Plugging device for cavity holes

Abstract

The utility model relates to a plugging device technical field provides a kind of for cavity hole's plugging device, including plugging assembly and elastic piece, plugging assembly includes first plugging piece and second plugging piece, first plugging piece and second plugging piece sliding connection, to make plugging assembly switch between plugging state and shrinkage state, in plugging state, the circumferential profile of plugging assembly is consistent with the circumferential profile of cavity hole, the circumferential side wall of plugging assembly can be with the circumferential side wall of cavity hole, in shrinkage state, plugging assembly's circumferential side wall and the circumferential side wall between cavity hole have gap;Elastic piece is located between first plugging piece and second plugging piece, for making plugging assembly have the tendency to switch to plugging state.Such, when plugging assembly is placed in cavity hole, plugging assembly can be plugged to cavity hole, avoid foreign matter to enter cavity.When plugging assembly is needed to be detached from cavity hole, plugging assembly can be switched to shrinkage state and be removed, convenient operation.

Description

Technical Field

[0001] This utility model relates to the field of sealing device technology, and provides a sealing device for cavities and holes. Background Technology

[0002] In railway rolling stock, the underframe, as a crucial component supporting the entire car body, is undeniably important. The main body of the EMU underframe is assembled and welded from components such as side beams, end frames, central crossbeams, and floor plates. Among these, the sleeper beams and traction beams constituting the end frames are hollow profiles, with the interior of these hollow profiles coated with a primer that provides corrosion protection and other special functions.

[0003] For hollow profiles with holes in the sidewalls that connect to the internal cavity, waste materials such as consumables generated during welding and grinding operations can fall into the internal cavity through these holes. These foreign objects can only be removed by workers using high-pressure air. Furthermore, the waste materials entering the internal cavity can damage the primer, requiring specialized repair. The narrow internal cavity also limits the accessibility of repair tools, making repair difficult and inefficient.

[0004] Therefore, how to solve the problem that foreign objects can easily enter the internal cavity through the holes in the sidewall of the cavity when processing parts with cavities has become an important technical problem for those skilled in the art. Utility Model Content

[0005] This utility model provides a sealing device for cavities and holes, which solves the defect that foreign objects can easily enter the internal cavity through holes in the side wall of the cavity when processing parts with cavities. It ensures the cleanliness of the internal cavity of the parts, avoids damage to the primer of the internal cavity by foreign objects, avoids the process of cleaning foreign objects and repairing primer, and improves processing efficiency.

[0006] This utility model provides a sealing device for cavities and holes, comprising: A sealing assembly includes a first sealing element and a second sealing element, wherein the first sealing element and the second sealing element are slidably connected to allow the sealing assembly to switch between a sealing state and a retracted state. In the sealing state, the circumferential contour of the sealing assembly is consistent with the circumferential contour of the cavity orifice, and the circumferential sidewall of the sealing assembly can abut against the circumferential sidewall of the cavity orifice. In the retracted state, there is a gap between the circumferential sidewall of the sealing assembly and the circumferential sidewall of the cavity orifice. An elastic element is disposed between the first sealing element and the second sealing element, the elastic element being used to give the sealing assembly a tendency to switch to the sealing state.

[0007] According to the present invention, a sealing device for cavities and holes is provided, wherein a sliding rod is provided on the first sealing member and a sliding hole is provided on the second sealing member, the axis of the sliding rod coincides with the axis of the sliding hole, the sliding rod is partially located in the sliding hole, and the sliding rod and the sliding hole are slidably engaged.

[0008] According to the present invention, a sealing device for cavities and holes is provided, wherein the elastic element comprises: A compression spring is sleeved on the outside of the slide rod, and the two ends of the compression spring abut against the first sealing member and the second sealing member, respectively.

[0009] According to the present invention, a sealing device for cavities and holes is provided, wherein at least two slide rods are provided, the distribution direction of each slide rod is perpendicular to the axis of the slide rod, and each slide rod corresponds to a slide hole and a compression spring.

[0010] According to the present invention, a sealing device for cavities and holes is provided, wherein the sealing assembly further includes: A first limiting structure is disposed between the first sealing member and the second sealing member, and the first limiting structure is used to limit the relative sliding range of the first sealing member and the second sealing member.

[0011] According to the sealing device for cavities and holes provided by this utility model, the first limiting structure includes: A limiting hole is provided on the first sealing member. The limiting hole is a strip-shaped hole, and the length direction of the strip-shaped hole is parallel to the relative sliding direction of the first sealing member and the second sealing member. A limiting block is fixedly disposed on the second sealing member. The limiting block is located inside the limiting hole, and the limiting block is slidably engaged with the limiting hole.

[0012] The sealing device for cavities and holes provided by this utility model further includes: A control lever is fixedly provided on at least one of the first sealing member and the second sealing member.

[0013] According to the present invention, a sealing device for cavities and holes is provided, wherein the first sealing element and the second sealing element are made of nylon.

[0014] According to the present invention, a sealing device for a cavity orifice is provided, wherein the first sealing member and the second sealing member are provided with a second limiting structure, the second limiting structure being used to abut against the outer end wall of the cavity orifice.

[0015] According to the present invention, a sealing device for cavities and holes is provided, wherein the circumferential sidewalls of the first sealing member and the second sealing member are provided with a friction-enhancing layer.

[0016] This utility model provides a sealing device for cavities and orifices, comprising a sealing assembly and an elastic element. The sealing assembly includes a first sealing element and a second sealing element, which are slidably connected to allow the sealing assembly to switch between a sealing state and a retracted state. When the sealing assembly is in the sealing state, its circumferential contour matches the circumferential contour of the cavity orifice, and its circumferential sidewall abuts against the circumferential sidewall of the cavity orifice, thereby sealing the cavity and preventing foreign objects from entering. When the sealing assembly is in the retracted state, a gap exists between the circumferential sidewall of the sealing assembly and the circumferential sidewall of the cavity orifice, allowing the sealing assembly to be removed from the cavity orifice. The elastic element is disposed between the first and second sealing elements. The elastic element provides a tendency for the sealing assembly to switch to the sealing state, ensuring that the circumferential sidewall of the sealing assembly remains firmly against the circumferential sidewall of the cavity orifice, thus ensuring the stability of the sealing assembly and the reliability of the sealing effect. With this setup, when it is necessary to seal the cavity orifice, the sealing component is first switched to the retracted state, placed inside the cavity orifice, and then switched to the sealing state so that the circumferential sidewall of the sealing component presses against the circumferential sidewall of the cavity orifice, thereby sealing the cavity orifice. This effectively prevents foreign objects from entering the cavity through the cavity orifice, solving the problem that foreign objects can easily enter the internal cavity through the holes in the cavity sidewall when processing parts with cavities.

[0017] In addition, when it is necessary to remove the sealing component from the cavity, first switch the sealing component to the retracted state to create a gap between the circumferential sidewall of the sealing component and the circumferential sidewall of the cavity, and then apply force to the sealing component to remove it from the cavity. The operation is convenient. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is a structural schematic diagram of the sealing device for cavities and holes provided by this utility model from one perspective.

[0020] Figure 2 This is a structural schematic diagram of the sealing device for cavities and holes provided by this utility model from another perspective.

[0021] Figure 3 This is a side view of the sealing device for cavities and holes provided by this utility model.

[0022] Figure label: 1. First sealing component; 2. Second sealing component; 3. Sliding rod; 4. Sliding hole; 5. Compression spring; 6. Limiting hole; 7. Operating lever. Detailed Implementation

[0023] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0024] The following is combined with Figures 1 to 3 This invention describes a sealing device for cavities and holes.

[0025] like Figures 1 to 3 As shown in the figure, the sealing device for cavities and holes provided in this embodiment of the present invention includes a sealing component and an elastic element.

[0026] Specifically, the sealing assembly includes a first sealing element 1 and a second sealing element 2, which are slidably connected. When the first sealing element 1 and the second sealing element 2 slide relative to each other, they either move closer to each other or further away from each other.

[0027] As the first sealing element 1 and the second sealing element 2 move away from each other, the circumferential profile dimension of the sealing assembly formed by the first sealing element 1 and the second sealing element 2 gradually increases. When the circumferential profile dimension of the sealing assembly is consistent with the circumferential profile dimension of the cavity, the sealing assembly is said to be in a sealing state.

[0028] When the sealing component is switched to the sealing state, the circumferential contour of the sealing component is consistent with the circumferential contour of the cavity, and the circumferential sidewall of the sealing component can abut against the circumferential sidewall of the cavity, thereby sealing the cavity and preventing foreign objects from entering the cavity.

[0029] It should be noted that the first sealing component 1 and the second sealing component 2 can specifically be sealing blocks or sealing plates, and their shapes need to be determined according to the shape of the cavity. Taking a circular cavity as an example, the outer edges of the first sealing component 1 and the second sealing component 2 need to be designed as arcs, and it should be ensured that when the sealing assembly is in the sealing state, the circumferential contour of the sealing assembly is circular, and the diameter of the sealing assembly is equal to the diameter of the cavity.

[0030] When the first sealing element 1 and the second sealing element 2 approach each other, the circumferential profile dimension of the sealing assembly formed by the first sealing element 1 and the second sealing element 2 decreases. When the circumferential profile dimension of the sealing assembly decreases to the point that there is a gap between the circumferential sidewall of the sealing assembly and the circumferential sidewall of the cavity, the sealing assembly is said to be in a contracted state.

[0031] When the sealing assembly is switched to the retracted state, there is a gap between the circumferential sidewall of the sealing assembly and the circumferential sidewall of the cavity, allowing the sealing assembly to be removed from the cavity.

[0032] An elastic element is disposed between the first sealing element 1 and the second sealing element 2. The elastic element is used to make the sealing assembly tend to switch to the sealing state, so that the circumferential sidewall of the sealing assembly is kept in contact with the circumferential sidewall of the cavity, thereby ensuring the stability of the sealing assembly and the reliability of the sealing effect.

[0033] With this setup, when it is necessary to seal the cavity orifice, the sealing component is first switched to the retracted state, placed inside the cavity orifice, and then switched to the sealing state so that the circumferential sidewall of the sealing component presses against the circumferential sidewall of the cavity orifice, thereby sealing the cavity orifice. This effectively prevents foreign objects from entering the cavity through the cavity orifice, solving the problem that foreign objects can easily enter the internal cavity through the holes in the cavity sidewall when processing parts with cavities.

[0034] In addition, when it is necessary to remove the sealing component from the cavity, first switch the sealing component to the retracted state to create a gap between the circumferential sidewall of the sealing component and the circumferential sidewall of the cavity, and then apply force to the sealing component to remove it from the cavity. The operation is convenient.

[0035] In this embodiment of the invention, a sliding rod 3 is provided on the first sealing member 1 and a sliding hole 4 is provided on the second sealing member 2. The axis of the sliding rod 3 coincides with the axis of the sliding hole 4, and part of the sliding rod 3 is located inside the sliding hole 4, allowing the sliding rod 3 and the sliding hole 4 to slide together.

[0036] The cooperation between the sliding rod 3 and the sliding hole 4 allows the first sealing component 1 and the second sealing component 2 to slide relative to each other only along the axial direction of the sliding rod 3. The cooperation between the sliding rod 3 and the sliding hole 4 guides the sliding cooperation between the first sealing component 1 and the second sealing component 2, thereby improving the stability and reliability of the sealing assembly.

[0037] In this embodiment, the elastic element includes a compression spring 5, which is sleeved on the outside of the slide rod 3, and the two ends of the compression spring 5 abut against the first sealing element 1 and the second sealing element 2 respectively.

[0038] When the compression spring 5 is in a compressed state, it can exert an elastic force on the first sealing element 1 and the second sealing element 2. The compression spring 5 exerts a force on the first sealing element 1 in a direction away from the second sealing element 2, and exerts a force on the second sealing element 2 in a direction away from the first sealing element 1. Under the action of the compression spring 5, the first sealing element 1 and the second sealing element 2 tend to move away from each other.

[0039] The slide bar 3 can guide the extension and retraction of the compression spring 5, prevent the compression spring 5 from becoming unstable, tilted, or stuck, improve the stability of the compression spring 5, and help extend the service life of the compression spring 5.

[0040] In some embodiments, at least two slide rods 3 are provided, with each slide rod 3 spaced apart and the distribution direction of each slide rod 3 perpendicular to its axis. Each slide rod 3 corresponds to a sliding hole 4. Through the cooperation of at least two slide rods 3 and sliding holes 4, the smooth sliding of the first sealing member 1 and the second sealing member 2 can be improved.

[0041] Each slide bar 3 corresponds to a compression spring 5. At least two compression springs 5 ​​are provided between the first sealing member 1 and the second sealing member 2, which can increase the elastic force acting on the first sealing member 1 and the second sealing member 2, thereby increasing the clamping force of the sealing assembly in the sealing state against the circumferential sidewall of the cavity and improving the stability of the sealing assembly.

[0042] In a further embodiment, the sealing assembly further includes a first limiting structure, which is disposed between the first sealing member 1 and the second sealing member 2, and is used to limit the relative sliding range of the first sealing member 1 and the second sealing member 2.

[0043] The first limiting structure can limit the first sealing element 1 and the second sealing element 2 from moving away from each other when they are far apart, so as to avoid the separation gap between the first sealing element 1 and the second sealing element 2, or to avoid the problem of the first sealing element 1 and the second sealing element 2 slipping off each other.

[0044] The first limiting structure can also limit the first sealing member 1 and the second sealing member 2 from getting too close to each other when they approach each other, thus avoiding the problem of the compression spring 5 being crushed.

[0045] In a specific embodiment, the first limiting structure includes a limiting hole 6 and a limiting block.

[0046] The limiting hole 6 is provided on the first sealing member 1. The limiting hole 6 is a strip-shaped hole, and the length direction of the strip-shaped hole is parallel to the relative sliding direction of the first sealing member 1 and the second sealing member 2.

[0047] The limiting block is fixedly installed on the second sealing component 2, the limiting block is located inside the limiting hole 6, and the limiting block and the limiting hole 6 are in sliding fit.

[0048] When the first sealing element 1 and the second sealing element 2 slide relative to each other, the limiting block slides within the limiting hole 6. When the first sealing element 1 and the second sealing element 2 move away from each other until the limiting block slides to one end of the limiting hole 6, the interaction between the limiting block and the end of the limiting hole 6 prevents the first sealing element 1 and the second sealing element 2 from moving further away from each other. When the first sealing element 1 and the second sealing element 2 move closer to each other until the limiting block slides to the other end of the limiting hole 6, the interaction between the limiting block and the end of the limiting hole 6 prevents the first sealing element 1 and the second sealing element 2 from moving further closer to each other.

[0049] In a further embodiment, the sealing device for the cavity further includes a control lever 7, with at least one of the first sealing member 1 and the second sealing member 2 fixedly provided with the control lever 7. The control lever 7 allows force to be applied to one of the first sealing member 1 and the second sealing member 2, causing it to slide relative to the other, making operation convenient.

[0050] The control lever 7 can be installed only on the first sealing member 1, or only on the second sealing member 2, or simultaneously on both the first sealing member 1 and the second sealing member 2. The specific method is not limited.

[0051] In this embodiment, the material of the first sealing component 1 and the material of the second sealing component 2 are nylon.

[0052] Nylon has high strength and toughness, excellent wear resistance, and low density, which helps to reduce the weight of sealing components and reduce the labor intensity of users.

[0053] In this embodiment, the first sealing member 1 and the second sealing member 2 are provided with a second limiting structure, which is used to abut against the outer end wall of the cavity hole.

[0054] The interaction between the second limiting structure and the outer end wall of the cavity hole can prevent the sealing component from completely entering the cavity hole, avoid the sealing component from falling into the cavity, and improve the stability of the sealing component in the cavity hole.

[0055] The second limiting structure may be, but is not limited to, a raised edge disposed at the end edge of the first sealing member 1 and the second sealing member 2. When the sealing assembly is in the sealing state, the circumferential contour of the raised edge is located outside the cavity hole.

[0056] In this embodiment, the circumferential sidewalls of the first sealing member 1 and the second sealing member 2 are provided with a friction-enhancing layer. The friction-enhancing layer can increase the friction between the first sealing member 1 and the sidewall of the cavity, as well as the friction between the second sealing member 2 and the sidewall of the cavity, thereby improving the stability of the sealing assembly in the cavity.

[0057] The aforementioned friction-enhancing layer may be, but is not limited to, rubber.

[0058] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A sealing device for cavities and openings, characterized in that, include: The sealing assembly includes a first sealing element (1) and a second sealing element (2), wherein the first sealing element (1) and the second sealing element (2) are slidably connected to allow the sealing assembly to switch between a sealing state and a contracted state. In the sealing state, the circumferential profile of the sealing assembly is consistent with the circumferential profile of the cavity, and the circumferential sidewall of the sealing assembly can abut against the circumferential sidewall of the cavity. In the contracted state, there is a gap between the circumferential sidewall of the sealing assembly and the circumferential sidewall of the cavity. An elastic element is disposed between the first sealing element (1) and the second sealing element (2), the elastic element being used to give the sealing assembly a tendency to switch to the sealing state.

2. The sealing device for cavities and holes according to claim 1, characterized in that, The first sealing member (1) is provided with a sliding rod (3), and the second sealing member (2) is provided with a sliding hole (4). The axis of the sliding rod (3) coincides with the axis of the sliding hole (4). The sliding rod (3) is partially located inside the sliding hole (4), and the sliding rod (3) and the sliding hole (4) are in sliding fit.

3. The sealing device for cavities and holes according to claim 2, characterized in that, The elastic element includes: A compression spring (5) is sleeved on the outside of the slide rod (3), and the two ends of the compression spring (5) abut against the first sealing member (1) and the second sealing member (2) respectively.

4. The sealing device for cavities and holes according to claim 3, characterized in that, At least two slide rods (3) are provided, and the distribution direction of each slide rod (3) is perpendicular to the axis of the slide rod (3). Each slide rod (3) corresponds to a slide hole (4) and a compression spring (5).

5. The sealing device for cavities and holes according to claim 1, characterized in that, The sealing assembly also includes: A first limiting structure is disposed between the first sealing member (1) and the second sealing member (2), and the first limiting structure is used to limit the relative sliding range of the first sealing member (1) and the second sealing member (2).

6. The sealing device for cavities and holes according to claim 5, characterized in that, The first limiting structure includes: A limiting hole (6) is provided on the first sealing member (1). The limiting hole (6) is a strip hole, and the length direction of the strip hole is parallel to the relative sliding direction of the first sealing member (1) and the second sealing member (2). A limiting block is fixedly installed in the second sealing member (2). The limiting block is located inside the limiting hole (6), and the limiting block slides with the limiting hole (6).

7. The sealing device for cavities and openings according to any one of claims 1-6, characterized in that, Also includes: The control lever (7) is fixedly provided on at least one of the first sealing member (1) and the second sealing member (2).

8. The sealing device for cavities and openings according to any one of claims 1-6, characterized in that, The material of the first sealing component (1) and the second sealing component (2) is nylon.

9. The sealing device for cavities and openings according to any one of claims 1-6, characterized in that, The first sealing member (1) and the second sealing member (2) are provided with a second limiting structure, which is used to abut against the outer end wall of the cavity hole.

10. The sealing device for cavities and openings according to any one of claims 1-6, characterized in that, The first sealing member (1) and the second sealing member (2) are provided with a friction-enhancing layer on their circumferential sidewalls.

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