CN212053215U

CN212053215U - Structure for lengthening raw bamboo

Info

Publication number: CN212053215U
Application number: CN202020449768.8U
Authority: CN
Inventors: 申聪; 魏洋; 陈思; 赵康; 李国芬; 董峰辉
Original assignee: Nanjing Forestry University
Current assignee: Nanjing Forestry University
Priority date: 2020-03-31
Filing date: 2020-03-31
Publication date: 2020-12-01
Anticipated expiration: 2030-03-31

Abstract

A structure for lengthening raw bamboos comprises reference raw bamboos, lengthened raw bamboos, embedded raw bamboos and cotters, wherein the reference raw bamboos and the lengthened raw bamboos are connected in sequence by penetrating and fixing the embedded raw bamboos inside the reference raw bamboos, the connecting end faces of the reference raw bamboos and the lengthened raw bamboos are tightly attached to each other, more than 1 cotters are respectively arranged on two sides of the connecting end faces, the cotters penetrate through the diameter directions of the reference raw bamboos, the lengthened raw bamboos and the embedded raw bamboos, and gaps between the inner walls of the reference raw bamboos and the lengthened raw bamboos and the outer walls of the embedded raw bamboos are filled with. The utility model discloses a diameter less former bamboo realizes that many big former bamboos of diameter dock each other long, connects conveniently, and the outward appearance is pleasing to the eye, and connection cost is low, has improved the adaptability of building structure to the big length demand of former bamboo greatly.

Description

Structure for lengthening raw bamboo

Technical Field

The utility model relates to a former bamboo structure, concretely relates to structure that former bamboo dock to prolong belongs to the civil engineering field.

Background

The bamboo material has the characteristics of short growth period, high yield, high strength, environmental protection, reproducibility and the like, the bamboo structure has good heat insulation performance, and has important significance for building energy conservation and green development, the original bamboo structure is used as a modern building material to meet the requirement of sustainable development, and the original bamboo structure is widely applied to building structures all the time.

The raw bamboo is usually lengthened due to insufficient length in the using process. But the connection is binded directly with adjacent former bamboo to current extension mode is many, and this makes the former bamboo axis of adjacent connection not on a straight line, and power transmission effect is poor, and produced the unfavorable result of eccentric atress, and the connecting elements wholeness is poor, in addition, the mutual dislocation overlap joint of binding the connection has undoubtedly influenced the pleasing to the eye outward appearance of former bamboo structure.

The existing original bamboo lengthening method mainly comprises a ring buckle type lengthening method, a bamboo rod lengthening method with a threaded sleeve embedded part and the like. For example, chinese patent CN208748831U discloses a ring-buckled bamboo rod lengthening structure, which enhances the integrity of the structure, but the shear strength and bending strength of the joint are reduced by one time, and the joint is easily damaged, and the manufacturing steps are complicated and complicated; for another example, chinese patent CN208748830U discloses a bamboo rod lengthening structure with a threaded sleeve embedded part, which realizes the lengthening of raw bamboos to a greater extent, and the axes of two raw bamboos are in a line, so as to better transmit force, but lack bolts, and have insufficient pressure resistance, tensile resistance and torsion resistance, and the manufacturing is complex and the manufacturing cost is high.

Disclosure of Invention

The utility model aims at providing a structure that former bamboo connects length, many former bamboos realize connecting length each other with the relatively less former bamboo of diameter and connect to strengthen the connection through the vertically cotter bolt, make the former bamboo of benchmark of connecting, connect the central line of the former bamboo of length on same straight line, biography power that can be better realizes the demand that tensile, resistance to compression, bending resistance bore.

The technical scheme of the utility model: a structure for lengthening raw bamboos is characterized by comprising reference raw bamboos, lengthening raw bamboos, embedded raw bamboos and cotters, wherein the reference raw bamboos and the lengthening raw bamboos are connected in sequence by penetrating and fixing the embedded raw bamboos inside the reference raw bamboos, the connecting end faces of the reference raw bamboos and the lengthening raw bamboos are tightly attached, the cross sections, the shapes and the center lines of the connecting end faces are consistent, so that the center lines of the connected reference raw bamboos and the lengthening raw bamboos are on the same straight line, better force transmission can be realized, the requirements of tensile strength, compression strength and bending strength can be met, more than 1 cotters are arranged on two sides of each connecting end face respectively, the cotters penetrate through the diameter directions of the reference raw bamboos, the lengthening raw bamboos and the embedded raw bamboos, and gaps between the inner walls of the reference raw bamboos and the outer walls.

The gap between the inner wall of the reference raw bamboo and the extension raw bamboo and the outer wall of the embedded raw bamboo is not more than 2 mm.

The pin bolt is made of bamboo, wood, metal and plastic materials, is preferably made of bamboo and wood, and is provided with anchoring structures at two ends according to requirements.

The lengths of the embedded original bamboos extending into the reference original bamboos and the extension original bamboos are equal to each other and are not less than 100mm respectively.

The connection end face of the reference raw bamboo and the extension raw bamboo is perpendicular to the axis direction of the connection position.

The axial directions of more than 1 pin bolt are along the same or staggered diameter directions, and the diameter directions which are staggered with each other are preferably adopted.

The adhesive is one of epoxy resin, vinyl resin and polyurethane resin, and is applied or filled into the gap between the inner wall of the reference raw bamboo and the extension raw bamboo and the outer wall of the embedded raw bamboo.

The pin can be omitted as desired.

The utility model discloses a diameter less former bamboo realizes that the great former bamboo of many diameters dock each other and grows, connects conveniently, and the outward appearance is pleasing to the eye, and connection cost is low, has improved building structure greatly to the adaptability of former bamboo major length demand, compares with the structure that other former bamboos lengthened, has following advantage:

(1) the central lines of the connected original bamboos are on the same straight line, so that better force transmission can be realized, and the reduction of the tensile, compressive and bending bearing capacity of the connecting structure is reduced.

(2) The original bamboos connected adjacently are integrated by the pin bolt, the adhesive and a plurality of measures of the embedded original bamboos, so that the structural integrity is guaranteed.

(3) The connection operation is simple, the manufacture is convenient, and the connection cost is low.

(4) Because the connecting end faces of the adjacent lengthened raw bamboos are tightly attached, the sizes, the shapes and the central lines of the cross sections of the connecting end faces are consistent with each other, the connecting position has no staggered platform, and the appearance is attractive.

Description of the drawings:

FIG. 1 is a schematic perspective view of an elongated bamboo structure;

FIG. 2 is a schematic perspective detail view of an original bamboo elongated structure;

FIG. 3 is a schematic cross-sectional view of a raw bamboo elongated structural configuration;

FIG. 4 is a schematic perspective view of a bamboo joint without a pin;

FIG. 5 is a schematic perspective detail view of a bamboo extension construction with the pin omitted;

FIG. 6 is a schematic cross-sectional view of a bamboo extension construction with the pin omitted;

FIG. 7 is a schematic view of an embedded raw bamboo of a raw bamboo-lengthened structural configuration;

fig. 8 is a schematic illustration of a pin of an original bamboo lengthening structure configuration.

In the attached drawings, 1 is a reference raw bamboo, 2 is a lengthened raw bamboo, 3 is an embedded raw bamboo, 4 is a pin bolt, and 5 is an adhesive.

Detailed Description

For a clearer understanding of the technical features, objects, and effects of the present invention, the present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

As shown in the attached drawings, the structure of the extension of the raw bamboos is characterized by comprising a reference raw bamboo 1, an extension raw bamboo 2, an embedded raw bamboo 3 and a pin bolt 4, wherein the reference raw bamboo 1 and the extension raw bamboo 2 are sequentially connected by penetrating and fixing the embedded raw bamboo 3 in the reference raw bamboo 1 and the extension raw bamboo 2, the connecting end surfaces of the reference raw bamboo 1 and the extension raw bamboo 2 are tightly attached, the section size, the shape and the central line of the connecting end surfaces are consistent with each other, so that the central lines of the connected reference raw bamboo 1 and the extension raw bamboo 2 are on the same straight line, the power that can be better passes, realizes the demand that tensile, resistance to compression, bending resistance bore, and the both sides of connecting the terminal surface respectively set up 1 above cotter 4, and cotter 4 runs through in the diameter direction of former bamboo 1 of benchmark, extension former bamboo 2 and embedded former bamboo 3, and the clearance between the outer wall of former bamboo 3 of the inner wall of former bamboo 1 of benchmark and extension former bamboo 2 is full of adhesive 5.

The gap between the inner walls of the reference raw bamboo 1 and the extension raw bamboo 2 and the outer wall of the embedded raw bamboo 3 is not more than 2 mm.

The pin 4 is made of bamboo, wood, metal and plastic materials, is preferably made of bamboo and wood, and is provided with anchoring structures at two ends according to requirements.

The lengths of the embedded raw bamboos 3 extending into the reference raw bamboos 1 and the extension raw bamboos 2 are equal to each other and are not less than 100mm respectively.

The connection end surface of the reference raw bamboo 1 and the extension raw bamboo 2 is vertical to the axis direction of the connection position.

The axial direction of 1 or more pins 4 is along the same or staggered diameter direction, and the diameter directions staggered with each other are preferably adopted.

The adhesive 5 is one of epoxy resin, vinyl resin and polyurethane resin, and is coated or poured into the gap between the inner walls of the reference raw bamboo 1 and the extension raw bamboo 2 and the outer wall of the embedded raw bamboo 3.

The pin 4 may be omitted as necessary.

Claims

1. The utility model provides a structure that raw bamboo was lengthened, its characterized in that includes benchmark raw bamboo (1), extension raw bamboo (2), embedded raw bamboo (3), cotter (4), benchmark raw bamboo (1) realizes the extension in proper order of the two with extension raw bamboo (2) through penetrating and fixed embedded raw bamboo (3) inside it and links to each other, benchmark raw bamboo (1) closely pastes closely with the connection terminal surface of extension raw bamboo (2), the cross-sectional size, shape and the central line of connecting the terminal surface are unanimous each other, and the both sides of connecting the terminal surface respectively set up more than 1 cotter (4), cotter (4) run through in the diameter direction of benchmark raw bamboo (1), extension raw bamboo (2) and embedded raw bamboo (3), the clearance adhesive (5) between the outer wall of embedded raw bamboo (3) is full of the inner wall of benchmark raw bamboo (1) and extension raw bamboo (2).

2. A raw bamboo extension structure as claimed in claim 1, wherein a gap between the inner walls of the reference raw bamboo (1) and the extension raw bamboo (2) and the outer wall of the embedded raw bamboo (3) is not more than 2 mm.

3. A structure of raw bamboo extension as claimed in claim 1, characterized in that the cotter (4) is made of bamboo, wood, metal, plastic material.

4. A raw bamboo extension structure as claimed in claim 1, wherein respective lengths of the embedded raw bamboo (3) extending into the insides of the reference raw bamboo (1) and the extension raw bamboo (2) are equal to each other and are not less than 100mm, respectively.

5. A raw bamboo extension structure as claimed in claim 1, wherein the connection end surface of the reference raw bamboo (1) and the extension raw bamboo (2) is perpendicular to the axial direction of the connection.

6. A raw bamboo elongation structure as claimed in claim 1, wherein the axial direction of more than 1 pin (4) is along the same or staggered diameter direction.