CN204988860U - Be applied to socket joint that welding heat influence is showing metal compression member - Google Patents
Be applied to socket joint that welding heat influence is showing metal compression member Download PDFInfo
- Publication number
- CN204988860U CN204988860U CN201520408836.5U CN201520408836U CN204988860U CN 204988860 U CN204988860 U CN 204988860U CN 201520408836 U CN201520408836 U CN 201520408836U CN 204988860 U CN204988860 U CN 204988860U
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- face
- steel pipe
- threaded hole
- compression member
- octagon
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Abstract
The utility model discloses a be applied to socket joint that welding heat influence is showing metal compression member, including square steel sheet, be connected with the regular octagon steel pipe of the vertical setting of the central axis on the square steel sheet, eight faces of regular octagon steel pipe lie in and are provided with two upper and lower screw holes on this vertical central line respectively, on first face of regular octagon steel pipe, a third face, the 5th face, the 7th face or lie in the four corners position on second, fourth, the 6th face, the 8th face and be provided with the screw hole respectively. The utility model discloses can fix by effectual tip circular, square and polygon cross -section compression member to not unidimensional, rethread bolted connection is on universal tester to avoided welded connection, and convenient operation, both be applicable to and propped up boundary condition admittedly, also be applicable to a hinge boundary condition.
Description
Technical field
The utility model relates to metal compression member field, specifically a kind of muff joint being applied to welding heat affected remarkable metal compression member.
Background technology
The emerging metal material such as aluminium alloy because of its excellent corrosion resistance and permanance, cyclic utilization rate is high, overall life cycle cost is low, processability is good and specious etc., and advantage has application prospect very widely in building structure field.But aluminum alloy materials is by significantly welding heat affected, and when adopting common welding manner to connect, the strength of materials of weld seam near zone will significantly reduce, and have a strong impact on the mechanical property of aluminium alloy element.Therefore, being welded to connect of aluminium alloy element must adopt special welding technology, and processing technology is complicated, somewhat expensive.For the pressurized tests of this type of hardware, especially component two ends be hinged boundary condition or need apply eccentric load time, component ends inevitably needs the connection carrying out end plate; And for the larger compression member of slenderness ratio, for preventing it from producing larger integral slipping in process of the test, component ends also must adopt end plate connection.
utility model contentthe purpose of this utility model is to provide a kind of muff joint being applied to welding heat affected remarkable metal compression member, to solve prior art Problems existing.
In order to achieve the above object, the technical scheme that the utility model adopts is:
Be applied to the muff joint of welding heat affected remarkable metal compression member, it is characterized in that: the square steel plate comprising horizontal positioned, square steel plate is connected with the octagon steel pipe that central axis is vertically arranged, and on the central axis being centrally located at octagon steel pipe of square steel plate, the each face of octagon steel pipe is positioned on the vertical center line in this face and is respectively arranged with, lower two threaded holes, and the threaded hole on the upper strata in eight faces is in sustained height, the threaded hole of the lower floor in eight faces is in sustained height, octagon steel pipe first face, 3rd face, 5th face, 7th face is positioned at corner location and is respectively arranged with threaded hole, or octagon steel pipe second face, 4th face, 6th face, 8th face is positioned at corner location and is respectively arranged with threaded hole, be positioned at the threaded hole of corner in the distribution that is centrosymmetric on the whole, and the upper strata threaded hole of the threaded hole being positioned at corner at the middle and upper levels on the vertical center line of two threaded hole height and this face is in sustained height, the lower floor's threaded hole be arranged on threaded hole lower floor two threaded hole height of corner and the vertical center line in this face is in sustained height.
The described muff joint being applied to welding heat affected remarkable metal compression member, is characterized in that: each bolt stretches on the end in octagon steel pipe and overlaps rubber sleeve head respectively.
The described muff joint being applied to welding heat affected remarkable metal compression member, is characterized in that: described square steel plate is positioned at corner location and is respectively arranged with bolt hole, the distribution and four bolts hole are centrosymmetric on square steel plate.
The utility model devises a set of muff joint of being conveniently fixed on aluminium alloy compression member two ends, can effectively be fixed the circle of different size, end that is square and polygonal cross-section compression member, be bolted again on universal testing machine, thus avoid and be welded to connect, and it is easy to operate, both be applicable to fixed-end boundary condition, be also applicable to hinged boundary condition.
The utility model adopts square steel plate, octagon steel pipe and the cooperative principle of screw bolt, form an effective entirety, make package unit have good symmetry and globality, thus ensure that muff joint can not have an impact the distortion of test findings in process of the test.In addition, along the layout of the double-deck bolt of steel pipe short transverse, more the slippage of compression member end in process of the test can effectively be limited.In general, for welding heat affected significant metal compression member and the larger compression member of slenderness ratio, specially designed muff joint can effectively prevent compression member from process of the test, producing larger integral slipping, avoids and is welded to connect, serve the effect of alternative end plate connection completely; And go for the circle of different size, square and polygonal cross-section compression member, simplicity of design, easy to operate, and can use by iterative cycles, thus cheap, be easy to promote on a large scale.
Accompanying drawing explanation
Fig. 1 is the utility model structural upright schematic diagram.
Fig. 2 is the utility model structure front elevation.
Fig. 3 is the utility model structure vertical view.
Embodiment
Shown in Fig. 1-Fig. 3, be applied to the muff joint of welding heat affected remarkable metal compression member, comprise the square steel plate 1 of horizontal positioned, square steel plate 1 is connected with the octagon steel pipe 2 that central axis is vertically arranged, and on the central axis being centrally located at octagon steel pipe 2 of square steel plate 1, the each face of octagon steel pipe 2 is positioned on the vertical center line in this face and is respectively arranged with, lower two threaded holes 31, 32, and the threaded hole 31 on the upper strata in eight faces is in sustained height, the threaded hole 32 of the lower floor in eight faces is in sustained height, octagon steel pipe 2 first faces, 3rd face, 5th face, 7th face is positioned at corner location and is respectively arranged with threaded hole 4, or octagon steel pipe 2 second faces, 4th face, 6th face, 8th face is positioned at corner location and is respectively arranged with threaded hole 4, be positioned at the threaded hole 4 of corner in the distribution that is centrosymmetric on the whole, and the upper strata threaded hole 31 of the threaded hole 4 being positioned at corner at the middle and upper levels on the vertical center line of two threaded hole height and this face is in sustained height, the lower floor's threaded hole 32 be arranged on threaded hole lower floor two threaded hole height of corner and the vertical center line in this face is in sustained height.Each bolt 5 stretches on the end in octagon steel pipe 2 and overlaps rubber sleeve head 6 respectively.Square steel plate 1 is positioned at corner location and is respectively arranged with bolt hole 7, the distribution and four bolts hole 7 are centrosymmetric on square steel plate 1.
Principle of work:
The utility model primarily of the larger square steel plate of 1 sectional dimension, 1 by the octagon steel pipe of certain altitude and thickness and several same sizes and the moderate screw bolt of diameter form.By eight of octagon steel pipe faces successively called after face 1, face 2 ... face 8, each is arranged symmetrically with the two-layer threaded hole matched with screw bolt up and down along steel pipe short transverse, and each along the central axis of steel pipe short transverse being furnished with row (2) threaded hole, in addition, face 1, face 3, face 5 and face 7(or face 2, face 4, face 6 and face 8) be also arranged symmetrically with two row (4) threaded hole along the central axis of steel pipe short transverse, the threaded hole on the position of threaded hole and this face central axis is contour.Octagon steel-pipe welding on the square steel plate that sectional dimension is larger, and guarantees that the kernel of section of octagon steel pipe and the kernel of section of square steel plate overlap, thus avoids the adverse effect of initial eccentricity.The surrounding of square steel plate is arranged symmetrically with the bolt hole of 4 same sizes along the periphery of octagon steel pipe, be used for connecting universal testing machine.In addition, the end of all screw bolts is all overlapped certain thickness rubber pullover (in figure blue region), is used for reducing the adverse effect that the direct squeeze test component of screw bolt brings in process of the test member contact face edge stress is concentrated.
For round section compression member, be by 16 screw bolts being screwed into respectively along row (2) threaded hole that the central axis of steel pipe short transverse is arranged on octagon steel pipe each, thus fixed component end realize.First, test component bottom is put into the octagon steel pipe of muff joint, test component is due to own wt, and cross section, bottom can contact completely with square steel plate; Then, slowly tighten 8 bolts on octagon steel pipe upper strata, contact completely until the rubber of bolt end is pullover with the outside surface of compression member, to notice that observation screw bolt is positioned at the many threads (or measuring screw bolt length outside octagon steel pipe) outside octagon steel pipe in the process, ensure that the many threads that each screw bolt is positioned at outside octagon steel pipe is identical, thus guarantee that the kernel of section of test component bottom and the kernel of section of square steel plate overlap, avoid the adverse effect of initial eccentricity; Finally, slowly tighten 8 bolts of octagon steel pipe lower floor, contact completely until the rubber of bolt end is pullover with the outside surface of compression member, need equally to ensure that the many threads that each screw bolt is positioned at outside octagon steel pipe is identical, until the bottom of test component is completely fixed, in process of the test, there will not be slippage.For the top of test component, utilize the own wt of muff joint, tip section can be contacted completely with square steel plate, then identical operation steps is adopted, the top of test component is completely fixed, in process of the test, there will not be slippage, thus effectively prevent round section compression member from process of the test, producing larger integral slipping.
For square and polygonal cross-section compression member, by 16 screw bolts are screwed into octagon steel pipe face 1 respectively, face 3, face 5 and face 7(or face 2, face 4, face 6 and face 8) on two row (4) threaded holes of being arranged symmetrically with along the central axis of steel pipe short transverse, thus fixed component end realizes.Similar with the principle of work of round section compression member, first, test component bottom is put into the octagon steel pipe of muff joint, and four faces four of square-section compression member faces being parallel to respectively octagon steel pipe is furnished with simultaneously three row (6) threaded hole (face 1, face 3, face 5 and face 7 or face 2, face 4, face 6 and face 8), test component is due to own wt, and cross section, bottom can contact completely with square steel plate; Then, slowly tighten 8 bolts on octagon steel pipe upper strata, contact completely until the rubber of bolt end is pullover with the outside surface of compression member, to notice that observation screw bolt is positioned at the many threads (or measuring screw bolt length outside octagon steel pipe) outside octagon steel pipe in the process, ensure that the many threads that each screw bolt is positioned at outside octagon steel pipe is identical, thus guarantee that the kernel of section of test component bottom and the kernel of section of square steel plate overlap, avoid the adverse effect of initial eccentricity; Finally, slowly tighten 8 bolts of octagon steel pipe lower floor, contact completely until the rubber of bolt end is pullover with the outside surface of compression member, need equally to ensure that the many threads that each screw bolt is positioned at outside octagon steel pipe is identical, until the bottom of test component is completely fixed, in process of the test, there will not be slippage.For the top of test component, utilize the own wt of muff joint, tip section can be contacted completely with square steel plate, then identical operation steps is adopted, the top of test component is completely fixed, in process of the test, there will not be slippage, thus effectively prevent square and polygonal cross-section compression member from process of the test, producing larger integral slipping.
In the utility model:
(1) the square steel plate of muff joint and the sectional dimension of octagon steel pipe can be determined according to the sectional dimension of compression member, and thickness is moderate, can not too thick can not be too thin, too thick meeting makes the deadweight of muff joint excessive, has a negative impact to test findings; Too thin then insufficient rigidity, the moderate finite deformation of the test findings that can have an impact in process of the test, and be unfavorable for the operative constraint to screw bolt.
(2) diameter of screw bolt is moderate, can not too greatly can not be too little, the too large compression member less for sectional dimension, especially round section compression member can make bolt end cannot contact completely with the outside surface of compression member, affect the constraint to compression member end; Too little, the slenderness ratio of screw bolt can be strengthened, the fail in bending of screw bolt in process of the test may be caused, and it is concentrated to the stress of compression member surface of contact to increase screw bolt.In addition, the length of screw bolt is also moderate, can not oversize can not be too short, the oversize slenderness ratio that can strengthen screw bolt, may cause the fail in bending of screw bolt in process of the test; Too short, be not suitable for the compression member that sectional dimension is less, affect the scope of application of muff joint.
(3) distance in the upper and lower two-layer threaded hole that is arranged symmetrically with along steel pipe short transverse of octagon steel pipe each and steel tube end part cross section is moderate, can not too greatly can not be too little, too conference makes the hypotelorism between upper and lower two-layer threaded hole, affects the constraint to compression member end; Too little, be unfavorable for the operative constraint to screw bolt.
(4) octagon steel pipe face 1, face 3, face 5 and face 7(or face 2, face 4, face 6 and face 8) distance of two row (4) threaded holes that are arranged symmetrically with along the central axis of steel pipe short transverse and central axis is moderate, can not too greatly can not be too little, too conference makes the distance between the two row threaded holes that are arranged symmetrically with excessive, be not suitable for the square and polygonal cross-section compression member that sectional dimension is less, affect the scope of application of muff joint; Too little, arrange the common pair cross-section of (2) threaded hole form larger weakening with central axis is arranged one, be unfavorable for the operative constraint to screw bolt.
(5) pressure tightened in process of the test when screw bolt makes it contact completely with compression member outside surface is moderate, can not too greatly can not be too little, too conference increase screw bolt is concentrated the stress of compression member surface of contact, makes compression member surface of contact that cripling occur in advance and destroys; Too little, be unfavorable for the operative constraint to compression member end, make it in process of the test, occur Local Sliding.
Claims (3)
1. be applied to the muff joint of welding heat affected remarkable metal compression member, it is characterized in that: the square steel plate comprising horizontal positioned, square steel plate is connected with the octagon steel pipe that central axis is vertically arranged, and on the central axis being centrally located at octagon steel pipe of square steel plate, the each face of octagon steel pipe is positioned on the vertical center line in this face and is respectively arranged with, lower two threaded holes, and the threaded hole on the upper strata in eight faces is in sustained height, the threaded hole of the lower floor in eight faces is in sustained height, octagon steel pipe first face, 3rd face, 5th face, 7th face is positioned at corner location and is respectively arranged with threaded hole, or octagon steel pipe second face, 4th face, 6th face, 8th face is positioned at corner location and is respectively arranged with threaded hole, be positioned at the threaded hole of corner in the distribution that is centrosymmetric on the whole, and the upper strata threaded hole of the threaded hole being positioned at corner at the middle and upper levels on the vertical center line of two threaded hole height and this face is in sustained height, the lower floor's threaded hole be arranged on threaded hole lower floor two threaded hole height of corner and the vertical center line in this face is in sustained height.
2. the muff joint being applied to welding heat affected remarkable metal compression member according to claim 1, is characterized in that: each bolt stretches on the end in octagon steel pipe and overlaps rubber sleeve head respectively.
3. the muff joint being applied to welding heat affected remarkable metal compression member according to claim 1, it is characterized in that: described square steel plate is positioned at corner location and is respectively arranged with bolt hole, the distribution and four bolts hole are centrosymmetric on square steel plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520408836.5U CN204988860U (en) | 2015-06-12 | 2015-06-12 | Be applied to socket joint that welding heat influence is showing metal compression member |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520408836.5U CN204988860U (en) | 2015-06-12 | 2015-06-12 | Be applied to socket joint that welding heat influence is showing metal compression member |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204988860U true CN204988860U (en) | 2016-01-20 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520408836.5U Expired - Fee Related CN204988860U (en) | 2015-06-12 | 2015-06-12 | Be applied to socket joint that welding heat influence is showing metal compression member |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204988860U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104931341A (en) * | 2015-06-12 | 2015-09-23 | 合肥工业大学 | Sleeve joint applied to metal compression members having remarkable welding heat influence |
| CN110220771A (en) * | 2019-07-15 | 2019-09-10 | 福州大学 | A kind of double-pole hinged-support suitable for pressurized tests |
-
2015
- 2015-06-12 CN CN201520408836.5U patent/CN204988860U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104931341A (en) * | 2015-06-12 | 2015-09-23 | 合肥工业大学 | Sleeve joint applied to metal compression members having remarkable welding heat influence |
| CN110220771A (en) * | 2019-07-15 | 2019-09-10 | 福州大学 | A kind of double-pole hinged-support suitable for pressurized tests |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160120 Termination date: 20190612 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |