JPH083597Y2 - Wall panel mounting device - Google Patents

Description

[Detailed Description of the Invention] << Industrial Application Field >> The present invention grasps the side edge of a horizontally arranged wall panel or sucks the front surface of the wall panel with a suction cup (hereinafter, both are collectively referred to as "holding"). The present invention relates to a trolley-type wall panel attachment device suitable for standing up and installing the wall panels so as to be adjacent to the wall installation position of a building in parallel and set up in parallel.

<< Prior Art >> For example, in a construction site, when a stacked wall panel is grasped one by one from the upper one and is erected, and is erected at a predetermined position of a building, a crane or the like is used. It is common. That is, a clamp device for gripping a wall panel is attached to the lower end of a wire suspended by a crane, and both side edges of the wall panel are gripped by this clamp device.

As a conventional clamp device used in such a case, as shown in, for example, Japanese Utility Model Laid-Open No. 62-59681, a fixed type clamp is attached to one end of a rod-shaped arm and a hydraulic jack or the like is attached to the other end. It is known that a pressure-operated clamp is attached so that the wall panel can be strongly gripped by both clamps.

However, depending on the construction site, it may be difficult to install a crane due to space restrictions or the like. For this reason, the applicant has installed a jig for wall panel pick-up on a truck that can move on the floor so that even a relatively small floor area can be easily picked up and set up on a stand. A wall panel mounting device has already been proposed (for example, Japanese Utility Model Application No. 1-82).
No. 256 (Actual fair 6-7176) etc.). This wall panel mounting device is in the form of a gate, and has a base frame provided with a carriage that can move freely at the lower end of each column, and parallel to each other that is vertically mounted to each column of this frame. A pair of support arms and an elevating and lowering operation mechanism for elevating and lowering each of the support arms, and a clamp device that is attached to each of the support arms and grips and turns up opposing side edges of a wall panel in a horizontally mounted state to rise. It is a thing.

In the above wall panel mounting device, the center of gripping rotation of the wall panel by the clamp device is offset by a certain distance above the combined center of gravity of the clamp device and the wall panel when the wall panel is vertically erected. When the wall panel is lifted by the clamp device, the wall panel is naturally rotated in the direction in which the side of the center of gravity is lowered to stand up.

<Problems to be Solved by the Invention> With the device according to the above-mentioned proposal, the above-mentioned problems can be solved and a sufficient effect can be exerted in that respect, but the holding device such as the clamp device has a wall. When the wall panel is not held, such as after the panel is hung up, the stability of the holding device may deteriorate. That is, by holding and lifting the central side surface of the wall panel with the holding device, the center of holding rotation by the holding device is set above the composite center of gravity of the wall panel and the holding device so that the wall panel naturally stands up. As a result, when the wall panel is not held, the center of gravity of the holding device itself deviates to the side of the rotation center. Therefore, after the wall panel is installed vertically, when the holding device is opened, the holding device rotates under its own weight, and the wall panel holding surface of the holding device faces upward. However, there is a problem in that it cannot be retained.

Although the holding device is stable when the center of gravity of the holding device is arranged above the vertical line of the rotation center, the center of gravity of the holding device is on the vertical line of the rotation center even if a slight rotational force is applied to the holding device. And the holding device is rotated by an eccentric moment due to its own weight, and the holding surface is likely to be in a vertical state. If the rotation of the holding device due to its own weight is abruptly performed during the work, there is a risk of contact, and there is also the trouble of requiring a manual returning work.

Therefore, although measures have been taken so far to prevent rotation by means of insertion pins, this pin method may cause forgetting to insert or forgetting to remove.

The present invention has been made in view of such circumstances, and not only can the wall panel start-up operation be automatically performed, but also the holding surface of the holding device can be stabilized so as to face downward even when the wall panel is not held, An object of the present invention is to provide a wall panel attachment device that can reliably hold a wall panel and can improve safety and workability.

<Means for Solving the Problems> In order to achieve the above object, the wall panel mounting device according to the present invention has a gate shape, and a base frame provided with a trolley at the lower end of each of the support columns. A pair of parallel support arms mounted on each of the columns of the base frame so as to be movable up and down, an elevating operation mechanism for elevating the support arms, and a wall mounted on each of the support arms and placed horizontally. And a holding device that grips opposite side edges of the panel or adsorbs the front surface with a suction cup and rotates to stand up.
One of the holding and pivoting center position of the wall panel by the holding device is set to a position deviated by a certain distance upward from the combined center of gravity of the holding device and the wall panel when the wall panel is vertically erected. A biasing means is provided for biasing the holding device in the direction in which the panel holding surface faces downward when the wall panel is not held.

<Operation> When the wall panel is mounted on the wall, first, the gate-shaped base frame is placed at a position where the horizontally mounted wall panel can be crotched.
In this state, the support arm is lowered, and the side edges of the wall panel facing each other are gripped by the clamp device, or the front surface of the wall panel is sucked by the suction cup.

After holding the wall panel by the holding device, the support arm is raised. In this case, the center of rotation for holding the wall panel by the clamp device is set to a position displaced by a certain distance upward from the combined center of gravity of the holding device and the wall panel when the wall panel is vertically erected. Therefore, as the wall panel is picked up, the wall panel naturally rotates in the direction in which the side of the center of gravity becomes lower, and stands up in a substantially vertical state.

After the wall panel is set up, it may be moved to a predetermined installation position to install the wall panel.

After that, the wall panel may be held again by the holding device in the opened state and the above operation may be repeated.However, in the holding device, the wall panel holding surface faces downward in the wall panel non-holding state by the urging means. Since the holding device is stabilized in the wall panel holding state, the operability is improved, unnecessary rotation is prevented, and the safety is improved.

<< Embodiment >> An embodiment of the present invention will be described below with reference to the drawings.

1 to 4 show the construction of the wall panel mounting device according to this embodiment, and FIGS. 5 to 9 show the operation.

As shown in FIGS. 1 to 3, a gate-shaped base frame 1 is provided. The base frame 1 includes a pair of left and right supporting columns 2,
It is composed of a plurality of horizontal frame portions 3 for connecting and fixing the upper ends of the support columns 2, and a carriage 5 for supporting the lower ends of the support columns 2 on the floor surface 4 so as to freely rotate.

Each of the support columns 2 of the base frame 1 includes a cylindrical lower support column 2a,
It consists of an upper strut 2b inserted into the lower strut 2a, and the upper strut 2b is connected at its upper end to a hydraulic cylinder 10 as a lifting operation mechanism provided in parallel with the lower strut 2a. A pair of support arms 6 which are parallel to each other are attached to the upper column 2b so as to be able to move up and down. Each of the support arms 6 is substantially L-shaped, and one side of each support arm 6 is slidably supported by the hollow frame-shaped support portion 2 via the guide roller 7.

In addition, each support arm 6 is suspended from the upper strut 2b by a wire or a chain (hereinafter referred to as "wire") 8,
The wire 8 is fixed to the lower strut 2a via a pulley 9. The upper column 2b is expanded and contracted by the operation of the hydraulic cylinder 10, and the support arm 6 can be moved up and down through the wire 8.

A clamp device 14 for holding the opposite side edge of the wall panel 13 in a horizontally mounted state is provided between the tip ends of the support arms 6. The clamping device 14, as shown in detail in FIG.
A clamp holding member 16 rotatably supported at the tip of each support arm 6 through a horizontal shaft 15 in a vertically rotatable manner, and a clamp holding member 16 which is integrally rotatable with the clamp holding member 16 and slides in a direction in which the clamp holding member 16 moves toward and away from each other. And a pair of clamps 17 having a substantially L-shaped cross section that are held so as to be capable of being held. And each clamp 17
An expansion / contraction drive mechanism 18 including a hydraulic cylinder attached to the clamp holding member 16 is slidably driven in opposite directions.

Further, the center of rotation (a position of the shaft 15) a (see FIG. 7) for gripping and rotating the wall panel 13 by the clamp device 14 corresponds to the clamp device 14 and the wall panel 13 when the wall panel 13 is vertically erected. It is set at a position that is apart from the composite center of gravity position by a certain distance above.

Further, a coil spring 19 is provided as a biasing means that biases the clamp device 14 in a direction in which the wall panel gripping surface faces downward when the wall panel 13 is not gripped. The coil spring 19 is a tension spring and is stretched between one end of the clamp holding member 16 and the support arm 6.
The tension of the coil spring 19 has a spring constant that does not prevent the wall panel 13 from being vertical.

Further, the support arm 6 is provided with a pulley 20 that moves along the longitudinal direction thereof via a groove 21, and the middle portion of the coil spring 19 is hooked and bent by the pulley 20. The direction of tension of the spring 19 can be changed. That is, when the pulley 20 is moved to the tip side of the support arm 6, the bending angle becomes large and the tension becomes large. On the contrary, if the pulley 20 is moved to the base end side of the support arm 6, the tension becomes small.

 Next, the operation will be described with reference to FIGS.

When the wall panel 13 is mounted on the wall, first, as shown in FIG. 5 (A), the gate-shaped base frame 1 is arranged at a position where it can be groped on the wall panel 13 in the horizontally mounted state. In this state, the supporting arm 6 is lowered, and the wall panel 13 is clamped by the clamp device 14.
Grip the opposite side edges of.

After gripping the wall panel 13 by the clamp device 14,
As shown in FIGS. 5B to 5D and FIG. 6, the support arm 6 is gradually raised. In this case, the clamping device
The center of gripping rotation of the wall panel 13 by 14 is set to a position displaced a certain distance upward from the combined center of gravity of the clamp device 14 and the wall panel 13 when the wall panel 13 is vertically erected. Therefore, as the wall panel 13 is picked up, the wall panel 13 naturally rotates in the direction in which the side of the center of gravity becomes lower, and stands up in a substantially vertical state. After the wall panel 13 is set up, the wall panel 13 may be moved to a predetermined installation position to install the wall panel.

Thereafter, the wall panel 13 may be gripped again by the clamp device 14 in the opened state, and the above-mentioned operation may be repeated. However, the clamp device 14 has the coil spring 19 as the urging means.
Since the wall panel holding surface is urged downward by the wall panel non-holding state, the clamp device 14 is stabilized in the wall panel holding state. This action is shown in detail in FIGS.

That is, in FIGS. 7 and 8, the rotational force due to the clamp's own weight (M _c is M _c = W _c · e = W _c · X · sin θ).

Where W _c is the weight of the clamp itself, e is the horizontal distance from the center of rotation to the center of gravity, θ is the rotation angle of the clamp (when horizontal, 0
), X is the distance between the center of gravity position b of the clamp device 14 and the grip rotation center position a.

Further, the rotational force (M _s ) due to the tensile force of the spring is M _s = P _s · _es ≠ P _s · L · cos θ. Here, P _s is the tension force of the spring, e _s is the distance from the rotation center to P _s , L is the distance between the fixed position on the clamp holding member 16 and the gripping rotation center position a with respect to the coil spring 19. is there. P _s is almost proportional to the angle change of θ. e _s is minimum at θ = 0 ° and θ = 90 °, and increases at intermediate angles. Assuming that the action direction of P _s is always parallel to P _o °, then e _s = L × cos (45 ° −θ). In the derivation of es, it is assumed that the distance between the clamp holding member 16 and the pulley 20 is sufficiently long, and the line segment connecting the two forms an angle of 45 degrees with the horizontal plane. This is shown in FIG.

When these rotational forces are combined, it becomes as shown in FIG. 9, and the following can be understood from the same figure.

(1) At an angle close to horizontal, it tends to become horizontal, and at an angle close to vertical, it tends to become vertical.

(2) Since the rotational force is small, sudden rotation does not occur.

(3) Since the rotational force is small, it can be returned from the vertical state to the horizontal state with a small force.

Therefore, according to the present embodiment, the clamp device 14 can be stably held in the wall panel gripping state, the operability can be improved, unnecessary rotation can be prevented, and the safety can be improved.

In the above embodiment, the clamp device 14 is attached to the wall panel 13
In the non-grasping state, the tension coil spring 19 was used as the biasing means for biasing the panel gripping surface downward.
A torsion coil spring or the like may be used.

Further, in the above embodiment, the tension of the coil spring 19 can be stretched by the pulley 20, but other constructions can be adopted as the tension stretching means, and the tension stretching means can be omitted when the tension is appropriate. You can also do it.

The same applies to the case where a suction device such as a suction cup is used instead of the clamp device.

<< Effects of the Invention >> As described above, according to the wall panel mounting device of the present invention, the clamping device is biased by the biasing means in the direction in which the wall panel gripping surface faces downward in the non-gripping state of the wall panel. As a result, not only can the operation of starting the wall panel be performed automatically, but even when the wall panel is not gripped, the gripping surface of the clamping device is stabilized so that it faces downward, and the wall panel can be gripped reliably. An effect such as improvement of safety and workability is achieved.

[Brief description of drawings]

1 is a perspective view showing an embodiment of a wall panel mounting device according to the present invention, FIG. 2 is a front view thereof, FIG. 3 is a side view thereof, FIG. 4 is a plan view thereof, FIG. 5 and FIG. FIG. 6 is a diagram showing a clamp action, FIGS. 7 to 9 are action explanatory diagrams showing a clamp rotating state, and FIG. 10 is an explanatory diagram for obtaining a rotational force due to a catching force of a spring. 1 ... Base frame 2 ... Struts 5 ... Truck 6 ... Support arm 10 ... Hydraulic cylinder (elevating operation mechanism) 13 ... Wall panel 14 ... Clamp device 16 ... Clamp holding member 19 ... Coil spring (Biasing means)

Claims (1)

[Scope of utility model registration request] 1. A base frame having a gate shape and provided with a carriage that can move freely at the lower end of each of the support columns, and a pair of parallel bases attached to each of the support columns of the base frame so as to be vertically movable. A support arm and an elevating / lowering operation mechanism for elevating and lowering each of the support arms, and gripping opposite side edges of a wall panel mounted on each of the support arms and in a horizontally mounted state, or sucking the front surface with a suction cup to rotate. And a holding device for raising the wall panel by means of the holding device, and a center position for holding and rotating the wall panel by the holding device is a constant distance from a combined gravity center position of the holding device and the wall panel when the wall panel is vertically erected. A wall panel mounting device characterized in that it is provided with a biasing means which is set to a position displaced upward and biases the holding device in a direction in which the panel holding surface faces downward in a non-holding state of the wall panel.