CN201874809U - Concrete pump truck and concrete piston lubricating system - Google Patents
Concrete pump truck and concrete piston lubricating system Download PDFInfo
- Publication number
- CN201874809U CN201874809U CN2010206364812U CN201020636481U CN201874809U CN 201874809 U CN201874809 U CN 201874809U CN 2010206364812 U CN2010206364812 U CN 2010206364812U CN 201020636481 U CN201020636481 U CN 201020636481U CN 201874809 U CN201874809 U CN 201874809U
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- concrete piston
- oil
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- lubricating
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Abstract
The utility model discloses a concrete piston lubricating system, which is used for lubricating concrete pistons in a left conveying cylinder and a right conveying cylinder. The two concrete pistons are respectively driven by two pumping cylinders to shift in a crossing manner, an outlet of an oil injection hole on each concrete piston is arranged on the outer peripheral surface of the concrete piston, two hose reels are respectively disposed corresponding to the two concrete pistons, an oil guide hole communicated with an oil source is arranged on a reel body of each hose reel, a hose is wound each reel body, inner fixed ends of the hoses are respectively communicated with the outlets of the oil guide holes, the outer extending ends of the hoses are respectively communicated with inlets of the oil injection holes on the concrete pistons and extend or retract along with shifting of the corresponding concrete piston. By automatically injecting lubricating grease to the matching positions of the concrete pistons with the conveying cylinders, operating efficiency is increased greatly while fine lubricating effect of the concrete pistons and the conveying cylinders is ensured, and on such basis, the utility model further provides a concrete pump truck with the lubricating system.
Description
Technical field
The utility model relates to a kind of concrete conveying equipment, is specifically related to a kind of concrete mixer and concrete piston lubricating system thereof.
Background technique
Concrete mixer can be finished the function of the conveying and the cloth operation of on-site concrete simultaneously.At present,, characteristics such as cloth scope big, voluntarily walking, maneuverability and convenient transfer good based on pump-conveying property that himself possessed, concrete mixer has obtained using widely in engineerings such as water conservancy, water power, subway, bridge, large foundation and tall building.
In the prior art, the fundamental function of concrete pump truck pumping system is that the concrete that will stir pumps into delivery pipe, and by delivery pipe with transmission and concrete transmission to position to be built.Pumping system mainly carries cylinder, S swing pipe, hopper and delivery pipe to constitute by left and right two; Carry concrete piston in the cylinder respectively under the driving of two pumped liquid cylinder pressures, do rightabout each other to-and-fro motion for two; Then respectively under the driving of two plunger piston fluid pressure cylinders, the S swing pipe swinging the commutation motion.In the working procedure, carrying cylinder and hopper when the left side communicates, the right side carries cylinder to communicate by S swing pipe and delivery pipe, under this state, concrete piston advances forward in the cylinder is carried in the left side, the concrete in the hopper is sucked the corresponding cylinder of carrying, meanwhile, the right side carries the interior concrete piston of cylinder to move backward, carries the concrete in the cylinder to push in the delivery pipe by the S swing pipe on the right side.When the stroke end is arrived in the concrete piston motion, two carry the concrete piston motion commutation in the cylinder, and the S swing pipe commutates simultaneously, then the right side carries cylinder and hopper to communicate, the left side carries cylinder to communicate by S swing pipe and delivery pipe, under this state, concrete piston advances forward in the cylinder is carried on the right side, concrete in the hopper is sucked the right side to be carried in the cylinder, meanwhile, the left side carries that the concrete piston moves backward in the cylinder, carries the concrete in the cylinder to push in the delivery pipe by the S swing pipe in the left side, and two concrete pistons and S swing pipe commutate once more to the stroke end.Like this, carry cylinders constantly to do rightabout to-and-fro motion by turns for two, and cooperate the commutation of S swing pipe valve, thereby from hopper, suck concrete serially, and continuously the concrete that sucks is pumped in the delivery pipe, realize the function of pump concrete.
As everyone knows, concrete conveying is to realize by pushing again and again of pumping oil cylinder, each sliding friction between concrete piston head and the conveying cylinder is generated heat the worn piston head and is carried cylinder, and the lubricant grease of therefore need annotating is to being lubricated between concrete piston and the cylinder body.The lubricating system of tradition concrete piston adopts fixedly lubricating point, yet this mode provides lubricant grease for quantitative, level pressure, can't provide lubricated reliably for the concrete piston head, if the dry friction situation occurs between the two, will reduce concrete piston and piston of conveying cylinder head working life greatly; Simultaneously, fricative big calorimetric will reduce the sealing effect of seal ring, or even cause the spillage phenomenon.
Based on this, publication number is that the Chinese patent literature of CN2485452 discloses a kind of concrete pump conveying cylinder lubricating fitting, and specifically disclose: in the connecting rod of concrete piston, have an inner chamber, and the oil transportation piston of installing in the inner chamber supports by spring, has oil outlet and a pit on this concrete piston; During shutdown, lubricant grease is added in the above-mentioned inner chamber.Like this, lubricant grease arrives oil outlet by pit under the inertial force effect of spring force and piston, carry between cylinder and the concrete piston surface of contact thereby enter, and reaches good sealing effect.But, being subjected to the restriction of himself structure, this scheme exists that following some is not enough:
One; the adding of lubricant grease can only add under outage state by hand, because two of concrete mixer carry cylinders to be in different working positions, so after need in a concrete piston, filling it up with lubricant grease; start is carried out steering operation, the lubricant grease of annotating then in another concrete piston.Obviously, aforesaid operations process more complicated, the time of filling lubricant grease is longer, influences working efficiency.
Its two because the volume of inner chamber is limited,, often needs to interrupt proper functioning and replenish the filling lubricant grease in the more operating mode of pump concrete side's amount.In addition, because the uncertainty in filling lubricant grease cycle, existing lubricant grease to exhaust influences the problem of lubrication effect.
In view of this, demand urgently being optimized design, to overcome above-mentioned defective at existing concrete pump transporting system lubrication technology.
The model utility content
At above-mentioned defective, the technical problem that the utility model solves is, a kind of concrete piston lubricating system that is used for concrete mixer is provided, with the cooperation place of automatic injection lubricant grease to concrete piston and conveying cylinder, guaranteeing to have improved working efficiency greatly on the basis of good lubrication effect between the two.On this basis, the utility model also provides a kind of concrete mixer with this lubrication system.
The concrete piston lubricating system that the utility model provides is used for the lubricated of the interior concrete piston of left and right conveying cylinder, two described concrete pistons staggered displacements under the driving of two pumping oil cylinders respectively; And the outlet of oil hole is arranged on the outer surface of concrete piston on each described concrete piston; Described concrete piston lubricating system comprises oil sources and two hose reels that fixedly install of delivery pressure lubricant grease, wherein, two hose reels respectively with two corresponding settings of described concrete piston; And the spool body of described hose reel is provided with the oil guiding hole that is communicated with described oil sources, and flexible pipe is wrapped on the spool body, and the inboard fixed end of described flexible pipe is communicated with the outlet of described oil guiding hole respectively; The outside external part of each described flexible pipe is communicated with the import of oil hole on the described concrete piston respectively, and stretches out along with the displacement of corresponding described concrete piston or regain.
Preferably, also comprise position control valve, be arranged on the oil circuit between the oil guiding hole of described oil sources and two described spool body that the conducting of one of described oil sources and two described oil guiding holes is controlled in the commutation of described position control valve.
Preferably, described position control valve is specially the 3-position-3-way hydraulic control valve, three actuator ports of described 3-position-3-way hydraulic control valve are communicated with described oil sources and two described oil guiding holes respectively, and two control ports of described 3-position-3-way hydraulic control valve are communicated with the rodless cavity of two pumping oil cylinders respectively, to control its spool commutation.
Preferably, also comprise two guiding devices, be separately positioned between two described spool body and the corresponding described concrete piston; And two described flexible pipes place respectively on the corresponding guiding device.
Preferably, described guiding device is specially leading block, and described hose clip is loaded in the race of corresponding leading block.
Preferably, the pump that described oil sources comprises the fuel tank that holds lubricant grease and pump is got lubricant grease in described fuel tank.
Preferably, the liquid outlet of described pump is provided with filter.
Preferably, the import of described oil guiding hole is arranged on the end face of described spool body one side.
Preferably, the import of described oil hole is arranged on the end face of described concrete piston rear side.
The concrete mixer that the utility model provides comprises by left and right two conveying cylinders, S swing pipe, hopper and delivery pipes and be afraid of pumping system, and described left and right conveying cylinder all is built-in with the concrete piston; Also comprise foregoing concrete piston lubricating system.
Compared with prior art, the concrete piston lubricating system that the utility model provides can provide lubricant grease automatically, to guarantee annotate continuously cooperation position between concrete piston and corresponding conveying cylinder of lubricant grease.In this scheme, can provide the oil sources of pressure lubrication grease and the oil circuit between the concrete piston to be provided with hose reel continuously, the flexible pipe of oil sources through being wound on the spool body is delivered to the concrete piston, and the outside external part of flexible pipe stretches out along with the displacement of concrete piston or regains.That is to say, stretching out or regain along with the concrete piston, the length-adjustable of the oil sources and the connecting pipeline between the concrete piston of lubricant grease is provided, like this, in the process that the concrete piston slides with respect to the conveying cylinder, this lubrication system can provide necessary lubricant grease in real time, can effectively evade the situation that dry friction occurs on the one hand, improve lubrication effect greatly, improved concrete piston and the working life of carrying cylinder; On the other hand, the concrete piston lubricating system that the utility model provides need not to interrupt pumpdown, thereby can effectively improve the complete machine working efficiency.
In the preferred version of the present utility model, on the oil circuit between the oil guiding hole of oil sources and two spool body, have additional position control valve, to control the conducting of one of described oil sources and two oil guiding holes by the commutation of position control valve, with the reasonable distribution lubricant grease; Have characteristics rational in infrastructure, good operability.
In another preferred version of the present utility model, this position control valve is specially the 3-position-3-way hydraulic control valve, and two control ports of 3-position-3-way hydraulic control valve are communicated with the rodless cavity of two pumping oil cylinders respectively, to control its spool commutation, thereby make corresponding concrete piston in being fed forward concrete stroke, obtain lubricant grease, further the lubricant grease that provided of reasonable distribution oil sources.
Description of drawings
Fig. 1 shows the side schematic view of the system of concrete piston lubricating described in embodiment assembly relation;
Fig. 2 is that the A of Fig. 1 is to view;
Fig. 3 is the overall structure schematic representation of the piston of concrete described in the embodiment;
Fig. 4 is the overall structure schematic representation of concrete mixer described in the embodiment.
Among the figure:
Embodiment
Core of the present utility model provides a kind of concrete piston lubricating system that is used for concrete mixer, to concrete piston and the cooperation place of carrying cylinder, is guaranteeing to have improved working efficiency greatly on the basis of good lubrication effect between the two with automatic injection lubricant grease.Specify present embodiment below in conjunction with Figure of description.
See also Fig. 1 and Fig. 2, wherein, Fig. 1 shows the side schematic view of the described concrete piston lubricating of present embodiment system assembly relation, and Fig. 2 is that the A of Fig. 1 is to view.Be clear expression the application's inventive point place, only show the partial view of left and right conveying cylinder among Fig. 1 and Fig. 2.
As shown in Figure 1, this concrete piston lubricating system is used for the lubricated of the interior concrete piston 10 of left and right conveying cylinder, and is identical with the existing concrete conveying principle, two concrete pistons 10 staggered displacements under the driving of two pumping oil cylinder (not shown)s respectively, that is to say, do rightabout each other to-and-fro motion; Wherein, the outlet B of oil hole 11 is arranged on the outer surface of concrete piston 10 on each concrete piston 10, lubricant grease is delivered to the fitting surface between concrete piston 10 and the corresponding conveying cylinder, provides safeguard for realizing reliable pumping.Please, the figure shows the overall structure schematic representation of concrete piston in the lump referring to Fig. 3.
In conjunction with shown in Figure 3, the import A of oil hole 11 is arranged on the end face of concrete piston 10 rear sides.The forward and backward noun of locality that waits that this paper is mentioned is that direction of displacement with concrete piston 10 delivering concretes is the benchmark definition, should be appreciated that the use of the above-mentioned noun of locality should limit the scope that the application asks for protection.
Need in addition clearly, the to-and-fro motion operating process of concrete piston 10 is same as the prior art, and this paper repeats no more.Hereinafter will elaborate and carry the lubrication system part of lubricant grease to concrete piston 10 oil holes.
The oil sources of this concrete piston lubricating system is made of transparent fuel tank 20 that holds lubricant grease and pump is got lubricant grease in fuel tank 20 pump 30; Under the working state, the system pressure oil circuit of delivery pressure lubricant grease.This fuel tank 20 is not limited to and adopts transparent material to make, and should be appreciated that employing transparent fuel tank 20 is convenient to the operator or the attendant checks Fuel Oil Remaining, in time to replenish, is beneficial to and realizes lubricating reliably.
In this programme, adjustable with the tubing length that the import of concrete piston 10 oil holes 11 is communicated with, to adapt to the axially reciprocating of concrete piston 10.Particularly, be provided with a hose reel 40 accordingly with each concrete piston 10, two hose reels 40 are fixedly installed on the vehicle frame (or chassis) of carrying the cylinder rear side, its spool body 41 is provided with the oil guiding hole (not shown) that is communicated with oil sources, the flexible pipe 42 inboard fixed ends that winding is arranged on the spool body 41 are communicated with the outlet of this oil guiding hole, the import of this oil guiding hole is used for being communicated with oil sources, simultaneously, the outside external part of each flexible pipe 42 is communicated with the import of oil hole on the corresponding concrete piston 10 respectively.So be provided with, along with the displacement of corresponding concrete piston, spool body 41 is done adaptive rotation, makes the external part of each flexible pipe 42 correspondingly to stretch out or to regain, thereby guarantees that the tubing length that is communicated with concrete piston 10 is adjustable.
Because the oil guiding hole on the spool body 41 rotates in real time, and the pipeline relative fixed of connection oil guiding hole and pump 30 oil outlets, the import of this oil guiding hole can be arranged on the end face of spool body 41 1 sides for this reason, and on these side women's head-ornaments of spool body 41, the swivel coupling (not shown) is set, between two relative rotary members, to set up the internal communication relation.Certainly, this swivel coupling and prior art are identical, and those skilled in the art can realize fully that based on prior art this paper repeats no more.
In the process that the concrete piston slides with respect to the conveying cylinder, the setting of hose reel can guarantee to provide in real time the lubricant grease of necessity, thereby effectively evades the situation that dry friction occurs, has improved lubrication effect greatly, has improved concrete piston and the working life of carrying cylinder; In addition, because the oil sources relative fixed is provided with, the operation of supplemental lubrication grease need not to interrupt pumpdown, thereby can effectively improve the complete machine working efficiency.
As shown in the figure, also be provided with position control valve 50 on the oil circuit between the oil guiding hole of pump 30 and two spool body 41, it commutates with the conducting of one of control oil sources and two oil guiding holes, thereby adapts to the alternating motion of corresponding concrete piston, reasonable distribution lubricant grease.Further, these position control valve 50 preferred 3-position-3-way hydraulic control valve, an actuator port of this 3-position-3-way hydraulic control valve by pipeline 51 be communicated with pump 30 output oil ports (oil sources), its two other actuator port passes through pipeline 52 respectively and is communicated with oil guiding hole on two spool body 41; Simultaneously, two control ports of this 3-position-3-way hydraulic control valve are communicated with the rodless cavity of two pumping oil cylinders by pipeline 53 respectively, to control its spool commutation.That is to say that the commutation pilot pressure fluid of this position control valve 50 is taken from corresponding pumping oil cylinder rodless cavity, lubricant grease synchronized movement with the concrete piston is provided, that is, distribute lubrication oil fat is to the cooperation position between concrete piston that stretches out and the output cylinder.Have characteristics rational in infrastructure, good operability.
For this reason, be provided with guiding device 60 between each spool body 41 and corresponding concrete piston 10, this guiding device 60 can be arranged on the vehicle frame; And two flexible pipes 42 place respectively on the corresponding guiding device 60.Be appreciated that being used to carry the guiding device 60 that guides corresponding flexible pipe can adopt multiple structural type to realize, uses needs all in the scope that the application asks for protection as long as satisfy.
As shown in the figure, this guiding device 60 is specially leading block, and flexible pipe 42 is installed in the race of corresponding leading block 60, to prevent flexible pipe 42 lateral shift in the process of stretching out or regaining; In addition, as shown in Figure 2, above pulley, be provided with retaining pipe cross bar 61, jump out in the race of pulley 60 to avoid flexible pipe 42, thereby, further improved the effect of positioning and guiding satisfying on the basis of bearing function.
In addition, be provided with filter 70, thereby make the lubricant grease free from admixture that enters the lubrication system oil circuit, guarantee the good lubrication between concrete piston 10 and the conveying cylinder at the liquid outlet of pump 30.Obviously, even sneak into impurity in the fuel tank improperly, can not influence the normal operation of system yet.
Remove aforementioned concrete piston lubricating system, present embodiment also provides a kind of concrete mixer, sees also Fig. 4, and this figure is the overall structure schematic representation of concrete mixer.
This concrete mixer comprises by left and right two carries cylinder, S swing pipe, hopper and delivery pipe to be afraid of pumping system; And left and right conveying cylinder all is built-in with the concrete piston, under the driving of two pumped liquid cylinder pressures, makes rightabout each other to-and-fro motion Alternating Transportation concrete respectively; Also comprise foregoing concrete piston lubricating system.Certainly, the oil sources of concrete piston lubricating system can independently be provided with, also can with the shared oil sources of hopper lubrication system, as long as satisfy to use needs all can.
Functional parts such as the chassis of this concrete mixer, flexible rod assembly, power system, control system are same as the prior art, and this paper repeats no more.
The above only is a preferred implementation of the present utility model; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (10)
1. the concrete piston lubricating system is used for the lubricated of the interior concrete piston of left and right conveying cylinder, two described concrete pistons staggered displacements under the driving of two pumping oil cylinders respectively; And the outlet of oil hole is arranged on the outer surface of concrete piston on each described concrete piston, it is characterized in that, described concrete piston lubricating system comprises:
The oil sources of delivery pressure lubricant grease; With
Two hose reels that fixedly install are respectively with two corresponding settings of described concrete piston; And the spool body of described hose reel is provided with the oil guiding hole that is communicated with described oil sources, and flexible pipe is wrapped on the spool body, and the inboard fixed end of described flexible pipe is communicated with the outlet of described oil guiding hole respectively;
The outside external part of each described flexible pipe is communicated with the import of oil hole on the described concrete piston respectively, and stretches out along with the displacement of corresponding described concrete piston or regain.
2. concrete piston lubricating according to claim 1 system is characterized in that, also comprises:
Position control valve is arranged on the oil circuit between the oil guiding hole of described oil sources and two described spool body, and the conducting of one of described oil sources and two described oil guiding holes is controlled in the commutation of described position control valve.
3. concrete piston lubricating according to claim 2 system, it is characterized in that, described position control valve is specially the 3-position-3-way hydraulic control valve, three actuator ports of described 3-position-3-way hydraulic control valve are communicated with described oil sources and two described oil guiding holes respectively, and two control ports of described 3-position-3-way hydraulic control valve are communicated with the rodless cavity of two pumping oil cylinders respectively, to control its spool commutation.
4. according to each described concrete piston lubricating system in the claim 1 to 3, it is characterized in that, also comprise:
Two guiding devices are separately positioned between two described spool body and the corresponding described concrete piston; And two described flexible pipes place respectively on the corresponding guiding device.
5. concrete piston lubricating according to claim 4 system is characterized in that described guiding device is specially leading block, and described hose clip is loaded in the race of corresponding leading block.
6. concrete piston lubricating according to claim 1 system is characterized in that, the pump that described oil sources comprises the fuel tank that holds lubricant grease and pump is got lubricant grease in described fuel tank.
7. concrete piston lubricating according to claim 6 system is characterized in that the liquid outlet of described pump is provided with filter.
8. concrete piston lubricating according to claim 1 system is characterized in that the import of described oil guiding hole is arranged on the end face of described spool body one side.
9. concrete piston lubricating according to claim 1 system is characterized in that the import of described oil hole is arranged on the end face of described concrete piston rear side.
10. concrete mixer comprises by left and right two conveying cylinders, S swing pipe, hopper and delivery pipes and be afraid of pumping system, and described left and right conveying cylinder all is built-in with the concrete piston; It is characterized in that, also comprise as each described concrete piston lubricating system in the claim 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206364812U CN201874809U (en) | 2010-12-01 | 2010-12-01 | Concrete pump truck and concrete piston lubricating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206364812U CN201874809U (en) | 2010-12-01 | 2010-12-01 | Concrete pump truck and concrete piston lubricating system |
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| Publication Number | Publication Date |
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| CN201874809U true CN201874809U (en) | 2011-06-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206364812U Expired - Lifetime CN201874809U (en) | 2010-12-01 | 2010-12-01 | Concrete pump truck and concrete piston lubricating system |
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| CN (1) | CN201874809U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101975158A (en) * | 2010-12-01 | 2011-02-16 | 徐工集团工程机械股份有限公司建设机械分公司 | Concrete pump truck and concrete piston lubricating system thereof |
-
2010
- 2010-12-01 CN CN2010206364812U patent/CN201874809U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101975158A (en) * | 2010-12-01 | 2011-02-16 | 徐工集团工程机械股份有限公司建设机械分公司 | Concrete pump truck and concrete piston lubricating system thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20110622 Effective date of abandoning: 20120125 |