CN102410205A - Concrete pumping equipment and concrete piston thereof - Google Patents
Concrete pumping equipment and concrete piston thereof Download PDFInfo
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- CN102410205A CN102410205A CN2011102680260A CN201110268026A CN102410205A CN 102410205 A CN102410205 A CN 102410205A CN 2011102680260 A CN2011102680260 A CN 2011102680260A CN 201110268026 A CN201110268026 A CN 201110268026A CN 102410205 A CN102410205 A CN 102410205A
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Abstract
The invention discloses a concrete piston which comprises a connecting rod and a piston head, wherein the connecting rod and the piston head are articulated through a cup-and-ball joint; and the ball head semicircular surface of the cup-and-ball joint vertical to the center line of the piston head is arranged at the front end of a sealing lip of the piston head. In case of deflection under the action of external force, the concrete piston can restore to the better coaxiality of the piston head and a piston cylinder under the action of smaller restoring force, the wear of the sealing lip of the piston head is reduced, and the service life is prolonged. The invention also discloses concrete pumping equipment comprising the concrete piston.
Description
Technical field
The present invention relates to technical field of engineering machinery, particularly relate to a kind of concrete piston that is used for concrete pumping equipment.In addition, the invention still further relates to a kind of concrete pumping equipment that comprises above-mentioned concrete piston.
Background technique
Along with the fast development of China's economic construction, being on the increase of construction project, market also increases for the demand of concrete equipment day by day.
In the process of concrete pumping equipment in pumping, through the to-and-fro motion of concrete piston in carrying cylinder concrete is pressed in the conveyance conduit, realize concrete pumping.
Please refer to Fig. 1, Fig. 1 is a kind of typical concrete structure of piston schematic representation in the existing technology.
Shown in figure; Concrete piston of the prior art comprises connecting rod 1 and piston head 2; The two connects through connecting bolt 3, and wherein, piston head 2 comprises guide ring 21, piston body 22, concrete seal 23 and telescopic pressing plate 24; One end of connecting rod 1 and telescopic pressing plate 29 are connected through connecting bolt, and the other end is connected with piston rod 4.
In the working procedure, piston rod 4 generation to-and-fro motion, drive connecting rod 1 and the piston head 2 that is fixedly connected with it are worked to the concrete force feed of suction or force feed concrete completion concrete pump in the conveying cylinder of concrete pump.
Yet, in actual pumping process, can not keep coaxial fully between piston head 2 and the conveying cylinder; Thereby be easy to receive the effect of radial effect power in the process that makes the concrete piston in carrying cylinder, move reciprocatingly; Cause the eccentric wear of concrete piston, cause the piston head and the wearing and tearing of carrying cylinder of concrete pump, influence its pump-conveying property; Also can cause the time between failures of concrete pump shorter, make that the operating cost of concrete pump is higher.
For addressing the above problem, patent CN200920312334.7 provides a kind of cup-and-ball joint formula concrete piston and has comprised the concrete pumping equipment of this concrete piston, please refer to Fig. 2, and Fig. 2 is the concrete structure of piston schematic representation that aforementioned patent provided.
Shown in figure; The concrete piston comprises connecting rod 1 and piston head 2, and the two ends of connecting rod 1 are connected with piston rod 4 with piston head 2 respectively, and piston head 2 comprises guide ring 21, piston body 22, concrete seal 23, telescopic pressing plate 24, pressing plate 26 and connecting plate 25; Offer ball-and-socket 27 on the connecting plate 25; The end that connecting rod 1 is connected with piston head 2 is provided with hemispherical head 11, and hemispherical head 11 cooperatively interacts with ball-and-socket 27 and is arranged in the ball-and-socket 27, also is provided with spherical surface hill 12 on the connecting rod 1; Connecting rod 1 is connected through connecting bolt 3 with piston head 2; Be specially; Hemispherical head 11 is positioned at ball-and-socket 27; Connecting bolt connects pressing plate 26, connecting plate 25 and telescopic pressing plate 24 successively, and the crowning of spherical surface hill 12 is corresponding each other with the end face of connecting plate 25, and pressing plate 26 grips guide ring 21, piston body 22 and concrete seal 23 with telescopic pressing plate 24.
Thereby in carrying out concrete pumping process, piston head 2 can be adjusted according to stressing conditions automatically, thereby guarantees piston head 2 and the coaxality of carrying cylinder, improves the stressing conditions of piston head 2, reduces the wearing and tearing of piston head 2, prolongs its working life.
Yet the piston head 2 in the above-mentioned patent and the articulated position of connecting rod 1 are positioned at the rear end of the seal lip of piston head 2, make piston head 2 under the thrust of connecting rod 1, travel forward; To the effect of concrete applied thrust; And the drag effect that piston head 2 is born in proal process is bigger, and piston head and connecting rod are hinged, thereby makes the moving direction of piston head 2 and seal lip be in an unsure state; Be easy to occur have between moving direction and the connecting rod 1 of piston head 2 situation of certain included angle; The active force that makes piston rod 4 act on piston head 2 produces the component of radial direction, and the point of action of this component is positioned at the seal lip of piston head 2, causes seal lip under the situation of the sidewall of clamping piston cylinder, to be moved; Produce the frictional force of piston cylinder, cause the wearing and tearing of seal lip seal lip.
Please refer to Fig. 3, the concrete piston that Fig. 3 is provided for patent CN200920312334.7 produces the stressed schematic representation behind the angle under unstable state.
Shown in figure, in the course of the work since piston head 2 be not stable connection being connected of connecting rod 1; Under concrete effect, piston head 2 also can make the rotatable portion of piston head 2 and connecting rod 1 form the big or small angle of θ that is with respect to connecting rod 1 around the articulating point rotation; Because the articulating point of connecting rod 1 and piston head 2 is positioned at the back of seal lip, therefore, the seal lip and the pressure between the piston cylinder of a side identical with sense of rotation can increase; Correspondingly; Frictional force also increases, and the seal lip of piston head 2 receives the pressure N of piston cylinder at this moment, receives the frictional force F2 of piston cylinder simultaneously.At this moment; The directed force F 1 of 1 pair of articulating point of connecting rod and piston cylinder form a pair of couple to the frictional force F2 of seal lip; The action direction of this couple makes the piston head 2 and the angle theta of connecting rod 1 further increase, thereby the wearing and tearing of aggravation piston head 2 reduce its working life.
Therefore; How to avoid producing angle because of the unstable state of piston head moving direction; Thereby avoid because of this angle causes the radial force of piston cylinder to seal lip, perhaps how the angle that produces of the unstable state of modifying factor piston head moving direction returns back to original state, and then avoids the wearing and tearing of seal lip; Prolong its working life, just become the present technical issues that need to address of those skilled in the art.
Summary of the invention
The purpose of this invention is to provide a kind of concrete piston; When the drift angle takes place in this concrete piston under the effect that receives external force; Can return back to original state at the angle of the unstable state generation of modifying factor piston head moving direction automatically; Have the state of coaxality preferably thereby return to piston head and piston cylinder, and then reduced the wearing and tearing of the seal lip of piston head, prolonged working life.Another object of the present invention provides a kind of concrete pumping equipment that comprises above-mentioned concrete piston.
For solving the problems of the technologies described above, the present invention provides a kind of concrete piston, comprises connecting rod and piston head, and said connecting rod and piston head are hinged through cup-and-ball joint, and the centre of sphere of said cup-and-ball joint is positioned at the front end of the seal lip of said piston head.
Preferably; The front end of said connecting rod is provided with bulb; The gland of said piston head offers the first hemisphere nest that matches with first hemispherical head of said bulb; The bulb pressing plate that is arranged at said connecting rod one side offers the second hemisphere nest that matches with second hemispherical head of said bulb, and said gland and said bulb pressing plate cooperatively interact, and said bulb is limited in the said first hemisphere nest and the second hemisphere nest.
Preferably, the centre of sphere of said first hemispherical head overlaps with the centre of sphere of said second hemispherical head, and the radius of said first hemispherical head is less than the radius of said second hemispherical head, and has predetermined gap between said second hemispherical head and the said gland.
Preferably; The front end of said connecting rod is provided with the 3rd hemisphere nest; The gland of said piston head is provided with the 3rd hemispherical head that matches with the madial wall of said the 3rd hemisphere nest; The bulb pressing plate that is arranged at said connecting rod one side is provided with the second hemisphere nest that matches with the outer side wall of said the 3rd hemisphere nest, and said gland and said bulb pressing plate cooperatively interact, and said the 3rd hemispherical head is limited in said the 3rd hemisphere nest.
Preferably; The front end of said connecting rod is provided with the 3rd hemisphere nest; The gland of said piston head is provided with the first hemisphere nest that matches with said the 3rd hemisphere nest; Be provided with steel ball in said the 3rd hemisphere nest and the said first hemisphere nest, the bulb pressing plate that is arranged at said connecting rod one side offers the second hemisphere nest that matches with the outer side wall of said the 3rd hemisphere nest, and said bulb pressing plate and said gland are limited to said steel ball in said first hemisphere nest and the said second hemisphere nest.
Preferably, has predetermined gap between the cross section of the sidewall of said the 3rd hemisphere nest and the said gland.
Preferably, said bulb pressing plate is connected through screw with said gland.
Preferably, offer oil duct on the said connecting rod, said oil duct is communicated with fuel filler neck and said cup-and-ball joint.
Preferably, said fuel filler neck is positioned at the tail end or the side of said connecting rod.
For solving the problems of the technologies described above, the present invention also provides a kind of concrete pumping equipment, comprises piston cylinder and the concrete piston that matches with said piston cylinder, and said concrete piston is above-mentioned each described concrete piston.
A kind of concrete piston provided by the present invention comprises connecting rod and piston head, and connecting rod and piston head are hinged through cup-and-ball joint, and the centre of sphere of the bulb of cup-and-ball joint is positioned at the front end of the seal lip of piston head.Like this, connecting rod is connected through cup-and-ball joint with piston head, in the course of the work; When piston head can not overlap with the axis of piston cylinder fully, piston head can freely rotate with respect to connecting rod, the coaxality of adjustment piston head and piston cylinder; Meanwhile and since piston head be not stable connection being connected of connecting rod, under concrete effect; Piston head also can rotate around articulating point with respect to connecting rod, and the active force that makes piston rod act on piston head produces the component of radial direction, and the point of action of this component is positioned at the seal lip of piston head; Cause seal lip under the situation of the sidewall of clamping piston cylinder, to be moved, produce the frictional force of piston cylinder seal lip, and because the centre of sphere of the bulb of cup-and-ball joint is positioned at the front end of the seal lip of piston head; Under the effect of piston head in external force when the centre of sphere rotates; Produce pressure between the seal lip of an opposite side and the sidewall of piston cylinder, and then produce frictional force, make connecting rod form a pair of couple to the frictional force of seal lip the active force of articulating point and piston cylinder with sense of rotation; The action direction of this couple is opposite with the sense of rotation of piston head; Thereby can reduce the moving direction of piston head and the angle between the connecting rod, the component that the active force that causes piston rod to act on piston head produces radial direction further reduces, and finally makes piston head restore original position.Thereby greatly reduce the wearing and tearing of piston head, prolonged its working life.
The beneficial effect of concrete piston provided by the present invention is identical with the beneficial effect of above-mentioned concrete pump, repeats no more here.
Description of drawings
Fig. 1 is a kind of typical concrete structure of piston schematic representation in the existing technology;
The concrete structure of piston schematic representation that Fig. 2 is provided for patent CN200920312334.7;
The concrete piston that Fig. 3 is provided for patent CN200920312334.7 produces the stressed schematic representation behind the angle under unstable state;
Fig. 4 is first kind of concrete structure of piston schematic representation that embodiment provided of the present invention;
Fig. 5 is the stressed schematic representation concrete piston of the present invention produces angle under unstable state after;
Fig. 6 is second kind of concrete structure of piston schematic representation that embodiment provided of the present invention;
The concrete structure of piston schematic representation that Fig. 7 is provided for the third embodiment of the present invention;
Fig. 8 is the 4th kind of concrete structure of piston schematic representation that embodiment provided of the present invention;
Fig. 9 is the 5th kind of concrete structure of piston schematic representation that embodiment provided of the present invention;
The structural representation of the concrete pumping equipment that Figure 10 is provided for a kind of embodiment of the present invention.
Embodiment
Core of the present invention provides a kind of concrete piston; When the drift angle takes place in this concrete piston under the effect that receives external force; Can return back to original state at the angle of the unstable state generation of modifying factor piston head moving direction automatically; Have the state of coaxality preferably thereby return to piston head and piston cylinder, and then reduced the wearing and tearing of the seal lip of piston head, prolonged working life.Another core of the present invention provides a kind of concrete pumping equipment that comprises above-mentioned concrete piston.
In order to make those skilled in the art person understand the present invention program better, the present invention is done further detailed description below in conjunction with accompanying drawing and embodiment.
Please refer to Fig. 4, Fig. 4 is first kind of concrete structure of piston schematic representation that embodiment provided of the present invention.
Shown in figure, in a kind of embodiment, concrete piston provided by the present invention comprises connecting rod 53 and piston head 51, and connecting rod 53 is hinged through cup-and-ball joint with piston head 51, and the centre of sphere of cup-and-ball joint is positioned at the front end of the seal lip of piston head 51.
Particularly; Piston head 51 comprises connecting plate 515, guide ring 511, piston body 512, concrete seal 514 and pressing plate 513; Wherein guide ring 511, piston body 512 and concrete seal 514 are arranged between connecting plate 515 and the pressing plate 513; Connecting plate 515 is connected through bolt 57 with pressing plate 513, and guide ring 511, piston body 512 and concrete seal 514 are clamped; Connecting rod 53 is hinged through cup-and-ball joint with piston head 51, is meant that piston head 51 can produce the drift angle with respect to connecting rod, thereby can satisfy the requirement of the coaxality of automatic adjustment piston head 51 and piston cylinder; The other end of connecting rod 53 can be connected with piston rod 56 through cassette joint 55.
Please with reference to Fig. 5, Fig. 5 is the stressed schematic representation concrete piston of the present invention produces angle under unstable state after.
Like this; Connecting rod 53 and piston head 51 are connected through cup-and-ball joint, in the course of the work, and when piston head 51 can not overlap with the axis of piston cylinder fully; Piston head 51 can freely rotate with respect to connecting rod 53; The coaxality of adjustment piston head 51 and piston cylinder, however meanwhile since piston head 51 be not stable connection being connected of connecting rod 53; Under the effect of concrete resistance; Piston head 51 also can be with respect to connecting rod 53 around articulating point rotation, owing to be positioned at the front end of seal lip of the concrete seal 514 of piston head 51 perpendicular to the bulb semi circular surface of the cup-and-ball joint of the center line of piston head 51, thereby piston head 51 is when connecting rod rotates around ball and socket point under to the effect of the directed force F 1 ' of articulating point; Produce pressure N ' between the seal lip of an opposite side and the sidewall of piston cylinder, receive the frictional force F2 ' of piston cylinder simultaneously with sense of rotation.At this moment; The directed force F 1 ' of 53 pairs of articulating points of connecting rod and piston cylinder form a pair of couple to the frictional force F2 ' of seal lip, and the action direction of this couple makes the angle theta of piston head 51 and connecting rod 53 ' reduce, until restPosing; Thereby return to piston head 51 and have the state of coaxality preferably with piston cylinder; Thereby improved the stress of piston head 51, reduced the wearing and tearing of piston head 51, prolonged its working life.
Can find out that concrete piston provided by the present invention not only can automatically be adjusted; Satisfy the coaxality requirement of piston head 51 and piston cylinder; And when under the effect that receives concrete active force, producing the drift angle, only need less action force that piston head 51 is set back, and the stress at each position of piston head 51 also improve; Thereby greatly reduce the wearing and tearing of piston head 51, prolonged its working life.
Please refer to Fig. 6, Fig. 6 is second kind of concrete structure of piston schematic representation that embodiment provided of the present invention.
Shown in figure; In a kind of embodiment; The front end of the connecting rod 53 of concrete piston provided by the present invention is provided with bulb 532, and the gland 513 of piston head offers the first hemisphere nest that matches with first hemispherical head 5321 of bulb 532, and the bulb pressing plate 52 that is arranged at connecting rod 53 1 sides offers the second hemisphere nest that matches with second hemispherical head 5322 of bulb 532; Gland 513 cooperatively interacts with bulb pressing plate 52, and bulb 532 is limited in the first hemisphere nest and the second hemisphere nest.
Particularly, above-mentioned first hemispherical head 5321, second hemispherical head 5322, the first hemisphere nest and the second hemisphere nest be not expression its be the half the of whole bulb or ball-and-socket, so long as the part of whole bulb or ball-and-socket all can.
It is thus clear that the structure that above-mentioned bulb and ball-and-socket cooperatively interact can realize the ball pivot between connecting rod 53 and the piston head 51 easily, satisfied the automatic adjustment of piston head 51 with respect to connecting rod 53, simple in structure, easy to connect.
Further, shown in figure, the centre of sphere of first hemispherical head 5321 overlaps with the centre of sphere of second hemispherical head 5322, and the radius of first hemispherical head 5321 has predetermined gap less than the radius of second hemispherical head 5322 between second hemispherical head 5322 and the gland 513.Thereby; No matter in installation process, or in the working procedure, can limited piston 51 a adjustment amount with respect to connecting rod 53; On the basis of satisfying the adjustment requirement; The activity that prevents piston head 51 is excessive, simultaneously can also be when piston head 51 receives concrete active force and deflects, for piston head provides certain reset response power.
Please refer to Fig. 7, the concrete structure of piston schematic representation that Fig. 7 is provided for the third embodiment of the present invention.
Shown in figure; In a kind of embodiment; The front end of the connecting rod 53 of concrete piston provided by the present invention is provided with the 3rd hemisphere nest 533; The gland 513 of piston head 51 is provided with the 3rd hemispherical head 5131 that matches with the madial wall of the 3rd hemisphere nest 533; The bulb pressing plate 52 that is arranged at connecting rod 53 1 sides is provided with the second hemisphere nest that matches with the outer side wall of the 3rd hemisphere nest 533, and gland 513 cooperatively interacts with bulb pressing plate 52, and the 3rd hemispherical head 5131 is limited in the 3rd hemisphere nest 533.
Can find out, by the way, can realize that equally piston head 51 is connected with the ball pivot of connecting rod 53, satisfy the self-adjusting requirement of piston head 51, reduce the wear extent of piston head 51, prolong its working life with respect to connecting rod 53.
Please refer to Fig. 8, Fig. 8 is the 4th kind of concrete structure of piston schematic representation that embodiment provided of the present invention.
Shown in figure; In a kind of embodiment; The front end of the connecting rod 53 of concrete piston provided by the present invention is provided with the 3rd hemisphere nest 533; The gland 513 of piston head 51 is provided with the first hemisphere nest that matches with the 3rd hemisphere nest 533; Be provided with steel ball 58 in the 3rd hemisphere nest 533 and the first hemisphere nest, the bulb pressing plate 52 that is arranged at connecting rod 53 1 sides offers the second hemisphere nest that matches with the outer side wall of the 3rd hemisphere nest 533, and bulb pressing plate 52 is limited to steel ball 58 in the first hemisphere nest and the second hemisphere nest with gland 513.
Similarly, the concrete piston with said structure still can satisfy the self-adjusting requirement of piston head 51 with respect to connecting rod 53, reduces the wear extent of piston head 51, prolongs its working life.
Certainly, except above-mentioned various embodiments, other can realize that piston head 51 with respect to connecting rod 53 rotations, reduces the wear extent of piston head 51, and the mode that prolongs its working life all is fine.
Certainly; For limited piston 51 a adjustment amount, on the basis of satisfying the adjustment requirement, prevent that the activity of piston head 51 is excessive with respect to connecting rod 53; Can between the cross section of the sidewall of the 3rd hemisphere nest 533 and gland 513, reserve predetermined gap; Like this, can also be when piston head 51 receives concrete active force and deflects, for piston head provides certain reset response power.
For ease being connected of bulb pressing plate 52 and gland 513, can on the two, offer the tapped hole of mutual correspondence, and connect through screw 54 or bolt.Certainly, bulb pressing plate 52 also can be connected through other modes with gland 513, as long as can realize that functional requirement all is fine.
Because in the course of the work, piston head 51 needs to rotate around articulating point all the time, thereby each parts of ball pivot are are constantly worn and torn, and in order to reduce above-mentioned wearing and tearing, can on connecting rod 53, offer oil duct 531, and oil duct 531 is communicated with fuel filler neck and cup-and-ball joint.
Please refer to Fig. 9, Fig. 9 is the 5th kind of concrete structure of piston schematic representation that embodiment provided of the present invention.
Particularly, as shown in Figure 9, above-mentioned fuel filler neck can be positioned at the tail end of connecting rod; Also can be positioned at its side, when fuel filler neck is positioned at the side of connecting rod, in the refueling process; Need not to dismantle cassette joint 55 and piston rod 56, thus the complexity when adding lubricant oil reduced.
Please refer to Figure 10, the structural representation of the concrete pumping equipment that Figure 10 is provided for a kind of embodiment of the present invention.
Shown in figure; In a kind of embodiment; The present invention also provides a kind of concrete pumping equipment, comprises piston cylinder 6 and the concrete piston 5 that matches with piston cylinder 6, and concrete piston 5 is above-mentioned each described concrete piston 5; The structure of these other each several parts of concrete pumping equipment please refer to existing technology, and this paper repeats no more.
More than concrete pumping equipment provided by the present invention and concrete piston thereof have been carried out detailed introduction.Used concrete example among this paper principle of the present invention and mode of execution are set forth, above embodiment's explanation just is used for helping to understand method of the present invention and core concept thereof.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 carry out some improvement and modification to the present invention, these improvement and modification also fall in the protection domain of claim of the present invention.
Claims (10)
1. a concrete piston comprises connecting rod and piston head, and said connecting rod and said piston head are hinged through cup-and-ball joint, it is characterized in that the centre of sphere of said cup-and-ball joint is positioned at the front end of the seal lip of said piston head.
2. concrete piston according to claim 1; It is characterized in that; The front end of said connecting rod is provided with bulb, and the gland of said piston head offers the first hemisphere nest that matches with first hemispherical head of said bulb, and the bulb pressing plate that is arranged at said connecting rod one side offers the second hemisphere nest that matches with second hemispherical head of said bulb; Said gland and said bulb pressing plate cooperatively interact, and said bulb is limited in the said first hemisphere nest and the second hemisphere nest.
3. concrete piston according to claim 2; It is characterized in that; The centre of sphere of said first hemispherical head overlaps with the centre of sphere of said second hemispherical head, and the radius of said first hemispherical head is less than the radius of said second hemispherical head, and has predetermined gap between said second hemispherical head and the said gland.
4. concrete piston according to claim 1; It is characterized in that; The front end of said connecting rod is provided with the 3rd hemisphere nest, and the gland of said piston head is provided with the 3rd hemispherical head that matches with the madial wall of said the 3rd hemisphere nest, and the bulb pressing plate that is arranged at said connecting rod one side is provided with the second hemisphere nest that matches with the outer side wall of said the 3rd hemisphere nest; Said gland and said bulb pressing plate cooperatively interact, and said the 3rd hemispherical head is limited in said the 3rd hemisphere nest.
5. concrete piston according to claim 1; It is characterized in that; The front end of said connecting rod is provided with the 3rd hemisphere nest; The gland of said piston head is provided with the first hemisphere nest that matches with said the 3rd hemisphere nest; Be provided with steel ball in said the 3rd hemisphere nest and the said first hemisphere nest, the bulb pressing plate that is arranged at said connecting rod one side offers the second hemisphere nest that matches with the outer side wall of said the 3rd hemisphere nest, and said bulb pressing plate and said gland are limited to said steel ball in said first hemisphere nest and the said second hemisphere nest.
6. according to claim 4 or 5 described concrete pistons, it is characterized in that having predetermined gap between the cross section of the sidewall of said the 3rd hemisphere nest and the said gland.
7. according to each described concrete piston of claim 2 to 5, it is characterized in that said bulb pressing plate is connected through screw with said gland.
8. according to each described concrete piston of claim 1 to 5, it is characterized in that, offer oil duct on the said connecting rod, said oil duct is communicated with fuel filler neck and said cup-and-ball joint.
9. concrete piston according to claim 8 is characterized in that, said fuel filler neck is positioned at the tail end or the side of said connecting rod.
10. a concrete pumping equipment comprises piston cylinder and the concrete piston that matches with said piston cylinder, it is characterized in that, said concrete piston is each described concrete piston of claim 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110268026.0A CN102410205B (en) | 2011-09-09 | 2011-09-09 | Concrete pumping equipment and concrete piston thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110268026.0A CN102410205B (en) | 2011-09-09 | 2011-09-09 | Concrete pumping equipment and concrete piston thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102410205A true CN102410205A (en) | 2012-04-11 |
| CN102410205B CN102410205B (en) | 2014-10-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110268026.0A Active CN102410205B (en) | 2011-09-09 | 2011-09-09 | Concrete pumping equipment and concrete piston thereof |
Country Status (1)
| Country | Link |
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| CN (1) | CN102410205B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103821694A (en) * | 2012-10-15 | 2014-05-28 | 日立空调·家用电器株式会社 | Sealed reciprocating movement compressor and refrigerator using the same |
| CN107701866A (en) * | 2017-10-19 | 2018-02-16 | 深圳市深精电科技有限公司 | Can incline zero-clearance pin cup assembly and has its equipment |
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| US6098518A (en) * | 1995-03-10 | 2000-08-08 | Audi Aktiengesellschaft | Piston with piston rod |
| CN201354731Y (en) * | 2008-11-28 | 2009-12-02 | 杭州中冷机电有限公司 | Refrigeration compressor piston with spherical holding part |
| CN201574922U (en) * | 2009-10-13 | 2010-09-08 | 三一重工股份有限公司 | Ball joint type concrete piston and concrete pumping equipment comprising same |
| CN201874804U (en) * | 2010-11-25 | 2011-06-22 | 宝鸡石油机械有限责任公司 | Mud pump piston rod device |
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2011
- 2011-09-09 CN CN201110268026.0A patent/CN102410205B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6098518A (en) * | 1995-03-10 | 2000-08-08 | Audi Aktiengesellschaft | Piston with piston rod |
| CN201354731Y (en) * | 2008-11-28 | 2009-12-02 | 杭州中冷机电有限公司 | Refrigeration compressor piston with spherical holding part |
| CN201574922U (en) * | 2009-10-13 | 2010-09-08 | 三一重工股份有限公司 | Ball joint type concrete piston and concrete pumping equipment comprising same |
| CN201874804U (en) * | 2010-11-25 | 2011-06-22 | 宝鸡石油机械有限责任公司 | Mud pump piston rod device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103821694A (en) * | 2012-10-15 | 2014-05-28 | 日立空调·家用电器株式会社 | Sealed reciprocating movement compressor and refrigerator using the same |
| CN103821694B (en) * | 2012-10-15 | 2016-08-10 | 日立空调·家用电器株式会社 | Enclosed reciprocating motion compressor and employ the refrigerator of this compressor |
| CN107701866A (en) * | 2017-10-19 | 2018-02-16 | 深圳市深精电科技有限公司 | Can incline zero-clearance pin cup assembly and has its equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102410205B (en) | 2014-10-15 |
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