CN103470755B - Piston cylinder and manufacturing method thereof - Google Patents
Piston cylinder and manufacturing method thereof Download PDFInfo
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- CN103470755B CN103470755B CN201310412340.0A CN201310412340A CN103470755B CN 103470755 B CN103470755 B CN 103470755B CN 201310412340 A CN201310412340 A CN 201310412340A CN 103470755 B CN103470755 B CN 103470755B
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- 238000004519 manufacturing process Methods 0.000 title abstract 2
- 239000002131 composite material Substances 0.000 claims abstract description 246
- 230000002093 peripheral effect Effects 0.000 claims abstract description 5
- 239000012530 fluid Substances 0.000 claims description 21
- 238000000034 method Methods 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 10
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 8
- 239000004917 carbon fiber Substances 0.000 claims description 8
- 150000001875 compounds Chemical class 0.000 claims description 8
- 239000003365 glass fiber Substances 0.000 claims description 8
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 8
- 238000004804 winding Methods 0.000 claims description 4
- 239000003921 oil Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000009434 installation Methods 0.000 description 4
- 238000004513 sizing Methods 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Actuator (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
The invention provides a piston cylinder and a manufacturing method thereof. Wherein the piston cylinder includes: a cylinder (10); the axial prestress composite material layer (61) is arranged around the outer peripheral wall of the cylinder barrel (10) and used for bearing the axial load applied to the cylinder barrel (10); and a circumferential prestressed composite material layer (62) which is arranged around the outer circumferential wall of the axial prestressed composite material layer (61) and is used for bearing the circumferential load applied to the cylinder barrel (10). The technical scheme of the invention can improve the capability of the cylinder barrel for bearing axial load and circumferential load, and effectively protect the cylinder barrel.
Description
Technical field
The present invention relates to piston technical field, in particular to the making method of a kind of piston cylinder and piston cylinder.
Background technique
In the cylinder structure schematic diagram shown in Fig. 1, the perisporium of cylinder barrel 10 ' offers two oilholes 11 ', one of them oilhole 11 ' is connected with the rod chamber of oil cylinder, another oilhole 11 ' is connected with the rodless cavity of oil cylinder, two hydraulic fluid ports 20 ' are fixedly welded on the periphery wall of cylinder barrel 10 ' respectively, and two hydraulic fluid ports 20 ' are connected with two oilhole 11 ' one_to_one corresponding respectively.Piston rod 50 ' is located in the inner chamber of cylinder barrel 10 ' movingly along the axial direction of cylinder barrel 10 ', guide sleeve 30 ' is positioned at the cylinder mouth place of cylinder barrel 10 ', the periphery wall of guide sleeve 30 ' is threaded fixing with the inner circle wall of cylinder barrel 10 ', guide sleeve 30 ' has the through hole for wearing piston rod 50 ', piston 40 ' to be built in the inner chamber of cylinder barrel 10 ' and to be set on piston rod 50 ', the inner circle wall of piston 40 ' is threaded fixing with the periphery wall of piston rod 50 ', under the effect of hydraulic oil, piston 40 ' moves with piston rod 50 '.Due to the restriction of two hydraulic fluid ports 20 ', ring orientation prestress composite layer 60 ' is set on the portion perimeter wall of cylinder barrel 10 ', for bearing the annular load suffered by cylinder barrel 10 ', stops the circumferential deformation of cylinder barrel 10 ' under the effect of hoop load.Ring orientation prestress composite layer 60 ' is wound by the circumferencial direction of composite material along cylinder barrel 10 ', play hoop reinforing function, simultaneously, this part cylinder barrel 10 ' being coated with ring orientation prestress composite layer 60 ' suitably can reduce wall thickness, thus plays the effect reducing cylinder barrel 10 ' weight.
But, ring orientation prestress composite layer 60 ' be composite material is wrapped in cylinder barrel 10 ' along the circumferencial direction of cylinder barrel 10 ' periphery wall on formed, this hoop canoe result in the anti-hoop load of ring orientation prestress composite layer 60 ' and the performance of not axial load resistant, when cylinder barrel 10 ' is subject to thrust load, thrust load is almost all born by cylinder barrel 10 ', easily causes cylinder barrel 10 ' to damage.
Summary of the invention
The present invention aims to provide the making method of a kind of piston cylinder and piston cylinder, can improve the ability that cylinder barrel bears thrust load and hoop load, available protecting cylinder barrel.
To achieve these goals, according to an aspect of the present invention, provide a kind of piston cylinder, comprising: cylinder barrel; Axial prestress composite layer, the periphery wall being centered around cylinder barrel is arranged, in order to bear the thrust load suffered by cylinder barrel; And ring orientation prestress composite layer, the periphery wall being centered around axial prestress composite layer is arranged, in order to bear the hoop load suffered by cylinder barrel.
Further, the periphery wall of cylinder barrel has multiple projection; Composite material along the axial direction winding of cylinder barrel in multiple projection to form axial prestress composite layer.
Further, the periphery wall of cylinder barrel has two groups of projections, and lay respectively at the two ends of cylinder barrel, the often group projection in two groups of projections comprises multiple projection, and multiple projection is arranged along the peripheral direction uniform intervals of cylinder barrel.
Further, ring orientation prestress composite layer is prefabricated ring orientation prestress composite drum, and ring orientation prestress composite drum is set on axial prestress composite layer to form ring orientation prestress composite layer.
Further, ring orientation prestress composite drum and axial prestress composite layer interference fit.
Further, the composite material forming axial prestress composite layer is carbon fiber composite or glass fiber compound material; The composite material forming ring orientation prestress composite layer is carbon fiber composite or glass fiber compound material.
Further, piston cylinder also comprises: guide sleeve, is fixed on the cylinder mouth place of cylinder barrel; First pressure fluid oral area, is fixed on the exterior edge face of guide sleeve, and is connected with the rod chamber of piston cylinder; And the second pressure fluid oral area, be fixed on the exterior edge face of the cylinder bottom of cylinder barrel, and be connected with the rodless cavity of piston cylinder; The first end of axial prestress composite layer is concordant with the cylinder mouth of cylinder barrel, and the second end of axial prestress composite layer is concordant with the cylinder bottom of cylinder barrel; The first end of ring orientation prestress composite layer is concordant with the first end of axial prestress composite layer, and the second end of ring orientation prestress composite layer and second of axial prestress composite layer is held level with both hands together.
According to a further aspect in the invention, provide a kind of making method of piston cylinder, comprise the following steps: the periphery wall around the cylinder barrel of piston cylinder arranges axial prestress composite layer, in order to bear the thrust load suffered by cylinder barrel; And ring orientation prestress composite layer is set around the periphery wall of axial prestress composite layer, in order to bear the hoop load suffered by cylinder barrel.
Further, the periphery wall around the cylinder barrel of piston cylinder arranges axial prestress composite layer, comprises the following steps in order to the thrust load of bearing suffered by cylinder barrel: apply axial pressure in the both ends of the surface of cylinder barrel; Along the axial direction of cylinder barrel on the periphery wall of cylinder barrel wound composite to form axial prestress composite layer; And unloading axial pressure.
Further, the periphery wall of cylinder barrel has two groups of projections, and lay respectively at the two ends of cylinder barrel, the often group projection in two groups of projections comprises multiple projection, and multiple projection is arranged along the peripheral direction uniform intervals of cylinder barrel; Axial direction wound composite on the periphery wall of cylinder barrel along cylinder barrel comprises the following steps to form axial prestress composite layer: be wrapped in two groups of projections the axial direction of composite material along cylinder barrel to form axial prestress composite layer.
Further, apply axial pressure in the both ends of the surface of cylinder barrel to comprise the following steps: the axial pressure applying 10 to 100 MPas in the both ends of the surface of cylinder barrel.
Further, periphery wall around axial prestress composite layer arranges ring orientation prestress composite layer, comprise the following steps in order to the hoop load of bearing suffered by cylinder barrel: prefabricated ring orientation prestress composite drum, the internal diameter of ring orientation prestress composite drum is less than the external diameter of axial prestress composite layer; And to form ring orientation prestress composite layer on periphery wall ring orientation prestress composite drum being set in axial prestress composite layer, ring orientation prestress composite layer and axial prestress composite layer interference fit.
Apply technological scheme of the present invention, periphery wall around cylinder barrel arranges axial prestress composite layer, periphery wall around axial prestress composite layer arranges ring orientation prestress composite layer, wherein axial prestress composite layer be used for bearing suffered by cylinder barrel thrust load, ring orientation prestress composite layer be used for bearing suffered by cylinder barrel hoop load, compared in prior art, periphery wall just around cylinder barrel arranges ring orientation prestress composite layer, thrust load is caused almost all to be born by cylinder barrel, technological scheme of the present invention can pass to axial prestress composite layer by the thrust load be subject to by cylinder barrel, the hoop dynamic changes process be subject to by cylinder barrel is to ring orientation prestress composite layer, the thrust load that minimizing cylinder barrel self is born and hoop load, thus improve the axial load resistant of cylinder barrel and the ability of hoop load, available protecting cylinder barrel, avoid it to be damaged.
Accompanying drawing explanation
The Figure of description forming a application's part is used to provide a further understanding of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 shows the schematic diagram of the piston cylinder according to prior art;
Fig. 2 shows the structural representation of oil cylinder according to an embodiment of the invention;
Fig. 3 shows oil cylinder according to an embodiment of the invention in installation shaft to the schematic diagram before prestressed composite materials layer;
Fig. 4 shows according to the A-A of Fig. 3 to sectional view;
Fig. 5 show according to an embodiment of the invention oil cylinder installation shaft to the scheme of installation of prestressed composite materials layer;
Fig. 6 show according to an embodiment of the invention oil cylinder installing ring to the scheme of installation of prestressed composite materials layer; And
Fig. 7 shows the schematic diagram that oil cylinder assembling according to an embodiment of the invention terminates.
Embodiment
Below with reference to the accompanying drawings and describe the present invention in detail in conjunction with the embodiments.It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.
As shown in Figure 2, according to embodiments of the invention, provide a kind of piston cylinder, comprise cylinder barrel 10, first pressure fluid oral area 21, second pressure fluid oral area 22, guide sleeve 30, piston 40, piston rod 50, axial prestress composite layer 61 and ring orientation prestress composite layer 62.Wherein cylinder barrel 10 comprises cylinder bottom 12 and the cylinder mouth relative with cylinder bottom 12, guide sleeve 30 is embedded at cylinder mouth place, the periphery wall of guide sleeve 30 is threaded fixing with the inner circle wall of cylinder barrel 10, piston rod 50 is located in the inner chamber of cylinder barrel 10 and the endoporus of guide sleeve 30, piston rod 50 can move reciprocatingly along the axial direction of cylinder barrel 10, it is outer and be embedded in the inner chamber of cylinder barrel 10 that piston 40 is set in piston rod 50, the inner circle wall of piston 40 is threaded fixing with the periphery wall of piston rod 50, piston 40 can do axial direction motion with piston rod 50, the inner chamber of cylinder barrel 10 is divided into rod chamber and rodless cavity by piston 40, first pressure fluid oral area 21 is connected with rod chamber by the first pressure flow body opening 31, second pressure fluid oral area 22 is connected with rodless cavity by the second pressure flow body opening 13.Under the promotion of the pressure fluid injected at the first pressure fluid oral area 21 or the second pressure fluid oral area 22, piston 40 does axial direction motion with piston rod 50.Axial prestress composite layer 61 is arranged around the periphery wall of cylinder barrel 10, and ring orientation prestress composite layer 62 is arranged around the periphery wall of axial prestress composite layer 61.
Axial prestress composite layer 61 is used for bearing the thrust load that cylinder barrel 10 passes over, ring orientation prestress composite layer 62 is used for bearing the hoop load that cylinder barrel 10 passes over, so axial prestress composite layer 61 and ring orientation prestress composite layer 62 are centered around on cylinder barrel 10 successively, the thrust load suffered by cylinder barrel 10 and hoop load can be shared, the thrust load that minimizing cylinder barrel 10 is born self and hoop load, thus improve the axial load resistant of cylinder barrel 10 and the ability of hoop load, avoid cylinder barrel 10 to deform.Compared in prior art, cylinder barrel 10 only encloses ring orientation prestress composite layer, cause cylinder barrel 10 almost to bear whole thrust load, technological scheme of the present invention can available protecting cylinder barrel 10, avoids it to be damaged.
Axial prestress composite layer 61 to be wrapped on cylinder barrel 10 along the axial direction of cylinder barrel 10 by composite material and to be formed.In conjunction with see shown in Fig. 3 to Fig. 5, when assembled shaft is to prestressed composite materials layer 61 and cylinder barrel 10, applies axial pressure P respectively at the two ends of cylinder barrel 10, make cylinder barrel 10 produce a compressive strain in axial direction, amount of deformation is Δ L, and now cylinder barrel 10 is in predeformation form; Keep the predeformation state of cylinder barrel 10 constant, on the periphery wall of cylinder barrel 10 in axial direction wound composite to form axial prestress composite layer 61, utilize axial prestress composite layer 61 to pin the compressive strain of cylinder barrel 10, material to be composite unloads axial pressure P after being wound around complete sizing; Last under the off working state of piston cylinder, the axis that cylinder barrel 10 inside can produce a certain size presses prestressing force, and the axis that axial prestress composite layer 61 inside can produce a certain size draws prestressing force.
Preferably, the scope of axial pressure P is 10 to 100 MPas.
When the cylinder barrel 10 being arranged with axial prestress composite layer 61 is subject to Axial Loads, the axial tension stress of axial prestress composite layer 61 draws on prestressed basis in original axis and increases further, and the axis pressure prestressing force of cylinder barrel 10 becomes axial tension stress, thus achieve axial prestress composite layer 61 and bear more thrust load, the high-strength characteristic of axial prestress composite layer 61 is fully used, suitably can reduce the thickness of axial prestress composite layer 61 simultaneously, decrease the weight of composite material.
The conveniently winding of composite material, the periphery wall of cylinder barrel 10 has multiple protruding 11, by Filament Wound Composite on multiple protruding 11.
Prior art be composite material is wrapped in cylinder barrel 10 along the circumferencial direction (i.e. hoop) of cylinder barrel 10 periphery wall on form ring orientation prestress composite layer, and ring orientation prestress composite layer axial load resistant ability is more weak, thus there will be the situation that ring orientation prestress composite layer is separated with cylinder barrel 10 interface layer when cylinder barrel 10 is subject to axial force.
The present invention is designed with protruding 11 on cylinder barrel 10, be used for the axial prestress composite layer 61 that is fastened, thrust load suffered by cylinder barrel 10 is passed to axial prestress composite layer 61, and can prevent cylinder barrel 10 and axial prestress composite layer 61 under the effect of thrust load, interfacial separation occurring.
In the present embodiment, be designed with two groups of projections, wherein one group of projection is arranged on the periphery wall of cylinder bottom 12 place end of cylinder barrel 10, another group is protruding to be arranged on the periphery wall of cylinder mouth place end of cylinder barrel 10, often group projection in two groups of projections includes multiple protruding 11, arrange one week with multiple protruding 11 of group along the circumferencial direction uniform intervals of cylinder barrel 10, composite material can be facilitated along the axial direction winding of cylinder barrel 10 to form axial prestress composite layer 61.
Certainly, layout two groups is not limited to protruding in practical application, also can arrange more than three groups of projections or three groups of projections, but preferably have one group of projection in each end of cylinder barrel 10 at least, the axial prestress composite layer 61 formed to make composite material can cover the more multiple location of cylinder barrel 10.
In addition, composite fiber for the formation of axial prestress composite layer 61 can in axial direction be wrapped in two projections 11 of axially corresponding setting, also can be wrapped in axial two projections 11 staggered, if composite fiber is wrapped in axial two projections 11 staggered, the axial prestress composite layer 61 formed is not absolute axis yet, can bear the hoop load of a part.
Ring orientation prestress composite layer 62 is centered around on axial prestress composite layer 61 and arranges, in order to make cylinder barrel 10 periphery wall produce larger hoop compressive strain and hoop pressure stress, ring orientation prestress composite layer 62 and axial prestress composite layer 61 interference fit.
In conjunction with see Fig. 6, be specially, prefabricated ring orientation prestress composite drum, ring orientation prestress composite drum is by composite material along the circumferential direction (i.e. hoop) sleeve of hollow of being wound, the internal diameter of ring orientation prestress composite drum is less than the external diameter of axial prestress composite layer 61, difference is Δ d, ring orientation prestress composite drum is set on axial prestress composite layer 61 to form ring orientation prestress composite layer 62, and ring orientation prestress composite layer 62 and axial prestress composite layer 61 interference fit, magnitude of interference is Δ d.
Prior art is directly along the circumferential direction wrapped in by composite material on cylinder barrel 10 to form ring orientation prestress composite layer, due to cylinder barrel 10 for steel are made, the rigidity of composite material is much smaller than the rigidity of steel, the composite material fit together does not mate with the rigidity of steel, can cause under identical distortion, the ring orientation prestress composite layer that rigidity is little bears less load, therefore the load born of ring orientation prestress composite layer is limited, the mechanical property of ring orientation prestress composite layer is far from being not fully exerted, in order to ensure intensity and the rigidity of whole cylinder barrel 10, ring orientation prestress composite layer of the prior art must design very thick, waste composite material and add the weight of ring orientation prestress composite layer.
The present invention is by making axial prestress composite layer 61 and ring orientation prestress composite drum interference fit, the cylinder barrel 10 being wound with axial prestress composite layer 61 is made to create certain hoop compressive strain and hoop pressure prestressing force, ring orientation prestress composite drum produces certain hoop and draws prestressing force, when being subject to the pressure fluid effect in its inner chamber when cylinder barrel 10, cylinder barrel 10 circumferentially expands, axial prestress composite layer 61 presses prestressing force to become hoop tensile stress with the hoop suffered by cylinder barrel 10, and the tensile stress of ring orientation prestress composite drum is drawn on prestressed basis at original hoop and is increased further, thus achieve ring orientation prestress composite layer 62 and bear more hoop load.By making axial prestress composite layer 61 and ring orientation prestress composite drum interference fit, the high-strength characteristic of the ring orientation prestress composite layer 62 that ring orientation prestress composite drum is formed is fully used, composite material need not be wound around very thick simultaneously, decreases the weight of ring orientation prestress composite layer 62.
Preferably, the composite material for the formation of axial prestress composite layer 61 is carbon fiber composite or glass fiber compound material, and the composite material for the formation of ring orientation prestress composite layer 62 is carbon fiber composite or glass fiber compound material.The present invention to carbon fiber composite and glass fiber compound material itself without any improvement, the carbon fiber composite adopted and glass fiber compound material are all known composite materials, the present invention just by known materials application in the preparation of axial prestress composite layer 61 and ring orientation prestress composite layer 62.
Because the axial load resistant performance and anti-hoop load performance that are arranged with the cylinder barrel 10 of axial prestress composite layer 61 and ring orientation prestress composite layer 62 are significantly increased, so the wall thickness being coated with this part cylindrical shell of axial prestress composite layer 61 and ring orientation prestress composite layer 62 of cylinder barrel 10 suitably can be reduced, reach the object alleviating cylinder barrel 10 weight.
In order to alleviate the weight of cylinder barrel 10 to greatest extent, first pressure fluid oral area 21 is fixedly welded on the exterior edge face of guide sleeve 30, second pressure fluid oral area 22 is fixedly welded on the exterior edge face of cylinder bottom 12, the periphery wall making the first pressure fluid oral area 21 and the second pressure fluid oral area 22 avoid cylinder barrel 10 is arranged, the periphery wall of cylinder barrel 10 does not have miscellaneous part to interfere, in conjunction with see Fig. 2, the first end of axial prestress composite layer 61 is concordant with the cylinder mouth of cylinder barrel 10, second end of axial prestress composite layer 61 is concordant with the cylinder bottom 12 of cylinder barrel 10, the first end of ring orientation prestress composite layer 62 is concordant with the first end of axial prestress composite layer 61, second end of ring orientation prestress composite layer 62 and second of axial prestress composite layer 61 is held level with both hands together, such axial prestress composite layer 61 can cover the whole periphery wall of cylinder barrel 10, ring orientation prestress composite layer 62 can cover the whole periphery wall of axial prestress composite layer 61, compared in prior art, first pressure fluid oral area 21 and the second pressure fluid oral area 22 are all fixed on the periphery wall of cylinder barrel 10, ring orientation prestress composite layer cannot cover this part barrel of cylinder barrel 10, the wall thickness of this part barrel of cylinder barrel 10 is caused to reduce, the overall wall thickness of cylinder barrel 10 all can reduce, reduce the weight of cylinder barrel 10 to greatest extent.
Present invention also offers a kind of making method of piston cylinder, this piston cylinder is aforesaid piston cylinder, and the method comprises:
S100, axial prestress composite layer 61 is set around the periphery wall of the cylinder barrel 10 of piston cylinder, in order to bear the thrust load suffered by cylinder barrel 10; And
S200, ring orientation prestress composite layer 62 is set around the periphery wall of axial prestress composite layer 61, in order to bear the hoop load suffered by cylinder barrel 10.
Wherein S100, around the periphery wall of the cylinder barrel 10 of piston cylinder, axial prestress composite layer 61 is set, comprise in order to the thrust load of bearing suffered by cylinder barrel 10:
S110, to apply the scope of axial pressure P, P in the both ends of the surface of cylinder barrel 10 be 10 to 100 MPas, and make cylinder barrel 10 produce compressive strain at axial direction, amount of deformation is Δ L;
S120, axial direction wound composite on the periphery wall of cylinder barrel 10 along cylinder barrel 10, namely form axial prestress composite layer 61 after sizing; And
S13, unloading axial pressure P.
Wherein S120, axial direction wound composite on the periphery wall of cylinder barrel 10 along cylinder barrel 10, namely forms axial prestress composite layer 61 and comprises after sizing:
S111, composite material is wrapped on multiple protruding 11 along the axial direction of cylinder barrel 10;
S112, heat treatment form axial prestress composite layer 61.
Wherein S200, around the periphery wall of axial prestress composite layer 61, ring orientation prestress composite layer 62 is set, comprise in order to the hoop load of bearing suffered by cylinder barrel 10:
S210, prefabricated ring orientation prestress composite drum, the internal diameter of ring orientation prestress composite drum is less than the external diameter of described axial prestress composite layer 61, and both differences are Δ d; And
S220, ring orientation prestress composite drum is set in axial prestress composite layer 61 periphery wall on to form ring orientation prestress composite layer 62, ring orientation prestress composite layer 62 and axial prestress composite layer 61 interference fit, magnitude of interference is Δ d.
Wherein S210, prefabricated ring orientation prestress composite drum comprise:
S211, along the circumferential direction wound composite, the complete sizing of Filament Wound Composite forms the ring orientation prestress composite drum of hollow afterwards.
Axial prestress composite layer 61, ring orientation prestress composite layer 62 and cylinder barrel 10 are assembled complete concrete structure schematic diagram shown in Figure 7.
From above description, can find out, the above embodiments of the present invention achieve following technique effect: the periphery wall around cylinder barrel arranges axial prestress composite layer, periphery wall around axial prestress composite layer arranges ring orientation prestress composite layer, wherein axial prestress composite layer is used for bearing the thrust load that cylinder barrel passes over, ring orientation prestress composite layer is used for bearing the hoop load that cylinder barrel passes over, compared in prior art, periphery wall just around cylinder barrel arranges ring orientation prestress composite layer, thrust load is caused almost all to be born by cylinder barrel, technological scheme of the present invention can pass to axial prestress composite layer by the thrust load be subject to by cylinder barrel, the hoop dynamic changes process be subject to by cylinder barrel is to ring orientation prestress composite layer, the thrust load that minimizing cylinder barrel self is born and hoop load, thus improve the axial load resistant of cylinder barrel and the ability of hoop load, available protecting cylinder barrel, avoid it to be damaged.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a piston cylinder, is characterized in that, comprising:
Cylinder barrel (10);
Axial prestress composite layer (61), the periphery wall being centered around described cylinder barrel (10) is arranged, in order to bear the thrust load suffered by described cylinder barrel (10); And
Ring orientation prestress composite layer (62), the periphery wall being centered around described axial prestress composite layer (61) is arranged, in order to bear the hoop load suffered by described cylinder barrel (10);
Described ring orientation prestress composite layer (62) is prefabricated ring orientation prestress composite drum, and described ring orientation prestress composite drum is set on described axial prestress composite layer (61) to form described ring orientation prestress composite layer (62).
2. piston cylinder according to claim 1, is characterized in that,
The periphery wall of described cylinder barrel (10) has multiple projection (11);
Composite material along the axial direction winding of described cylinder barrel (10) on described multiple projection (11) to form described axial prestress composite layer (61).
3. piston cylinder according to claim 2, it is characterized in that, the periphery wall of described cylinder barrel (10) has two groups of projections, lay respectively at the two ends of described cylinder barrel (10), often group projection in described two groups of projections comprises described multiple projection (11), and described multiple projection (11) is arranged along the peripheral direction uniform intervals of described cylinder barrel (10).
4. piston cylinder according to claim 1, is characterized in that, described ring orientation prestress composite drum and described axial prestress composite layer (61) interference fit.
5. piston cylinder according to claim 1, is characterized in that,
The composite material forming described axial prestress composite layer (61) is carbon fiber composite or glass fiber compound material;
The composite material forming described ring orientation prestress composite layer (62) is carbon fiber composite or glass fiber compound material.
6. piston cylinder according to claim 1, is characterized in that, described piston cylinder also comprises:
Guide sleeve (30), is fixed on the cylinder mouth place of described cylinder barrel (10);
First pressure fluid oral area (21), is fixed on the exterior edge face of described guide sleeve (30), and is connected with the rod chamber of piston cylinder; And
Second pressure fluid oral area (22), is fixed on the exterior edge face of cylinder bottom (12) of described cylinder barrel (10), and is connected with the rodless cavity of described piston cylinder;
The first end of described axial prestress composite layer (61) is concordant with the described cylinder mouth of described cylinder barrel (10), and the second end of described axial prestress composite layer (61) is concordant with the described cylinder bottom (12) of described cylinder barrel (10);
The first end of described ring orientation prestress composite layer (62) is concordant with the first end of described axial prestress composite layer (61), and the second end of described ring orientation prestress composite layer (62) and second of described axial prestress composite layer (61) is held level with both hands together.
7. a making method for piston cylinder, is characterized in that, comprises the following steps:
Periphery wall around the cylinder barrel (10) of piston cylinder arranges axial prestress composite layer (61), in order to bear the thrust load suffered by described cylinder barrel (10); And
Periphery wall around described axial prestress composite layer (61) arranges ring orientation prestress composite layer (62), in order to bear the hoop load suffered by described cylinder barrel (10);
The described periphery wall around described axial prestress composite layer (61) arranges ring orientation prestress composite layer (62), comprises the following steps in order to the hoop load of bearing suffered by described cylinder barrel (10):
Prefabricated ring orientation prestress composite drum, the internal diameter of described ring orientation prestress composite drum is less than the external diameter of described axial prestress composite layer (61); And
To form described ring orientation prestress composite layer (62) on the periphery wall described ring orientation prestress composite drum being set in described axial prestress composite layer (61), described ring orientation prestress composite layer (62) and described axial prestress composite layer (61) interference fit.
8. the making method of piston cylinder according to claim 7, it is characterized in that, the periphery wall of the described cylinder barrel around piston cylinder (10) arranges axial prestress composite layer (61), comprises the following steps in order to the thrust load of bearing suffered by described cylinder barrel (10):
Axial pressure is applied in the both ends of the surface of described cylinder barrel (10);
Along the axial direction of described cylinder barrel (10) on the periphery wall of described cylinder barrel (10) wound composite to form described axial prestress composite layer (61); And
Unload described axial pressure.
9. the making method of piston cylinder according to claim 8, is characterized in that,
The periphery wall of described cylinder barrel (10) has two groups of projections, lay respectively at the two ends of described cylinder barrel (10), often group projection in described two groups of projections comprises multiple projection (11), and described multiple projection (11) is arranged along the peripheral direction uniform intervals of described cylinder barrel (10);
The described axial direction along described cylinder barrel (10) wound composite on the periphery wall of described cylinder barrel (10) comprises the following steps to form described axial prestress composite layer (61):
The axial direction of described composite material along described cylinder barrel (10) is wrapped in described two groups of projections to form described axial prestress composite layer (61).
10. the making method of piston cylinder according to claim 8, is characterized in that, the described both ends of the surface at described cylinder barrel (10) apply axial pressure and comprise the following steps:
The axial pressure of 10 to 100 MPas is applied in the both ends of the surface of described cylinder barrel (10).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310412340.0A CN103470755B (en) | 2013-09-11 | 2013-09-11 | Piston cylinder and manufacturing method thereof |
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| CN201310412340.0A CN103470755B (en) | 2013-09-11 | 2013-09-11 | Piston cylinder and manufacturing method thereof |
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| CN103470755A CN103470755A (en) | 2013-12-25 |
| CN103470755B true CN103470755B (en) | 2015-12-23 |
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| 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 |
| EP4261385A1 (en) * | 2023-01-24 | 2023-10-18 | DWL Baumaschinen AG | Straightening press unit for a trenchless line construction |
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| US4867044A (en) * | 1984-11-26 | 1989-09-19 | The United States Of America As Represented By The Secretary Of The Navy | Jam resistant fluid power actuator for ballistic-damage tolerant redundant cylinder assemblies |
| US4700868A (en) * | 1986-03-28 | 1987-10-20 | Pneumo Abex Corporation | Composite pressure vessel including fluid port with replaceable seal in composite sidewall structure and method of constructing such fluid port |
| DE19649133C1 (en) * | 1996-11-27 | 1998-03-05 | Dornier Gmbh | Hydraulic cylinder |
| JP2011112110A (en) * | 2009-11-25 | 2011-06-09 | Tokyo Institute Of Technology | Actively curving tube actuator and actively surveying device |
| CN102705293B (en) * | 2012-06-14 | 2014-04-09 | 中联重科股份有限公司 | Cylinder body of actuating cylinder, manufacturing method thereof and concrete pumping equipment |
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2013
- 2013-09-11 CN CN201310412340.0A patent/CN103470755B/en active Active
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