A kind of Novel elastic stirring blade for concrete hopper
Technical field
The present invention relates to a kind of mechanical agitation mechanism, particularly relate to a kind of Novel elastic stirring blade for concrete hopper.
Background technology
Concrete is generally the material of the semi-fluid condition that mixed by aggregate (stone etc.), cement, water etc.Wherein, the diameter of aggregate (stone etc.) is often not of uniform size.In Practical Project, often use concrete pump with concrete conveyance in the engineering machinery of assigned address, such as concrete mixer, Vehicular concrete pump truck and towed concrete pump etc.
When transportation and use, concrete need to be stirred by agitating device in hopper.Hopper claims again loading head, is a container that holds pre-pump concrete; Be provided with agitating device in hopper, agitating device generally is comprised of stirring motor, shaft and stirring vane, is a kind of device that prevents concrete disintegration in hopper, changes the hopper inner concrete flow direction.Particularly, the concrete in the concrete pump hopper is mainly it to be stirred by stirring vane by agitating device, prevents its segregation and buildup.
when stirring, the aggregate that diameter is larger (stone etc.) often easily is stuck between stirring vane and hopper, because three's quality is hardness of matter, stirring vane for example, hopper mainly is made by metal, when the design of stirring vane outward flange and hopper inwall gap during less than the aggregate diameter, there is the stuck risk between stirring vane and hopper inwall of aggregate, further may cause the wearing and tearing too early of stirring vane and hopper or local extrusion damage or stirring vane to cause stuck can't the rotation because aggregate is excessive, even can reduce the service life of each components and parts of agitating device and hopper or damage in the short period of time above-mentioned parts.
Therefore, in order to prevent the appearance of above-mentioned operating position, generally can be with the outward flange of stirring vane and larger (gap be stirred generally greater than 40mm by domestic manufacturer, and producer of offshore company is according to user's operating position, generally at least greater than 25mm) of the gap design between hopper.But some technical problems that excesssive gap brings again, routine structure described above cause the concrete on the hopper inwall easily to can not get stirring fully possibly, thereby affect concrete mobility, even cause the realistic problems such as buildup.
At present, both at home and abroad each concrete production producer stirs fully for guaranteeing the hopper inner concrete, prevents buildup, all carries out optimal design from agitating device and hopper design, reduce the concrete-agitating dead angle as far as possible, improve the mobility of hopper inner concrete and the uniformity of stirring.As increase stirring vane quantity, local increase the preventing materials accumulation plate, optimize the hopper internal structure and make it more the measures such as streamline.
Both at home and abroad the technical scheme that generally adopts of each concrete production producer is: 1, stirring vane is metal material and makes; 2, the gap is stirred in change: the gap is stirred generally greater than 40mm by domestic manufacturer, and producer of offshore company is according to user's operating position, generally at least greater than 25mm.3, increase stirring vane quantity: increase stirring vane quantity according to space situation in stirring motor and hopper, general left-right symmetry is arranged in pairs.
But, no matter be to change blade shape, still increase blade quantity and all can't fundamentally solve stirring fully and the contradiction of not blocking aggregate.Change the shape of blade, but the material of blade is still hard metal, still can exist and block aggregate, damages the possibility of hopper and agitating device.Increase blade, the zone that is stirred increases, but near the concrete hopper still can not get abundant stirring.
Summary of the invention
The objective of the invention is to propose a kind of Novel elastic stirring blade that is used for concrete hopper of simple in structure, with low cost, successful.
For achieving the above object, the invention provides a kind of Novel elastic stirring blade for concrete hopper, be provided with the shaft that is driven rotation by stirring motor in described concrete hopper, described stirring vane is arranged on shaft, and described stirring vane is being provided with elastic flange at least on the outward flange of described concrete hopper one side.
Preferably, the minimum spacing between described elastic flange and described concrete hopper is 5~20mm.
Preferably, described elastic flange is made by the elasticity nonmetallic materials.
More preferably, described elastic flange is made by polyurethane or abrasive rubber.
Preferably, described elastic flange is a bar shaped flanged structure.
Preferably, described stirring vane comprises at least the first stirring vane and the second stirring vane that is arranged in pairs on shaft.
More preferably, described elastic flange is the dentation flanged structure that the interval arranges.
Further, the elastic flange on described the first stirring vane and the gap, interval between the elastic flange on the second stirring vane and dentation flange are in the spatial complementary position.
Preferably, the gap, interval between described elastic flange is 25~40mm.
Preferably, described stirring vane is made by monoblock elasticity nonmetallic materials, and section is provided with metal reinforcement within it.
Based on technique scheme, advantage of the present invention is:
Because the present invention has adopted elastic flange, when larger aggregate was stuck between stirring vane and concrete hopper, elastic flange just can produce distortion, made aggregate pass through, and unlikely aggregate is stuck, causes the damage of hopper and agitating device.In addition, the present invention also changes the rigidity contact relation when in the past contacting simultaneously between stirring vane, aggregate, hopper inwall, the service life of having improved hopper.And the beneficial effect such as that the present invention also has is simple in structure, with low cost, successful.
Description of drawings
Accompanying drawing described herein is used to provide a further understanding of the present invention, consists of the application's a part, and illustrative examples of the present invention and explanation thereof are used for explaining the present invention, do not consist of improper restriction of the present invention.In the accompanying drawings:
Fig. 1 is the structural representation that the present invention uses state;
Fig. 2 is structure side view shown in Figure 1;
Fig. 3 is the structural representation of an embodiment of the present invention;
Fig. 4 is the structural representation of the first stirring vane in the another kind of embodiment of the present invention;
Fig. 5 be embodiment illustrated in fig. 4 in the structural representation of the second stirring vane.
The specific embodiment
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
Embodiment 1:
Referring to Fig. 1, Fig. 2 and Fig. 3, the present invention shown in it is used for a kind of embodiment of the Novel elastic stirring blade of concrete hopper, be provided with the shaft 3 that is driven rotation by stirring motor 1 in described concrete hopper 4, described stirring vane 2 is arranged on shaft 3, and described stirring vane 2 is being provided with elastic flange 5 at least on the outward flange of described concrete hopper 4 one sides, preferably, described elastic flange 5 is made by the elasticity nonmetallic materials, for example, made by elasticity nonmetallic materials such as polyurethane or abrasive rubbers; Minimum spacing between described elastic flange 5 and described concrete hopper 4 is 5~20mm.
Stirring vane of the present invention can comprise the blade of the various shapes such as helical form, and in the present embodiment, as shown in Figure 3, described elastic flange 5 is a bar shaped flanged structure, namely at metal stirring vane 2 outward flanges, continuous elasticity nonmetallic materials flanged structure is set.This blade is mainly used in the pumping such as concrete spraying vehicle or sprays on the little concrete product of the aggregate such as mortar.
Said structure of the present invention has effectively solved and has stirred fully and do not block technical contradiction between the aggregate requirement.Owing to having adopted elastic flange, when making the present invention in the middle of being applied to concrete hopper, aspect overall structure, minimum spacing between elastic flange 5 and described concrete hopper 4, can be reduced to 5~20mm spacing greater than the 40mm spacing by existing, thereby make the concrete in whole concrete hopper 4 fully to be stirred, and can effectively prevent buildup.
Particularly, when larger aggregate was stuck between stirring vane 2 and concrete hopper 4, elastic flange 5 just can produce distortion, makes aggregate pass through, and unlikely aggregate is stuck, causes the damage of hopper and agitating device.
In addition, the present invention also changes the rigidity contact relation when in the past contacting simultaneously between stirring vane, aggregate, hopper inwall, the service life of having improved hopper.
Embodiment 2:
Referring to Fig. 1, Fig. 2, Fig. 4 and Fig. 5, another kind of preferred embodiment of the present invention shown in it.The difference of the present embodiment and above-described embodiment is, described stirring vane 2 comprises at least the first stirring vane 21 and the second stirring vane 22 that is arranged in pairs on shaft 3.Further, the dentation flanged structure that described elastic flange 5 arranges for the interval, as shown in Figure 4 and Figure 5.Preferably, the elastic flange 51 on described the first stirring vane 21 and the gap, interval between the elastic flange 52 on the second stirring vane 22 and dentation flange are in the spatial complementary position.More preferably, the gap, interval between described elastic flange is 25~40mm.
Particularly, the present embodiment arranges the elasticity nonmetallic materials (as polyurethane, abrasive rubber) of interruption (as zigzag or waveform etc.) at the outward flange of metal stirring vane 2, referring to Fig. 4 and Fig. 5, interruption spatial complementary on two blades, namely the gap, interval between two blades and dentation flange are in the spatial complementary position relationship.
The operation principle of the present embodiment is: shaft 3 drives the first stirring vane 21 and the second stirring vane 22 carries out in the process of stirring movement, spatially, be in the first stirring vane 21 elastic flanges 51 and second stirring vane 22 elastic flanges 52 of complimentary positions relation, just can carry out complementary ground to concrete on every side and fully stir.Therefore, this kind structure of the present embodiment is preferred on the concrete pump product of the larger aggregates of pumping such as concrete pump.
In addition, stirring vane 2 of the present invention can also be made by monoblock elasticity nonmetallic materials, and section is provided with metal reinforcement within it.For example, make stirring vane 2 (can adopt continuous or discrete flanged structure on its outward flange) with the nonmetallic materials of monoblock, section reinforces with metal material within it, can increase thus the local stiffness of blade, realizes too goal of the invention of the present invention.
Obviously, those of ordinary skill in the art can with a kind of Novel elastic stirring blade for concrete hopper of the present invention, consist of various types of rabbling mechanisms.
Should be noted that at last: above embodiment is only in order to illustrate that technical scheme of the present invention is not intended to limit; Although with reference to preferred embodiment, the present invention is had been described in detail, those of ordinary skill in the field are to be understood that: still can modify or the part technical characterictic is equal to replacement the specific embodiment of the present invention; And not breaking away from the spirit of technical solution of the present invention, it all should be encompassed in the middle of the technical scheme scope that the present invention asks for protection.