CN210457212U

CN210457212U - Node structure suitable for rod piece splicing of crane truss

Info

Publication number: CN210457212U
Application number: CN201921102415.4U
Authority: CN
Inventors: 郭志康; 李伟; 王海峰; 李向阳
Original assignee: Kerun Electro Mechanical Engineering Co ltd
Current assignee: Kerun Electro Mechanical Engineering Co ltd
Priority date: 2019-07-15
Filing date: 2019-07-15
Publication date: 2020-05-05
Anticipated expiration: 2029-07-15

Abstract

The utility model discloses a node structure suitable for hoist truss carries out member concatenation belongs to hoisting machinery technical field. The node structure is embedded in a rod piece at a needed node of the crane truss through a node plate; and the intersection rod pieces at the required nodes are provided with caulking grooves for embedding the node plates. The utility model discloses utilize the gusset plate to carry out the node structure of member concatenation as the crane truss, have simple structure, technology simplification, be convenient for preparation, safe and reliable, the advantage that economy is suitable for.

Description

Node structure suitable for rod piece splicing of crane truss

Technical Field

The utility model belongs to the technical field of hoisting machinery, more specifically say and relate to a node structure suitable for the hoist truss carries out member concatenation.

Background

Most cranes form a truss structure by steel pipes, and have the advantages of simple structure, light weight, small wind load and high lifting capacity, and the cranes with the steel pipe truss structure are widely applied to engineering construction and construction in the fields of thermal power, hydropower, metallurgy, buildings, mines and the like. The truss of the crane consists of chord members and web members, the joints of adjacent rod members are called nodes, and a large number of nodes exist in the truss of the crane. The chord members are used as main tension and compression bar members in the truss, and the corresponding chord member node structures are important characteristics of the crane truss. According to the tension or compression characteristics of the chord member, the traditional chord member node structure is designed into a multi-pipe joint form of a forging member or a steel casting member (see fig. 1-11), and the node structure in the multi-pipe joint form has the following defects: the number and the angle of the rod pieces which are mutually converged at each node are different, the corresponding required multi-pipe joint is basically a structure with one node, and the multi-pipe joint has the defects of complex structure and manufacturing process, long manufacturing period, easy occurrence of cracks and difficult guarantee of manufacturing precision; in the process of connecting the rod pieces, all the connections of the multi-pipe joints and the steel pipes are required to be I-type welding seams, and the welding process is high in requirement, high in operation difficulty and poor in use safety; the problem of high cost exists no matter how the multi-tube joint is made by adopting a forging piece or a steel casting piece.

Disclosure of Invention

The purpose of the utility model is just to the weak point that exists among the above-mentioned prior art and provide a node structure that is applicable to the hoist truss and carries out the member concatenation. The utility model discloses utilize the gusset plate to carry out the node structure of member concatenation as the crane truss, have simple structure, technology simplification, be convenient for preparation, safe and reliable, the advantage that economy is suitable for.

The purpose of the utility model can be realized by the following technical measures:

the utility model discloses a node structure suitable for the crane truss to splice the rod pieces, which is a node structure that the node plates are embedded in the rod pieces at the nodes required by the crane truss; and the intersection rod pieces at the required nodes are provided with caulking grooves for embedding the node plates.

The utility model discloses in the width and the gusset plate thickness phase-match of caulking groove, the degree of depth of caulking groove and the profile border phase-match of gusset plate (make things convenient for the gusset plate to insert the caulking groove smoothly).

The utility model discloses in wear to adorn the hole has been seted up at the middle part of gusset plate, and the profile of gusset plate extends the arch along the caulking groove depth direction that corresponds the member (the gusset plate inserts the caulking groove and need have certain length, and general length is about 20mm, guarantees the welding quality of gusset plate and steel pipe; according to concrete in service behavior, if there is the member to need run through the gusset plate, then has seted up in the middle part of gusset plate and has worn to adorn the hole).

The utility model discloses in the middle part of gusset does not set up and wears the dress hole, and the profile of gusset extends the arch along the caulking groove depth direction that corresponds the member (the gusset inserts the caulking groove and need have certain length, and general length is about 20mm, guarantees the welding quality of gusset and steel pipe).

The design principle of the utility model is as follows:

the utility model discloses utilize the gusset plate to carry out the node structure of member concatenation as the crane truss, have simple structure, technology simplification, be convenient for preparation, safe and reliable, the advantage that economy is suitable for. Furthermore, compared with the traditional node structure in the form of multi-pipe joints, the utility model utilizes the node plate to replace the traditional forge piece joint or steel casting joint, thereby greatly simplifying the node structure and simplifying the process manufacture; the utility model can be used only by arranging the caulking groove in the corresponding rod piece and inserting the gusset plate into the caulking groove for welding, and is convenient to use; in addition, the butt joint between traditional forging joint or steel casting joint and the member is I type welding seam, and welding process requires that height, the operation degree of difficulty are big, the safety in utilization is poor, the cost is high, and the utility model provides a welding seam atress between gusset plate and the caulking groove is for receiving simply to cut, and the requirement of mechanical properties just can be satisfied to the combination welding seam, and welding is simple, the welding seam quality is easily guaranteed, safe and reliable, economical and practical.

The utility model has the advantages of as follows:

the utility model discloses utilize the gusset plate to carry out the node structure of member concatenation as the crane truss, have simple structure, technology simplification, be convenient for preparation, safe and reliable, the advantage that economy is suitable for.

Will the utility model discloses the wide application is obvious in effect on the hoist of pipe truss structure, and the concrete embodiment is as follows:

in a jib crane (such as a crawler crane) with a main arm of a pipe truss structure, the pipe joint of a main chord has about 50 positions, the average multi-pipe joint of each forged piece or steel casting piece is 2600 yuan, the average welding and inspection cost is 900 yuan, the total cost of 3500 yuan/position and 50 yuan is 17.5 yuan, the pipe joint is changed into a node plate type structure, the average manufacturing cost of each node plate (the material cost and the cutting cost of steel plates only, the average 12 kg/block, 9000 yuan/ton and the reduced 108 yuan/block) is about 108 yuan, the inspection cost of 100 yuan/position, the total 208 yuan/position and the total cost of 50 nodes plates are 1.04 ten thousand yuan, the corresponding weight increase of the length extension of a steel pipe after the node plates are used, the weight of an important main chord node steel cake is about 3 tons, the manufacturing cost is 2.4 yuan, the actual total cost of the node plate type structure is 3.44 ten thousand yuan, 14.06 yuan/station is saved, the cost is only 20% of the joint of the forged piece or the steel piece, the economic benefit is considerable; meanwhile, the method is safe, reliable, scientific and practical, saves purchasing and manufacturing cost, obviously improves manufacturing efficiency, has great significance for manufacturing the pipe truss structure crane, and has obvious social benefit and economic benefit.

Drawings

Fig. 1 is a schematic view of connection at a node of a conventional main chord.

Fig. 2 is a sectional view a-a of fig. 1.

Fig. 3 is a top view of fig. 1.

FIG. 4 is a schematic view of a conventional main chord node representative structure one (piece 1' -four-pipe joint I).

Fig. 5 is a longitudinal view of fig. 4.

Fig. 6 is a cross-sectional view of fig. 4.

FIG. 7 is a schematic diagram of a conventional main chord member joint representative structure two (part 2' -four-pipe joint II).

FIG. 8 is a schematic view of a conventional main chord member node representing structure three (piece 3' -four-pipe joint III).

FIG. 9 is a schematic representation of a conventional main chord node representing structure four (piece 4' -a seven-pipe joint).

FIG. 10 is a schematic view of a conventional main chord node representative of structure five (piece 5' -five pipe joint).

FIG. 11 is a schematic representation of a conventional main chord node representing structure six (piece 6' -six pipe joint).

Part numbers in fig. 1 to 11: 1 '-four-pipe joint I, 2' -four-pipe joint II, 3 '-four-pipe joint III, 4' -seven-pipe joint, 5 '-five-pipe joint and 6' -six-pipe joint.

Fig. 12 is a schematic diagram of the node structure of the present invention.

Fig. 13 is a sectional view B-B of fig. 12.

Fig. 14 is a top view of fig. 12.

FIG. 15 is a schematic representation of gusset plate representative structure one (item 1-gusset plate I).

FIG. 16 is a schematic view of gusset plate representative structure two (piece 2-gusset plate II).

FIG. 17 is a schematic representation of gusset plate representative structure III (piece 3-gusset plate III).

FIG. 18 is a schematic view of gusset plate representative structure four (piece 4-gusset plate IV).

FIG. 19 is a schematic view of gusset plate representative structure five (piece 5-gusset plate V).

FIG. 20 is a schematic representation of gusset representation structure six (piece 6-gusset VI).

Part numbers in fig. 12 to 20: part 1-gusset plate I, part 2-gusset plate II, part 3-gusset plate III, part 4-gusset plate IV, part 5-gusset plate V, part 6-gusset plate VI.

Detailed Description

The present invention will be further described with reference to the accompanying drawings:

as shown in fig. 12 to 20, the node structure suitable for splicing the rods of the crane truss of the present invention is a node structure in which the node plates are embedded in the rods at the nodes required by the crane truss; and the intersection rod pieces at the required nodes are provided with caulking grooves for embedding the node plates.

The utility model discloses a concrete in service behavior as follows:

use at the more concentrated or complicated member node of atress as required the utility model discloses a node structure carries out the high-speed joint: firstly, an embedding groove is formed in the end head of each rod piece at the joint of the nodes; selecting whether the node plate is provided with a penetrating hole or not according to whether a rod piece penetrating through the node plate exists or not; and inserting the node plates into the embedding grooves, and performing combined welding. If the appearance needs to be further beautified, the redundant parts can be designed into different shapes such as chamfers, fillets and the like along the outer contour of the gusset plate.

Claims

1. The utility model provides a node structure suitable for hoist truss carries out member concatenation which characterized in that: the node structure is embedded in a rod piece at a needed node of a crane truss through a node plate; and the intersection rod pieces at the required nodes are provided with caulking grooves for embedding the node plates.

2. The node structure suitable for rod splicing of a crane truss according to claim 1, wherein: the width of caulking groove and the thickness phase-match of node board, the degree of depth of caulking groove and the profile border phase-match of node board.

3. The node structure suitable for rod splicing of a crane truss according to claim 1, wherein: the middle part of the gusset plate is provided with a penetrating hole, and the outline of the gusset plate extends and protrudes along the depth direction of the caulking groove of the corresponding rod piece.

4. The node structure suitable for rod splicing of a crane truss according to claim 1, wherein: and no penetrating hole is formed in the middle of the gusset plate, and the profile of the gusset plate extends and protrudes along the depth direction of the caulking groove of the corresponding rod piece.