JPH025543B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a material positioning device for assembling a ladder-like body consisting of two beams facing each other and a plurality of connecting members installed between these beams. .

For ease of understanding, FIG. 1 shows a handrail on a road or a bridge as a good example of the ladder-like object. Two types of handrails are shown here; code 1 is a handrail in which beam members 3 and 4 and connecting member 5 are orthogonal (hereinafter referred to as a parallel ladder-like structure); code 2 is a handrail in which beam members 3, 4 and connecting member 5 are orthogonal;
This is a handrail (hereinafter referred to as an inclined ladder-like body) in which the connecting member 5 is inclined with respect to the handrail 4. Usually, handrails 1 and 2
The upper and lower beam members 3 and 4 forming the structure are square steel pipes, and the plurality of connecting members 5 are flat steel strips. Which of the handrails 1,
2 is also assembled by welding. The welding is
This is done by placing two beams and a connecting member on a jig surface plate, adjusting their relative positions, and then fixing them.

When assembling a ladder-like structure as described above, in the conventional technology, a jig surface plate exclusively for the parallel ladder-like structure and a jig surface plate exclusively for the inclined ladder-like structure are selectively used, so the equipment cost is reduced and the installation space is reduced. There was a problem that the amount of work was large and the rate of absenteeism tended to be high, which was uneconomical.

The present invention aims to solve the above problems that the prior art has. Although the parallel ladder-like body and the inclined ladder-like body are different in the angle formed by the beam and the connecting member and in the positional relationship between the beams in the longitudinal direction, other elements are generally the same. The present invention makes effective use of this commonality, provides flexibility for differences, and provides a material positioning device that can be used in common with both types of ladder bodies.

In order to achieve the above object, a material positioning device for assembling a ladder-like body according to the present invention grips and supports one of the beams in a predetermined posture out of a pair of beams juxtaposed at a predetermined interval. a beam clamping device that presses the other beam to the one beam, and a beam pressing device that clamps each of the plurality of connecting members to be installed between the two beams and clamps them at predetermined intervals. and a connecting material clamping device for positioning the connecting material group, and the connecting material clamping device is provided so as to be able to freely change its posture by swinging around a support shaft that is orthogonal or approximately orthogonal to the plane in which the connecting material group is arranged, The clamping position of the connecting member clamping device is configured to be changeable so that the relative position of the connecting member with respect to the beam member can be changed accordingly.

Therefore, according to the material positioning device for assembling a ladder-like body according to the present invention, the following effects can be obtained.

By swinging the connecting material clamping device around the support shaft, various relative postures between the two beams and multiple connecting materials can be selected, and one positioning device can be used as multiple positioning means. , the parallel ladder-like body and the inclined ladder-like body can be assembled.

(b) Since the connecting material clamping device has a simple structure that simply swings around the support shaft, the positioning of the beam material, the connecting material, and the connecting materials can be determined with high precision, and the simple structure allows for dual-purpose use. This has the effect of significantly reducing equipment costs.

Embodiments of the present invention will be described below based on the drawings.

FIG. 2 shows the basic configuration of the present invention, which includes a beam clamp device 20 that clamps one beam 10, and a beam clamp device 20 that supports the other beam 12 and presses it against the one beam 10. Beam material pressing device 22
A material positioning device for assembling a ladder-like body is constituted by a connecting material clamping device 21 that clamps a plurality of connecting materials 11 installed between the two beam members 10 and 12. The above-described connecting material clamping device 21 is configured to be able to freely change its posture by swinging around a support shaft 24 that is perpendicular or substantially perpendicular to the plane on which the connecting members 11 groups are arranged, by the action of a tilting device 23, Both beam materials 10,
By changing the relative posture of the connecting member 11 with respect to 12,
Both parallel ladder-like bodies and inclined ladder-like bodies can be assembled. A specific example will be described next.

(First embodiment) In view of the fact that the beams 10 and 12 are long, the positioning device shown in FIG.
Two clamp mechanisms 3 that act on both ends of the beam 10
0 and 30, and the beam material pressing device 22 is also configured by a combination of two pressing mechanisms 32, 32. Connecting material clamp device 21
is equipped with a drive mechanism 33 composed of a single air cylinder or the like that tightens the plurality of connecting members 11 at once. Reference numeral 34 denotes a single support frame pivotally attached to the support shaft 24, 35 a fixed stopper plate, 36 a movable clamping plate, and all of the movable clamping plates 36 are connected to one connecting member 37 operated by the drive mechanism 33. is connected to.

The detailed configuration is shown in FIGS. 8 to 12. Reference numeral 50 denotes a truck that is moved along a rail 52 by the expansion and contraction of a cylinder 51, and various devices 20, 21, 22, and 23 constituting the main parts of the positioning device are attached to this truck 50.

Reference numeral 53 is a mounting plate for one of the beam members 10, 54 is a stopper, 55 is an air cylinder, 56 is a spiral end stopper, and 57 is its operating handle. code 5
Reference numeral 8 denotes an inverse strain device that, when distortion, that is, warpage, occurs in the beam material 10 due to welding, causes the beam material 10 to warp in the opposite direction in advance to offset the distortion caused by welding. The reverse strain device 58 includes a screw type pressing tool 59 and a beam mounting plate 60.

Reference numeral 61 is a mounting plate for the other beam 12, 62 is an air cylinder, 63 is a screw type end stopper, and 64 is an operating handle thereof.

A spring plunger 65 is attached to each of the movable clamping plates 36 connected to one connecting member 37 constituting the connecting member clamping device 21 .
This is a configuration for making the clamping pressure constant even if there is an error in wall thickness in the plurality of connecting members 11 groups.
Reference numeral 66 denotes a screw type advancing/retracting tool for tilting the connecting member 37 around the shaft 24.

Reference numeral 67 is a stopper for regulating the limit of movement of the cart 50, and a forward/backward handle 6 is attached to the screw shaft 69.
8 is installed. Reference numeral 70 is a robot welding device, which welds beams 10 and 1 with the working radius of arm 71.
In order to cover the entire area of 2, the trolley 50 is moved and pulled into the working radius.

The operating instructions are as follows.

a Set one of the beams 10.

b The beam material 10 is held between the cylinders 55, 55.

c Apply reverse distortion when necessary.

d Set the connecting member 11.

e. Clamp the connecting members 11 in the cylinder 33.

f Tilt the connecting member 37 by the required angle when necessary.

g Set the other beam 12.

h Press with cylinders 62, 62.

i Robot welding start command.

j First welding completed.

k Movement of the trolley 50.

l Second welding begins.

m Second welding completed.

n Return of truck 50.

o Release the clamp.

p Extraction of ladder-like object.

(Another embodiment) As shown in FIG. 4, when forming an inclined ladder-like body, the end point 40 of one beam 10
The line connecting the end point 42 of the connecting member 11 is often made parallel to the connecting member 11. This embodiment provides a configuration for streamlining such positioning. As shown in the drawing, the stoppers 43 and 44 are connected via an equal amount reversing device 45, so that vectors A and B representing movement are opposite in direction and equal in size. Since the vectors A and B have a one-to-one correspondence with the tilting angle φ of the connecting material clamping device 21, it is also effective to link the tilting device 23 and the same amount reversing device 45.

The connecting material clamping device 21 may be configured to clamp a group of non-parallel connecting materials 11, as shown in FIG. As shown in FIG. 6, the connecting material clamping device 21 may be configured to clamp the parallel connecting materials 11 in an inclined position. As shown in FIG. 7, the beam material clamping device 20 and the beam material pressing device 22 are connected to one beam material 10 and the other beam material 10.
It is also possible to configure them so that they are non-parallel.

The beam members 10 and 12 described in each embodiment are located in one flat plane, and may be parallel to each other,
Sometimes this is not the case. Each beam member 10, 12 may be straight or not. Each of the beam members 10 and 12 may differ in one or more of elements such as cross-sectional shape, cross-sectional dimension, length dimension, material, etc., or all of them may be the same. Each matter regarding the above beam materials 10 and 12 is as follows.
This also applies to the plurality of connecting members 11. Although handrails on roads, bridges, etc. have been described as a good example of the ladder-like body, the ladder-like body of the present invention is not limited to these handrails.

Incidentally, although reference numerals are written in the claims section for convenient comparison with the drawings, the present invention is not limited to the structure shown in the accompanying drawings.

[Brief explanation of drawings]

Figure 1 is a front view of the pedestrian bridge. FIG. 2 is a basic configuration diagram of the present invention, FIG. 3 is a conceptual diagram of the first embodiment, and FIGS. 4 to 7 are conceptual diagrams of different embodiments.
Fig. 8 is a plan view of the first embodiment, Fig. 9 is a side view thereof, Fig. 10 is a front view thereof, Fig. 11 is a side view of the connecting member clamping device, and Fig. 12 is a longitudinal section showing the spring plunger. FIG. 10, 12... Beam material, 11... Connecting material, 20...
...beam material clamping device, 21...connection material clamping device, 22...beam material pressing device, 24...support shaft.

Claims (1)

[Claims] 1. A pair of beam members 10 arranged side by side with a predetermined interval,
12, a beam material clamping device 20 that clamps and supports one beam material 10 in a predetermined posture, a beam material pressing device 22 that presses the other beam material 12 against the one beam material 10 side, and both beam materials A connecting material clamping device 21 is provided which clamps each of the plurality of connecting materials 11 to be constructed between the members 10 and 12 and positions them at predetermined intervals, and the connecting material clamping device 21 is used to clamp the connecting materials 11 between the connecting materials 11. It is provided so that the posture can be changed freely by swinging around a support shaft 24 that is perpendicular or substantially perpendicular to the plane on which the connecting member 11 is arranged, so that the relative posture of the connecting member 11 with respect to the beam members 10 and 12 is changed in accordance with this change in posture. A material positioning device for assembling a ladder-like body is configured such that the clamping posture of a connecting material clamping device 21 can be freely changed. 2. Claim 1, wherein the beam material clamping device 20 and the beam material pressing device 22 are arranged so that one beam material 10 and the other beam material 12 are parallel to each other.
A material positioning device for assembling a ladder-like body as described in 2. 3. The material positioning device for assembling a ladder-like body according to claim 1, wherein the connecting material clamping device 21 clamps the plurality of connecting materials 11 in a mutually parallel or substantially parallel posture. 4. For assembling a ladder-like body according to claim 3, wherein the connecting member clamping device 21 clamps the plurality of connecting members 11 in an attitude perpendicular or substantially perpendicular to the direction in which the connecting members 11 are arranged side by side. material positioning device.