CN202194820U - Piston and concrete pumping device - Google Patents
Piston and concrete pumping device Download PDFInfo
- Publication number
- CN202194820U CN202194820U CN2011203115348U CN201120311534U CN202194820U CN 202194820 U CN202194820 U CN 202194820U CN 2011203115348 U CN2011203115348 U CN 2011203115348U CN 201120311534 U CN201120311534 U CN 201120311534U CN 202194820 U CN202194820 U CN 202194820U
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- piston
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- seal
- lip
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Abstract
The utility model relates to the technical field of engineering machinery and discloses a piston and a concrete pumping device. The piston comprises a framework portion and a sealing part arranged on the framework portion, wherein a groove is arranged on the lateral wall of the framework portion or the sealing part, and oil storage materials containing lubricating grease are filled in the groove. Two guide supporting rings are arranged on the framework portion, the groove is arranged on the sealing part between the two guide supporting rings, and the oil storage materials containing the containing lubricating grease are filled in the groove so that the oil storage materials can move back and forth following the piston, the follow-up lubricating effect can be achieved without changing the existing pumping system structure, and the piston is simple and reliable in structure and low in economic cost. In addition, the guide supporting rings not only provide the guide function but also provide reliable support for a sealing edge, so that the sealing edge is free of unbalance loading, reliability of the sealing edge is guaranteed, and further service life of the integral piston is prolonged.
Description
Technical field
The utility model relates to technical field of engineering machinery, particularly relates to a kind of piston that is used to carry cylinder.The utility model also relates to a kind of concrete pumping equipment with above-mentioned piston.
Background technique
Along with the fast development of economic construction, construction project is increasing, and market also increases for the demand of concrete equipment day by day.The concrete piston applications is in concrete pumping equipments such as concrete pump, concrete mixer and concrete sprayer; Concrete to engineering is used is implemented conveying operations; Therefore; The concrete piston is the critical component in the concrete pumping equipment, and its performance directly affects the performance of concrete pumping equipment.
Fig. 1 is existing a kind of typical concrete structure of piston schematic representation, this concrete piston by connecting rod 201 ', guide ring 202 ', piston body 203 ', seal 204 ' and piston head core cap 205 ' etc. form; Wherein, Seal 204 ' be enclosed within coaxially piston body core cap 205 ' on; Big end (lip end) relies on the step of piston body core cap 205 ' end spacing; The other end be enclosed within coaxially piston body 203 on the core cap ' an end fit, guide ring 202 ' be enclosed within coaxially on piston body 203 ' outer rim simultaneously is after the above-mentioned component-assembled and connecting rod 201 ' be fixedly connected coaxially; Form an integral body, and rely on positioning disk connecting rod 201 ' bar portion connecting structure (being generally flange or yoke configurations) be fixedly connected with the main oil cylinder piston bar of pumping system; Wherein, seal 204 ' be generally macromolecular material, like polyurethane or rubber material; Quality is softer; Particularly its lip is the thinest, and this lip is positioned at front end, bear and carry extruding force and the concrete immense pressure of casing wall to it; The lip rear portion is an oil groove, is used to preserve a certain amount of lubricating grease from lubricating point.
Fig. 2 is the lubrication principle schematic representation of existing a kind of concrete piston, under the driving of master cylinder 5, concrete piston 2 ' and carry cylinder 1 ' between the heat that produces of each sliding friction with the worn piston head with carry the inside wall of cylinder; Therefore need the filling lubricant grease to concrete piston 2 ' with conveying cylinder 1 ' contact position be lubricated; Should lubricated scheme adopt fixedly lubricating point, grease tube 3 ' be fixed in conveying cylinder 1 ' near water tank 4 ' the position, yet; This mode is for quantitatively, level pressure providing lubricant grease; Can't for concrete piston 2 ' with carry cylinder 1 ' provide lubricated reliably, if occur the dry friction situation between the two, with reduce greatly concrete piston 2 ' with carry cylinder live 1 ' working life; And because fricative a large amount of heats will reduce the sealing effect of seal, or even cause the spillage phenomenon; To this problem; Chinese patent document CN201010569676 provides a kind of concrete piston lubricating system; Be used for the lubricated of the interior concrete piston of left and right conveying cylinder, two concrete piston 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 concrete piston; Two hose reels respectively with two corresponding settings of concrete piston; And the spool body of hose reel is provided with the oil guiding hole that is communicated with oil sources, and flexible pipe is wrapped on the spool body, and the inboard fixed end of flexible pipe is communicated with the outlet of oil guiding hole respectively; The outside external part of each flexible pipe respectively with the concrete piston on the import of oil hole be communicated with, and stretch out along with the displacement of corresponding concrete piston or regain.
There are following problem in existing concrete piston and lubrication system thereof: (1) or can only provide lubricant grease (like above-mentioned fixedly lubricating point mode) quantitatively, level pressure is provided; In to-and-fro motion; Lubricant oil is easy to consume too fast; Cause the dry friction phenomenon, or complex structure, financial cost high (like the disclosed scheme of CN201010569676); (2) lip of seal bears and carries plus-pressure and the concrete immense pressure of the inside wall of cylinder to it, but lacks effectively and supports, and lip very easily damages, and influences the working life of concrete piston.
The model utility content
In view of this, when the to-and-fro motion, the dry friction phenomenon appears in the too fast consumption of lubricant oil for fear of the concrete piston, and on the one hand, the utility model provides a kind of servo-actuated lubricated piston.
This piston comprises the skeleton part and is located at the sealed member on this skeleton part, wherein, offers groove on the periphery wall of said skeleton part or said sealed member, places the oil storage material that contains lubricant grease in the said groove.
Preferably; Said framework part branch comprises the first guiding support ring; The said first guiding support ring comprises the first guiding anchor ring and first supporting surface; Said sealed member comprises first coating portion that is covered in the said first guiding anchor ring and the second coating portion that is covered in said first supporting surface, and the outer rim of the said second coating portion is provided with first seal lip.
Preferably; Said skeleton part also comprises the second guiding support ring; The said second guiding support ring comprises the second guiding anchor ring and second supporting surface; Said sealed member also comprises the 3rd coating portion that is covered in the said second guiding anchor ring and the 4th coating portion that is covered in said second supporting surface, and the outer rim of said the 4th coating portion is provided with second lip of seal.
Preferably, said groove is on the sealed member between said first guiding support ring and the said second guiding support ring.
Preferably, said oil storage material is specially sponge or wool felt.
Preferably, said groove is an annular groove.
Preferably, said skeleton part or detachable be fixedly connected one-body molded with said sealed member.
Preferably, the distance of said first supporting surface and said first seal lip is within 5mm to 25mm, and the distance of perhaps said second supporting surface and said second lip of seal is within 5mm to 25mm.
On the other hand, the utility model also provides a kind of concrete pumping equipment, and this concrete pumping equipment has as above arbitrary described piston.
A kind of piston that the utility model improves and concrete pumping equipment with this piston; Through on the sidewall of skeleton part or sealed member, offering a groove; And in this groove, place the oil storage material that contains lubricant grease, and make the oil storage material follow piston and move around, avoid owing to the too fast consumption of lubricant oil causes the dry friction phenomenon; Need not to change existing pumping system structure and can reach the lubricated effect of servo-actuated, simple and reliable for structure and cost is lower; In addition; In a kind of optimal way,, be not merely whole piston guide function is provided through on the skeleton part, the guiding support ring that one or two have support function and guide function simultaneously being set; Also reliable supporting is provided for seal lip; Make seal lip can not receive unbalance loading, guaranteed the reliability of seal lip, and then prolonged the working life of whole piston.
Description of drawings
Fig. 1 is existing a kind of typical concrete structure of piston schematic representation;
Fig. 2 is the lubrication principle schematic representation of existing a kind of concrete piston;
A kind of structure of piston schematic representation that Fig. 3 is provided for the utility model embodiment.
Embodiment
In order to make those skilled in the art understand the technological scheme of the utility model better, the utility model is done further to specify below in conjunction with accompanying drawing and specific embodiment.Should be pointed out that description and description order to concrete structure in this part only are the explanations to specific embodiment, should not be regarded as that the protection domain of the utility model is had any restriction.
Please refer to Fig. 3, a kind of structure of piston schematic representation that Fig. 3 is provided for the utility model embodiment is described in detail the piston among this embodiment below in conjunction with Fig. 3.
As shown in the figure; This piston comprises skeleton part 3 and is set in the sealed member 2 on the skeleton part 3; Skeleton part 3 can be processed by iron and steel or the bigger material of other hardness; Sealed member 2 can be processed by macromolecular material (for example urethane rubber material); Symmetrical substantially before and after the whole piston; Skeleton part 3 comprise the first guiding support ring 31 and second guiding support ring 33, the first guiding support rings 31 and the second guiding support ring 33 piston shaft upwards at interval an end distance leave, wherein: first support ring 31 that leads comprises first the lead anchor ring 301 and first supporting surface 302; The second guiding support ring 33 comprises the second guiding anchor ring 303 and second supporting surface 304; Correspondingly, sealed member 2 comprise the first coating portion 22 that is covered in the first guiding anchor ring 301, be covered in said first supporting surface 302 the second coating portion 21, be covered in the 3rd coating portion 23 of the said second guiding anchor ring 303 and be covered in 24, the second coating portions 21 of the 4th coating portion of said second supporting surface 304 and the outer rim of the 4th coating portion 24 is respectively equipped with first seal lip 201 and the second lip of seal 202 of flaring (tubaeform) outwardly; Offer a groove 1 on the sealed member 2 between the first guiding support ring 31/ first coating portion 22 and the second guiding support ring 33/ the 3rd coating portion, place the oil storage material that contains lubricant grease (like butter) in the groove 1, this oil storage material is a sponge.
The distance of the distance of the first guiding supporting surface 302 and first seal lip 201 and the second guiding supporting surface 304 and second lip of seal 202 is all within 5mm to 25mm.
In the course of the work; First lip 201 of seal 2 and second lip 202 are adjacent under the effect of extruding of carrying casing wall and slime water pressure carries the inside wall of cylinder to play the effect of isolated sealing; The first guiding anchor ring 301 and the second guiding anchor ring 303 have certain width and certain at interval distance; Therefore in the movement process of piston, play guiding; Sealed member 2 is covered in the first coating portion 22 and the effect that guide ring then plays in the second coating portion 23 of the first guiding anchor ring 301 and the second guiding anchor ring 303, and the distance of the distance of first supporting surface 302 and first seal lip and second supporting surface 304 and second lip of seal 202 is very closely (within about 5mm to 25mm) all, therefore; In the piston motion process; The first guiding support ring 31 plays the good supporting effect with second guiding support ring 33 pairs of sealed members 2 especially its first seal lip 201 with second lip of seal 202 because the sponge (oil storage material) in the groove 1 has a certain amount of lubricant grease (like butter), in the piston motion process with the contact friction of the conveying inside wall of cylinder; Lubricant grease is delivered to casing wall and forms oil film; The seal 2 of piston is lubricated with the contact segment of carrying the inside wall of cylinder, reduce friction, reduce the wastage.
In existing conveying cylinder; In order to guarantee the better seal performance, the seal lip of concrete piston and conveying inside wall of cylinder interference fit, piston body of concrete piston (skeleton part) and conveying inside wall of cylinder Spielpassung; In the above-described embodiments; The diameter D of first seal lip 201 and second lip of seal 202 is all than the big 3mm to 10mm of inner diameter D1 of said conveying cylinder, for example big 3mm, 5mm, 7mm or 10mm, and the diameter of said skeleton part 3 (be specially the first guiding anchor ring 301 and second lead anchor ring 303) is than the little 0.5mm to 6mm of inner diameter D1 of said conveying cylinder; Particularly; Material by skeleton part 3 is decided, as is nonmetallic material such as nylon, and its diameter is than carrying about the smaller 0.5mm of inside wall of cylinder diameter D1; As be other metallic material, its diameter is than carrying the little 3mm to 6mm of inside wall of cylinder diameter D1, and other nonmetallic material of its surface-coated get final product.
In the foregoing description, adopt sponge as the oil storage material, but in other embodiments, can also adopt other oil storage materials such as wool felt.
In the foregoing description, suppose that first seal lip 201 is positioned at piston nose (directly contacting that end of slime water), second lip of seal 202 is positioned at piston rear end; Under normal assembling situation, first seal lip 201 mainly plays sealing and pressure transmission, receives bigger frictional force; And because second lip of seal 202 is positioned at piston rear end and mainly plays dustproof effect, the active force that receives is less, and the wearing and tearing in the identical time are lighter; When the sealability of first seal lip 201 drops to can not satisfy piston body to the requiring of sealability the time, second lip of seal 202 still has the better seal performance, at this moment; Just can piston body be reversed 180 °; Again assemble, bear the sealing and the effect of pressure transmission, so can prolong the working life of sealed member by second lip of seal 202; Also prolong the working life of piston body, also reduced the manufacture cost of piston body (skeleton part); In addition; Two seal lip 201 and 202 setting make the intermediate portion of piston side wall and carry between the cylinder to have formed an airtight cavity, can guarantee that lubricant oil remains in this cavity for a long time; Sealed member 2 is lubricated; Reduce friction and give birth to heat, reduce the rate of wear of sealed member, prolong the working life of sealed member.
In the foregoing description; Groove 1 is opened on the clad (sealed member 2) between the first guiding support ring 31 and the second guiding support ring 33; Under other situations; If two guiding do not have clad between the support rings, also can groove 1 be arranged on two skeletons parts between the guiding support ring, perhaps directly with the cavity that forms between two guiding support rings as groove.
In the foregoing description, groove 1 can be annular groove, and promptly groove 1 is around on the periphery wall that is arranged at seal lip, and in addition, the number of groove 1 does not limit, and promptly can one or more annular groove be set according to lubricated needs on the periphery wall of seal lip; In other embodiments, groove can not be an annular groove, but has the notch of certain-length, and its number can be two, and is distributed on the periphery wall of seal lip, promptly is on the same circumferential plane.
In the foregoing description, skeleton part 3 has two guiding support rings of symmetry substantially, correspondingly; Sealed member 2 has two seal lips of symmetry substantially, so can reach better sealing effect, but in other embodiments; A guiding support ring can also only be set as required; Correspondingly, sealed member has only a seal lip, under this situation; Groove can be opened on the sidewall of skeleton part or sealed member as required, and this groove is placed with the oil storage material that contains lubricant grease equally.
In the foregoing description, skeleton part 3 can be one-body molded with sealed member 3, also can detachably be fixedly connected.
In the foregoing description, the first coating portion 22 and the second coating portion 23 are covered in the first guiding anchor ring 301 and the second guiding anchor ring 303 respectively, play the effect of guide ring, make piston need not to use extra guide ring, have reduced the manufacture cost of piston.
Need to prove; The first guiding support ring 31 and second support ring 33 setting that is spaced a distance of leading; Not only be convenient to offer groove 1 and hold the oil storage material, also skeleton partly is divided into two sections that are spaced a distance simultaneously, the support effect that both guaranteed to lead is by not gaining in weight.
In the foregoing description, the number of groove is one, in other embodiments, a plurality of grooves can also be set as required, all places the oil storage material of oil-containing lubricant grease in each groove.
A kind of piston that the utility model embodiment provides through two guiding support rings that have guide function and support function simultaneously are set at the framework part branch, and is offered a groove on the sealed member between two support rings; And in this groove, place the oil storage material (sponge) that contains lubricant grease, and make the oil storage material follow piston and move around, avoid owing to the too fast consumption of lubricant oil causes the dry friction phenomenon; Need not to change existing pumping system structure and can reach the lubricated effect of servo-actuated; Simple and reliable for structure and financial cost is low, in addition, the guiding support ring not only provides guide function; Also reliable supporting is provided for seal lip; Make seal lip can not receive unbalance loading, guaranteed the reliability of seal lip (sealed member), and then prolonged the working life of whole piston.
The utility model embodiment also provides a kind of concrete pumping equipment; This concrete pumping equipment has above-mentioned piston; Because above-mentioned piston has above-mentioned technique effect, therefore, the concrete pumping equipment with this piston also should possess the corresponding techniques effect; Its practical implementation process is similar to the above embodiments, does not give unnecessary details now.
The above is merely the preferred embodiment of the utility model; Not in order to restriction the utility model; All within the spirit and principle of the utility model, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection domain of the utility model.
Claims (9)
1. piston; Comprise skeleton part (3) and be located at the sealed member (2) on this skeleton part (3); It is characterized in that, offer groove (1) on the periphery wall of said skeleton part (3) or said sealed member (2), place the oil storage material that contains lubricant grease in the said groove (1).
2. piston as claimed in claim 1; It is characterized in that; Said skeleton part (3) comprises the first guiding support ring (31); The said first guiding support ring (31) comprises first guiding anchor ring (301) and first supporting surface (302), and said sealed member (2) comprises first coating portion (22) that is covered in the said first guiding anchor ring (301) and the second coating portion (21) that is covered in said first supporting surface (302), and the outer rim of the said second coating portion (21) is provided with first seal lip (201).
3. piston as claimed in claim 2; It is characterized in that; Said skeleton part (3) also comprises the second guiding support ring (33); The said second guiding support ring (33) comprises second guiding anchor ring (303) and second supporting surface (304), and said sealed member (2) also comprises the 3rd coating portion (23) that is covered in the said second guiding anchor ring (303) and the 4th coating portion (24) that is covered in said second supporting surface (304), and the outer rim of said the 4th coating portion (24) is provided with second lip of seal (202).
4. piston as claimed in claim 3 is characterized in that, said groove (1) is positioned on the sealed member (2) between said first guiding support ring (31) and the said second guiding support ring (33).
5. like each described piston of claim 1 to 4, it is characterized in that said oil storage material is specially sponge or wool felt.
6. like each described piston of claim 1 to 4, it is characterized in that said groove is an annular groove.
7. like each described piston of claim 1 to 4, it is characterized in that said skeleton part (3) or detachable be fixedly connected one-body molded with said sealed member (2).
8. like each described piston of claim 2 to 4; It is characterized in that; The distance of said first supporting surface (302) and said first seal lip (201) is within 5mm to 25mm, and the distance of perhaps said second supporting surface (304) and said second lip of seal (202) is within 5mm to 25mm.
9. a concrete pumping equipment is characterized in that, said concrete pumping equipment has each described piston of claim 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203115348U CN202194820U (en) | 2011-08-25 | 2011-08-25 | Piston and concrete pumping device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203115348U CN202194820U (en) | 2011-08-25 | 2011-08-25 | Piston and concrete pumping device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202194820U true CN202194820U (en) | 2012-04-18 |
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ID=45949735
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203115348U Expired - Fee Related CN202194820U (en) | 2011-08-25 | 2011-08-25 | Piston and concrete pumping device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202194820U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102705224A (en) * | 2012-06-27 | 2012-10-03 | 三一重工股份有限公司 | Concrete piston, pumping system and concrete pump |
| CN103410722A (en) * | 2013-08-12 | 2013-11-27 | 三一汽车制造有限公司 | Concrete piston, pumping system and concrete pump |
| CN104763154A (en) * | 2014-11-25 | 2015-07-08 | 李树本 | Trailer concrete pump truck |
| CN106481542A (en) * | 2016-12-02 | 2017-03-08 | 三汽车制造有限公司 | Concrete piston and pumping system and concrete pump |
| CN110091852A (en) * | 2019-06-03 | 2019-08-06 | 梁芳文 | A kind of strength dual circuit wheel cylinder |
-
2011
- 2011-08-25 CN CN2011203115348U patent/CN202194820U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102705224A (en) * | 2012-06-27 | 2012-10-03 | 三一重工股份有限公司 | Concrete piston, pumping system and concrete pump |
| CN102705224B (en) * | 2012-06-27 | 2015-07-08 | 三一重工股份有限公司 | Concrete piston, pumping system and concrete pump |
| CN103410722A (en) * | 2013-08-12 | 2013-11-27 | 三一汽车制造有限公司 | Concrete piston, pumping system and concrete pump |
| CN103410722B (en) * | 2013-08-12 | 2016-12-28 | 三一汽车制造有限公司 | Concrete piston, pumping system and concrete pump |
| CN104763154A (en) * | 2014-11-25 | 2015-07-08 | 李树本 | Trailer concrete pump truck |
| CN106481542A (en) * | 2016-12-02 | 2017-03-08 | 三汽车制造有限公司 | Concrete piston and pumping system and concrete pump |
| CN110091852A (en) * | 2019-06-03 | 2019-08-06 | 梁芳文 | A kind of strength dual circuit wheel cylinder |
| CN110091852B (en) * | 2019-06-03 | 2023-11-03 | 广西环江航舵汽车科技有限公司 | Powerful double-pipeline brake cylinder |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SANY AUTOMOBILE MANUFACTURING CO., LTD. Free format text: FORMER OWNER: SANYI HEAVY INDUSTRY CO LTD Effective date: 20130521 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20130521 Address after: 410100 Changsha economic and Technological Development Zone, Hunan City, the 31 industrial city Patentee after: SANY Automobile Manufacturing Co., Ltd. Address before: 410100 Changsha economic and Technological Development Zone, Hunan City, the 31 industrial city Patentee before: Sanyi Heavy Industry Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120418 Termination date: 20150825 |
|
| EXPY | Termination of patent right or utility model |