CN202545409U - Pressure cylinder and engineering machinery - Google Patents
Pressure cylinder and engineering machinery Download PDFInfo
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- CN202545409U CN202545409U CN2012201633578U CN201220163357U CN202545409U CN 202545409 U CN202545409 U CN 202545409U CN 2012201633578 U CN2012201633578 U CN 2012201633578U CN 201220163357 U CN201220163357 U CN 201220163357U CN 202545409 U CN202545409 U CN 202545409U
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Abstract
The utility model provides a pressure cylinder, which comprises a cylinder barrel, a piston and a piston rod, wherein the piston is arranged in the cylinder barrel; the piston rod is connected with the piston; a cylinder cover is arranged on the end part of the cylinder barrel; the cylinder barrel consists of a metal liner and a composite material fiber layer formed on the outer wall of the metal liner; the outer peripheral face of the cylinder cover is hermetically arranged on the inner wall surface of the metal liner, and is provided with at least one screw hole; a cylinder barrel wall is provided with a through hole which corresponds to the screw hole; and the cylinder cover is fixed together with the cylinder barrel by passing through the through hole and being in thread connection with the screw hole. The utility model further provides engineering machinery comprising the pressure cylinder. In the technical scheme provided by the utility model, a fiber reinforced composite material is wound outside the metal liner for forming a composite cylinder body, so that the compressive strength is enhanced, and the weight of the pressure cylinder is reduced greatly. Meanwhile, the outer wall of the cylinder cover is contacted with the inner wall of the metal liner, so that a certain supporting effect on the cylinder barrel is achieved, and the cylinder barrel strength of the pressure cylinder can be better ensured.
Description
Technical field
The utility model relates to the machinery field, more specifically, relates to a kind of pressure cylinder and contains the engineering machinery of this pressure cylinder.
Background technique
Pressure cylinder, especially oil pressure cylinder are the vitals in the machinery, and it is widely used in the equipment such as engineering machinery, mining machinery and aircraft.
At present, oil pressure cylinder all is by density high-intensity ferrous materials manufacturing bigger than normal, makes that the structure of oil pressure cylinder is comparatively heavy, has both increased unnecessary weight, when machinery is worked, can consume the extra energy again.Especially, when being used for the device of needs up-down, the drawback that the oil pressure cylinder weight of ferrous materials is big is particularly remarkable.
The patent No. is US2006016329, and the patent documentation that name is called " Composite fluid actuated cylinder " discloses a kind of pressure cylinder that has the composite material cylinder barrel.In this patent documentation, the outside wound composite fiber of Steel Lining forms cylinder barrel, and cylinder cap is spirally connected through screw thread and Steel Lining, and composite fiber also is wrapped on the cylinder cap cylinder cap is formed further constraint.The pressure cylinder overall weight of this structure is lighter, and comparatively complicated but assembling is made, manufacture cost is higher.
The model utility content
In order to solve the problems referred to above of existing technology, the utility model provides a kind of pressure cylinder, and its overall weight is light and the assembling manufacturing is comparatively simple.The utility model also provides a kind of engineering machinery that comprises above-mentioned pressure cylinder.
The utility model provides a kind of pressure cylinder; It comprises cylinder barrel, is arranged on the piston in the said cylinder barrel, the piston rod that is connected with said piston; The end of said cylinder barrel is equipped with cylinder cap; Said cylinder barrel is made up of metal inner lining and the composite fiber layer of being located at said metal inner lining outer wall, and the outer circumferential face of said cylinder cap is seal-installed on the internal face of said metal inner lining, and the outer circumferential face of said cylinder cap is provided with at least one screw; Said cylinder barrel wall is provided with and the corresponding through hole of said screw, and said cylinder cap is fixed through the fastening screw trip bolt and the said cylinder barrel that pass said through hole and be screwed onto in the screw.
The technological scheme that the utility model provides is wound in the metal inner lining outside with fibre reinforced composites, forms compound cylinder body, has improved compressive strength, has alleviated the overall weight of pressure cylinder significantly.Simultaneously, the outer wall of cylinder cap contacts with the inwall of metal inner lining, and cylinder barrel has been played certain supporting effect, can guarantee the cylinder barrel intensity of pressure cylinder better; Outer circumferential face at end cap is provided with screw, and through hole is set on the cylinder barrel outer wall accordingly, and through realizing being fastenedly connected of cylinder barrel and end cap along cylinder barrel fastening screw trip bolt radially, not only join strength is high, is convenient to the installation and removal maintenance simultaneously, enhances productivity.
Preferably, said pressure cylinder also comprises the clip that is arranged between said fastening screw trip bolt and the said cylinder barrel outer wall.Clip helps further to improve the structural strength of pressure cylinder, is convenient to install the valve plate seat simultaneously and waits other component, for subsequent installation provides support.
Further; Said pressure cylinder also comprises the valve plate seat of being located on the said clip; Said valve plate seat is provided with the through hole screw; Said through hole screw is provided with the oilhole of axial perforation, and the outer circumferential face of said cylinder cap is provided with the inner inner bolt hole that is connected with said cylinder barrel inside, and said through hole screw passes said clip, cylinder barrel and is screwed onto in the inner bolt hole.Like this; Through hole screw and cylinder cap are through being threaded; Join domain is through seal ring sealing, and the position that through hole screw and valve plate seated connection touch seals through seal ring, through the effective communication of through hole screw cylinder barrel inner region and perimeter; Constitute the path of pressure medium, and can prevent the leakage of cylinder barrel internal pressure medium.
Further, said valve plate seat is welded on the said clip, and said clip is " T " shape.
Like this, the valve plate seat is fixed through welding and T-shape clip, has promptly guaranteed the join strength of valve plate seat and clip, is convenient to operation simultaneously, and cost is low; Cylinder cap gets up through screw and metal inner lining, composite fiber layer and T-shape clip connected, and fastening screw trip bolt can be set to a row or two rows according to the pressure in the pressure cylinder; Sealing between cylinder cap and the metal inner lining realizes through seal ring.
In above-mentioned arbitrary technological scheme, preferably, the wall thickness of said metal inner lining is 1mm～3mm, and/or the wall thickness of said composite fiber layer is 4mm～10mm.Like this,, can greatly reduce the own wt of pressure cylinder, make cylinder barrel weight saving more than 60% through the use of uniting of low density, high-modulus, high-intensity composite material and metal inner lining.
In above-mentioned arbitrary technological scheme, preferably, said composite fiber layer is wound on the said metal inner lining outer wall, and the composite fiber layer is two-layer, is 90 ° of intersections between the two-layer fiber and twines.At the composite fiber layer that twines on the metal inner lining after epoxy resin impregnated processing; Fiber and cylinder tube axis successively alternately twine at an angle; The fiber of adjacent layer is the angular cross near 90 degree, all has more excellent mechanical property to guarantee cylinder barrel radial and axial.
In above-mentioned arbitrary technological scheme, preferably, said composite fiber layer can be glass fibre layer or carbon fiber layer or their combination.The composite fiber layer that is wound in said metal inner lining outer wall can be selected glass fibre, graphite fiber or glass carbon blend fiber, and these composite fibers all have low density, high-modulus, high-intensity advantage, can reduce the own wt of cylinder barrel well.
In the another kind of embodiment of the utility model, preferably, said metal inner lining is the hard chromium that is arranged at said composite fiber layer inwall.Hard chromium can be by a larger margin weight reduction, and can guarantee the wear resistance and the degree of finish of pressure cylinder inwall.
In technique scheme, preferably, the thickness of said hard chromium is 0.25mm～0.3mm.
On the other hand, the utility model also provides a kind of engineering machinery, and it comprises the pressure cylinder in above-mentioned arbitrary technological scheme.
The technological scheme that the utility model provides has following beneficial effect:
1) cylinder cap connects between cylinder cap and the cylinder barrel firmly through fixing along said cylinder barrel fastening piece radially, and assembling is made comparatively simple, and manufacture cost is lower;
2) composite material of low density high modulus and strength and metal inner lining are united use, can make cylinder barrel weight saving more than 60%;
3) the good fatigue performance of composite material can effectively be avoided the unexpected explosion of cylinder barrel;
4) use of through hole screw well constitutes the passage that runs through composite layer and metal inner lining layer, can guarantee that pressure medium comes in and goes out cylinder barrel smoothly and do not reveal;
5) use of T type clip can disperse to connect the pressure of the bolt of cylinder bottom (cylinder cap) and cylinder barrel to composite layer, can also supporting be provided for hollow screw for the valve plate seat provides attachment face again, effectively guarantees the realization of sealing.
Description of drawings
Fig. 1 is the schematic representation according to the said pressure cylinder one embodiment's section of the utility model;
Fig. 2 is an A portion enlarged diagram among Fig. 1;
Fig. 3 is the structural representation of removing in the structure shown in Figure 2 behind fastening screw trip bolt and the through hole screw;
Fig. 4 is a B portion enlarged diagram among Fig. 1;
Fig. 5 is the perspective view of through hole screw in the structure shown in Figure 1;
Fig. 6 is the perspective view of clip in the structure shown in Figure 1.
Wherein, the corresponding relation between reference character and the component names is among Fig. 1 to Fig. 6:
1 cylinder barrel, 2 pistons, 3 piston rods, 4 cylinder caps, 6 valve plate seats
7 clips, 8 through hole screws, 10 fastening screw trip bolts, 11 metal inner linings
12 composite fiber layers, 13 sealed groove, 14 through holes, 41 screws
42 inner bolt holes
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.Need to prove that under the situation of not conflicting, the application's embodiment and the characteristic among the embodiment can make up each other.
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 does not receive the restriction of following disclosed specific embodiment.
Extremely shown in Figure 6 like Fig. 1; The utility model provides a kind of pressure cylinder; Pressure cylinder can be oil cylinder or cylinder; Pressure cylinder comprises cylinder barrel 1, be arranged on piston 2 in the said cylinder barrel 1, with the piston rod 3 that said piston 2 is connected, the end of said cylinder barrel 1 is equipped with cylinder cap 4, said cylinder barrel 1 is made up of metal inner lining 11 and the composite fiber layer 12 that is wound in said metal inner lining 11 outer walls; The outer circumferential face of said cylinder cap 4 is seal-installed on the internal face of said metal inner lining 11; The outer circumferential face of said cylinder cap 4 is provided with at least one screw 41, and said cylinder barrel 1 wall is provided with and screw 41 corresponding through holes 14, and said cylinder cap 4 is fixed with said cylinder barrel 1 through the fastening screw trip bolt 10 that passes said through hole 14 and be screwed onto in the screw 41.
The structure of screw 41 and through hole 14 is as shown in Figure 3.
The technological scheme that the utility model provides is wound in the metal inner lining outside with fibre reinforced composites, forms compound cylinder body, has improved compressive strength, has alleviated the overall weight of pressure cylinder significantly.Simultaneously, the outer wall of cylinder cap contacts with the inwall of metal inner lining, and cylinder barrel has been played certain supporting effect, can guarantee the cylinder barrel intensity of pressure cylinder better; Outer circumferential face at end cap is provided with screw, and through hole is set on the cylinder barrel outer wall accordingly, through realizing being fastenedly connected of cylinder barrel and end cap along cylinder barrel fastening screw trip bolt radially; Not only join strength is high; Simultaneously easy to operate, be convenient to the installation and removal maintenance, enhance productivity.
In this enforcement; Pressure cylinder also comprises the clip 7 that is arranged between said fastening screw trip bolt 10 and said cylinder barrel 1 outer wall, and is located at the valve plate seat 6 on the said clip 7, and said valve plate seat 6 is provided with through hole screw 8; Said through hole screw 8 is provided with the oilhole 81 of axial perforation; The outer circumferential face of said cylinder cap 4 is provided with the inner inner bolt hole 42 that is connected with said cylinder barrel 1 inside, and is as shown in Figure 4, and said through hole screw 8 passes said clip 7, cylinder barrel 1 and is screwed onto in the inner bolt hole 42.
Clip helps further to improve the structural strength of pressure cylinder, is convenient to install the valve plate seat simultaneously and waits other component, for subsequent installation provides support.
Through hole screw and cylinder cap are through being threaded; Join domain is through the seal ring sealing; The position that through hole screw and valve plate seated connection touch is through the seal ring sealing; Through the effective communication of through hole screw cylinder barrel inner region and perimeter, constitute the path of pressure medium, and can prevent the leakage of cylinder barrel internal pressure medium.
Preferably, said valve plate seat 6 is welded on the said clip 7, and said clip 7 is " T " shape.
The structure of through hole screw 8 is as shown in Figure 5, and through hole screw 8 is provided with sealed groove 13, through hole screw 8 through with cylinder cap 4 on inner bolt hole 42 be connected, clip 7 firmly is connected with cylinder barrel 1; The position that through hole screw 8 contacts with valve plate seat 6 is through the seal ring sealing; Cylinder barrel inner region and cylinder barrel perimeter have been linked up effectively through the through hole screw; Constitute the path of pressure medium, and can prevent the leakage of cylinder barrel internal pressure medium, guarantee the working efficiency of pressure cylinder.
The structure of T type clip is as shown in Figure 6, and arrow C indication zone is valve plate seat 6 attachment faces among the figure, and arrow D indication zone is provided with sealed groove.
The wall thickness of said metal inner lining 11 is 1mm～3mm, and/or the wall thickness of said composite fiber layer 12 is 4mm～10mm.Through the use of uniting of low density, high-modulus, high-intensity composite fiber layer and metal inner lining, can greatly reduce the own wt of pressure cylinder, make cylinder barrel weight saving more than 60%; Metal inner lining is processed by steel tube blank, and material can be carbon steel or alloyed steel, and the modified heat treatment of interior laying-in guarantees to have toughness preferably.
Preferably, said composite fiber layer 12 is wound on said metal inner lining 11 outer walls, and composite fiber layer 12 is two-layer, is 90 ° of intersections between the two-layer fiber and twines.
At the composite fiber layer that twines on the metal inner lining after epoxy resin impregnated processing; The axis of fiber and metal inner lining successively alternately twines at an angle; Be between the adjacent two layers fiber near the angular cross of 90 degree and twine, all have a more excellent mechanical property radial and axial to guarantee cylinder barrel.
In the another kind of embodiment of the utility model, said metal inner lining 11 is for being arranged at the hard chromium of said composite fiber layer 12 inwall.Hard chromium can be by a larger margin weight reduction, and can guarantee the wear resistance and the degree of finish of pressure cylinder inwall.
Further, the thickness of said hard chromium is 0.25mm～0.3mm.
The utility model also provides a kind of engineering machinery, comprises the pressure cylinder described in the foregoing description.
The technological scheme that the utility model provides has following beneficial effect:
1) cylinder cap connects between cylinder cap and the cylinder barrel firmly through fixing along said cylinder barrel fastening piece radially, and assembling is made comparatively simple, and manufacture cost is lower;
2) composite material of low density high modulus and strength and metal inner lining are united use, can make cylinder barrel weight saving more than 60%;
3) the good fatigue performance of composite material can effectively be avoided the unexpected explosion of cylinder barrel;
4) use of through hole screw well constitutes the passage that runs through composite layer and metal inner lining layer, can guarantee that pressure medium comes in and goes out cylinder barrel smoothly and do not reveal;
5) use of T type clip can disperse to connect the pressure of the bolt of cylinder bottom (cylinder cap) and cylinder barrel to composite layer, can also supporting be provided for hollow screw for the valve plate seat provides attachment face again, effectively guarantees the realization of sealing.
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. pressure cylinder; Comprise cylinder barrel (1), be arranged on the piston (2) in the said cylinder barrel (1), the piston rod (3) that is connected with said piston (2); The end of said cylinder barrel (1) is equipped with cylinder cap (4); Said cylinder barrel (1) is made up of metal inner lining (11) and the composite fiber layer (12) of being located at said metal inner lining (11) outer wall; It is characterized in that the outer circumferential face of said cylinder cap (4) is seal-installed on the internal face of said metal inner lining (11), the outer circumferential face of said cylinder cap (4) is provided with at least one screw (41); Said cylinder barrel (1) wall is provided with and the corresponding through hole (14) of said screw (41), and said cylinder cap (4) is fixing with said cylinder barrel (1) through the fastening screw trip bolt (10) that passes said through hole (14) and be screwed onto in the screw (41).
2. pressure cylinder according to claim 1 is characterized in that, also comprises the clip (7) that is arranged between said fastening screw trip bolt (10) and said cylinder barrel (1) outer wall.
3. pressure cylinder according to claim 2; It is characterized in that; Also comprise the valve plate seat of being located on the said clip (7) (6), said valve plate seat (6) is provided with through hole screw (8), and said through hole screw (8) is provided with the oilhole (81) of axial perforation; The outer circumferential face of said cylinder cap (4) is provided with the inner inner bolt hole (42) that is connected with said cylinder barrel (1) inside, and said through hole screw (8) passes said clip (7), cylinder barrel (1) and is screwed onto in the inner bolt hole (42).
4. pressure cylinder according to claim 3 is characterized in that, said valve plate seat (6) is welded on the said clip (7), and said clip (7) is " T " shape.
5. according to each described pressure cylinder in the claim 1 to 4, it is characterized in that, the wall thickness of said metal inner lining (11) be 1mm～3mm and or, the wall thickness of said composite fiber layer (12) is 4mm～10mm.
6. according to each described pressure cylinder in the claim 1 to 4, it is characterized in that said composite fiber layer (12) is wound on said metal inner lining (11) outer wall, composite fiber layer (12) is two-layer, is 90 ° of intersections between the two-layer fiber and twines.
7. pressure cylinder according to claim 6 is characterized in that, said composite fiber layer (12) is glass fibre layer or carbon fiber layer or their combination.
8. according to each described pressure cylinder in the claim 1 to 4, it is characterized in that said metal inner lining (11) is for being arranged at the hard chromium of said composite fiber layer (12) inwall.
9. pressure cylinder according to claim 8 is characterized in that, the thickness of said hard chromium is 0.25mm～0.3mm.
10. an engineering machinery is characterized in that, comprises like each described pressure cylinder in the claim 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201633578U CN202545409U (en) | 2012-04-17 | 2012-04-17 | Pressure cylinder and engineering machinery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201633578U CN202545409U (en) | 2012-04-17 | 2012-04-17 | Pressure cylinder and engineering machinery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202545409U true CN202545409U (en) | 2012-11-21 |
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ID=47166051
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201633578U Expired - Lifetime CN202545409U (en) | 2012-04-17 | 2012-04-17 | Pressure cylinder and engineering machinery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202545409U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102996566A (en) * | 2012-11-28 | 2013-03-27 | 中联重科股份有限公司 | Cylinder body of actuating cylinder, manufacturing method thereof and concrete pumping equipment |
| CN103727092A (en) * | 2014-01-24 | 2014-04-16 | 武汉理工大学 | Hydraulic cylinder of carbon fiber composite material |
| CN106930998A (en) * | 2017-05-18 | 2017-07-07 | 武汉科技大学 | A kind of enhanced lightweight hydraulic cylinder of carbon fibre composite |
-
2012
- 2012-04-17 CN CN2012201633578U patent/CN202545409U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102996566A (en) * | 2012-11-28 | 2013-03-27 | 中联重科股份有限公司 | Cylinder body of actuating cylinder, manufacturing method thereof and concrete pumping equipment |
| CN103727092A (en) * | 2014-01-24 | 2014-04-16 | 武汉理工大学 | Hydraulic cylinder of carbon fiber composite material |
| CN106930998A (en) * | 2017-05-18 | 2017-07-07 | 武汉科技大学 | A kind of enhanced lightweight hydraulic cylinder of carbon fibre composite |
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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: 20130515 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20130515 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. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121121 |