JPS6113495Y2 - - Google Patents

Description

[Detailed description of the invention] This invention provides a movable lifting platform with a gripping tool that increases the clamping strength as the weight of the construction panel increases, thereby safely transporting the construction panel while preventing it from falling. The present invention relates to a construction panel conveying device that can be used to transport construction panels.

For example, building boards are pasted on the front and back of a framework made by joining frame materials and crosspieces, and the floor of a building using the panel method,
Architectural panels used for walls, roofs, etc. are becoming larger and heavier in order to improve construction efficiency. During the production of such building panels, it is also necessary to transport them to a stacking point, for example for storage.

The present invention satisfies the above requirements by providing a lifting platform with a gripping device that increases the clamping strength depending on the weight of the construction panel, thereby making it possible to transport such construction panels safely and stacking them at the stacking location. The purpose of the present invention is to provide a suitable construction panel conveying device (hereinafter referred to as the device), and one embodiment thereof will be described below based on the drawings.

In the figure, the device 1 of the present invention includes, for example, a lifting platform 9 that is movable up and down attached to a cart 7 that straddles a stacking platform 2 and a loading platform 3 and runs on a rail 6 attached to the upper end of a support column 5. In addition, gripping tools 10 and 11 are attached to both ends of the lifting table 9. The truck 7 has a wheel axle 13, a chain device 14, and a speed reducer 1.
5. By connecting to the electric motor M via the chain device 16, the vehicle travels with the rotation of the electric motor M. In addition, the trolley 7 has a long cylinder 2 in its center.
0 is placed upside down, and the lifting platform 9 attached to the lower end of the rod of the cylinder 20 moves up and down guided by guide shafts 21 and 21 as the cylinder 20 expands and contracts. On one end edge of the lifting platform 9, there are chucking cylinders 23, 2 with rods facing outward.
3 is fixed to its side frame, and the rod of the chucking cylinder 23 is pivotally connected to an arm 29 that hangs down from a support shaft 26 that is pivoted on a protruding piece 24 that protrudes from the edge of the lifting platform 9. Therefore, the chucking cylinder 23 swings the arm 29 back and forth,
It can be advanced or retreated. The gripping tool 10 is attached to the lower end of the arm 29. The gripping tool 10 has the arm 29
Horizontal rod 3 made of square steel pipes placed opposite each other with a gap at the lower end
0, a holding stand 34 for pinning the clamp claw 32 is attached via a mounting frame 35. The mounting frame 35 has a U-shaped portion that can fit into the horizontal rod 30, and is attached by bolting the bottom piece of the U-shaped portion to a fixing plate 37 attached to the upper end of the horizontal rod 30. Therefore, the mounting frame 35 can be fixed to the horizontal rod 30 in a horizontally movable manner, and on the lower surface of the bottom piece of the U-shaped portion, a guide shaft 40 to which the holding base 34 is attached with the inner end facing inward is provided horizontally and horizontally to the horizontal rod 30. A guide hole 39 for sliding in a direction perpendicular to
to be drilled. Since the horizontal rod 30 runs along the edge of the lifting table 9, the guide hole 39 is perpendicular to the edge, and the holding table 34 has a guide shaft 4 at its lower end.
The holding base 34
becomes unable to rotate. In addition, the mounting frame 35 and the holding base 34
A spring 45 that inserts the guide shaft 40 inwardly urges the holding base 34 inwardly, and the forward position of the guide shaft 40 is regulated by a nut screwed onto its outer end. Ru. The holding table 34 pins the clamp claw 32, which has an arcuate surface 47 protruding from the holding table 34 toward the inside of the lifting table 9, between its side walls. The arcuate surface 47 continuously forms sawtooth-like protrusions 50 whose radial distance increases upward from the pinning point and whose upper portion serves as a locking surface. The clamp claw 32 has an upper surface a that sandwiches the arcuate surface 47;
The lower surface b is formed to be substantially parallel, and the pin 51 attached to the lower piece of the holding base 34 and in contact with the lower surface b is urged upward by a spring (not shown), so that the arcuate surface 47 is always upward. A spring means 52, such as a so-called spring plunger, is attached to keep it moving. Note that the clamp claw 32 is attached to the holding base 34 so that its arcuate surface 47 faces inward of the lifting stage 9. Note that the other gripping tool 11 facing the gripping tool 10 is also provided with a clamping claw 32 (not shown) that protrudes inward in a stationary manner without using a chuck cylinder. 32 is the spring means 5 as described above.
2, the construction panel P is held between the clamp claws 32 and the protrusions 50 engage with the side edges of the construction panel P, so that as the construction panel P is pulled up, the clamp claws 32 can be firmly gripped by tilting downward and increasing the horizontal radial distance of engagement with the architectural panel P;
Furthermore, as the weight of the construction panel P increases, the downward rotation angle increases, thereby increasing the gripping force.

However, in the device 1 of the present invention, the electric motor M
is driven to move the trolley 7 and position it above the loading platform 13. Thereafter, the cylinder 20 is extended and the lifting platform 9 is lowered until the construction panel P on the loading platform 3 and the clamp claw 32 are approximately at the same height. Thereafter, by contracting the chucking cylinder 23, the arm 29 is rotated, and the gripping tool 10 is moved inwardly, thereby clamping the construction panel P between the clamp claws 32, 32 of the gripping tools 10, 11. Grasp both ends of the After that, when the cylinder 20 is contracted and the lifting platform 9 is pulled up, the clamp claw 32 receives the weight of the construction panel P as described above, and the protrusion 50 engages with it, increasing its horizontal radial distance. P can be firmly grasped. A spring 45 inserted between the holding stand 34 and the mounting frame 45 is attached to the holding stand 10.
When moving forward, the clamp claw 32 and the construction panel P
The clamp claw 32 is compressed as the clamp claw 32 rotates downward, and its reaction force prevents loosening during hanging. In this state, after contracting the cylinder 20 and pulling up the construction panel P, the cart 7 is moved and the chucking cylinder 23 is extended to release the engagement between the gripping tools 10, 11 and the construction panel P. , the architectural panels P can be stacked one after another on the stacking table 2.

As mentioned above, the device of the present invention has a lifting platform that can be moved up and down suspended from a trolley running on rails, gripping tools are provided on both ends of the lifting platform, and a device that is suspended from the gripping tools The clamp claw pivots downward due to the weight of the construction panel, increasing the horizontal radius distance, and has an arcuate surface with protrusions, making it easy to hang, move, and raise and lower the construction panel. However, the construction panels can be transferred and stacked one after another on a stacking table if necessary, making it suitable for use as a transport device for producing and storing construction panels. Since the claws are provided, even when the weight of the construction panel increases, the clamp claws can grip the construction panel more firmly as the weight increases, preventing accidents such as falling during transportation, and improving work safety. can be secured. Further, since the clamp claw is rotatably supported using, for example, a pin, its attachment is easy and the device can be simplified. In addition, in the device of the present invention, the clamp claw can be configured to be biased upward using a torsion spring instead of a spring plunger.
Furthermore, not only one gripping tool but both of the gripping tools can be formed so as to be movable forward and backward.

[Brief explanation of the drawing]

Figure 1 is a front view showing one embodiment of the present invention;
The figure is a plan view, FIG. 3 is a sectional view showing the clamp claw in detail, and FIG. 4 is a front view thereof. 6...Rail, 7...Dolly, 9...Elevating platform, 1
0, 11...Gripper, 20...Cylinder, 23...
...Chucking cylinder, 32...Clamp claw, 34...Holding stand, 39...Guide hole, 40...
...Guide shaft, 47...Circular surface, 50...Protrusion, 52
...spring means.

Claims (1)

[Scope of utility model registration request] A lifting platform that is movable up and down and that has gripping tools on both edges is suspended from a cart that runs on a rail, and the gripping tools include guide holes bored horizontally and at right angles to the edges at both ends of the lifting platform. a guide shaft whose outer end is prevented from slipping out and is urged inward as it passes through the guide shaft; a holding stand attached to the inner end of the guide shaft; A clamp pawl that rotates downward by the weight of the construction panel to be lowered to increase the radial distance in the horizontal direction and has an arcuate surface provided with a non-slip protrusion, and the clamp pawl is biased upward. A construction panel conveying device comprising a spring means for moving a construction panel, and in which at least one gripper is movable forward and backward.