JPH07292989A - Steel joint assembling device - Google Patents

Abstract

PURPOSE:To enable brackets to be centered and positioned with respect to each web of a core column through a small number of processes and with high accuracy and efficiency, in temporarily welding a joint. CONSTITUTION:A pair of holding blocks 21, 21 are simultaneously moved toward or away from the opposite ridges of a core column 5 using one motor 15 via one ball screw to ensure that the core column is positioned and centered. Opposite brackets 8, 8 corresponding to the webs of the core column 5 are also moved toward or away from the webs simultaneously by moving their setting device 19 back and forth using one ball screw. Therefore, the core column 5 of a joint, and each bracket 8, 8..., can surely be positioned and centered by a single operation, and the joint can be temporarily welded with high accuracy. The handling operations required to temporarily weld the joint are reduced, the joint can be constructed with good reproducibility, and a highly accurate column can be obtained at enhanced product accuracy, reduced cost, enhanced safety and increased efficiency.

Description

Detailed Description of the Invention

[0001]

[Field of Industrial Application] The disclosed technology is used in a manufacturing factory of a unit joint forming a main part of a column pillar having a closed cross section such as a square or a SRC pillar which occupies the center of a steel aggregate of a building such as a middle or high-rise building. It belongs to the field of assembly and welding technology.

[0002]

2. Description of the Related Art As is well known, when the life of citizens is improved,
Clothes and eating habits have become richer, and people are now pursuing reliable work performance in a favorable environment and qualitatively satisfied personal life.

On the other hand, even in an industry that backs up abundant civic life, it has also made remarkable progress, and therefore it is natural that both civil society and industrial society need better facilities. is there.

However, in Japan, where the country is narrow and there are many forested mountainous areas, and the terrain conditions approach the complicated coastline, the hilly areas and plain areas are extremely limited, and urban and rural areas are extremely limited. Regardless of the land used for farming, livestock and livestock, effective use of land for housing and industrial facilities is extremely limited.Therefore, in housing, supply and demand for medium- and high-rise buildings such as so-called apartments and condominiums are limited. It has become popular, and even in the case of corporate facilities, it has become popular to adopt a form that maximizes the use of the space above and below the ground, such as medium (ultra) high-rise buildings and underground facilities. ing.

By the way, in Japan, which is geographically located in an earthquake-prone area, earthquake resistance is indispensable for various structures in terms of the properties of the ground, etc. In buildings such as buildings that make effective use of as much as possible, the form of concrete (although there is no form) structure through steel frames and reinforcing bars has been the basic design from the past, so the column that forms the center of the structure Steel columns such as columns and SRC columns are extremely important from the viewpoint of connecting and connecting beams to the surroundings and arranging them, and have sufficient seismic resistance, strength, rigidity, and information systems such as intelligent buildings in recent years. It is necessary to take a high-precision structural form from the viewpoint of a sufficiently-arranged mating structure as well as general precision machinery and equipment in various types of equipment.

Therefore, as a condition for large-scale assembly of large-sized column pillars and SRC pillars of steel columns used in middle- and high-rise buildings, etc., and transporting them to a construction site, such as transportation to an installation site, etc. Due to restrictions, it is extremely important to join and connect as large a size of steel frame as possible in a manufacturing plant with high precision through welding or the like.

In particular, a column pillar having a closed cross section and a steel frame pillar such as an SRC pillar, which form an essential part of the structure, have a sufficient strength for large-scale assembly of a predetermined number of joined bodies of the unit trunk member and the unit joint,
It is necessary to carry out the rigidity and precision, but as shown in FIG. 6 for the large assembly, the column pillar 1 has a trunk material 2 having a rectangular cross section of a predetermined size through the joints 3, 3. It is necessary to form a joined body with high precision in the unit of mm. For each of the connections 3, a core column 5 is integrally provided between square plate-shaped diaphragms 4 and 4, and the diaphragm 4 of the core column 5 is integrated. On the other hand, a bracket 8 having a substantially H-shaped cross section in which a pair of flanges 6 and 6 are integrated by a web 7 is tentatively assembled and welded in a factory, and then main assembly is carried out in a predetermined manner to make a large assembly with the stem member 2. Is generally performed.

Thus, in the joint 3, the core column 5
As shown in FIG. 7, the protrusion of the bracket 8 with respect to
Depending on the design, there are various aspects such as B mode shown in the horizontal joint (a), B'mode of the one side water gradient joint (b), and B '' mode shown in the two side water gradient joint (c). And simply mechanically attaches the bracket 8 to the diaphragm 4 of the core column 5.
Welding does not allow high-precision large-scale assembly as designed.

The height (length) of the bracket 8 with respect to the core column 5 also differs depending on the design, and the same joint 3
Even if there is, the length (height) of the bracket 8
There are various different designs.

Therefore, the core column 5 is set at a predetermined position in the center of the apparatus frame, and the bracket 8 is set in a predetermined posture (including a water gradient inclination posture) with respect to the set core column 5.
4 and 5 for welding and assembling large parts have been researched and developed, put into practical use, and various types have been improved and improved for use in steel frame assembly. There is.

[0011]

As a matter of course, in the steel frame assembling apparatus 100 of the conventional mode, the core column 5 is set with respect to the center of the table 22 provided at the center of the base frame 9 thereof. Accurate centering,
Needless to say that the positioning is performed, and when the bracket 8 is temporarily welded to the core column 5 that is once set, it is necessary to hold the posture in a rigid state. Therefore, naturally, clampers are required, In addition, the bracket 1 that is temporarily welded to the core column 5 has the same high precision centering and positioning jig 1 as that for the core column 5.
Not only 9 but also a nut holder 1 which can be moved back and forth to be taken out and moved for large assembly after the temporary welding is completed.
8 is required, and a sub clamper of the bracket 8 for the nut holder 18 is also required.
A posture adjusting device 30 for holding the designed tilted posture of the bracket 8 with respect to the core column 5 is also required, and in some cases, a swinging device 31 is also required, and as described above, each bracket 8 around the same core column 5 is also required.
Since it is necessary to perform centering, positioning, etc. due to the difference in the heights of the balls, the handles 13, 13 ... of the ball screws 11 for the clampers must be equipped even in the balance with welding work (motor 15, sprocket 16, chain 17). Therefore, as a matter of course, since the number of work steps is large and temporary welding and the like are often performed manually, the work is remarkably complicated, resulting in poor accuracy and reduced yield. I was afraid.

Particularly, the positioning and centering of the core column 5 with respect to the frame 9 and the table 22, and the attitude adjustment, positioning and centering of each bracket 8 with respect to the set core column 5 are the most important works. In particular, in order to position and center the bracket 8 including the core column 5, it is indispensable to equip with at least four handles 13, 13 ... In order to avoid inferior accuracy and decrease in yield, the worker has a high precision skill, and the steel frame handling work is 3K (Kiken, Kitanai, Kitui). There is also a disadvantage that work efficiency is significantly reduced due to a shortage of manpower due to bad conditions such as), resulting in high cost.

For the positioning and centering of the core column 5, for example, an improved design such that the work is efficiently performed by the bifurcated pressing block 21 for the ridge of the core column 5 has not been put into practical use. However, in order to move the pair of pressing blocks 21 and 21 facing each other forward and backward through one ball screw 11 (although they are diagonally crossed) and the like, the handle 13, 13 are operated independently of each other, and even if a turntable or the like is provided on the frame 9, the operator must individually operate the handles 13, 13 ... The positions of which are different by 180 °. There was an inconvenience that it was extremely complicated.

In the process of bringing the bracket 8 close to the core column 5, it is extremely difficult to perform the final degree of correctness of the orthogonal postures on the horizontal plane at the stroke end, and it requires considerable skill. However, there was a negative point that significantly reduced the work efficiency.

[0015]

OBJECT OF THE INVENTION The object of the invention of the present application is to form a core column which is a unit column prior to large-scale assembly of a steel column, such as a large-sized column column, which forms the center of a middle- and high-rise building based on the above-mentioned prior art, in a factory. And a certain number of brackets to be fitted around the unit, complicated handle operation in unit assembly, and positioning of core columns and brackets that require skill, and troublesomeness of centering work and technical problems to be solved. As an issue, the number of operations for setting, positioning, and centering the core column and each bracket is minimized to facilitate temporary welding in large assembly. You can work accurately and safely.
It is an object of the present invention to provide an excellent steel joint assembly device that is efficient and can be manufactured at low cost, and which is beneficial to the field of utilizing steel frame joint technology in the construction industry.

[0016]

In order to solve the above-mentioned problems, the structure of the invention of the present application, which is based on the above-mentioned claims and has the above-mentioned object, is a factory in which a column pillar of a predetermined length and a large size is manufactured. In order to assemble the unit joint via temporary welding of the bracket to the core column at a predetermined gradient, etc. prior to large assembly with the core column, set the core column to the center of the table of the frame in a predetermined posture in a standing posture. , The nut holders provided at each of the four corners of the frame are formed into twin units that face each other and are screwed into one ball screw so that the nut units can move forward and backward, and the ball screws of the twin units are mutually It is installed in a crossed state in the central part so as not to interfere, and is linked to a drive device such as one motor or a manual handle. Also, a bracket for each web of the core column is also provided. The other nut holders of the frame are clamped to the nut holders of the frame, and are attached in a predetermined posture by the posture displacing device. Is rotated and a pair of opposing nut holders are moved forward and backward in synchronization with each other, and a pressing block provided at the tip of each nut holder is synchronized and brought into close contact with all the ridges of the core column to bring the core into contact. The column is positioned and centered as designed with respect to the frame, and the set posture is fixed by the clamper. Therefore, the core column is set on the frame in one action and the height posture is surely maintained. A predetermined tilted posture, distribution posture, and gradient posture are adopted through the bracket posture changing device for the core, and the posture is maintained and the core is maintained. Proximally abuts on the ram, performs predetermined temporary welding there, and after completion of temporary welding, the nut holder retreats in synchronism with one action almost in the same manner as described above, where the bracket is integrally temporary welded to the core column Is taken out from the column joint assembling device and is subjected to main welding for large assembly so that good reproducibility is always guaranteed and highly accurate joint assembly is efficient,
It is a technical measure that ensures safe and high yield.

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The following will describe one embodiment of the invention of this application with reference to the drawings of FIGS.

The same parts as those in FIG. 5 and subsequent figures will be described using the same reference numerals.

In the illustrated embodiment, the unit port 3 shown in FIG. 7A is a horizontal port, and the core column 5 is set, positioned, and centered on the port assembly device.
Also, setting, positioning, and centering of each bracket 8 with respect to the core column 5 are performed, provisional welding is possible, the structure is simple, the cost is reduced, and the operability of the work is easy. 100 'is a steel frame assembling apparatus that forms the subject of the invention of this application, in which the cross-shaped base frame 19 is as flat as possible with respect to the base 9'by a screw stand or the like. It is designed to be capable of leveling, and substantially square plate-shaped frames 9, 9 ... Are provided at its four corners with ball screw 11 having sufficient strength and rigidity to advance and retreat synchronously with respect to the central portion. It is arranged freely.

Ball screws 11, 11 are provided over bearings 10, 10 at both ends of the base frame 19 of each frame 9 in the diagonal direction, and each ball screw 11 in the diagonal direction is shown in FIG. Similarly, the levels are extended along the planes whose levels are different from each other, and the midpoints thereof are provided in a 90 ° cross shape so as not to directly intersect each other.

Each ball screw 11 is shown in FIG.
As shown in Fig. 5, the reverse screws 12 and 12 'are engraved from the central part to the front part and the rear part, respectively, and the nut holders 18 and 18' in which the internal screws are engraved are respectively screwed and slidable. When the ball screw 11 is rotated in the same direction in a fixed posture, the ball screws 11 are opposed to each other and can move forward and backward synchronously at the same speed as shown by an arrow.

A holding block 21 having an inner surface concavely formed at 90 ° with respect to each ridge 5 ′ of the core column 5 and a holding block 21 ′ for the diaphragm 4 of the core column 5 are provided.
Ball screws 11 "and 11" that move the bracket 8 forward and backward by shifting the phase by 45 ° relative to the ball screws 11 and 11 that move forward and backward together.
Are also arranged in a cross shape by changing their phases by 90 ° so as not to cross each other by making the levels different from each other.

A manual type advancing / retreating device 20 is provided at the upper end of each nut holder 18, 18 'to perform fine movement advancing / retreating adjustment with respect to the ridge 5'of the core column 5 of the pressing block 21 and the diaphragm 4. Is being done.

In FIG. 3, the upper and lower ball screws 11, 11 are shown in a side view for the sake of convenience of illustration because the upper and lower ball screws 11 and 11 cross each other in the central portion of the frame 9 without crossing each other. ing.

In each ball screw 11, a chain 17 has a predetermined tension between a sprocket 13 provided at one end of the ball screw 11 and a sprocket 16 of a motor 15 as a driving device provided on the frame 19. Engagement is stretched, and therefore, while each ball screw 11 is rotated in the same direction by the motor 15,
.., that is, the nut holders 18 and 18 'are screwed into the front and rear reverse screws 12 and 12', and the nut holders 18 and 18 'are moved toward and away from the core column 5 synchronously by the reverse screws 12 and 12'. Therefore, the two units facing each other with respect to the core column 5, that is, the four presser blocks 21, 21, ... Are moved forward and backward in synchronization with each other, and are moved to the ridge portion 5 ′ of the core column 5. Abutment engagement at the same time, and
At the same time, both ends of the frame 9 are made to be able to approach and separate in parallel with the web of each bracket 8 in parallel via spacers 24 'as shown in FIG. Further, the bracket 8 for each web of the core column 5 is also moved forward and backward synchronously so that the bracket 8 can be positioned, centered, and brought into close contact with and separated from and retracted.

The spacer 24 'for the web 7 of the bracket 8 also has a function of adjusting the mounting position of the bracket 8 on the core column 5, and is appropriately detachable from the frame 9.

As in the conventional mode shown in FIG. 4, in the set table 22 for the core column 5 which is arranged in a floating state with respect to the frame 9, the height adjusting screw erected on the base frame 19 is erected. The rotation nut 23 is adapted to freely adjust the height and posture of the core column 5 by vertically moving the set table 22 in parallel with the rotation nut 23 by a motor 25 via a reduction gear (not shown). .

Therefore, in each frame 9, the pressing block 21 for the ridge 5'of the core column 5, the pressing block 21 'for the diaphragm 4, and the spacer 24' of the pressing block for the web of the bracket 8 are unitized. It will be arranged.

In the above structure, when the horizontal joint 8 shown in FIG. 7A is assembled by temporary welding, the predetermined core column 5 is floated with respect to the frame 9 and the height adjusting screws 24, 2 are provided.
4 is set in a predetermined position (the web on the side surface is in a position facing the corresponding bracket 8) on a rectangular set table 22 arranged via the computer 4, and a computer (not shown) is used (by design). Starts the motor 15 as a driving device synchronously by a worker's predetermined schedule and manual operation according to a program, and the sprocket 16 and the sprocket 1 are connected via the chain 17.
3 rotates the ball screw 11 in a predetermined direction, and screws 1 in the opposite directions of the front and rear of the ball screw 11 are provided.
The nut holders 18, 18 'screwed to 2, 12', that is, the frame 9 synchronously advance in opposite directions.

At this time, as shown in FIG. 3, the ball screws 11 and 11 crossing at different levels vertically by 90 ° interfere with each other because they have different levels in the vertical direction as described above. There is no such thing.

Therefore, the frames 9, 9 ... Arranged at the four corners of the base frame 19 synchronously approach the set table 22 at the same speed.

Therefore, the operation of each frame 9 does not change.

At this time, a predetermined spacer 24 'for the bracket 8 is set at the edge of each frame 9.

Then, the nut holder 1 is attached to the frame 9.
When each presser block 21 fixed via 8, 18 'approaches synchronously with the ridge 5'of the core column 5, the presser blocks 21 are brought into close contact with the ridge 5'of the core column 5. Then, the core column 5 is set on the table 22 as designed.

Therefore, since the respective motors 15 operate synchronously, all the pressing blocks 21, 21, ... Simultaneously come into close contact with the ridges 5'of the core column 5 in close contact with each other, and the temporarily set core column is set. 5 is reliably positioned and centered with respect to the set table 22.

During this time, each frame 9 advances to the central set table 22 all at once, and the spacers 24 at both ends of the frame 9 move forward.
'Closely abut on each bracket 8 in synchronization.

In this way, the ridge portion 5'of the core column 5 is
Are pressed together all at once, that is, at the same time, they are brought into close contact with each other to perform positioning, centering, and tightening (also adjusting height), and immediately thereafter, each bracket 8 for the core column 5 It is possible to move all at once and set in a predetermined posture, after confirming that,
As in the conventional mode, the core column 5 and the bracket 8 are preliminarily assembled by temporary welding.

After completion of the assembling by the temporary welding, all (actually two) motors 15 are reversely rotated, and the pressing blocks 21, 21, ... Forming each twin are retreated all together via each frame 9. Then, the restraint to the joint 3 is released, and the joint 3 temporarily welded is easily taken out from the steel frame joint assembling apparatus 100 ′ and used for the main welding.

When the temporary welding of one joint 3 is completed, the above process is repeated to perform the temporary welding of the next joint 3, in which case the positioning of the core column 5, the centering, and the
Since the brackets 8 are positioned and centered at the same time with respect to the core column 5, the accuracy thereof does not vary, and provisional welding with the same accuracy is ensured with sufficient reproducibility and can be excellently performed.

Positioning and centering of one joint 3 in the temporary welding are not performed manually by individual handles as in the conventional case, but one motor 15 of a driving device is used for each twin unit. Since it is performed all at once, no skill is required for the work, variations in accuracy are eliminated, and since it is performed with good reproducibility as described above, the product yield is good, let alone the main welding in the post process,
Even in the large assembly, the joining accuracy with the trunk member 2 is also excellent, and the column pillar 1 of a predetermined large size can be formed with high accuracy as designed.

Of course, the embodiment of the invention of this application is not limited to the above-mentioned embodiment. For example, a limit switch, a proximity switch, or the like may be provided at the stroke end of each setting device or nut holder. Various modes such as monitoring with a television camera can be adopted.

Further, in terms of design change, it is possible to use a manual handle instead of a motor as a driving device, and four motors and handles are made into a single unit to work together as a one-action type. Of course, it is also possible.

The application target is not limited to the column column joint, but can be applied to the steel column joint such as the SRC column.

[0044]

As described above, according to the invention of this application, basically, a large-sized column pillar or SRC of a structure such as a middle and high-rise building is basically used.
For temporary welding of joints in the front stage of large-scale assembly of steel columns such as columns in a factory, the same ball screw that links the setting, positioning and centering of the core column to the device via one drive By synchronously advancing and retracting the device for setting the presser bracket and the nut holder for each ridge of the core column, positioning and centering in the corresponding fitting of the core column and the bracket can be performed with a very small number of steps, and with certainty. Therefore, not only the workability can be improved and the cost can be reduced by reducing the number of steps, but also the accuracy of the butting and the like can be guaranteed extremely high. ,
By performing the work according to the manual without requiring any skill, the work can be performed with high accuracy and reproducibility, and as a result, the reliability of the product accuracy is remarkably improved.

Further, since the upper and lower diaphragms which reveal important accuracy can be tilted at the same time when the core column and the bracket are positioned and aligned at the time of assembly, the accuracy of the joint is also improved from this point. The excellent effect that the complexity can be reduced can be achieved.

Therefore, even in assembling a steel frame structure such as a large-sized column pillar, there is an excellent effect that the construction and work can be performed with high precision similar to the precision of machines and devices in various facilities.

[Brief description of drawings]

FIG. 1 is an enlarged half-view of an essential part of an embodiment of the invention of this application.

FIG. 2 is an enlarged half-view of a main part of the advancing / retreating mechanism.

FIG. 3 is a side view of the main part of a partial cross section of the mechanism section.

FIG. 4 is a partial cross-sectional side view of the lifting mechanism for the set plate.

FIG. 5 is a schematic perspective view of a conventional assembling apparatus for assembling a joint.

FIG. 6 is a schematic exploded perspective view of a column pillar.

FIG. 7 is an exploded schematic perspective view of a joint mode of a joint.

[Explanation of symbols]

 5 Core Column 21 Holding Block 9 Frame 11 and 11 'Ball Screw 18 and 18' Nut Holder 6 Flange 4 Diaphragm 8 Bracket 100 'Steel Frame Assembly Device 15 Drive Unit (Motor)

Claims (2)

[Claims] 1. A steel-frame joint assembling apparatus in which pressing blocks, which are opposed to and come apart from a core column having a predetermined size and a short length, are moved back and forth via ball screws provided over the corners of a frame. Steel frame assembly device, wherein the pressing blocks are respectively arranged diagonally of the core column on a pair of frames engaged with the same ball screw so as to be movable back and forth in opposite directions in synchronization with each other. . 2. The steel frame joint assembling apparatus according to claim 1, wherein the ball screws are arranged in a pair so as to cross each other and are linked to a single drive unit.