CN103740993A - Lightweight magnesium alloy inlaid adjustable crutch - Google Patents
Lightweight magnesium alloy inlaid adjustable crutch Download PDFInfo
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- CN103740993A CN103740993A CN201410014893.5A CN201410014893A CN103740993A CN 103740993 A CN103740993 A CN 103740993A CN 201410014893 A CN201410014893 A CN 201410014893A CN 103740993 A CN103740993 A CN 103740993A
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- magnesium alloy
- crutch
- rhabd
- mobile jib
- shaped steel
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Abstract
The invention discloses a lightweight magnesium alloy adjustable crutch belonging to articles for daily use. The lightweight magnesium alloy adjustable crutch is characterized by consisting of an underarm pillar head, an upper main rod, a middle main rod, a handle cover, a lower middle rod, a lower main rod and a foundation bolt, wherein the underarm pillar head is connected with the upper main rod through a hinge; the upper main rod part is connected with the middle main rod through a U-shaped steel ball; the middle main rod is in interference fit with the handle cover; the handle cover is in interference fit with the lower middle rod; the lower middle rod is connected with the lower main rod through a U-shaped steel ball; the lower main rod is in interference fit with the foundation bolt. The crutch is firm, durable, high in strength and high in bearing capability, and has the characteristics that the crutch the density (1.74g/cm<3>) is low, the strength is high and the shock absorption property is good, the impact load bearing capacity is higher than that of aluminum alloys or stainless steel, and the crutch has high resistance to organic matters and alkali and does not deform after long-term use.
Description
Technical field
The invention belongs to magnesium alloy materials and Application Areas thereof, be specifically related to the inserted adjustable crutch of a kind of magnesium alloy.
Background technology
The main raw of manufacturing at present crutch has steel/aluminium alloy etc.And magnesium alloy is the lightest structural metallic materials of proportion in the practical application of the current world, its major advantage has: first China's magnesium resource is abundant, and export volume ranks first in the world; Its characteristic specific tenacity is high, specific rigidity is strong, shock absorption is strong, damping and amortization is better than not yielding, the recyclable recycling of other metals, life-time service, by universally acknowledged be 21st century " green engineering material ", during Ye Shi China 12, emphasis is encouraged the type material of cross-cutting development, the crutch of making of magnesium alloy is lighter than use steel, aluminium alloy, its proportion is 2/3 of aluminium, 1/4 of steel.
Domestic and international existing crutch articles for use are mainly take steel construction, constructed of aluminium as main, the crutch quality weight of steel construction, to user, caused certain burden, especially handicapped person, stationarity is poor, easily cause danger, although and alleviating to some extent of the relative steel construction of aluminium alloy is still heavier comparatively speaking, significantly lighten the burden to user, thus, the application of magnesium alloy on crutch just put forward.
Summary of the invention
Through hundreds of the experiments of 1 year, applicant develops the inserted adjustable crutch of a kind of magnesium alloy that weight is lighter finally.
Technical problem to be solved by this invention is: 1, crutch weight is large, carries inconvenience; 2, crutch produces the problem of vibrations; 3, crutch intensity is not high, yielding problem.
Technical scheme of the present invention is:
A kind of magnesium alloy, alloy content is by mass percentage: AL6.0 %; Zn1.0 %; Mn0.3 %; RE3.0%; Ca0.8 %; All the other are Mg.
Described RE is a kind of mishmetal, is the mishmetal of lanthanum (La), cerium (Ce), praseodymium (Pr), neodymium (Nd).
The inserted adjustable crutch of a kind of magnesium alloy, it is comprised of oxter column cap, upper rhabd, middle mobile jib, grip, lower king-rod, lower rhabd, lower margin.
Hinge-connection between oxter column cap and upper rhabd; Between upper rhabd position and middle mobile jib, by U-shaped steel disc hoodle, connect; Shrink-fit between middle mobile jib and grip; Shrink-fit between grip and lower king-rod; Between lower king-rod and lower rhabd, by U-shaped steel disc hoodle, be connected; Between lower rhabd and lower margin, it is shrink-fit.
Described U-shaped steel disc hoodle is a U-shaped steel disc, in the both sides of U-shaped steel disc, is provided with convex column cap;
Described grip is comprised of pipe connecting and handgrip, handgrip is arranged on the middle part of pipe connecting, take handgrip central axis, as boundary, handgrip is divided into top tube and down tube, and more than central axis is upper pipe, pipe under being below central axis, is 54 degree angles between handgrip central axis and upper tubular axis line; Between handgrip central axis and oxter column cap 1, be 32 degree angles.
Between upper tubular axis line and lower tubular axis line, be 165 degree angles; Between upper tube wall and lower tube wall, seamlessly transit;
At oxter column cap and upper rhabd, be connected through the hinge, hinge both sides are provided with postive stop baffle, limiting plate is for limiting the slewing area of hinge, hinge can only be rotated in the scope of 35 degree, take human body as benchmark, take line direction before user's human body as front, rotate up and down forward 15 °, rotate up and down backward 10 °.
The magnesium alloy materials of a kind of magnesium alloy adjustable crutch of the present invention is compared with current most widely used commercial wrought magnesium alloys AZ31, and deformability is apparently higher than AZ31, and tensile strength is higher than AZ31 simultaneously.The high-ductility wrought magnesium alloys typical case mechanical property that the second-phase of high stability strengthens: room temperature tensile strength and yield strength are respectively 320Mpa-360Mpa, 260Mpa-290Mpa, surmount 220Mpa, the 160Mpa of AZ31 comprehensively.
The mechanical property experiment of magnesium alloy of the present invention: the shape of tension specimen all adopts dumbbell shaped.
Rate of extension tension test is carried out in Instron 1121 material-testing machine, and draw speed is 1.0mm/min, and room temperature tensile horizontal survey 3 times, averages.
The mechanical property of extruded section: yield strength 288MPa, tensile strength 361MPa, elongation 19.2%;
The mechanical property of extruded tube: yield strength 236MPa, tensile strength 324MPa, elongation 16.1%;
The mechanical property of welding tubing: yield strength 213MPa, tensile strength 315MPa, elongation 14.5%.
Alloy grain after crimp is tiny, even, and grain-size, below 2 microns, and has very tiny particulate state dispersion phase precipitation, and crystal grain strengthening effect is obvious, has also improved the deformability of alloy simultaneously.From Alloy Fracture scanned picture, can find out, the fracture mode of alloy is ductile rupture, is characterized as micro-mouthful of accumulation type, embodies the high-ductility of alloy.
Magnesium alloy is the lightest metal in practical metal, is 2/3 of aluminium, is 1/4 of iron, but compares and have high strength with aluminium, stainless steel, the advantage of high rigidity; Although the proportion of magnesium alloy is than plastics weight in addition, intensity and the spring rate of unit weight are higher than plastics, and in the case of same intensity component, it is thin and light that the component of magnesium alloy can do than plastics.So that the magnesium alloy crutch making of this kind of magnesium alloy has advantages of is lightweight, be convenient for carrying.
Magnesium alloy Young's modulus is high, there are certain antidetonation and shock-absorbing function, in elastic range, when magnesium alloy is subject to shock load, the large half of energy Ratios Al-alloy parts absorbing, so magnesium alloy has good antidetonation shock attenuation performance, old man can cushion to a certain extent the vibrations to arm in use crutch contacts compared with the process of hardstand.
Crutch of the present invention is sturdy and durable, and intensity is high, and weight capacity is characterized in by force: density little (1.74g/cm3), intensity is high, and damping property is good, and the loading capacity that withstands shocks is larger than aluminium alloy I, stainless steel, the corrodibility of resistance to organism and alkali is good, and life-time service is indeformable.
The present invention has following advantage:
1. heat loss through conduction performance is better than aluminium alloy and plastics, and user is hand feel and drape in use.
2. weight ratio aluminium is light by 30%, and Young's modulus is little, exquisite in texture.
3. replace the raw materials such as aluminium alloy, iron and steel, 100% recyclable recycling.
4. specific tenacity is high, and specific rigidity is strong, and life-time service is not yielding, can not bend phenomenon in use procedure.
Accompanying drawing explanation
Fig. 1 is structure iron of the present invention.
Fig. 2 is the enlarged view of grip in the present invention.
Fig. 3 be in the present invention oxter column cap and upper rhabd be connected signal enlarged view.
Fig. 4 is the structure iron of U-shaped steel disc hoodle in the present invention.
In figure, 1, oxter column cap, 2, upper rhabd, 3, middle mobile jib, 4, grip, 5, lower king-rod, 6, lower rhabd, 7, lower margin, 8, projection head, 9, baffle plate, 10, the part that is articulated and connected, 11, pipe connecting, 12, handgrip.
Embodiment
Shown in embodiment: Fig. 1, Fig. 2, Fig. 3, the present embodiment is comprised of oxter column cap 1, upper rhabd 2, middle mobile jib 3, grip 4, lower king-rod 5, lower rhabd 6, lower margin 7.
Hinged between oxter column cap 1 and upper rhabd 2; Between upper rhabd 2 and middle mobile jib 3, by U-shaped steel disc hoodle, connect, it is the inner core that U-shaped steel disc hoodle arranges upper rhabd, the barrel of upper rhabd is provided with two pilot holes, and two projection heads 8 of U-shaped steel disc hoodle are connected through two pilot holes and with the pilot hole on the barrel of middle mobile jib respectively;
Shrink-fit between middle mobile jib 3 and grip 4; Between grip 4 and lower king-rod 5, by U-shaped steel disc hoodle, be connected, it is the inner core that U-shaped steel disc hoodle arranges lower king-rod, the barrel of lower king-rod is provided with two pilot holes, and two projection heads 8 of U-shaped steel disc hoodle are connected through two pilot holes and with the pilot hole on the barrel of lower rhabd respectively; Shrink-fit between lower king-rod 5 and lower rhabd 6; Between lower rhabd 6 and lower margin 7, it is shrink-fit.
Described U-shaped steel disc hoodle is a U-shaped steel disc, in the both sides of U-shaped steel disc, is provided with convex column cap 8;
Described oxter column cap 1 is porous plastics material, quality softness, hinged by the part 10 that is articulated and connected at oxter column cap and upper rhabd, part 10 both sides that are articulated and connected are provided with postive stop baffle 9, and limiting plate 9 is for limiting the slewing area of the part 10 that is articulated and connected, and the part 10 that makes to be articulated and connected can only rotate in the scope of 35 degree, take human body as benchmark, take line direction before user's human body as front, rotate up and down forward 15 °, rotate up and down backward 10 °.Part 10 inside that are articulated and connected stud with spring, cater to user's pressure direction, give cushion effect, alleviate user's tenderness sense on certain.
The registration hole that the present invention arranges by the inwall of lower king-rod, regulates the position of U-shaped steel disc hoodle, thereby realize, regulates the height of crutch handgrip to oxter, can give comfortable height of user.
The registration hole that the present invention arranges by the inwall of lower rhabd, regulates the position of U-shaped steel disc hoodle, thereby realize, regulates foot to the height of holding, and gives comfortable height of user.
Described grip is comprised of the pipe connecting 11 and the handgrip 12 that are connected with middle mobile jib 3 and lower king-rod, handgrip 12 is arranged on the middle part of pipe connecting 11, take handgrip central axis, as boundary, pipe connecting 11 is divided into top tube and down tube, more than central axis is upper pipe, pipe under being below central axis, is 54 degree angles between handgrip central axis and upper tubular axis line; Between handgrip central axis and oxter column cap 1, be 32 degree angles.
Between upper tubular axis line and lower tubular axis line, be 165 degree angles; Between upper tube wall outward flange and lower tube wall outward flange, become 15 degree angles to seamlessly transit;
Grip divides three drift angle degree, and take Descartes's three-dimensional coordinate as reference, mobile jib is Y-axis, and mobile jib is to 15 °, X-axis negative bias angle, handgrip 12 and 32 ° of mobile jib Y-axis positive dirction drift angles, 54 ° of grip and mobile jib X-axis negative direction drift angles.
More comfortable in order to use, at middle mobile jib overcoat, there is an annulus, middle mobile jib embeds shrink-fit in grip together with annulus; Use convenient safety;
Grip of the present invention has fully catered to comfortable angle when user uses, and alleviates the pain that long-time use causes, and entire body employing nylon+glass fiber plastic part, and quality is comfortable;
Lower margin adopts rubber to make, and elasticity is high, when user uses, can reduce a large amount of screen resiliences; This crutch one-piece construction is considered human engineering mechanics's application, and oxter and to hold two point stressed changes in the past one hand and holds stressed long-time use and can make user produce fatigue and pain.
Claims (7)
1. a light-duty magnesium alloy adjustable crutch, is characterized in that adopting magnesium alloy materials to make, and described magnesium alloy materials is that chemical composition is by mass percentage: aluminium is 6.0 %; Zinc is 1.0 %; Manganese is 0.3 %; RE is 3.0%; Calcium is 0.8 %; All the other are Mg.
2. the light-duty magnesium alloy adjustable crutch of one according to claim 1, is characterized in that it is comprised of oxter column cap, upper rhabd, middle mobile jib, grip, lower king-rod, lower rhabd, lower margin;
Between oxter column cap and upper rhabd, be connected through the hinge; Between upper rhabd position and middle mobile jib, by U-shaped steel disc hoodle, connect; Shrink-fit between middle mobile jib and grip; Shrink-fit between grip and lower king-rod; Between lower king-rod and lower rhabd, by U-shaped steel disc hoodle, be connected; Between lower rhabd and lower margin, it is shrink-fit.
3. the light-duty magnesium alloy adjustable crutch of one according to claim 2, is characterized in that described U-shaped steel disc hoodle is a U-shaped steel disc, in the both sides of U-shaped steel disc, is provided with convex column cap.
4. the light-duty magnesium alloy adjustable crutch of one according to claim 2, it is characterized in that described grip is comprised of pipe connecting and handgrip, handgrip is arranged on the middle part of pipe connecting, take handgrip central axis, as boundary, pipe connecting is divided into top tube and down tube, more than central axis is upper pipe, pipe under being below central axis, is 54 degree angles between handgrip central axis and upper tubular axis line; Between handgrip central axis and oxter column cap, be 32 degree angles; Between upper tubular axis line and lower tubular axis line, be 165 degree angles; Between upper tube wall and lower tube wall, become 15 degree angles to seamlessly transit.
5. the light-duty magnesium alloy adjustable crutch of one according to claim 2, is characterized in that described upper rhabd is that angle is the bend pipe of 165 degree.
6. the light-duty magnesium alloy adjustable crutch of one according to claim 2, it is characterized in that described hinge both sides are provided with postive stop baffle, postive stop baffle is for limiting the slewing area of hinge, hinge can only be rotated in the scope of 35 degree, take human body as benchmark, take line direction before user's human body as front, hinge can rotate forward 15 ° up and down, rotates up and down backward 10 °.
7. the light-duty magnesium alloy adjustable crutch of one according to claim 2, it is characterized in that described grip divides three drift angle degree, take Descartes's three-dimensional coordinate as reference, mobile jib is Y-axis, mobile jib is to 15 °, X-axis negative bias angle, handgrip 12 and 32 ° of mobile jib Y-axis positive dirction drift angles, 54 ° of grip and mobile jib X-axis negative direction drift angles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410014893.5A CN103740993A (en) | 2014-01-14 | 2014-01-14 | Lightweight magnesium alloy inlaid adjustable crutch |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410014893.5A CN103740993A (en) | 2014-01-14 | 2014-01-14 | Lightweight magnesium alloy inlaid adjustable crutch |
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| CN103740993A true CN103740993A (en) | 2014-04-23 |
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| CN201410014893.5A Pending CN103740993A (en) | 2014-01-14 | 2014-01-14 | Lightweight magnesium alloy inlaid adjustable crutch |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108113290A (en) * | 2016-08-23 | 2018-06-05 | 孟村 | It is used to support the supporting mechanism that human body oxter reduces lumbar vertebrae pressure |
| CN111973408A (en) * | 2020-09-03 | 2020-11-24 | 合肥工业大学 | Novel medical underarm crutch |
| CN112914860A (en) * | 2021-03-02 | 2021-06-08 | 金华职业技术学院 | Electric wheelchair with auxiliary getting-on and getting-off bed function |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102499860A (en) * | 2011-12-01 | 2012-06-20 | 国家康复辅具研究中心 | Ergonomic walking stick |
| CN102864352A (en) * | 2012-09-04 | 2013-01-09 | 古交市银河镁业有限公司 | Magnesium alloy and device and method for machining magnesium alloy handrail ring of wheelchair |
-
2014
- 2014-01-14 CN CN201410014893.5A patent/CN103740993A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102499860A (en) * | 2011-12-01 | 2012-06-20 | 国家康复辅具研究中心 | Ergonomic walking stick |
| CN102864352A (en) * | 2012-09-04 | 2013-01-09 | 古交市银河镁业有限公司 | Magnesium alloy and device and method for machining magnesium alloy handrail ring of wheelchair |
Non-Patent Citations (1)
| Title |
|---|
| 双鸭山新闻网: "新型拐杖", 《HTTP://SHUANGYASHAN.DBW.CN/SYSTEM/2010/06/08/052554191.SHTML》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108113290A (en) * | 2016-08-23 | 2018-06-05 | 孟村 | It is used to support the supporting mechanism that human body oxter reduces lumbar vertebrae pressure |
| CN111973408A (en) * | 2020-09-03 | 2020-11-24 | 合肥工业大学 | Novel medical underarm crutch |
| CN112914860A (en) * | 2021-03-02 | 2021-06-08 | 金华职业技术学院 | Electric wheelchair with auxiliary getting-on and getting-off bed function |
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Application publication date: 20140423 |