CN103671080A - Piston mechanism and concrete pumping machine comprising same - Google Patents
Piston mechanism and concrete pumping machine comprising same Download PDFInfo
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- CN103671080A CN103671080A CN201310669381.8A CN201310669381A CN103671080A CN 103671080 A CN103671080 A CN 103671080A CN 201310669381 A CN201310669381 A CN 201310669381A CN 103671080 A CN103671080 A CN 103671080A
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Abstract
The invention provides a piston mechanism and a concrete pumping machine comprising the same. The piston mechanism comprises a piston head (10) and a piston rod (20). A containing groove (11) is formed in the piston head (10), and a first connected structure is arranged in the containing groove (11). The end of the piston rod (20) is fixedly provided with a connector (21) which is arranged in the containing groove (11) in a sliding mode, a second connected structure is arranged on the connector (21), the first connected structure and the second connected structure are configured in multiple continuous strokes of a piston, and the piston head (10) is driven to rotate in the first rotating direction relative to the piston rod (20). According to the piston mechanism, the problem that eccentric wear occurs to a piston in the prior art can be solved.
Description
Technical field
The present invention relates to mechanical field, in particular to a kind of piston mechanism and the concrete pumping machinery that comprises this piston mechanism.
Background technique
Concrete piston directly contacts with concrete in pumping procedure, is easy to wearing and tearing, belongs to expendable part.
In pumping system, due to inevitable stretching and the bending deflection producing in foozle, assembly error and pumping procedure, be difficult to guarantee have higher coaxality and straightness accuracy between concrete cylinder, oil cylinder, piston rod, pressure and the even wearing that when therefore concrete piston moves in concrete cylinder, cannot guarantee border, easily produce piston eccentric wear phenomenon.
Summary of the invention
The concrete pumping machinery that the present invention aims to provide a kind of piston mechanism and comprises this piston mechanism, to solve the problem of piston generation eccentric wear phenomenon in prior art.
To achieve these goals, according to an aspect of the present invention, provide a kind of piston mechanism, having comprised: piston head, piston head is provided with receiving groove, is provided with the first connected structure in receiving groove; Piston rod, the end of piston rod is fixedly installed connecting head, connecting head is slidably disposed in receiving groove, on connecting head, there is the second connected structure, the first connected structure and the second connected structure are configured in a plurality of continuous operations of piston, and driven plunger head rotates along the first sense of rotation relative to piston rod successively.
Further, piston head comprises the shrouding of the opening side that is arranged on receiving groove, and shrouding is spacing in receiving groove by the connecting head of piston rod, and piston head rotates in the same direction relative to piston rod.
Further, connecting head comprises towards the first end of the bottom land of receiving groove with towards the second end of shrouding, between the first end end face of connecting head and the bottom land of receiving groove, form the first inclined-plane pair that cooperatively interacts and piston head is rotated in a first direction with respect to piston rod, between the second end of connecting head and shrouding, form the second inclined-plane pair cooperatively interact and piston head is rotated in a second direction, with respect to piston rod, first direction and second direction are in the same way or oppositely.
Further, the first connected structure comprises the first helical teeth circle of the bottom that is fixedly installed on receiving groove, each tooth flank of tooth of the first helical teeth circle is all towards lopsidedness, and the second connected structure comprises and is arranged on the first end of connecting head and first drives gear ring with the first helical teeth circle matches.
Further, the first connected structure also comprises the second helical teeth circle of the inner side surface that is fixedly installed on shrouding, each tooth flank of tooth of the second helical teeth circle is all towards lopsidedness, and the second connected structure also comprises and is arranged on the second end of connecting head and second drives gear ring with the second helical teeth circle matches.
Further, the true dip direction of each tooth flank of tooth of the first helical teeth circle is contrary with the true dip direction of each tooth flank of tooth of the second helical teeth circle.
Further, the angle of inclination of each tooth flank of tooth of the first helical teeth circle is less than the angle of inclination of each tooth flank of tooth of the second helical teeth circle.
Further, the first connected structure comprises on the madial wall that is arranged on receiving groove and the guiding groove extending along the glide direction of connecting head, the second connected structure comprises on the outer side wall that is arranged on connecting head and the guide portion matching with guiding groove, and connecting head slides along guiding groove by guide portion.
Further, guiding groove is helical flute.
Further, on the outer side wall of connecting head, be provided with mounting groove, guide portion is arranged in mounting groove.
Further, mounting groove is annular mounting groove, and guide portion comprises the guide rod of a plurality of corresponding guiding groove settings and a plurality of guide rods are fixedly installed on to the link in annular mounting groove.
Further, guide rod has and stretches out the guiding state that annular mounting groove coordinates with guiding groove and be contained in the rounding state in annular mounting groove, and link is to be located in each guide rod and the torsion spring that guide rod is resetted to guiding state.
Further, connecting head comprises towards the first end of the bottom land of receiving groove with towards the second end of shrouding, the first end end face of connecting head comprises the first helicoid, the bottom land of receiving groove comprises the second helicoid matching with the first helicoid, the second end end face of connecting head comprises triple helical face, and the plate face of shrouding comprises the 4th helicoid matching with triple helical face.
According to a further aspect in the invention, provide a kind of concrete pumping machinery, comprised pumping oil cylinder, pumping oil cylinder comprises piston cylinder and be arranged on the piston mechanism in piston cylinder, and this piston mechanism is above-mentioned piston mechanism.
Apply technological scheme of the present invention, piston mechanism comprises piston head and piston rod.Piston head is provided with receiving groove, is provided with the first connected structure in receiving groove; The end of piston rod is fixedly installed connecting head, connecting head is slidably disposed in receiving groove, on connecting head, there is the second connected structure, the first connected structure and the second connected structure are configured in a plurality of continuous operations of piston, and driven plunger head rotates along the first sense of rotation successively relative to piston rod.In the process of piston mechanism work, when piston rod drives piston head to travel forward and moves backward, piston head can rotate certain angle, make the whole circumference of piston head can both uniform wear, therefore can prevent from, in the process of piston mechanism motion, eccentric wear is caused in certain position of piston head, the problem of scrapping in advance of avoiding piston head to produce because of eccentric wear, extends working life of piston, improves the utilization ratio of piston material simultaneously.
Accompanying drawing explanation
The accompanying drawing that forms a part of the present invention is used to provide a further understanding of the present invention, and schematic description and description of the present invention is used for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 shows the sectional structure schematic diagram according to the piston mechanism of the first embodiment of the present invention;
Fig. 2 shows the sectional structure schematic diagram of piston mechanism according to a second embodiment of the present invention;
Fig. 3 shows the main TV structure schematic diagram of the piston head of piston mechanism according to a second embodiment of the present invention; And
Fig. 4 show according to the A-A of Fig. 3 to sectional structure schematic diagram.
Reference character: 10, piston head; 20, piston rod; 30, shrouding; 11, receiving groove; 12, the first helical teeth circle; 13, guiding groove; 21, connecting head; 22, first drive gear ring; 23, second drive gear ring; 24, guide rod; 25, annular mounting groove; 26, link; 31, the second helical teeth circle.
Embodiment
Hereinafter with reference to accompanying drawing, also describe the present invention in detail in conjunction with the embodiments.It should be noted that, in the situation that not conflicting, embodiment and the feature in embodiment in the application can combine mutually.
As shown in Figures 1 to 4, according to embodiments of the invention, piston mechanism comprises that piston head 10 and piston rod 20 piston heads 10 are provided with receiving groove 11, are provided with the first connected structure in receiving groove; The end of piston rod 20 is fixedly installed connecting head 21, connecting head 21 is slidably disposed in receiving groove 11, on connecting head 21, there is the second connected structure, the first connected structure and the second connected structure are configured in a plurality of continuous operations of piston, and driven plunger 10 is rotated along the first sense of rotation relative to piston rod 20 successively.
Piston head 10 comprises shrouding 30, and shrouding 30 is fixedly installed on the receiving cavity opening side of piston head 10, and the connecting head of piston rod 20 21 is spacing in receiving groove 11, makes piston rod 20 can drive piston head to move together.Preferably, piston head 10 rotates in the same direction relative to piston rod 20.
Generally, piston head 10 is fixedly connected with piston rod 20, so piston rod 20 and piston head 10 are one synkinematic.Take pumping mechanism as example, due to inevitable stretching and the bending deflection producing in foozle, assembly error and pumping procedure, be difficult to guarantee have higher coaxality and straightness accuracy between concrete cylinder, piston cylinder and piston rod 20, when therefore concrete piston moves in concrete cylinder, cannot guarantee pressure and the even wearing of border, easily produce piston eccentric wear phenomenon, piston head 10 is caused to heel and toe wear.In this case, when piston head 10 serious wear, will cause piston to scrap, reduce the working life of piston, increase the cost of production of enterprise.
And pass through the solution of the present invention, make piston rod 20 in the process of sliding with respect to piston head 10, the relative piston rod 20 of piston head 10 relatively rotates along the first sense of rotation, because piston rod is fixedly installed, with respect to piston cylinder, can't rotate, therefore, in a plurality of strokes that travel forward and move backward at piston rod 20 drive piston heads 10, piston head 10 can relatively rotate along the first sense of rotation successively with respect to piston rod 20, also be that piston head 10 is with respect to the rotation of several angle can occur at each stroke between piston cylinder, thereby make the whole circumference of piston head 10 can uniform wear, and can not make eccentric wear between certain position and piston cylinder owing to rotating, cause scrapping of piston, therefore can extend the working life of piston, improve the utilization ratio of piston material simultaneously.
In conjunction with shown in Figure 1, according to the first embodiment of the present invention, in piston mechanism, connecting head 21 on piston rod 20 comprises towards the first end of the bottom land of receiving groove 11 with towards the second end of shrouding 30, between the first end end face of connecting head 21 and the bottom land of receiving groove 11, form the first inclined-plane pair that cooperatively interacts and piston head 10 is rotated in a first direction with respect to piston rod 20, between the second end of connecting head 21 and shrouding 30, form the second inclined-plane pair that cooperatively interacts and piston head 10 is rotated in a second direction, with respect to piston rod 20, first direction and second direction are in the same way or oppositely.Inclined-plane is herein to referring to two inclined-planes that are oppositely arranged and cooperatively interact, inclined-plane is to after can guaranteeing that the end face of connecting head 21 contacts with piston head 10 or shrouding 30, under the tilting action on inclined-plane, relatively rotate, thereby piston head 10 is turned an angle with respect to piston cylinder, make piston head 10 in the process of advancing or retreating, occur wearing and tearing can not be a position, avoid piston cylinder to cause eccentric wear to piston head 10.In addition, for inclined-plane, saying, is a plane gradually changing; therefore can guarantee that piston head 10 is not what settle at one go in the process of rotating; but rotate gradually, therefore each position even wearing of piston head 10 can be made, thereby piston head 10 can be protected better.
The first inclined-plane herein to the second inclined-plane to all can be for one or more, as long as can make piston head 10 when there is relative sliding with piston rod 20, finally can relatively rotate.
Preferably, in the present embodiment, relatively rotating between piston head 10 and piston rod 20 is the realization that coordinates by gear ring.The bottom of receiving groove 11 is provided with mounting groove, the first connected structure comprises the first helical teeth circle 12 being fixedly installed in mounting groove, each tooth flank of tooth of the first helical teeth circle 12 is all towards lopsidedness, the second connected structure comprises and is arranged on the first end of connecting head 21 and first drives gear ring 22 with the first helical teeth circle 12 matches, in the process of advancing at piston rod 20, first drives gear ring 22 to mesh with the first helical teeth circle 12, and a driven plunger 10 relative piston rod 20 rotate in the process of engagement.
Preferably, the first connected structure also comprises the second helical teeth circle 31 of the inner side surface that is fixedly installed on shrouding 30, each tooth flank of tooth of the second helical teeth circle 31 is all towards lopsidedness, the second connected structure also comprises and is arranged on the second end of connecting head 21 and second drives gear ring 23 with the second helical teeth circle 31 matches, in the process of advancing at piston rod 20, second drives gear ring 23 to mesh with the second helical teeth circle 31, and a driven plunger 10 relative piston rod 20 rotate in the process of engagement.Block side at shrouding 30 is provided with a groove, and the second helical teeth circle 31 is embedded in this groove.Adopt this kind of structure, can guarantee the activity space of the connecting head 21 of piston rod 20, and can not affect the overall performance of piston.Certainly, also can adopt the second helical teeth circle 31 is given prominence to the mode on shrouding 30 that is arranged at.
Preferably, the true dip direction of each tooth flank of tooth of the first helical teeth circle 12 is contrary with the true dip direction of each tooth flank of tooth of the second helical teeth circle 31, thus, in the process moving forward and backward at piston head 10,10 angles that can turn over of piston head will be larger, also just can guarantee piston head 10 to be ground position more even, can further improve the working life of piston and the utilization ratio of material.
The angle of inclination of each tooth flank of tooth of the first helical teeth circle 12 is less than the angle of inclination of each tooth flank of tooth of the second helical teeth circle 31.Because piston head 10 suffered resistance in the process of advancing is larger, and the resistance being subject in the process retreating is less, and therefore, the angle that during push piston, piston head 10 turns over must be less than the angle that while drawing piston, piston head 10 turns over.During push piston, piston is in pumping state, and pumping pressure is very large, and at this moment piston pressurized contacts very closely with concrete cylinder, and rotational resistance is also very large, so only turns over a very little angle during push piston, only plays the effect that allows gear ring stagger; While drawing piston, piston does not almost have compressive deformation, so rotational resistance is less, can play the effect of main rotation in this process, allows larger angle of piston rotation.The angle of rotating while therefore push piston being set is less than the angle of rotating while drawing piston.
When piston rod 20 promotes to touch the first helical teeth circle 12 forward, the helical teeth of piston rod 20 front ends can promote whole piston head 10 and rotate an angle (approximately 7 °).After the large end face of piston rod 20 front ends and the laminating of the large end face of piston head 10, helical teeth can not move on, and at this moment helical teeth is no longer stressed, and promote piston head 10 by end face, advances.
When piston rod 20 pulls back, exit after the first helical teeth circle 12, helical teeth on the helical teeth of piston rod 20 rear ends and the second helical teeth circle 31 staggers has certain small angle (approximately 3 °), when helical teeth contacts and pulls back, can pull whole piston head 10 to rotate an angle (approximately 15 °), turning to when this turns to push piston is consistent.After the ear end face of piston rod 20 and the laminating of the large end face of shrouding 30, helical teeth is no longer stressed, by end face, pulls piston head 10 to retreat.
When piston rod 20 is moved piston head 10 to the end, commutation will push piston 10 o'clock again, because piston head 10 has been rotated several angle in the process of drawing, at this moment the helical teeth on piston rod 20 front end helical teeth and the first helical teeth circle 12 staggers has certain small angle (approximately 3 °), in pushing course, still can turn an angle in the same direction.So circulation is gone down, and each pump cycles can allow piston head 10 turn over a tilt fixing (approximately 22 °) along fixed-direction, makes the whole axial direction of piston head 10 can uniform wear, thereby extends to greatest extent the working life of piston.
In a unshowned embodiment, connecting head 21 on piston rod 20 comprises towards the first end of the bottom land of receiving groove 11 with towards the second end of shrouding 30, the first end end face of connecting head 21 comprises the first helicoid, the bottom land of receiving groove 11 comprises the second helicoid matching with the first helicoid, the second end end face of connecting head 21 comprises triple helical face, and the plate face of shrouding 30 comprises the 4th helicoid matching with triple helical face.By cooperatively interacting between helicoid, can realize well at piston head 10, with respect to piston rod 20, the action also relatively rotating in relative sliding occur.Certainly, end face cooperation between piston head 10 and piston rod 20 and the end face between shrouding 30 and piston rod 20 coordinate the embodiment that can also adopt other, for example end face is equipped with to the shape into other, in addition also can be by adopting end face between piston head 10 and piston rod 20 coordinate, between shrouding 30 and piston rod 20, adopt other the mode such as other form cooperations to realize above-mentioned purpose.
In conjunction with referring to shown in Fig. 2 to Fig. 4, according to a second embodiment of the present invention, in piston mechanism, the first connected structure comprises on the madial wall of the receiving groove 11 being arranged on piston rod 20 and the guiding groove 13 extending along the glide direction of connecting head 21, the second connected structure comprises on the outer side wall that is arranged on connecting head 21 and the guide portion matching with guiding groove 13, and connecting head 21 slides along guiding groove 13 by guide portion.Preferably, guiding groove 13 extends to top from the bottom of receiving groove 11.This guiding groove 13 can be skewed slot, can be also spiral chute, and preferably, in the present embodiment, guiding groove 13 is helical flute.
Preferably, on the outer side wall of connecting head 21, be provided with mounting groove, guide portion is arranged in mounting groove.
Preferably, in the present embodiment, mounting groove is annular mounting groove 25, and annular mounting groove 25 is arranged on the outer side wall middle part of connecting head 21, and guide portion comprises the guide rod 24 that a plurality of corresponding guiding grooves 13 arrange and a plurality of guide rods 24 are fixedly installed on to the link 26 in annular mounting groove 25.Guide rod 24 has and stretches out the guiding state that annular mounting groove 25 coordinates with guiding groove 13 and be contained in the rounding state in annular mounting groove 25, and link 26 is for being located in each guide rod 24 and the torsion spring that guide rod 24 is resetted to guiding state.
Particularly, guide rod 24 is oval, and can in annular mounting groove 25, rotate.When guide rod 24 is when leading state, guide rod 24 stretches out outside annular mounting groove 25, and stretches into the interior track along guiding groove 13 of guiding groove 13 and slide, and makes piston head 10 in the process that piston rod 20 slides relatively, and also piston rod 20 rotates relatively.When guide rod 24 is during in rounding state, guide rod 24 is fully collapsed in annular mounting groove 25, thus not can and guiding groove 13 between there is matching relationship, in this process, piston head 10 can not relatively rotate with respect to piston rod 20, and relative sliding only occurs.
In the present embodiment, when piston rod 20 retreats, guide rod 24 stretches out, the side of guide rod 24 is connected on the side of annular mounting groove 25, sidewall by annular mounting groove 25 stops guide rod 24 to be poured in annular mounting groove 25 to retract, thereby coordinates piston head 10 is rotated with guiding groove 13.When piston rod 20 advances, the annular mounting groove 25 of the opposite side of guide rod 24 has larger holding space, therefore guide rod 24 can be connected on another sidewall of annular mounting groove 25, but upset is poured in annular mounting groove 25, under piston rod 20 advances the drag effect of suffered piston head 10, guide rod 24, all the time in retracted mode, can not interact with guiding groove 13.
Certainly, on connecting head 21, also annular mounting groove 25 can be set, and directly the outer side wall of connecting head 21 is designed to the structure matching with guiding groove 13, as long as can playing with guiding groove 13, it coordinates the effect that the relative piston rod 20 of piston head 10 is rotated.
According to embodiments of the invention, a kind of concrete pumping machinery is also provided, comprise pumping oil cylinder, pumping oil cylinder comprises piston cylinder and be arranged on the piston mechanism in piston cylinder, this piston mechanism is above-mentioned piston mechanism.
It should be noted that, piston mechanism of the present invention not only can be applied to concrete pumping machinery herein, can also be applied to other piston mechanisms, as long as applied the technological scheme of design philosophy of the present invention, all should belong to the application's protection domain.
As can be seen from the above description, the above embodiments of the present invention have realized following technique effect:
1. compared with prior art, the present invention can force the concrete piston structure of rotating, can allow piston head in each pump cycles, all along a fixed-direction, rotate a fixedly small angle, avoid eccentric wear, allow the whole circumference of piston head can both uniform wear, prevent that piston is because of scrapping in advance that eccentric wear produces, extend the working life of piston, also improved the utilization ratio of piston material simultaneously.
2. the present invention can force the concrete piston structure of rotating, and it allows piston produce to force the power rotating to be directed to the power that promotes piston pumping campaign, thereby realizes and force the function of rotating without separately establishing power source and motion, compact structure and simply.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (14)
1. a piston mechanism, is characterized in that, comprising:
Piston head (10), described piston head (10) is provided with receiving groove (11), is provided with the first connected structure in described receiving groove;
Piston rod (20), the end of described piston rod (20) is fixedly installed connecting head (21), described connecting head (21) is slidably disposed in described receiving groove (11), described connecting head has the second connected structure on (21), described the first connected structure and the second connected structure are configured in a plurality of continuous operations of piston, drive successively described piston head (10) to rotate along the first sense of rotation relative to described piston rod (20).
2. piston mechanism according to claim 1, it is characterized in that, described piston head (10) comprises the shrouding (30) of the opening side that is arranged on described receiving groove (11), described shrouding (30) is spacing in described receiving groove (11) by the connecting head of described piston rod (20) (21), and described piston head (10) rotates in the same direction relative to described piston rod (20).
3. piston mechanism according to claim 2, it is characterized in that, described connecting head (21) comprises towards the first end of the bottom land of described receiving groove (11) with towards the second end of described shrouding (30), between the bottom land of the first end end face of described connecting head (21) and described receiving groove (11), form the first inclined-plane pair that cooperatively interacts and described piston head (10) is rotated in a first direction with respect to described piston rod (20), between the second end of described connecting head (21) and described shrouding (30), form the second inclined-plane pair that cooperatively interacts and described piston head (10) is rotated in a second direction, with respect to described piston rod (20), described first direction and described second direction are in the same way or oppositely.
4. piston mechanism according to claim 3, it is characterized in that, described the first connected structure comprises the first helical teeth circle (12) of the bottom that is fixedly installed on described receiving groove (11), each tooth flank of tooth of described the first helical teeth circle (12) is all towards lopsidedness, and described the second connected structure comprises and is arranged on the first end of described connecting head (21) and first drives gear ring (22) with described the first helical teeth circle (12) matches.
5. piston mechanism according to claim 4, it is characterized in that, described the first connected structure also comprises the second helical teeth circle (31) of the inner side surface that is fixedly installed on described shrouding (30), each tooth flank of tooth of described the second helical teeth circle (31) is all towards lopsidedness, and described the second connected structure also comprises and is arranged on the second end of described connecting head (21) and second drives gear ring (23) with described the second helical teeth circle (31) matches.
6. piston mechanism according to claim 5, is characterized in that, the true dip direction of each tooth flank of tooth of described the first helical teeth circle (12) is contrary with the true dip direction of each tooth flank of tooth of described the second helical teeth circle (31).
7. piston mechanism according to claim 6, is characterized in that, the angle of inclination of each tooth flank of tooth of described the first helical teeth circle (12) is less than the angle of inclination of each tooth flank of tooth of described the second helical teeth circle (31).
8. piston mechanism according to claim 1, it is characterized in that, described the first connected structure comprises on the madial wall that is arranged on described receiving groove (11) and the guiding groove (13) extending along the glide direction of described connecting head (21), described the second connected structure comprises on the outer side wall that is arranged on described connecting head (21) and the guide portion matching with described guiding groove (13), and described connecting head (21) slides along described guiding groove (13) by described guide portion.
9. piston mechanism according to claim 8, is characterized in that, described guiding groove (13) is helical flute.
10. piston mechanism according to claim 8, is characterized in that, on the outer side wall of described connecting head (21), is provided with mounting groove, and described guide portion is arranged in described mounting groove.
11. piston mechanisms according to claim 10, it is characterized in that, described mounting groove is annular mounting groove (25), and described guide portion comprises the guide rod (24) that the described guiding groove of a plurality of correspondences (13) arranges and a plurality of described guide rods (24) are fixedly installed on to the link (26) in described annular mounting groove (25).
12. piston mechanisms according to claim 11, it is characterized in that, described guide rod (24) has and stretches out the guiding state that described annular mounting groove (25) coordinates with described guiding groove (13) and be contained in the rounding state in described annular mounting groove (25), and described link (26) is for being located in described in each in guide rod (24) and the torsion spring that described guide rod (24) is resetted to guiding state.
13. piston mechanisms according to claim 2, it is characterized in that, described connecting head (21) comprises towards the first end of the bottom land of described receiving groove (11) with towards the second end of described shrouding (30), the first end end face of described connecting head (21) comprises the first helicoid, the bottom land of described receiving groove (11) comprises the second helicoid matching with described the first helicoid, the second end end face of described connecting head (21) comprises triple helical face, and the plate face of described shrouding (30) comprises the 4th helicoid matching with described triple helical face.
14. 1 kinds of concrete pumping machineries, comprise pumping oil cylinder, and described pumping oil cylinder comprises and it is characterized in that piston cylinder and be arranged on the piston mechanism in described piston cylinder, and described piston mechanism is the piston mechanism described in any one in claim 1 to 13.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310669381.8A CN103671080B (en) | 2013-12-10 | 2013-12-10 | Piston mechanism and comprise the concrete pumping machinery of this piston mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310669381.8A CN103671080B (en) | 2013-12-10 | 2013-12-10 | Piston mechanism and comprise the concrete pumping machinery of this piston mechanism |
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| Publication Number | Publication Date |
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| CN103671080A true CN103671080A (en) | 2014-03-26 |
| CN103671080B CN103671080B (en) | 2016-03-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310669381.8A Active CN103671080B (en) | 2013-12-10 | 2013-12-10 | Piston mechanism and comprise the concrete pumping machinery of this piston mechanism |
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| CN (1) | CN103671080B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112049791A (en) * | 2020-09-22 | 2020-12-08 | 西南石油大学 | Plunger of oil-well pump without traveling valve |
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| JPS61197772A (en) * | 1985-02-28 | 1986-09-02 | Kawasaki Heavy Ind Ltd | Mud pump piston |
| CN201265519Y (en) * | 2008-09-22 | 2009-07-01 | 贝世伟 | Self-rotating plunger oil pump |
| CN102410206A (en) * | 2011-09-23 | 2012-04-11 | 三一重工股份有限公司 | Concrete piston structure, pumping system and concrete pump |
| CN102913445A (en) * | 2012-10-29 | 2013-02-06 | 陕西联盟物流有限公司 | Plunger self-rotating device |
| CN203584786U (en) * | 2013-12-10 | 2014-05-07 | 中联重科股份有限公司 | Piston mechanism and concrete pumping machine comprising same |
-
2013
- 2013-12-10 CN CN201310669381.8A patent/CN103671080B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61197772A (en) * | 1985-02-28 | 1986-09-02 | Kawasaki Heavy Ind Ltd | Mud pump piston |
| CN201265519Y (en) * | 2008-09-22 | 2009-07-01 | 贝世伟 | Self-rotating plunger oil pump |
| CN102410206A (en) * | 2011-09-23 | 2012-04-11 | 三一重工股份有限公司 | Concrete piston structure, pumping system and concrete pump |
| CN102913445A (en) * | 2012-10-29 | 2013-02-06 | 陕西联盟物流有限公司 | Plunger self-rotating device |
| CN203584786U (en) * | 2013-12-10 | 2014-05-07 | 中联重科股份有限公司 | Piston mechanism and concrete pumping machine comprising same |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112049791A (en) * | 2020-09-22 | 2020-12-08 | 西南石油大学 | Plunger of oil-well pump without traveling valve |
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| Publication number | Publication date |
|---|---|
| CN103671080B (en) | 2016-03-02 |
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