Connection method for thin-walled members

FIELD: building, particularly to produce light building structures, namely in building site.

SUBSTANCE: connection includes ends of members to be connected, tightening bolts with washers. Conical depression and conical boss are formed in washer surfaces facing each other. When nut is tightened on tightening bolt the members are jammed in conical cavity between the washers.

EFFECT: increased load-bearing capacity of the connection.

3 cl, 3 dwg

 

The invention relates to the field of construction and can be used in the manufacture of lung structures of buildings and constructions, including the construction site.

You know the connection of thin-walled elements, including the ends of the connected elements, combine overlapping and coupling bolts with washers [see A.S. No. 640003, MCL E 04 1/58. BI No. 48 17.01.79].

A disadvantage of the known solutions is the low bearing capacity of the connection of thin-walled elements.

You know the connection of thin-walled elements, including the ends of the connected elements, combine, overlap, and fastening elements. The fastening elements are in the form of screws with increasing the cylinder diameter screw thread. When installing the screw is bending sheets in place of the hole, which leads to an increase in the area of collapse and, consequently, to increase the bearing capacity [see France Patent No. 2113666, MCL E 04 B 1/00. PC "Fig. abroad", No. 13 of 1972].

A disadvantage of the known compounds is the complicated design of the screw of variable diameter and regularity of the connection options of the limb, which reduces the bearing capacity of the connection.

Closest to the invention is the connection of thin-walled elements, including the ends of the connected elements, combined overlapping and coupling bolts with washers installed what about the center punch in the joined elements [see A.S. 369408, MCL E 04 B 1/58, Bulletin No. 30, 25.10.79. 4].

A disadvantage of the known solution consists in insufficient bearing capacity, so as a punch and a bolt mounted in the hole with a gap, has a different flexibility, and therefore, is consistent with the exhaustion of carrying capacity.

The invention is directed to increasing the carrying capacity of the connection of thin-walled elements.

The result is achieved that the connection of thin-walled elements, including the ends of the connected elements, combined overlap, coupling bolts with washers installed in aligned holes in the center of the punch into the connecting elements according to the invention are facing each other, the surfaces of both washers are made correspondingly tapered recess and a conical thickening, and a punch in the joined elements created by deformation in the conical cavity between the washers when tightening the bolt.

For the efficient operation of compounds suitable maximum diameter of the conical recesses to perform in the range of 0.9-1,1t the base diameter of the conical thickening, where t is the total thickness of the connected elements. The maximum diameter of the conical recess and a conical thickening of smaller diameter washers.

Figure 1 shows a General view of the connection node of thin er is the elements. Figure 2 shows a section 1-1 of the connection node a in figure 1 during the Assembly process. Figure 3 Dan cut 1-1 node connection figure 1.

The connection node of thin-walled elements includes the ends of the connected elements 1, United overlap and pinch bolt with 2 washers 3 and 4. A bolt provided with a nut 5, the washer 3 made with a conical recess, the washer 4 is made with a conical thickening, while the maximum diameter of the conical grooves in the range of 0.9-1,1t (0.9-1.1t - tolerance, in which the observed load-bearing capacity of the element and the lowest torque) of the base diameter of the conical thickening, where t is the total thickness of the connected elements.

The joint Assembly is performed in the following sequence.

The ends of thin-walled elements 1 with pre-made holes combine overlapped to align the centers of the holes. On the bolt 5 install the washer 4 having a conical thickening, the maximum diameter (dut) is less than diameter washers (d). The bolt 5 with the installed washer 4 is installed coaxially in the bore of connected elements. Then with the other hand on the bolt set washer 3 with a conical recess, the maximum diameter (dut) which is also less than the outer diameter of the washer. After you install the washers 3 install the nut 5 and have it tightened. When tightening giki washers 3 and 4 converge the edges of connected elements 1 on the perimeter of the holes are deformed into a conical cavity between the washers 3 and 4.

Deformation elements 1 leads to the formation of the limb, which is rigidly zaselyaetsya in the conical cavity between the washers 3 and 4. In the compound (1) perception shift effort, acting on the element 1, is due to the inclusion in the work connected thin-walled elements around the perimeter of crushing between the washers, which increases the carrying capacity of 1.5-2 times.

1. The connection of thin-walled elements, including the ends of the connected elements, combined overlapping and coupling bolts with washers installed in aligned holes in the center of the punch in the joined elements, characterized in that face each other, the surfaces of both washers are made correspondingly tapered recess and a conical thickening, and a punch in the joined elements created by deformation in the conical cavity between the washers when tightening the bolt.

2. The compound according to claim 1, characterized in that the maximum diameter of the conical recesses of one washer is in the range (0,9-1,1)t the maximum diameter of the conical thickening another washer, where t is the total thickness of the connected parts.

3. The compound according to claim 2, characterized in that the maximum diameter of the conical to the deepe the deposits and conical thickening is less than the outer diameter of the washers.



 

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