CN202182000U - Concrete pumping equipment and piston thereof - Google Patents
Concrete pumping equipment and piston thereof Download PDFInfo
- Publication number
- CN202182000U CN202182000U CN2011202706092U CN201120270609U CN202182000U CN 202182000 U CN202182000 U CN 202182000U CN 2011202706092 U CN2011202706092 U CN 2011202706092U CN 201120270609 U CN201120270609 U CN 201120270609U CN 202182000 U CN202182000 U CN 202182000U
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- piston
- hollow skeleton
- skeleton
- pumping equipment
- connecting rod
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Abstract
The utility model relates to the technical field of engineering machinery, and particularly to a set of concrete pump equipment and a piston thereof. The concrete pumping equipment comprises a frame part and a sealing component on the frame part, wherein, the frame part is a hollow frame which is provided with through holes. According the piston and a set of concrete pumping equipment with the same in one embodiment of the utility model, through equipping the piston to the hollow frame with four through holes, not only is overall weight of the piston reduced, but also cooling and lubrication are improved, thereby effectively prolonging service life of the piston. Besides, through equipping a guiding boss and a guiding part, additional mounting of a guiding ring is not required.
Description
Technical field
The utility model relates to technical field of engineering machinery, particularly relates to a kind of piston that is used for concrete pumping equipment.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.
In the course of the work; The concrete piston is reciprocating in carrying cylinder, and working environment is quite abominable, and high pressure and-40 ℃ that not only need bear 6MPa to 30MPa for a long time are to the operating temperature more than 100 ℃; Be in for a long time in the immersion of slime water; And relatively carrying in the process of cylinder motion, be worn easily and exceed normal serviceability temperature, cause its sealed member to produce corrode, lip and fall piece, follow the string or problem such as hydrolysis.
The model utility content
In order to overcome the above-mentioned defective and the deficiency of existing technology, on the one hand, the utility model provides a kind of piston that is used for concrete pumping equipment.
Said piston comprises skeleton part and the sealed member that is arranged at said framework part sub-headend, and wherein, said framework part is divided into the hollow skeleton that offers through hole.
Preferably, offer at least two first through holes on the sidewall of said hollow skeleton.
Preferably, said hollow skeleton is provided with guide ledges and supporting portion, and said guide ledges is outwards extended towards first direction from the outer side wall of said hollow skeleton, and outwards extend towards second direction from the outer side wall of said hollow skeleton said supporting portion.
Preferably, said sealed member comprises guide portion that coats said guide ledges outer ring and the seal lip that coats outer ring, said supporting portion.
Preferably, said piston also comprises connecting rod, and said hollow skeleton comprises the back plate, and said back plate detachably is fixedly connected with connecting rod.
Preferably, said connecting rod inside is provided with the passage that is connected with the cavity of said hollow skeleton.
Preferably, said connecting rod comprises in order to compress the pressing plate of said guide portion.
Preferably, offer at least two second through holes on the back plate of said hollow skeleton.
Preferably, said sealed member is a urethane rubber material clad.
On the other hand, the utility model also provides a kind of concrete pumping equipment with above-mentioned piston.
A kind of piston that the utility model provides and the concrete pumping equipment with this piston through the framework part branch being arranged to offer the hollow skeleton of through hole, have not only reduced the overall weight of piston; Also be convenient to strengthen cooling and increase lubricated; So can effectively improve the working life of piston, in addition, in optimal way; Through guide ledges and guide portion are set, need not extra installation guide ring.
Description of drawings
A kind of structure of piston schematic representation that is provided for the utility model embodiment shown in Figure 1.
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. 1, a kind of structure of piston schematic representation that is used for concrete pumping equipment that is provided for the utility model embodiment shown in Figure 1.
As shown in the figure; This piston comprises: the hollow skeleton of being made up of header board 11 (so-called " preceding " be meant that piston is near concrete that end), back plate 12 (so-called " back " is meant piston that end near conveying cylinder), guide ledges 13 and supporting portion 14 1, and the sealed member of being made up of guide portion 31, front coating part 32 and seal lip 33 3; The structure and the annexation of its each constituent element are following:
Hollow skeleton 1 is one-body molded through cast; (for example has suitable intensity; The intensity of its Manufacturing material is greater than 250MPa); The back plate 12 of hollow skeleton 1 is fixedly connected (also can adopt other detachable fixed connection modes) through bolt 4 with connecting rod 2, the inside of connecting rod 2 is provided with passage 22, and this passage 22 is connected with the cavity 17 of hollow skeleton 1; Offer four through holes 15 (can be distributed on the circumferential side wall) on the sidewall of hollow skeleton 1 (being hollow skeleton 1 and all sides of carrying the cylinder Spielpassung); Offer four through holes 16 on the back plate 12; Outside water tank can be input into cooling water in the inner chamber 17 of hollow skeleton 1 through connecting rod 2 inner passages 22; With cooling piston, cooling water can be discharged through through hole 15 and 16 after absorbing heat, and outside fuel tank also can be delivered to lubricant oil in the inner chamber 17 of hollow skeleton through connecting rod 2 inner passages; And pass through to import and export 15 and 16 and discharge, to increase piston and to carry lubricating between the inside wall of cylinder; Guide ledges 13 goes up the radially extension to the outer piston from the outer side wall of hollow skeleton 1 (when promptly working near that side of carrying the inside wall of cylinder); Supporting portion 14 (perhaps joining portion of outer side wall and header board) from the outer side wall of hollow skeleton 1 stretches out; The outer side wall of supporting portion 14 becomes the horn shape of outside flaring, and the madial wall of supporting portion 14 becomes the arc shape of indent;
Sealed member 3 is a clad; (for example has suitable hardness; This clad is the polyurethane rubber material of hardness range at 80A to 98A); Comprise the guide portion 31 that is used to coat guide ledges 13, be used to coat the seal lip 33 of supporting portion 14 and the front coating part that is used to coat header board 11, the horn shape of the outside flaring of the outer side wall of seal lip 33 (that side that directly contacts with the inwall of carrying cylinder when promptly working) one-tenth, its madial wall becomes the arc shape of indent.
The other end of connecting rod 2 can be fixedly connected (for example clip connected) with the piston rod (scheming not shown) of conveying cylinder; Pressing plate 21 on the connecting rod 2 (can be one-body molded with connecting rod 2; Also can be fixedly connected to form) by the component and the connecting rod of corresponding function; Pressing plate 21 can will coat a side compression of the guide portion 31 of guide ledges 13 when connecting rod 2 is fixedly connected with the back plate 12 of hollow skeleton 1; So can avoid sealed member 3 and hollow skeleton 1 " kindred separates ", the outer rim of pressing plate 21 (promptly near that end of carrying the inside wall of cylinder) can also be provided with a seal ring (scheming not shown).
In the course of the work; Piston is being carried in the cylinder reciprocating through connecting rod 2 at its axis of the drive lower edge of piston rod; And then to concrete mud water generates pump action, sealed member 3 can be used for guaranteeing in the pumping process piston and carries the sealing between the inside wall of cylinder.
In order to guarantee sealing, sealed member 3 and the inwall interference fit of carrying cylinder, therefore, in piston 1 to-and-fro motion process, the wearing and tearing of the seal lip 33 of sealed member 3, especially sealed member 3 are the most serious, cause sealed member 3 to need frequent change.Piston is arranged to hollow skeleton 1; Not only reduced the weight of piston; And through offering four through holes 15 and four through holes 16 (through hole of other quantity also can be set according to practical demand); Be convenient to strengthen cooling and increase lubricated (can through cooperating realization) with existing cooling unit or lubricating fitting; So improve the particularly mechanical property of seal lip 33 of sealed member 3, reduced the heat of saving bit by bit because of the distortion of seal lip 33, and then reduced the rising of the temperature of the sealed member 3 that causes thus; Avoid operating temperature owing to sealed member 3 to exceed sealed member corrode, the lip that normal value causes and fallen piece, follow the string or the problem of early failue such as hydrolysis, prolonged the working life of sealed member 3.
Need to prove that the setting of guide ledges 13 and guide portion 31 thereof makes piston have guide function, need not to install guide ring again; In addition, have than large space between seal lip 33 and the guide portion 31, can conveniently dispel the heat and the Lubricants preservation.
Need to prove,, can be coated with one deck or two-layer adhesive in the outer wall surface of hollow skeleton 1 in order to improve the combination force of sealed member 3 and hollow skeleton 1.
Need to prove; The outer side wall of seal lip 33 becomes the horn shape of outside flaring substantially; The maximum pressure position that so can guarantee piston is positioned at seal lip 33 positions, prevents that the sandstone particle from getting between the inwall of piston and conveying cylinder, causes seal lip 33 and the infringement of carrying cylinder; In order to guarantee that seal lip 33 has the better seal performance, the angle between the axis of seal lip 33 and piston can be limited between 10 degree to 45 degree; Certainly the structural type of seal lip 33 outer side walls is not limited to above-mentioned situation, has the better seal performance as long as can guarantee seal lip 33, for example, has the end one-tenth cylindrical surface structure of lateral part of the flaring seal lip 33 of outside flaring.
Need to prove that the outwards horn shape of flaring is arranged to substantially in supporting portion 14, is in order to support seal lip 33 better, to improve the mechanical property of sealing outlet 33, make the wearing and tearing of seal lip 33 more even, prolonging the working life of seal lip.
Need to prove; The madial wall of seal lip 33 can be arranged to become substantially the arc shape of indent; Force analysis during according to working procedure can draw, and when its madial wall was the arc of indent, the component on piston radial was maximum; So can make seal lip 33 press close to carry the inwall of cylinder to large extent, to obtain the better seal performance.
Need to prove that in order to guarantee the better seal performance, the magnitude of interference between the inwall of seal lip 33 and conveying cylinder can be limited between the 5mm to 13mm; Because if magnitude of interference is too little, sealability descends after a period of time that is easy to cause wearing and tearing, if magnitude of interference greatly; Then can cause difficult installation; And friction area is increased, thus produce more heats, reduce working life.
The utility model 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 (10)
1. a piston comprises the skeleton part and is arranged at the sealed member on the said skeleton part, it is characterized in that said framework part is divided into the hollow skeleton (1) that offers through hole.
2. piston as claimed in claim 1 is characterized in that, offers at least one first through hole (15) on the sidewall of said hollow skeleton.
3. piston as claimed in claim 2; It is characterized in that; Said hollow skeleton (1) is provided with guide ledges (13) and supporting portion (14); Said guide ledges (13) is outwards extended towards first direction from the outer side wall of said hollow skeleton (1), and outwards extend towards second direction from the outer side wall of said hollow skeleton (1) said supporting portion (14).
4. piston as claimed in claim 3 is characterized in that, said sealed member (3) comprises guide portion (31) that coats said guide ledges (13) outer ring and the seal lip (33) that coats outer ring, said supporting portion (14).
5. like each described piston of claim 1 to 4, it is characterized in that said piston also comprises connecting rod (2), said hollow skeleton (1) comprises back plate (12), and said back plate (12) detachably is fixedly connected with connecting rod (2).
6. like the said piston of claim 5, it is characterized in that said connecting rod (2) inside is provided with the passage (22) that is connected with the cavity (17) of said hollow skeleton (1).
7. piston as claimed in claim 6 is characterized in that, said connecting rod (2) comprises the pressing plate (21) in order to compress said guide portion (31).
8. piston as claimed in claim 5 is characterized in that, offers at least one second through hole (16) on the back plate (12) of said hollow skeleton (1).
9. like each described piston of claim 1 to 4, it is characterized in that said sealed member (3) is a urethane rubber material clad.
10. a concrete pumping equipment is characterized in that, said concrete pumping equipment has each described piston of claim 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202706092U CN202182000U (en) | 2011-07-28 | 2011-07-28 | Concrete pumping equipment and piston thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202706092U CN202182000U (en) | 2011-07-28 | 2011-07-28 | Concrete pumping equipment and piston thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202182000U true CN202182000U (en) | 2012-04-04 |
Family
ID=46175039
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202706092U Expired - Fee Related CN202182000U (en) | 2011-07-28 | 2011-07-28 | Concrete pumping equipment and piston thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202182000U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103498792A (en) * | 2013-09-09 | 2014-01-08 | 江苏白雪电器股份有限公司 | Air cylinder component of piston compressor |
-
2011
- 2011-07-28 CN CN2011202706092U patent/CN202182000U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103498792A (en) * | 2013-09-09 | 2014-01-08 | 江苏白雪电器股份有限公司 | Air cylinder component of piston compressor |
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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: 20130507 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20130507 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: 20120404 Termination date: 20160728 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |