CN108980162A - A kind of aluminium alloy extrusions joinery and its construction reinforced based on chemical linking agent - Google Patents

Abstract

The invention discloses a mortise and tenon structure of an aluminum alloy profile reinforced by a chemical connecting agent, comprising: a mortise body, one side of which is integrally formed with a mortise head; Both the body and the shank body are made of aluminum alloy and integrally formed, including: an outer frame; a horizontal support plate; a vertical support plate, which is arranged perpendicular to the horizontal support plate, and is connected to the outer frame and the The horizontal support plate forms a cross-section of a Tian-shaped structure; the tenon and the mortise are arranged correspondingly, and the tenon is engaged in the mortise, and the tenon and the mortise are bonded by a chemical bonding agent fixed.

Description

A mortise and tenon structure of aluminum alloy profiles reinforced by chemical connectors

technical field

The invention belongs to the technical field of connection of aluminum alloy profiles for vehicle bodies, and in particular relates to a mortise and tenon structure of aluminum alloy profiles reinforced by a chemical connecting agent.

Background technique

"Energy saving, safety, and environmental protection" is the development theme of modern industry, and new energy vehicles have become an inevitable trend of development. In order to reduce energy consumption and improve performance of new energy vehicles, the lightweight design of the body bears the brunt. New materials subvert the traditional steel body. Aluminum alloy materials have been widely used in new energy vehicles due to their advantages such as high specific strength and strong plasticity.

Aluminum alloy profiles can be used to carry the body frame. At present, the connection methods of aluminum alloy profiles mainly include mechanical fixation such as welding, riveting and bolts, and bonding is also in the research stage. The thermal conductivity of aluminum alloy is high, and heating will destroy the properties of aluminum alloy material. Defects are easy to exist in the weld and the quality increases slightly; mechanical connections have large defects, low strength and obvious increase in quality; The adhesive used connects the surfaces through adhesion and cohesion, which comes from the force between molecules, and its connection performance needs to be verified. Referring to the connection method of columns, beams and purlins in ancient Chinese buildings, the joints between each component are matched with mortise and tenon joints to form a flexible frame. Not only can it withstand larger loads (better strength), but also allow a certain amount of deformation (higher stiffness). Under seismic loads, it can offset a certain amount of seismic energy (absorb a certain amount of energy) through deformation to reduce the seismic response of the structure.

The body frame needs to have load-carrying capacity; at the same time, the rigidity is high; and in order to ensure the safety of the body when it collides, the body frame is required to have a certain crash resistance, that is, energy-absorbing characteristics. The mortise and tenon structure can meet the basic performance requirements of the body frame, so the mortise and tenon connection is used in the new energy body frame. In order to ensure the reliability of the connection, on the basis of the mortise and tenon connection, a chemical connection agent is used to form a chemical bond to strengthen the connection performance.

Contents of the invention

The present invention has designed and developed a mortise and tenon structure of aluminum alloy profiles reinforced by chemical connectors. The purpose of the invention is to effectively connect the aluminum alloy profiles in the horizontal direction and the vertical direction. The connection structure can absorb part of the energy. Due to the remarkable energy absorption characteristics of the aluminum alloy profile mortise and tenon connection structure, the chemical connection agent is used to strengthen the mortise and tenon structure, which improves the mechanical properties of the structure such as strength and stiffness.

The technical scheme provided by the invention is:

A mortise and tenon structure of aluminum alloy profiles reinforced by chemical connectors, including:

Tenon body, one side of which is integrally formed with a tenon;

The mortise body has a mortise on one side;

Wherein, the mortise body and the mortise body are made of aluminum alloy and integrally formed, including:

Outer frame;

horizontal support plate;

a vertical support plate, which is arranged perpendicular to the horizontal support plate, and forms a cross-section of a cross-section with the outer frame and the horizontal support plate; and

The mortise is arranged corresponding to the mortise, and the mortise is engaged in the mortise, and the mortise and the mortise are bonded and fixed by a chemical bonding agent.

Preferably, the tenons include:

a first connecting plate, which is an extension of one side of the horizontal support plate and the vertical support plate;

The second connecting plate is an extension of one side of the horizontal supporting plate and the vertical supporting plate, and is arranged on the same side as the first connecting plate;

Wherein, the first connecting plate and the second connecting plate are arranged symmetrically about the center.

Preferably, the mortise comprises:

a first groove, which includes a concave portion vertically connected to the inner side of the horizontal support plate and the vertical support plate;

The second groove includes a concave portion vertically connected to the inner side of the horizontal support plate and the vertical support plate, and is arranged on the same side as the first groove;

Wherein, the first groove and the second groove are arranged symmetrically to the center; and

The first connecting plate is arranged corresponding to the first groove, the first connecting plate is engaged in the first groove, and the second connecting plate is arranged corresponding to the second groove, so The second connecting plate is engaged in the second groove.

Preferably, one side of the tenon body is recessed inwardly to form a tenon consisting of a first concave portion and a first protruding portion.

Preferably, the mortise comprises:

The second protrusion is an extension of one side of the shank body;

The third protruding part is an extension part on one side of the shank body, and is spaced apart from the same side of the second protruding part, between the second protruding part and the third protruding part forming a second recess;

Wherein, the first protrusion is arranged corresponding to the second depression, and the first protrusion is engaged in the second depression; and

The second protruding portion is disposed corresponding to the first concave portion, and the second protruding portion is engaged in the first concave portion.

Preferably, the aluminum alloy is 7020 type aluminum alloy.

Preferably, the chemical linking agent comprises a hydrolyzed aluminum compound, a base or a basic aluminate.

Preferably, the chemical linking agent is applied inside the mortise.

Compared with the prior art, the present invention has the beneficial effects:

1. The mortise and tenon structure of aluminum alloy profiles can realize horizontal and vertical connections, and can be applied to the joint of the car body load-carrying frame to realize the effective assembly of the aluminum alloy profile frame. Because the mortise and tenon structure can bear large loads, and allows It produces certain deformation, can absorb energy, and can bear the load of complex working conditions;

2. Between the joints of the mortise and tenon structure, chemical bonding agents are used to reinforce the mortise and tenon structure, which can avoid the phenomenon of the mortise and tenon structure itself, and integrate the two joints of the mortise and tenon structure, which is conducive to the transmission of force;

3. The mortise and tenon structure is used to realize the assembly of aluminum alloy profiles, and the connection is reinforced by chemical bonding agents. This connection method has high strength and rigidity, significant energy absorption, and light weight, and can be widely used in the automotive industry.

Description of drawings

Fig. 1 is a schematic diagram of the overall structure of the horizontal mortise-and-tenon structure of aluminum alloy profiles reinforced by chemical bonding agents according to the present invention.

Figure 2 is a schematic cross-sectional view of a horizontal mortise-and-tenon structure connection of aluminum alloy profiles reinforced with a chemical bonding agent.

Fig. 3 is a schematic diagram of the horizontal mortise and tenon structure according to the present invention and the coating position of the chemical joint agent.

Fig. 4 is a schematic cross-sectional view of the horizontal mortise and tenon structure according to the present invention.

Fig. 5 is a schematic horizontal cross-sectional view of the horizontal mortise and tenon structure according to the present invention.

Fig. 6 is a schematic diagram of the horizontal mortise and tenon structure mortise and the application of chemical connecting agent according to the present invention.

Fig. 7 is a schematic cross-sectional view of a horizontal mortise and tenon structure mortise according to the present invention.

Fig. 8 is a schematic horizontal cross-sectional view of a horizontal mortise and tenon structure mortise according to the present invention.

Fig. 9 is a schematic diagram of the overall structure of the vertical mortise and tenon structure of the aluminum alloy profiles reinforced by the chemical bonding agent according to the present invention.

Figure 10 is a schematic cross-sectional view of a vertical mortise-and-tenon structure connection of aluminum alloy profiles reinforced with a chemical bonding agent.

Fig. 11 is a schematic diagram of the application of the vertical mortise and tenon structure mortise and tenon and the chemical connection agent according to the present invention.

Fig. 12 is a schematic horizontal cross-sectional view of the vertical mortise and tenon structure according to the present invention.

Fig. 13 is a schematic diagram of the application of the vertical mortise and tenon structure mortise and chemical connection agent according to the present invention.

Fig. 14 is a schematic horizontal cross-sectional view of a horizontal mortise and tenon structure mortise according to the present invention.

Detailed ways

The present invention will be further described in detail below in conjunction with the accompanying drawings, so that those skilled in the art can implement it with reference to the description.

The invention provides a mortise and tenon structure of aluminum alloy profiles reinforced by a chemical connecting agent, the main structure of which includes a mortise body and a mortise body; wherein, one side of the mortise body is integrally formed with a mortise, and one side of the mortise body is provided with a mortise , the mortise body and the mortise body are made of aluminum alloy and are integrally formed. Both the mortise body and the mortise body include: a square outer frame, a horizontal support plate, and a vertical support plate; the vertical support plate is perpendicular to the horizontal support plate Set, and form a Tian-shaped structure cross-section with the outer frame and the horizontal support plate, the tenon and the mortise are arranged correspondingly, and the tenon is snapped into the mortise, and the tenon and the mortise are bonded and fixed by chemical bonding agent.

Example 1

As shown in Figures 1 to 8, the present invention provides a mortise and tenon structure of aluminum alloy profiles reinforced by a chemical bonding agent. One side of 110 is integrally formed with a mortise, and one side of the mortise body 130 is provided with a mortise; wherein, the mortise body 110 and the mortise body 130 are made of aluminum alloy, and are integrally formed, and both the mortise body 110 and the mortise body 130 include : outer frame, horizontal support plate 140, vertical support plate 150; the vertical support plate 150 and the horizontal support plate 140 are vertically arranged, and form a cross-section of a Tian-shaped structure with the outer frame and the horizontal support plate 140, and the mortise corresponds to the mortise set, and the tenon is engaged in the mortise, and the tenon and the mortise are bonded and fixed by chemical bonding agent 120 .

In another embodiment, the tenon includes a first connecting plate 111a and a second connecting plate 111b; wherein, the first connecting plate 111a is an extension of one side of the horizontal supporting plate 140 and the vertical supporting plate 150, and the second connecting plate 111b is an extension of one side of the horizontal support plate 140 and the vertical support plate 150, the second connecting plate 111b is arranged on the same side as the first connecting plate 111a, and the first connecting plate 111a and the second connecting plate 111b are arranged symmetrically about the center.

The mortise includes a first groove 131a and a second groove 131b; wherein, the first groove 131a includes a concave portion vertically connected inside the horizontal support plate 140 and the vertical support plate 150, and the second groove 131b includes a horizontal support plate 140 In the concave portion vertically connected to the inner side of the vertical support plate 150 , the second groove 131b is arranged on the same side as the first groove 131a, and the first groove 131a and the second groove 131b are arranged symmetrically about the center.

Wherein, the first connecting plate 111a is arranged correspondingly to the first groove 131a, the first connecting plate 111a is engaged in the first groove 131a, the second connecting plate 111b is arranged correspondingly to the second groove 131b, and the second connecting plate 111b snapped into the second groove 131b.

As shown in Figures 1 to 3 and Figure 6, the chemical bonding agent 120 is coated on the inner surface of the mortise (as shown in Figure 3) and the outer surface of the mortise (as shown in Figure 6) where the mortise and tenon structures are in contact with each other, and the mortise is inserted into the mortise The connection in the mortise of the parts; the chemical bonding agent can decompose the oxide film on the surface of the aluminum alloy (including aluminum oxide, aluminate, etc.), and form new chemical bonds to generate new compounds, such as dual-tube energy compounds; in this paper In the embodiment, as a preference, the chemical linking agent 120 includes a hydrolyzed aluminum compound, an alkali or an alkali aluminate, which can remove aluminum surface oxides; it also includes an organic compound-based Groups, such as anchor groups, hydroxyl groups, etc., the organic compound groups can realize the connection of aluminum alloys, generate new compounds, etc.

Example 2

As shown in Figures 9 to 14, the present invention provides a mortise and tenon structure of aluminum alloy profiles reinforced by a chemical bonding agent. Its main structure includes a tenon body 210 and a mortise body 230, and one side of the tenon body 210 is integrally formed with a mortise. A mortise eye is provided on one side of the mortise body 230; wherein, both the mortise body 210 and the mortise body 230 are made of aluminum alloy, and are integrally formed, and both the mortise body 210 and the mortise body 230 include: an outer frame, a horizontal support plate 240. Vertical support plate 250; the vertical support plate 250 is vertically arranged with the horizontal support plate 240, and forms a cross-section of a cross-section with the outer frame and the horizontal support plate 240, and the tenon and the mortise are correspondingly arranged, and the tenon is engaged In the mortise, the tenon and the mortise are bonded and fixed by chemical bonding agent 220 .

In another embodiment, one side of the tenon body 210 is recessed inwardly to form a tenon composed of a first concave portion 212 and a first protruding portion 211 .

The mortise includes a second raised portion 231, a third raised portion 232, and a second recessed portion 233 formed between the second raised portion 231 and the third raised portion 232; the second raised portion 231 is the shank body 230 The extension on one side, the third protrusion 232 is an extension on one side of the shank body 230 , and the third protrusion 232 is spaced apart from the second protrusion 231 on the same side.

Wherein, the first protruding portion 211 is provided corresponding to the second recessed portion 233, the first protruding portion 211 is engaged in the second recessed portion 233, the second protruding portion 231 is provided corresponding to the first recessed portion 212, and the second The protruding portion 231 is engaged in the first concave portion 212 .

As shown in Figures 9 to 11, the chemical bonding agent 220 is coated on the inner surface of the mortise (as shown in Figure 11) and the outer surface of the mortise (as shown in Figure 12) where the mortise and tenon structure is in contact with each other, and the mortise is inserted into the mortise of the mortise. Eye connection, as shown in Figure 9 and Figure 10, the chemical bonding agent 220 can decompose the oxide film (including aluminum oxide, aluminate, etc.) on the surface of aluminum alloy, and form new chemical bonds to generate new compounds, such as double Capable compound; in this embodiment, as a preference, the chemical linker 220 includes hydrolyzed aluminum compound, alkali or basic aluminate, which can remove aluminum surface oxide ; It also includes organic compound groups, such as anchor groups, hydroxyl groups, etc., which can realize the connection of aluminum alloys and generate new compounds.

The invention draws lessons from the mortise and tenon structure of ancient Chinese buildings, and adopts the aluminum alloy profile mortise and tenon structure reinforced by a chemical connecting agent, which has high strength, good rigidity, strong deformation resistance, and good energy absorption characteristics; The unreliable defect of the existing aluminum alloy profile connection process can be applied to the connection of the light weight aluminum alloy automobile body load-carrying frame.

Taking 7020 aluminum alloy profile as an example, compare the performance parameters of aluminum profile mortise and tenon structure chemical connection and ordinary welding, as shown in Table 1, the performance parameter estimation comparison table of 7020 aluminum alloy base material and welded joint material.

Table 1 Comparison table of performance parameter estimation of 7020 aluminum alloy base metal and welded joint material

parameter aluminum alloy Aluminum Alloy Welded Joints Welding Reduction Ratio tensile strength 393 268 31.8% Elongation 16.6 4.5 72.9%

Test example 1

For Example 1, the bending and torsion working conditions, combined pressure-bending working conditions and bending-torsional working conditions are respectively applied, and the welded joints are applied to the butt welding example, as shown in Table 2. Comparing the relevant performance parameters, the comparison result data shows that, The performance of the aluminum alloy structure will be greatly reduced after welding.

Table 2 Estimation and comparison of performance parameters of chemical joining and butt welding of 7020 aluminum alloy profiles

parameter Mortise and tenon structure chemical connection Ordinary structural welding Bending stiffness (N/mm) 777.7 748.35 Torsional rigidity (N m/deg) 132.02 125.33

Test example 2

The combination of compression and bending conditions and the combination of bending and torsion conditions are respectively applied to Embodiment 2, as shown in Table 3, and the deformation indexes of the combination conditions are compared. Through the comparative analysis of the data, the welded joint is applied to the L-shaped joint welding example, and the structural performance of the aluminum alloy will be significantly reduced after welding.

Table 3 Estimation and comparison of performance parameters between chemical joining and L-shaped welding of 7020 aluminum alloy profiles

parameter Mortise and tenon structure chemical connection Ordinary structural welding The maximum displacement of the bending combined working condition (mm) 1.293 1.637 Maximum displacement under combined bending and torsion conditions (mm) 0.014 0.018

In the case of loading, the greater the deformation displacement of the combined working condition, the smaller the stiffness. Considering the combined working condition of compression and bending and the combined working condition of bending and torsion, the deformation displacement of ordinary joints is larger than that of chemically linked joints, so Reduced performance after soldering.

To sum up, the welded joint will reduce the overall deformation stiffness of the profile, which is not conducive to the bearing capacity of the body frame. Aluminum alloy has a high thermal conductivity and a large linear expansion coefficient, and it is prone to defects such as deformation, cracks, and pores during the welding process; due to the large decrease in the performance of the welded joint, it is easy to fracture, toughness, corrosion, and fatigue at the weld in practical applications destroy. Ordinary welded joints are more prone to failure under extreme conditions.

A single joint has significantly reduced the performance of the structure. Considering that there are many welded joints in the aluminum alloy body frame, there are as many as hundreds of welded parts interacting with each other, which has a greater impact on the performance of the vehicle.

The mortise and tenon structure of aluminum alloy profiles borrows from the connection of ancient solid wood. The effectiveness of the mortise and tenon connection, the chemical connection is used for the mortise and tenon structure, this chemical connection can be compared to one-piece processing, there is no welded joint, and there will be no damage to the position of the welded joint.

Although the embodiment of the present invention has been disclosed as above, it is not limited to the use listed in the specification and implementation, it can be applied to various fields suitable for the present invention, and it can be easily understood by those skilled in the art Therefore, the invention is not limited to the specific details and examples shown and described herein without departing from the general concept defined by the claims and their equivalents.

Claims (8)

1. a kind of aluminium alloy extrusions joinery and its construction reinforced based on chemical linking agent characterized by comprising

Tenon part ontology, one side are integrally formed setting tenon；

Mortise is arranged in fourth of the twelve Earthly Branches part ontology, one side；

Wherein, the tenon part ontology and the fourth of the twelve Earthly Branches part ontology are aluminum alloy material, and are integrally formed, comprising:

Outline border；

Horizontal supporting plate；

Vertical gripper shoe is vertically arranged with the horizontal supporting plate, and forms field with the outline border and the horizontal supporting plate Font structure cross section；And

The tenon is correspondingly arranged with the mortise, and the tenon is fastened in the mortise, the tenon and the mortise It is adhesively fixed by chemical linking agent.

2. the aluminium alloy extrusions joinery and its construction reinforced as described in claim 1 based on chemical linking agent, which is characterized in that described Tenon includes:

First connecting plate is the extension of the horizontal supporting plate and the vertical gripper shoe side；

Second connecting plate is the extension of the horizontal supporting plate and the vertical gripper shoe side, and is connected with described first The ipsilateral setting of fishplate bar；

Wherein, first connecting plate and the second connecting plate setting in a center of symmetry.

3. the aluminium alloy extrusions joinery and its construction reinforced as claimed in claim 2 based on chemical linking agent, which is characterized in that described Mortise includes:

First groove comprising the recessed portion that the horizontal supporting plate is connected with the vertical gripper shoe inner vertical；

Second groove comprising the recessed portion that the horizontal supporting plate is connected with the vertical gripper shoe inner vertical, and with institute State the ipsilateral setting of the first groove；

Wherein, first groove and the second groove setting in a center of symmetry；And

First connecting plate is correspondingly arranged with first groove, and first connecting plate is fastened in first groove, Second connecting plate is correspondingly arranged with second groove, and second connecting plate is fastened in second groove.

4. the aluminium alloy extrusions joinery and its construction reinforced as described in claim 1 based on chemical linking agent, which is characterized in that described Tenon part ontology side is recessed inwardly the tenon to be formed and be made of the first recessed portion and the first lug boss.

5. the aluminium alloy extrusions joinery and its construction reinforced as claimed in claim 4 based on chemical linking agent, which is characterized in that described Mortise includes:

Second lug boss is the extension of the fourth of the twelve Earthly Branches part ontology side；

Third protrusion portion is the extension of the fourth of the twelve Earthly Branches part ontology side, and is arranged with the ipsilateral interval of second lug boss, institute It states and forms the second recessed portion between the second lug boss and the third protrusion portion；

Wherein, first lug boss is correspondingly arranged with second recessed portion, and first lug boss is fastened on described second In recessed portion；And

Second lug boss is correspondingly arranged with first recessed portion, and second lug boss is fastened on first recessed portion It is interior.

6. the aluminium alloy extrusions joinery and its construction reinforced based on chemical linking agent as claimed in claim 3 or 5, which is characterized in that The aluminium alloy is 7020 type aluminium alloys.

7. the aluminium alloy extrusions joinery and its construction reinforced as claimed in claim 6 based on chemical linking agent, which is characterized in that described Chemical linking agent includes hydrolysis aluminium compound, alkali or basic aluminate.

8. the aluminium alloy extrusions joinery and its construction reinforced as claimed in claim 7 based on chemical linking agent, which is characterized in that described Chemical linking agent is applied on the inside of the mortise.