JPS6030360Y2 - table lifter - Google Patents

Description

[Detailed Description of the Invention] The present invention aims to provide a table lifter, particularly a table lifter that can be conveniently used when setting beam forms at construction sites.

An embodiment of the present invention will be described below based on the attached illustrative drawings. As shown in FIG. The base 7 is equipped with a ground plate 5.6 with screws for fixing the position at the ends of the set of support bars 3, 4, and has an elevating platform 9 that can be raised and lowered parallel to the base 7 via a pantograph link 8. Supported.

The expansion and contraction of the pantograph link 8 is achieved by interposing the link between the upper link 11 and the base 7 of the double links 10 and 11 interposed between the base 7 and the lowest link of the pantograph link 8. If the piston/cylinder unit 12 is extended or retracted
This can be done by making one work.

As shown in FIGS. 2 to 4, an article mounting table 13 having approximately the same size as the lifting table 9 is supported on the lifting table 9. As shown in FIGS.

One ends of two links 14 and 15 of the same length are pivotally supported by vertical shafts at the center position of the bottom surface of the article mounting table 13 and the center position of the top surface of the lifting table 9, and the free ends of both links 14 and 15 are They are pivotally connected to each other by a vertical shaft 16.

Further, the article mounting table 13 is supported movably along a horizontal plane parallel to the lifting table 9 by a plurality of supporting means 17 attached to the lifting table 9.

This range of movement is limited by the collision between the peripheral wall falling portion 18 of the article mounting table 13 and the surrounding support means 17 (or a separately attached stopper).

With the above configuration, the article mounting table 13 can be moved or rotated in any direction within a certain range along the horizontal plane.

Note that the rotation about the pivot point with the link 14 is limited by the collision between the peripheral wall falling portion 18 and the supporting means 17 in the periphery, but it is possible to The movement of these members may be restricted by extending the double links 14, 15 in a straight line.

As the support means 17, the smooth bottom surface 1 of the article mounting table 13 is used.
Although a freely rotatable sphere 20 making point contact with the ball 9 was used, the present invention is not limited thereto.

In this case, the peripheral wall falling portion 18 will abut against the supporting casing 21 of the sphere 20.

Reference numeral 22 denotes a fixing means for fixing the article mounting table 13 to the lifting table 9 in a fixed position (completely overlapping vertically), and is provided protruding from one side of both. -23,24
and an eye plate 2 protruding from two other sides of the article mounting table 13.
6.27 includes locking pins 28 and 29 that are removably attached to the lifting platform 9.

The locking pins 28 and 29 are connected to the lifting platform 9 as shown in FIG.
The locking pins 28 and 29 are movable up and down within a certain range through guides 30 and 31 attached to the levers 34 and 34, respectively, which are pivotally supported on the lifting platform 9 by shafts 32 and 33. The middle part on the inner end side of .35 is the long hole 36, 37 and the pin 3.
8.39, and the inner ends of both levers 34.35 are connected to each other by an elongated hole 40 and a pin 41, and the pin 4
An unfixing operation cable 42 is connected to 1.

Furthermore, a tension spring 4 is connected between the outer ends of both levers 34 and 35.
3 is interposed.

As shown, when the tension spring 43 is below the neutral line 44 connecting the shaft 32.33, both levers 34.35
is urged upward, so both locking pins 28, 29 are at their upper limit positions and engage with eye plates 26, 27.

To explain one method of using the table lifter configured as above, as shown in FIG. The pantograph link 8 is extended by the cylinder unit 12 to lift the formwork 45 to a predetermined height, and the formwork 45 is erected between the two girder concrete forms 46. The mounting table 13 is fixed in advance to the lifting table 9 with the locking pins 28 and 29 (however, the fixation with the bolts and nuts 25 is released), and the mounted formwork 45 is inserted between the concrete forms 46 for both girder beams. The formwork 45 is oriented in such a manner that it can be lifted above both the formworks 46 in a direction that connects at right angles, and in this state, the pantograph link 8 is extended to lift the formwork 45 to a predetermined height.

Next, the operating cable 42 is stretched from the ground, and both levers 34 and 35 are
The inner end of is lowered against the tension spring 43 to a position below the neutral line 44.

As a result, the tension spring 43 moves above the neutral line 44 and urges both levers 34 and 35 downward, so that both locking pins 28 and 29 are moved to the lower limit position by the tension spring 43. and separates from the eye plates 26 and 27.

Therefore, since the article mounting table 13 can move or rotate in any direction along the horizontal plane within a predetermined range, the formwork 45 can be rotated and moved together with the article mounting table 13, and both ends of the frame 45 can be moved or rotated in any direction along the horizontal plane. By contracting and lowering the pantograph link 8 while positioning it at a predetermined position above the concrete formwork 46, both formworks 46 and 46 are fitted together, and the formwork 4
5 can be easily constructed.

When the article mounting table 13 is lowered by contraction of the pantograph link 8, the article mounting table 13 is moved so that the holes in the eye plate 26.27 and the locking pins 28.29 face each other.
In this state, by lifting either lever 34 or 35 by hand, both locking pins 28.
29 engages and remains stable in the eye plate 26,27.

When used for simple work of lifting and lowering articles, by further connecting the eye plates 23 and 24 with bolts and nuts 25, it is possible to prevent the danger of the article mounting table 13 becoming free due to the operation cable 42 being pulled unexpectedly. .

Note that the double links 14 and 15 are effective as means for preventing the article table 13 from floating, but when the article table 13 is fixed to the lifting table 9 by the fixing means 22, both links 1
4. If the pivot points of each gold side in 15 are located concentrically, it is not easy to move the article mounting table 13 in the length direction of the links 14 and 15 immediately after the fixation is released.

Therefore, as shown in FIG. 2, it is preferable that the pivot points on the metal sides of both links 14, 15 are spaced apart from each other when the circular tables 13, 9 are fixed when viewed from above.

Further, for the same purpose, another link may be interposed between the free ends of both links 14, 15 to form a double link.

Fixing means using bolts and nuts 25 can also be provided at multiple locations.

Further, as the unlocking state holding means for holding the locking pins 28 and 29 in the unlocking position, in addition to using a pair of two-position stable swinging levers 34 and 35 as in the embodiment, It is also possible to use a locking pawl that automatically locks the locking bottle that is biased in the direction (direction) at a certain lowered position.

The table lifter according to the present invention can be implemented and used as described above. According to the table lifter according to the present invention, even when the positional accuracy of the lifted article is a problem, the table lifter according to the present invention can be used after lifting the article. The table lifter can be moved lightly and easily together with the article mounting table while the article is supported by the table lifter without moving, and the necessary positional accuracy can be easily obtained.

Moreover, the article mounting table is not a turntable that simply rotates around one axis, but can be moved or rotated in any direction within a certain range along a horizontal plane, making it very easy to align the lifted article. Moreover, it can be performed with high precision.

Furthermore, according to the configuration of the present invention, the article mounting table and the lifting table are connected by a double link or more connecting links, so that the article placing table can be moved in any direction along the horizontal plane. In spite of this, it is possible to prevent the article mounting table from lifting up or accidentally coming off the lifting table, so that it can be used safely.

In addition, since the article mounting table can be fixed in a fixed posture to the lifting table by the fixing means, the danger of horizontal movement of the article loading table when lifting an article is eliminated, and in some cases, the present invention This table lifter can be used safely and conveniently for simply lifting articles in the same way as conventional table lifters.

Note that the article mounting table 13 may be a frame structure depending on the article to be supported.

In such a case, the support means 17 may be attached to the lower surface of this article mounting table, and the upper surface of the lifting table 9 may be made a smooth surface.

Also, with this configuration, by removing the article mounting table together with the links 14 and 15, it can be used as a conventional table lifter.

[Brief explanation of the drawing]

Fig. 1 is a front view showing the table lifter of the present invention in a state in use, Fig. 2 is a plan view of the article mounting table, Fig. 3 is a partially vertical front view of the article mounting table support, and Fig. 4 is the same. FIG. 5 is a front view showing the fixing means. 7... Base, 8... Pantograph link, 9... Lifting platform, 12... Piston cylinder unit, 13... Article Mounting stand, 1
4, 15... Double link, 17... Supporting means, 20... Sphere, 22... Fixing means, 25... Bolt nut. , 28.29...
... Locking bottle, 34, 35 ... Lever, 4
2...Fixation release operation cable, 43...Tension spring.

Claims (1)

[Scope of Claim for Utility Model Registration] ■ An article mounting table that is movable or rotatable in any direction along a horizontal plane within a certain box is provided on a lifting table that is supported by a pantograph link so that it can be raised and lowered on a base. The table lifter comprises a table lifter in which the article mounting table is connected to the lifting table by a double link or more connecting links, and a releasable fixing that fixes the article placing table in a fixed posture to the lifting table. Table lifter with means. (2) The table lifter according to (2), wherein the fixing means includes a locking pin that is unlocked by pulling the lock release operation cord. (2) The table lifter according to item (2), further comprising unlocked state holding means for holding the locking pin in the unlocked position. ■ The table lifter according to item (i) or (i), which also includes fixing means using bolts and nuts.