Dowel joint of wood elements in building structures

FIELD: construction.

SUBSTANCE: invention relates to construction, in particular to joints of wooden structures on cylindrical dowels. Dowel joint of wooden elements includes connected elements, wooden pads and cylindrical dowels installed into previously drilled holes. Cylindrical dowels have longitudinal cone-shaped slots with depth that reduces to dowel ends, where trapezoidal wedges are rigidly fixed with rectangular cross section and width equal to width of slots section, at the same time one side of wedges is arranged as geared.

EFFECT: reduced labour intensiveness of making joint and increasing its rigidity.

3 cl, 4 dwg

 

The invention relates to construction and can be used for connections of wooden construction elements, including connections, to meet the requirements of besteality (radioprogramas), increased corrosion resistance, demagnetise.

You know the connection of wooden structural members, including the joined items, wooden plates and steel or fiberglass cylindrical pins that are installed in pre-drilled holes (Construction of wood and plastics. Edited Gen. Ed. 4th, revised and enlarged additional M.: stroiizdat, 1975, s, .IV.14).

The disadvantage of this known connection is the necessity of setting coupling navalnyj bolts, the number of which ranges from 25 to 100% of the total number of pins (SNiP II-25-80 "Wooden structure" / Gosstroy of Russia): Federal state unitary enterprise of CSE, 2004, s, p), which increases the complexity of manufacturing and material connections. In addition, in connection with the use of fiberglass cylindrical pins (Construction of wood and plastics. Edited Gen. Ed. 4th, revised and enlarged additional M.: stroiizdat, 1975, s-551, rich) has the following disadvantages:

- the complexity and mnogodelnosti manufacturing navalnyj bolts as using three different molds individual is about to stud bolt, for nuts and washers, and in the machining of workpieces on lathes, milling and drilling machines;

- use a variety of press materials, for example, AG-4C for stud bolt and AG-4B for nuts;

- the use of complicated design (and therefore expensive) molds required for the simultaneous molding of the head, the body of the bolt and thread on its end, for the manufacture of nuts with flange and thread;

- low strength thread, especially the cut in the traditional way, due to the reduced resistance of the thread on the fiberglass rod to shift.

The technical result obtained from the use of the invention is to reduce the complexity of the connection and increase its rigidity.

The problem is solved due to the fact that in nahelem connection of wooden structural members composed of connected elements, wooden plates and cylindrical pins that are installed in pre-drilled holes, cylindrical pins have conical longitudinal grooves with depth, decreasing to the ends of the dowel, which is rigidly fixed trapezoidal wedges rectangular cross-section with a width equal to the width of the cross section of grooves, with one side of the wedges made gear.

In addition, the trapezoidal wedges with a store who have end can be sharpened, and cylindrical pins and trapezoidal wedges may be made of extruded structural fiberglass.

The invention is illustrated in the drawing, in which figure 1 shows a General view navalnogo connections of wooden elements; figure 2 - General view of the cylindrical dowel Assembly; figure 3 is a cylindrical Nagel with a longitudinal tapered grooves; figure 4 is a trapezoidal wedge.

Nagelneu connection of wooden structural members includes the connected elements 1, wooden plates 2, cylindrical pins 3 with a longitudinal tapered grooves trapezoidal wedges 4. Cylindrical pins have conical longitudinal grooves with linearly varying depth, decreasing to the ends of the dowel, which is driven trapezoidal wedges rectangular cross-section with a width equal to the width of the cross section of grooves, having one longitudinal side is smooth and the opposite side of the gear that provides the simplicity and reliability of connection and eliminates the need of setting coupling navalnyj bolts.

Nagelneu connection of wooden construction elements with a wooden lining collected as follows:

on the joined items 1 set wooden plates 2, fixing their position, for example, by means of clamps;

-by means of mechanized construction tool (drill, the drill) caused by marking drill holes for cylindrical pins 3;

cylindrical pins 3 are inserted into drilled holes in the joined elements 1 and wooden plates 2;

- cone-shaped longitudinal grooves in the cylindrical pins 3 at the same time score trapezoidal wedges 4, clamps cylindrical pins 3 into the drilled hole and make the connection tight and permanent.

Due to the serrated sides of the trapezoidal wedges 4, scored in the longitudinal tapered grooves in the cylindrical pins 3, wooden plates 2 are fixed in the project position without any additional installation tie navalnyj bolts. To prevent splitting the wood depending on its hardness and orientation of the slots in relation to the fibers of the trapezius wedges 4 butt hammered into the wood, can be sharpened.

When using cylindrical pins 3 with a longitudinal tapered grooves and trapezoidal wedges 4 structural fiberglass technical result obtained from the use of the invention is achieved:

- by giving the connecting parts simplest configuration without the use of threaded mates;

- simplification and cheapening of moulds for their production;

- by reducing azetidin connecting parts to two.

1. Nagelneu connection of wooden structural members, including the joined items, wooden plates and cylindrical pins that are installed in pre-drilled holes, characterized in that the cylindrical pins have conical longitudinal grooves with depth, decreasing to the ends of the dowel, which is rigidly fixed trapezoidal wedges rectangular cross-section with a width equal to the width of the cross section of grooves, with one side of the wedges made gear.

2. Nagelneu connection of wooden structural members according to claim 1, characterized in that the trapezoidal wedges-side end is pointed.

3. Nagelneu connection of wooden structural members according to claim 1, characterized in that the cylindrical pins and trapezoidal wedges made of extruded structural fiberglass.



 

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