The horizontal rotary screw shaft 13 is connected to a motor 15 via a worm speed reducer 14. Then, in order to stabilize the position of the horizontal rotary screw shaft 13, the pivotal support portion 16 of the horizontal rotary screw shaft 13 is fixed to the outer support frame 11. That is, the horizontal rotary screw shaft 13 is rotated by the rotation of the motor 15, and the horizontal rotary screw shaft 13 is rotated.
Since the female screw portion 12 of the slider-4 is fixed to the slider 4, the slider-4 moves horizontally in the support frame 11 along the guide frames 10a and 10b. Further, the load conversion guide plate 7 is integrally fixed to the slider-4. The load conversion guide plate 7 is provided with a horizontal conversion guide hole 5 in the front and a curved conversion guide hole 6 in the rear. Two guide rollers 8 and 9 which are loosely fitted in the horizontal conversion guide hole 5 and the curved conversion guide hole 6 are attached to the tip of the X-shaped frame 2a facing the driving unit 3. Then, these guide rollers 8 and 9 are loosely fitted in the respective guide holes 5 and 6.

The pallet P moves up the positional relationship between the guide rollers 8 and 9 at each stage in the horizontal conversion guide hole 5 and the curved conversion guide hole 6 (load conversion guide plate).
7 is pulled to the rear pivot part 17), and (a), (b), (c) of FIG. 4, FIG. 6 and FIG.
The order is shown in (d). FIG. 4A, FIG. 6A
8 (a) at the bottom, FIG. 4 (b), FIG. 6 (b) and (c) and FIG. 8 (b) at an intermediate part, and FIG. 4 (c) and FIG. (D) and (c) of FIG. 8 are the states when the pallet P is located at the top.

First, in FIG. 6A, the frame 2
The two guide rollers 8 and 9 in the upper part of a are in a state in which they are almost horizontal. At this time, the guide roller 8 is at the rear end of the horizontal conversion guide hole 5 and the guide roller 9 is in a curved shape. It is located at the rear end of the conversion guide hole 6. In this case, the weight load is applied near the rear end side A of the horizontal conversion guide hole 5 and near the rear end side a of the curved conversion guide hole 6. From this position, the slider 4 is moved horizontally along the guide frames 10a and 10b in the support frame 11 to the rear, that is, the guide roller.
8 and the distance between the pivot portion 17 of the X-shaped frame 2b is shortened,
X in the horizontal conversion guide hole 5 and the curved conversion guide hole 6
Two guide rollers 8 and 9 of the mold frame 2a are pressed forward to the upper sides 5a and 6a of both guide holes (see FIG. 6, B,
Move from b to C, c). At this time, the moving distance in the horizontal direction is large, but the upper side 6 of the curved conversion guide hole 6 is
Since the inclination of “a” is gentle, it moves quickly with a small tensile force.

Now, the operation state will be described step by step. When the frame 2a is in the state of FIG. 8A (when the pallet P is located at the bottom), that is, in the initial stage of the ascent, the horizontal direction X1 is set. When the tension of is applied, this X1 and the vertical direction Y1
A resultant force of Z1 having a component force is generated, and the load in the vertical direction Y1 can be supported. On the other hand, assuming that the load conversion guide plate 7 is not used, when tension in the horizontal direction X4 is applied, as shown in (c) of FIG. Z4 with force as component
Therefore, a large load in the vertical direction Y4 must be supported. In other words, with the same tension (X1 = X4),
The vertical load bearing force of the present invention is increased by Y1 / X1. Next, when it rises considerably,
As shown in (b) of (2), when a tension of X2 is applied in the horizontal direction, the load in the vertical direction Y2 can be supported, and the vertical direction Y2 is relatively opposed to the horizontal direction X2 when the pallet P is located at the bottom. It becomes smaller, and the load bearing capacity required to rise that much is reduced. Therefore, in the portion where the load in the vertical direction with respect to the horizontal direction is large (from the position A to the position D in FIG. 6), the upper side 6a of the curved conversion guide hole 6 is formed.
The inclination of the upper side 6a is increased at a position (a position from D to E in FIG. 6) which is considerably elevated. When the position of the pallet P reaches the uppermost position, the guide rollers 8 and 9 stop at the extreme E and e positions in front of the guide holes 5 and 6, as shown in FIG. To do.

Further, as shown in FIG. 1, the pallet P is
When the pallet P is displaced from the bottom position to the ascending limit position
The length from the intersection 1 of the X-shaped frame 2a facing the drive unit 3 to the guide roller 8 is set slightly longer than the length of the symmetrical X-shaped frame 2b so that it is slightly upward.

[0013]

The present invention has the above-described structure. When the slider 4 is horizontally moved from the front to the rear in the support frame 11 by the rotation of the motor, the horizontal conversion guide hole 5 and the curved conversion guide hole 6 are formed. Along the two X-shaped frame 2a guide rollers
The rollers 8 and 9 move to the front position (positions B, b to C and c in FIG. 6) along the upper sides 5a and 6a of the guide holes 5 and 6. At this time, in the initial stage of ascent, the curved conversion guide hole 6
Since the inclination of the upper side 6a is gentle, the moving distance becomes large, but the moving force becomes large with a small pulling force, and a part of the load in the horizontal direction is converted to the vertical direction. Reduce. It should be noted that the same operation as described above is achieved in the state of FIG. 5 in which the horizontal conversion guide hole 5 and the curved conversion guide hole 6 are arranged 180 degrees opposite to each other.

[0014]

Since the present invention is constructed as described above, when the guide rollers 8 and 9 are loosely fitted in the guide holes 5 and 6 and the pallet P is lifted from the bottom, a horizontal load is applied. It is possible to reduce the load in the initial stage of the ascending by changing to the vertical direction. Therefore, even if the drive device has a relatively small capacity, it can be moved up and down, and the space occupied thereby can be reduced. Also, front and rear X-type frames 2
By changing the lengths of a and 2b and bidding up the front of the pallet P as it rises to make it in an inclined state, it is possible to prevent the placed object from falling forward, and to lock with the horizontal rotary screw shaft 13. Together, they improve safety. The above-described present invention overcomes the drawbacks of the X-type lifting device for the first time, and thus is useful for popularizing various X-type lifting devices including a two-level multi-storey parking lot.

[Brief description of drawings]

FIG. 1 is a side view of the present invention when a pallet is raised.

FIG. 2 is a side view of the present invention when descending a pallet.

FIG. 3 is a perspective view of the present invention.

FIG. 4 is a side view showing the operation stage of the present invention, in which (a) is the pallet at the bottom, (b) is the pallet in the middle, and (c) is the pallet at the top.

FIG. 5 is a side view of the same in another physical condition according to the present invention.

FIG. 6 is a schematic side view showing a positional relationship between a guide hole and a guide roller of a load conversion guide plate which is an essential part of the present invention.

FIG. 7 is a mechanical schematic side view of each operation stage of the conventional device.

FIG. 8 is a mechanical dynamic side view corresponding to a positional relationship between a curved conversion guide hole of a load conversion guide plate and a guide roller, which is an essential part of the present invention.

[Explanation of sign]

 P Pallet P1 Pallet front part P2 Pallet rear part 1 Intersection 2 X-type frame 2a X-type frame 2b X-type frame 3 Lifting drive part 4 Slider-5 Horizontal conversion guide hole 5a Horizontal conversion guide Upper side of hole 6 Curved conversion guide hole 6a Upper side of curved conversion guide hole 7 Load conversion guide plate 8 Guide roller 9 Guide roller 10a Guide frame 10b Guide frame 11 Support frame 12 Female screw portion 13 Horizontal rotation screw shaft 14 Worm reducer 15 Motor 16 Horizontal rotation screw shaft pivot support 17 Pivot support 18 Fixed pivot support 19 Moving roller 20 Moving roller guide

Claims (2)

[Claims] 1. A pallet P is placed on top of an X-shaped frame (2) pivotally supporting the intersection (1), and the intersection (1) is placed there.
In an X-shaped lifting device for lifting and lowering the pallet P by changing the intersection angle of the pallets P, a lifting drive unit (3) is provided at the front end portion of the pallet P, and the drive unit (3) is mounted on the support frame (11). -A horizontal rotation screw shaft (13) of a predetermined length driven by the motor (15) is installed, a slider (4) is screwed onto the horizontal rotation screw shaft (13), and the slider (4) is A load conversion guide plate (7) having a horizontal conversion guide hole (5) and a curved conversion guide hole (6) is integrally attached thereto, and the X shape facing the drive part (3). Two guide rollers (8) and (9) which are loosely fitted in the horizontal conversion guide hole (5) and the curved conversion guide hole (6) are attached to the tip of the frame (2a). The guide rollers (8), (9) are connected to the guide holes (5),
(6) is loosely fitted, and part of the initial horizontal load generated when the pallet P is lifted from the bottom is converted to the vertical direction. lift device. 2. An X-shaped frame so that the pallet P is inclined as it is lifted from a horizontal bottom position.
The X-type lifting device having a load conversion lifting drive mechanism according to claim 1, wherein the lengths between the fulcrums of the frames (2a), (2b) are unequal.