CN114087360A - Plugging device and part - Google Patents

Plugging device and part Download PDF

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Publication number
CN114087360A
CN114087360A CN202111209931.9A CN202111209931A CN114087360A CN 114087360 A CN114087360 A CN 114087360A CN 202111209931 A CN202111209931 A CN 202111209931A CN 114087360 A CN114087360 A CN 114087360A
Authority
CN
China
Prior art keywords
cavity
baffle
hole
wall
piston
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202111209931.9A
Other languages
Chinese (zh)
Inventor
曾书华
闫涛卫
张健
吴艳华
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dongfeng Motor Group Co Ltd
Original Assignee
Dongfeng Motor Group Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dongfeng Motor Group Co Ltd filed Critical Dongfeng Motor Group Co Ltd
Priority to CN202111209931.9A priority Critical patent/CN114087360A/en
Publication of CN114087360A publication Critical patent/CN114087360A/en
Pending legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J1/00—Pistons; Trunk pistons; Plungers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J1/00—Pistons; Trunk pistons; Plungers
    • F16J1/10—Connection to driving members
    • F16J1/12—Connection to driving members with piston-rods, e.g. rigid connections
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/02—Sealings between relatively-stationary surfaces
    • F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
    • F16J15/061—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with positioning means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/02—Sealings between relatively-stationary surfaces
    • F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
    • F16J15/10—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing
    • F16J15/104—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing characterised by structure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16S—CONSTRUCTIONAL ELEMENTS IN GENERAL; STRUCTURES BUILT-UP FROM SUCH ELEMENTS, IN GENERAL
    • F16S1/00—Sheets, panels, or other members of similar proportions; Constructions comprising assemblies of such members
    • F16S1/10—Composite members, e.g. with ribs or flanges attached
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/04—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the coating material
    • C23C2/06—Zinc or cadmium or alloys based thereon
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D13/00—Electrophoretic coating characterised by the process
    • C25D13/12—Electrophoretic coating characterised by the process characterised by the article coated
    • C25D13/14—Tubes; Rings; Hollow bodies

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Gasket Seals (AREA)

Abstract

The application discloses plugging device belongs to thin wall part rust-resistant processing technical field. The plugging device comprises a shell and a piston, wherein the shell is used for being inserted and fixed at the end part of a first cavity formed by the enclosed cross section of a thin-wall part, a first through hole penetrating through the first end and the second end of the shell opposite to each other is arranged in the shell, the piston slides in the first through hole and is hermetically connected with the inner wall of the first through hole, the side wall of the shell is matched with the shape of the inner wall of the first cavity, so that the shell can be hermetically connected with the first cavity and relatively fixed after being inserted into the end part of the first cavity, and the inner wall of the end part of the first cavity is prevented from directly contacting with the outside through the shell, the anti-corrosion effect of the inner wall of the end part of the first cavity is improved, and simultaneously, when the thin-wall part is subjected to galvanizing or electrophoretic paint treatment, the piston can balance the air pressure of the closed cavity, and the situation that the thin-wall part is deformed due to the fact that the air pressure of the closed cavity is increased due to overhigh external temperature is avoided.

Description

Plugging device and part
Technical Field
The application belongs to the technical field of rust-proof treatment, especially relates to a plugging device and part.
Background
In commercial vehicles, a thin steel plate is often processed into a part having a closed cross-sectional structure with a closed circumferential direction and an open end, so as to improve the strength and rigidity of the part. The parts need to be subjected to rust prevention treatment before being loaded on a car, and the common rust prevention treatment method is a zinc plating or electrophoretic painting method. But because directly carry out rust-resistant processing with the part can lead to zinc or paint layer poor adhesion at the closed cross-section inner wall because of the equipotential, there is rust-resistant ability hardly, and the part loading back rainwater can get into the tubular construction inside from tubular construction's tip and lead to the part very easily to rust.
In the related art, a sealing plate is usually arranged at the opening end of a cylinder structure to completely seal the cylinder structure so as to prevent paint or corrosive liquid from entering and staying in a cavity of a part in the rust prevention treatment process and prevent rainwater from entering the cylinder structure to corrode the part in the subsequent use process. But because the procedures of cleaning, electrophoresis, drying and the like are needed in the electroplating or painting process, the temperature of the part is repeatedly changed from room temperature to 200 ℃; the influence of temperature changes also needs to be experienced in daily use. After two ends of the part are completely sealed, when the temperature changes, the air volume and the pressure in the cavity change along with the temperature change, so that the thin-wall part deforms, and the part is scrapped when the temperature changes seriously.
Disclosure of Invention
The application aims to solve the technical problems that the closed section of the existing thin-wall part is easy to deform and the inner wall of the closed section of the thin-wall part is poor in rust prevention capability to a certain extent. To this end, the application provides a plugging device and a thin-walled part.
The embodiment of the application provides a plugging device for the first cavity that the closed cross-section of shutoff part encloses and closes and form, plugging device includes:
the shell is used for being fixedly inserted into the end part of the first cavity, a first end and a second end which are opposite to each other and a first through hole which penetrates through the first end and the second end are arranged in the shell, and the shape of the side wall of the shell is matched with the shape of the inner wall of the first cavity; and the number of the first and second groups,
and the piston slides in the first through hole and is in sealing connection with the inner wall of the first through hole.
In some embodiments, the occlusion device further comprises a first baffle and a second baffle disposed opposite to each other, the first baffle and the second baffle are both fixedly connected to the housing and located on a sliding path of the piston, and the piston slides between the first baffle and the second baffle.
In some embodiments, the first baffle is fixed to the first end of the housing, the first baffle defines a first through hole that extends through the first baffle and faces the piston, the second baffle is fixed to the second end of the housing, and the second baffle defines a second through hole that extends through the second baffle and faces the piston.
In some embodiments, the first baffle blocks the first through hole, and the first through hole is a damping hole.
In some embodiments, the first baffle is integrally formed with the housing.
In some embodiments, a piston rod is fixedly connected to one end of the piston facing the second baffle, and a second through hole through which the piston rod passes is formed in the second baffle.
In some embodiments, a sealing ring is fixed to a side wall of the housing and is disposed along a circumferential direction of the housing.
In some embodiments, the side wall of the housing defines an annular groove, and the sealing ring is fixed in the annular groove.
In some embodiments, the first end of the housing defines a first recess;
and/or a second groove is formed in the second end of the shell.
The application also provides a thin-wall part, the thin-wall part has a first cavity that the closed cross section encloses, the both ends of first cavity are fixed with foretell plugging device respectively.
Compared with the prior art, the invention has the following beneficial effects:
the application is through providing a tip that plugging device comes the first cavity of shutoff thin wall part, the lateral wall shape of plugging device's shell and the inner wall shape looks adaptation of first cavity, thereby make the shell insert behind the tip of first cavity, can with first cavity sealing connection and relatively fixed, the middle part and the external world of first cavity of first through-hole intercommunication of seting up on the shell, the piston is then sliding seal in this first through-hole in order to cut off first through-hole, the shell can avoid the inner wall of the tip of first cavity direct and external contact, improve the rust-resistant effect of losing of the inner wall of first cavity tip, and simultaneously, the piston can seal into closed cavity with the middle part of first cavity, isolated this closed cavity and external contact, thereby improve the rust-resistant effect of losing at first cavity middle part, then improve the rust-resistant effect of losing of whole first cavity inner wall. In addition, the piston can slide under the action of pressure difference, so that when the thin-wall part is galvanized or electrophoretic paint treated, the air pressure of the closed cavity can be balanced, and the deformation of the thin-wall part caused by the increase of the air pressure of the closed cavity due to overhigh external temperature is avoided.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 shows a schematic structural diagram of a prior art thin-walled part;
FIG. 2 is a schematic view showing the structure of the plugging device fixed on a thin-wall part;
FIG. 3 shows a schematic view of one configuration of the plugging device of FIG. 2;
FIG. 4 shows an exploded view of FIG. 3;
FIG. 5 is a schematic diagram showing another perspective of the housing of FIG. 4;
FIG. 6 shows a cross-sectional schematic view of FIG. 3;
FIG. 7 is a schematic view of another arrangement of the first baffle and the housing of FIG. 6;
FIG. 8 shows a schematic view of another construction of the plugging device of FIG. 2;
fig. 9 shows a schematic view of the structure of the housing of fig. 8.
Reference numerals:
100-thin-walled parts; 110-closed cross section; 111-a first cavity;
200-an occlusion device; 210-a housing; 211 — a first via; 212-an annular groove; 213-a first groove; 214-a second groove; 215-a first cylinder; 216-a second cylinder; 217-connecting part; 220-a piston; 221-a piston rod; 230-a first baffle; 231-first via holes; 240-a second baffle; 241-a second via; 242 — a second via; 250-sealing ring.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, 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 invention.
It should be noted that all the directional indications in the embodiments of the present invention are only used to explain the relative position relationship, the motion situation, and the like between the components in a certain posture, and if the certain posture is changed, the directional indication is changed accordingly.
In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In addition, the descriptions related to "first", "second", etc. in the present invention are only for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The application is described below with reference to specific embodiments in conjunction with the following drawings:
example one
As shown in fig. 1, a conventional thin-walled component 100 is generally formed with at least one closed cross-section 110 for enhancing its strength and rigidity, and the closed cross-section 110 encloses a first cavity 111 with two open ends.
As shown in fig. 2, the present embodiment provides a plugging device 200 for plugging an end portion of the closed cross section of the thin-walled part 100, i.e. plugging an end portion of the first cavity 111, so as to solve the technical problem that the closed cross section is easily deformed during the anti-rust treatment after the end portion of the closed cross section of the thin-walled part 100 is plugged, only one plugging device 200 is shown in fig. 2 for plugging the end portion of the first cavity 111, and in actual use, one plugging device 200 is fixed to both opposite ends of the first cavity 111.
As shown in fig. 3 and 4, the occluding device 200 includes a housing 210 and a plunger 220. Wherein, the housing 210 is used for inserting and blocking the end of the first cavity 111, the housing 210 has a first end and a second end opposite to each other and a first through hole 211 penetrating the first end and the second end, and the first through hole 211 is a straight hole. The piston 220 is located in the first through hole 211, the outer circumferential surface of the piston 220 is sealed with the hole wall of the first through hole 211, and the piston 220 can slide along the length direction of the first through hole 211. The outer wall of the housing 210 is a profile structure, and the outer wall of the housing 210 is adapted to the inner wall of the closed cross section 110, that is, the cross-sectional profile shape of the outer wall of the housing 210 along the radial direction of the first through hole 211 is adapted to the cross-sectional profile shape of the inner wall of the first cavity 111 along the radial direction, so that after the housing 210 is inserted into the first cavity 111, the outer wall of the housing 210 can be fitted to the side wall of the first cavity 111 and sealed and fixed.
It should be noted that, according to the shape of the closed section 110 in the thin-walled part 100 used at different positions of the vehicle, the outline shape of the outer wall of the housing 210 is changed accordingly, so as to satisfy the requirement that the outer wall of the housing 210 is sealed and fixed with the first cavity 111.
The radial cross-sectional shape of the first through hole 211 may be any shape, and it is only necessary to make the shape of the piston 220 to be matched with the first through hole 211, so that the piston 220 can slide in the first through hole 211 and maintain the seal with the inner wall of the first through hole 211. Preferably, the first through hole 211 is a circular through hole, and correspondingly, the piston 220 is also a cylindrical solid structure, so that the processing difficulty of the piston 220 and the first through hole 211 is reduced, and the processing cost of the plugging device 200 is reduced.
Preferably, the piston 220 is made of a hard material, such as hard metal or hard plastic, and the outer circumferential wall of the piston 220 is provided with a layer of elastic rubber, so that the piston 220 can achieve sealing by the elasticity of the elastic rubber.
In some embodiments, the entire piston 220 may also be made of an elastic rubber.
As shown in fig. 4 and 6, further, in order to prevent the piston 220 from sliding out of the housing 210, in the present embodiment, the blocking device further includes a first baffle 230 and a second baffle 240 which are oppositely and separately arranged. The first baffle 230 and the second baffle 240 are fixedly connected to the housing 210 and respectively located at two opposite sides of the sliding direction of the piston 220, and at least a portion of the first baffle 230 and the second baffle 240 are located on the sliding path of the piston 220 to limit the sliding distance of the piston 220, so that the piston 220 slides between the first baffle 230 and the second baffle 240, and the piston 220 is prevented from falling off from the end of the first through hole 211.
It should be noted that, in the present embodiment, the first baffle 230 is disposed at a first end of the housing 210, and the second baffle 240 is disposed at a second end of the housing 210. Moreover, after the first baffle 230 and the second baffle 240 are disposed, in order to ensure that the piston 220 can slide under the action of air pressure, in this embodiment, a first through hole 231 penetrating through two opposite ends of the first baffle 230 is formed in the plate body of the first baffle 230, one end of the first through hole 231 faces the piston 220 and is communicated with the cavity between the piston 220 and the first baffle 230, and the other end of the first through hole 231 faces the outside of the plugging device 200 and is communicated with the outside, so that the piston 220 can exhaust or suck air through the first through hole 231 during the sliding process. Similarly, a second through hole 241 penetrating through two opposite ends of the second baffle 240 is formed in the second baffle 240, one end of the second through hole 241 faces the piston 220 and is communicated with the cavity between the piston 220 and the second baffle 240, and the other end of the second through hole 241 faces the outside of the plugging device 200 and is communicated with the outside, so that the piston 220 can exhaust or suck air through the second through hole 241 in the sliding process.
It should be noted that the first via 231 and the second via 241 may be straight holes or opposite-shaped holes with a bending angle, and the number of the first via 231 and the second via 241 may be set according to actual requirements, and may be one or more, and the shape and the number of the first via 231 and the second via 241 are not particularly limited in this embodiment.
Further, in this embodiment, the first baffle 230 is plugged at the first end of the housing 210, the communication between the two opposite ends of the first baffle 230 is realized only through the first via hole 231, the first via hole 231 is a damping hole, the damping hole is a slender small hole structure, and the ratio of the aperture to the length of the damping hole is usually greater than 4, so that a pressure difference is formed between the two ends of the first baffle 230 where the damping hole is located, and the piston 220 is buffered, so that the piston tooling is more stable. In addition, when performing rust prevention treatment, the thin-walled part 100 after the plugging device 200 is installed needs to be dipped into an electrolyte for galvanizing or dipped into a paint liquid for electrophoretic painting, so that the damping hole can also play a role of reducing the electrolyte or the paint liquid from entering the cavity between the first baffle 230 and the piston 220.
In addition, a piston rod 221 extending toward the position of the second shutter 240 is fixed to the piston 220, and the piston rod 221 is a straight rod and is parallel to the axis of the first through hole 211. The fixing manner of the piston rod 221 and the piston 220 may be a threaded connection, an adhesive connection, or an integral molding, and the embodiment is not particularly limited. The second baffle 240 is provided with a second through hole 242 through which the piston rod 221 passes through the second baffle 240, the second through hole 242 is a straight hole, an axis of the second through hole 242 is collinear with an axis of the piston rod 221, and a length of the piston rod 221 is greater than or equal to a distance between the first baffle 230 and the second baffle 240, so that the piston rod 221 can pass through the second through hole 242 when the piston 220 slides to any position. The second through hole 242 can guide the piston rod 221 and the piston 220, and the piston 220 is prevented from being clamped in the first through hole 211 due to the fact that the piston 220 is overturned in the sliding process of the first through hole 211.
As shown in fig. 7, in some embodiments, the first baffle 230 is integrally formed with the housing 210 to improve the sealing at the junction of the first baffle 230 and the housing 210.
As shown in fig. 4, further, a sealing ring 250 is fixed on the outer shell 210, the sealing ring 250 is an end-to-end annular member made of elastic rubber, the sealing ring 250 is stretched and fixed on the outer wall of the outer shell 210 by the elasticity of the sealing ring 250, so that there is no gap between the sealing ring 250 and the outer shell 210, and when the outer shell 210 is inserted into the end of the first cavity 111, the sealing ring 250 can also be pressed and sealed with the inner wall of the first cavity 111, thereby further improving the sealing performance between the outer shell 210 and the first cavity 111.
In this embodiment, the outer wall of the housing 210 is provided with an inward recessed annular groove 212, the annular groove 212 is connected end to end around the outer wall of the housing 210, the width of the annular groove 212 is adapted to the diameter of the sealing ring 250, so that a part of the sealing ring 250 is fixed in the annular groove 212 in a tightening manner, and the sealing ring 250 is prevented from moving, and meanwhile, the other part of the sealing ring 250 protrudes out of the annular groove 212, so that the sealing ring 250 can be ensured to be sealed with the inner wall of the first cavity 111 in a pressing manner.
In some embodiments, the annular groove 212 may not be provided, and the sealing ring 250 may be fixed to the outer wall of the housing 210 by bonding, but such fixing may cause the sealing ring 250 to move when the housing 210 is inserted into the first cavity 111.
In some embodiments, the sealing ring 250 may not be provided, and the sealed and fixed connection between the housing 210 and the first cavity 111 may be achieved by applying a sealant on an outer wall of the housing 210 and/or applying a sealant on an inner wall of the first cavity 111, or the housing 210 and an end of the first cavity 111 may be fixedly connected and sealed in an interference fit manner.
Furthermore, the outer wall of the casing 210 in this embodiment is provided with two annular grooves 212, the two annular grooves 212 are disposed at intervals and respectively close to two ends of the casing 210, and a sealing ring is fixed in each annular groove 212 by tightening, so as to provide a better sealing effect between the first cylinder 215 and the closed section 110. Of course, in actual use, only one annular groove 212 or more annular grooves 212 may be provided.
For the thin-wall part 100 which needs to be immersed into electrolyte or paint liquid for rust prevention treatment, two plugging devices 200 are needed, and the second end of the shell 210 of the plugging device 200 is respectively inserted and fixed at two ends of the first cavity 111 of the thin-wall part 100, so that the interior of the first cavity 111 is completely sealed and a closed cavity is formed, when the thin-wall part 100 fixed with the plugging device 200 is subjected to rust prevention treatment, when the air pressure in the closed cavity is increased or reduced due to the change of the external temperature, the piston 220 in the plugging device 200 can slide along the first through hole 211 under the action of the air pressure in the closed cavity, the air pressure in the closed cavity is kept stable by increasing or reducing the volume of the closed cavity, and the deformation of the thin-wall part due to the fact that the air pressure in the closed cavity is too large or too small is avoided.
In addition, preferably, the first end of the housing 210 is flush with the end of the closed cross section of the thin-walled part 100, so that the housing 210 can cover and shield the end of the first cavity 111, thereby preventing the cavity wall (i.e. the inner wall of the closed cross section 110) of the first cavity 111 from contacting with the outside air or rainwater, thereby improving the corrosion prevention effect at the two ends of the first cavity 111, and the middle part of the first cavity 111 forms a sealed cavity through the pistons 220 of the two plugging devices 200, so that the sealed cavity cannot contact with the outside air or rainwater, thereby preventing the inner wall of the whole first cavity 111 from contacting with the outside cavity or rainwater, and thus improving the service life of the thin-walled part 100 after being subjected to rust prevention treatment and loading.
The rust prevention treatment method of the plugging device in the embodiment comprises the following steps:
s1, sequentially sleeving the sealing rings in the annular grooves of the shell in a stretched manner until each annular groove is provided with a sealing ring to obtain a plugging device;
s2, inserting one end of the two plugging devices, which is fixed with the second baffle, into the end parts of the two opposite ends of the first cavity which is formed by enclosing the closed section of the thin-wall part respectively, gradually pushing the plugging devices until the end of the shell, which is fixed with the first baffle, is flush with the end part of the thin-wall part, and sealing between the shell and the inner wall of the first cavity is realized by utilizing a sealing ring;
s3: and (3) immersing the thin-wall part fixed with the sealing device into electrolyte according to a conventional galvanizing process for galvanizing or immersing the thin-wall part fixed with the sealing device into paint liquid according to a conventional paint process for electrophoretic painting to obtain the thin-wall part subjected to the galvanizing or paint process.
Example two
As shown in fig. 8 and 9, in the present embodiment, the first end of the housing 210 is provided with the first groove 213, the second end of the housing 210 is provided with the second groove 214, and the first groove 213 is not communicated with the second groove 214, so as to reduce the weight of the housing 210, further reduce the manufacturing cost of the housing 210, and at the same time, facilitate reducing the total weight of the whole plugging device 200 and the total weight of the thin-walled part 100 after the plugging device 200 is installed, and facilitate loading the thin-walled part 100.
Specifically, in this embodiment, the number of the first grooves 213 and the second grooves 214 is plural, and the first grooves 213 and the second grooves 214 are both located outside the first through hole 211 and divide the housing 210 into a first cylinder 215, a second cylinder 216 located inside the first cylinder 215, and a connecting portion 217 connecting the first cylinder 215 and the second cylinder 216, where the first through hole 211 is located at the center of the second cylinder 216. The connecting portion 217 not only can serve to connect and fix the first cylinder 215 and the second cylinder 216, but also can separate the first groove 213 and the second groove 214 between the first cylinder 215 and the second cylinder 216, thereby preventing the first groove 213 from communicating with the second groove 214.
The rust prevention treatment method of the plugging device in the embodiment comprises the following steps:
s1, sequentially sleeving the sealing rings in the annular grooves of the shell in a stretched manner until each annular groove is provided with a sealing ring to obtain a plugging device;
s2, inserting one end of the two plugging devices, which is fixed with the second baffle, into the end parts of the two opposite ends of the first cavity which is formed by enclosing the closed section of the thin-wall part respectively, gradually pushing the plugging devices until the end of the shell, which is fixed with the first baffle, is flush with the end part of the thin-wall part, and sealing between the shell and the inner wall of the first cavity is realized by utilizing a sealing ring;
s3: and (3) immersing the thin-wall part fixed with the sealing device into electrolyte according to a conventional galvanizing process for galvanizing or immersing the thin-wall part fixed with the sealing device into paint liquid according to a conventional paint process for electrophoretic painting to obtain the thin-wall part subjected to the galvanizing or paint process.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples described in this specification can be combined and combined by those skilled in the art.

Claims (10)

1. An occlusion device for occluding a first cavity defined by a closed cross-section of a part, the occlusion device comprising:
the shell is used for being fixedly inserted into the end part of the first cavity, a first end and a second end which are opposite to each other and a first through hole which penetrates through the first end and the second end are arranged in the shell, and the shape of the side wall of the shell is matched with the shape of the inner wall of the first cavity; and the number of the first and second groups,
and the piston slides in the first through hole and is in sealing connection with the inner wall of the first through hole.
2. The occlusion device of claim 1, further comprising first and second opposed baffles, each of the first and second baffles being fixedly coupled to the housing and positioned in a sliding path of the piston, the piston sliding between the first and second baffles.
3. The occlusion device of claim 2, wherein the first baffle is secured to a first end of the housing, the first baffle defining a first aperture extending through the first baffle toward the piston, the second baffle being secured to a second end of the housing, the second baffle defining a second aperture extending through the second baffle toward the piston.
4. The occlusion device of claim 3, wherein the first baffle occludes the first through hole, and the first through hole is a damper hole.
5. The occlusion device of claim 4, wherein the first baffle is integrally formed with the housing.
6. The occlusion device of claim 2, wherein a piston rod is fixedly connected to an end of the piston facing the second baffle, and the second baffle is provided with a second through hole for the piston rod to pass through.
7. The occlusion device of claim 1, wherein a sealing ring is secured to a sidewall of said housing and is disposed circumferentially about said housing.
8. The occlusion device of claim 7, wherein said housing has a side wall defining an annular groove, said sealing ring being secured within said annular groove.
9. The occlusion device of any of claims 1-8, wherein the first end of the housing defines a first recess;
and/or a second groove is formed in the second end of the shell.
10. A thin-walled part having a first cavity enclosed by a closed cross-section, wherein the closure device of any one of claims 1 to 9 is secured to each end of the first cavity.
CN202111209931.9A 2021-10-18 2021-10-18 Plugging device and part Pending CN114087360A (en)

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Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4789165A (en) * 1987-11-16 1988-12-06 General Motors Corporation Pressure compensating seal
US5029401A (en) * 1989-02-08 1991-07-09 Smiths Industries Public Limited Company Seals and apparatus including seals
CN1183525A (en) * 1996-11-22 1998-06-03 都智伟 Sealing material and method and device for sealing fit clearance by using same
WO2004076239A1 (en) * 2003-02-28 2004-09-10 Daimlerchrysler Ag Water drainage system for a car body cavity
TW200837297A (en) * 2006-11-03 2008-09-16 Freudenberg Carl Kg Sealing ring, cap with sealing ring and pneumatic cylinder with cap and sealing ring
CN101365619A (en) * 2006-02-16 2009-02-11 Itw汽车产品有限两合公司 A sealing plug with a pressure-compensating chamber
CN203705977U (en) * 2013-12-20 2014-07-09 上海科勒电子科技有限公司 Internal pressure regulating device
CN204805521U (en) * 2015-05-27 2015-11-25 江阴市巨匠文化创意发展有限公司 Outer anticorrosive subassembly of spraying of interior isolation
CN204805524U (en) * 2015-05-27 2015-11-25 江阴市巨匠文化创意发展有限公司 Seal assembly with fold
JP2016530442A (en) * 2013-08-20 2016-09-29 ウエスチングハウス・エレクトリック・カンパニー・エルエルシー Pump seal with thermally retractable actuator
CN109281890A (en) * 2018-11-09 2019-01-29 湖南师范大学 A kind of hydraulic cylinder combined sealing structure and hydraulic cylinder
CN109737205A (en) * 2019-03-07 2019-05-10 兰州理工大学 A kind of dynamic sealing position compensation device
CN210769939U (en) * 2019-10-25 2020-06-16 湖北远程汽车部件有限公司 Double-connection hub brake drum device

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4789165A (en) * 1987-11-16 1988-12-06 General Motors Corporation Pressure compensating seal
US5029401A (en) * 1989-02-08 1991-07-09 Smiths Industries Public Limited Company Seals and apparatus including seals
CN1183525A (en) * 1996-11-22 1998-06-03 都智伟 Sealing material and method and device for sealing fit clearance by using same
WO2004076239A1 (en) * 2003-02-28 2004-09-10 Daimlerchrysler Ag Water drainage system for a car body cavity
CN101365619A (en) * 2006-02-16 2009-02-11 Itw汽车产品有限两合公司 A sealing plug with a pressure-compensating chamber
TW200837297A (en) * 2006-11-03 2008-09-16 Freudenberg Carl Kg Sealing ring, cap with sealing ring and pneumatic cylinder with cap and sealing ring
JP2016530442A (en) * 2013-08-20 2016-09-29 ウエスチングハウス・エレクトリック・カンパニー・エルエルシー Pump seal with thermally retractable actuator
CN203705977U (en) * 2013-12-20 2014-07-09 上海科勒电子科技有限公司 Internal pressure regulating device
CN204805521U (en) * 2015-05-27 2015-11-25 江阴市巨匠文化创意发展有限公司 Outer anticorrosive subassembly of spraying of interior isolation
CN204805524U (en) * 2015-05-27 2015-11-25 江阴市巨匠文化创意发展有限公司 Seal assembly with fold
CN109281890A (en) * 2018-11-09 2019-01-29 湖南师范大学 A kind of hydraulic cylinder combined sealing structure and hydraulic cylinder
CN109737205A (en) * 2019-03-07 2019-05-10 兰州理工大学 A kind of dynamic sealing position compensation device
CN210769939U (en) * 2019-10-25 2020-06-16 湖北远程汽车部件有限公司 Double-connection hub brake drum device

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
孙桂林等: "《3D打印先进技术及应用》", 30 April 1989, 中国铁道出版社, pages: 180 - 21 *

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