CN102410206B - Concrete piston structure, pumping system and concrete pump - Google Patents

Concrete piston structure, pumping system and concrete pump Download PDF

Info

Publication number
CN102410206B
CN102410206B CN201110286772.2A CN201110286772A CN102410206B CN 102410206 B CN102410206 B CN 102410206B CN 201110286772 A CN201110286772 A CN 201110286772A CN 102410206 B CN102410206 B CN 102410206B
Authority
CN
China
Prior art keywords
described
piston
concrete
flange plate
provided
Prior art date
Application number
CN201110286772.2A
Other languages
Chinese (zh)
Other versions
CN102410206A (en
Inventor
刘云
李继波
张春光
Original Assignee
三一汽车制造有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 三一汽车制造有限公司 filed Critical 三一汽车制造有限公司
Priority to CN201110286772.2A priority Critical patent/CN102410206B/en
Publication of CN102410206A publication Critical patent/CN102410206A/en
Application granted granted Critical
Publication of CN102410206B publication Critical patent/CN102410206B/en

Links

Abstract

The invention discloses a concrete piston structure, which is characterized in that an axial hole (11) with a diameter larger than that of a ring flange (21) is formed on a piston body (1); a spacing end cover (3) connected with the piston body (1) is arranged at the opening position of the axial hole (11); an end cover hole (31) with a diameter larger than that of a connecting rod part (22) and smaller than that of the ring flange (21) is formed on the spacing end cover (3); the ring flange (21) is arranged in the axial hole (11); the connecting rod part (22) protrudes from the end cover hole (31); and a rolling component is arranged between the ring flange (21) and the bottom wall of the axial hole (11). The concrete piston is capable of realizing self regulation on the position thereof in a conveyor cylinder, thereby ensuring the coaxiality of the concrete piston and the conveyor cylinder. Moreover, the invention also discloses a pumping system comprising the concrete piston structure. In addition, the invention also discloses a concrete pump comprising the pumping system.

Description

Concrete piston structure, pumping system and concrete pump

Technical field

The present invention relates to concrete pump technical field, particularly a kind of concrete piston structure.In addition, the invention still further relates to a kind of pumping system that comprises this concrete piston structure.Moreover, the invention still further relates to a kind of concrete pump that comprises this pumping system.

Background technique

Concrete pump is a kind of equipment that concrete conveyance is arrived to construction engineering desired location.Pumping system is the core component of concrete pump, and it is the push-and-pull alternating movement by oil cylinder, and hydraulic energy is converted to mechanical energy, makes concrete overcome pipe resistance and is transported to cast position.

Please refer to Fig. 1 and Fig. 2, Fig. 1 is the structural representation of the pumping system of concrete pump in prior art; Fig. 2 is the structural representation of the concrete piston of pumping system in Fig. 1.

As shown in Figure 1, described pumping system comprises master cylinder 1', carries the parts (wherein not shown in hopper, S pipe valve, reversing arrangement and stirring apparatus Fig. 1) such as cylinder 2', water tank 3', concrete piston 4', hopper, S pipe valve, reversing arrangement and stirring apparatus, concrete piston 4' is connected with the piston rod of master cylinder 1', under the effect of master cylinder 1', reciprocating, a concrete piston 4' advances in conveying cylinder 2', and another concrete piston 4' retreats in conveying cylinder 2'; Carry the outlet of cylinder 2' to be communicated with hopper and S pipe valve, and S pipe valve is communicated with discharge port; When pumped concrete earth material, under master cylinder 1' effect, a concrete piston 4' advances, and pumps, and then be pumped in delivery pipe thereby the concrete in conveying cylinder 2' is pushed to S pipe valve; Another concrete piston 4' retreats, thereby the concrete in hopper is sucked and carried in cylinder 2'.In the time completing an above-mentioned pump cycles, control system is sent signal, two master cylinder 1' commutations, go up the concrete piston 4' retreating in one-period and advance, and the concrete piston 4' advancing retreats; While is two conveying cylinder 2' exchange mode of communicating under the effect of the oscillating oil cylinder of reversing arrangement, go up in one-period, the conveying cylinder 2' being communicated with S pipe valve changes into hopper and being communicated with, and the conveying cylinder 2' being communicated with hopper changes the pipe valve with S into, thereby realizes concrete uninterrupted pumping.

As shown in Figure 2, in above-mentioned pumping system, concrete piston 4' comprises the parts such as piston body 4'1, guide ring 4'2, seal 4'3, core cap 4'4 and piston brace rod 4'5; Wherein, piston brace rod 4'5 comprises flange plate 4'51 and the 4'52 of connecting rod portion, as shown in Figure 2, flange plate 4'51 and core cap 4'4 are bolted to connection, and the 4'52 of connecting rod portion is also fixedly connected with piston rod, therefore in the time that concrete piston 4' is larger with the coaxiality deviation of carrying cylinder 2', concrete piston 4' cannot regulate center, thereby can cause concrete piston 4', in conveying cylinder 2', eccentric wear occurs, seriously reduce the working life of concrete piston 4', and reduced the reliability of pumping system work.

In view of this, need badly concrete piston of the prior art is made improvements, make concrete piston can regulate voluntarily its position, thereby ensure it and carry the coaxality between cylinder.

Summary of the invention

The technical problem to be solved in the present invention is for a kind of concrete piston structure is provided, and this concrete piston can regulate it in the position of carrying in cylinder voluntarily, thereby ensures it and carry the coaxality between cylinder.In addition, another technical problem that will solve of the present invention is for providing a kind of pumping system that comprises this concrete piston structure.Moreover another technical problem that will solve of the present invention is for providing a kind of concrete pump that comprises this pumping system.

For solving the problems of the technologies described above, the invention provides a kind of concrete piston structure, comprise piston body and piston brace rod, and described piston brace rod comprises flange plate and connecting rod portion; Described piston body offers the axial bore that diameter is greater than the diameter of described flange plate, and the position, aperture of described axial bore is provided with the spacing end cap being connected with described piston body, this positive stop end is covered with the ending cover hole that diameter is greater than the diameter of described connecting rod portion and is less than the diameter of described flange plate; Described flange plate is located in described axial bore, and described connecting rod portion is by stretching out in described ending cover hole, and has gap between described flange plate and described spacing end cap; Between described flange plate and the diapire of described axial bore, be also provided with passing shaft to push-pull effort rolling member that described piston body can be moved radially with respect to described piston brace rod;

The diapire of described axial bore is provided with force bearing disk, and described rolling member is further located between described force bearing disk and described flange plate.

Preferably, described rolling member is further ball.

Preferably, the end face of described flange plate is provided with the flange plate raceway that multiple row diameter is greater than the diameter of described ball, and on each row flange plate raceway, is equipped with ball described at least one.

Preferably, the end face of described force bearing disk is provided with the force bearing disk raceway that multiple row diameter is greater than the diameter of described ball, the ball of being located on described flange plate raceway is also located on described force bearing disk raceway, and on each row force bearing disk raceway, is equipped with ball described at least one.

Preferably, described flange plate raceway and described force bearing disk raceway are parallel to each other, and all vertically arrange.

Preferably, between described flange plate and described force bearing disk, be also provided with retainer, described retainer is provided with the circular hole that multiple diameters are greater than the diameter of described ball, and described ball is located in described circular hole.

Preferably, the edge part of described retainer is also provided with the arc-shaped hole of the described ball of multiple placements.

Preferably, the diapire of described axial bore is provided with the first sphere, and the end face that described force bearing disk is relative with the diapire of described axial bore is provided with the second sphere coordinating with described the first sphere.

Preferably, the central part of the diapire of described axial bore is provided with mounting groove, described the first sphere is the annular sphere of being located at the peripheral edge portion of described mounting groove, and described the second sphere is to be located at the peripheral edge portion of end face of described force bearing disk another annular sphere coordinating with described annular sphere.

Preferably, the central part of the end face of described force bearing disk is provided with protruding reinforcement boss in described mounting groove.

Preferably, described concrete piston structure also comprises the ball screw for adjusting gap between spacing end cap and flange plate.

Preferably, described positive stop end covers and is provided with end cap tapped hole; The ball head of described ball screw is located at the inner side of described spacing end cap, and and described flange plate between there is gap; The screw section of described ball screw is matched with in described end cap tapped hole, and is combined with locking nut in the described screw section of the described ball screw that is positioned at described spacing end cap outside.

Preferably, the outside of described spacing end cap is further provided with flexible boot, described flexible boot comprise the heart located therein portion looping, be located at the seal ring face of its peripheral edge portion and be located at the flexible pleated portions between described looping and described seal ring face; Described seal ring face is sealedly attached in the peripheral edge portion of outside end face of described spacing end cap, and the week that described looping suit is sealed in described connecting rod portion laterally.

Preferably, the outside of described seal ring face is further provided with pressure ring, and the week of described looping is further provided with clip laterally.

Preferably, described concrete piston structure also comprises guide ring, and the week that described guide ring is set in described piston body, one end of described guide ring was by the limited step butt on described piston body laterally, and its other end is by described spacing end cap butt.

Preferably, described concrete piston also comprises seal and core cap, described piston body is provided with open circular groove away from one end of described piston brace rod, described seal is located in described circular groove, and at seal described in the open position of this circular groove by the core cap butt being connected on described piston body.

In addition, for solving the problems of the technologies described above, the present invention also provides a kind of pumping system, comprises master cylinder and carries cylinder, the main oil cylinder piston bar that is provided with main oil cylinder piston in described master cylinder and is connected with described main oil cylinder piston; Described pumping system also comprises the concrete piston structure described in above-mentioned any one, and described concrete piston is located in described conveying cylinder, and is connected with described main oil cylinder piston bar by described piston brace rod.

Moreover for solving the problems of the technologies described above, the present invention also provides a kind of concrete pump, comprises hopper; Described concrete pump also comprises above-mentioned pumping system, and the quantity of described conveying cylinder is two, and these two are carried cylinder to be alternately communicated with described hopper.

On the basis of existing technology, the piston body of concrete piston structure provided by the present invention offers the axial bore that diameter is greater than the diameter of described flange plate, and the position, aperture of described axial bore is provided with the spacing end cap being connected with described piston body, this positive stop end is covered with the ending cover hole that diameter is greater than the diameter of described connecting rod portion and is less than the diameter of described flange plate; Described flange plate is located in described axial bore, and described connecting rod portion is by stretching out in described ending cover hole, and has gap between described flange plate and described spacing end cap; Between described flange plate and the diapire of described axial bore, be also provided with passing shaft to push-pull effort rolling member that described piston body can be moved radially with respect to described piston brace rod.

When work, because the diameter of ending cover hole is greater than the diameter of connecting rod portion, and be less than the diameter of flange plate, thereby flange plate can be installed in the axial bore of piston body, can not depart from; On this basis, because the diameter of flange plate is less than the diameter of axial bore, and the diameter of connecting rod is less than the diameter of ending cover hole, and and there is gap between described flange plate and described spacing end cap, and rolling member between described flange plate and the diapire of described axial bore, thereby when this concrete piston structure and while carrying between cylinder disalignment, under the effect of inwall of carrying cylinder, piston body moves radially with respect to flange plate, that is this concrete piston structure realized self-aligning, thereby ensure this concrete piston structure and carry the coaxality between cylinder.In sum, concrete piston structure provided by the present invention can regulate it in the position of carrying in cylinder voluntarily, thereby ensures it and carry the coaxality between cylinder.

In addition, the concrete pump that comprises the pumping system of above-mentioned concrete piston structure and comprise this pumping system provided by the present invention, the technique effect of the two is identical with the technique effect of above-mentioned concrete piston structure, does not repeat them here.

Brief description of the drawings

Fig. 1 is the structural representation of the pumping system of concrete pump in prior art;

Fig. 2 is the structural representation of the concrete piston of pumping system in Fig. 1;

Fig. 3 is the structural representation of concrete piston structure in an embodiment of the present invention;

Fig. 4 is the structural representation of the spacing end cap of concrete piston structure in Fig. 3;

Fig. 5 is the structural representation of the force bearing disk of concrete piston structure in Fig. 3;

Fig. 6 is the structural representation of force bearing disk under another visual angle in Fig. 5;

Fig. 7 is the structural representation of the piston brace rod of concrete piston structure in Fig. 3;

Fig. 8 is the arranging structure schematic diagram of the ball of concrete piston structure in Fig. 3;

Fig. 9 is the structural representation of the retainer of concrete piston structure in Fig. 3;

Figure 10 is the structural representation of the ball screw of concrete piston structure in Fig. 3;

Figure 11 is the structural representation of the flexible boot of concrete piston structure in Fig. 3;

Figure 12 is the structural representation of the pressure ring of concrete piston structure in Fig. 3.

Wherein, in Fig. 1 and Fig. 2, the corresponding relation between reference character and component names is:

1' master cylinder; 2' carries cylinder; 3' water tank; 4' concrete piston; 4'1 piston body; 4'2 guide ring; 4'3 seal; 4'4 core cap; 4'5 piston brace rod; 4'51 flange plate; 4'52 connecting rod portion;

Wherein, in Fig. 3 to Figure 12, the corresponding relation between reference character and component names is:

1 piston body; 11 axial bores; 12 first spheres; 13 mounting grooves; 14 limited steps; 15 circular grooves;

2 piston brace rods; 21 flange plate; 211 flange plate raceways; 22 connecting rod portions;

3 spacing end caps; 31 ending cover holes; 32 end cap tapped holes; 33 end cap unthreaded holes;

4 force bearing disks; 41 force bearing disk raceways; 42 second spheres; 43 strengthen boss;

51 balls; 52 retainers; 521 circular holes; 522 arc-shaped holes;

6 core caps;

71 ball screws; 711 ball heads; 712 screw sections;

72 locking nuts;

73 flexible boot; 731 loopings; 732 seal ring faces; 733 flexible pleated portions;

74 pressure rings; 741 pressure ring unthreaded holes;

75 clips;

8 guide rings;

9 seals.

Embodiment

Core of the present invention is for a kind of concrete piston structure is provided, and this concrete piston can regulate it in the position of carrying in cylinder voluntarily, thereby ensures it and carry the coaxality between cylinder.In addition, another core of the present invention is for providing a kind of pumping system that comprises this concrete piston structure.Moreover another core of the present invention is for providing a kind of concrete pump that comprises this pumping system.

In order to make those skilled in the art understand better technological scheme of the present invention, below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.

Please refer to Fig. 3 and Fig. 4, Fig. 3 is the structural representation of concrete piston structure in an embodiment of the present invention; Fig. 4 is the structural representation of the spacing end cap of concrete piston structure in Fig. 3.

In one embodiment, as shown in Figure 3, concrete piston structure provided by the present invention, comprises piston body 1 and piston brace rod 2, and piston brace rod 2 comprises flange plate 21 and connecting rod portion 22; On this basis, as shown in Figure 3, piston body 1 offers axial bore 11, and the diameter D2 of this axial bore is greater than the diameter d 2 of flange plate 21, the position, aperture of this axial bore 11 is provided with the spacing end cap 3 being connected with piston body 1, and particularly, this spacing end cap 3 can be bolted on piston body 1; As shown in Figure 3 and Figure 4, this spacing end cap 3 is provided with ending cover hole 31, and the diameter D1 of this ending cover hole 31 is greater than the diameter d 1 of connecting rod portion 22 and is less than the diameter d 2 of flange plate 21, flange plate 21 is located in axial bore 11, connecting rod portion 22 is by stretching out in ending cover hole 31, and has gap between flange plate 21 and spacing end cap 3; Rolling member between the diapire of flange plate 21 and axial bore 11, this rolling member is for passing shaft to push-pull effort, and the while also makes piston body 1 be easy to can move radially with respect to piston brace rod 2.

When work, because the diameter of ending cover hole 31 is greater than the diameter of connecting rod portion 22, and be less than the diameter of flange plate 21, thereby flange plate 21 can be installed in the axial bore 11 of piston body 1, can not depart from; On this basis, because the diameter of flange plate 21 is less than the diameter of axial bore 11, and the diameter of connecting rod is less than the diameter of ending cover hole 31, and and there is gap between flange plate 21 and spacing end cap 3, and rolling member between flange plate 21 and the diapire of axial bore 11, thereby when this concrete piston structure and while carrying between cylinder disalignment, under the effect of inwall of carrying cylinder, piston body 1 moves radially with respect to flange plate 21, that is this concrete piston structure realized self-aligning, thereby ensure this concrete piston structure and carry the coaxality between cylinder.To sum up, concrete piston structure provided by the present invention can regulate it in the position of carrying in cylinder voluntarily, thereby ensures it and carry the coaxality between cylinder.

It should be noted that, one, in technique scheme, the diapire upper type that the present invention is supported in axial bore 11 for rolling member is not restricted, this kind of supporting way can be indirectly to support, and such as hereinafter, rolling member is supported in by force bearing disk 4 on the diapire of axial bore 11; Certainly, can also directly be supported on the diapire of axial bore 11 by rolling member, between the two, do not exist other as the force-transmitting member of force bearing disk 4.They are two years old, in technique scheme, the present invention is not restricted for the structure of rolling member, and this rolling member can be ball 51 hereinafter, can also can make piston body 1 be easy to realize with respect to flange plate 21 parts that roll for cylindrical roller, tapered roller or other.

On the basis of technique scheme, can make further improvement.Particularly, please refer to Fig. 5, Fig. 6, Fig. 7 and Fig. 8, Fig. 5 is the structural representation of the force bearing disk of concrete piston structure in Fig. 3; Fig. 6 is the structural representation of force bearing disk under another visual angle in Fig. 5; Fig. 7 is the structural representation of the piston brace rod of concrete piston structure in Fig. 3; Fig. 8 is the arranging structure schematic diagram of the ball of concrete piston structure in Fig. 3.

Particularly, as shown in Figure 3, on the diapire of axial bore 11, can be provided with force bearing disk 4, rolling member is further located between force bearing disk 4 and flange plate 21.Directly be supported in the structural design on axial bore 11 diapires with respect to rolling member, this kind of structural design can be easy to passing shaft to push-pull effort, and make piston body 1 be easier to move radially with respect to flange plate 21.

It should be noted that, in technique scheme, the present invention for whether being provided with raceway on flange plate 21 and force bearing disk 4 is not restricted, thereby can not be provided with raceway on flange plate 21 and force bearing disk 4.Certainly the two also can be provided with raceway, now comprises three kinds of concrete technological schemes: one for being only provided with raceway on force bearing disk 4, and two for being only provided with raceway on flange plate 21, and three whiles are provided with raceway on force bearing disk 4 and flange plate 21.

As shown in Figure 8, rolling member is further ball 51; On this basis, as shown in Figure 7, the end face of flange plate 21 is provided with the flange plate raceway 211 that multiple row diameter is greater than the diameter of ball 51, and is equipped with at least one ball 51 on each row flange plate raceway 211.The structural design that ball 51 matches with raceway can increase the area of contact of ball 51, improves contact strength, and then improves the life-span of ball 51 and flange plate 21.In addition, because the diameter of flange plate raceway 211 is greater than the diameter of ball 51, thereby ball 51 not only can move along the bearing of trend of flange plate raceway 211, but also can roll in the other direction, thereby can make force bearing disk 4 and piston body 1 move radially on any direction of circumferential 360 ° with respect to flange plate 21.

As shown in Figure 5, in technique scheme, on the end face of force bearing disk 4, can be provided with the force bearing disk raceway 41 that multiple row diameter is greater than the diameter of ball 51, the ball 51 of being located on flange plate raceway 211 is also located on force bearing disk raceway 41, and is equipped with at least one ball 51 on each row force bearing disk raceway 41.The structural design that ball 51 matches with raceway can increase the area of contact of ball 51, improves contact strength, and then improves the life-span of ball 51 and force bearing disk 4.In addition, because the diameter of force bearing disk 4 is greater than the diameter of ball 51, thereby ball 51 not only can move along the bearing of trend of force bearing disk raceway 41, but also can roll in the other direction, thereby can further ensure that force bearing disk 4 and piston body 1 move radially on any direction of circumferential 360 ° with respect to flange plate 21.

It should be noted that, in technique scheme, the present invention is not restricted for the relative position relation between flange plate raceway 211 and force bearing disk raceway 41, no matter parallel between the two, vertically still form an angle, all within protection scope of the present invention.Particularly, flange plate raceway 211 can be parallel to each other with force bearing disk raceway 41, and all vertically arranges.Concrete piston structure is in the time of work, it is generally in the vertical direction generation eccentric wear, thereby flange plate raceway 211 can be parallel to each other with force bearing disk raceway 41, and all vertically arrange, this kind of structure is easy to make piston body 1 and force bearing disk 4 to be moved with respect to flange plate 21 in the vertical directions, that is makes concrete piston structure in the vertical direction be easy to realize the object of aligning.

In technique scheme, in order to prevent interfering between adjacent ball 51, can make further improvement.Such as, please also refer to Fig. 3 and Fig. 9, between flange plate 21 and force bearing disk 4, can also be provided with retainer 52, particularly, this retainer 52 can be tabular; Retainer 52 is provided with the circular hole 521 that multiple diameters are greater than the diameter of ball 51, and ball 51 is located in circular hole 521.This retainer 52 is isolated each ball 51 mutually, thereby can prevent from interfering between ball 51.In addition, because the diameter of circular hole 521 is greater than the diameter of ball 51, thereby can avoid as much as possible the frictional force between ball 51 and retainer 52, make ball 51 be easy to roll.In addition, as shown in Figure 9, the edge part of retainer 52 is also provided with arc-shaped hole 522, ball 51 can also be located in this arc-shaped hole 522, this kind of structural design can make full use of the space of retainer 52, thereby increase the quantity of ball 51, and then make piston body 1 and force bearing disk 4 be easier to relatively move with respect to flange plate 21.

On the basis of above-mentioned any technological scheme, can also make further improvement.Such as, as shown in Figure 3, the diapire of axial bore 11 is provided with the first sphere 12, and as shown in Figure 3 and Figure 6, the end face that force bearing disk 4 is relative with the diapire of axial bore 11 is provided with the second sphere 42 coordinating with the first sphere 12.The diameter of these two spheres is identical, thereby can form typed ball bearing pair, this kind of structural design can make piston body 1 occur 360 ° relative to force bearing disk 4 to rotate, thereby can eliminate the angular deflection of concrete piston structure, thereby further ensured concrete piston structure and carried the coaxality between cylinder.

Particularly, as shown in Figure 3, the central part of the diapire of axial bore 11 is provided with mounting groove 13; On this basis, the first sphere 12 is for being located at the annular sphere of peripheral edge portion of mounting groove 13, and the second sphere 42 is for being located at the peripheral edge portion of end face of force bearing disk 4 another annular sphere coordinating with annular sphere.The typed ball bearing pair that this kind of structural design realized between piston body 1 and force bearing disk 4 is on the one hand connected, and is also convenient on the other hand realize being connected between piston body 1 and core cap 6.

Further, as shown in Figure 3 and Figure 6, the central part of the end face of force bearing disk 4 is provided with strengthens boss 43, and in the protruding mounting groove 13 on axial bore 11 diapires of this reinforcement boss 43, this kind of design ensured the structural strength of force bearing disk 4, and structure is comparatively compact.

In addition,, in above-mentioned any technological scheme, can also make further improvement.Particularly, please also refer to Fig. 3 and Figure 10, Figure 10 is the structural representation of the ball screw of concrete piston structure in Fig. 3.

Particularly, as shown in Figure 3, concrete piston structure also comprises the ball screw 71 for adjusting gap between spacing end cap 3 and flange plate 21; Particularly, as shown in Figure 4, spacing end cap 3 is provided with end cap tapped hole 32; The ball head 711 of ball screw 71 is located at the inner side of spacing end cap 3, and and flange plate 21 between there is gap; The screw section 712 of ball screw 71 is matched with in end cap tapped hole 32, and as shown in Figure 3, is combined with locking nut 72 in the outside screw portion 712 of spacing end cap 3.

When work, while needing adjusting ball head screw 71, locking nut 72 is backed out, at the outside of spacing end cap 3 rotating ballhead screw 71, the ball head 711 that makes ball screw 71 away from or near flange plate 21, and then making the rational gap of maintenance between ball head 711 and flange plate 21, this gap is specifically as follows 0.1 to 0.3mm.This kind of structural design can prevent between flange plate 21 and spacing end cap 3 that, due to excesssive gap, concrete piston structure is in the time that commutation moment is changed by force direction, and active force causes larger impact to flange plate raceway 211, force bearing disk raceway 41 and ball 51.

Moreover, on the basis of above-mentioned any technological scheme, can also make further improvement.Particularly, please also refer to Fig. 3, Figure 11 and Figure 12, Figure 11 is the structural representation of the flexible boot of concrete piston structure in Fig. 3; Figure 12 is the structural representation of the pressure ring of concrete piston structure in Fig. 3.

Particularly, as shown in Figure 3, the outside of described spacing end cap 3 is further provided with flexible boot 73.This flexible boot 73 is isolated from the outside force bearing disk 4, ball 51 and flange plate 21 to come, and ensures the clean of axial bore 11 inside, the impact of dust and water dirt in Bu Shou purge chamber.

Particularly, as shown in figure 11, flexible boot 73 comprise the heart located therein portion looping 731, be located at the seal ring face 732 of its peripheral edge portion and be located at the flexible pleated portions 733 between looping 731 and seal ring face 732; As shown in Figure 3, seal ring face 732 is sealedly attached in the peripheral edge portion of outside end face of spacing end cap 3, and the week that looping 731 suit is sealed in connecting rod portion 22 laterally.

Further, as shown in Fig. 3 and Figure 12, the outside of seal ring face 732 is further provided with pressure ring 74, and the week of looping 731 is further provided with clip 75 laterally.This kind of structural design can further ensure the reliability of sealing.As shown in figure 12, pressure ring 74 is provided with pressure ring unthreaded hole 741, and as shown in Figure 6, spacing end cap 3 is provided with end cap unthreaded hole 33, and bolt passes this pressure ring unthreaded hole 741 and end cap unthreaded hole 33, and then spacing end cap 3 and pressure ring 74 are connected on piston body 1.

In addition, as shown in Figure 3, concrete piston structure also comprises guide ring 8, and the week that guide ring 8 is set in piston body 1, one end of guide ring 8 was by limited step 14 butts on piston body 1 laterally, and its other end is by spacing end cap 3 butts.

And, as shown in Figure 3, concrete piston also comprises seal 9 and core cap 6, and piston body 1 is provided with open circular groove 15 away from one end of piston brace rod 2, seal 9 is located in circular groove 15, and at the open position of this circular groove 15 seal 9 by core cap 6 butts that are connected on piston body 1.Piston body 1 inside is provided with axial bore 11, thereby is a kind of U-shaped structure, and on the basis of this kind of structure, said structure design has realized spacing to seal 9, and has realized comparatively easily being connected between core cap 6 and piston body 1.In addition, as shown in Figure 3, the bolt that connects piston body 1 and core cap 6 can be located in mounting groove 13.

The present invention also provides a kind of pumping system, comprises master cylinder and carries cylinder, the main oil cylinder piston bar that is provided with main oil cylinder piston in described master cylinder and is connected with described main oil cylinder piston; Pumping system also comprises the concrete piston structure in above-mentioned any embodiment, and concrete piston is located at and is carried in cylinder, and is connected with described main oil cylinder piston bar by piston brace rod 2.Remove beyond concrete piston structure, the structural design of this pumping system and working procedure are identical with structural design and the working procedure of pumping system in background technique above, do not repeat them here.

The present invention also provides a kind of concrete pump, comprises hopper; Concrete pump also comprises above-mentioned pumping system, and carrying the quantity of cylinder is two, and these two are carried cylinder to be alternately communicated with hopper.Carry cylinder specifically how to realize with hopper for these two and be alternately communicated with, above, background technique part is existing introduces, and does not repeat them here.

Above concrete piston structure provided by the present invention, pumping system and concrete pump are described in detail.Applied specific case herein principle of the present invention and mode of execution are set forth, above embodiment's explanation is just for helping to understand method of the present invention and core concept thereof.It should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention, can also carry out some improvement and modification to the present invention, these improvement and modification also fall in the protection domain of the claims in the present invention.

Claims (18)

1. a concrete piston structure, comprises piston body (1) and piston brace rod (2), and described piston brace rod (2) comprises flange plate (21) and connecting rod portion (22); It is characterized in that, described piston body (1) offers the axial bore (11) that diameter is greater than the diameter of described flange plate (21), and the position, aperture of described axial bore (11) is provided with the spacing end cap (3) being connected with described piston body (1), this spacing end cap (3) is provided with the ending cover hole (31) that diameter is greater than the diameter of described connecting rod portion (22) and is less than the diameter of described flange plate (21); Described flange plate (21) is located in described axial bore (11), and described connecting rod portion (22) is by stretching out in described ending cover hole (31), and has gap between described flange plate (21) and described spacing end cap (3); Between the diapire of described flange plate (21) and described axial bore (11), be also provided with passing shaft to push-pull effort rolling member that described piston body (1) can be moved radially with respect to described piston brace rod (2);
The diapire of described axial bore (11) is provided with force bearing disk (4), and described rolling member is further located between described force bearing disk (4) and described flange plate (21).
2. concrete piston structure as claimed in claim 1, is characterized in that, described rolling member is further ball (51).
3. concrete piston structure as claimed in claim 2, it is characterized in that, the end face of described flange plate (21) is provided with the flange plate raceway (211) that multiple row diameter is greater than the diameter of described ball (51), and on each row flange plate raceway (211), is equipped with ball (51) described at least one.
4. concrete piston structure as claimed in claim 3, it is characterized in that, the end face of described force bearing disk (4) is provided with the force bearing disk raceway (41) that multiple row diameter is greater than the diameter of described ball (51), being located at ball (51) on described flange plate raceway (211), to be also located at described force bearing disk raceway (41) upper, and on each row force bearing disk raceway (41), be equipped with ball (51) described at least one.
5. concrete piston structure as claimed in claim 4, is characterized in that, described flange plate raceway (211) is parallel to each other with described force bearing disk raceway (41), and all vertically arranges.
6. the concrete piston structure as described in claim 2 to 5 any one, it is characterized in that, between described flange plate (21) and described force bearing disk (4), be also provided with retainer (52), described retainer (52) is provided with the circular hole (521) that multiple diameters are greater than the diameter of described ball (51), and described ball (51) is located in described circular hole (521).
7. concrete piston structure as claimed in claim 6, is characterized in that, the edge part of described retainer (52) is also provided with the arc-shaped hole (522) of the described ball of multiple placements (51).
8. the concrete piston structure as described in claim 1 to 5 any one, it is characterized in that, the diapire of described axial bore (11) is provided with the first sphere (12), and the end face that described force bearing disk (4) is relative with the diapire of described axial bore (11) is provided with the second sphere (42) coordinating with described the first sphere (12).
9. concrete piston structure as claimed in claim 8, it is characterized in that, the central part of the diapire of described axial bore (11) is provided with mounting groove (13), described the first sphere (12) is for being located at the circumferential annular sphere of described mounting groove (13), and described the second sphere (42) is for being located at the peripheral edge portion of end face of described force bearing disk (4) another annular sphere coordinating with described annular sphere.
10. concrete piston structure as claimed in claim 9, is characterized in that, the central part of the end face of described force bearing disk (4) is provided with protruding reinforcement boss (43) in described mounting groove (13).
11. concrete piston structures as described in claim 1 to 5 any one, is characterized in that, described concrete piston structure also comprises the ball screw (71) for adjusting gap between spacing end cap (3) and flange plate (21).
12. concrete piston structures as claimed in claim 11, is characterized in that, described spacing end cap (3) is provided with end cap tapped hole (32); The ball head (711) of described ball screw (71) is located at the inner side of described spacing end cap (3), and and described flange plate (21) between there is gap; The screw section (712) of described ball screw (71) is matched with in described end cap tapped hole (32), and is combined with locking nut (72) in the described screw section (712) of the described ball screw (71) that is positioned at described spacing end cap (3) outside.
13. concrete piston structures as described in claim 1 to 5 any one, it is characterized in that, the outside of described spacing end cap (3) is further provided with flexible boot (73), described flexible boot comprise the heart located therein portion looping (731), be located at the seal ring face (732) of its peripheral edge portion and be located at described looping (731) and described seal ring face (732) between flexible pleated portions (733); Described seal ring face (732) is sealedly attached in the peripheral edge portion of outside end face of described spacing end cap (3), and the week that described looping (731) suit is sealed in described connecting rod portion (22) laterally.
14. concrete piston structures as claimed in claim 13, is characterized in that, the outside of described seal ring face (732) is further provided with pressure ring (74), and the week of described looping (731) is further provided with clip (75) laterally.
15. concrete piston structures as described in claim 1 to 5 any one, it is characterized in that, described concrete piston structure also comprises guide ring (8), the week that described guide ring (8) is set in described piston body (1) laterally, one end of described guide ring (8) is by limited step (14) butt on described piston body (1), and its other end is by described spacing end cap (3) butt.
16. concrete piston structures as described in claim 1 to 5 any one, it is characterized in that, described concrete piston also comprises seal (9) and core cap (6), described piston body (1) is provided with open circular groove (15) away from one end of described piston brace rod (2), described seal (9) is located in described circular groove (15), and at seal (9) described in the open position of this circular groove (15) by core cap (6) butt being connected on described piston body (1).
17. 1 kinds of pumping systems, comprise master cylinder and carry cylinder, the main oil cylinder piston bar that is provided with main oil cylinder piston in described master cylinder and is connected with described main oil cylinder piston; It is characterized in that, described pumping system also comprises the concrete piston structure as described in claim 1 to 16 any one, and described concrete piston is located in described conveying cylinder, and is connected with described main oil cylinder piston bar by described piston brace rod.
18. 1 kinds of concrete pumps, comprise hopper; It is characterized in that, described concrete pump also comprises pumping system as claimed in claim 17, and the quantity of described conveying cylinder is two, and these two are carried cylinder to be alternately communicated with described hopper.
CN201110286772.2A 2011-09-23 2011-09-23 Concrete piston structure, pumping system and concrete pump CN102410206B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201110286772.2A CN102410206B (en) 2011-09-23 2011-09-23 Concrete piston structure, pumping system and concrete pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201110286772.2A CN102410206B (en) 2011-09-23 2011-09-23 Concrete piston structure, pumping system and concrete pump

Publications (2)

Publication Number Publication Date
CN102410206A CN102410206A (en) 2012-04-11
CN102410206B true CN102410206B (en) 2014-09-10

Family

ID=45912478

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201110286772.2A CN102410206B (en) 2011-09-23 2011-09-23 Concrete piston structure, pumping system and concrete pump

Country Status (1)

Country Link
CN (1) CN102410206B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103671080B (en) * 2013-12-10 2016-03-02 中联重科股份有限公司 Piston mechanism and comprise the concrete pumping machinery of this piston mechanism

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4036564A (en) * 1971-08-02 1977-07-19 Richards John A Concrete pumping apparatus
US4258612A (en) * 1977-12-21 1981-03-31 Wibau Piston pump for conveying concrete mixes
CN2256474Y (en) * 1995-08-07 1997-06-18 陈兴良 Floating type connector
CN101240794A (en) * 2008-03-14 2008-08-13 贵州大学 Method and device for reducing axial plunger pump geometric flow pulsation
CN201858140U (en) * 2010-11-22 2011-06-08 三一重工股份有限公司 Direct-linked concrete piston head and concrete pump using same

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4036564A (en) * 1971-08-02 1977-07-19 Richards John A Concrete pumping apparatus
US4258612A (en) * 1977-12-21 1981-03-31 Wibau Piston pump for conveying concrete mixes
CN2256474Y (en) * 1995-08-07 1997-06-18 陈兴良 Floating type connector
CN101240794A (en) * 2008-03-14 2008-08-13 贵州大学 Method and device for reducing axial plunger pump geometric flow pulsation
CN201858140U (en) * 2010-11-22 2011-06-08 三一重工股份有限公司 Direct-linked concrete piston head and concrete pump using same

Also Published As

Publication number Publication date
CN102410206A (en) 2012-04-11

Similar Documents

Publication Publication Date Title
CN102105700B (en) A pump housing support
KR20090092263A (en) Rotary actuator
US7950905B2 (en) Radial piston fuel supply pump
EP2683968A2 (en) Seal assemblies for reciprocating and rotary applications
RU2587202C2 (en) Assembly for hydraulic downhole motor, method of producing downhole motor and method of making stator of downhole motor
US20120211945A1 (en) Sealing packing for a reciprocating piston rod of a reciprocating compressor
CN102027241B (en) Apparatus for impeller sealing in centrifugal pumps
WO2012052842A2 (en) Fluid end reinforced with abrasive resistant insert, coating or lining
CN102619715B (en) Balanced high-flow axial plunger pump
CN102020101B (en) Upper carrier roller device for plate type ore conveying machine
JP5576941B2 (en) Piston pump
EP1985853A1 (en) Radial piston pump, in particular for Common Rail (CR) injection systems
US20150130256A1 (en) Rolling friction or suspension friction impact mining method and wear-resistant impact mining machine using said method
US8337178B2 (en) Pump, particularly high-pressure fuel pump
CN201396273Y (en) Novel ultra-high pressure gear oil pump
CN102996385A (en) Hydrostatic axial piston machine
US20130000995A1 (en) Track link connector with textured region
CN203641150U (en) Drive device for correcting reciprocating movement direction of piston rod through rolling friction
CN102357970B (en) Hydraulic urgent opening apparatus of calender roller
CN104373352B (en) Magnetic suspension single shaft direct-drive compressor
CN103410732A (en) Rotary-type translation piston compressor
CN103920913B (en) A kind of technique cylinder cap for processing engine cylinder block bore and processing method
CN103758721B (en) A kind of axial-flow type biserial radial plunger hydraulic pump
CN104329250B (en) A kind of low-flux pulse double-direction gearpump
CN201656739U (en) Submersible linear motor

Legal Events

Date Code Title Description
PB01 Publication
C06 Publication
SE01 Entry into force of request for substantive examination
C10 Entry into substantive examination
TA01 Transfer of patent application right

Effective date of registration: 20130502

Address after: 410100 Changsha economic and Technological Development Zone, Hunan City, the 31 industrial city

Applicant after: SANY Automobile Manufacturing Co., Ltd.

Address before: 410100 Changsha economic and Technological Development Zone, Hunan City, the 31 industrial city

Applicant before: Sanyi Heavy Industry Co., Ltd.

C41 Transfer of patent application or patent right or utility model
ASS Succession or assignment of patent right

Owner name: SANY AUTOMOBILE MANUFACTURING CO., LTD.

Free format text: FORMER OWNER: SANYI HEAVY INDUSTRY CO LTD

Effective date: 20130502

GR01 Patent grant
C14 Grant of patent or utility model