A test device for tangential shear strength of heating pipe

Abstract

The utility model relates to the technical field of heat supply pipeline shearing test, especially a kind of test device for heat supply pipeline tangential shearing strength, including press body, the middle part of press body is equipped with mould base.The utility model has the advantages that: by setting mould base, its top surface is equipped with two support plates, support plate top end is provided with mould mounting hole, pressing block mounting seat is installed in the output end of hydraulic cylinder, the bottom end of pressing block mounting seat is equipped with pressing block, when using, test block is respectively penetrated two mould mounting seats and shear block, two mould mounting seats are placed in the inside of mould mounting hole, by the elongation action of hydraulic cylinder, pressing block is pushed and cooperates with shear block, with the continuous elongation of hydraulic cylinder, it is convenient to carry out shearing test to test block, two mould mounting seats and shear block adopt movable mounting design, operation is more convenient, it is convenient for operator to operate and use, and effectively solve the problems existing in prior art.

Description

Technical Field

[0001] This utility model relates to the field of shear testing technology for heating pipelines, and in particular to a testing device for the tangential shear strength of heating pipelines. Background Technology

[0002] Heating pipelines (also known as "thermal pipelines") are specialized piping systems used to transport hot water, steam, or other high-temperature media to provide heating, domestic hot water, or process heat energy for buildings or industrial facilities. They are a core component of urban district heating, regional heating, and industrial heat energy transmission. Shear tests directly assess the load-bearing capacity of pipe materials, welds, or connections (such as flanges and compensators) under lateral shear forces, preventing pipe rupture or joint detachment due to shear failure. Shear tests can also expose weak points in advance, avoiding leaks or pipe bursts during operation.

[0003] When conducting shear strength tests on heating pipelines, the test block needs to be placed inside the shearing mold. Due to the different sizes of the test blocks, the mold needs to be replaced during the shear test for different test blocks to meet the requirements of the shear test. Traditional shearing molds generally adopt an integrated structure, which makes mold replacement inconvenient and interferes with the shear test. Based on this, a testing device for the tangential shear strength of heating pipelines is proposed to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a testing device for the tangential shear strength of heating pipelines, which effectively solves the deficiencies of the prior art.

[0005] To achieve the above objectives, one embodiment of the present invention provides a testing device for the tangential shear strength of a heating pipeline, comprising a press body, a mold base installed in the middle of the press body, two support plates installed in the middle of the top surface of the mold base, and mold mounting holes opened at the top of both support plates, mold mounting seats provided inside the two mold mounting holes, and a hollow shear block provided between the two mold mounting seats. A vertically placed hydraulic cylinder is installed at the top of the press body. A pressure block mounting seat is installed at the output end of the hydraulic cylinder. A limit groove is opened on one side of the pressure block mounting seat, and a pressure block for pushing the shearing block is slidably installed inside it.

[0006] Preferably, in any of the above embodiments, two limiting holes are provided at the platform position in the middle of the press body, and two limiting posts that cooperate with the limiting holes are installed on the bottom surface of the mold base. Operating handles are installed in the middle of both sides of the mold base. In this embodiment, the operating handles provide a gripping position for the operator, thereby facilitating the operator to move the mold base. The limiting posts help to limit the installation of the mold base, improve the accuracy of placement, and facilitate the alignment of the shearing block and the pressing block, which is convenient for subsequent shearing test operations.

[0007] Preferably, in any of the above embodiments, a limiting groove is formed at the edge of the top surface of the mold base. Two opposing transparent protective covers are installed inside the limiting groove. Each of the two transparent protective covers has an operating hole on its far side. This design facilitates the blocking of the shearing process of the test block. At the same time, the transparent protective covers are made of transparent material, which allows the operator to observe the entire test process directly. In addition, the four corners of the limiting groove penetrate downwards through the mold base, and the two corners of the two transparent protective covers are provided with protrusions, so that the two transparent protective covers are stably placed inside the limiting groove. The operating holes provide a gripping position for the operator, which facilitates the lifting or placing of the transparent covers.

[0008] Preferably, in any of the above-mentioned schemes, limiting protrusions are installed at the edges of the opposite end faces of the two mold mounting seats. The internal dimensions of the two mold mounting seats and the shearing block correspond to each other. In this scheme, the limiting protrusions facilitate the stepped shape of the ends of the mold mounting seats, thereby limiting the installation of the mold mounting seats and making the two mold mounting seats as close as possible to the shearing block. This facilitates the shearing test on the test block. Referring to the attached drawings, the external dimensions of the mold mounting seats and the shearing block are the same, and the internal dimensions are set in various specifications according to the selected dimensions of the test block. This facilitates the selection of appropriate mold mounting seats and shearing blocks according to the external dimensions of the test block, ensuring the smooth conduct of the shearing test.

[0009] Preferably, the top of the pressure block mounting base is cylindrical, and a limiting groove is provided in the middle of its outer circular surface. This design facilitates direct connection between the top of the pressure block mounting base and the output end of the hydraulic cylinder, and the position of the pressure block mounting base is locked and fixed by bolts.

[0010] Preferably, the bottom of the pressure block is U-shaped, and its dimensions are adapted to the outer wall dimensions of the shear block. This design facilitates precise docking between the pressure block and the shear block, ensuring stable transmission of hydraulic cylinder pressure to the test block and enabling shearing tests on the test block.

[0011] This utility model has the following advantages: 1. This device for testing the tangential shear strength of heating pipelines comprises a mold base with two support plates mounted on its top surface. The support plates have mold mounting holes at their top ends. A pressure block mounting seat is installed at the output end of a hydraulic cylinder, and a pressure block is mounted at the bottom end of the pressure block mounting seat. During use, the test block passes through both mold mounting seats and the shear block. The two mold mounting seats are placed inside the mold mounting holes. The hydraulic cylinder extends, pushing the pressure block to engage with the shear block. As the hydraulic cylinder continues to extend, it facilitates shear testing of the test block. The two mold mounting seats and the shear block are designed for movable installation, making operation more convenient and easier for operators. This device effectively solves the problems existing in the prior art.

[0012] 2. This testing device for the tangential shear strength of heating pipelines includes a pressure block mounting base and a pressure block. The side of the pressure block mounting base has a limit groove, which facilitates the installation position of the pressure block and makes it easy to disassemble the pressure block. When wear occurs, it is easy to disassemble and replace it quickly. Two operating handles are provided to facilitate the operator to move the mold base. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the press body structure of this utility model; Figure 3 This is a schematic diagram of the assembly structure of the mold base and the transparent protective cover of this utility model; Figure 4 This is a cross-sectional structural diagram of the mold base and transparent protective cover of this utility model; Figure 5 This is a schematic diagram of the mold base structure of this utility model; Figure 6 This is an exploded structural diagram of the pressure block mounting base and the pressure block of this utility model; Figure 7 This is a schematic diagram of the transparent protective cover structure of this utility model; Figure 8 This is a comparative schematic diagram of mold mounting bases and shearing blocks of different sizes according to this utility model.

[0014] In the diagram: 1-press body, 2-mold base, 3-transparent protective cover, 4-hydraulic cylinder, 5-pressing block mounting seat, 6-limiting hole, 7-operating handle, 8-limiting post, 9-pressing block, 10-shearing block, 11-support plate, 12-mold mounting seat, 13-mold mounting hole, 14-limiting protrusion, 15-limiting groove, 16-operating hole. Detailed Implementation

[0015] The present invention will be further described below with reference to the accompanying drawings, but the scope of protection of the present invention is not limited to the following description.

[0016] like Figures 1 to 8 As shown, a testing device for the tangential shear strength of a heating pipeline includes a press body 1, a mold base 2 installed in the middle of the press body 1, two support plates 11 installed in the middle of the top surface of the mold base 2, and mold mounting holes 13 are opened at the top of both of them. Mold mounting seats 12 are provided inside the two mold mounting holes 13, and a hollow shear block 10 is provided between the two mold mounting seats 12. A vertically placed hydraulic cylinder 4 is installed at the top of the press body 1. A pressure block mounting seat 5 is installed at the output end of the hydraulic cylinder 4. A limit groove is opened on one side of the pressure block mounting seat 5, and a pressure block 9 for pushing the shearing block 10 is slidably installed inside it.

[0017] A pressure sensor is installed at the edge of the output end of hydraulic cylinder 4. It is electrically connected to an external amplification and processing circuit via wires. After amplification, filtering, and noise reduction of the electrical signal, the signal is transmitted to the PLC for calculation and processing to obtain the pressure value, which is then displayed on the screen on the press body 1. Alternatively, the PLC can be electrically connected to an external computer via a data cable. By running the corresponding testing machine software on the computer, the data is visualized and generated into graphs to meet the needs of real-time monitoring.

[0018] Two limiting holes 6 are provided at the platform position in the middle of the press body 1. Two limiting posts 8 that cooperate with the limiting holes 6 are installed on the bottom surface of the mold base 2. Operating handles 7 are installed in the middle of both sides of the mold base 2. As an optional technical solution of this utility model, the operating handles 7 provide a gripping position for the operator, thereby facilitating the operator to move the mold base 2. The limiting posts 8 facilitate the installation of the mold base 2, improve the accuracy of placement, and facilitate the alignment of the shearing block 10 and the pressing block 10, which is convenient for subsequent shearing test operations.

[0019] A limiting groove 15 is provided at the edge of the top surface of the mold base 2. Two opposing transparent protective covers 3 are installed inside the limiting groove 15. The two transparent protective covers 3 have operating holes 16 on their opposite sides. As an optional technical solution of this utility model, this facilitates the blocking of the shearing process of the test block. At the same time, the transparent protective covers 3 are made of transparent material, which makes it easy for the operator to observe the entire test process directly. The four corners of the limiting groove 15 all penetrate downward through the mold base 2. The two corners of the two transparent protective covers 3 are provided with protrusions, so that the two transparent protective covers 3 are stably placed inside the limiting groove 15. The operating holes 16 provide a gripping position for the operator, which makes it easy to lift or place the transparent covers 3.

[0020] Limiting protrusions 14 are installed at the far ends of the two mold mounting seats 12. The internal dimensions of the two mold mounting seats 12 and the shearing block 10 correspond. As an optional technical solution of this utility model, the limiting protrusions 14 facilitate the stepped shape of the ends of the mold mounting seats 12, thereby limiting the installation of the mold mounting seats 12 and making the two mold mounting seats 12 as close as possible to the shearing block 10, which is convenient for shearing tests on the test block. See attached figure. Figure 8 As shown, the mold mounting base 12 and the shearing block 10 have the same external dimensions, and the internal dimensions are set in various specifications according to the selected size of the test block. This makes it easier to select the appropriate mold mounting base 12 and shearing block 10 according to the external dimensions of the test block, thus ensuring the smooth conduct of the shearing test.

[0021] The top of the pressure block mounting base 5 is cylindrical, and a limiting groove is provided in the middle of its outer circular surface. As an optional technical solution of this utility model, this makes it easy to directly connect the top of the pressure block mounting base 5 with the output end of the hydraulic cylinder 4, and lock and fix the position of the pressure block mounting base 5 with bolts.

[0022] The bottom of the pressure block 9 is inverted U-shaped, and its size is adapted to the size of the outer wall of the shear block 10. As an optional technical solution of this utility model, this makes it easy to make the pressure block 9 and the shear block 10 accurately dock, so that the pressure of the hydraulic cylinder 4 can be stably transmitted to the test block, which is convenient for shearing test on the test block.

[0023] This testing device for the tangential shear strength of heating pipelines requires the following steps when in use: 1) In use, the pressure block mounting base 5 is installed at the output end of the hydraulic cylinder 4, and the pressure block 9 is installed inside the pressure block mounting base 5; 2) Place the mold base 2 on the middle platform of the press body 1, and pass the test block through the mold mounting base 12 and the shearing block 10 respectively. At the same time, the mold mounting base 12 is installed inside the mold mounting hole 13. 3) The hydraulic cylinder 4 extends, pushing the pressure block 9 to a lower height and engaging with the outer wall of the shear block 10. As the hydraulic cylinder 4 continues to extend and pressurize, the shear strength test is performed on the test block.

[0024] In summary, when using the device, the user sets up a mold base 2 with two support plates 11 mounted on its top surface. The top of each support plate 11 has a mold mounting hole 13. A pressure block mounting seat 5 is installed at the output end of the hydraulic cylinder 4, and a pressure block 9 is mounted at the bottom of the pressure block mounting seat 5. During use, the test block is passed through both mold mounting seats 12 and the shearing block 10. The two mold mounting seats 12 are placed inside the mold mounting holes 13. The extension of the hydraulic cylinder 4 pushes the pressure block 9 to engage with the shearing block 10. As the hydraulic cylinder 4 continues to extend, it facilitates the shearing of the test block. In the cutting test, the two mold mounting seats 12 and the shearing block 10 adopt a movable installation design, which makes the operation more convenient and easy for operators to use. It also effectively solves the problems existing in the prior art. Furthermore, by setting up the pressure block mounting seat 5 and the pressure block 9, the side of the pressure block mounting seat 5 is provided with a limit groove, which facilitates the installation position of the pressure block 9 and makes it easy to disassemble the pressure block 9. When it is worn, it is easy to disassemble and replace it quickly. By setting up two operating handles 7, it is easy for operators to move the position of the mold base 2 through the operating handles 7.

[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A testing device for the tangential shear strength of a heating pipeline, characterized in that: The press body (1) is included. A mold base (2) is installed in the middle of the press body (1). Two support plates (11) are installed in the middle of the top surface of the mold base (2). Both support plates have mold mounting holes (13) at their top ends. Mold mounting seats (12) are provided inside the two mold mounting holes (13). A hollow shearing block (10) is provided between the two mold mounting seats (12). The top of the press body (1) is equipped with a vertically placed hydraulic cylinder (4), and the output end of the hydraulic cylinder (4) is equipped with a pressure block mounting seat (5). A limit groove is opened on one side of the pressure block mounting seat (5), and a pressure block (9) for pushing the shearing block (10) is slidably installed inside it.

2. The testing device for tangential shear strength of a heating pipeline according to claim 1, characterized in that: Two limiting holes (6) are opened at the platform position in the middle of the press body (1). Two limiting posts (8) that cooperate with the limiting holes (6) are installed on the bottom surface of the mold base (2). Operating handles (7) are installed in the middle of both sides of the mold base (2).

3. The testing device for the tangential shear strength of a heating pipeline according to claim 2, characterized in that: A limiting groove (15) is provided at the edge of the top surface of the mold base (2). Two opposing transparent protective covers (3) are installed inside the limiting groove (15). The two transparent protective covers (3) have operating holes (16) on their opposite sides.

4. The testing device for tangential shear strength of a heating pipeline according to claim 3, characterized in that: Limiting protrusions (14) are installed at the far ends of the two mold mounting seats (12), and the internal dimensions of the two mold mounting seats (12) and the shearing block (10) correspond to each other.

5. The testing device for tangential shear strength of a heating pipeline according to claim 4, characterized in that: The top of the pressure block mounting base (5) is cylindrical, and a limiting groove is provided in the middle of its outer circular surface.

6. The testing device for tangential shear strength of a heating pipeline according to claim 5, characterized in that: The bottom of the pressure block (9) is U-shaped, and its size is compatible with the outer wall size of the shear block (10).

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