CN2169659Y

CN2169659Y - Rack joint member

Info

Publication number: CN2169659Y
Application number: CN 92233543
Authority: CN
Inventors: 王天应; 阮耀先; 彭亮生
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-09-22
Filing date: 1992-09-22
Publication date: 1994-06-22
Anticipated expiration: 2002-09-22

Abstract

The utility model discloses a rack joint member, comprising a bolt ball and fastening parts. The fastening parts are a bidirectional threaded bolt of double paths and two nuts. The two nuts are respectively thin and thick. The rear segment of the bolt is longer than the previous segment, with bigger diameter. The screw thread of the previous segment is screwed and rotated rightward into a bolt hole on the bolt ball, the screw thread of the rear segment is rotated leftward, and the two thin and thick nuts are cooperatively used to make a member connected and fixed. The radians of the two segments of diameter difference sections and a spherical surface are mutually matched. No small plane is arranged on the spherical surface of the bolt ball. The joint member has the advantages of light weight, material saving, low fabrication cost, high bolt stress, convenient processing and installation and convenient detaching.

Description

Rack joint member

The utility model belongs to a kind of building structural element.

In prior art, a kind of bolt-ball net frame node component is arranged.Told about this node component for the 175th page of " flat plate framed structure design " book of writing at Liu Xiliang, Liu Yixuan, Chinese architecture engineering publishing house publishes in July, 1979.Be arranged with facet and little equilateral triangle on the surface of its bolt sphere.Each facet is all vertical with the center of circle, boring and hitch on each facet.Securing member is plain bolt, hexagonal tube cap and pin.Rod member is a steel pipe.Bolt is put into from steel pipe one end, puts hexagonal tube cap then, and passes the hole, the ellipse garden of length on the hexagonal tube cap, the pin hole on the bolt with pin, with spanner turn hexagonal tube cap, bolt is tightened in the screw thread of spheroid.The shortcoming of this member is: bolt only bears pulling force, leans on the sleeve power transmission during pressurized.For the ease of bolt is screwed in the screwed hole, need perforate on hexagonal tube cap, on bolt, slot, and with pin hexagonal tube cap and bolt card together.So not only weakened the supporting capacity of member, and pin is easy to fracture when turn hexagonal tube cap, the half pin that remains in the hole be difficult to take out, and takes a lot of work, time-consuming, expense material.Some facets need be made in the ball surface just can make hexagonal tube cap and ball surface closely fixing, and spheroid will be big like this, and will be not only heavy, and take material.

The purpose of this utility model is to improve securing member, and makes the member installing/dismounting easier by improving securing member, and stressed power transmission is better, and weight is lighter, processes more convenient.

The utility model comprises bolt sphere and securing member two parts.Securing member is two footpath bidirectional helical bolts and two nuts of thin and thick.This bolt divides two sections of front and back, and back segment is longer than the length of leading portion, diameter is big, and there is the radian that matches with sphere in diameter difference cross section, and pitch can differ one-level.According to structural requirement, as the span requirement, the size of decision bolted node sphere and securing member processes the different securing member of design same size size.The path bolt of leading portion is a right-handed thread, and is consistent with the screw thread rotation direction of the securing member of China all kinds of grid node members, matches with bolt hole internal thread on the bolt sphere.The big footpath bolt thread of back segment is left-handed, and the hex nuts different with two thickness match.When two nuts were adjacent to, its interface friction force was bitten both each other, and at this moment again with spanner turn thin nut to the right, this nut just no longer follows the screw thread of big footpath bolt and advances, but drove path bolt precession bolt sphere.Because big footpath bolt is opposite with the path bolt thread, so when removing fixed beam again after tightening the path bolt, the path bolt not only can not withdraw from from bolt hole on the contrary can be tighter.Compare with prior art, owing to need not slot, do not need to use pin on bolt, do not need boring on the nut, thereby make bolt stress improve 10%, and be convenient to processing, installing/dismounting is also very convenient.Because the back segment of this bolt is bigger than leading portion diameter,, advance leading portion path bolt easily again so the back segment turn arm of force is big.The cambered surface that matches with sphere is processed in two sections diameter difference cross sections before and after the bolt, make the power transmission between bolt and the ball better, and can keep former sphere, needn't on sphere, process facet, both simplified processing, spheroid can be dwindled again again, thereby save materials, reduction cost, weight reduction.

The utility model accompanying drawing:

Fig. 1: the utility model grid node member

Fig. 2: the bolt sphere of the utility model grid node member

Fig. 3: two footpaths bidirectional helical bolt of the utility model grid node member

Fig. 4: the high nut lateral view of the utility model grid node member

Fig. 5: the thin nut lateral view of the utility model grid node member

The utility model embodiment:

According to structural requirement,, press suitable bolt sphere spheroid (1), bolt (2), high nut (3), the thin nut (4) of accompanying drawing processing as the span requirement.Bolt sphere is the empty stomach hemispherical, adopts high strength steel one time punching molded with loose tool.Auger shell keyhole (5) on the sphere, its aperture and internal thread and path bolt match.Calculate quantity, position and the aperture size of portalling according to force request.Buy suitable steel pipe as rod member (6) according to force request.Conehead (7) on the rod member (6) is gone up porose.Bolt (2) adopts high strength steel processing, and its pair footpath bidirectional helical is by common machining process processing.Pitch generally can differ from one-level.With the parts assembled on site that processes.Bolt (2) is passed from conehead (7), and with thin nut (4), high nut (3) is enclosed within the large-diameter portion branch of bolt successively, and follows the screw thread precession respectively.When thin nut (4) is screwed into when keeping the position of slight void with conehead, follow screw thread precession high nut (3) again, be adjacent to interlock each other until two nuts.Continue turn, the minor diameter part branch begins to be screwed in the bolt hole (5) on the spheroid, until tightening.Carry out last adjustment then with fastening rod member.High nut (3) is moved back pine slightly, two nuts are disengaged, then thin nut (4) is screwed into the position that is adjacent to conehead (7) and tightens, again high nut (3) is screwed into the position that is adjacent to interlock with thin nut (4), further tighten with spanner.Bolt (3) is tightened fixing with bolt sphere (1) and rod member (6) simultaneously.

Claims

1, a kind of grid node member comprises bolt sphere (1) and bolt (2), it is characterized in that the back segment of bolt (2) is bigger than the diameter of leading portion.Leading portion path bolt is a right-handed thread, matches with bolt hole internal thread on the bolt sphere (1), and the big footpath of back segment bolt is a left hand thread, with cover thereon high nut (3) and the internal thread of thin nut (4) match.

2,, it is characterized in that there is radian in two sections diameter difference cross sections before and after the described bolt (2), and match with the sphere of bolt sphere (1) according to the described grid node member of claim 1.

3, according to claim 1 and 2 described grid node members, the back segment that it is characterized in that described bolt (2) is than preceding segment length.

4, according to claim 1 or 2 described grid node members, it is characterized in that the bolt hole on the described bolt sphere (1) directly gets out on sphere, do not have facet on the sphere.

5, according to the described grid node member of claim 3, it is characterized in that the bolt hole on the described bolt sphere (1) directly gets out on sphere, there is not facet on the sphere.

6,, it is characterized in that the pitch of two sections of the front and back of described bolt (2) can differ one-level according to claim 1 or 2 described grid node members.

7,, it is characterized in that the pitch of two sections of the front and back of described bolt (2) can differ one-level according to the described grid node member of claim 3.

8,, it is characterized in that the pitch of two sections of the front and back of described bolt (2) can differ one-level according to the described grid node member of claim 4.

9,, it is characterized in that the pitch of two sections of the front and back of described bolt (2) can differ one-level according to the described grid node member of claim 5.