Rubber strip airtight performance testing device structure considering load effect

Abstract

The utility model belongs to the technical field of sealing performance testing, and particularly relates to a rubber strip airtight performance testing device structure considering a load effect. Through reasonable arrangement of the first structural component, the first structural component lug plate, the second structural component, the second structural component lug plate, the side sealing plate, the top cover plate, the rubber strip mounting groove, the air inlet hole and the air pressure detection hole, the overall structure is compact, the size is small, implementation is easy, the machining and manufacturing cost is low, and use and operation are convenient; the airtight performance testing efficiency of the rubber strip can be greatly improved; according to the utility model, the vertical load applying device and the load sensor are arranged and are matched with the supporting base plate and the supporting roller, so that the load is convenient to apply, the influence of structural load can be simulated, and the airtight performance of the rubber strip in an actual load working state can be tested.

Description

Technical Field

[0001] The utility model belongs to the technical field of sealing performance testing, and in particular relates to a rubber strip airtight performance testing device structure taking load action into consideration. Background Art

[0002] In recent years, the application of sealing rubber strips in the construction, automobile, train, ship and other industries has been increasing. The elastic modulus of rubber strips is small and the volume is almost incompressible. When multiple structural components are assembled, the rubber strips produce elastic deformation under the pressure of the assembled components, which can effectively close the connection gaps between different structural components, block the passage of air, liquid, etc., and conveniently and reliably form airtight and watertight spaces. However, under the action of external structural loads, the rubber strips will also produce overall deformation with the structural components, which has a certain impact on the sealing performance of the rubber strips.

[0003] The current rubber strip sealing performance test method is to assemble all components into a whole and then test based on the overall structure. The shortcomings of this method are:

[0004] 1. The inspection cycle is long, and the production of structural components and the overall assembly require a certain amount of time.

[0005] 2. The processing cost is high. Each test of the rubber strip requires the production of an integral structure, and the overall structure and components are difficult to reuse. Utility Model Content

[0006] The technical problem to be solved by the utility model is: in view of the deficiencies in the prior art, a rubber strip airtightness performance testing device structure taking load effects into consideration is provided, the overall structure is compact, the operation is convenient, and the efficiency of the rubber strip airtightness performance testing can be greatly improved.

[0007] The technical solution adopted by the utility model to solve the above technical problems is:

[0008] A rubber strip airtightness test device structure considering load action comprises a first structural component 10 and a second structural component 13 respectively arranged on the left and right sides of a cavity to be tested, wherein the bottoms of the first structural component 10 and the second structural component 13 are respectively connected with a first structural component ear plate 11 and a second structural component ear plate 14;

[0009] The first structural component ear plate 11 and the second structural component ear plate 14 are connected in an interlaced manner to form the bottom plate of the cavity to be tested, and a rubber strip 12 to be tested is installed between the first structural component ear plate 11 and the second structural component ear plate 14;

[0010] The front and rear ends of the test cavity are both provided with sealing plates 15, and the top is provided with a cover plate 16. The two ends of the upper surface of the cover plate 16 are respectively provided with an air inlet hole 17 and an air pressure detection hole 18. The middle part of the upper surface of the cover plate 16 is installed with a vertical load applying device 20 and a load sensor 21.

[0011] Furthermore, loading support seats are installed at the top center position and both ends of the bottom of the cavity to be tested, and the loading support seats are composed of two parallel supporting pads 22 and a supporting roller 23 arranged in the middle.

[0012] Furthermore, the load sensor 21 and the vertical load applying device 20 are sequentially installed above the loading support seat at the top of the cavity to be tested.

[0013] Furthermore, a rubber strip mounting groove 19 adapted to the rubber strip 12 to be detected is formed on the upper surface of the second structural component ear plate 14 , and the lower surface of the first structural component ear plate 11 is in close contact with the upper surface of the second structural component ear plate 14 .

[0014] Furthermore, the bottom surface of the ear plate 14 of the second structural component is flush with the bottom surface of the first structural component 10 .

[0015] Furthermore, the upper surface of the first structural component 10 is flush with the upper surface of the second structural component 13, and the cover plate 16 is connected to the upper surfaces of the first structural component 10 and the second structural component 13 by welding or structural adhesive bonding.

[0016] Furthermore, the width and height of the sealing plate 15 are adapted to the cavity to be tested, and the sealing plate 15 is connected to the inner wall of the cavity to be tested by welding or structural adhesive.

[0017] Furthermore, the sizes of the air inlet hole 17 and the air pressure detection hole 18 are adapted to the size of the cavity to be tested.

[0018] Compared with the prior art, the utility model has the following main advantages:

[0019] 1. The utility model provides a rubber strip airtightness performance test device structure considering the load effect. Through the reasonable arrangement of the first structural component, the first structural component ear plate, the second structural component, the second structural component ear plate, the side sealing plate, the top cover plate and the rubber strip installation groove, the air inlet hole and the air pressure detection hole, the overall structure is compact, the volume is small, it is easy to implement, the processing and manufacturing cost is low, and it is easy to use and operate, which can greatly improve the efficiency of the rubber strip airtightness performance test;

[0020] 2. The utility model is provided with a vertical load applying device and a load sensor, which cooperate with the supporting pad and the supporting roller, so that the load can be applied conveniently, and the influence of the structural load can be simulated to test the airtight performance of the rubber strip under the actual load working state. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the overall structure of the rubber strip airtightness testing device of the utility model;

[0022] Figure 2 This is a schematic diagram of the assembly of the rubber strip airtightness testing device of the utility model;

[0023] Figure 3 This is a schematic diagram of the installation of the rubber strip to be tested in the utility model;

[0024] Figure 4 It is a schematic diagram of the first structural component in the utility model;

[0025] Figure 5 It is a schematic diagram of the second structural component in the utility model.

[0026] In the figure: 10, first structural component; 11, ear plate of first structural component; 12, rubber strip to be tested; 13, second structural component; 14, ear plate of second structural component; 15, sealing plate; 16, cover plate; 17, air inlet hole; 18, air pressure detection hole; 19, rubber strip installation groove; 20, vertical load applying device; 21, load sensor; 22, support pad; 23, support roller. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the utility model. In addition, the technical features involved in each embodiment of the utility model described below can be combined with each other as long as they do not conflict with each other.

[0028] It should be pointed out that, according to the needs of implementation, the various steps / components described in this application can be split into more steps / components, and two or more steps / components or partial operations of steps / components can be combined into new steps / components to achieve the purpose of the present utility model.

[0029] Embodiment 1: This embodiment provides a rubber strip airtightness performance testing device structure considering load effect, such as Figures 1 to 5As shown, it comprises a first structural component 10 and a second structural component 13 respectively arranged on the left and right sides of the cavity to be tested, and the bottoms of the first structural component 10 and the second structural component 13 are respectively connected with a first structural component ear plate 11 and a second structural component ear plate 14;

[0030] The first structural component ear plate 11 and the second structural component ear plate 14 are connected in an interlaced manner to form the bottom plate of the cavity to be tested, and a rubber strip 12 to be tested is installed between the first structural component ear plate 11 and the second structural component ear plate 14;

[0031] The front and rear ends of the test cavity are both provided with sealing plates 15, and the top is provided with a cover plate 16. The two ends of the upper surface of the cover plate 16 are respectively provided with an air inlet hole 17 and an air pressure detection hole 18. The middle part of the upper surface of the cover plate 16 is installed with a vertical load applying device 20 and a load sensor 21.

[0032] Furthermore, loading support seats are installed at the top center position and both ends of the bottom of the cavity to be tested, and the loading support seats are composed of two parallel supporting pads 22 and a supporting roller 23 arranged in the middle.

[0033] Furthermore, the load sensor 21 and the vertical load applying device 20 are sequentially installed above the loading support seat at the top of the cavity to be tested.

[0034] Furthermore, a rubber strip mounting groove 19 adapted to the rubber strip 12 to be detected is formed on the upper surface of the second structural component ear plate 14 , and the lower surface of the first structural component ear plate 11 is in close contact with the upper surface of the second structural component ear plate 14 .

[0035] Furthermore, the bottom surface of the ear plate 14 of the second structural component is flush with the bottom surface of the first structural component 10 .

[0036] Furthermore, the upper surface of the first structural component 10 is flush with the upper surface of the second structural component 13, and the cover plate 16 is connected to the upper surfaces of the first structural component 10 and the second structural component 13 by welding or structural adhesive bonding.

[0037] Furthermore, the width and height of the sealing plate 15 are adapted to the cavity to be tested, and the sealing plate 15 is connected to the inner wall of the cavity to be tested by welding or structural adhesive.

[0038] Furthermore, the sizes of the air inlet hole 17 and the air pressure detection hole 18 are adapted to the size of the cavity to be tested.

[0039] Embodiment 2: This embodiment provides a rubber strip airtightness performance testing device structure considering load effect, such as Figures 1-2As shown, the first structural component 10, the first structural component ear plate 11, the second structural component 13, the second structural component ear plate 14, the sealing plate 15 and the cover plate 16 together form a cavity.

[0040] The cavity is sealed by welding or sealing adhesive except the contact surface between the first structural component ear plate 11 and the second structural component ear plate 14.

[0041] Furthermore, the rubber strip 12 to be tested is placed between the first structural component ear plate 11 and the second structural component ear plate 14, and there is no other sealing measure between the two ear plates except for the rubber strip.

[0042] Further, such as Figure 4 As shown, the first structural component 10 and the first structural component ear plate 11 are welded and connected to form a first substructure to be connected.

[0043] Further, such as Figure 5 As shown, the second structural component 13 and the second structural component ear plate 14 are welded and connected to form a second substructure to be connected, and a groove for placing the rubber strip 11 to be detected is arranged on the upper surface of the second structural component ear plate 14.

[0044] Further, such as Figure 3 As shown, the sealing plate 15 is disposed at the end of the cavity, the upper side of which is flush with the upper surfaces of the first structural component 10 and the second structural component 13, and the width of which is consistent with the width of the cavity.

[0045] Furthermore, the cover plate 16 is disposed on the top surface of the cavity, and is slightly longer than the first structural component 10 and the second structural component 13, and slightly wider than the first structural component 10, the second structural component 13 and the total width of the cavity, so as to facilitate mutual connection.

[0046] Furthermore, an air inlet hole 17 and an air pressure detection hole 18 are respectively provided at both ends of the cover plate 16 to realize pressurization and air pressure monitoring inside the cavity.

[0047] Furthermore, Figure 1 As shown, six support pads 22 and three support rollers 23 are used to form three sets of loading supports, wherein the support roller 23 is arranged between two support pads 22 and is located at 1 / 2 of the width of the support pad 22 in the width direction;

[0048] The assembled structure to be tested is placed on a hinge support consisting of a support pad 22 and a support roller 23 to simulate a simply supported boundary condition.

[0049] Furthermore, a set of loading supports consisting of a supporting pad 22 and a supporting roller 23 is arranged at 1 / 2 of the length of the upper surface of the structure to be tested, and a vertical load applying device 20 and a load sensor 21 are arranged on the loading support.

[0050] The cavity is pressurized through the air inlet hole 17 on the cover plate 16, and the air pressure in the cavity is monitored using the air pressure detection hole 18. The pressurization is stopped when the air pressure increases to the designed air pressure.

[0051] After the cavity air pressure reaches the design air pressure and stabilizes, a vertical load is applied to the structure to be tested through the vertical load applying device 20, and the load change is monitored by the load sensor 21. After the load increases to the design load, the load is maintained stable.

[0052] In addition, other methods can also be used to control the loading state of the structure to be tested. For example, the mid-span deflection of the structure to be tested can be used to reach the structural design displacement as a load holding control index.

[0053] Furthermore, after the vertical load reaches the design load and stabilizes, the pressure change inside the cavity is monitored through the pressure detection hole 18. After a certain detection time, the sealing performance of the rubber strip considering the structural load can be calculated through the cavity pressure change.

[0054] The specific assembly process is as follows:

[0055] The first structural component 10 and the first structural component ear plate 11 are welded to form a first substructure to be connected, wherein the length of the first structural component ear plate 11 is slightly smaller than the first structural component 10 .

[0056] The second structural component 13 and the second structural component ear plate 14 are welded to form a second substructure to be connected, wherein a rubber strip installation groove 19 is opened on the surface of the second structural component ear plate 14 near the cavity, and the cross-sectional size of the rubber strip installation groove is slightly smaller than the cross-sectional size of the rubber strip 12.

[0057] Assemble the substructure to be connected and the rubber strip 12, and connect the ear plates of the two substructures to be connected. After the assembly is completed, the rubber strip should be reliably filled in the ear plate 14 of the second structural component, and the upper surfaces of the two substructures to be connected should be flush.

[0058] Make a sealing plate 15, the size of which is consistent with the width and height of the cavity. Assemble the sealing plate and the assembled substructure to be connected, and reliably connect the sealing plate and the substructure to be connected by welding or structural adhesive and perform sealing. After installation, the upper surface of the sealing plate should be flush with the upper surface of the substructure to be connected.

[0059] A cover plate 16 is manufactured, and an air inlet hole 17 and an air pressure detection hole 18 are opened at both ends of the cover plate. The hole diameters need to be determined by the size of the equipment.

[0060] Assemble the cover plate and the assembled substructure, and use welding or structural adhesive to bond the two and perform sealing.

[0061] After the structural adhesive is completely cured, the structure to be tested is placed on two parallel support seats of the loading device. The support seats are composed of a support pad 22 and a support roller 23. A set of support seats is placed at the mid-span position of the structure to be tested, and a vertical load application device 20 and a load sensor 21 are set and fixed.

[0062] The cavity is pressurized by using the air inlet hole 17 on the cover plate 16, and the air pressure inside the cavity is monitored through the air pressure detection hole 18. The pressurization is stopped when the air pressure inside the cavity reaches the designed air pressure.

[0063] After the air pressure inside the cavity is stabilized to the design air pressure, a vertical load is applied to the structure to be tested using the vertical load applying device 20. When the load reaches the design load or the mid-span deflection of the structure to be tested reaches the design deflection, the load is maintained unchanged.

[0064] Check whether there is any leakage in the area other than the rubber strip. If there is leakage, it is necessary to perform repair welding or apply structural adhesive for sealing.

[0065] The air pressure inside the cavity is monitored through the air pressure detection hole 18, and the air pressure change within a certain period of time during the load holding stage of the structure to be tested is recorded, and the sealing performance of the rubber strip is calculated and determined.

[0066] Furthermore, all parts involved in this application that are not described in detail are the same as the prior art or are implemented using the prior art.

[0067] In summary:

[0068] 1. The utility model provides a rubber strip airtightness performance test device structure considering the load effect. Through the reasonable arrangement of the first structural component, the first structural component ear plate, the second structural component, the second structural component ear plate, the side sealing plate, the top cover plate and the rubber strip installation groove, the air inlet hole and the air pressure detection hole, the overall structure is compact, the volume is small, it is easy to implement, the processing and manufacturing cost is low, and it is easy to use and operate, which can greatly improve the efficiency of the rubber strip airtightness performance test;

[0069] 2. The utility model is provided with a vertical load applying device and a load sensor, which cooperate with the supporting pad and the supporting roller, so that the load can be applied conveniently, and the influence of the structural load can be simulated to test the airtight performance of the rubber strip under the actual load working state.

[0070] The above embodiments are only used to illustrate the design ideas and features of the utility model, and their purpose is to enable those skilled in the art to understand the content of the utility model and implement it accordingly. The protection scope of the utility model is not limited to the above embodiments. Therefore, any equivalent changes or modifications made based on the principles and design ideas disclosed by the utility model are within the protection scope of the utility model.

Claims

1. A rubber strip airtightness performance testing device structure considering load action, characterized in that: It comprises a first structural component (10) and a second structural component (13) respectively arranged on the left and right sides of a cavity to be tested, wherein the bottoms of the first structural component (10) and the second structural component (13) are respectively connected to a first structural component ear plate (11) and a second structural component ear plate (14); The first structural component ear plate (11) and the second structural component ear plate (14) are connected in an alternating manner to form the bottom plate of the cavity to be tested, and a rubber strip (12) to be tested is installed between the first structural component ear plate (11) and the second structural component ear plate (14); The front and rear ends of the chamber to be tested are both provided with sealing plates (15), and the top is provided with a cover plate (16). An air inlet hole (17) and an air pressure detection hole (18) are respectively provided at both ends of the upper surface of the cover plate (16), and a vertical load applying device (20) and a load sensor (21) are installed in the middle of the upper surface of the cover plate (16).

2. The structure of the rubber strip airtightness testing device considering load effect according to claim 1 is characterized in that: The top center position and both ends of the bottom of the chamber to be tested are both equipped with loading support seats, and the loading support seats are composed of two parallel supporting pads (22) and a supporting roller (23) arranged in the middle thereof.

3. The structure of the rubber strip airtightness testing device considering load effect according to claim 2 is characterized in that: The load sensor (21) and the vertical load applying device (20) are sequentially installed above the loading support seat at the top of the cavity to be tested.

4. The structure of the rubber strip airtightness testing device considering load effect according to claim 1 is characterized in that: The upper surface of the ear plate (14) of the second structural component is provided with a rubber strip mounting groove (19) adapted to the rubber strip (12) to be detected, and the lower surface of the ear plate (11) of the first structural component is in close contact with the upper surface of the ear plate (14) of the second structural component.

5. The structure of the rubber strip airtightness testing device considering load effect according to claim 4 is characterized in that: The bottom surface of the ear plate (14) of the second structural component is flush with the bottom surface of the first structural component (10).

6. The structure of the rubber strip airtightness testing device considering load effect according to claim 1 is characterized in that: The upper surface of the first structural component (10) is flush with the upper surface of the second structural component (13), and the cover plate (16) is connected to the upper surfaces of the first structural component (10) and the second structural component (13) by welding or structural adhesive bonding.

7. The structure of the rubber strip airtightness testing device considering load effect according to claim 1 is characterized in that: The width and height of the sealing plate (15) are both adapted to the cavity to be tested, and the sealing plate (15) is connected to the inner wall of the cavity to be tested by welding or structural adhesive bonding.

8. The structure of the rubber strip airtightness testing device considering load effect according to claim 1 is characterized in that: The sizes of the air inlet hole (17) and the air pressure detection hole (18) are adapted to the size of the cavity to be tested.

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