Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
  • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
  • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
  • F15B15/08—Characterised by the construction of the motor unit
  • F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
  • F15B15/1423—Component parts; Constructional details
  • F15B15/1428—Cylinders
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
  • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
  • F04B15/00—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts
  • F04B15/02—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts the fluids being viscous or non-homogeneous
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
  • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
  • F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
  • F04B9/08—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
  • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
  • F05C2253/00—Other material characteristics; Treatment of material
  • F05C2253/04—Composite, e.g. fibre-reinforced
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
  • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
  • F05C2253/00—Other material characteristics; Treatment of material
  • F05C2253/20—Resin
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
  • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
  • F15B2215/00—Fluid-actuated devices for displacing a member from one position to another
  • F15B2215/30—Constructional details thereof
  • F15B2215/305—Constructional details thereof characterised by the use of special materials

Definitions

• the present invention relates to the field of actuating cylinders, and in particular to a cylinder for actuating cylinders and a method of manufacturing the same, and to a concrete pumping apparatus having the cylinder. Background technique
• Actuating cylinders typically include hydraulic cylinders and cylinders, which are used in a wide variety of applications.
• a concrete pumping device e.g., a concrete pump truck
• a hydraulic cylinder for driving the reciprocating motion of the cylinder to convey concrete.
• more and more concrete transportation work is carried out by concrete pump trucks during the action of concrete.
• engineering operations require the concrete to be transported to a higher and further distance.
• the materials selected for the boom, hydraulic cylinder and other components of the concrete machinery are moving toward light and high strength.
• the cylinder block of the existing hydraulic cylinder is made of a single alloy steel material.
• An object of the present invention is to provide a cylinder for actuating a cylinder which is stronger in strength, lighter in weight, better in fatigue resistance and corrosion resistance, and less in thermal expansion, thereby enabling the actuating cylinder to Get a wider range of applications.
• Another object of the present invention is to provide a method of manufacturing a cylinder block of the brake cylinder.
• the present invention provides a cylinder for actuating a cylinder, wherein the cylinder includes an inner liner layer and a first fiber composite material layer bonded to the exterior of the inner liner layer, A fiber composite layer is a composite of a first fiber material and a matrix resin.
• the present invention also provides a concrete pumping apparatus, wherein the cylinder of the pumping cylinder of the concrete pumping apparatus is a cylinder of the actuating cylinder as described above.
• the present invention provides a method of manufacturing a cylinder of an actuating cylinder, wherein the method comprises: forming an inner liner layer: forming an inner liner layer; and combining steps: using the first fiber material and the matrix The resin forms a first fiber composite layer and bonds the first fiber composite layer to the exterior of the inner liner.
• the cylinder of the actuating cylinder comprises an inner liner layer and a first fiber composite material layer, and the fiber composite material is lighter in weight under the same strength than the existing metal material, and is resistant to fatigue and resistance.
• the corrosive property is good and the thermal expansion property is small, so that the cylinder of the actuating cylinder can be made stronger, lighter in weight, better in fatigue resistance and corrosion resistance, and less in thermal expansion, thereby making the actuating cylinder Can get a wider range of applications.
• the inner liner of the cylinder can satisfy the sealing property of the inner wall of the cylinder and the wear resistance of the contact with the piston, the performance of the cylinder is not affected.
• FIG. 1 is a schematic cross-sectional view of a cylinder block of an actuating cylinder according to an embodiment of the present invention
• FIG. 2 is a partially enlarged schematic view of a portion A of FIG.
• Figure 3 is a schematic view showing the overall structure of the inner liner of the cylinder of the actuating cylinder shown in Figure 1. Description of the reference numerals
• I inner liner first fiber composite layer
• an embodiment of the present invention provides a cylinder for actuating a cylinder, wherein the cylinder includes an inner liner 1 and an outer portion bonded to the outer layer 1 A fiber composite layer 2.
• the cylinder of the actuating cylinder comprises the inner liner layer 1 and the first fiber composite material layer 2, and the fiber composite material is lighter in weight and fatigue resistance at the same strength as the existing metal material. It has better corrosion resistance and less thermal expansion, so the cylinder of the actuating cylinder can be made stronger, lighter in weight, better in fatigue resistance and corrosion resistance, and less in thermal expansion. Cylinders can be used in a wider range of applications.
• the inner liner of the cylinder can satisfy the sealing property of the inner wall of the cylinder and the wear resistance of the piston, it does not affect the performance of the cylinder.
• the inner liner 1 may be made of various suitable materials capable of satisfying the requirements of the sealing property of the inner wall of the cylinder and the wear resistance of the contact with the piston, and for example, a metal material which is conventionally used for manufacturing a cylinder can be used. production.
• the fiber composite material mentioned in the present invention refers to a material composed of a fiber material and a matrix resin. Material, that is, fiber reinforced resin composite.
• the first fiber composite material layer 2 may be made by combining various suitable fiber materials with a matrix resin, and the fiber material may be selected, for example, from one of glass fiber, aramid fiber, ultra high molecular weight polyethylene fiber, and carbon fiber. Or more.
• the first fiber composite material layer 2 is made of a carbon fiber material and a matrix resin.
• Carbon fiber composites have a series of advantages such as light weight, high strength, high stiffness, excellent vibration damping, fatigue resistance and corrosion resistance.
• the carbon fiber material may be combined with various matrix resins to form a carbon fiber composite material, and the base resin may be, for example, an unsaturated polyester, a vinyl resin, a phenol resin or the like, and preferably a ring having better processability, high strength and good toughness.
• Oxygen resin system Among the fiber materials for forming the first fiber composite material layer 2, some are conductive materials, some are non-conductive materials, and when the inner liner layer 1 and the first fiber composite material layer 2 are made of a conductive material (for example, when the inner liner 1 is made of a metal material and the first fiber composite layer is made of a carbon fiber composite material, preferably, an insulating layer is further disposed between the inner liner layer 1 and the first fiber composite material layer 2. 3. Thereby, electrochemical corrosion between the inner liner layer 1 and the first fiber composite material layer 2 can be prevented, and the life of the cylinder of the actuating cylinder is prolonged.
• the insulating layer 3 may be made of various suitable insulating materials, for example, one or more selected from the group consisting of glass fibers, aramid fibers, ultrahigh molecular weight polyethylene fibers, and basalt fibers.
• the insulating layer 3 can be adhered to the inner liner 1 by, for example, a high tenacity adhesive.
• a second fiber composite material layer 4 is disposed outside the first fiber composite material layer 2.
• the second fiber composite layer 4 helps to improve the performance of the cylinder against external impact.
• the second fiber composite layer 4 may be formed using various suitable fiber materials and a matrix resin, which may be selected, for example, from one or more of glass fibers, aramid fibers, ultra high molecular weight polyethylene fibers, and basalt fibers. .
• the matrix resins of the first fiber composite material layer 2 and the second fiber composite material layer 4 may be the same or different.
• the present invention does not relate to a change in the overall shape of the cylinder of the actuating cylinder, that is, the overall shape of the cylinder of the actuating cylinder may be the same as that of the conventional actuating cylinder, and may be substantially Hollow cylindrical shape, and at both ends are provided with connecting threads and/or oil ports, etc., wherein the connecting threads It is mainly used to connect with the end cover of the actuating cylinder, and the oil port is mainly used for connecting with the working oil passage of the actuating cylinder, so that the working oil passage is in communication with the working chamber in the cylinder body.
• the main point of the present invention is to divide the cylinder into a plurality of material layers, thereby improving the strength of the cylinder, reducing the weight, improving corrosion resistance and fatigue resistance, and reducing thermal expansion.
• the plurality of material layers of the cylinder (for example, the inner liner layer 1, the first fiber composite material layer 2, the insulating layer 3, and the second fiber composite material layer 4) may each have a uniform thickness or a non-uniform thickness.
• the inner liner 1 is substantially cylindrical, and includes an intermediate portion 11 and two end portions 12 respectively located at two sides of the intermediate portion 11, the thickness of the intermediate portion 11 Less than the thickness of the end portion 12.
• the intermediate portion 11 and the two end portions 12 are arranged substantially in the axial direction of the cylinder block, and the inner liner layer 1 substantially forms a structure with two large heads and a small middle portion, which is advantageous for processing and setting the inlet and outlet, and for the middle of the two end portions 12
• the fiber composite formed outside the portion 11 has a certain fixing effect.
• each of the end portions 12 and the intermediate portion 11 further has a transition portion 13, and the thickness of the transition portion 13 transitions from the thickness of the end portion 12 to the thickness of the intermediate portion 11.
• the end portion 12 of the inner liner 1 is provided with oil ports and/or connecting threads
• the first fiber composite material layer 2 is disposed at the intermediate portion 11 and the transition portion 13 of the inner liner layer 1. external.
• the oil port and/or the connecting thread of the cylinder block can be formed on the end portion 12 as needed, and the oil port and/or the connecting thread are not used by the first fiber composite material layer 2, the insulating layer 3 and the second fiber composite material.
• Layer 4 (if any) is covered so that the cylinder is more manufacturable and does not require layers of material other than the inner liner 1 (eg, first fiber composite layer 2, insulating layer 3, and second fiber composite)
• the material layer 4) is additionally machined with oil ports and/or connecting threads.
• the transition portion 13 may have a slope shape in which the thickness gradually transitions uniformly, or a step shape in which the thickness gradually transitions in stages, or may be other suitable shapes. More preferably, as shown in FIGS. 1 to 3, the transition portion 13 includes a slope portion 131 and a boss portion 132 disposed on the slope portion 131, the thickness of the slope portion 131 being from the end portion 12 The thickness gradually and evenly transitions to the thickness of the intermediate portion 11.
• the raised portion 132 facilitates the inner liner 1 and other material layers (eg, the first fiber composite)
• the combination of the material layers 2) enhances the bonding force and prevents the inner liner layer 1 from being separated from other material layers.
• the raised portion 132 may be formed as one or more continuous rings of protrusions (as shown in FIG. 3 as a continuous ring), and may of course be discrete plurality of bumps or ridges or the like.
• the present invention also provides a concrete pumping apparatus, wherein the cylinder of the pumping cylinder of the concrete pumping apparatus is a cylinder of the actuating cylinder as described above.
• the present invention provides a method of manufacturing a cylinder of an actuating cylinder, wherein the method comprises: forming an inner liner layer: forming an inner liner layer 1; and combining steps: using the first fiber material and The base resin forms the first fiber composite layer 2 and bonds the first fiber composite layer 2 to the outside of the inner liner 1.
• the cylinder of the actuating cylinder comprises the inner liner layer 1 and the first fiber composite material layer 2, and the fiber composite material is lighter in weight and fatigue resistance at the same strength as the existing metal material. It has better corrosion resistance and less thermal expansion, so the cylinder of the actuating cylinder can be made stronger, lighter in weight, better in fatigue resistance and corrosion resistance, and less in thermal expansion. Cylinders can be used in a wider range of applications.
• the inner liner of the cylinder can satisfy the sealing property of the inner wall of the cylinder and the wear resistance of the piston, it does not affect the performance of the cylinder.
• the inner liner 1 may be made of various suitable materials capable of satisfying the requirements of the sealing property of the inner wall of the cylinder and the wear resistance of the contact with the piston, and for example, a metal material which is conventionally used for manufacturing a cylinder can be used. production.
• the first fiber composite material layer 2 may be made by combining various suitable fiber materials with a matrix resin, and the fiber material may be selected, for example, from one of glass fiber, aramid fiber, ultra high molecular weight polyethylene fiber, and carbon fiber. Or more.
• the first fiber composite material layer 2 is formed using carbon fibers and a matrix resin.
• Carbon fiber composites have a series of advantages such as light weight, high strength, high stiffness, excellent vibration damping, fatigue resistance and corrosion resistance.
• the carbon fiber material may be combined with various matrix resins to form a carbon fiber composite material, and the base resin may be, for example, an unsaturated polyester, a vinyl resin, a phenol resin, or the like, and preferably has a good processability.
• the fiber materials for forming the first fiber composite material layer 2 some are conductive materials, some are non-conductive materials, preferably, in the step of forming the inner liner layer, through a conductive material (for example, a metal material, More specifically, for example, 27SiMn) forms the inner liner layer 1; in the bonding step, the first fiber composite material layer 2 is formed by a conductive material (for example, a carbon fiber composite material); and the manufacturing method further includes forming Insulating layer step: Before the bonding step, an insulating layer 3 is formed outside the inner liner layer 1 such that the insulating layer 3 is located between the inner liner layer 1 and the first fiber composite material layer 2.
• a conductive material for example, a metal material, More specifically, for example, 27SiMn
• the manufacturing method further includes forming Insulating layer step: Before the bonding step, an insulating layer 3 is formed outside the inner liner layer 1 such that the insulating layer 3 is located between the inner liner layer 1 and the first fiber composite material layer 2.
• the insulating layer 3 may be made of various suitable insulating materials, for example, one or more selected from the group consisting of glass fibers, aramid fibers, ultra high molecular weight polyolefin fibers, and basalt fibers.
• the insulating layer can be formed, for example, by coating a fibrous material cloth (for example, a glass fiber cloth) on the outside of the inner liner 1.
• the insulating layer 3 can be adhered to the inner liner 1 by, for example, a high tenacity adhesive.
• the first fiber composite material layer may be formed and bonded in various suitable manners.
• the bundled first fiber material impregnated with the matrix resin is wound therein by a wet winding process.
• the continuous first fiber may be impregnated with the liquid epoxy resin, and then wound around the fixed inner liner 1 through a winding machine to complete the winding of the fiber.
• the product obtained by wet-wound forming can fully utilize the characteristics of the composite material, so that the product can obtain the required structural properties to the utmost, and the molding cost is low, and the process is relatively simple.
• the angle between the extending direction of the bundle of the first fiber composite material and the axial direction of the cylinder is 70° to 90°. That is, the first fiber composite material has a winding angle of 70° to 90°. Since the radial force of the cylinder is usually 2-3 times of the circumferential force, the winding angle can increase the radial strength of the cylinder, that is, improve the mechanical properties of the cylinder, and reduce the overall thickness of the cylinder. The body provides good fatigue resistance.
• the manufacturing method further comprises: forming outside the first fiber composite layer 2 Second fiber composite layer 4.
• the second fiber composite layer 4 helps to improve the performance of the cylinder against external impact.
• the second fiber composite layer 4 may be formed by combining various suitable fiber materials and a matrix resin, and may be selected, for example, from one or more of glass fibers, aramid fibers, ultrahigh molecular weight polyethylene fibers, and basalt fibers.
• a second fibrous material cloth may be coated on the outside of the first fiber composite material layer 2, and the matrix resin in the first fiber composite material layer 2 may be infiltrated into the second fiber material cloth to form The second fiber composite layer 4.
• the present invention does not relate to a change in the overall shape of the cylinder of the actuating cylinder, that is, the overall shape of the cylinder of the actuating cylinder may be the same as that of the conventional actuating cylinder, and may be substantially It has a hollow cylindrical shape and is provided with connecting threads and/or ports at both ends.
• the main point of the present invention is to divide the cylinder into a plurality of material layers, thereby improving the strength of the cylinder, reducing the weight, and improving corrosion resistance and fatigue resistance, and reducing thermal expansion.
• the plurality of material layers of the cylinder may each have a uniform thickness or a non-uniform thickness.
• the step of forming an inner liner comprises: providing a substantially hollow cylindrical liner blank; and a machining process: thinning a portion of the thickness of the liner blank by machining (eg, turning)
• the inner liner 1 is formed to include an intermediate portion 11 and two end portions 12 respectively located on both sides of the intermediate portion 11, the intermediate portion 11 having a thickness smaller than the thickness of the end portion 12.
• the intermediate portion 11 and the two end portions 12 are arranged substantially in the axial direction of the cylinder block, and the inner liner layer 1 substantially forms a structure with two large heads and a small middle portion, which is advantageous for processing and setting the inlet and outlet, and for the middle of the two end portions 12
• the fiber composite formed outside the portion 11 has a certain fixing effect.
• a transition portion 13 is also formed between each of the end portions 12 and the intermediate portion 11, and the thickness of the transition portion 13 is changed from the thickness of the end portion 12 To the thickness of the intermediate portion 11.
• an oil port and/or a connecting thread is also formed at the end portion 12 of the inner liner 1; in the joining step, the first fiber composite material is The layer 2 is bonded to the outside of the intermediate portion 11 and the transition portion 13 of the inner liner 1.
• the oil port and/or the connecting thread of the cylinder block can be formed on the end portion 12 as needed, and the oil port and/or the connecting thread are not used by the first fiber composite material layer 2, the insulating layer 3 and the second fiber composite material.
• Layer 4 (if any) is covered so that the cylinder is more manufacturable and does not require layers of material other than the inner liner 1 (eg, first fiber composite layer 2, insulating layer 3, and second fiber composite)
• the material layer 4) is additionally machined with oil ports and/or connecting threads.
• the transition portion 13 may have a slope shape in which the thickness gradually transitions uniformly, or a step shape in which the thickness gradually transitions in stages, or may be other suitable shapes.
• the transition portion 13 is further formed to include a slope portion 131 and a boss portion 132 disposed on the slope portion 131, the thickness of the slope portion 131 being from the end portion The thickness of 12 gradually and evenly transitions to the thickness of the intermediate portion 11.
• the raised portion 132 facilitates the bonding of the inner liner 1 to other material layers (e.g., the first fiber composite layer 2), improves the bonding force, and prevents the inner liner 1 from separating from other material layers.
• the raised portion 132 may be formed as one or more continuous rings of protrusions (shown as a continuous ring as shown in Fig. 3), and may of course be discrete plurality of bumps or ribs or the like.
• the step of forming the inner liner further comprises: a sandblasting process of sandblasting the outer surface of the inner liner 1 formed in the machining process to improve the outer surface of the inner liner 1 Roughness.
• a sandblasting process of sandblasting the outer surface of the inner liner 1 formed in the machining process to improve the outer surface of the inner liner 1 Roughness.
• An inner liner 1 as shown in Fig. 3 is formed by machining.
• the first fiber composite layer 2 is formed in a wound manner.
• the glass fiber cloth is coated on the outside of the first fiber composite material layer 2, and the matrix resin in the first fiber composite material layer 2 is immersed in the glass fiber cloth to form the second fiber composite material layer 4.
• the cylinder of the above actuating cylinder and the manufacturing method thereof can be applied to various actuating cylinders, including hydraulic cylinders, cylinders, etc., and the cylinder can be widely used, for example, as a concrete pump truck, a crane, an excavator, a fire truck, and a high-altitude operation.
• the cylinder of the actuating cylinder in various construction machinery such as cars and sanitation machines.

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Physics & Mathematics (AREA)
• Fluid Mechanics (AREA)
• Pistons, Piston Rings, And Cylinders (AREA)
• Actuator (AREA)
• Laminated Bodies (AREA)
• Cylinder Crankcases Of Internal Combustion Engines (AREA)

Priority Applications (2)

Applications Claiming Priority (2)

Publications (1)

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Citations (8)

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• 2012
  • 2012-06-14 CN CN201210195986.3A patent/CN102705293B/zh active Active
  • 2012-12-07 WO PCT/CN2012/086108 patent/WO2013185451A1/zh not_active Ceased
  • 2012-12-07 IN IN740KON2014 patent/IN2014KN00740A/en unknown
  • 2012-12-07 EP EP12878834.6A patent/EP2749776A1/en not_active Withdrawn

Patent Citations (8)

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