CN102434422B - Pumping device and lubricating method thereof - Google Patents

Pumping device and lubricating method thereof Download PDF

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Publication number
CN102434422B
CN102434422B CN201110418618.6A CN201110418618A CN102434422B CN 102434422 B CN102434422 B CN 102434422B CN 201110418618 A CN201110418618 A CN 201110418618A CN 102434422 B CN102434422 B CN 102434422B
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main pump
send
piston
cylinder
pumping
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CN102434422A (en
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裴杰
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Zoomlion Heavy Industry Science and Technology Co Ltd
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Zoomlion Heavy Industry Science and Technology Co Ltd
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Abstract

The invention discloses a pumping device and a lubricating method thereof. The pumping device comprises a main pumping hydro-cylinder, a main pumping piston assembly arranged in the main pumping hydro-cylinder, a material cylinder and a material piston assembly arranged in the material cylinder and connected with the main pumping piston assembly, wherein lubrication oil runners are arranged on the main pumping piston assembly and the material cylinder piston assembly, one ends of the lubrication oil runners are connected with the main pumping hydro-cylinder, the other ends of the lubrication oil runners are connected with the material cylinder, and the hydraulic oil in the main pumping hydro-cylinder is transmitted to the material cylinder along the lubrication oil runners under the action of pumping pressure. Through the manner, the hydraulic oil can be used for lubricating a material plunger. The invention has the characteristics of simple structure and lower cost. The invention also provides a lubricating method of the pumping device.

Description

A kind of pumping installations and lubricating method thereof
Technical field
The present invention relates to a kind of pumping installations, particularly relate to a kind of pumping installations and lubricating method thereof.
Background technique
Pumping installations (such as, the concrete pump set) is a kind of device of extensive use in engineering machinery, for the material such as pump concrete, mud.At present in the pumping procedure of material, in order to ensure the lubrication between each parts, particularly in order to ensure the lubrication between material cylinder and material piston, need to apply lubricant oil between material cylinder and material piston.The lubricating system of tradition pumping installations arranges oil storage chamber on the connecting rod of material piston, spring and piston is provided with in oil storage chamber, utilize the elastic force of spring to promote piston, and then the lubricant oil in oil storage chamber is pushed material cylinder, and then material cylinder and material piston are lubricated.But, in this scheme, need to arrange spring and piston in addition in oil storage chamber, and need regularly make-up oil in oil storage chamber, therefore there is complex structure, manufacture cost and the high shortcoming of maintenance cost.In addition, because the pressure of lubricant oil is produced by the elastic force of spring and the inertial force of piston, pressure is relatively low, extrudes under the effect of the material pressure of lubricant oil easily in material cylinder therefore during lubrication in material piston lip, not easily form oil film, lubrication effect is not good.
Summary of the invention
The technical problem that the present invention mainly solves is to provide a kind of pumping installations and lubricating method thereof, to reduce structure complexity and cost.
For solving the problems of the technologies described above, the technological scheme that the present invention adopts is: provide a kind of pumping installations, this pumping installations is used for pump concrete, comprise main pump and send oil cylinder, being arranged at main pump send in-oil cylinder main pump to send piston assembly, material cylinder and being arranged in material cylinder and the material piston assembly sending piston assembly to be connected with main pump, wherein main pump send on piston assembly and material piston assembly and is provided with lubricant oil runner, one end of lubricant oil runner connects main pump and send oil cylinder, the other end connects material cylinder, in-oil cylinder hydraulic oil is sent to be sent under the effect of pumping pressure in material cylinder to allow main pump, main pump send piston assembly to comprise main pump and send piston rod and be arranged on main pump and send main pumping piston on piston rod, lubricant oil runner send the central axis of piston rod to arrange along main pump, and one end of lubricant oil runner is arranged at main pump send the end of piston rod and connect rodless cavity or the rod chamber that main pump send oil cylinder, material piston assembly comprises material piston seat, main pump send piston assembly to comprise the connection part sending piston rod and material piston seat for connecting main pump further, connection part comprises the second link being fixed on main pump and sending the first link on piston rod and be fixed on material piston seat, and the first link and the second link interfix, lubricant oil runner is provided with one-way valve, and one-way valve is arranged on the first link, to limit the one-way transmission of hydraulic oil to material cylinder.
Wherein, material piston assembly comprises further and is disposed on the first Sealing on material piston seat and the second Sealing, with at material cylinder, material piston seat, form a lubrication closed containing cavity between the first Sealing and the second Sealing, the other end of lubricant oil runner connects lubrication closed containing cavity.
Wherein, under high pressure pumping mode, one end and the main pump of lubricant oil runner send the rodless cavity of oil cylinder to be connected.
The present invention also provides a kind of lubricating method of pumping installations, comprise: send in-oil cylinder main pump to send piston assembly and to be arranged in material cylinder and the material piston assembly sending piston assembly to be connected with main pump arranges lubricant oil runner being arranged at main pump, wherein main pump send piston assembly to comprise main pump to send piston rod and be arranged on main pump and send main pumping piston on piston rod, lubricant oil runner send the central axis of piston rod to arrange along main pump, and one end of lubricant oil runner is arranged at main pump send the end of piston rod and connect rodless cavity or the rod chamber that main pump send oil cylinder, material piston assembly comprises material piston seat and send the connection part of piston rod and material piston seat for connecting main pump, connection part comprises the second link being fixed on main pump and sending the first link on piston rod and be fixed on material piston seat, and the first link and the second link interfix, lubricant oil runner arranges one-way valve, and one-way valve is arranged on the first link, to limit the one-way transmission of hydraulic oil to material cylinder, send in oil cylinder at main pump and produce pumping pressure, send in-oil cylinder hydraulic oil to be sent in material cylinder through lubricant oil runner under the effect of pumping pressure to allow main pump.
Wherein, this lubricating method comprises: lubrication closed containing cavity hydraulic oil being sent to the material piston seat of material piston assembly, the first Sealing and being formed between the second Sealing and material cylinder.
The invention has the beneficial effects as follows: the lubricating system being different from the pumping installations of prior art, the present invention utilizes main pump to send the pumping pressure of oil cylinder as power source, hydraulic oil is sent in material cylinder through lubricant oil runner as lubricant oil, and then material piston is lubricated.The present invention has the simple and lower-cost feature of structure.
Accompanying drawing explanation
Fig. 1 is the structural representation of pumping installations of the present invention;
Fig. 2 is the flow chart of the lubricating method of pumping installations of the present invention.
Embodiment
Below in conjunction with drawings and Examples, the present invention is described in detail.
Refer to Fig. 1, the invention provides a kind of pumping installations, comprise main pump to send oil cylinder 1, be arranged at main pump and send the main pump in oil cylinder 1 to send piston assembly, material cylinder 2 and to be arranged in material cylinder 2 and the material piston assembly sending piston assembly to be connected with main pump, main pump send on piston assembly and material piston assembly and is provided with lubricant oil runner 3, one end of lubricant oil runner 3 connects main pump and send oil cylinder 1, the other end connects material cylinder 2, send the hydraulic oil in oil cylinder 1 to be sent in material cylinder 2 under the effect of pumping pressure to allow main pump.
Specifically, in the present embodiment, material piston assembly comprises material piston seat 4 and is disposed on the first Sealing 5 and the second Sealing 6 on material piston seat 4, so material cylinder 2, between material piston seat 4, first Sealing 5 and the second Sealing 6 formed one lubrication closed containing cavity 7.Wherein, the second Sealing 6 is the material piston lip of material piston assembly.
Main pump send piston assembly to comprise main pump and send piston rod 8 and be arranged on main pump and send main pumping piston 9 on piston rod 8, material piston assembly to comprise further to send the connection part of piston rod 8 with material piston seat 4 for connecting main pump.Connection part comprises the second link 11 being fixed on main pump and sending the first link 10 on piston rod 8 and be fixed on material piston seat 4, and the first link 10 and the second link 11 interfix.
In the present embodiment, lubricant oil runner 3 send the central axis of piston rod 8 to arrange along main pump, and one end of lubricant oil runner 3 is arranged at main pump send the end of piston rod 8 and connect the rodless cavity 13 that main pump send oil cylinder 1.The other end of lubricant oil runner 3 then connects lubrication closed containing cavity 7.In other embodiments, one end of lubricant oil runner 3 can be arranged at other appropriate locations that main pump send piston rod 8, and can connect the rod chamber 14 that main pump send oil cylinder 1.The other end of lubricant oil runner 3 can be arranged at other appropriate locations of material piston assembly.
Further, in the present embodiment, lubricant oil runner 3 is provided with one-way valve 12, to limit the one-way transmission of hydraulic oil to material cylinder 2.
As shown in Figure 1, during pumping installations of the present invention work, main pump send in oil cylinder 1 has certain pumping pressure, this pressure and load proportional.Now, pumping installations of the present invention utilizes main pump to send pumping pressure in oil cylinder 1 as power source, and utilize main pump to send hydraulic oil in oil cylinder 1 as lubricant oil, main pump is made to send the hydraulic oil in oil cylinder 1 to enter lubrication and seal cavity volume 7 through lubricant oil runner 3 under the effect of pumping pressure, and then material piston lip (that is, the second Sealing 6) is lubricated.
Existing pumping installations (such as, the concrete pump set) generally arranges two or more main pump and send oil cylinder 1, and its pumping mode is generally divided into high pressure pumping and low pressure pumping.Under low pressure pumping mode, two main pumps send the rodless cavity 13 of oil cylinder 1 to be connected, and from rod chamber 14 input and output hydraulic oil.Entering from rod chamber 14 due to hydraulic oil and promote main pumping piston 9, therefore active area is less, and the delivery pressure of pumping installations is also less, but speed.Under high pressure pumping mode, two main pumps send the rod chamber 14 of oil cylinder 1 to be connected, and from rodless cavity 13 input and output hydraulic oil.Entering from rodless cavity 13 due to hydraulic oil and promote main pumping piston 9, therefore active area is comparatively large, and the delivery pressure of pumping installations is also comparatively large, but speed is slower.
No matter work under high pressure pumping mode or work under low pressure pumping mode, also no matter one end of lubricant oil runner 3 is connected with rodless cavity 13 or is connected with rod chamber 14, the equal main pump that can utilize send the pumping pressure of oil cylinder 1 as power source, hydraulic oil is sent in material cylinder 2 through lubricant oil runner 3 as lubricant oil, and then material piston is lubricated.Under low pressure pumping mode, in the inherent pusher of rodless cavity 13 or suction process, all there is pumping pressure, there is pumping pressure in rod chamber 14 in suction process.Therefore, under low pressure pumping mode, if one end of lubricant oil runner 3 is connected with rodless cavity 13, then no matter in pusher or suction process, hydraulic oil all can be sent to material cylinder 2 and then realize omnidistance lubrication.If one end of lubricant oil runner 3 is connected with rod chamber 14, then lubricate at suction process implementation.
In like manner, under high pressure pumping mode, in the inherent pusher of rod chamber 14 and suction process, all there is pumping pressure, there is pumping pressure in rodless cavity 13 in pusher process.Therefore, under high pressure pumping mode, if one end of lubricant oil runner 3 is connected with rod chamber 14, then no matter in pusher or suction process, hydraulic oil all can be sent to material cylinder 2 and then realize omnidistance lubrication.If one end of lubricant oil runner 3 is connected with rodless cavity 13, then lubricate at pusher process implementation.
In addition, main pump send the pumping pressure of oil cylinder 1 to make hydraulic oil keep static pressure (i.e. pumping pressure) in lubrication closed containing cavity 7, hydraulic pressure oil film is formed at material piston lip place, when ensure that material piston material pushing, the hydraulic oil entered from material piston lip can not be subject to the extruding of material and overflow, thus more effective to the lubrication of material piston.Further, under high pressure pumping mode, if one end of lubricant oil runner 3 is connected with rodless cavity 13, then when pusher, hydraulic oil enters rodless cavity 13, and now the material pressure that is subject to of the comparatively large and material piston lip of pumping pressure is comparatively large, more easily forms hydraulic pressure oil film.When suction, due to the back pressure that exists in rodless cavity 13 and the material pressure that is subject to of material piston lip is less, be also easy to form hydraulic pressure oil film.But, because main pumping piston 9 is different from the area ratio of material piston lip, the consumption that possible hydraulic oil is too much because overpressure produces, therefore this scheme is comparatively applicable to high pressure pumping installations.Therefore, when the better oil film effect of needs, preferably under high pressure pumping mode, one end of lubricant oil runner 3 is connected with rodless cavity 13.
Meanwhile, owing to being provided with one-way valve 12 on lubricant oil runner 3, prevent the materials such as concrete grout stream to enter lubricant oil runner 3, thus the fluid avoiding hydraulic system is polluted.
Present invention also offers a kind of lubricating method of pumping installations, the method use above-mentioned pumping installations.Referring to Fig. 2, is the flow chart of lubricating method one embodiment of pumping installations of the present invention.As shown in Figure 2, the lubricating method of the pumping installations of the embodiment of the present invention comprises the steps.
In step sl, send in-oil cylinder main pump to send piston assembly and to be arranged in material cylinder and the material piston assembly sending piston assembly to be connected with main pump arranges lubricant oil runner being arranged at main pump.
In step s 2, send in oil cylinder at main pump and produce pumping pressure, send in-oil cylinder hydraulic oil to be sent in material cylinder through lubricant oil runner under the effect of pumping pressure to allow main pump.
In step sl, preferably further one-way valve is set on lubricant oil runner, to limit the one-way transmission of hydraulic oil to material cylinder.
In step s 2, the lubrication closed containing cavity preferably hydraulic oil being sent to the material piston seat of material piston assembly, the first Sealing and being formed between the second Sealing and material cylinder.
Compared with the pumping installations of prior art, the present invention utilizes main pump to send the pumping pressure of oil cylinder as power source, is sent in material cylinder by hydraulic oil, and then lubricates material piston as lubricant oil through lubricant oil runner.The present invention has the advantages that structure is simple, cost is lower, lubrication effect is good.Further, the hydraulic oil with pumping pressure is entered lubrication closed containing cavity through lubricant oil runner, make hydraulic oil can keep certain static pressure in lubrication closed containing cavity, at material piston lip, place easily forms hydraulic pressure oil film, is not easily extruded, and lubrication effect is good.
The foregoing is only embodiments of the invention; not thereby the scope of the claims of the present invention is limited; every utilize specification of the present invention and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.

Claims (5)

1. a pumping installations, it is characterized in that, described pumping installations is used for pump concrete, comprise main pump and send oil cylinder, being arranged at described main pump send in-oil cylinder main pump to send piston assembly, material cylinder and being arranged in described material cylinder and the material piston assembly sending piston assembly to be connected with described main pump, wherein said main pump send on piston assembly and described material piston assembly and is provided with lubricant oil runner, one end of described lubricant oil runner connects described main pump and send oil cylinder, the other end connects described material cylinder, in-oil cylinder hydraulic oil is sent to be sent in described material cylinder under the effect of pumping pressure to allow described main pump, described main pump send piston assembly to comprise main pump and send piston rod and be arranged on described main pump and send main pumping piston on piston rod, described lubricant oil runner send the central axis of piston rod to arrange along described main pump, and described one end of described lubricant oil runner is arranged at described main pump send the end of piston rod and connect rodless cavity or the rod chamber that described main pump send oil cylinder, described material piston assembly comprises material piston seat, described main pump send piston assembly to comprise the connection part sending piston rod and described material piston seat for connecting described main pump further, described connection part comprises the second link being fixed on described main pump and sending the first link on piston rod and be fixed on described material piston seat, and described first link and described second link interfix, described lubricant oil runner is provided with one-way valve, and described one-way valve is arranged on described first link, to limit the one-way transmission of described hydraulic oil to described material cylinder.
2. pumping installations according to claim 1, it is characterized in that, described material piston assembly comprises further and is disposed on the first Sealing on described material piston seat and the second Sealing, with described material cylinder, described material piston seat, between described first Sealing and described second Sealing formed one lubrication closed containing cavity, the described the other end of described lubricant oil runner connects described lubrication closed containing cavity.
3. pumping installations according to claim 1, is characterized in that, under high pressure pumping mode, one end and the described main pump of described lubricant oil runner send the rodless cavity of oil cylinder to be connected.
4. a lubricating method for pumping installations, is characterized in that, described lubricating method comprises:
Send in-oil cylinder main pump to send piston assembly and to be arranged in material cylinder and the material piston assembly sending piston assembly to be connected with described main pump arranges lubricant oil runner being arranged at main pump, wherein said main pump send piston assembly to comprise main pump and send piston rod and be arranged on described main pump and send main pumping piston on piston rod, described lubricant oil runner send the central axis of piston rod to arrange along described main pump, and one end of described lubricant oil runner is arranged at described main pump send the end of piston rod and connect rodless cavity or the rod chamber that described main pump send oil cylinder, described material piston assembly comprises material piston seat and send the connection part of piston rod and described material piston seat for connecting described main pump, described connection part comprises the second link being fixed on described main pump and sending the first link on piston rod and be fixed on described material piston seat, and described first link and described second link interfix, described lubricant oil runner arranges one-way valve, and described one-way valve is arranged on described first link, to limit the one-way transmission of hydraulic oil to described material cylinder,
Send in oil cylinder at described main pump and produce pumping pressure, send in-oil cylinder hydraulic oil to be sent in described material cylinder through described lubricant oil runner under the effect of described pumping pressure to allow described main pump.
5. lubricating method according to claim 4, it is characterized in that, described lubricating method comprises: described hydraulic oil is sent to the lubrication closed containing cavity formed between the material piston seat of described material piston assembly, the first Sealing and the second Sealing and described material cylinder.
CN201110418618.6A 2011-12-14 2011-12-14 Pumping device and lubricating method thereof Active CN102434422B (en)

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Application Number Priority Date Filing Date Title
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CN102434422B true CN102434422B (en) 2015-05-13

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Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103321892B (en) * 2013-05-29 2016-06-22 三一汽车制造有限公司 A kind of elastic piston, pumping system and engineering machinery
CN103410724B (en) * 2013-07-03 2015-08-12 北汽福田汽车股份有限公司 A kind of twin-tub pumping installations and concrete mixer
CN104265622B (en) * 2014-09-28 2016-08-17 山推楚天工程机械有限公司 A kind of lubricating system in concrete pump electric-controlled type concrete piston

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60195363A (en) * 1984-03-16 1985-10-03 Matsushita Electric Ind Co Ltd Lubrication device in thermodynamical reciprocating engine
CN1032060A (en) * 1988-07-03 1989-03-29 付连起 Multipurpose fluid drive piston pump
JP2006250173A (en) * 2005-03-08 2006-09-21 Kowa Kk Lubricant supply pump
CN201049524Y (en) * 2007-03-22 2008-04-23 江苏扬力集团有限公司 Pressing machine balance cylinder oil return structure
JP2009097680A (en) * 2007-10-19 2009-05-07 Kayaba Ind Co Ltd Pneumatic shock absorber
CN202402239U (en) * 2011-12-14 2012-08-29 中联重科股份有限公司 Pumping device

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60195363A (en) * 1984-03-16 1985-10-03 Matsushita Electric Ind Co Ltd Lubrication device in thermodynamical reciprocating engine
CN1032060A (en) * 1988-07-03 1989-03-29 付连起 Multipurpose fluid drive piston pump
JP2006250173A (en) * 2005-03-08 2006-09-21 Kowa Kk Lubricant supply pump
CN201049524Y (en) * 2007-03-22 2008-04-23 江苏扬力集团有限公司 Pressing machine balance cylinder oil return structure
JP2009097680A (en) * 2007-10-19 2009-05-07 Kayaba Ind Co Ltd Pneumatic shock absorber
CN202402239U (en) * 2011-12-14 2012-08-29 中联重科股份有限公司 Pumping device

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