CN202441583U - Piston sealing body, concrete pumping piston and concrete pump truck - Google Patents
Piston sealing body, concrete pumping piston and concrete pump truck Download PDFInfo
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- CN202441583U CN202441583U CN2012200146870U CN201220014687U CN202441583U CN 202441583 U CN202441583 U CN 202441583U CN 2012200146870 U CN2012200146870 U CN 2012200146870U CN 201220014687 U CN201220014687 U CN 201220014687U CN 202441583 U CN202441583 U CN 202441583U
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- piston
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- fibre cloth
- lip
- matrix
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Abstract
The utility model provides a piston sealing body which is characterized by comprising a sealing body substrate (1) and fiber cloth (2), wherein the fiber cloth (2) is arranged on the outer surface of the sealing body substrate (1). The utility model also provides a concrete pumping piston and a concrete pump truck. By utilizing the piston sealing body and the concrete pumping piston, the problems that the existing polyurethane sealing body is not heat-resistant, unstable in pouring process and high in cost and is required to be machined are solved; and meanwhile, the problems of high breakage possibility of an integral piston brought by low strength and the eccentric wear because the integral piston is not guided are solved.
Description
Technical field
The utility model relates to mechanical field, more specifically, relates to a kind of piston seal body, concrete pumping piston and a kind of concrete mixer.
Background technique
At present, concrete mixer adopts the split type piston of polyurethane (as the concrete seal) of moulding by casting mostly, and its structure generally comprises connecting rod, guide ring, piston body, concrete seal and pressing plate.
Because the heat resistance of polyurethane material is lower than 150 ℃, its long-term serviceability temperature is about 80 ℃, and this just makes that the employing polyurethane seal life-span is shorter; In addition because the polyurethane seal adopts is pouring technology, the piston seal body poor stability of processing, rate of fault is higher; The polyurethane seal must use having under the lubricated condition, and this has just increased user cost; Also to increase mach cost through the method heat radiation of falling lip, driving oil groove.
In the correlation technique, also have integrated type selflubricating piston, comprise piston head and connection handle, piston head is whole rubber injection-compression molding, and working surface is cambered surface or concave surface.This type of technology adopts integral rubber, but lacks guide structure, and under the effect of lateral force, eccentric wear takes place piston head easily; Because piston head adopts whole rubber injection-compression molding, and it is lower not have the rubbery intensity that strengthens structure, in use is prone to rupture.
In sum, in the existing technology, split type polyurethane piston exists that heat resistance is low, the pouring technology poor stability, rate of fault is high, needs lubricate, heat radiation, problem that processing cost is high; One-piece piston exists because of lacking easy eccentric wear problem that guide structure brings and hanging down the easy-rupturing problem of bringing because of intensity.
The model utility content
Polyurethane seal heat resistance is low in order to solve in the above-mentioned existing technology, pouring technology poor stability, rate of fault are high, it is lubricated to need, heat radiation, processing cost are high; One-piece piston lacks guide structure, eccentric wear be prone to take place, do not have strengthen that structural strength is low, the problem of easy-rupturing or one of at least; The utility model provides a kind of piston seal body, can solve the aforementioned problems in the prior effectively.
The utility model provides a kind of piston seal body, comprises seal matrix and fibre cloth, and the outer surface of said seal matrix is provided with said fibre cloth.Like this, through on the seal matrix, fibre cloth being set, can improve the intensity of piston seal body significantly; Prevent to cause the piston fracture, increased the working life of concrete sealing body, reduce rate of fault because of pressure is excessive; Guarantee that the concrete pumping operation continues to carry out, and enhances productivity.
In technique scheme, preferably, the sidepiece and the lip place of the bottom of said seal matrix, seal matrix are provided with said fibre cloth.
In technique scheme, preferably, said lip comprises lip side and lip end face, and said lip side is a conical surface, and said lip end face is a vertical anchor ring.The lip side is the working surface of concrete pumping piston, and conical surface can increase the service life so that the wearing and tearing of piston seal body are more even; This structure of lip is convenient to once molding formed, makes that simultaneously the concrete pumping piston can be under unlubricated condition, wearing and tearing more uniformly, and work on.Certainly, having under the lubricated condition, the wearing and tearing of lip are slower, longer service life, and noise is little simultaneously, the heat radiation of being more convenient for.
In technique scheme, preferably, the sidepiece of the said seal matrix of said seal matrix is the cylndrical surface, and the part of the sidepiece of said seal matrix and the side transition of said lip is provided with groove.Groove can conveniently be deposited lubricant oil, makes that the working environment of concrete pumping piston is gentle more.
In technique scheme; Preferably; The said fibre cloth that said lip side and said lip end are provided with is 2～8 layers, and the said fibre cloth of the sidepiece setting of said seal matrix is 2～8 layers, and the said fibre cloth that the bottom of said seal matrix is provided with is 3～12 layers.Because active force very big in the working procedure and impact will be born in the bottom of seal matrix, thus in the bottom of seal matrix thicker fibre cloth is set, to improve the bottom and the integral intensity of seal matrix; The radial force that the sidepiece of said seal matrix receives is less with wearing and tearing, and the fibre cloth that therefore is provided with is thinner, can practice thrift cost; Lip side and lip end face mainly play the effect of working surface; The thickness of the fibre cloth that therefore is provided with on it is identical; Fibre cloth is set on the lip end face can also further strengthens the fibre cloth intensity of lip side and avoid the fibre cloth of lip side and seal matrix to break away from, improve working life.
In technique scheme, preferably, said seal matrix adopting rubber is processed.Seal matrix adopting rubber is processed, and can solve the problem of polyurethane material poor heat resistance, has improved the resistance to heat of concrete pumping piston greatly.
In technique scheme, preferably, said fibre cloth adopts aramid fibre, nylon fiber, terylene, polyamide fibre, cotton fiber or their combination in any to process.Adopt these lamination coatings as fibre cloth, can improve the intensity of concrete pumping piston greatly, prevent to cause the piston fracture loss of having avoided the failover shut-down to bring because of pressure is excessive.
In technique scheme, preferably, contain glue-line on the said fibre cloth.Like this, the bonding strength of fibre cloth and seal matrix is further strengthened, and has improved the wear resistance and the sealability of fibre cloth simultaneously.
The utility model also provides a kind of concrete pumping piston; Comprise connecting rod, piston body and pressing plate; Said pressing plate is a cover shape structure; Also comprise above-mentioned novel piston seal, said piston body and said piston seal body all are set on the barrel of urceolus of said pressing plate, and said connecting rod is connected with said pressing plate.Like this, owing to adopted above-mentioned novel piston seal, the heat resistance that efficiently solves existing split type polyurethane piston is low, pouring technology is unstable, needs machining, problem that cost is high.
The utility model also provides a kind of concrete mixer, comprises above-mentioned concrete pumping piston.Problems such as problem that concrete pumping piston heat resistance is low in the above-mentioned existing technology, pouring technology is unstable with regard to having overcome like this, need machining, cost is high and eccentric wear, intensity are low, easy-rupturing.
Description of drawings
Fig. 1 partly cuts open structural representation according to said piston seal body one embodiment of the utility model;
Fig. 2 is the enlarged diagram of A portion among Fig. 1;
Fig. 3 is the overall structure schematic representation of structure shown in Fig. 1;
Fig. 4 partly cuts open structural representation according to the another embodiment of the said piston seal body of the utility model;
Fig. 5 is the overall structure schematic representation of structure shown in Fig. 4;
Fig. 6 is the structural representation according to said concrete pumping piston one embodiment of the utility model.
Wherein, the corresponding relation between reference character and the component names is among Fig. 1 to Fig. 6:
10 piston seal bodies
121 lip sides, 122 lip end faces
2 fibre cloth, 20 concrete pumping pistons, 3 connecting rods
4 piston bodies, 5 pressing plates, 6 guide rings
7 screws, 8 dust rings, 9 packing rings
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.
A lot of details have been set forth in the following description so that make much of the utility model; But; The utility model can also adopt other to be different from other modes described here and implement, and therefore, the utility model is not limited to the restriction of following disclosed specific embodiment.
Embodiment one:
Please refer to Fig. 1, Fig. 2 and Fig. 3, wherein, Fig. 1 partly cuts open structural representation according to said piston seal body one embodiment of the utility model; Fig. 2 is the enlarged diagram of A portion among Fig. 1; Fig. 3 is the overall structure schematic representation of structure shown in Fig. 1.
To shown in Figure 3, the utility model provides a kind of piston seal body 10 like Fig. 1, comprises seal matrix 1 and fibre cloth 2, and sidepiece 13 places of the bottom 11 of said seal matrix 1, lip 12 and seal matrix are provided with said fibre cloth 2.
Like this, through on seal matrix 1, fibre cloth being set, can improve the intensity of piston seal body significantly; Prevent to cause the piston fracture, increased the working life of concrete sealing body, reduce rate of fault because of pressure is excessive; Guarantee that the concrete pumping operation continues to carry out, and enhances productivity.
Wherein, said seal matrix 1 adopts rubber to process.Seal matrix adopting rubber is processed, and can solve the problem of polyurethane material poor heat resistance, has improved the resistance to heat and the wear-resisting property of concrete pumping piston greatly.The piston seal body adopts rubber material, has improved the temperature tolerance and the wear resistance of material, and operating temperature can reach more than 150 ℃, and the greatly low operating range of having expanded the concrete pumping piston adapts to bad working environment more.
Said fibre cloth 2 adopts aramid fibre, nylon fiber, terylene, polyamide fibre, cotton fiber or their combination in any to process.Adopt these lamination coatings as fibre cloth, can improve the intensity of concrete pumping piston greatly, prevent to cause the piston fracture loss of having avoided the failover shut-down to bring because of pressure is excessive.
Press from both sides the mechanical property that cloth can greatly improve the concrete pumping piston through rubber, prevent that the piston that causes because of working pressure is excessive from rupturing, improved the shock proof ability of concrete pumping piston, prolong the working life of piston seal body.
Preferably, contain glue-line after impregnation is handled on the said fibre cloth 2.Like this, the bonding strength of fibre cloth 2 and seal matrix 1 is further strengthened, and has improved the wear resistance and the sealability of fibre cloth 2 simultaneously.
Said seal matrix 1 adopts the compression molding integrator with said fibre cloth 2.Like this, the sidepiece 13 and the lip 12 of seal matrix 1 do not need machining, can be once molding formed, greatly reduce the artificial cost, and reduced production process simultaneously, enhance productivity.Because existing polyurethane seal is through moulding by casting, so its unstable properties, also need on the polyurethane seal, fall lip and oil groove simultaneously, increased cost of labor.The utility model has thoroughly solved the polyurethane seal unstable properties problem of cost problem and moulding by casting through seal matrix 1 and said fibre cloth 2 are adopted the compression molding integrator.
Through adopting the cloth inserted structure of rubber, improved the tension and the tearing toughness of seal, folder fabric (being fibre cloth) adopts aramid fibre, nylon fiber, terylene, polyamide fibre, cotton fiber or their combination in any to process.
Said lip 12 comprises lip side 121 and lip end face 122, and said lip side 121 is a conical surface, and said lip end face 122 is a vertical anchor ring.Lip side 121 is the working surface of concrete pumping piston, and conical surface can increase the service life so that the wearing and tearing of piston seal body are more even; Lip (comprising lip side 121 and lip end face 122) all adopts fibre cloth 2 to strengthen, and can improve the whole service life of concrete pumping piston.
This structure of lip is convenient to once molding formed, makes that simultaneously the concrete pumping piston can be under unlubricated condition, wearing and tearing more uniformly, and work on.Certainly, having under the lubricated condition, the wearing and tearing of lip are slower, longer service life, and noise is little simultaneously, the heat radiation of being more convenient for.
As shown in Figure 2, the said sidepiece 13 of said seal matrix 1 is the cylndrical surface, and the sidepiece 13 of said seal matrix is provided with groove 14 with the part of said lip side 121 transition.Groove 14 can conveniently be deposited lubricant oil, makes that the working environment of concrete pumping piston is gentle more.After adding lubricant oil, the wearing and tearing of piston seal body are slower, longer service life, and the replacement cycle is longer, can improve the working efficiency of complete machine, and lubricant oil also helps to reduce noise simultaneously, convenient heat radiation.
Said lip side 121 is 2～8 layers with the said fibre cloth 2 that said lip end face 122 places are provided with; The said fibre cloth 2 that sidepiece 13 places of said seal matrix are provided with is 2～8 layers, and the said fibre cloth 2 that the bottom 11 of said seal matrix 1 is provided with is 3～12 layers.In actual production, can select according to the model of concrete mixer and the concrete working environment and the cost control of concrete pumping piston.
Because active force very big in the working procedure and impact will be born in the bottom 11 of seal matrix, thus in the bottom of seal matrix thicker fibre cloth is set, to improve the bottom and the integral intensity of seal matrix; The radial force that the sidepiece 13 of said seal matrix receives is less with wearing and tearing, and the fibre cloth that therefore is provided with is thinner, can practice thrift cost; Lip side 121 and lip end face 122 mainly play the effect of working surface; The thickness of the fibre cloth that therefore is provided with on it is identical; Fibre cloth is set on lip end face 122 can also further strengthens the fibre cloth intensity of lip side 121 and avoid the fibre cloth of lip side and seal matrix 1 to break away from, improve working life.
Embodiment two:
See also Fig. 4 and Fig. 5, Fig. 4 be according to the another embodiment of the said piston seal body of the utility model partly cut open structural representation, Fig. 5 is the overall structure schematic representation of structure shown in Fig. 4.
Like Fig. 4, shown in Figure 5, present embodiment and embodiment one are basic identical, and its difference is:
Angle in the present embodiment between lip side 121 and the lip end face 122 makes that greater than the angle between lip side 121 among the embodiment one and the lip end face 122 structure of lip 12 is more abundant, and intensity and wear resistance are stronger.
In structure shown in Figure 4, between lip end face 122 and the vertical plane certain included angle is arranged, make lip end face 122 protrude forward, the intensity of lip 12 is higher, helps improving the pumping efficiency and the working life of concrete pumping piston.
Embodiment three:
See also Fig. 6, Fig. 6 is the structural representation according to said concrete pumping piston one embodiment of the utility model.
As shown in Figure 6; The utility model also provides a kind of concrete pumping piston 20; Comprise connecting rod 3, piston body 4 and pressing plate 5, said pressing plate 5 is a cover shape structure, also comprises above-mentioned novel piston seal 10 (comprising seal matrix 1 and fibre cloth 2); Said piston body 4 and said piston seal body all are set on the barrel of urceolus of said pressing plate 5, and said connecting rod 3 is connected through screw 7 with said pressing plate 5.Like this, owing to adopted above-mentioned piston seal body 10, the heat resistance that efficiently solves existing split type polyurethane piston is low, pouring technology problem of unstable and need machining, problem that cost is high.
Further, also comprise guide ring 6, said guide ring 6 is placed in the outer ring of said piston body 4.Like this, guide ring 6 has been arranged, just solved the eccentric wear problem that one-piece piston occurs in the existing technology and intensity is low, the problem of easy-rupturing.Owing to adopted guide ring 6; Even make the concrete pumping piston under unlubricated situation, also can wear and tear uniformly and work on, improved the whole service life and the replacement cycle of concrete pumping piston; Significantly hang down and reduced replacement cost and rate of fault, enhance productivity.
Preferably; Outer ring at said connecting rod 3 also is provided with dust ring 8; Also be provided with packing ring 9 between said pressing plate 5 and the said seal matrix 1, dust ring 8 can guarantee the cleaning of concrete pumping pistons work environment, reduces the excessive wear that causes because of dust and particle; Packing ring 9 can improve contacting of pressing plate 5 and seal matrix 1, and plays the effect of shock absorbing.
The concrete pumping piston that the utility model provides adopts split-type structural, when the seal of concrete pumping piston damages, can only change the piston seal body, and other parts need not to change, and have reduced replacement cost significantly, improve the economic benefit of producing.
The concrete pumping piston that the utility model provides is compared with the polyurethane piston, because seal matrix 1 has adopted rubber material, on seal matrix 1, is provided with fibre cloth 2 simultaneously, has improved the resistance to heat of concrete pumping piston greatly; Through the mechanical property that fibre cloth can greatly improve the concrete pumping piston is set on rubber material, prevent to cause piston to rupture because of pressure is excessive; The novel piston seal body of this use adopts die press technology for forming, has reduced machining processes, has reduced cost of production; The working surface of the concrete pumping piston that the utility model provides adopts the conical surface or cambered surface, can under unlubricated condition, make the piston proper functioning, and antifatigue and wear-resisting property significantly improve; Also be provided with fibre cloth 2 on the lip end face 122, make to be arranged on fibre cloth 2 difficult drop-offs on the said seal matrix 1, guarantee pumping everything goes well with your work to carry out.
Embodiment four:
The utility model also provides a kind of concrete mixer, comprises above-mentioned concrete pumping piston.Problems such as problem that concrete pumping piston heat resistance is low in the above-mentioned existing technology, pouring technology is unstable with regard to having overcome like this, need machining, cost is high and eccentric wear, intensity are low, easy-rupturing.The stability and the reliability of complete machine have been improved.
The preferred embodiment that the above is merely the utility model is not limited to the utility model, and for a person skilled in the art, the utility model can have various changes and variation.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 seal body is characterized in that, comprises seal matrix (1) and fibre cloth (2), and the outer surface of said seal matrix (1) is provided with said fibre cloth (2).
2. piston seal body according to claim 1 is characterized in that, the bottom (11) of said seal matrix (1), the sidepiece (13) of seal matrix (1) and lip (12) locate to be provided with said fibre cloth (2).
3. piston seal body according to claim 2 is characterized in that, said lip (12) comprises lip side (121) and lip end face (122), and said lip side (121) is a conical surface, and said lip end face (122) is a vertical anchor ring.
4. piston seal body according to claim 3; It is characterized in that; The said sidepiece (13) of said seal matrix (1) locates to be the cylndrical surface, and the said sidepiece (13) of said seal matrix (1) is provided with groove (14) with the part of said lip side (121) transition.
5. piston seal body according to claim 4; It is characterized in that; The said fibre cloth (2) that said lip side (121) and said lip end face (122) are located to be provided with is 2～8 layers; The said fibre cloth (2) that the sidepiece (13) of said seal matrix (1) is provided with is 2～8 layers, and the said fibre cloth (2) that the bottom (11) of said seal matrix (1) is provided with is 3～12 layers.
6. according to each described piston seal body in the claim 1 to 5, it is characterized in that said seal matrix (1) adopts rubber to process.
7. piston seal body according to claim 6 is characterized in that, said fibre cloth (2) adopts aramid fibre, nylon fiber, terylene, polyamide fibre, cotton fiber or their combination in any to process.
8. piston seal body according to claim 7 is characterized in that, said fibre cloth contains glue-line on (2).
9. concrete pumping piston; Comprise connecting rod (3), piston body (4) and pressing plate (5); Said pressing plate (5) is a cover shape structure, it is characterized in that, also comprises like each described piston seal body in the claim 1 to 8; Said piston body (4) and said piston seal body all are set on the barrel of urceolus of said pressing plate (5), and said connecting rod (3) is connected with said pressing plate (5).
10. a concrete mixer is characterized in that, comprises the described concrete pumping piston of claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200146870U CN202441583U (en) | 2012-01-12 | 2012-01-12 | Piston sealing body, concrete pumping piston and concrete pump truck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200146870U CN202441583U (en) | 2012-01-12 | 2012-01-12 | Piston sealing body, concrete pumping piston and concrete pump truck |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202441583U true CN202441583U (en) | 2012-09-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200146870U Expired - Fee Related CN202441583U (en) | 2012-01-12 | 2012-01-12 | Piston sealing body, concrete pumping piston and concrete pump truck |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202441583U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104235006A (en) * | 2014-09-17 | 2014-12-24 | 青岛开世密封工业有限公司 | Semi-coated fabric concrete piston |
| US9664282B2 (en) | 2013-08-20 | 2017-05-30 | Dow Global Technologies Llc | Polyurethane elastomeric seal for hydraulic pumps |
-
2012
- 2012-01-12 CN CN2012200146870U patent/CN202441583U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9664282B2 (en) | 2013-08-20 | 2017-05-30 | Dow Global Technologies Llc | Polyurethane elastomeric seal for hydraulic pumps |
| CN104235006A (en) * | 2014-09-17 | 2014-12-24 | 青岛开世密封工业有限公司 | Semi-coated fabric concrete piston |
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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: 20130502 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20130502 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 31 industrial city, Changsha economic and Technological Development Zone, Hunan, Changsha Patentee before: Sanyi Heavy Industry Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120919 Termination date: 20170112 |