JPH067173Y2 - lift device - Google Patents

Description

[Detailed description of the device] (a) Industrial field of application The present invention is suitable for use in prefabricated construction of houses.
It relates to a lifting device for constructing the roof-> the second floor-> the first floor by the jack-up method.

(B) Conventional Technology As a lifting device that has been already proposed, a structure shown in FIG. 3 is known.

That is, the lifting device shown in FIG. 3 includes a pair of left and right guide posts 1 and 2 having a plurality of engaging holes 1a and 2a provided at regular intervals in the vertical direction, and a guide post 1 and 2 arranged between the guide posts 1 and 2. The lifting / lowering post 3 is provided, and the auxiliary lifting / lowering post 4 is disposed below the lifting / lowering post 3.

Further, the elevating post 3 has a double-rod stopper cylinder 5, and the rod 5 of the stopper cylinder 5
The stopper pin 6 fixed to the tip of a can be engaged with and disengaged from the engaging holes 1a and 2a of the guide posts 1 and 2.

Further, the cylinder portion 7a of the jack cylinder 7 is fixed to the lower end portion of the lifting / lowering post 3, and the tip of the rod portion 7b of the jack cylinder 7 has the auxiliary lifting / lowering post 4 described above.
It is fixed to.

Further, the auxiliary lift post 4 is also provided with a double rod type stopper cylinder 8, and the stopper pin 9 fixed to the tip of the rod 8a of the stopper cylinder 8 is engaged with the engaging holes 1a of the guide posts 1 and 2. , 2a can be engaged and disengaged.

Now, FIG. 3 shows a state in which the stopper pin 6 of the stopper cylinder 5 of the elevating post 3 and the stopper pin 9 of the stopper cylinder 8 of the auxiliary elevating post 4 are engaged with the engaging holes 1a, 2a of the guide posts 1, 2, respectively. Shows.

In this state, when raising the lifting post 3,
First, the rod 5a of the stopper cylinder 5 is operated so as to be retracted inward, and the stopper pin 6 located at the tip of the rod 5a is pulled out from the engaging holes 1a and 2a of the guide posts 1 and 2.

Next, the rod portion 7b of the jack cylinder 7 is pushed down and the lifting post 3 is pushed up to a predetermined position. At this time, the stopper pin 6 of the stopper cylinder 5 is in a state corresponding to the engagement holes 1a, 2a located above the engagement holes 1a, 2a.

Therefore, at this position, the rod 5 of the stopper cylinder 5
When a is pushed out, the stopper pin 6 located at the tip of the rod 5a engages with the engagement holes 1a and 2a. This completes the upward movement of the elevating post 3.

Next, the rod 8a of the stopper cylinder 8 provided on the auxiliary lifting post 4 is retracted inward, and the stopper pin 9 located at the tip of the rod 8a is pulled out from the engaging holes 1a, 2a of the guide posts 1, 2.

After that, the rod 7b of the jack cylinder 7 is pushed up to raise the auxiliary elevating post 4, and when it reaches a predetermined position, the rod 8a of the stopper cylinder 8 is pushed out, and the stopper pin 9 is pushed to the guide post 1. , 2 are engaged with the engaging holes 1a, 2a. This completes the upward movement of the auxiliary lifting post 4.

As described above, the elevating post 3 and the auxiliary elevating post 4 are sequentially raised.

(C) Problems to be Solved by the Invention However, in the lifting device as described above, the stopper mechanisms provided on the lifting post 3 and the auxiliary lifting post 4 are double rod type stopper cylinders 5, 8, Since members such as the stopper pins 6 and 9 are required, the stopper mechanism is large and costly.

In addition, since the operation is difficult, there is some problem in operational safety.

The present invention has been made in view of the above-mentioned drawbacks, and it is an object of the present invention to provide a lifting device having a small and inexpensive stopper mechanism and excellent safety.

(D) Means for Solving the Problems In the lifting device according to the present invention, the stopper mechanism of the lifting post and the auxiliary lifting post is engaged with the engaging hole of the guide post.
A pair of detachable cams, a spring that hangs over the upper ends of the cams and urges the lower end of the cams to the outside at all times, and a spring that is connected to the lower ends of the cams. It is composed of a cylinder that pulls inward.

(E) Action As described above, according to the present invention, when the cam is engaged with the engagement window of the guide post, the elastic force of the spring is used, and it is not necessary to operate the cylinder at all.

Therefore, the structure of the cylinder can be made simpler than that of the conventional one, and members such as stopper pins can be eliminated, so that the stopper mechanism itself can be downsized by that amount, and the cost associated therewith can be reduced. Can be achieved. Moreover, since the operation is easy, the operational safety is improved.

(F) Embodiment Hereinafter, details of the present invention will be described with reference to an embodiment shown in the drawings.

FIG. 1 is a schematic configuration diagram showing an embodiment of a lifting device according to the present invention, and FIGS. 2 (a) to 2 (d) are operation explanatory diagrams of the lifting device.

A plurality of engagement windows 10a and 11a are provided on the guide posts 10 and 11 of the lifting device at regular intervals in the vertical direction.

The guide post 1 is provided between the guide posts 10 and 11.
An elevating post 12 capable of ascending and descending between 0 and 11 is provided, and an auxiliary elevating post 13 is provided below the elevating post 12 as shown in FIG.

Further, a jack cylinder 14 is arranged between the elevating post 12 and the auxiliary elevating post 13.

That is, the jack cylinder 14 has the cylinder portion 14 a fixed to the lifting post 12 and the rod 1
The tip of 4b is fixed to the auxiliary lifting post 13.

The elevator posts 12 and the auxiliary elevator posts 13 are provided with stopper mechanisms 15 and 16, respectively.

The stopper mechanisms 15 and 16 are provided on the guide posts 10 and 1.
One pair of cams 17 (17a, 17b), 18 (18a,
18b) and the cams 17a, 17b, 18a, 18b
Are hung from the upper ends of the cams and hung from the cams 17a, 17
b, 18a, 18b springs that constantly correct the lower end of the outside
19, 20 and the cams 17a, 17b, 18a, 18b
The lower ends of the cams are connected to each other, and when driven, the cams 17a, 17
b, 18a, 18b, and one-rod type cylinders 21 and 22 for pulling the lower ends thereof inward.

Further, the cams 17 and 18 are rotatably supported by the elevating post 12 and the auxiliary elevating post 13 via support shafts 23 and 24, respectively.

Next, the operation of the lifting device will be described.

When raising the elevating post 12, the jack cylinder 1
The rod 14b of No. 4 is driven so as to be pushed down. Then, since the auxiliary lifting / lowering posts 13 are fixed to the guide posts 10 and 11, the lifting / lowering posts 12 are lifted by the reaction force received from the auxiliary lifting / lowering posts 13. At this time, the cylinder 21 of the stopper mechanism 15 provided on the lifting post 12
Is in a free state, and the cams 17a and 17b of the stopper mechanism 15 are automatically removed from the engagement windows 10a and 11a of the guide posts 10 and 11 as the lift post 12 is raised.

After that, the lower ends of the cams 17a and 17b rotate inward around the support shaft 23, and the guide posts 10 and 1
The inside of 1 slides and rises together with the lifting post 12 (second
(See FIG. (A)).

At this time, the spring 19 is in a state of being pulled outward against its elastic force.

Next, when the cams 17a and 17b rise to the windows above the engagement windows 10a and 11a, the lower ends of the cams 17a and 17b open outward with the elastic force of the spring 19 around the support shaft 23. Then, the lower ends of the cams 17a and 17b engage with the engagement windows 10a and 11a of the guide posts 10 and 11 (see FIG. 2B).

At this time, the opening of the cam 17 is regulated by the stopper 25 so that the lower ends of the cams 17a and 17b do not open too much.

Next, the rod 14b of the jack cylinder 14 is raised. Then, the auxiliary elevating post 13 moves up by a predetermined amount following the movement of the rod 14b, and the lower ends of the cams 18a, 18b of the stopper mechanism 16 provided on the auxiliary elevating post 13 are engaged with the engaging windows 10a of the guide posts 10, 11. 11a,
The ascending / descending movement of the elevating post 12 and the auxiliary elevating post 13 is completed.

On the other hand, when lowering the elevating post 12 (auxiliary elevating post 13), the cam 17 is moved as shown in FIG. 2 (c).
(18) is slightly raised by driving the jack cylinder 14, and then the cam 17 (1
Pull the lower end of 8) inward.

Then, in this state, the space between the guide posts 10 and 11 is lowered, and the lower end of the cam 17 (18) is moved to the guide posts 10 and 11.
After passing through the engagement windows 10a and 11a of the cylinder 11, the cylinder 21
(22) is set in a free state (see FIG. 2 (d)).

At this time, the lower end of the cam 17 (18) is attached to the spring 19 (2
0) is always urged to open outward by the elastic force, and the cam 17 is provided on the window below the previous engagement windows 10a and 11a.
When the lower end of (18) is engaged, the spring 19 (20)
The lower end portion of the cam 17 (18) automatically opens outward due to the elastic force of and engages.

As a result, the lifting posts 12 (auxiliary lifting posts 13)
The descending operation of is stopped.

(G) Effect of the Invention As described above, according to the lifting device of the present invention,
When the lower end of the cam is engaged with the engagement window of the guide post, only the elastic force of the spring is used, and the cylinder does not need to be actuated at all.

Therefore, the operation becomes easier, and the operational safety can be improved.

Further, it is not necessary to make the structure of the cylinder a complicated structure of a double rod type as in the conventional case, and it is possible to make a simple structure of, for example, a single rod type, and it is also possible to eliminate the stopper pin and other members conventionally required. In addition, the stopper mechanism itself can be downsized, and the stopper mechanism can be manufactured at low cost, which has various excellent effects.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram showing an embodiment of a lifting device according to the present invention, FIGS. 2 (a) to 2 (d) are operation explanatory diagrams of the lifting device, and FIG. 3 is an example of a conventional lifting device. It is a schematic block diagram which shows. 10, 11 ~ Guide post 10a, 11a ~ Engaging window, 12 ~ Lifting post 13 ~ Auxiliary lifting post, 14 ~ Jack cylinder 15,16 ~ Stopper mechanism, 17, 18 ~ Cam 19, 20 ~ Spring, 21, 22 ~ Cylinder

Claims (1)

[Scope of utility model registration request] 1. A pair of guide posts having a plurality of engagement windows in the vertical direction, an elevation post disposed between the guide posts, an auxiliary elevation post disposed below the elevation post, and In a lifting device including a jack cylinder arranged between a lifting post and an auxiliary lifting post, a pair of cams capable of engaging and disengaging a stopper mechanism of the lifting post and the auxiliary lifting post with an engagement window of a guide post. And a spring that hangs on the upper end of the cam and always urges the lower end of the cam outward, and a cylinder that is connected to the lower end of the cam and pulls the lower end of the cam inward when driven. A lifting device characterized by the above.