CN103410724B - A kind of twin-tub pumping installations and concrete mixer - Google Patents
A kind of twin-tub pumping installations and concrete mixer Download PDFInfo
- Publication number
- CN103410724B CN103410724B CN201310277148.5A CN201310277148A CN103410724B CN 103410724 B CN103410724 B CN 103410724B CN 201310277148 A CN201310277148 A CN 201310277148A CN 103410724 B CN103410724 B CN 103410724B
- Authority
- CN
- China
- Prior art keywords
- buffer mouth
- mouth
- cylinder
- buffer
- piston
- Prior art date
- Legal status (The legal status 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 status listed.)
- Active
Links
Landscapes
- Reciprocating Pumps (AREA)
Abstract
The invention discloses a kind of twin-tub pumping installations and concrete mixer, wherein, master cylinder cylinder barrel is buffer mouth and the second rear buffer mouth after the side away from conveying cylinder forms spaced first along this length direction, after first, buffer mouth is connected by rear separator tube with buffer mouth after second, when the head of main oil cylinder piston is between the first rear buffer mouth and the second rear buffer mouth, after the imbricate of buffer mouth behind the edge of the head of main oil cylinder piston and first and main oil cylinder piston do not block first during buffer mouth, the center of the head of concrete piston is corresponding with lubricating mouth.Pass through technique scheme, can cushion its motion when the region of buffer mouth after buffer mouth and second after concrete piston movement to first, now concrete piston is corresponding with lubrication mouth, the lubrication of lubricant oil to concrete piston is more accurate, reduce the wearing and tearing that concrete piston causes due to insufficient lubrication, improve reliability and the working life of pumping installations.
Description
Technical field
The present invention relates to engineering machinery, particularly, relate to a kind of twin-tub pumping installations and concrete mixer.
Background technique
At present, pumping installations is usually used to carry out pumping material at engineering field.Twin-tub pumping installations is a kind of pumping installations relatively commonly used.
Usually, twin-tub pumping installations comprises two conveyings cylinder (i.e. concrete cylinder) and master cylinder, the main oil cylinder piston of two master cylinders connects with the concrete piston of corresponding conveying cylinder respectively, and namely the main oil cylinder piston of two master cylinders drives two concrete pistons to move back and forth respectively accordingly.These two master cylinders can be set to rod chamber and be communicated with or rodless cavity connection, and two disconnected sides of master cylinder are connected with to master cylinder fuel feeding with oil pump, the moving direction of such two main oil cylinder pistons is contrary, thus drive two concrete piston movements, when a concrete piston sucks material, another concrete piston pushes material, and alternately shuttling movement, to realize the function of pumping material.
The working procedure of the pumping mechanism of concrete mixer drives concrete reciprocating motion of the pistons with the piston rod of the master cylinder of two series connection, alternately to suck, to push material.In this course, concrete piston constantly sucks and pushes concrete, is easy to wear and tear, and therefore needs the wearing and tearing lubricating to reduce concrete piston in pumping procedure to concrete piston.
Pumping mechanism generally includes master cylinder, conveying cylinder, concrete piston, hopper, distributing mechanism and stirring mechanism etc.Wherein, the rodless cavity of two master cylinders is cascaded, and the oil cylinder piston of two master cylinders is connected with concrete piston respectively, thus drives concrete piston to move back and forth in conveying cylinder.
At present, at conveying cylinder, the side of master cylinder is provided with lubrication mouth, when in tilt cylinder commutation process, utilizes tilt cylinder hydraulic oil to drive lubricant pump, and then from lubrication mouth output lubricating grease, concrete piston is lubricated.
But, because the precision of hydraulic system is lower, being difficult to accurately control flow, therefore cannot guaranteeing that concrete piston is just parked in the position relative with lubricating mouth when lubrication mouth exports lubricating grease.If rate of pumping is fast, concrete piston may slip over lubrication mouth and can not get lubrication; If rate of pumping is slow, concrete piston may run less than lubrication mouth, also can not get lubrication.
Summary of the invention
The object of this invention is to provide a kind of twin-tub pumping installations, this twin-tub pumping installations can realize lubricating more accurately concrete piston.
To achieve these goals, the invention provides a kind of twin-tub pumping installations, this twin-tub pumping installations comprises two conveying cylinders and two master cylinders for driving the concrete piston in described conveying cylinder alternately flexible, the main oil cylinder piston of master cylinder described in each connects with the described concrete piston in corresponding described conveying cylinder respectively, wherein, the side near corresponding described master cylinder of cylinder is carried to be provided with lubrication mouth described in each, the master cylinder cylinder barrel of master cylinder described in each buffer mouth after buffer mouth and second after the side away from described conveying cylinder forms spaced first along the length direction of this master cylinder, this first rear buffer mouth is than the described conveying cylinder of this second rear buffer mouth closer to correspondence, after described first, buffer mouth is connected by rear separator tube with buffer mouth after second, after this first rear buffer mouth and second, the relative position of buffer mouth is arranged so that when the head of described main oil cylinder piston is between the described first rear buffer mouth and the second rear buffer mouth, the head of described concrete piston is corresponding with described lubrication mouth,
When the head of described main oil cylinder piston is after described first after buffer mouth and second between buffer mouth, after the imbricate of buffer mouth behind the edge of the head of described main oil cylinder piston and described first and described main oil cylinder piston do not block described first during buffer mouth, the center of the head of described concrete piston is corresponding with described lubrication mouth.
Preferably, after buffer mouth and/or second, buffer mouth can be multiple along the setting of described master cylinder cylinder barrel circumference after described first.
Preferably, described pumping installations also comprises the main pump to described master cylinder fuel feeding, and the flow after the bore of buffer mouth and the caliber of described rear separator tube make described first after buffer mouth and second after described first after buffer mouth and second between buffer mouth is greater than the flow of the fuel feeding of described main pump.
Preferably, after described first, after buffer mouth and second, the bore of buffer mouth and the caliber of described rear separator tube make when the described first rear buffer mouth partly blocks by the head of described main oil cylinder piston, and the pressure of the rodless cavity side of described master cylinder keeps the pressure being more than or equal to rod chamber side.
Preferably, described main pump is connected with the rod chamber of described master cylinder, and the rodless cavity of described master cylinder is communicated with, or described main pump is connected with the rodless cavity of described master cylinder, and the rod chamber of described master cylinder is communicated with.
Preferably, the master cylinder cylinder barrel of described master cylinder buffer mouth before buffer mouth and second before the side close to described conveying cylinder is formed with first along the length direction of master cylinder, this before first buffer mouth than this, buffer mouth is closer to described conveying cylinder before second, before described first, buffer mouth is connected by front separator tube with buffer mouth before second.
Preferably, before described first before buffer mouth and/or second buffer mouth can be along described master cylinder cylinder barrel circumference arrange multiple.
Preferably, before described first, before buffer mouth and/or second, the bore of buffer mouth is equal with the bore of buffer mouth after buffer mouth after described first and/or second, and the caliber of described front separator tube is equal with the caliber of described rear separator tube.
The present invention also provides a kind of concrete mixer, and wherein, this concrete mixer comprises twin-tub pumping installations of the present invention.
Pass through technique scheme, concrete piston is alternately fore and aft motion in conveying cylinder, can cushion its motion when the region of buffer mouth after buffer mouth and second after concrete piston movement to first, now concrete piston is corresponding with lubrication mouth, lubricant oil can lubricate concrete piston, thus make lubrication more accurate, reduce the wearing and tearing that concrete piston causes due to insufficient lubrication, improve reliability and the working life of pumping installations.
Other features and advantages of the present invention are described in detail in embodiment part subsequently.
Accompanying drawing explanation
Accompanying drawing is used to provide a further understanding of the present invention, and forms a part for specification, is used from explanation the present invention, but is not construed as limiting the invention with embodiment one below.In the accompanying drawings:
Fig. 1 is the schematic diagram of twin-tub pumping installations according to the preferred embodiment of the present invention.
Description of reference numerals
10 conveying cylinder 12 concrete pistons
20 master cylinder 21 master cylinder cylinder barrels
Buffer mouth after 22 main oil cylinder pistons 23 first
Separator tube after buffer mouth 25 after 24 second
Buffer mouth before buffer mouth 27 second before 26 first
Before 28, separator tube 3 lubricates mouth
The head of head 221 main oil cylinder piston of 121 concrete pistons
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail.Should be understood that, embodiment described herein, only for instruction and explanation of the present invention, is not limited to the present invention.
In the present invention, when not doing contrary explanation, the noun of locality of use understand according to its usual implication or by reference to the accompanying drawings and contextual description suitably explain.
The invention provides a kind of twin-tub pumping installations, this twin-tub pumping installations comprises two conveying cylinders 10 and two master cylinders 20 for driving the concrete piston 12 in described conveying cylinder 10 alternately flexible, the main oil cylinder piston 22 of master cylinder 20 described in each connects with the described concrete piston 12 in corresponding described conveying cylinder 10 respectively, wherein, the side near corresponding described master cylinder 20 of cylinder 10 is carried to be provided with lubrication mouth 3 described in each, the master cylinder cylinder barrel 21 of master cylinder 20 described in each buffer mouth 24 after buffer mouth 23 and second after the side away from described conveying cylinder 10 forms spaced first along the length direction of this master cylinder 20, this first rear buffer mouth 23 is than the described conveying cylinder 10 of this second rear buffer mouth 24 closer to correspondence, after described first, buffer mouth 23 is connected by rear separator tube 25 with buffer mouth 24 after second, the relative position of this first rear buffer mouth 23 and the second rear buffer mouth 24 is arranged so that when the head 221 of described main oil cylinder piston 22 is between the described first rear buffer mouth 23 and the second rear buffer mouth 24, the head 121 of described concrete piston 12 is corresponding with described lubrication mouth 3.
According to technological scheme of the present invention, buffer mouth 23 and the second rear buffer mouth 24 after the side away from conveying cylinder 10 of the master cylinder cylinder barrel 21 of master cylinder arranges first, and be connected with rear separator tube 25 between buffer mouth 23 and the second rear buffer mouth 24 after first.This buffer mouth 24 and connecting and rear separator tube 25 therebetween after buffer mouth 23, second after first, so just at master cylinder 20 away from buffer area after carrying the side of cylinder 10 to be formed.
For convenience of description, hereafter the main working condition of preferred implementation to pumping installations combined as shown in Figure 1 is described, and wherein the rodless cavity of two master cylinders 20 is communicated with, and oil pump is to the rod chamber fuel feeding of master cylinder 20.When the head 221 of main oil cylinder piston 22 is between the first rear buffer mouth 23 and the second rear buffer mouth 24, after first, buffer mouth 23 is positioned at the rod chamber side of master cylinder 20, after second, buffer mouth 24 is positioned at the rodless cavity side of master cylinder 20, the rod chamber of such master cylinder 20 and rodless cavity are just by the first rear buffer mouth 23, rear separator tube 25 is communicated with buffer mouth 24 after second, hydraulic oil in rod chamber flows into rodless cavity, thus make the liquid pressure in rod chamber and rodless cavity equal, but because the area of the head 221 of main oil cylinder piston in rodless cavity 22 is larger, therefore the pressure of rodless cavity side hydraulic oil is greater than the pressure of rod chamber side hydraulic oil, thus the head 221 of promotion main oil cylinder piston 22 is to rod chamber one lateral movement.When the head 221 that main oil cylinder piston 22 moves is by the blocking of buffer mouth 23 part after first, the hydraulic oil that rod chamber is carried to rodless cavity reduces, at this time the pressure of the rod chamber side of master cylinder 20 raises, main oil cylinder piston 22 is increased to the resistance of rod chamber one lateral movement, thus reach the effect of buffering, but the pressure of the rodless cavity side of main oil cylinder piston 22 is still greater than the pressure of rod chamber side, therefore main oil cylinder piston 22 entirety keeps the trend to rod chamber one lateral movement.
According to above-mentioned principle, by arranging the first rear buffer mouth 23 and the second rear buffer mouth 24 be interconnected on master cylinder cylinder barrel 21, not only can prevent the head 221 of main oil cylinder piston 22 from colliding with the sidewall of the end of master cylinder cylinder barrel 21 in movement process, absorb the momentum of main oil cylinder piston 22, serve the effect of damping and protection; The movement velocity of main oil cylinder piston 22 can also be made to reduce, make the area oscillation motion of the head 221 of main oil cylinder piston 22 after first between buffer mouth 23 and the second rear buffer mouth 24, and when the head 221 of main oil cylinder piston 22 is between the described first rear buffer mouth 23 and the second rear buffer mouth 24, the head 121 of described concrete piston 12 is corresponding with described lubrication mouth 3, thus can guarantee the head 121 of concrete piston 12 and lubricate aiming at and sufficient lubrication of mouth 3.
Pass through technique scheme, concrete piston is alternately fore and aft motion in conveying cylinder, can cushion its motion when the region of buffer mouth after buffer mouth and second after concrete piston movement to first, now concrete piston is corresponding with lubrication mouth, lubricant oil can lubricate concrete piston, thus make lubrication more accurate, reduce the wearing and tearing that concrete piston causes due to insufficient lubrication, improve reliability and the working life of pumping installations.
Preferably, when the head 221 of described main oil cylinder piston 22 is after described first after buffer mouth 23 and second between buffer mouth 24, after the imbricate of buffer mouth 23 behind the edge of the head 221 of described main oil cylinder piston 22 and described first and described main oil cylinder piston 22 do not block described first during buffer mouth 23, the center of the head 121 of described concrete piston 12 is corresponding with described lubrication mouth 3.
According to above to the description of the principle of kicking motion, when head 221 beginning that main oil cylinder piston 22 moves block first after buffer mouth 23 time, the head 221 of main oil cylinder piston 22 starts to carry out oscillatory movement by a small margin.Therefore, in order to lubricate better concrete piston 12, according to this preferred implementation, when the head 221 of main oil cylinder piston 22 is after first after buffer mouth 23 and second between buffer mouth 24, and after behind the edge of the head 221 of main oil cylinder piston 22 and first, the imbricate of buffer mouth 23 and the head 221 of main oil cylinder piston 22 block first during buffer mouth 23, the center of the head 121 of concrete piston 12 is corresponding with lubricating mouth 3.
The object of above-mentioned preferred implementation is that also can adjust adaptively according to actual conditions, the present invention is not limited this in order to make concrete piston 12 to aim at lubrication mouth 3 thus to improve lubrication effect better.
Preferably, after buffer mouth 23 and/or second, buffer mouth 24 be multiple along the setting of described master cylinder cylinder barrel 21 circumference after described first.
According to the preferred embodiment of the present invention, the rod chamber of master cylinder 20 and the connectedness of rodless cavity can be improved further when buffer mouth 23 and/or the second rear buffer mouth 24 are set to multiple after first, thus play cushioning effect better.Wherein, quantity and the position of the first rear buffer mouth 23 and the second rear buffer mouth 24 can correspondingly be arranged according to actual needs, but after buffer mouth 23 and second, buffer mouth 24 is determined respectively along the position of the length direction of master cylinder 20 and equal after first, therefore after multiple first buffer mouth 23 on master cylinder cylinder barrel 21 for circumferentially to arrange, namely the multiple first rear buffer mouth 23 is arranged on circumferentially same, and this circumference axis centered by the axis of master cylinder 20.After multiple second, the setting of buffer mouth 24 also in like manner.Preferably, after first, buffer mouth 23 is equal with the quantity of buffer mouth 24 after second, and position is corresponding along the length direction of master cylinder 20.
Preferably, described pumping installations also comprises the main pump to described master cylinder 20 fuel feeding, and the flow after described first after buffer mouth 23 and second described in the bore of buffer mouth 24 and the caliber of described rear separator tube 25 after first after buffer mouth 23 and second between buffer mouth 24 is greater than the flow of the fuel feeding of described main pump.
According to principle mentioned above, after first after buffer mouth 23 and second bore of buffer mouth 24 and the caliber of rear separator tube 25 larger, the rod chamber of master cylinder 20 and the connectedness of rodless cavity are just better, and the liquid pressure be embodied in rod chamber and rodless cavity can balance quickly.
Therefore, in the preferred embodiment, by suitably arranging after first the bore of buffer mouth 24 and the caliber of rear separator tube 25 after buffer mouth 23 and second, with the flow making the flow between the first rear buffer mouth 23 and the second rear buffer mouth 24 be greater than the fuel feeding of described main pump, that is between the rod chamber of master cylinder 20 and rodless cavity pressure equilibrium process than main pump to the rod chamber of master cylinder 20 or the speed of rodless cavity fuel feeding faster, pressure equilibrium can be reached when so just can make the rod chamber of master cylinder 20 and rodless cavity between the first rear buffer mouth 23 and the second rear buffer mouth 24, thus make main oil cylinder piston 22 to rod chamber one lateral movement.
It should be noted that, the above-mentioned principle rodless cavity be applicable to as shown in Figure 1 is communicated with the mode of execution that rod chamber leads to oil, is also applicable to the mode of execution (not shown) that rod chamber connection rodless cavity leads to oil.
Preferably, when after after buffer mouth 23 and second, the bore of buffer mouth 24 and the caliber of described rear separator tube 25 make the head 221 when described main oil cylinder piston 22 by described first after described first, buffer mouth 23 partly blocks, the pressure maintenance of the rodless cavity side of described master cylinder 20 is more than or equal to the pressure of rod chamber side.
In like manner, in the preferred embodiment, by suitably arranging after first the bore of buffer mouth 24 and the caliber of rear separator tube 25 after buffer mouth 23 and second, to make when described main oil cylinder piston 22 partly blocks the described first rear buffer mouth 23, the pressure of the rodless cavity side of described master cylinder 20 keeps the pressure being more than or equal to rod chamber side.
That is, after the rod chamber of master cylinder 20 and the pressure balance of rodless cavity, because the liquid effects area of rodless cavity is greater than rod chamber, therefore main oil cylinder piston 22 under the effect of hydraulic oil to rod chamber one lateral movement, so the head 221 of main oil cylinder piston 22 can move to the part starting to block buffer mouth 23 after first, now the first rear buffer mouth 23 partly blocks by the head 221 of main oil cylinder piston 22, after first, the bore of buffer mouth 23 reduces, thus affect the circulation of hydraulic oil between rod chamber and rodless cavity, the flow of hydraulic oil between rod chamber and rodless cavity is made to reduce particularly.
Rod chamber is communicated with for rodless cavity as shown in Figure 1 and leads to oily mode of execution, between rod chamber and rodless cavity, the flow of hydraulic oil reduces, and when rod chamber side passes into hydraulic oil, the speed that rod chamber side pressure rises will be greater than the speed that rodless cavity side pressure rises, thus main oil cylinder piston 22 is reduced to the speed of the motion of rod chamber side, but by the setting to the first rear buffer mouth 23 and the bore of the second rear buffer mouth 24 and the caliber of rear separator tube 25, can when the first rear buffer mouth 23 partly blocks by the head 221 of main oil cylinder piston 22, still guarantee that the pressure of the rodless cavity side of master cylinder 20 is more than or equal to the pressure of rod chamber side, after so just ensureing the position that head 221 motion of main oil cylinder piston 22 reaches after first between buffer mouth 23 and the second rear buffer mouth 24, not only can there is oscillation buffer by a small margin, can also guarantee that main oil cylinder piston 22 can oppositely to rod chamber one lateral movement of master cylinder 20.
Rodless cavity is communicated with for rod chamber and leads to oily mode of execution, in the rodless cavity of the master cylinder of first wherein 20 during logical oil, main oil cylinder piston 22 is to rod chamber one lateral movement, the concrete piston 12 be connected with this main oil cylinder piston 22 outwards pushes material, because the rod chamber of two master cylinders 20 is communicated with, therefore the main oil cylinder piston 22 of second master cylinder 20 drives corresponding concrete piston 12 to suck material to rodless cavity one lateral movement.When the head 221 of the main oil cylinder piston 22 of second master cylinder 20 moves between the first rear buffer mouth 23 of second master cylinder 20 and the second rear buffer mouth 24, pressure in the rodless cavity of second master cylinder 20 is equal with the pressure in rod chamber, now the pressure of the rodless cavity side of second master cylinder 20 is greater than the pressure of rod chamber side, after so just ensureing the position that head 221 motion of second main oil cylinder piston 22 reaches after first between buffer mouth 23 and the second rear buffer mouth 24, not only can there is oscillation buffer by a small margin, can also guarantee that second main oil cylinder piston 22 can oppositely to rod chamber one lateral movement of master cylinder 20.
In sum, the preferred embodiment of the present invention rodless cavity be applicable to as shown in Figure 1 is communicated with the mode of execution that rod chamber leads to oil, is also applicable to the mode of execution (not shown) that rod chamber connection rodless cavity leads to oil.
In conjunction with mentioned above known, preferably, described main pump is connected with the rod chamber of described master cylinder 20, and the rodless cavity of described master cylinder 20 is communicated with, or described main pump is connected with the rodless cavity of described master cylinder 20, and the rod chamber of described master cylinder 20 is communicated with.Technological scheme of the present invention is communicated with for rodless cavity mode of execution that rod chamber leads to oil and is communicated with rodless cavity with rod chamber to lead to oily mode of execution all applicable.
Preferably, the master cylinder cylinder barrel 21 of described master cylinder 20 buffer mouth 27 before buffer mouth 26 and second before the side close to described conveying cylinder 10 is formed with first along the length direction of master cylinder 20, this before first buffer mouth 26 than this, buffer mouth 27 is closer to described conveying cylinder 10 before second, before described first, buffer mouth 26 is connected by front separator tube 28 with buffer mouth before second 27.Preferably, before described first before buffer mouth 26 and/or second buffer mouth 27 be along described master cylinder cylinder barrel 21 circumference arrange multiple.
In the preferred embodiment, buffer mouth 27 before buffer mouth 26 and second before the master cylinder cylinder barrel 21 of master cylinder 20 is also provided with first, the described first front buffer mouth 27 of front buffer mouth 26, second and after being connected to effect and principle thereof and first that front separator tube 28 therebetween plays after buffer mouth 23, second buffer mouth 24 and rear separator tube 25 similar, repeat no more herein.
Preferably, before described first before buffer mouth 26 and/or second buffer mouth 27 bore and buffer mouth after described first 23 and/or second after the bore of buffer mouth 24 equal, the caliber of described front separator tube 28 is equal with the caliber of described rear separator tube 25.
In a preferred embodiment of the invention, before first before buffer mouth 26, second after buffer mouth 27, first after buffer mouth 23 and second bore of buffer mouth 24 all equal, and the also equal and bore that is buffer mouth 24 after equaling before first before buffer mouth 26, second buffer mouth after buffer mouth 27, first 23 and second of the caliber of front separator tube 28 and rear separator tube 25.
It should be noted that, technological scheme of the present invention not only may be used for rod chamber oil-feed rodless cavity connected sum rodless cavity oil-feed rod chamber and is communicated with the many modes of connection, open type hydraulic system and closed type hydraulic system can also be applied to, although principle is slightly different in open type hydraulic system and closed type hydraulic system, the effect used is identical.
The present invention also provides a kind of concrete mixer, and wherein, this concrete mixer comprises pumping installations of the present invention.
Below the preferred embodiment of the present invention is described in detail by reference to the accompanying drawings; but; the present invention is not limited to the detail in above-mentioned mode of execution; within the scope of technical conceive of the present invention; can carry out multiple simple variant to technological scheme of the present invention, these simple variant all belong to protection scope of the present invention.
It should be noted that in addition, each concrete technical characteristics described in above-mentioned embodiment, in reconcilable situation, can be combined by any suitable mode, in order to avoid unnecessary repetition, the present invention illustrates no longer separately to various possible compound mode.
In addition, also can carry out combination in any between various different mode of execution of the present invention, as long as it is without prejudice to thought of the present invention, it should be considered as content disclosed in this invention equally.
Claims (9)
1. a twin-tub pumping installations, this twin-tub pumping installations comprises two conveyings cylinder (10) and two master cylinders (20) for driving the concrete piston (12) in described conveying cylinder (10) alternately flexible, the main oil cylinder piston (22) of master cylinder described in each (20) connects with the described concrete piston (12) in corresponding described conveying cylinder (10) respectively, it is characterized in that, the side near corresponding described master cylinder (20) of cylinder (10) is carried to be provided with lubrication mouth (3) described in each, the master cylinder cylinder barrel (21) of master cylinder described in each (20) is buffer mouth (23) and second buffer mouth (24) afterwards after the side away from described conveying cylinder (10) forms spaced first along the length direction of this master cylinder (20), this first rear buffer mouth (23) is than the described conveying cylinder (10) of this second rear buffer mouth (24) closer to correspondence, after described first, buffer mouth (23) is connected by rear separator tube (25) with buffer mouth (24) after second, after this first rear buffer mouth (23) and second, the relative position of buffer mouth (24) is arranged so that when the head (221) of described main oil cylinder piston (22) is positioned between the described first rear buffer mouth (23) and the second rear buffer mouth (24), the head (121) of described concrete piston (12) is corresponding with described lubrication mouth (3)
When the head (221) of described main oil cylinder piston (22) is positioned between the described first rear buffer mouth (23) and the second rear buffer mouth (24), after the imbricate of buffer mouth (23) behind the edge of the head (221) of described main oil cylinder piston (22) and described first and described main oil cylinder piston (22) do not block described first time buffer mouth (23), the center of the head (121) of described concrete piston (12) is corresponding with described lubrication mouth (3).
2. twin-tub pumping installations according to claim 1, is characterized in that, after buffer mouth (23) and/or second, buffer mouth (24) be multiple along the setting of described master cylinder cylinder barrel (21) circumference after described first.
3. twin-tub pumping installations according to claim 1, it is characterized in that, described pumping installations also comprises the main pump to described master cylinder (20) fuel feeding, and the flow after the bore of buffer mouth (24) and the caliber of described rear separator tube (25) make described first after buffer mouth (23) and second after described first after buffer mouth (23) and second between buffer mouth (24) is greater than the flow of the fuel feeding of described main pump.
4. twin-tub pumping installations according to claim 3, it is characterized in that, after described first, after buffer mouth (23) and second, the bore of buffer mouth (24) and the caliber of described rear separator tube (25) make when the described first rear buffer mouth (23) partly blocks by the head (221) of described main oil cylinder piston (22), and the pressure of the rodless cavity side of described master cylinder (20) keeps the pressure being more than or equal to rod chamber side.
5. the twin-tub pumping installations according to claim 3 or 4, it is characterized in that, described main pump and fuel tank are by the rod chamber hydraulic connecting of selector valve and described two master cylinders (20), the rodless cavity of described two master cylinders (20) is communicated with to form communicated cavity, or described main pump and fuel tank are by the rodless cavity hydraulic connecting of selector valve and described two master cylinders (20), and the rod chamber of described two master cylinders (20) is communicated with.
6. the twin-tub pumping installations according to claim 3 or 4, it is characterized in that, the master cylinder cylinder barrel (21) of described master cylinder (20) buffer mouth (27) before buffer mouth (26) and second before the side close to described conveying cylinder (10) is formed with first along the length direction of master cylinder (20), this before first buffer mouth (26) than this, buffer mouth (27) is closer to described conveying cylinder (10) before second, before described first, buffer mouth (26) is connected by front separator tube (28) with buffer mouth before second (27).
7. twin-tub pumping installations according to claim 6, is characterized in that, before described first before buffer mouth (26) and/or second buffer mouth (27) be along described master cylinder cylinder barrel (21) circumference arrange multiple.
8. twin-tub pumping installations according to claim 6, it is characterized in that, before described first, before buffer mouth (26) and/or second, the bore of buffer mouth (27) is equal with the bore of buffer mouth (24) after buffer mouth (23) after described first and/or second, and the caliber of described front separator tube (28) is equal with the caliber of described rear separator tube (25).
9. a concrete mixer, is characterized in that, this concrete mixer comprises the twin-tub pumping installations in the claims 1-8 described in any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310277148.5A CN103410724B (en) | 2013-07-03 | 2013-07-03 | A kind of twin-tub pumping installations and concrete mixer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310277148.5A CN103410724B (en) | 2013-07-03 | 2013-07-03 | A kind of twin-tub pumping installations and concrete mixer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103410724A CN103410724A (en) | 2013-11-27 |
| CN103410724B true CN103410724B (en) | 2015-08-12 |
Family
ID=49603757
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310277148.5A Active CN103410724B (en) | 2013-07-03 | 2013-07-03 | A kind of twin-tub pumping installations and concrete mixer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103410724B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103670995B (en) * | 2013-12-05 | 2017-01-11 | 中联重科股份有限公司 | Concrete pumping system and control device and method |
| CN111594406B (en) * | 2020-06-23 | 2021-02-19 | 胡小青 | Double-cylinder pumping device with stroke controlled for viscous material |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6299416B1 (en) * | 1998-10-10 | 2001-10-09 | Daewoo Heavy Industries Ltd. | Bulk material pump device |
| CN200958466Y (en) * | 2005-12-29 | 2007-10-10 | 长沙中联重工科技发展股份有限公司 | Concrete pump transferring mechanism |
| CN101793246A (en) * | 2010-03-16 | 2010-08-04 | 三一重工股份有限公司 | Concrete pumping structure and control method of concrete pumping structure |
| CN102330715A (en) * | 2011-07-14 | 2012-01-25 | 长沙中联重工科技发展股份有限公司 | Concrete pumping equipment, serial oil cylinder and stroke self-adaptive tail end compensation method thereof |
| CN102434422A (en) * | 2011-12-14 | 2012-05-02 | 中联重科股份有限公司 | Pumping device and lubricating method thereof |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0232871Y2 (en) * | 1984-11-16 | 1990-09-05 | ||
| JP2005098230A (en) * | 2003-09-25 | 2005-04-14 | Ishikawajima Constr Mach Co | Stroke correction device for double piston pump |
-
2013
- 2013-07-03 CN CN201310277148.5A patent/CN103410724B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6299416B1 (en) * | 1998-10-10 | 2001-10-09 | Daewoo Heavy Industries Ltd. | Bulk material pump device |
| CN200958466Y (en) * | 2005-12-29 | 2007-10-10 | 长沙中联重工科技发展股份有限公司 | Concrete pump transferring mechanism |
| CN101793246A (en) * | 2010-03-16 | 2010-08-04 | 三一重工股份有限公司 | Concrete pumping structure and control method of concrete pumping structure |
| CN102330715A (en) * | 2011-07-14 | 2012-01-25 | 长沙中联重工科技发展股份有限公司 | Concrete pumping equipment, serial oil cylinder and stroke self-adaptive tail end compensation method thereof |
| CN102434422A (en) * | 2011-12-14 | 2012-05-02 | 中联重科股份有限公司 | Pumping device and lubricating method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103410724A (en) | 2013-11-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102112273B (en) | Impact device having impact mechanism lubricating device | |
| CN103062006B (en) | A kind of Double-cylinder piston type mortar pump | |
| JP6126262B2 (en) | Internal combustion engine | |
| RU2415008C1 (en) | Impact device | |
| CN103410724B (en) | A kind of twin-tub pumping installations and concrete mixer | |
| US10036445B2 (en) | Impact energy absorbing device | |
| CN206571469U (en) | A kind of mechanic automatic direction change double well long distance oil suction machine | |
| CN112747239B (en) | Automatic lubricating system | |
| CN104847642B (en) | Control method and control device for concrete pumping | |
| CN105378349A (en) | Hydraulic drive device | |
| CN206290528U (en) | A kind of buffering hydraulic cylinder assembly | |
| CN102410278A (en) | Multistage single-action hydraulic cylinder and engineering machinery provided with same | |
| CN102022611A (en) | Novel lubricating pump and volume occupation grease discharging method for preventing plunger and cylinder body from being worn | |
| CN102734131A (en) | Full-automatic oil injection system of high-pressure compressor | |
| CN105715618A (en) | Retarder with hydraulic oil cylinders | |
| JP2013092211A (en) | Engaging device | |
| WO2012004953A3 (en) | Vehicular power transmitting system | |
| CN202926589U (en) | Split piston sealing body, split piston, piston cylinder and concrete pumping equipment | |
| BRPI0416682A (en) | refrigerant compressor for motor vehicles | |
| CN204253711U (en) | The pneumatic planker damped cylinder of lathe | |
| CN103967772B (en) | A kind of concrete pump and concrete piston lubricating system thereof | |
| CN203604193U (en) | Pumping machine | |
| CN204163979U (en) | Piston of conveying cylinder lubrication system and pump truck | |
| CN104235009B (en) | Piston of conveying cylinder lubricating system and pump truck | |
| CN1325824C (en) | Reciprocating hydraulic piston mechanism |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20201009 Address after: No.202 Xuanfu street, Xuanhua District, Zhangjiakou, Hebei Province Patentee after: Hebei Leisa Heavy Construction Machinery Co., Ltd Address before: 102206 Changping District City, Shahe, Sha Yang Road, Beijing Patentee before: BEIQI FOTON MOTOR Co.,Ltd. |
|
| TR01 | Transfer of patent right |