CN220644607U

CN220644607U - Large-span truss

Info

Publication number: CN220644607U
Application number: CN202322243242.0U
Authority: CN
Inventors: 张明远; 孔飞
Original assignee: Shandong Rongxin Huisheng Electromechanical Technology Co ltd
Current assignee: Shandong Rongxin Huisheng Electromechanical Technology Co ltd
Priority date: 2023-08-21
Filing date: 2023-08-21
Publication date: 2024-03-22
Anticipated expiration: 2033-08-21

Abstract

The utility model relates to the technical field of trusses and discloses a large-span truss, which comprises a bottom cross rod, wherein a central connecting bolt, a central connecting slot, a triangular connecting bolt and a triangular connecting slot are arranged at the joint of the top cross rod, the bottom cross rod, a central web member and a triangular web member, the structural stability of the truss is improved by adding a splicing mode on the basis of welding, the influence on the integral structural strength of the truss caused by the easy local stress concentration caused by intensive welding at a connecting node is avoided, the integral structural strength of the truss is reduced, the integral structural strength of the truss is improved by arranging a reinforcing clamping plate at the joint of the central web member and the bottom cross member, and the clamping stability of the truss is improved by matching a fixing bolt with a limiting hole and a fixing bolt.

Description

Large-span truss

Technical Field

The utility model relates to the technical field of trusses, in particular to a large-span truss.

Background

Truss: a structure is formed by connecting rod members with each other at both ends by hinges. The truss is a plane or space structure which is composed of straight rods and is generally provided with triangular units, and truss rod members are mainly subjected to axial tension or compression, so that the strength of materials can be fully utilized, the materials can be saved compared with the solid web beams when the span is large, the dead weight is reduced, and the rigidity is increased. The truss has the advantages that the rod piece mainly bears tension or compression force, the material effect can be fully exerted, the material is saved, and the structural weight is reduced. The steel truss, the reinforced concrete truss, the prestressed concrete truss, the wood truss, the steel and wood combined truss and the steel and concrete combined truss are commonly used, and the prior art is as disclosed in the publication number: the following deficiencies exist in CN 204435669U:

the prior art large-span steel truss generally adopts a triangular truss with high stability and strong bearing capacity. A plurality of web members are connected to a single node of the triangular truss girder structure, and the trusses are generally welded to form a connection mode of the girders and the web members, so that local stress concentration is easily caused by intensive welding at the connection node, the integral structural strength of the trusses is affected, and the integral structural strength of the truss girders is reduced.

Disclosure of Invention

(one) solving the technical problems

Aiming at the defects of the prior art, the utility model provides a large-span truss. The truss girder structure has the advantages that the structural stability is improved by adding the plugging mode on the welding basis, so that the problem that local stress concentration is easily caused by intensive welding at the connecting node, and further the integral structural strength of the truss girder is affected, and the integral structural strength of the truss girder is reduced is avoided.

(II) technical scheme

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a large-span truss, includes the bottom rail, the bottom rail top is provided with the top rail, central point between bottom rail and the top rail is provided with the center web member, the both ends of center web member respectively with bottom rail and top rail fixed connection, fixedly connected with one row of triangle web member between bottom rail and the top rail is triangle-shaped slope setting, the bottom rail, center web member and bottom rail junction punishment do not have center connection slot, center web member both ends respectively fixedly connected with center connection bolt, and center connection bolt and center connection slot peg graft, triangle web member and bottom rail all offer triangle connection slot with top rail junction, triangle web member both ends fixedly connected with triangle connection bolt, and triangle connection bolt and triangle connection slot peg graft.

Preferably, the fixed mounting in position of going up the top of horizontal pole and being in the top of center web member has the reinforcing plate, makes the horizontal pole through setting up the reinforcing plate, strengthens the intensity of going up the horizontal pole, avoids causing local stress concentration because of intensive welding easily because of junction, and then leads to the holistic structural strength of truss to influence, leads to the holistic structural strength of truss girder to reduce.

Preferably, two reinforcing clamping plates are arranged on the outer wall of the joint of the lower cross rod and the central web rod, the two reinforcing clamping plates are respectively arranged on the front surface and the back surface of the joint of the lower cross rod and the central web rod, and the integral structural strength of the truss girder is increased by clamping the reinforcing clamping plates.

Preferably, the reinforcing splint is divided into two splint, articulated column, two fixing bolts, two the bottom of splint is articulated through the articulated column, two fixing bolts runs through the both sides and threaded connection of two splint respectively, through the mode that sets up fixing bolts, conveniently installs fixedly to reinforcing splint.

Preferably, the fixing bolt is in the clamping plate and is in threaded connection with the fixing nut, and the fixing bolt can be prevented from loosening by arranging the fixing nut, so that the structural stability is improved.

Preferably, limiting holes are formed in two sides of the clamping plate, which are located on the contact surface of the fixing nut, fixing bolts are inserted into the inner walls of the limiting holes, and the fixing nut can be prevented from loosening by matching the limiting holes with the fixing bolts, so that the structural stability is improved.

(III) beneficial effects

Compared with the prior art, the utility model provides a large-span truss, which has the following beneficial effects:

1. this large-span truss sets up central connection bolt, center connection slot, triangle connection bolt, triangle connection slot's connected mode through setting up in last horizontal pole, bottom rail, center web member, triangle web member's junction, through having increased grafting mode on the welding basis and increased its structural stability, avoid causing local stress concentration because of intensive welding easily because of connected node department, and then to the holistic structural strength of truss leads to the holistic structural strength of truss to reduce.

2. This large-span truss through set up the mode of strengthening the splint centre gripping in the junction of center web member and lower transverse rod, increases the holistic structural strength of truss girder, through the cooperation of fixing bolt with spacing hole and fixed bolt again, increases its clamping stability.

Drawings

The accompanying drawings are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the embodiments of the utility model, serve to explain the utility model. In the drawings:

FIG. 1 is a front elevational view of the structure of the present utility model;

FIG. 2 is a front cross-sectional view of the structure of the present utility model;

fig. 3 is a side cross-sectional view of a structurally reinforced cleat of the present utility model.

In the figure: 1. a lower cross bar; 2. an upper cross bar; 3. a central web member; 301. the center is connected with the slot; 302. the center is connected with a bolt; 4. triangle web members; 401. the triangle is connected with the slot; 402. the triangle is connected with the bolt; 5. a reinforcing plate; 6. reinforcing the clamping plate; 601. a clamping plate; 602. a hinge post; 603. a fixing bolt; 604. a fixing nut; 605. a limiting hole; 606. and fixing the bolt.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.

Example 1

As shown in fig. 1-3, the utility model provides a large-span truss, which comprises a bottom cross bar 1, wherein an upper cross bar 2 is arranged above the bottom cross bar 1, a central web member 3 is arranged at the central position between the bottom cross bar 1 and the upper cross bar 2, two ends of the central web member 3 are respectively fixedly connected with the bottom cross bar 1 and the upper cross bar 2, a row of triangular web members 4 are fixedly connected between the bottom cross bar 1 and the upper cross bar 2 and are arranged in a triangular inclined manner, central connecting slots 301 are respectively arranged at the joints of the bottom cross bar 1 and the central web member 3 and the upper cross bar 2, central connecting bolts 302 are respectively fixedly connected at two ends of the central web member 3, triangular connecting slots 401 are respectively arranged at the joints of the triangular web members 4 and the bottom cross bar 1 and the upper cross bar 2, triangular connecting bolts 402 are respectively connected at two ends of the triangular web members 4, and the triangular connecting bolts 402 are respectively connected with the triangular connecting slots 401.

In this embodiment, through setting up central connection bolt 302, central connection slot 301, triangle connection bolt 402, triangle connection slot 401's connected department through setting up at last horizontal pole 2, bottom rail 1, center web member 3, triangle web member 4, through having increased its structural stability of grafting mode on the welding basis, avoid causing local stress concentration because of intensive welding easily because of the junction, and then cause the influence to the holistic structural strength of truss, lead to the holistic structural strength reduction of truss girder.

Example 2

As shown in fig. 1-3, on the basis of embodiment 1, the present utility model provides a technical solution: preferably, the fixed mounting in position that the top of going up horizontal pole 2 is in the top of center web member 3 has reinforcing plate 5, make up horizontal pole 2 through setting up reinforcing plate 5, strengthen the intensity of going up horizontal pole 2, avoid because of the junction is easy to cause local stress concentration because of intensive welding, and then to the holistic structural strength of truss leads to the fact the influence, lead to the holistic structural strength reduction of truss girder, the junction outer wall of bottom rail 1 and center web member 3 is provided with two reinforcing splint 6, two reinforcing splint 6 set up respectively at the front and the reverse side of bottom rail 1 and center web member 3 junction, increase truss girder holistic structural strength through setting up reinforcing splint 6 centre gripping, reinforcing splint 6 divide into two splint 601, articulated post 602, two fixing bolt 603, the bottom of two splint 601 is articulated through articulated post 602, two fixing bolt 603 run through two splint 601's both sides and threaded connection respectively, conveniently install fixing to reinforcing splint 6, fixing bolt 603 is in splint 601 equal threaded connection has fixing nut 604, can avoid fixing nut 604 through setting up fixing nut 603, it is not hard up with the setting up the stability, in order to increase structural stability 1 and 606, the clearance hole 605 is in order to prevent that the limit joint hole 605 from having the fixed nut is fixed with the inside limit joint hole 605, the clearance hole is fixed with the setting up the limit joint hole 605.

In this embodiment, the mode of clamping the reinforcing clamping plates 6 is set at the joint of the central web member 3 and the bottom rail 1, so that the overall structural strength of the truss girder is increased, and the clamping stability of the truss girder is increased through the cooperation of the fixing bolts 603, the limiting holes 605 and the fixing bolts 606.

The working principle of the large-span truss is specifically described below.

As shown in fig. 1-3, when in use, the upper cross rod 2 and the lower cross rod 1 are vertically arranged, the central connecting bolt 302 corresponds to the central connecting slot 301 and the triangular connecting bolt 402 corresponds to the triangular connecting slot 401 one by one, splicing and assembling are carried out, further fixing is carried out on the basis through welding, the joint of the lower cross rod 1 and the central web member 3 is clamped by the two clamping plates 601, the joint is fixed through the cooperation of the fixing nut 604 and the fixing bolt 603, and the fixing bolt 606 is inserted into the limiting hole 605 to fix the fixing nut 604 so as to avoid looseness.

Claims

1. A large span truss comprising a bottom rail (1), characterized in that: the utility model discloses a triangle web member, including bottom rail (1), center web member (3), triangle web member (4), triangle web member (402) are connected with bottom rail (1) and go up between bottom rail (1) and last horizontal pole (2) fixedly connected with triangle web member (4), be triangle slope setting, bottom rail (1), center web member (3) and bottom rail (1) junction punishment do not have center connection slot (301), center web member (3) both ends are fixedly connected with center connection bolt (302) respectively, and center connection bolt (302) are pegged graft with center connection slot (301), triangle web member (4) all offer triangle connection slot (401) with bottom rail (1) and last horizontal pole (2) junction, triangle web member (4) both ends fixedly connected with triangle connection bolt (402) are pegged graft with triangle connection slot (401).

2. A long span truss as defined in claim 1 wherein: the top of the upper cross rod (2) is fixedly provided with a reinforcing plate (5) at a position above the central web member (3).

3. A long span truss as defined in claim 2 wherein: the outer wall of the joint of the lower cross rod (1) and the central web member (3) is provided with two reinforcing clamping plates (6), and the two reinforcing clamping plates (6) are respectively arranged on the front surface and the back surface of the joint of the lower cross rod (1) and the central web member (3).

4. A long span truss according to claim 3 wherein: the reinforced clamping plate (6) is divided into two clamping plates (601), a hinged column (602) and two fixing bolts (603), the bottoms of the two clamping plates (601) are hinged through the hinged column (602), and the two fixing bolts (603) penetrate through two sides of the two clamping plates (601) respectively and are in threaded connection.

5. The long span truss of claim 4 wherein: the fixing bolts (603) are arranged on the clamping plates (601) and are connected with fixing nuts (604) in a threaded mode.

6. The long span truss of claim 5 wherein: limiting holes (605) are formed in two sides of the contact surface of the clamping plate (601) on the fixing nut (604), and fixing bolts (606) are inserted into the inner walls of the limiting holes (605).