CN113909807A - Production process of annular hydraulic cylinder for jacking bridge and building - Google Patents
Production process of annular hydraulic cylinder for jacking bridge and building Download PDFInfo
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- CN113909807A CN113909807A CN202111117989.0A CN202111117989A CN113909807A CN 113909807 A CN113909807 A CN 113909807A CN 202111117989 A CN202111117989 A CN 202111117989A CN 113909807 A CN113909807 A CN 113909807A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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- 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
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- 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
- F15B15/20—Other details, e.g. assembly with regulating devices
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/35—Extraordinary methods of construction, e.g. lift-slab, jack-block
- E04B2001/3588—Extraordinary methods of construction, e.g. lift-slab, jack-block using special lifting or handling devices, e.g. gantries, overhead conveying rails
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Abstract
The application discloses a production process of an annular hydraulic cylinder for jacking bridges and buildings, which is used for solving the production problem of the annular hydraulic cylinder in the field of bridges and buildings. Wherein, a production technology that is used for jacking annular pneumatic cylinder of bridge and building includes: according to the pressure-bearing parameters of an annular hydraulic cylinder to be used in a target construction environment, selecting and processing steel materials to obtain a first annular vertical plate which is in accordance with preset sizes and is used for the inner wall of a cylinder body of an annular cylinder body, a second annular vertical plate which is used for the outer wall of the cylinder body of the annular cylinder body, a first bottom plate which is used for the bottom of the cylinder body of the annular cylinder body, a third annular vertical plate which is used for the inner wall of a piston of an annular piston, a fourth annular vertical plate which is used for the outer wall of the piston of the annular piston, a second bottom plate which is used for the bottom of the piston of the annular piston and a rib plate which is used for reinforcing the structure between the third annular vertical plate, the fourth annular vertical plate and the second bottom plate; and respectively welding, heat treating and machining to obtain the annular hydraulic cylinder. The production steps and the operation are simple, and the production cost is effectively reduced.
Description
Technical Field
The application relates to the technical field of manufacturing of bridges and building construction equipment, in particular to a production process of an annular hydraulic cylinder for jacking bridges and buildings.
Background
In the independent column work progress of bridge and building, whether need detect the post displacement qualified, place a plurality of hydraulic means this moment at the independent column periphery, each point is all through suppressing and post interact, all is provided with the sensor in each point and carries out data measurement. An annular hydraulic cylinder has been invented to solve the above problems.
In the process of realizing the prior art, the inventor finds that:
because the annular hydraulic cylinder is used in the field of bridge and building construction, the traditional production method can not ensure that the compression-resistant grade of the annular hydraulic cylinder reaches the design standard, and meanwhile, the production cost is higher.
Therefore, it is necessary to provide a production process of an annular hydraulic cylinder for jacking bridges and buildings, so as to solve the technical problems of high production cost and incapability of achieving the compression resistance level.
Disclosure of Invention
The embodiment of the application provides a production process of an annular hydraulic cylinder for jacking bridges and buildings, which is used for solving the technical problems that the production cost is high and the compression-resistant grade cannot be achieved.
Specifically, the production process of the annular hydraulic cylinder for jacking bridges and buildings comprises the following specific steps:
determining finished product parameters of an annular cylinder body and an annular piston of the annular hydraulic cylinder according to the pressure-bearing parameters of the annular hydraulic cylinder to be used in the target construction environment;
according to the finished product parameters, selecting and processing steel materials to obtain a first annular vertical plate which is used for the inner wall of the cylinder body of the annular cylinder body and accords with preset sizes, a second annular vertical plate which is used for the outer wall of the cylinder body of the annular cylinder body, a first bottom plate which is used for the bottom of the cylinder body of the annular cylinder body, a third annular vertical plate which is used for the inner wall of the piston of the annular piston, a fourth annular vertical plate which is used for the outer wall of the piston of the annular piston, a second bottom plate which is used for the bottom of the piston of the annular piston and a rib plate which is used for reinforcing structures among the third annular vertical plate, the fourth annular vertical plate and the second bottom plate;
respectively welding the first annular vertical plate, the second annular vertical plate, the third annular vertical plate, the fourth annular vertical plate, the first bottom plate, the second bottom plate and the rib plate to obtain a blank annular cylinder body and a blank annular piston;
according to the finished product parameters, carrying out heat treatment on the blank annular cylinder body and the blank annular piston to obtain a semi-finished product annular cylinder body and a semi-finished product annular piston;
and machining the semi-finished annular cylinder body and the semi-finished annular piston according to the finished product parameters to obtain the annular hydraulic cylinder.
Further, according to the pressure-bearing parameter of the annular hydraulic cylinder to be used in the target construction environment, the finished product parameters of the annular cylinder body and the annular piston of the annular hydraulic cylinder are determined, and the method comprises the following specific steps:
calculating the support diameter, the piston stroke and the limiting pressure of the annular hydraulic cylinder according to the pressure-bearing parameters of the annular hydraulic cylinder to be used in the target construction environment;
calculating the size of the annular hydraulic cylinder according to the support diameter, the piston stroke and the limiting pressure, and analyzing the adopted materials;
and determining finished product parameters of the annular cylinder body and the annular piston of the annular hydraulic cylinder according to the size and the material.
Further, according to the parameters of the finished product, selecting and processing a steel material to obtain a first annular vertical plate which is used for the inner wall of the annular cylinder body and accords with preset dimensions, a second annular vertical plate which is used for the outer wall of the annular cylinder body, a first bottom plate which is used for the bottom of the annular cylinder body, a third annular vertical plate which is used for the inner wall of the piston of the annular piston, a fourth annular vertical plate which is used for the outer wall of the piston of the annular piston, a second bottom plate which is used for the bottom of the piston of the annular piston, and a rib plate which is used for reinforcing the structures among the third annular vertical plate, the fourth annular vertical plate and the second bottom plate, wherein the method comprises the following specific steps:
selecting a bottom plate steel material, a vertical plate steel material and a rib plate steel material according to the finished product parameters, and determining processing parameters;
when the vertical plate steel material is selected to customize the seamless steel pipe, selecting a first-diameter seamless steel pipe for the inner wall of the cylinder body of the annular cylinder body, a second-diameter seamless steel pipe for the outer wall of the cylinder body of the annular cylinder body, a third-diameter seamless steel pipe for the inner wall of the piston of the annular piston and a fourth-diameter seamless steel pipe for the outer wall of the piston of the annular piston;
cutting the first-pipe-diameter seamless steel pipe, the second-pipe-diameter seamless steel pipe, the third-pipe-diameter seamless steel pipe and the fourth-pipe-diameter seamless steel pipe according to the processing parameters to obtain a first annular vertical plate which is in accordance with a preset size and is used for the inner wall of the annular cylinder body, a second annular vertical plate which is in accordance with a preset size and is used for the outer wall of the annular cylinder body, a third annular vertical plate which is in accordance with a preset size and is used for the inner wall of the annular piston, and a fourth annular vertical plate which is in accordance with a preset size and is used for the outer wall of the annular piston;
cutting the bottom plate steel material according to the processing parameters to obtain a first bottom plate which is used for the bottom of the cylinder body of the annular cylinder body and a second bottom plate which is used for the bottom of the piston of the annular piston, and the first bottom plate and the second bottom plate are in accordance with preset sizes;
and cutting the rib plate steel material according to the processing parameters to obtain the rib plates which are in accordance with the preset size and used for reinforcing the structures among the third annular vertical plate, the fourth annular vertical plate and the second bottom plate.
Further, according to the parameters of the finished product, selecting and processing a steel material to obtain a first annular vertical plate which is used for the inner wall of the annular cylinder body and accords with preset dimensions, a second annular vertical plate which is used for the outer wall of the annular cylinder body, a first bottom plate which is used for the bottom of the annular cylinder body, a third annular vertical plate which is used for the inner wall of the piston of the annular piston, a fourth annular vertical plate which is used for the outer wall of the piston of the annular piston, a second bottom plate which is used for the bottom of the piston of the annular piston, and a rib plate which is used for reinforcing the structures among the third annular vertical plate, the fourth annular vertical plate and the second bottom plate, wherein the method comprises the following specific steps:
selecting a bottom plate steel material, a vertical plate steel material and a rib plate steel material according to the finished product parameters, and determining processing parameters;
when the vertical plate steel material is selected to be a customized steel plate, determining the thickness of the steel plate and cutting the vertical plate steel material according to the processing parameters to obtain a first rectangular steel plate used for the inner wall of the cylinder body of the annular cylinder body, a second rectangular steel plate used for the outer wall of the cylinder body of the annular cylinder body, a third rectangular steel plate used for the inner wall of the piston of the annular piston and a fourth rectangular steel plate used for the outer wall of the piston of the annular piston;
the first rectangular steel plate, the second rectangular steel plate, the third rectangular steel plate and the fourth rectangular steel plate are curled to form a first coiling vertical plate, a second coiling vertical plate, a third coiling vertical plate and a fourth coiling vertical plate which are annular;
welding seams at the closed positions of the circular rings of the first, second, third and fourth rolling vertical plates to obtain a first annular vertical plate which is in accordance with a preset size and is used for the inner wall of the annular cylinder body, a second annular vertical plate which is in accordance with a preset size and is used for the outer wall of the annular cylinder body, a third annular vertical plate which is used for the inner wall of the annular piston and a fourth annular vertical plate which is used for the outer wall of the annular piston;
cutting the bottom plate steel material according to the processing parameters to obtain a first bottom plate which is used for the bottom of the cylinder body of the annular cylinder body and a second bottom plate which is used as the bottom of the piston of the annular piston, and the first bottom plate and the second bottom plate are in accordance with preset sizes;
and cutting the rib plate steel material according to the processing parameters to obtain the rib plates which are in accordance with the preset size and used for reinforcing the structures among the third annular vertical plate, the fourth annular vertical plate and the second bottom plate.
Further, the first bottom plate and the second bottom plate can be prepared by the following method:
and forging the bottom plate steel material according to the processing parameters to obtain a first bottom plate used for the bottom of the cylinder body of the annular cylinder body and a second bottom plate used for the bottom of the piston of the annular piston.
Further, weld first annular riser, second annular riser, third annular riser, fourth annular riser, first bottom plate, second bottom plate and gusset respectively, obtain blank annular cylinder body and blank annular piston, include following specific steps:
respectively and vertically welding the first annular vertical plate and the second annular vertical plate on the inner side edge and the outer side edge of the first bottom plate to obtain a blank annular cylinder body;
respectively and vertically welding the third annular vertical plate and the fourth annular vertical plate to the inner side edge and the outer side edge of the second bottom plate;
and simultaneously and vertically welding the rib plates to the second bottom plate, the third annular vertical plate and the fourth annular vertical plate to obtain the blank annular piston.
Further, the method also comprises the following steps:
a fixed column with the length being larger than the maximum running distance of the annular piston is vertically arranged between the first annular vertical plate and the second annular vertical plate of the first bottom plate;
welding an inner angle at the joint of the first bottom plate and the first annular vertical plate and the second annular vertical plate to form an arc;
and calculating the R angle of the arc according to a stress calculation model.
Furthermore, an annular ring for processing a chamfer is welded on the outer side of the bottom plate of the blank annular piston.
Further, according to the finished product parameters, the blank annular cylinder body and the blank annular piston are subjected to heat treatment to obtain a semi-finished product annular cylinder body and a semi-finished product annular piston, and the method comprises the following specific steps of:
setting the peak temperature, the linear heating time, the peak temperature holding time and the cooling time of the heat treatment according to the parameters of the finished product;
linearly heating the blank annular cylinder body and the blank annular piston to the peak temperature according to the peak temperature and the linear heating time, and keeping the time for heat preservation according to the peak temperature to obtain a heat treatment annular cylinder body and a heat treatment annular piston;
and after the heat preservation time reaches the peak temperature holding time, cooling the heat treatment annular cylinder body and the heat treatment annular piston according to the cooling time to obtain a semi-finished annular cylinder body and a semi-finished annular piston.
Further, according to the finished product parameters, machining the semi-finished product annular cylinder body and the semi-finished product annular piston to obtain an annular hydraulic cylinder, and the method comprises the following specific steps:
setting machining parameters according to the finished product parameters;
grinding the semi-finished annular cylinder body according to the machining parameters to obtain a finished annular cylinder body;
according to the machining parameters, a plurality of annular grooves used for installing seals are machined on the outer side of the third annular vertical plate and the outer side of the fourth annular vertical plate respectively, and chamfers are machined on the annular rings to obtain finish machining annular pistons;
according to the machining parameters, drilling through holes for hydraulic fluid injection and discharge on an annular bottom plate of the finish machining annular piston, and drilling positioning holes which penetrate through the annular bottom plate and enter a rib plate and are matched with the fixing columns to obtain a finished annular piston;
assembling the finished annular cylinder body and the finished annular piston to obtain an annular hydraulic cylinder;
the annular part between the annular cylinder body and the annular piston of the annular hydraulic cylinder forms a closed space;
the annular piston is arranged between the inner ring and the outer ring of the annular cylinder body, moves relative to the annular cylinder body and is used for supporting a bridge and a building strut;
the closed space is used for storing hydraulic liquid;
the annular piston moves relative to the annular cylinder body and has a first matching state and a second matching state;
in the first matching state, hydraulic liquid is injected into the closed space and pushes the annular piston to ascend;
in the second mating state, the closed space discharges the hydraulic fluid, and the annular piston descends along with the hydraulic fluid.
The technical scheme provided by the embodiment of the application at least has the following beneficial effects:
the operation steps are simplified, and meanwhile, the produced annular hydraulic cylinder is effectively guaranteed to meet the designed compression resistance grade.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
fig. 1 is a production process flow chart of an annular hydraulic cylinder for jacking a bridge and a building provided by the embodiment of the application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be described in detail and completely with reference to the following specific embodiments of the present application and the accompanying drawings. It should be apparent that the described embodiments are only some of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Referring to fig. 1, a production process of an annular hydraulic cylinder for jacking a bridge and a building comprises the following specific steps:
s100: and determining finished product parameters of the annular cylinder body and the annular piston of the annular hydraulic cylinder according to the pressure-bearing parameters of the annular hydraulic cylinder to be used in the target construction environment.
It can be understood that, when actual bridge and building construction is carried out, according to different working conditions, annular hydraulic cylinders with different specifications are often required to be designed for supporting the bearing columns of the bridge and the building and detecting the displacement conditions of the bearing columns. The target construction environment can be understood as the natural environment of an actual construction site and specific parameters of the bearing column in engineering construction. Different natural environments and different standards of load-bearing columns require the use of annular hydraulic cylinders of different specifications. The pressure-bearing parameters of the annular hydraulic cylinder can be understood as specifications. The pressure-bearing parameters can be the diameter and the weight of the bearing column, the steel frame structure at the joint, the distance needing to be lifted and the like. Finished parameters of the annular cylinder body and the annular piston of the annular hydraulic cylinder can be support diameter, piston stroke, ultimate pressure, corrosion resistance, structural strength, material specification and the like. Obviously, the finished product parameters of the annular hydraulic cylinder are determined through specific working condition environments, the pertinence is strong, the method can be more suitable for actual use environments, and the method has better adaptability and stability.
Further, according to the pressure-bearing parameter of the annular hydraulic cylinder to be used in the target construction environment, the finished product parameters of the annular cylinder body and the annular piston of the annular hydraulic cylinder are determined, and the method comprises the following specific steps:
calculating the support diameter, the piston stroke and the limiting pressure of the annular hydraulic cylinder according to the pressure-bearing parameters of the annular hydraulic cylinder to be used in the target construction environment;
calculating the size of the annular hydraulic cylinder according to the support diameter, the piston stroke and the limiting pressure, and analyzing the adopted materials;
and determining finished product parameters of the annular cylinder body and the annular piston of the annular hydraulic cylinder according to the size and the material.
It should be noted that, in practical applications, the pressure-bearing parameters of the ring hydraulic cylinder can be determined mainly according to the weight of the load-bearing column to be supported and the size of the contact surface of the load-bearing column for supporting point connection. The pressure-bearing parameters can be understood as the supporting force, the lifting force and the lifting distance which need to be provided by the annular hydraulic cylinder. Obviously, the size of the annular hydraulic cylinder can be calculated through the supporting force, the lifting force and the lifting distance which need to be provided, and the material which needs to be adopted by the annular hydraulic cylinder is analyzed and determined. The dimensions here include the vertical height of the annular hydraulic cylinder, the footprint in the horizontal plane and the lifting height that can be provided. The material here includes the specification of the steel material to be used for each component in the annular hydraulic cylinder and the specification of the welding material. Obviously, through the size and the material determined here, various index parameters of the annular hydraulic cylinder which is actually needed to be used can be finally determined. The main body part of the annular hydraulic cylinder can be divided into an annular hydraulic cylinder and an annular piston, and the index parameters can be understood as finished product parameters. It can be understood that the main basis of the finished product parameters is the target construction environment, the pertinence is strong, and the annular hydraulic cylinder produced according to the method has better adaptability and stability.
S200: according to the finished product parameters, selecting and processing steel materials to obtain a first annular vertical plate which is used for the inner wall of the cylinder body of the annular cylinder body and accords with preset sizes, a second annular vertical plate which is used for the outer wall of the cylinder body of the annular cylinder body, a first bottom plate which is used for the bottom of the cylinder body of the annular cylinder body, a third annular vertical plate which is used for the inner wall of the piston of the annular piston, a fourth annular vertical plate which is used for the outer wall of the piston of the annular piston, a second bottom plate which is used for the bottom of the piston of the annular piston and a rib plate which is used for reinforcing structures among the third annular vertical plate, the fourth annular vertical plate and the second bottom plate.
It will be appreciated that after the final product parameters have been determined, the final configuration of the annular cylinder is determined. The dimensions of each part of the annular hydraulic cylinder can be determined according to finished product parameters, and the preset dimensions of each part can be determined so as to facilitate the actual machining operation of the part. The first annular vertical plate, the second annular vertical plate, the third annular vertical plate and the fourth annular vertical plate are all in a tubular column shape with a preset size. The first bottom plate and the second bottom plate are both circular bottom plates with preset sizes. The rib plate is a rectangle with a preset size. The overall shape of the annular hydraulic cylinder in the application can be regarded as a circular hollow cylinder, wherein the annular cylinder body is matched with the annular piston. An annular recessed area is formed between the inner ring and the outer ring of the annular cylinder body, and the size of the recessed area is just large enough to accommodate the annular piston and allow the annular piston to perform lifting movement in the recessed area. The inner ring of the annular cylinder body corresponds to the inner wall of the cylinder body, and the outer ring corresponds to the outer wall of the cylinder body. The annular cylinder body and the annular piston are made of customized steel materials, so that the pressure resistance of the annular hydraulic cylinder can be effectively enhanced, and meanwhile, the material rolled into a steel plate is low in acquisition cost, so that the production cost can be reduced, and the environmental pollution can be greatly reduced.
Specifically, according to the parameters of the finished product, selecting and processing a steel material to obtain a first annular vertical plate which is used for the inner wall of the annular cylinder body and accords with a preset size, a second annular vertical plate which is used for the outer wall of the annular cylinder body, a first bottom plate which is used for the bottom of the annular cylinder body, a third annular vertical plate which is used for the inner wall of the piston of the annular piston, a fourth annular vertical plate which is used for the outer wall of the piston of the annular piston, a second bottom plate which is used for the bottom of the piston of the annular piston, and a rib plate which is used for reinforcing the structure among the third annular vertical plate, the fourth annular vertical plate and the second bottom plate, wherein the method comprises the following specific steps:
selecting a bottom plate steel material, a vertical plate steel material and a rib plate steel material according to the finished product parameters, and determining processing parameters;
when the vertical plate steel material is selected to customize the seamless steel pipe, selecting a first-diameter seamless steel pipe for the inner wall of the cylinder body of the annular cylinder body, a second-diameter seamless steel pipe for the outer wall of the cylinder body of the annular cylinder body, a third-diameter seamless steel pipe for the inner wall of the piston of the annular piston and a fourth-diameter seamless steel pipe for the outer wall of the piston of the annular piston;
cutting the first-pipe-diameter seamless steel pipe, the second-pipe-diameter seamless steel pipe, the third-pipe-diameter seamless steel pipe and the fourth-pipe-diameter seamless steel pipe according to the processing parameters to obtain a first annular vertical plate which is in accordance with a preset size and is used for the inner wall of the annular cylinder body, a second annular vertical plate which is in accordance with a preset size and is used for the outer wall of the annular cylinder body, a third annular vertical plate which is in accordance with a preset size and is used for the inner wall of the annular piston, and a fourth annular vertical plate which is in accordance with a preset size and is used for the outer wall of the annular piston;
cutting the bottom plate steel material according to the processing parameters to obtain a first bottom plate which is used for the bottom of the cylinder body of the annular cylinder body and a second bottom plate which is used for the bottom of the piston of the annular piston, and the first bottom plate and the second bottom plate are in accordance with preset sizes;
and cutting the rib plate steel material according to the processing parameters to obtain the rib plates which are in accordance with the preset size and used for reinforcing the structures among the third annular vertical plate, the fourth annular vertical plate and the second bottom plate.
It can be understood that the bottom plate steel material, the vertical plate steel material and the rib plate steel material are all made of steel materials customized according to finished product parameters, and meet the design specifications for manufacturing the annular hydraulic cylinder. The processing parameters are determined according to finished product parameters and are used for processing raw materials, including the length, width, height and other dimensions of the part. After the steel materials of all the parts are selected, the next processing operation can be carried out. The seamless steel pipe is a steel pipe which is formed by punching a whole round steel and has no welding seam on the surface. The first-diameter seamless steel pipe, the second-diameter seamless steel pipe, the third-diameter seamless steel pipe and the fourth-diameter seamless steel pipe are all customized seamless steel pipes. Through the first annular riser of seamless steel pipe processing, second annular riser, third annular riser and fourth annular riser of using the customization, can improve material utilization, simplify manufacturing procedure, material saving and man-hour of processing also can strengthen the whole compressive capacity of annular pneumatic cylinder simultaneously, improve stability. The first bottom plate and the second bottom plate obtained by processing the bottom plate steel material need to accord with preset sizes, and the rib plate obtained by processing the rib plate steel material also needs to accord with the preset sizes. Obviously, the processing and manufacturing are carried out according to the preset size, the method is suitable for batch production, the production efficiency can be effectively improved, and the production cost is reduced.
Further, according to the parameters of the finished product, selecting and processing a steel material to obtain a first annular vertical plate which is used for the inner wall of the annular cylinder body and accords with preset dimensions, a second annular vertical plate which is used for the outer wall of the annular cylinder body, a first bottom plate which is used for the bottom of the annular cylinder body, a third annular vertical plate which is used for the inner wall of the piston of the annular piston, a fourth annular vertical plate which is used for the outer wall of the piston of the annular piston, a second bottom plate which is used for the bottom of the piston of the annular piston, and a rib plate which is used for reinforcing the structures among the third annular vertical plate, the fourth annular vertical plate and the second bottom plate, wherein the method comprises the following specific steps:
selecting a bottom plate steel material, a vertical plate steel material and a rib plate steel material according to the finished product parameters, and determining processing parameters;
when the vertical plate steel material is selected to be a customized steel plate, determining the thickness of the steel plate and cutting the vertical plate steel material according to the processing parameters to obtain a first rectangular steel plate used for the inner wall of the cylinder body of the annular cylinder body, a second rectangular steel plate used for the outer wall of the cylinder body of the annular cylinder body, a third rectangular steel plate used for the inner wall of the piston of the annular piston and a fourth rectangular steel plate used for the outer wall of the piston of the annular piston;
the first rectangular steel plate, the second rectangular steel plate, the third rectangular steel plate and the fourth rectangular steel plate are curled to form a first coiling vertical plate, a second coiling vertical plate, a third coiling vertical plate and a fourth coiling vertical plate which are annular;
welding seams at the closed positions of the circular rings of the first, second, third and fourth rolling vertical plates to obtain a first annular vertical plate which is in accordance with a preset size and is used for the inner wall of the annular cylinder body, a second annular vertical plate which is in accordance with a preset size and is used for the outer wall of the annular cylinder body, a third annular vertical plate which is used for the inner wall of the annular piston and a fourth annular vertical plate which is used for the outer wall of the annular piston;
cutting the bottom plate steel material according to the processing parameters to obtain a first bottom plate which is used for the bottom of the cylinder body of the annular cylinder body and a second bottom plate which is used as the bottom of the piston of the annular piston, and the first bottom plate and the second bottom plate are in accordance with preset sizes;
and cutting the rib plate steel material according to the processing parameters to obtain the rib plates which are in accordance with the preset size and used for reinforcing the structures among the third annular vertical plate, the fourth annular vertical plate and the second bottom plate.
It should be noted that the thickness of the customized steel plate is selected according to the design requirements of the actual annular cylinder and the annular piston. The customized steel plates applied to the annular cylinder body and the annular piston can be different in thickness and size according to actual needs, and can also be the same in thickness and size. The cutting mode is preferably a rolling mode. When the steel plate is curled, the steel plate can be curled by a plate bending machine or manufactured by tool equipment such as a clamping fixture. The obtained annular first, second, third and fourth rolled vertical plates can be understood as tubular hollow cylinders. When rolling up through the plate bending machine, first system riser, second system riser, third system riser and fourth system riser of rolling up are mainly rolled up the circle through machinery and are obtained, and the product that obtains through machinery circle rolling can both accord with the designing requirement in compressive capacity and stability, and processing technology is simple simultaneously, saves the processing cost. It should be noted that, the mechanical edge rolling obtains the first rolled vertical plate, the second rolled vertical plate, the third rolled vertical plate and the fourth rolled vertical plate, and a seam can exist at the closed position of the cylinder. The seam is welded and filled in a welding mode, and finally the annular column with the completely closed pipe wall is obtained, namely the first annular vertical plate, the second annular vertical plate, the third annular vertical plate and the fourth annular vertical plate. It is important to point out that the ring-shaped cylinder obtained by processing the customized steel plate in the modes of rolling, mechanical rolling, welding and the like has simple production process, meets the design requirements on the specification and can effectively reduce the production cost.
Specifically, the first bottom plate and the second bottom plate can be further prepared by the following method:
and forging the bottom plate steel material according to the processing parameters to obtain a first bottom plate used for the bottom of the cylinder body of the annular cylinder body and a second bottom plate used for the bottom of the piston of the annular piston.
It is understood that forging is a process of applying pressure to a metal blank using a forging machine to plastically deform the metal blank to obtain a forging having certain mechanical properties, a certain shape and size. The first bottom plate and the second bottom plate obtained by forging optimize the microstructure, and simultaneously, the mechanical property of the first bottom plate and the second bottom plate is superior to that of a casting made of the same material because the complete metal streamline is preserved. The first bottom plate and the second bottom plate obtained by forging have better pressure resistance.
S300: and respectively welding the first annular vertical plate, the second annular vertical plate, the third annular vertical plate, the fourth annular vertical plate, the first bottom plate, the second bottom plate and the rib plate to obtain the blank annular cylinder body and the blank annular piston.
Specifically, the first annular vertical plate, the second annular vertical plate, the third annular vertical plate, the fourth annular vertical plate, the first bottom plate, the second bottom plate and the rib plate are respectively welded to obtain the blank annular cylinder body and the blank annular piston, and the method comprises the following specific steps of:
respectively and vertically welding the first annular vertical plate and the second annular vertical plate on the inner side edge and the outer side edge of the first bottom plate to obtain a blank annular cylinder body;
respectively and vertically welding the third annular vertical plate and the fourth annular vertical plate to the inner side edge and the outer side edge of the second bottom plate;
and simultaneously and vertically welding the rib plates to the second bottom plate, the third annular vertical plate and the fourth annular vertical plate to obtain the blank annular piston.
In a specific production process of the annular hydraulic cylinder, the first bottom plate and the second bottom plate are annular bottom plates in a ring shape formed by an outer circle and an inner circle of which the centers of circles are at the same point. Due to the design of the circular ring shape, the stress can be evenly distributed on the annular hydraulic cylinder, and the safety is higher. The first annular vertical plate is vertical to the first bottom plate at the edge of the inner circle of the first bottom plate, the second annular vertical plate is vertical to the first bottom plate at the edge of the outer circle of the first bottom plate, and the vertical heights of the first annular vertical plate and the second annular vertical plate are kept equal. The third annular vertical plate is vertical to the second bottom plate at the edge of the inner circle of the second bottom plate, the fourth annular vertical plate is vertical to the second bottom plate at the edge of the outer circle of the second bottom plate, and the vertical heights of the third annular vertical plate and the fourth annular vertical plate are equal. In this application, the annular piston bottom plate of considering annular piston receives the external force strongest, for strengthening holistic compressive capacity, needs strengthen annular piston bottom plate. The annular piston bottom plate is understood here as the second bottom plate. Therefore, the whole pressure resistance can be enhanced by additionally arranging the rib plates on the annular piston bottom plate. The number of the rib plates can be 8, the rib plates are evenly vertically welded on the annular piston bottom plate, the annular piston bottom plate is equally divided into 8 areas with equal areas, and the rib plates are also vertically welded with the third annular vertical plate and the second annular vertical plate respectively. The edge parts of one sides, which are used for supporting the column bodies, between the rib plates, the third annular vertical plate and the fourth annular vertical plate are positioned in the same horizontal plane.
Specifically, the method further comprises the following steps:
a fixed column with the length being larger than the maximum running distance of the annular piston is vertically arranged between the first annular vertical plate and the second annular vertical plate of the first bottom plate;
welding an inner angle at the joint of the first bottom plate and the first annular vertical plate and the second annular vertical plate to form an arc;
and calculating the R angle of the arc according to a stress calculation model.
It will be appreciated that the purpose of the lifting movement of the annular piston is to lift or lower the load-bearing support column fixed thereto. The annular cylinder body and the annular piston are connected in an annular mode, if the annular cylinder body and the annular piston are not arranged in an anti-rotation mode, rotation is likely to occur under the action of external force, the bearing support fixed on the annular cylinder body can be driven to rotate, certain errors exist in the installation angle of the bearing support, and potential safety hazards can be brought. This application can prevent that the relative annular cylinder body of annular piston is rotatory at first bottom plate installation and annular piston assorted fixed column, does not influence annular piston simultaneously and carries out the descending motion that rises in the annular cylinder body. In specific implementation, a sleeve matched with the length of the fixing column can be welded on the second bottom plate, and at the moment, the through hole needs to be drilled correspondingly on the second bottom plate, so that the fixing column can be matched with the sleeve through the through hole. The annular piston is in ascending and descending movement, the sleeve is sleeved on the fixed column, and the depth of the sleeve needs to be long enough, so that when the annular piston ascends to the maximum position, the fixed column is still in the sleeve. The sleeve is welded to the other side of the second base plate which is in contact with the first base plate. Preferably, 2 fixing columns can be installed on the fixing column, and 2 corresponding sleeves are welded. Preferably, the fixing column is not in contact with the first annular vertical plate and the second annular vertical plate, so as to avoid adverse effects on the overall tightness of the final annular hydraulic cylinder. Obviously, through setting up the fixed column, can prevent effectively that annular piston and annular cylinder body from taking place relative rotary motion, improve annular hydraulic cylinder's security and bearing pillar installation angle's accuracy.
The circular arc here is understood to be an inner angle formed by chamfering. The dimension of the R-angle here is understood to correspond to the radius of the chamfer, which is obtained by a special stress calculation formula. In a specific implementation process, when the diameter of the outer circle formed by the second annular vertical plate is 1000mm, the radius of the chamfer is not less than 12mm through calculation of a stress calculation formula. It will be apparent that in addition to chamfering the inner corners of the annular cylinder, the outer corners of the annular piston may be machined to round. When the annular cylinder and the annular piston move relatively, the inner angle of the annular cylinder corresponds to the outer angle of the annular piston. When the annular piston is at the shortest travel distance, the cylinder part at the inner corner of the annular cylinder and the piston body part at the outer corner of the annular piston are in contact. Preferably, chamfering processing can be performed on an outer corner formed by connecting the first bottom plate and the second annular vertical plate, an outer corner formed by connecting the first bottom plate and the first annular vertical plate, and an outer corner and an inner corner related to the annular piston. Through chamfering treatment, the pressure resistance of the annular cylinder body and the annular piston can be effectively improved, and the safety is improved.
Furthermore, an annular ring for processing a chamfer is welded on the outer side of the bottom plate of the blank annular piston.
It should be noted that, through stress mechanical analysis of the pressurization test, the maximum stress point of the stress can be found to be concentrated in the area where the inner angle and the outer angle are located. This application is for strengthening annular piston's compressive capacity, at the annular circle of blank annular piston's bottom plate outside welding. In consideration of the strength enhancing effect and the production cost, 2 annular rings can be welded. The welding ring can strengthen the strength of the position, and can prevent the steel material from becoming thin and weakened when the chamfer is processed. Preferably, in order to enhance the overall pressure resistance of the annular hydraulic cylinder, an annular ring can be welded on the outer side of the bottom plate of the blank annular cylinder body, so that the pressure resistance of the annular cylinder body is enhanced.
S400: and carrying out heat treatment on the blank annular cylinder body and the blank annular piston according to the finished product parameters to obtain a semi-finished product annular cylinder body and a semi-finished product annular piston.
Specifically, according to the finished product parameters, the blank annular cylinder body and the blank annular piston are subjected to heat treatment to obtain a semi-finished product annular cylinder body and a semi-finished product annular piston, and the method comprises the following specific steps:
setting the peak temperature, the linear heating time, the peak temperature holding time and the cooling time of the heat treatment according to the parameters of the finished product;
linearly heating the blank annular cylinder body and the blank annular piston to the peak temperature according to the peak temperature and the linear heating time, and keeping the time for heat preservation according to the peak temperature to obtain a heat treatment annular cylinder body and a heat treatment annular piston;
and after the heat preservation time reaches the peak temperature holding time, cooling the heat treatment annular cylinder body and the heat treatment annular piston according to the cooling time to obtain a semi-finished annular cylinder body and a semi-finished annular piston.
It is understood that heat treatment refers to a hot working process of metals in which the material is in a solid state by means of heating, holding and cooling to achieve a desired texture and properties. The peak temperature of the heat treatment in the present application is preferably 300-. The heat treatment here may be understood as an annealing heat treatment. In the specific implementation process, the temperature of the part is raised to 800 ℃ at 300 ℃ in a heat treatment furnace, the part is kept for 6-60 hours, then the part is slowly cooled, the cooling speed of slow cooling is less than 50 ℃/hour, and the part is discharged after the part is slowly cooled to below 200 ℃. The parts here refer to the blank annular cylinder and the blank annular piston. The whole heat treatment time is 3-9 days. Through heat treatment, the stability and the pressure resistance of the annular hydraulic cylinder can be effectively improved.
S500: and machining the semi-finished annular cylinder body and the semi-finished annular piston according to the finished product parameters to obtain the annular hydraulic cylinder.
Further, according to the finished product parameters, machining the semi-finished product annular cylinder body and the semi-finished product annular piston to obtain an annular hydraulic cylinder, and the method comprises the following specific steps:
setting machining parameters according to the finished product parameters;
grinding the semi-finished annular cylinder body according to the machining parameters to obtain a finished annular cylinder body;
according to the machining parameters, a plurality of annular grooves used for installing seals are machined on the outer side of the third annular vertical plate and the outer side of the fourth annular vertical plate respectively, and chamfers are machined on the annular rings to obtain finish machining annular pistons;
according to the machining parameters, drilling through holes for hydraulic fluid injection and discharge on an annular bottom plate of the finish machining annular piston, and drilling positioning holes which penetrate through the annular bottom plate and enter a rib plate and are matched with the fixing columns to obtain a finished annular piston;
assembling the finished annular cylinder body and the finished annular piston to obtain an annular hydraulic cylinder;
the annular part between the annular cylinder body and the annular piston of the annular hydraulic cylinder forms a closed space;
the annular piston is arranged between the inner ring and the outer ring of the annular cylinder body, moves relative to the annular cylinder body and is used for supporting a bridge and a building strut;
the closed space is used for storing hydraulic liquid;
the annular piston moves relative to the annular cylinder body and has a first matching state and a second matching state;
in the first matching state, hydraulic liquid is injected into the closed space and pushes the annular piston to ascend;
in the second mating state, the closed space discharges the hydraulic fluid, and the annular piston descends along with the hydraulic fluid.
It will be appreciated that grinding is a process of removing metal using a grinding wheel, and the workpiece is accurate in size and smooth in surface. The method is mainly used for finish machining of the workpiece subjected to heat treatment to enable the workpiece to reach an accurate size. Drilling, namely drilling on a solid metal workpiece by using a rotary drill bit; during drilling, the workpiece is positioned, clamped and fixed; the drill bit is also required to make a feed motion along its own axis in addition to rotating.
It should be noted that, in the occasion of constructing the enclosed space, the sealing strip can effectively ensure the sealing effect of the enclosed space. In this application, a closed space needs to be established between the annular cylinder and the annular piston for storing hydraulic liquid. At this time, the sealing property of the closed space can be improved by adding the sealing strip. In order to prevent the sealing strip from sliding or deviating under the internal and external acting forces to influence the sealing effect, annular grooves can be machined at the position where the sealing strip is installed, and the number of the grooves can be set according to actual needs. According to the pressure-bearing capacity of actual design, sealing strips need to be installed on the outer sides of the third annular vertical plate and the fourth annular vertical plate, and a plurality of annular grooves can be formed in the outer sides of the third annular vertical plate and the outer sides of the fourth annular vertical plate. It is obvious that the pressure resistance of the annular hydraulic cylinder can be further improved by providing a groove for mounting the sealing strip.
In this application, through producing pressure to the injected hydraulic fluid in the annular cylinder body, the annular piston carries out the rising movement under the effect of pressure. When hydraulic fluid is displaced from the annular cylinder, the pressure in the annular cylinder decreases and the annular piston performs a lowering movement. In a particular implementation, the through-holes for the injection and discharge of hydraulic fluid are drilled in the annular piston bottom plate in order to avoid an adverse effect on the overall pressure resistance of the annular cylinder. The drilling process needs cooling operation, such as spraying water to the drilling part.
It should be pointed out that the through holes in the second bottom plate for the fixed columns to pass through and the positioning holes in the rib plates need to be isolated from the outside, so that the closed space in the whole annular hydraulic cylinder is not damaged. Meanwhile, after the positioning holes are drilled in the rib plates, sleeves do not need to be additionally welded on the second bottom plate, the positioning holes can be directly matched with the fixing columns, and the effect of preventing the annular cylinder body and the annular piston from rotating mutually is achieved. The number and the position of the positioning holes need to correspond to the number and the position of the fixing columns. In particular, the thickness of the rib plate of the drilled positioning hole is larger than the diameter of the positioning hole, so that hydraulic fluid is prevented from leaking through the positioning hole in the rib plate, and the pressure resistance of the whole annular hydraulic cylinder is prevented from being affected.
The technical scheme provided by the embodiment of the application at least has the following beneficial effects:
the operation steps are simplified, and meanwhile, the produced annular hydraulic cylinder is effectively guaranteed to meet the designed compression resistance grade.
It is to be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, the statement that there is an element defined as "comprising" … … does not exclude the presence of other like elements in the process, method, article, or apparatus that comprises the element.
The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.
Claims (10)
1. A production process of an annular hydraulic cylinder for jacking bridges and buildings is characterized by comprising the following specific steps:
determining finished product parameters of an annular cylinder body and an annular piston of the annular hydraulic cylinder according to the pressure-bearing parameters of the annular hydraulic cylinder to be used in the target construction environment;
according to the finished product parameters, selecting and processing steel materials to obtain a first annular vertical plate which is used for the inner wall of the cylinder body of the annular cylinder body and accords with preset sizes, a second annular vertical plate which is used for the outer wall of the cylinder body of the annular cylinder body, a first bottom plate which is used for the bottom of the cylinder body of the annular cylinder body, a third annular vertical plate which is used for the inner wall of the piston of the annular piston, a fourth annular vertical plate which is used for the outer wall of the piston of the annular piston, a second bottom plate which is used for the bottom of the piston of the annular piston and a rib plate which is used for reinforcing structures among the third annular vertical plate, the fourth annular vertical plate and the second bottom plate;
respectively welding the first annular vertical plate, the second annular vertical plate, the third annular vertical plate, the fourth annular vertical plate, the first bottom plate, the second bottom plate and the rib plate to obtain a blank annular cylinder body and a blank annular piston;
according to the finished product parameters, carrying out heat treatment on the blank annular cylinder body and the blank annular piston to obtain a semi-finished product annular cylinder body and a semi-finished product annular piston;
and machining the semi-finished annular cylinder body and the semi-finished annular piston according to the finished product parameters to obtain the annular hydraulic cylinder.
2. The production process according to claim 1, wherein the finished parameters of the annular cylinder body and the annular piston of the annular hydraulic cylinder are determined according to the pressure-bearing parameters of the annular hydraulic cylinder to be used in the target construction environment, and the production process comprises the following specific steps:
calculating the support diameter, the piston stroke and the limiting pressure of the annular hydraulic cylinder according to the pressure-bearing parameters of the annular hydraulic cylinder to be used in the target construction environment;
calculating the size of the annular hydraulic cylinder according to the support diameter, the piston stroke and the limiting pressure, and analyzing the adopted materials;
and determining finished product parameters of the annular cylinder body and the annular piston of the annular hydraulic cylinder according to the size and the material.
3. The production process according to claim 1, wherein according to the parameters of the finished product, a steel material is selected and processed to obtain a first annular vertical plate which is used for the inner wall of the annular cylinder body and accords with preset dimensions, a second annular vertical plate which is used for the outer wall of the annular cylinder body, a first bottom plate which is used for the bottom of the annular cylinder body, a third annular vertical plate which is used for the inner wall of the piston of the annular piston, a fourth annular vertical plate which is used for the outer wall of the piston of the annular piston, a second bottom plate which is used for the bottom of the piston of the annular piston, and a rib plate which is used for reinforcing structures among the third annular vertical plate, the fourth annular vertical plate and the second bottom plate, and the production process comprises the following specific steps:
selecting a bottom plate steel material, a vertical plate steel material and a rib plate steel material according to the finished product parameters, and determining processing parameters;
when the vertical plate steel material is selected to customize the seamless steel pipe, selecting a first-diameter seamless steel pipe for the inner wall of the cylinder body of the annular cylinder body, a second-diameter seamless steel pipe for the outer wall of the cylinder body of the annular cylinder body, a third-diameter seamless steel pipe for the inner wall of the piston of the annular piston and a fourth-diameter seamless steel pipe for the outer wall of the piston of the annular piston;
cutting the first-pipe-diameter seamless steel pipe, the second-pipe-diameter seamless steel pipe, the third-pipe-diameter seamless steel pipe and the fourth-pipe-diameter seamless steel pipe according to the processing parameters to obtain a first annular vertical plate which is in accordance with a preset size and is used for the inner wall of the annular cylinder body, a second annular vertical plate which is in accordance with a preset size and is used for the outer wall of the annular cylinder body, a third annular vertical plate which is in accordance with a preset size and is used for the inner wall of the annular piston, and a fourth annular vertical plate which is in accordance with a preset size and is used for the outer wall of the annular piston;
cutting the bottom plate steel material according to the processing parameters to obtain a first bottom plate which is used for the bottom of the cylinder body of the annular cylinder body and a second bottom plate which is used for the bottom of the piston of the annular piston, and the first bottom plate and the second bottom plate are in accordance with preset sizes;
and cutting the rib plate steel material according to the processing parameters to obtain the rib plates which are in accordance with the preset size and used for reinforcing the structures among the third annular vertical plate, the fourth annular vertical plate and the second bottom plate.
4. The production process according to claim 1, wherein according to the parameters of the finished product, a steel material is selected and processed to obtain a first annular vertical plate which is used for the inner wall of the annular cylinder body and accords with preset dimensions, a second annular vertical plate which is used for the outer wall of the annular cylinder body, a first bottom plate which is used for the bottom of the annular cylinder body, a third annular vertical plate which is used for the inner wall of the piston of the annular piston, a fourth annular vertical plate which is used for the outer wall of the piston of the annular piston, a second bottom plate which is used for the bottom of the piston of the annular piston, and a rib plate which is used for reinforcing structures among the third annular vertical plate, the fourth annular vertical plate and the second bottom plate, and the production process comprises the following specific steps:
selecting a bottom plate steel material, a vertical plate steel material and a rib plate steel material according to the finished product parameters, and determining processing parameters;
when the vertical plate steel material is selected to be a customized steel plate, determining the thickness of the steel plate and cutting the vertical plate steel material according to the processing parameters to obtain a first rectangular steel plate used for the inner wall of the cylinder body of the annular cylinder body, a second rectangular steel plate used for the outer wall of the cylinder body of the annular cylinder body, a third rectangular steel plate used for the inner wall of the piston of the annular piston and a fourth rectangular steel plate used for the outer wall of the piston of the annular piston;
the first rectangular steel plate, the second rectangular steel plate, the third rectangular steel plate and the fourth rectangular steel plate are curled to form a first coiling vertical plate, a second coiling vertical plate, a third coiling vertical plate and a fourth coiling vertical plate which are annular;
welding seams at the closed positions of the circular rings of the first, second, third and fourth rolling vertical plates to obtain a first annular vertical plate which is in accordance with a preset size and is used for the inner wall of the annular cylinder body, a second annular vertical plate which is in accordance with a preset size and is used for the outer wall of the annular cylinder body, a third annular vertical plate which is used for the inner wall of the annular piston and a fourth annular vertical plate which is used for the outer wall of the annular piston;
cutting the bottom plate steel material according to the processing parameters to obtain a first bottom plate which is used for the bottom of the cylinder body of the annular cylinder body and a second bottom plate which is used as the bottom of the piston of the annular piston, and the first bottom plate and the second bottom plate are in accordance with preset sizes;
and cutting the rib plate steel material according to the processing parameters to obtain the rib plates which are in accordance with the preset size and used for reinforcing the structures among the third annular vertical plate, the fourth annular vertical plate and the second bottom plate.
5. The production process according to any one of claims 3 or 4, wherein the first and second bottom plates are further prepared by:
and forging the bottom plate steel material according to the processing parameters to obtain a first bottom plate used for the bottom of the cylinder body of the annular cylinder body and a second bottom plate used for the bottom of the piston of the annular piston.
6. The production process according to claim 1, wherein the first annular vertical plate, the second annular vertical plate, the third annular vertical plate, the fourth annular vertical plate, the first bottom plate, the second bottom plate and the rib plate are respectively welded to obtain the blank annular cylinder body and the blank annular piston, and the production process comprises the following specific steps:
respectively and vertically welding the first annular vertical plate and the second annular vertical plate on the inner side edge and the outer side edge of the first bottom plate to obtain a blank annular cylinder body;
respectively and vertically welding the third annular vertical plate and the fourth annular vertical plate to the inner side edge and the outer side edge of the second bottom plate;
and simultaneously and vertically welding the rib plates to the second bottom plate, the third annular vertical plate and the fourth annular vertical plate to obtain the blank annular piston.
7. The production process according to claim 6, further comprising the steps of:
a fixed column with the length being larger than the maximum running distance of the annular piston is vertically arranged between the first annular vertical plate and the second annular vertical plate of the first bottom plate;
welding an inner angle at the joint of the first bottom plate and the first annular vertical plate and the second annular vertical plate to form an arc;
and calculating the R angle of the arc according to a stress calculation model.
8. The process of claim 7, wherein an annular ring for machining a chamfer is also welded to the outside of the bottom plate of the blank annular piston.
9. The production process according to claim 1, wherein the blank annular cylinder and the blank annular piston are heat treated according to the finished product parameters to obtain a semi-finished annular cylinder and a semi-finished annular piston, comprising the following specific steps:
setting the peak temperature, the linear heating time, the peak temperature holding time and the cooling time of the heat treatment according to the parameters of the finished product;
linearly heating the blank annular cylinder body and the blank annular piston to the peak temperature according to the peak temperature and the linear heating time, and keeping the time for heat preservation according to the peak temperature to obtain a heat treatment annular cylinder body and a heat treatment annular piston;
and after the heat preservation time reaches the peak temperature holding time, cooling the heat treatment annular cylinder body and the heat treatment annular piston according to the cooling time to obtain a semi-finished annular cylinder body and a semi-finished annular piston.
10. The production process according to claim 8, wherein machining said semi-finished annular cylinder and said semi-finished annular piston according to said finished parameters, obtaining an annular hydraulic cylinder, comprises the following specific steps:
setting machining parameters according to the finished product parameters;
grinding the semi-finished annular cylinder body according to the machining parameters to obtain a finished annular cylinder body;
according to the machining parameters, a plurality of annular grooves used for installing seals are machined on the outer side of the third annular vertical plate and the outer side of the fourth annular vertical plate respectively, and chamfers are machined on the annular rings to obtain finish machining annular pistons;
according to the machining parameters, drilling through holes for hydraulic fluid injection and discharge on an annular bottom plate of the finish machining annular piston, and drilling positioning holes which penetrate through the annular bottom plate and enter a rib plate and are matched with the fixing columns to obtain a finished annular piston;
assembling the finished annular cylinder body and the finished annular piston to obtain an annular hydraulic cylinder;
the annular part between the annular cylinder body and the annular piston of the annular hydraulic cylinder forms a closed space;
the annular piston is arranged between the inner ring and the outer ring of the annular cylinder body, moves relative to the annular cylinder body and is used for supporting a bridge and a building strut;
the closed space is used for storing hydraulic liquid;
the annular piston moves relative to the annular cylinder body and has a first matching state and a second matching state;
in the first matching state, hydraulic liquid is injected into the closed space and pushes the annular piston to ascend;
in the second mating state, the closed space discharges the hydraulic fluid, and the annular piston descends along with the hydraulic fluid.
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| CN113909807B (en) | 2022-09-02 |
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