A kind of rubber expansion joint test device of main auxiliary pump coordination pressure regulating

Abstract

The utility model relates to the field of expansion joint test, specifically relates to a rubber expansion joint testing device of main and auxiliary pump coordinated pressure regulating, including transport vehicle and support platform, the transport vehicle sliding connection is in the below of support platform, the top of transport vehicle is fixed with rubber expansion joint main part, the top bolt connection of rubber expansion joint main part has test board, the middle position of support platform is connected with main pressure mechanism, the four edges of support platform close to main pressure mechanism sliding connection has auxiliary pressure mechanism, through the cooperation of main pressure mechanism and auxiliary pressure mechanism, main pressure mechanism can press the rubber expansion joint main part core area, auxiliary pressure mechanism can be targeted and act on its edge and four corners easy to be damaged parts, help to improve the traditional single pressure device test range limitation, the situation of one -sided result, simultaneously, the adaptive structure of main limiting board and first extension groove, auxiliary limiting board and second extension groove can reduce the possibility of pressing plate deviation in the pressing process.

Description

Technical Field

[0001] This utility model belongs to the field of expansion joint testing, specifically relating to a rubber expansion joint testing device with coordinated pressure regulation of main and auxiliary pumps. Background Technology

[0002] Rubber expansion joints, as key compensation components in pipeline systems, effectively absorb displacements caused by temperature changes and ground settlement due to their excellent elastic deformation capabilities. They also serve to reduce vibration and noise, and are widely used in chemical, water conservancy, HVAC, and water supply and drainage industries. Because rubber expansion joints operate in pressurized media environments for extended periods, their pressure-bearing and tensile properties directly affect the operational safety and stability of the entire pipeline system.

[0003] However, when testing rubber expansion joints, a single pressure method can only test the core area of ​​the rubber expansion joint, making it difficult to cover its edges and corners, which are easily damaged. This results in one-sided test results that cannot fully reflect the overall mechanical performance of the rubber expansion joint. On the other hand, the pressure position of the existing device is fixed, and it is impossible to flexibly adjust the pressure point according to different specifications and test requirements of rubber expansion joints, resulting in poor versatility. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the prior art, where the rubber expansion joint testing device has a single pressure application method and a fixed position, resulting in incomplete test coverage and poor adaptability. This invention aims to realize a rubber expansion joint testing device with coordinated pressure regulation by main and auxiliary pumps.

[0005] To achieve the above-mentioned objectives, the technical solution of this utility model is: a rubber expansion joint test device with coordinated pressure regulation of main and auxiliary pumps, comprising a transport vehicle and a support platform. The transport vehicle is slidably connected to the bottom of the support platform. A rubber expansion joint body is fixed to the top of the transport vehicle. A test plate is bolted to the top of the rubber expansion joint body. A main pressure mechanism is connected to the middle position of the support platform. A secondary pressure mechanism is slidably connected to the four sides of the support platform near the main pressure mechanism.

[0006] In the aforementioned test device for rubber expansion joint with coordinated pressure regulation of main and auxiliary pumps, multiple rollers are symmetrically rotatably connected to the bottom of the transport vehicle, and a track is provided below the transport vehicle, with the rollers slidably connected to the track.

[0007] In the aforementioned test device for rubber expansion joint with coordinated pressure regulation of main and auxiliary pumps, the bottom of the rubber expansion joint body is connected to the top of the transport vehicle by bolts, and the test plate is connected to the threaded hole reserved on the rubber expansion joint body by bolts.

[0008] In the above-mentioned rubber expansion joint test device with coordinated pressure adjustment of main and auxiliary pumps, the main pressure mechanism includes a main hydraulic pump, a main pressure plate and a first telescopic column. The main hydraulic pump is fixed at the middle position of the top of the support platform. The output end of the main hydraulic pump is fixedly connected to one end of the first telescopic column. The other end of the first telescopic column extends to the bottom of the support platform and is rotatably connected to the main pressure plate. Main limiting plates are fixed on both sides of the main pressure plate.

[0009] In the above-mentioned rubber expansion joint test device with coordinated pressure regulation of main and auxiliary pumps, the auxiliary pressure mechanism includes an auxiliary hydraulic pump, an auxiliary pressure plate, and a second telescopic column. Each auxiliary hydraulic pump has a slider connected to its bottom. The bottom of the support platform is provided with a limiting groove for the slider to slide. The slider is fixed to the top of the support platform by bolts. The second telescopic column passes through the limiting groove and is rotatably connected to the auxiliary pressure plate. Auxiliary limiting plates are fixed on both sides of the auxiliary pressure plate.

[0010] In the above-mentioned rubber expansion joint test device with coordinated pressure regulation of main and auxiliary pumps, a limiting groove adapted to the main pressure plate is provided in the middle position of the test plate, and first extension grooves for sliding of the main limiting plate are provided on both sides of the limiting groove.

[0011] In the above-mentioned test device for rubber expansion joint with coordinated pressure regulation of main and auxiliary pumps, the test plate has sliding grooves on its four sides for sliding of the auxiliary pressure plate, and the two ends of the sliding grooves have second extension grooves for sliding of the auxiliary limiting plate.

[0012] Compared with the prior art, the rubber expansion joint test device with coordinated pressure regulation of main and auxiliary pumps of this utility model has at least the following beneficial effects:

[0013] This utility model relates to a rubber expansion joint testing device with coordinated pressure regulation by a main and auxiliary pump. Through the coordinated operation of the main pressure mechanism and the auxiliary pressure mechanism, the main pressure mechanism can apply pressure to the core area of ​​the rubber expansion joint, while the auxiliary pressure mechanism can target vulnerable parts such as its edges and corners. This helps to improve the limited testing range and one-sided results of traditional single pressure devices. At the same time, the matching structure between the main limiting plate and the first extension groove, and between the auxiliary limiting plate and the second extension groove, can reduce the possibility of pressure plate displacement during the pressure application process, improve the accuracy of test data, and reduce the risk of unexpected damage to the rubber expansion joint.

[0014] The secondary pressure mechanism, through the sliding cooperation between the slider and the limiting groove of the support platform, can adjust the pressure position according to the testing requirements of rubber expansion joints of different specifications. With the help of bolt fixing, it can achieve precise positioning, which can break the limitation of the fixed pressure position of traditional devices. It is suitable for testing scenarios of various types of rubber expansion joints and helps to broaden the application range of the device.

[0015] Through the rotational connection of the main and auxiliary pressure mechanisms and the locking design of the limiting groove, a multi-directional synchronous stretching function with safe anti-detachment is achieved. It can accurately transmit tensile load to avoid test plate deviation, and supports coordinated stretching of the center and edge areas. It is also easy to operate and adaptable to different product specifications. It integrates tensile and compression functions into one, significantly improving test safety and efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a side view of the present invention;

[0018] Figure 3 This is a schematic diagram of the installation positions of the main and auxiliary pumps of this utility model;

[0019] Figure 4 This is the utility model Figure 3 Enlarged view of part A in the diagram;

[0020] Figure 5 This is a schematic diagram of the test board of this utility model.

[0021] In the picture: 1. Transport vehicle; 2. Rollers; 3. Main body of rubber expansion joint;

[0022] 4. Test plate; 401. Limiting groove; 402. First extension groove; 403. Sliding groove; 404. Second extension groove;

[0023] 5. Track;

[0024] 6. Support platform; 601. Limiting slide groove;

[0025] 7. Main hydraulic pump; 701. Main pressure plate; 702. Main limit plate; 703. First telescopic column;

[0026] 8. Auxiliary hydraulic pump; 801. Auxiliary pressure plate; 802. Second telescopic column; 803. Auxiliary limit plate;

[0027] 9. Slider. Detailed Implementation

[0028] The following description, in conjunction with the accompanying drawings and specific embodiments, provides a more detailed account of the rubber expansion joint test device with coordinated pressure regulation of the main and auxiliary pumps of this utility model.

[0029] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0030] This embodiment discloses a rubber expansion joint testing device with coordinated pressure regulation of main and auxiliary pumps. However, rubber expansion joint testing devices suffer from incomplete testing coverage and poor adaptability due to their single pressure application method and fixed location. (Refer to...) Figures 1-5 It mainly includes a transport vehicle 1 and a support platform 6. The transport vehicle 1 is slidably connected to the bottom of the support platform 6. A rubber expansion joint body 3 is fixed on the top of the transport vehicle 1. A test plate 4 is bolted to the top of the rubber expansion joint body 3. A main pressure mechanism is connected to the middle position of the support platform 6. A secondary pressure mechanism is slidably connected to the four sides of the support platform 6 near the main pressure mechanism.

[0031] Rapid positioning is achieved through the sliding cooperation between the transport vehicle 1 and the support platform 6. The rubber expansion joint body 3 on the top of the transport vehicle 1 and the test plate 4 are connected by bolts to ensure the stability of pressure transmission. The main pressure mechanism in the middle of the support platform 6 and the adjustable secondary pressure mechanism on all four sides work together to independently apply pressure to test the performance of the core area, and can also simulate the stress state of the edge area in a linkage manner to achieve accurate testing of multi-directional stress distribution and improve the ability of the test device to simulate actual working conditions.

[0032] Reference Figure 1 , Figure 4 and Figure 5 The bottom of the transport vehicle 1 is symmetrically connected to multiple rollers 2, and a track 5 is provided below the transport vehicle 1, with the rollers 2 slidably connected to the track 5. The bottom of the rubber expansion joint body 3 is connected to the top of the transport vehicle 1 by bolts, and the test plate 4 is connected to the threaded hole reserved on the rubber expansion joint body 3 by bolts.

[0033] The rollers 2 at the bottom of the transport vehicle 1 form a sliding guide system with the track 5 below. The rollers 2 move on the track 5 to ensure that the transport vehicle 1 is accurately positioned directly below the support platform 6. The rubber expansion joint body 3 and the test plate 4 are rigidly connected by bolts, which not only ensures the continuity of pressure transmission, but also facilitates quick disassembly and replacement of test components of different specifications.

[0034] Reference Figures 1-5The main pressure mechanism includes a main hydraulic pump 7, a main pressure plate 701, and a first telescopic column 703. The main hydraulic pump 7 is fixed at the middle position of the top of the support platform 6. The output end of the main hydraulic pump 7 is fixedly connected to one end of the first telescopic column 703. The other end of the first telescopic column 703 extends to the bottom of the support platform 6 and is rotatably connected to the main pressure plate 701. Main limit plates 702 are fixed on both sides of the main pressure plate 701.

[0035] The test plate 4 has a limiting groove 401 in the middle position that is compatible with the main pressure plate 701, and the limiting groove 401 has a first extension groove 402 on both sides for sliding of the main limiting plate 702.

[0036] The main pressure mechanism drives the first telescopic column 703 to extend and retract vertically through the main hydraulic pump 7, so that the main pressure plate 701 and the limiting groove 401 in the middle of the test plate 4 are engaged. When the main limiting plate 702 slides along the first extension groove 402, it not only constrains the horizontal offset of the main pressure plate 701, but also ensures that the pressure is evenly transmitted to the rubber expansion joint body 3. The rotating connection design between the main pressure plate 701 and the telescopic column achieves misalignment and engagement with the limiting groove 401 through rotation in the tension mode, forming a reliable mechanical lock, avoiding the risk of disengagement in the tension test of traditional devices, and improving the safety of the test process.

[0037] Reference Figures 1-5 The auxiliary pressure mechanism includes an auxiliary hydraulic pump 8, an auxiliary pressure plate 801, and a second telescopic column 802. Each auxiliary hydraulic pump 8 has a slider 9 connected to its bottom. The bottom of the support platform 6 has a limiting groove 601 for sliding the slider 9. The slider 9 is fixed to the top of the support platform 6 by bolts. The second telescopic column 802 passes through the limiting groove 601 and is rotatably connected to the auxiliary pressure plate 801. A secondary limiting plate 803 is fixed on both sides of the auxiliary pressure plate 801.

[0038] The test plate 4 has sliding grooves 403 on its four sides for sliding of the sub-pressure plate 801, and second extension grooves 404 at both ends of the sliding grooves 403 for sliding of the sub-limiting plate 803.

[0039] The auxiliary pressure mechanism is adjusted by sliding the slider 9 within the limiting groove 601 to ensure that the auxiliary pressure plate 801 is precisely aligned with the sliding grooves 403 on all four sides of the test plate 4. When the auxiliary pressure plate 801 is engaged with the sliding groove 403, the auxiliary limiting plate 803 slides along the second extension groove 404, forming a double constraint in both horizontal and vertical directions, effectively preventing offset during the loading process. The rotating connection design between the auxiliary pressure plate 801 and the second telescopic column 802 allows for stable engagement with the sliding groove 403 through rotation during tensile testing, improving the comprehensiveness and safety of the test.

[0040] The working principle of this utility model of a rubber expansion joint testing device with coordinated pressure regulation of main and auxiliary pumps is as follows: First, the main body 3 of the rubber expansion joint is fixed to the top of the transport vehicle 1 with bolts. Then, the test plate 4 is bolted to the pre-drilled threaded hole of the main body 3 of the rubber expansion joint. The transport vehicle 1 is pushed, and its bottom rollers 2 slide along the track 5 until the whole unit moves directly under the support platform 6.

[0041] When the main pressure mechanism is activated, the main hydraulic pump 7 drives the first telescopic column 703 to extend downwards, causing the main pressure plate 701 to press down on the middle of the test plate 4. The main limiting plate 702 prevents deviation, and the pressure is transmitted to the rubber expansion joint body 3 to complete the core area test. If decentralized testing is required, the slider 9 at the bottom of the sliding auxiliary hydraulic pump 8 is positioned within the limiting groove 601 of the support platform 6. After the bolts are fixed, the auxiliary hydraulic pump 8 drives the second telescopic column 802 to press down on the four sides of the test plate 4 with the auxiliary pressure plate 801. The auxiliary limiting plate 803 ensures accuracy. One or more auxiliary pressure mechanisms can work simultaneously.

[0042] When the main pressure mechanism is stretched, the first telescopic column 703 drives the main pressure plate 701 to embed into the limiting groove 401 of the test plate 4, and the main limiting plate 702 enters along the first extension groove 402; the main pressure plate 701 is rotated to make the main limiting plate 702 and the first extension groove 402 misalign and engage, and the main hydraulic pump 7 drives the first telescopic column 703 to lift up, which pulls the rubber expansion joint body 3 through the test plate 4.

[0043] Adjust the slider 9 so that the secondary pressure plate 801 is aligned with the sliding groove 403 of the test plate 4. The second telescopic column 802 drives the secondary pressure plate 801 to enter, and the secondary limit plate 803 passes through the second extension groove 404. Rotate the secondary pressure plate 801 to make the secondary limit plate 803 engage. The secondary hydraulic pump 8 drives the second telescopic column 802 to lift up to complete the stretching. Single or multiple sets of work can be flexibly selected.

[0044] It should be noted that, in actual implementation, the structure depicted in the accompanying drawings is not a fixed or unchanging embodiment. The components of the embodiments of this invention described and shown in these drawings can typically be arranged and designed in various different configurations. Furthermore, the accompanying drawings and abstract drawings are merely illustrative and do not represent the specific structure or actual quantity in a concrete implementation.

[0045] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention pertains. The use of terms such as "a" or "an" in this specification and claims does not necessarily indicate a limitation on quantity. Terms such as "comprising" or "including" mean that the element or component preceding the word encompasses the element or component listed following the word and its equivalents, without excluding other elements or components. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

[0046] The exemplary embodiments of the present invention have been described in detail above with reference to preferred embodiments. However, those skilled in the art will understand that various modifications and alterations can be made to the above specific embodiments without departing from the concept of the present invention, and various combinations can be made to the various technical features and structures proposed by the present invention without exceeding the protection scope of the present invention.

Claims

1. A test device for a rubber expansion joint with coordinated pressure regulation of main and auxiliary pumps, comprising a transport vehicle (1) and a support platform (6), wherein the transport vehicle (1) is slidably connected below the support platform (6), and a rubber expansion joint body (3) is fixed on the top of the transport vehicle (1), characterized in that: The top of the rubber expansion joint body (3) is bolted to a test plate (4), the middle position of the support platform (6) is connected to a main pressure mechanism, and the four sides of the support platform (6) near the main pressure mechanism are slidably connected to a secondary pressure mechanism.

2. The rubber expansion joint test device with coordinated pressure regulation of main and auxiliary pumps according to claim 1, characterized in that: The transport vehicle (1) has multiple rollers (2) symmetrically rotatably connected to its bottom. A track (5) is provided below the transport vehicle (1), and the rollers (2) are slidably connected to the track (5).

3. The rubber expansion joint test device with coordinated pressure regulation of main and auxiliary pumps according to claim 1, characterized in that: The bottom of the rubber expansion joint body (3) is bolted to the top of the transport vehicle (1), and the test plate (4) is bolted to the threaded hole reserved on the rubber expansion joint body (3).

4. The rubber expansion joint test device with coordinated pressure regulation of main and auxiliary pumps according to claim 1, characterized in that: The main pressure mechanism includes a main hydraulic pump (7), a main pressure plate (701) and a first telescopic column (703). The main hydraulic pump (7) is fixed at the middle position of the top of the support platform (6). The output end of the main hydraulic pump (7) is fixedly connected to one end of the first telescopic column (703). The other end of the first telescopic column (703) extends to the bottom of the support platform (6) and is rotatably connected to the main pressure plate (701). Main limiting plates (702) are fixed on both sides of the main pressure plate (701).

5. The rubber expansion joint test device with coordinated pressure regulation of main and auxiliary pumps according to claim 1, characterized in that: The secondary pressure mechanism includes a secondary hydraulic pump (8), a secondary pressure plate (801), and a second telescopic column (802). Each secondary hydraulic pump (8) has a slider (9) connected to its bottom. The bottom of the support platform (6) is provided with a limiting groove (601) for the slider (9) to slide. The slider (9) is fixed to the top of the support platform (6) by bolts. The second telescopic column (802) passes through the limiting groove (601) and is rotatably connected to the secondary pressure plate (801). Secondary limiting plates (803) are fixed on both sides of the secondary pressure plate (801).

6. The rubber expansion joint test device with coordinated pressure regulation of main and auxiliary pumps according to claim 4, characterized in that: The test plate (4) has a limiting groove (401) in the middle position that is compatible with the main pressure plate (701), and the limiting groove (401) has a first extension groove (402) on both sides for sliding of the main limiting plate (702).

7. The rubber expansion joint test device with coordinated pressure regulation of main and auxiliary pumps according to claim 5, characterized in that: The test plate (4) has sliding grooves (403) on its four sides for sliding of the sub-pressure plate (801), and second extension grooves (404) are provided at both ends of the sliding grooves (403) for sliding of the sub-limiting plate (803).

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