阅读说明：本技术 一种具有转向定位刹车机构的推车脚轮及其制备方法 (Cart caster with steering positioning brake mechanism and manufacturing method thereof ) 是由 江金火 于 2020-12-29 设计创作，主要内容包括：本发明公开了一种具有转向定位刹车机构的推车脚轮及其制备方法,涉及移动装置技术领域。本发明为一种具有转向定位刹车机构的推车脚轮,该推车脚轮包括脚轮以及转向定位刹车机构,其中转向定位刹车装置的材质为镁铝合金复合材料,脚轮的材质为聚氨酯,该镁铝合金复合材料所含成分分别为硅3-5％,铁0.2-1％,锰0.2-1％,镁0.2-1％,镍0.2-0.5％,铜2-5％,锌0.5-1％,锡0.2-0.5％和铝85-95％,该聚氨酯所含成分分别为低分子量聚醚30-40％；甲苯二异氰酸酯40-50％和三羟甲基丙烷10-20％,本发明中包括脚轮主体以及转向定位装置,本发明配制的推车脚轮,具有更好的耐磨性以及强度,并且可对脚轮行进方向进行固定,在推车脚轮不刹车时可全方位行动,在刹车后只能直行不能转向。(The invention discloses a trolley caster with a steering positioning brake mechanism and a preparation method thereof, and relates to the technical field of mobile devices. The invention relates to a cart caster with a steering positioning brake mechanism, which comprises a caster and the steering positioning brake mechanism, wherein the steering positioning brake mechanism is made of a magnesium-aluminum alloy composite material, the caster is made of polyurethane, the magnesium-aluminum alloy composite material comprises 3-5% of silicon, 0.2-1% of iron, 0.2-1% of manganese, 0.2-1% of magnesium, 0.2-0.5% of nickel, 2-5% of copper, 0.5-1% of zinc, 0.2-0.5% of tin and 85-95% of aluminum, and the polyurethane comprises 30-40% of low molecular weight polyether; the trolley caster prepared by the invention has better wear resistance and strength, can fix the advancing direction of the caster, can move in all directions when the trolley caster is not braked, and can only move straight and cannot steer after being braked.)

1. The utility model provides a shallow truckle with turn to location brake mechanism which characterized in that: the cart caster comprises a caster and a steering positioning brake mechanism, wherein the steering positioning brake mechanism is made of a magnesium aluminum alloy composite material, the caster is made of polyurethane, the magnesium aluminum alloy composite material comprises 3-5% of silicon, 0.2-1% of iron, 0.2-1% of manganese, 0.2-1% of magnesium, 0.2-0.5% of nickel, 2-5% of copper, 0.5-1% of zinc, 0.2-0.5% of tin and 85-95% of aluminum, and the polyurethane comprises 30-40% of low molecular weight polyether; 40-50% of toluene diisocyanate and 10-20% of trimethylolpropane.

2. The cart caster wheel with steering positioning brake mechanism of claim 1, wherein: the magnesium-aluminum alloy composite material comprises 4% of silicon, 0.4% of iron, 0.5% of manganese, 0.3% of magnesium, 0.3% of nickel, 4% of copper, 1% of zinc, 0.3% of tin and 89.2% of aluminum.

3. The cart caster wheel with steering positioning brake mechanism of claim 2, wherein:

the preparation method of the magnesium-aluminum alloy composite material comprises the following steps: weighing quantitative silicon, iron, manganese, magnesium, nickel, copper, zinc, tin and aluminum metals according to the proportion, putting the metals into a smelting furnace, pushing materials in the furnace to be scattered and pushed to be flat by a push rod so as to be uniformly heated, closing a furnace door of the smelting furnace, starting a fan to ignite, heating to 750 ℃ for melting, then heating to 1000 ℃ and preserving heat for 30min so as to completely melt the metals, opening the furnace door to fully stir the metal solution in the furnace in an N-type mode, and stirring for 20 min.

4. The cart caster wheel with steering positioning brake mechanism of claim 2, wherein:

the preparation method of the magnesium-aluminum alloy composite material comprises the following steps: spraying a small amount of slag removing agent on the surface of the molten metal according to the proportion of 0.3%, standing for 15min, then only stirring with an iron stick, fully stirring the molten metal and the slag removing agent in an N-shaped mode for 30min, measuring the temperature in the furnace, transferring when the temperature reaches the transferring temperature, opening a sub furnace door by 10cm, completely opening a main furnace eye, slowly transferring, closing the furnace eye after the transferring is finished, and cleaning the flow channel.

5. The cart caster wheel with steering positioning brake mechanism of claim 2, wherein:

the preparation method of the magnesium-aluminum alloy composite material comprises the following steps: refining the molten metal for 30min after transferring, preheating the mold by using the molten metal to heat the mold to about 150 ℃, controlling the flow of the molten metal by using an iron plug rod with a sleeve to uniformly flow into the mold, cooling the mold by using clear water at 100 ℃, and spraying a release agent on the surface of the cast ingot to release the cast ingot;

and (3) stamping or die-casting the prepared magnesium-aluminum alloy composite material for shaping, passivating the surface of the magnesium-aluminum alloy composite material, and polishing and coating the surface of the magnesium-aluminum alloy composite material.

6. The cart caster wheel with steering positioning brake mechanism of claim 1, wherein: the polyurethane contains 35% of low molecular weight polyether; 48% of toluene diisocyanate and 17% of trimethylolpropane.

7. The cart caster wheel with steering positioning brake mechanism of claim 6, wherein:

the preparation method of the polyurethane comprises the following steps: pouring a certain amount of low molecular weight polyether into a three-neck flask, uniformly stirring and dehydrating in vacuum, wherein the dehydration time is 5h, adding prepared trimethylolpropane as a chain extender, carrying out a curing reaction at a constant temperature of 80 ℃, the reaction time is about 5h, slowly adding toluene diisocyanate according to a proportion, standing for 30min at 60 ℃ and 70 ℃ respectively during the addition because the toluene diisocyanate and the low molecular weight polyether can generate violent exothermic reactions, waiting for the solution to react stably and continue to be added, and finally reacting for 3h at 80 ℃ to obtain polyurethane, and molding the polyurethane.

8. The cart caster with steering positioning brake mechanism according to any one of claims 1 to 7, comprising a caster body (100) and a steering positioning device (200), characterized in that: the caster main body (100) comprises a fixing column (130), a first fixing ring (140) and a second fixing ring (150), the inner surface of the first fixing ring (140) is welded to the outer surface of the fixing column (130), the steering positioning device (200) comprises a steering column (210), a universal shaft (220) and a fixing plate (230), the inner surface of the second fixing ring (150) is welded to the outer surface of the steering column (210), the universal shaft (220) is in rotating fit with the steering column (210), and the lower surface of the fixing plate (230) is welded to the upper surface of the universal shaft (220).

9. The cart caster wheel with steering positioning brake mechanism of claim 8, wherein: truckle main part (100) still include polyurethane truckle (110), axis of rotation (120) and bumper shock absorber (160), two polyurethane truckle (110) all with axis of rotation (120) normal running fit, fixed column (130) lower surface and axis of rotation (120) outer surface welding, first solid fixed ring (140) and the solid fixed ring of second (150) upper surface all are equipped with the mounting hole, and is a plurality of bumper shock absorber (160) are connected with a plurality of mounting holes respectively.

10. The cart caster wheel with steering positioning brake mechanism of claim 8, wherein: turn to positioner (200) and still include first fixed block (240), second fixed block (250), push rod (260) and push pedal (270), a first fixed block (240) side surface and steering column (210) outer surface weld, a second fixed block (250) side surface and cardan shaft (220) outer surface weld, first fixed block (240), second fixed block (250) and fixed plate (230) upper surface all are equipped with the through-hole, push rod (260) are connected with the through-hole, push pedal (270) lower surface and push rod (260) upper surface connection.

Technical Field

The invention belongs to the technical field of mobile devices, and particularly relates to a trolley caster with a steering positioning brake mechanism and a preparation method thereof.

Background

The caster is also called as a universal wheel, is a wheel capable of freely rotating in the horizontal direction, is widely applied to various industries and fields, facilitates the free movement of articles, is convenient for adjusting the direction, and can be used for transferring materials or articles in places such as warehouses, supermarkets, hospitals and the like, so that the caster convenient to orient is very necessary to design.

The existing universal wheel is usually made of rubber, does not have the functions of pressure resistance and wear resistance, can turn to move when moving, but cannot move in a fixed direction, and is inconvenient to use when needing linear movement, so that the trolley caster with the turning and positioning brake mechanism and the preparation method thereof are provided.

Disclosure of Invention

The invention aims to provide a trolley caster with a steering positioning brake mechanism and a preparation method thereof, and solves the problems that the existing mask is poor in moisture absorption and air permeability, poor in heat clearing effect and generally incapable of being used after being cleaned or poor in sterilization effect after being cleaned for multiple times.

In order to solve the technical problems, the invention is realized by the following technical scheme:

the invention relates to a cart caster with a steering positioning brake mechanism, which comprises a caster and the steering positioning brake mechanism, wherein the steering positioning brake mechanism is made of a magnesium-aluminum alloy composite material, the caster is made of polyurethane, the magnesium-aluminum alloy composite material comprises 3-5% of silicon, 0.2-1% of iron, 0.2-1% of manganese, 0.2-1% of magnesium, 0.2-0.5% of nickel, 2-5% of copper, 0.5-1% of zinc, 0.2-0.5% of tin and 85-95% of aluminum, and the polyurethane comprises 30-40% of low molecular weight polyether; 40-50% of toluene diisocyanate and 10-20% of trimethylolpropane.

Preferably, the magnesium-aluminum alloy composite material comprises 4% of silicon, 0.4% of iron, 0.5% of manganese, 0.3% of magnesium, 0.3% of nickel, 4% of copper, 1% of zinc, 0.3% of tin and 89.2% of aluminum.

Preferably, the preparation method of the magnesium-aluminum alloy composite material comprises the following steps: weighing quantitative silicon, iron, manganese, magnesium, nickel, copper, zinc, tin and aluminum metals according to the proportion, putting the metals into a smelting furnace, pushing materials in the furnace to be scattered and pushed to be flat by a push rod so as to be uniformly heated, closing a furnace door of the smelting furnace, starting a fan to ignite, heating to 750 ℃ for melting, then heating to 1000 ℃ and preserving heat for 30min so as to completely melt the metals, opening the furnace door to fully stir the metal solution in the furnace in an N-type mode, and stirring for 20 min.

Preferably, the preparation method of the magnesium-aluminum alloy composite material comprises the following steps: spraying a small amount of slag removing agent on the surface of the molten metal according to the proportion of 0.3%, standing for 15min, then only stirring with an iron stick, fully stirring the molten metal and the slag removing agent in an N-shaped mode for 30min, measuring the temperature in the furnace, transferring when the temperature reaches the transferring temperature, opening a sub furnace door by 10cm, completely opening a main furnace eye, slowly transferring, closing the furnace eye after the transferring is finished, and cleaning the flow channel.

Preferably, the preparation method of the magnesium-aluminum alloy composite material comprises the following steps: refining the molten metal for 30min after transferring, preheating the mold by using the molten metal to heat the mold to about 150 ℃, controlling the flow of the molten metal by using an iron plug rod with a sleeve to uniformly flow into the mold, cooling the mold by using clear water at 100 ℃, and spraying a release agent on the surface of the cast ingot to release the cast ingot;

and (3) stamping or die-casting the prepared magnesium-aluminum alloy composite material for shaping, passivating the surface of the magnesium-aluminum alloy composite material, and polishing and coating the surface of the magnesium-aluminum alloy composite material.

Preferably, the polyurethane contains 35% of low molecular weight polyether; 48% of toluene diisocyanate and 17% of trimethylolpropane.

Preferably, the polyurethane is prepared by the following method: pouring a certain amount of low molecular weight polyether into a three-neck flask, uniformly stirring and dehydrating in vacuum, wherein the dehydration time is 5h, adding prepared trimethylolpropane as a chain extender, carrying out a curing reaction at a constant temperature of 80 ℃, the reaction time is about 5h, slowly adding toluene diisocyanate according to a proportion, standing for 30min at 60 ℃ and 70 ℃ respectively during the addition because the toluene diisocyanate and the low molecular weight polyether can generate violent exothermic reactions, waiting for the solution to react stably and continue to be added, and finally reacting for 3h at 80 ℃ to obtain polyurethane, and molding the polyurethane.

The utility model provides a shallow truckle with turn to location brake mechanism, includes the truckle main part and turns to positioner, the truckle main part includes the solid fixed column, the solid fixed ring of first solid fixed ring and the solid fixed ring of second, the solid fixed ring internal surface of first solid fixed ring and the outer surface welding of fixed column, turn to positioner including steering column, cardan shaft and fixed plate, the solid fixed ring internal surface of second and the outer surface welding of steering column, cardan shaft and steering column normal running fit, fixed plate lower surface and cardan shaft upper surface welding.

Preferably, the truckle main part still includes polyurethane truckle, axis of rotation and bumper shock absorber, two the polyurethane truckle all with axis of rotation normal running fit, fixed column lower surface and axis of rotation surface weld, the solid fixed ring of first solid fixed ring and the solid fixed ring upper surface of second all are equipped with the mounting hole, and is a plurality of the bumper shock absorber is connected with a plurality of mounting holes respectively, and the material of making the polyurethane truckle is polyurethane, makes the truckle have the characteristic of high wear-resisting and high resistance to compression.

Preferably, turn to positioner and still include first fixed block, second fixed block, push rod and push pedal, first fixed block side surface and steering column outer surface welding, second fixed block side surface and cardan shaft outer surface welding, first fixed block, second fixed block and fixed plate upper surface all are equipped with the through-hole, the push rod is connected with the through-hole, push pedal lower surface and push rod upper surface connection turn to positioner's effect and be used for the direction of fixed polyurethane truckle, make it rotate at will or directional action.

The invention has the following beneficial effects:

the cart caster prepared by the invention has better wear resistance and strength, can fix the advancing direction of the caster, simplifies the original brake mechanism, can move in all directions when the cart caster is not braked, can only move straight and cannot turn after being braked, meets the use requirement, and is worthy of popularization.

Of course, it is not necessary for any product in which the invention is practiced to achieve all of the above-described advantages at the same time.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic view of the overall structure of a cart caster with a steering positioning brake mechanism according to the present invention;

FIG. 2 is an isometric view of a cart caster with a steering position brake mechanism according to the present invention;

fig. 3 is a schematic structural diagram of the steering positioning device of the present invention.

In the drawings, the components represented by the respective reference numerals are listed below:

100. a caster body; 110. a polyurethane caster; 120. a rotating shaft; 130. fixing a column; 140. a first retaining ring; 150. a second retaining ring; 160. a shock absorber; 200. a steering positioning device; 210. a steering column; 220. a cardan shaft; 230. a fixing plate; 240. a first fixed block; 250. a second fixed block; 260. a push rod; 270. a push plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "upper", "middle", "outer", "inner", and the like, indicate orientations or positional relationships, are used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referenced components or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

The first embodiment is as follows:

referring to fig. 1-3, the cart caster with the steering positioning brake mechanism of the present invention comprises a caster and a steering positioning brake mechanism, wherein the steering positioning brake mechanism is made of magnesium aluminum alloy composite material, the caster is made of polyurethane, the magnesium aluminum alloy composite material comprises 3-5% of silicon, 0.2-1% of iron, 0.2-1% of manganese, 0.2-1% of magnesium, 0.2-0.5% of nickel, 2-5% of copper, 0.5-1% of zinc, 0.2-0.5% of tin, and 85-95% of aluminum, and the polyurethane comprises 30-40% of low molecular weight polyether; 40-50% of toluene diisocyanate and 10-20% of trimethylolpropane.

Further, the magnesium-aluminum alloy composite material comprises 4% of silicon, 0.4% of iron, 0.5% of manganese, 0.3% of magnesium, 0.3% of nickel, 4% of copper, 1% of zinc, 0.3% of tin and 89.2% of aluminum.

Further, the preparation method of the magnesium-aluminum alloy composite material comprises the following steps: weighing quantitative silicon, iron, manganese, magnesium, nickel, copper, zinc, tin and aluminum metals according to the proportion, putting the metals into a smelting furnace, pushing materials in the furnace to be scattered and pushed to be flat by a push rod so as to be uniformly heated, closing a furnace door of the smelting furnace, starting a fan to ignite, heating to 750 ℃ for melting, then heating to 1000 ℃ and preserving heat for 30min so as to completely melt the metals, opening the furnace door to fully stir the metal solution in the furnace in an N-type mode, and stirring for 20 min.

Further, the preparation method of the magnesium-aluminum alloy composite material comprises the following steps: spraying a small amount of slag removing agent on the surface of the molten metal according to the proportion of 0.3%, standing for 15min, then only stirring with an iron stick, fully stirring the molten metal and the slag removing agent in an N-shaped mode for 30min, measuring the temperature in the furnace, transferring when the temperature reaches the transferring temperature, opening a sub furnace door by 10cm, completely opening a main furnace eye, slowly transferring, closing the furnace eye after the transferring is finished, and cleaning the flow channel.

Further, the preparation method of the magnesium-aluminum alloy composite material comprises the following steps: refining the molten metal for 30min after transferring, preheating the mold by using the molten metal to heat the mold to about 150 ℃, controlling the flow of the molten metal by using an iron plug rod with a sleeve to uniformly flow into the mold, cooling the mold by using clear water at 100 ℃, and spraying a release agent on the surface of the cast ingot to release the cast ingot;

and (3) stamping or die-casting the prepared magnesium-aluminum alloy composite material for shaping, passivating the surface of the magnesium-aluminum alloy composite material, and polishing and coating the surface of the magnesium-aluminum alloy composite material.

Further, the polyurethane contains 35% of low molecular weight polyether; 48% of toluene diisocyanate and 17% of trimethylolpropane.

Further, the preparation method of the polyurethane comprises the following steps: pouring a certain amount of low molecular weight polyether into a three-neck flask, uniformly stirring and dehydrating in vacuum, wherein the dehydration time is 5h, adding prepared trimethylolpropane as a chain extender, carrying out a curing reaction at a constant temperature of 80 ℃, the reaction time is about 5h, slowly adding toluene diisocyanate according to a proportion, standing for 30min at 60 ℃ and 70 ℃ respectively during the addition because the toluene diisocyanate and the low molecular weight polyether can generate violent exothermic reactions, waiting for the solution to react stably and continue to be added, and finally reacting for 3h at 80 ℃ to obtain polyurethane, and molding the polyurethane.

Example two:

referring to fig. 1-3, a cart caster with a steering positioning brake mechanism includes a caster body 100 and a steering positioning device 200, the caster body 100 includes a fixing post 130, a first fixing ring 140 and a second fixing ring 150, an inner surface of the first fixing ring 140 is welded to an outer surface of the fixing post 130, the steering positioning device 200 includes a steering post 210, a universal shaft 220 and a fixing plate 230, an inner surface of the second fixing ring 150 is welded to an outer surface of the steering post 210, the universal shaft 220 is rotatably engaged with the steering post 210, and a lower surface of the fixing plate 230 is welded to an upper surface of the universal shaft 220.

Further, truckle main part 100 still includes polyurethane truckle 110, axis of rotation 120 and bumper 160, two polyurethane truckles 110 all with axis of rotation 120 swivelling joint, fixed column 130 lower surface and the outer surface welding of axis of rotation 120, the solid fixed ring of first 140 and the solid fixed ring of second 150 upper surfaces all are equipped with the mounting hole, a plurality of bumper 160 are connected with a plurality of mounting holes respectively, the material of making polyurethane truckle 110 is polyurethane, make the truckle have the characteristic of high wear-resisting and high resistance to compression.

Further, the steering positioning device 200 further includes a first fixing block 240, a second fixing block 250, a push rod 260 and a push plate 270, wherein one side surface of the first fixing block 240 is welded to the outer surface of the steering column 210, one side surface of the second fixing block 250 is welded to the outer surface of the universal shaft 220, through holes are formed in the upper surfaces of the first fixing block 240, the second fixing block 250 and the fixing plate 230, the push rod 260 is connected to the through holes, the lower surface of the push plate 270 is connected to the upper surface of the push rod 260, and the steering positioning device 200 is used for fixing the direction of the polyurethane caster 110 so that the polyurethane caster can rotate or move directionally at will.

Example three:

aiming at the high strength of the magnesium-aluminum alloy material, the magnesium-aluminum alloy material is selected, preferably, the magnesium-aluminum alloy material comprises 4% of silicon, 0.4% of iron, 0.5% of manganese, 0.3% of magnesium, 0.3% of nickel, 4% of copper, 1% of zinc, 0.3% of tin and 89.2% of aluminum in percentage, the polyurethane material is selected, and the polyurethane material comprises 35% of low molecular weight polyether; 48% of toluene diisocyanate and 17% of trimethylolpropane, and the caster made of the magnesium-aluminum alloy and polyurethane has the advantages of convenient movement, better wear resistance and pressure resistance and stronger bearing capacity compared with a common rubber caster, and meanwhile, the caster can move in a direction changing or fixing direction by penetrating the first fixing block 240 and the second fixing block 250 through the push rod 260, so that the use is more convenient.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.