CN101913504A - Conveying equipment and conveying bent pipe thereof - Google Patents
Conveying equipment and conveying bent pipe thereof Download PDFInfo
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- CN101913504A CN101913504A CN2010102638606A CN201010263860A CN101913504A CN 101913504 A CN101913504 A CN 101913504A CN 2010102638606 A CN2010102638606 A CN 2010102638606A CN 201010263860 A CN201010263860 A CN 201010263860A CN 101913504 A CN101913504 A CN 101913504A
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- pipe
- transporting elbow
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L43/00—Bends; Siphons
- F16L43/001—Bends; Siphons made of metal
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L57/00—Protection of pipes or objects of similar shape against external or internal damage or wear
- F16L57/06—Protection of pipes or objects of similar shape against external or internal damage or wear against wear
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- Rigid Pipes And Flexible Pipes (AREA)
Abstract
The invention discloses a conveying bent pipe and conveying equipment with the conveying bent pipe. The conveying bent pipe comprises an outer pipe and an inner pipe; an adhesive layer is arranged between the outer pipe and the inner pipe; the inner pipe is spliced by at least two inner pipe sections; the end faces of the inner pipe sections form an end face of the inner pipe; and splicing seams among the inner pipe sections and a centre line of the conveying bent pipe are parallel. The provided conveying bent pipe has the advantages of contributing to guaranteeing the adhesion quality, improving the flatness of an inner wall surface of the inner pipe, along with easier manufacture, higher yield, easier guarantee of matching accuracy of the inner pipe and the outer pipe, and capacity of meeting the requirement for mass production. In addition, when the inner pipe sections are subjected to higher impact force, proper displacement can be generated among the inner pipe sections due to the presence of the splicing seams so as to facilitate transferring the impact force to the high-intensity outer pipe and make the outer pipe play a role in protection, so that the impact resistance of the inner pipe and the integral intensity of the conveying bent pipe are improved. Therefore, the conveying bent pipe has the advantages of better manufacturing technology and higher usability.
Description
Technical field
The present invention relates to a kind of correlation technique of delivery pipe, particularly a kind of transporting elbow and the load transfer device that has this transporting elbow.
Background technology
When utilizing concrete pump truck to carry out construction operation, the inwall of its delivery pipe is bearing the erosion and the wearing and tearing of concrete mud, this just makes that the wear resisting property of delivery pipe is very crucial, the height of its wear resisting property not only concerns the length in service life of delivery pipe, also can influence the working stability of concrete pump truck.
Delivery pipe is by carrying straight tube and transporting elbow to be formed by connecting; In use, transporting elbow will bear that concrete mud turns to and the impact that produces; Therefore, the wear resisting property of transporting elbow and intensity become the key factor that influences the delivery pipe bulk life time.In order to improve the wear resisting property of transporting elbow, on material and structure, provide the multiple technologies scheme in the prior art.Below introduce several relatively representative type transporting elbows.
First kind is individual layer integral type bend pipe.This bend pipe is formed by high manganese steel or abrasion resistant alloy casting.Individual layer integral type bend pipe generally improves its wear resisting property by increasing pipe wall thickness and quenching hardness.Owing to increase the supporting power that pipe wall thickness can strengthen whole boom system undoubtedly, be very easy to cause the overload of associated components, produce pipe arrangement and support fracture, jib side plate problems of crack, therefore, bend pipe thickness is restricted.In addition, because bend pipe will bear the pumping high pressure, if the bend pipe quenching hardness is too high, can cause bend pipe embrittlement, and then produce booster, cause safety misadventure, therefore, the bend pipe quenching hardness can not be too high.Thickness and hardness are very restricted the wear resisting property of this bend pipe, can't satisfy the needs of current delivering concrete mud.
Second kind is the double-level-metal bend pipe.Pipe and outer tube in this bend pipe comprises, interior pipe is formed by rich chromium cast iron casting or the material casting preferably of other wear resisting propertys, has higher wear resisting property; Outer tube is formed by low-carbon high strength steel or the higher material casting of other intensity; Outer tube sleeve forms the protective cover that internal pipe has protective effect outside interior pipe.The deficiency of this bend pipe is: the manufacture craft more complicated makes its cost of manufacture than higher; And casting is easy to generate defective, makes bending quality very unstable.
The third is the Ceramic Composite bend pipe.Pipe and outer tube in this bend pipe also comprises, outer tube is that steel or glass-felt plastic are made, interior pipe is formed by the higher ceramic making of wear resisting property.This bend pipe is owing to adopt pipe in the ceramic making, have in light weight, the advantage that wear resisting property is high.According to the difference of Ceramic Composite bend pipe inner tube structure, that the Ceramic Composite bend pipe comprises is SMD, integral type, spliced etc. multi-form.
Patent documentation CN201014117Y discloses a kind of SMD Ceramic Composite bend pipe.The outer tube of this bend pipe is a metallic material, and interior pipe comprises a plurality of less ceramic plates, and ceramic plate is bonded in the outer tube wall face respectively, and forms a complete interior pipe.Utilize the ceramic plate wear resisting property, interior pipe has higher wear resisting property, forms the wearing layer of this bend pipe; The internal pipe of outer tube plays a protective role.But this bend pipe also comes with some shortcomings:
At first, because interior pipe comprises a lot of ceramic plates, when making, need be bonded on the outer tube wall respectively, and bonding driving surface is positioned at the outer tube wall face, makes the production cycle longer, production efficiency is low, and productive costs is higher; Therefore, this bend pipe is not suitable for producing in enormous quantities.
Secondly,, be difficult to guarantee bonding quality, also be difficult to guarantee the planeness of the inner tube wall face that forms by a lot of ceramic plates because bonding driving surface is positioned at outer tube; The inner tube wall surface evenness is lower, will increase the impact of the internal pipe of concrete mud, and this just makes ceramic plate be very easy to come off, and causes the bend pipe partial failure.
Patent documentation CN2720228Y discloses a kind of integral type Ceramic Composite bend pipe, and the outer tube of this bend pipe is a metallic material, and interior pipe is the integral type earthenware pipe.The major defect of this bend pipe is:
At first, the interior pipe that the bulk ceramics bend pipe forms is complex manufacturing technology not only, and in the manufacturing process, uncontrollable factor is a lot, causes its yield rate low, makes that this bend pipe productive costs is higher.
Secondly, in order to guarantee cooperating between outer wall of inner tube and the outer tube wall, need very complicated technological process that this bend pipe is assembled, this just makes very difficulty of this bend pipe assembling; Quality of fit in also being difficult in actual applications guarantee between pipe and the outer tube.
Once more, owing to be difficult to the quality of fit between assurance outer wall of inner tube and the outer tube wall, will have corresponding gap between outer wall of inner tube and outer tube wall, the existence in this gap will inevitably influence the shock resistance of ceramic bend pipe, makes this bend pipe be difficult to obtain long service life.
Patent documentation CN201416721Y provides a kind of spliced Ceramic Composite bend pipe, and the outer tube of this bend pipe is a metallic material, and interior pipe is that ceramic ring is spliced, and links to each other by bonding between interior pipe and outer tube, and the ceramic ring material is an aluminium oxide.The major defect of this bend pipe is:
At first, can have corresponding gap between the inwall of outer wall of inner tube and outer tube, the pipe shock resistance was poor in loop configuration made, unstable product quality.And common aluminium oxide brittleness of ceramics is big, and shock resistance is poor, breaks easily and breaks away from, thereby this bend pipe was lost efficacy in advance, and service life is shorter.
Secondly, because impact that bend pipe mean curvature largest portion is subjected to and wearing and tearing are all the most serious, this part rate of wear soon, easily produces fracture phenomena; The whole service life of the bend pipe that this not only reduces also causes the waste of stupalith.
Therefore, how in the manufacture craft that improves transporting elbow, improve its in-use performance and remain the technical barrier that those skilled in the art face.This technical barrier does not exist only in the delivery pipe of delivering concrete mud, also is present in ash-slag delivery etc. and has in the transporting elbow of similar quality with concrete mud.
Summary of the invention
At the problems referred to above, first purpose of the present invention is to provide a kind of transporting elbow, and this transporting elbow has better manufacturing technology, has higher in-use performance simultaneously.
Providing on the basis of above-mentioned wear resistant conveying pipe, second purpose of the present invention has been to provide a kind of load transfer device that comprises this transporting elbow.
In order to realize above-mentioned first purpose, transporting elbow provided by the invention comprises outer tube and interior pipe, has adhesive linkage between pipe and the outer tube in described, described in pipe be spliced by pipe bar at least two, a plurality of in the end faces of pipe bars form in the end face of pipe; Splicing seams in described between the pipe bar is parallel with the line of centers of described transporting elbow.
Optionally, in described pipe by two radial sections be semiorbicular in the pipe bar be spliced.
Optionally, the pipe bar is spliced by the tactic semi-ring of a plurality of line of centerss along described transporting elbow in described.
Optionally, a semi-ring of a described interior pipe bar is relative with a semi-ring of another described interior pipe bar, and forms a domain.
Optionally, the circumferential tangent plane of a semi-ring of a described interior pipe bar is corresponding with the splicing seams between another interior two semi-rings of managing in bar.
Optionally, in described, manage in the bar, on the centerline direction of described transporting elbow, the semi-ring of the resistance to abrasion of the semi-ring of the predetermined quantity in the middle of being positioned at and the predetermined quantity that is positioned at two ends is respectively by first material and second material, and the wear resisting property of described first material and shock resistance are higher than the wear resisting property of second material and resist performance.
Optionally, described first material is fiber reinforcement technology pottery or high abrasion metal, and described second material is antifriction metal (AFM) or wear-resistant ceramic.
Optionally, the thickness of the outer arc of described interior pipe part is greater than the thickness of its inner arc part; On the centerline direction of described transporting elbow, the thickness of the midway location of described outer arc part is greater than the thickness of the end positions of this outer arc part.
Optionally, described semi-ring is the part that line of centers is the straight tube of straight line.
In order to realize above-mentioned second purpose, load transfer device provided by the invention comprises delivery pipe, and described delivery pipe comprises straight tube and bend pipe, and described bend pipe is above-mentioned any transporting elbow.
In the transporting elbow provided by the invention, pipe is spliced by pipe bar in a plurality of in it.Compare with existing SMD ceramic composite pipe, interior pipe is spliced by pipe bar in a plurality of, can reduce bonding number of times, shorten the production cycle of transporting elbow, enhance productivity, reduce production costs, make this transporting elbow can satisfy the needs that carry out Quantity production; Simultaneously, interior pipe bar also helps the assurance bonding quality, improves the smoothness of inner tube wall face, reduces the resistance to flow of concrete mud and the impact of the internal pipe of concrete mud, the service life of pipe in prolonging.Compare with integral type Ceramic Composite bend pipe, interior pipe bar is made and is more prone to, and yield rate is higher; Simultaneously, the quality of fit of pipe and outer tube makes things convenient for the assembling of transporting elbow in can more easily guaranteeing; make between outer pipe internal surface and the inner tube outer surface and better cooperate; give full play to the defencive function of outer tube, the shock resistance of pipe in improving, and then the service life of improving transporting elbow.Compare with existing spliced ceramic composite pipe, on the cross section vertical with the transporting elbow line of centers, the pipe bar is fixed by adhesive linkage and outer tube respectively in each; Reliability of fixation between pipe and the outer tube makes outer tube bring into play the defencive function of internal pipe better in can improving; Simultaneously, utilize splicing seams between pipe bar in each, for the deformation of interior pipe bar provides bigger leeway, the pipe bar can play a role respectively in making, and then the whole shock resistance of pipe in improving, improve the bulk strength of transporting elbow, overcome the deficiency of the whole impact resistance difference of existing loop configuration.In a word, compare with the transporting elbow that prior art provides, transporting elbow provided by the invention has better manufacturing technology, has higher in-use performance simultaneously.
In further technical scheme, the splicing seams between the interior pipe bar is parallel with the line of centers of described transporting elbow.In this technical scheme, the pipe bar extends along predetermined camber line in each, not only makes the technology of pipe bar in making simpler, and the pipe bar is bonding in also helping, reliability of fixation between pipe and the outer tube in improving.
In further technical scheme, described in pipe be spliced by pipe bar in two.This technical scheme has improved the making workability of transporting elbow by the mode of pipe piece quantity in reducing; The more important thing is that the pipe bar is spliced to form interior pipe mutually in two, the radial section of interior pipe bar is respectively semi-loop; Pipe and outer tube reliability of fixation in can improving so on the one hand can utilize the gap that exists between the pipe bar in two on the other hand, for the deformation of interior pipe bar provides corresponding leeway, and the toughness of pipe in improving, and then improve the bulk strength of transporting elbow.
In further technical scheme, described interior pipe bar is spliced by a plurality of semi-rings.In this technical scheme; pipe bar in a plurality of semi-rings are spliced to form; can avoid on the centerline direction like this, influencing each other between the interior pipe bar different piece; each semi-ring of pipe bar is fixed with outer tube better by adhesive linkage in making; improve the degree of engagement of interior pipe and outer tube, better bring into play the defencive function of outer tube.
In further technical scheme, a semi-ring of a described interior pipe bar is relative with a semi-ring of another described interior pipe bar, and forms a domain.In this technical scheme, the circumferential direction that axially reaches at interior pipe all has corresponding splicing seams, can fix by bonding each semi-ring and the outer tube of better making so on the one hand, can utilize the splicing seams between the each several part on the other hand, deformation for interior pipe bar part provides bigger leeway further, the shock resistance of pipe in improving, and then the bulk strength of raising transporting elbow; Because the quantity of each semi-ring of interior pipe is less than SMD ceramic composite pipe far away, can overcome the deficiency that SMD ceramic composite pipe exists.
In further technical scheme, the circumferential tangent plane of a semi-ring of a described interior pipe bar is corresponding with the splicing seams between another interior two semi-rings of managing in bar.This technical scheme can be in the axial direction, and the pipe each several part is associated in making, pipe integral rigidity in improving, and pipe has suitable rigidity and shock resistance in making.
In further technical scheme, in described, manage in the bar, on centerline direction, the semi-ring of the resistance to abrasion of the semi-ring of the predetermined quantity in the middle of being positioned at and the predetermined quantity that is positioned at two ends is respectively by first material and second material, and the wear resisting property of described first material and shock resistance are higher than the wear resisting property and the shock resistance of second material.The operating cycles of pipe pars intermedia makes full use of high-abrasive material in can improving like this, improves the whole service life of transporting elbow.
In further technical scheme, the thickness of the outer arc part of interior pipe is greater than the thickness of its inner arc part; On centerline direction, the thickness of the midway location of described outer arc part is greater than the thickness of this outer arc part end positions.Can make the transporting elbow rate of wear have longer operating cycles in the position faster like this, realize the balanced life of transporting elbow, make full use of high-abrasive material, improve the whole service life of transporting elbow.
In further technical scheme, described semi-ring is the part of straight tube.Just can obtain each semi-ring by the cutting straight tube like this; Has higher production efficiency and make straight tube than making bend pipe; Can reduce the cost of manufacture of transporting elbow so significantly.
Because above-mentioned transporting elbow has above-mentioned technique effect, comprises that the load transfer device of this transporting elbow also has corresponding technique effect.
Description of drawings
Fig. 1 is the longitudinal cross-section scheme drawing of the transporting elbow that provides of the embodiment of the invention one;
Fig. 2 is that A among Fig. 1 is to view;
Fig. 3 is a B-B sectional structure chart among Fig. 1;
Fig. 4 is the longitudinal cross-section scheme drawing of the transporting elbow that provides of the embodiment of the invention two;
Fig. 5 is the C-C sectional structure scheme drawing among Fig. 4;
Fig. 6 is the radial section scheme drawing of the transporting elbow that provides of embodiment three, and the slice location of this figure is identical with the slice location of Fig. 5 and projecting direction;
Fig. 7 is the longitudinal cross-section scheme drawing of the transporting elbow that provides of the invention process four;
Fig. 8 is that embodiment four provides in the transporting elbow, the stressed principle schematic of interior pipe;
Fig. 9 is in the transporting elbow that provides of the embodiment of the invention five, the structural representation of interior pipe;
Figure 10 is in the transporting elbow that provides of the embodiment of the invention six, the structural representation of interior pipe;
Figure 11 is the schematic diagram of pipe splicing part in obtaining by the cutting straight tube.
The specific embodiment
Describe the present invention below in conjunction with accompanying drawing, the description of this part only is exemplary and explanatory, should any restriction not arranged to protection scope of the present invention.Should be noted that: the transporting elbow that provides among the present invention is not limited to delivering concrete, the unclassified stores that also can be applied to ash-slag delivery, other mud or have similar performance to concrete mud.
For transporting elbow, its line of centers is a curve, and this curve is positioned at a longitudinal plane, for the convenience of describing; In the present specification, the cross section of dissecing formation along the plane vertical with this curve is called radial section, and the cross section of dissecing formation along above-mentioned longitudinal plane is called the longitudinal cross-section.
Please refer to Fig. 1 and Fig. 2, Fig. 1 is the longitudinal cross-section scheme drawing of the transporting elbow that provides of the embodiment of the invention one, and Fig. 2 is that A among Fig. 1 is to view.This transporting elbow comprises flange 100, outer tube 200, adhesive linkage 300, interior pipe 400 and wear-resistant sleeve 500, and the line of centers of this transporting elbow is O-O.In outer tube 200 is enclosed within outside the pipe 400, adhesive linkage 300 and is adhesively fixed outer tube 200 and interior pipe 400 together between outer tube 200 and interior pipe 400, forms the pipe shaft of managing transporting elbow.Flange 100 is fixed on the pipe shaft two ends, and flange 100 can be fixedly linked with outer tube 200, also can be fixedly linked with interior pipe 400 simultaneously.In flange 100 inboards, also be provided with and the fixing wear-resistant sleeve 500 of flange 100 internal faces, wear-resistant sleeve 500 is inner inconsistent with interior pipe 400 ends.The effect of wear-resistant sleeve 500 is to improve the wear resisting property of transporting elbow end inwall.
In conjunction with Fig. 1, please refer to Fig. 3, Fig. 3 is a B-B sectional structure chart among Fig. 1.Difference from prior art is: interior pipe 400 is spliced by a plurality of interior pipe bars 410, and manages 400 end face in the end face of pipe bars 410 forms in a plurality of, and promptly pipe bar 410 extends to the other end from interior pipe 400 1 ends in each; In the optimized technical scheme, the splicing seams between the interior pipe bar 410 is that O-O is parallel with line of centers; Like this, interior pipe 400 just is spliced into by a plurality of interior pipe bars 410 that extend along its centerline direction.In this example, pipe bar 410 orders are spliced into a complete interior pipe 400 along the circumferential array of outer tube 200 inwalls in four, form four splicing seams S.The material of pipe bar 410 can have multiple choices in making, it can be the higher metallic material of wear resisting property, such as: Triple steel, rich chromium cast iron, tool steel, wear-resisting alloy steel or the like, it also can be stupalith with corresponding wear resisting property, pottery can be aluminium oxide ceramics or fiber reinforcement technology pottery or the like, wherein, the basis material of fiber reinforcement technology pottery can be stupaliths such as aluminium oxide, zirconia, carborundum, aluminium nitride, mullite, titanium carbide, silicon nitride; Strengthening toughened fiber can be ceramic-fibre, glass fibre, carbon fiber, metal fibre or the like.In order to reduce the weight of transporting elbow, preferably to small part, manage bar by suitable ceramic material.
Compare with existing SMD multiple unit tube, among the embodiment one, interior pipe 400 is made up of a plurality of interior pipe bars 410 that extend along its centerline direction, pipe bar 410 in each is bonded on outer tube 200 inwalls, just can forms interior pipe, and then can reduce 400 o'clock bonding number of times of pipe in the formation, shorten the production cycle of transporting elbow, enhance productivity, reduce production costs, and can satisfy needs of scale production; Simultaneously, the interior pipe bar 410 that extends along the transporting elbow center position also helps the assurance bonding quality, the planeness of pipe 400 internal faces in improving, and then for the resistance to flow that reduces concrete mud and concrete mud internally the impact of pipe 400 prerequisite is provided.Compare with the integral type composite-curve, the interior pipe bar 410 in the present embodiment one is made and is more prone to, and yield rate is higher, and production efficiency is higher, and the transporting elbow that makes embodiment one provide has better manufacture craft; Simultaneously, the quality of fit in can more easily guaranteeing between pipe 400 and the outer tube 200 makes between outer tube 200 inside faces and interior pipe 400 outside faces better to cooperate; This not only can make things convenient for the assembling of transporting elbow, can also give full play to the defencive function of pipe 400 in 200 pairs of the outer tubes, the shock resistance of pipe 400 in improving, and then improve the bulk strength of transporting elbow, prolong the service life of transporting elbow.Compare with existing spliced multiple unit tube, on the cross section vertical with line of centers O-O, pipe bar 410 is fixing with outer tube 200 by adhesive linkage 300 respectively in each; Reliability of fixation between pipe 400 and the outer tube 200 in can improving like this makes outer tube 200 bring into play the internally defencive function of pipe 400 better; Simultaneously, utilize the splicing seams between the pipe bar 410 in each, for the deformation of interior pipe bar 410 provides bigger leeway, pipe bar 410 can play a role respectively in making, the shock resistance of pipe 400 in improving, and then improve the bulk strength of transporting elbow, overcome the deficiency of the whole impact resistance difference of existing loop configuration.Therefore, compare with the transporting elbow that prior art provides, the transporting elbow that present embodiment provides has better manufacturing technology, has higher in-use performance simultaneously.
Splicing seams between the interior pipe bar 410 is not limited to parallel with the line of centers O-O of described transporting elbow, its splicing seams can be the zigzag shape attitude, and the line of centers of this helix line overlaps with line of centers O-O, makes the shape extension in the shape of a spiral of above-mentioned interior pipe bar 410, also can realize purpose of the present invention.
As Fig. 4 and Fig. 5, Fig. 4 is the longitudinal cross-section scheme drawing of the transporting elbow that provides of the embodiment of the invention two, and Fig. 5 is the C-C sectional structure scheme drawing among Fig. 4.In pipe 400 can comprise in two pipe bar 410, and make in two pipe bar 410 symmetrical, the left-half of pipe 400 and right outer part in forming respectively, two splicing seams S of two parts formation.When interior pipe 400 only comprised two parts, this structure can be coordinated the relation between manufacture craft and the in-use performance further; The more important thing is, make in two pipe bar 410 symmetrical, in the radial section of transporting elbow, the radial section of pipe bar 410 is respectively semi-loop in two; Pipe 400 and outer tube 200 reliability of fixation in can improving so on the one hand, can utilize the gap that exists between the pipe bar 410 in two on the other hand, deformation for interior pipe bar 410 provides suitable leeway further, the shock resistance of pipe 400 in improving, and then the bulk strength of raising transporting elbow.When interior pipe 400 comprises in two pipe bar 410, the radial section of pipe bar 410 is not limited to semi-circular structure in two, such as, the radian that can make the radial section of pipe bar 410 in is less than 180, the radian of pipe bar 410 radial sections in another is spent greater than 180, and guarantee that the two can be spliced into a complete interior pipe; But interior bar pipe 410 radial section radians are advisable to be not less than 90 degree, so that pipe bar 410 can be interlocked on two, make to produce the application force that supports mutually between the two, and pipe 400 has certain rigid in guaranteeing.
Also can there be multiple choices the position of the splicing seams of pipe bar 410 in two.As shown in Figure 6, this figure is the radial section scheme drawing of the transporting elbow that provides of embodiment three, and the slice location of this figure is identical with the slice location of Fig. 5 and projecting direction.Among this embodiment, interior pipe 400 comprises in two pipe bar 410, and makes and manage 400 outer arc partial sum inner arc part in pipe bar 410 forms respectively in two, forms two splicing seams S equally, and in this example, splicing seams S is a curve shape.The transporting elbow that this embodiment provides can produce corresponding technique effect equally.
On the basis of embodiment two, the invention provides another kind of transporting elbow.Please refer to Fig. 7, this figure is the longitudinal cross-section scheme drawing of the transporting elbow that provides of the invention process four.Be that with the difference of embodiment two the interior pipe bar 410 that two radial sections are semi-loop is spliced along the tactic semi-ring 411 of line of centers O-O direction by a plurality of again respectively.Among this embodiment; the pipe bar can be avoided on the centerline direction in a plurality of semi-rings 411 were spliced to form; influencing each other between interior pipe bar 410 different pieces; each semi-ring 411 of pipe bar 410 is fixing with outer tube 200 better by adhesive linkage 300 in making; the degree of engagement of pipe 400 and outer tube 200 in improving; the defencive function of better performance outer tube 200, the bulk strength of raising transporting elbow.In pipe bar 410 forms respectively in two during the outer arc partial sum inner arc part of pipe, manage bar 410 in two and also can be spliced along the tactic semi-ring 411 of line of centers O-O direction by a plurality of.
In order to improve the rigidity of interior pipe 400, can also make the semi-ring 410 of pipe bar 410 in two corresponding one by one, make the semi-ring 411 of pipe bar 410 in and domain of semi-ring 411 relative formation of another interior pipe bar 410.Please refer to Fig. 8, this figure is that embodiment four provides in the transporting elbow, the stressed principle schematic of interior pipe.Semi-ring 411a is relative with semi-ring 411b, and the circumferential tangent plane of semi-ring 411a is relative with the circumferential tangent plane of semi-ring 411b, fastens to form a domain, and the two buckling surface forms corresponding splicing seams, is full of adhesives in this gap.Be subjected to outside pressure F at semi-ring 411a and do the time spent, because semi-ring 411a keeps separating with semi-ring 411b, can't give semi-ring 411b with force transmission, semi-ring 411a exerts pressure to adhesive linkage 300, and by adhesive linkage 300 pressure F is passed to outer tube 200; So not only can give full play to the protective effect of pipe 400 in 200 pairs of the outer tubes, and the shock resistance of pipe 400 in can improving, and then improve the bulk strength of transporting elbow.In the transporting elbow of this structure because interior pipe bar 410 forms by a plurality of parts, also have processing technology require low, the production efficiency height, crudy is the advantage of assurance easily.
In addition, also can on centerline direction, the semi-ring 411 of pipe bar 410 in two be interlaced; As shown in Figure 9, this figure is in the transporting elbow that provides of the embodiment of the invention five, the structural representation of interior pipe.Among this embodiment, in forming in one of pipe 400 outer arcs part the circumferential tangent plane of the semi-ring 411c of pipe bar 410 with form in the pipe 400 inner arcs part semi-ring 411d and the splicing seams between the semi-ring 411e of pipe bar 410 corresponding, the circumferential tangent plane while of semi-ring 411c is corresponding with the circumferential tangent plane of part of semi-ring 411d and semi-ring 411e.The rigidity of pipe 400 can also be associated a plurality of semi-rings 411 on line of centers O-O direction in so not only can improving, the integral rigidity of pipe 400 in improving.Certainly, the semi-ring 411 of pipe bar 410 structure that interlaces also can be applied in and manages 400 the left-half and the situation of right half part in pipe bar 410 forms respectively in two in two.
In addition, two adjacent semi-rings are upwards interlaced in week.As shown in figure 10, this figure is in the transporting elbow that provides of the embodiment of the invention six, the structural representation of interior pipe.Splicing seams and semi-ring 411f axial end in semi-ring 411g in the outer arc part and the inner arc part between the semi-ring 411h are corresponding, and the axial end while of semi-ring 411f is corresponding with the section axial end face tangent plane of semi-ring 411g and semi-ring 411h.
For transporting elbow, in use, under the identical situation of material, the rate of wear of interior pipe 400 and impulsive force are also inconsistent; In general, the rate of wear of the outer arc of interior pipe 400 part and impulsive force are greater than the rate of wear and the impulsive force of its inner arc part; On line of centers O-O direction, the rate of wear of the midway location of outer arc part is greater than the rate of wear of this outer arc part end positions., can also internally manage 400 and carry out respective handling for this reason,, improve the whole service life of transporting elbow to make full use of high-abrasive material according to the interior pipe 400 each several part rates of wear.Two kinds of processing modes provided by the invention.
First kind of processing mode is: under the identical situation of the material of interior pipe 400, the thickness of the outer arc of pipe 400 part is greater than the thickness of its inner arc part in can making; Simultaneously, on line of centers O-O direction, make the thickness of the midway location thickness of outer arc part greater than this outer arc part end positions.When the transporting elbow that interior pipe 400 structures provide for the various embodiments described above, can be by selecting pipe bar 410 realizations in the different-thickness, perhaps select the semi-ring 411 of different-thickness to realize, interior pipe 400 inwall planeness can realize by the adhesive linkage 200 that different-thickness is set, and also can make interior pipe bar 410 or semi-ring 411 thickness own be gradual manner and change.
Second kind of processing mode is that the different piece of interior pipe 400 adopts different materials to make.In utilizing the above-mentioned transporting elbow that comprises semi-ring 411, this mode is very easy to realize, promptly selects the material of different wear resisting propertys at the semi-ring 411 of different positions for use.Such as, when the outer arc part of pipe 400 was with the inner arc part in pipe bar 410 formed respectively in two, can select the semi-ring 411 of the higher first material outer arc part of wear resisting property and shock resistance for use, select the semi-ring 411 of the lower second material inner arc part of wear resisting property and shock resistance for use; Simultaneously, select for use the first higher material of wear resisting property and shock resistance near outer arc part semi-ring 411 two end portions, predetermined quantity, select for use the second lower material of wear resisting property and shock resistance near outer arc part semi-ring 411 two end portions, predetermined quantity.In addition, also can be with the semi-ring 411 of the semi-ring 411 of the predetermined quantity in the middle of being positioned at and the predetermined quantity at the two ends higher and lower material of wear resisting property by wear resisting property respectively.
In addition, thickness also can be in conjunction with carrying out, with thickness and the wear resisting property in the pipe 400 in coordinating with the selection of material.Wherein, second material that wear resisting property is lower can be selected for use as wear-resistant ceramic material or other wear-resistant metal materials such as aluminium oxide, zirconia, mullite, carborundum, boron carbide, aluminium nitride, the first higher material of wear resisting property and shock resistance can be Triple steel, mould steel, wear-resisting alloy steel, the contour antifriction metal (AFM) of rich chromium cast iron, perhaps material such as fiber reinforcement technology pottery, high tenacity pottery.
The concrete mode that forms above-mentioned semi-ring 411 has multiple, can obtain by the straight forming mode, also can obtain by the straight tube patterning method.
The straight forming mode is to be semi-ring or domain structure with metal or forming process of ceramics directly; By cutting, the domain is cut into semi-loop again.This method technology is simple, clout is less.
The straight tube patterning method promptly obtains above-mentioned semi-ring 411 on the straight tube basis that a line of centers is a straight line, the semi-ring of formation is the part of this straight tube.This method may further comprise the steps:
The first step: utilize suitable material to make straight tube earlier, make ceramic straight tube or metal straight pipe.
Second step:, above-mentioned straight tube is cut according to the angular relationship between interior canal curvature angle and the semi-ring.Please refer to Figure 11, this figure is the schematic diagram of pipe splicing part in obtaining by the cutting straight tube.As shown in the figure, the acute angle that forms between each cut surface Q and the straight tube line of centers equates, and adjacent cut surface Q is with respect to a plane symmetry vertical with the straight tube line of centers, and the longitudinal cross-section of the domain that cutting forms is trapezoidal.
The 3rd step, the domain that cutting forms is cut apart by the plane of its line of centers on the edge more again, form two semi-rings 411.The angle of cutting apart the domain can be according to the distribution of interior pipe bar 410 in interior pipe, and the needs that reach splicing semi-ring 411 are determined.After the cutting,, be spliced into interior pipe 400 according to modes such as Fig. 8, Fig. 9 or Figure 10 according to cutting apart the angle difference.
Providing on the basis of above-mentioned transporting elbow, the present invention also provides a kind of load transfer device, especially for the load transfer device of delivering concrete, load transfer device can be vehicle-mounted pumping equipment, drag formula pumping equipment, pump truck, comprise the stirring pump truck and the boom of mixer barrel.This load transfer device comprises the delivery pipe of convey materials, and delivery pipe comprises straight tube and bend pipe, and bend pipe can be above-mentioned any transporting elbow.Because above-mentioned transporting elbow has above-mentioned technique effect, comprises that the load transfer device of this transporting elbow also has corresponding technique effect.
The above only is a preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (11)
1. transporting elbow, comprise outer tube (200) and interior pipe (400), has adhesive linkage between pipe (400) and the outer tube (200) in described, it is characterized in that, pipe (400) is spliced by managing bar (410) at least two in described, a plurality of in the end faces of pipe bars (410) form the end face of interior pipe (400).
2. transporting elbow according to claim 1 is characterized in that, the splicing seams between the described interior pipe bar (410) is parallel with the line of centers (O-O) of described transporting elbow.
3. transporting elbow according to claim 2 is characterized in that, described interior pipe (400) is that semiorbicular interior pipe bar (410) is spliced by two radial sections.
4. transporting elbow according to claim 3 is characterized in that, described interior pipe bar (410) is spliced by a plurality of line of centerss along described transporting elbow (O-O) tactic semi-rings (411).
5. transporting elbow according to claim 4 is characterized in that, a semi-ring (411) of a described interior pipe bar (410) is relative with a semi-ring (411) of another described interior pipe bar (410), and forms a domain.
6. transporting elbow according to claim 4 is characterized in that, the circumferential tangent plane of a semi-ring (411) of a described interior pipe bar (410) is corresponding with the splicing seams between another interior two semi-rings (411) of managing in bar (410).
7. transporting elbow according to claim 4, it is characterized in that, in described, manage in the bar (410), on line of centers (O-O) direction of described transporting elbow, the resistance to abrasion of the semi-ring (411) of the predetermined quantity in the middle of being positioned at and the semi-ring (411) that is positioned at the predetermined quantity at two ends are respectively by first material and second material, and the wear resisting property of described first material and shock resistance are higher than the wear resisting property of second material and resist performance.
8. transporting elbow according to claim 7 is characterized in that, described first material is fiber reinforcement technology pottery or high abrasion metal, and described second material is antifriction metal (AFM) or wear-resistant ceramic.
9. transporting elbow according to claim 4 is characterized in that, the thickness of the outer arc part of described interior pipe (400) is greater than the thickness of its inner arc part; On line of centers (O-O) direction of described transporting elbow, the thickness of the midway location of described outer arc part is greater than the thickness of the end positions of this outer arc part.
10. according to each described transporting elbow of claim 4-9, it is characterized in that described semi-ring (411) is the part that line of centers is the straight tube of straight line.
11. a load transfer device comprises delivery pipe, described delivery pipe comprises straight tube and bend pipe, it is characterized in that, described bend pipe is each described transporting elbow of claim 1-10.
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| CN2010102638606A CN101913504A (en) | 2010-08-24 | 2010-08-24 | Conveying equipment and conveying bent pipe thereof |
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| CN2010102638606A CN101913504A (en) | 2010-08-24 | 2010-08-24 | Conveying equipment and conveying bent pipe thereof |
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| CN101913504A true CN101913504A (en) | 2010-12-15 |
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| CN2010102638606A Pending CN101913504A (en) | 2010-08-24 | 2010-08-24 | Conveying equipment and conveying bent pipe thereof |
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| WO2012083647A1 (en) * | 2010-12-24 | 2012-06-28 | 湖南三一智能控制设备有限公司 | Concrete conveying pipe and manufacturing method thereof |
| CN103101769A (en) * | 2012-12-28 | 2013-05-15 | 苏州昭人纺织有限公司 | Conveying mechanism for textile raw materials |
| CN103411047A (en) * | 2012-10-16 | 2013-11-27 | 钱中山 | Abrasion-resistant pressure-proof composite pipeline |
| CN106870876A (en) * | 2017-02-21 | 2017-06-20 | 无锡康克瑞管业科技有限公司 | Concrete conveyance double-layer wear-resistant pipe |
| JP2018511764A (en) * | 2015-03-12 | 2018-04-26 | 周朝▲輝▼ＺＨＯＵ， Ｚｈａｏｈｕｉ | Two-part or multi-part double-type wear and shock resistant pipe and method for producing the same |
| CN108506625A (en) * | 2018-03-15 | 2018-09-07 | 长沙市添芸机械有限公司 | A kind of split-type conveying hinge elbow |
| CN109059600A (en) * | 2018-04-16 | 2018-12-21 | 陈剑雄 | Silicon carbide-metal composite rib heat exchanging pipe and preparation method thereof |
| EP3333470A4 (en) * | 2015-08-08 | 2019-05-08 | Zhaohui Zhou | Double-layered, double-piece automatic filling wear-resistant elbow for concrete pump trucks and manufacturing method thereof |
| CN113187979A (en) * | 2021-05-27 | 2021-07-30 | 湖南精城特种陶瓷有限公司 | Wear-resistant bent pipe structure, machining process and application |
| US11485588B2 (en) | 2020-03-20 | 2022-11-01 | Cnh Industrial America Llc | Wear resistant granular direction altering device |
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| CN108506625A (en) * | 2018-03-15 | 2018-09-07 | 长沙市添芸机械有限公司 | A kind of split-type conveying hinge elbow |
| CN109059600A (en) * | 2018-04-16 | 2018-12-21 | 陈剑雄 | Silicon carbide-metal composite rib heat exchanging pipe and preparation method thereof |
| US11485588B2 (en) | 2020-03-20 | 2022-11-01 | Cnh Industrial America Llc | Wear resistant granular direction altering device |
| CN113187979A (en) * | 2021-05-27 | 2021-07-30 | 湖南精城特种陶瓷有限公司 | Wear-resistant bent pipe structure, machining process and application |
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