Adjustable member direction constraint high temperature environment loading system

Abstract

The application discloses a kind of adjustable component constraint direction high-temperature environment loading system, including spherical hinge, lower ball of spherical hinge is located in the spherical cavity of spherical hinge bottom support, lower connection support fire shield plate of spherical hinge bottom support upper portion is equipped with limiting stiffening rib baffle, spherical hinge upper cylinder is fixedly connected with spherical hinge top support, spherical hinge top support upper portion is connected with jack fire shield plate, upper portion of jack fire shield plate is connected with jack, four vertical limiting rings are arranged in the middle of jack, four vertical limiting rods are fixed in loading connection frame bottom plate and pass through the vertical limiting ring in the middle of jack, load sensor is fixed in limiting connection plate bottom;Level bubble is arranged at the upper portion of four corners of spherical hinge bottom support, circulating water cooling device is arranged in jack fire shield plate, the equipment can carry out component high-temperature, normal temperature axial test, simultaneously has the characteristics that loading range is adjustable, can more convenient control component constraint direction.

Description

Technical Field

[0001] This invention relates to the field of fire or shock-fire coupling technology, specifically to a high-temperature environment loading system with adjustable component constraint direction. Background Technology

[0002] Currently, high-temperature test furnaces are mostly used for axial compression tests of simulated components under fire or after earthquake in China.

[0003] However, the following problems arose during the experiment: (1) Loading equipment can generally only satisfy the component's stress point as a one-way hinge support or a fully rigid node support, and cannot arbitrarily control the component's constraint direction.

[0004] (2) Conventional fire test furnaces cannot be filled with loading equipment, and the components cannot be fully subjected to axial pressure through lateral limiting devices.

[0005] (3) Conventional loading equipment generally uses jacks. When the components are subjected to high temperature tests, it cannot be effectively guaranteed that the jacks will not fail due to the temperature rise during the test.

[0006] (4) Conventional loading equipment has a short range, while the components deform greatly under fire, which can easily cause the axial pressure limiting device to fall off. Summary of the Invention

[0007] The technical problem to be solved by the present invention is to address the shortcomings of the prior art by providing an adjustable component constraint direction high-temperature environment loading system, which can perform axial compression tests on components at high and normal temperatures, and has the feature of adjustable loading range, which can more conveniently control the constraint direction of the component and more easily simulate the actual component damage under fire.

[0008] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows: A high-temperature environment loading system with adjustable component constraint direction includes a loading connection frame, a jack, a fireproof cover for the jack, a top support for the ball joint, a ball joint, a limiting stiffening rib baffle, a bottom support for the ball joint, a fireproof cover for the support, and a load sensor. The load sensor is fixedly connected to the bottom of the loading connection frame. The top of the jack is flexibly connected to the load sensor, and the bottom of the jack is connected to the fireproof cover plate. The bottom of the fireproof cover plate is connected to the top of the ball joint top support. The ball joint bottom support is provided with a ball cavity. The ball joint includes an integrally formed upper cylinder and a lower ball. The upper cylinder of the ball joint is fixedly connected to the ball joint top support, and the lower ball of the ball joint is set in the ball cavity of the ball joint bottom support. A limiting stiffening rib baffle is set on the ball joint bottom support to constrain and limit the ball joint. The support fireproof cover plate is connected to the bottom of the ball joint bottom support.

[0009] As a further preferred embodiment of the present invention, the fireproof cover plate of the support is provided with a well-shaped stiffening rib inside, the thickness of the well-shaped stiffening rib of the fireproof cover plate is greater than the thickness of the outer edge plate of the fireproof cover plate, and the cavity of the fireproof cover plate is filled with fireproof fiber cotton. The connection between the top of the fireproof cover plate and the bottom support of the ball hinge is a bolt connection.

[0010] As a further preferred embodiment of the present invention, it also includes a circulating water cooling device, wherein the fireproof cover of the jack is provided with a well-shaped stiffening rib, the top plate of the fireproof cover of the jack is connected to the jack by bolts, and the circulating water cooling device is detachably and tightly connected to the outer wall of the well-shaped stiffening rib of the fireproof cover of the jack; the inner cavity of the well-shaped stiffening rib of the fireproof cover of the jack is filled with fireproof fiber cotton.

[0011] As a further preferred embodiment of the present invention, the circulating water cooling device includes four aluminum plates with grooves for circulating water channels and cooling inlet and outlet water pipes, which are connected to external cooling inlet and outlet water pipes through inlet and outlet water ports. The side of the aluminum plate facing the well-shaped stiffening ribs of the jack fireproof cover is covered with a high-temperature resistant water-proof layer.

[0012] As a further preferred embodiment of the present invention, it also includes a vertical limiting rod and a vertical limiting ring; the vertical limiting ring is evenly distributed on the jack, the vertical limiting rod is disposed at the bottom of the loading connection frame, the vertical limiting rod is evenly distributed around the load sensor, and the vertical limiting rod passes through the vertical limiting ring for limiting.

[0013] As a further preferred embodiment of the present invention, a spirit level is also included, which is embedded in the four corners of the ball joint limiting seat.

[0014] As a further preferred embodiment of the present invention, the ball joint bottom support includes a ball joint pressure bearing seat and a ball joint limiting seat; the ball joint pressure bearing seat includes a bottom circular support fireproof cover plate connecting plate, a middle cylindrical steel pressure bearing seat, and a top limiting seat connecting plate. The support fireproof cover plate connecting plate is bolted to the support fireproof cover. The steel pressure bearing seat and the limiting seat connecting plate are provided with a ball joint pressure bearing cavity at the center of the whole. The surface of the ball joint pressure bearing cavity is covered with a pressure-bearing coating with strong pressure resistance and low friction coefficient. The upper part of the limiting seat connecting plate is provided with an opening that is bolted to the ball joint limiting seat. The edge of the ball joint limiting seat fits against the edge of the limiting seat connecting plate, and its thickness is less than that of the limiting seat connecting plate. The ball joint limiting seat and the limiting stiffening rib baffle are detachably connected by bolts. The center of the ball joint limiting seat is provided with a ball joint fixing cavity with an opening that is narrow at the top and wide at the bottom to prevent the ball joint from falling off.

[0015] As a further preferred embodiment of the present invention, the vertical limiting rod includes an upper vertical limiting rod and a lower vertical limiting rod. The upper vertical limiting rod is cylindrical and has a threaded hole at its lower part. The top of the upper vertical limiting rod is welded and fixed to the bottom plate of the loading connecting frame. The lower vertical limiting rod passes through the vertical limiting ring and is connected and fixed to the upper vertical limiting rod through the threaded rod at its upper part.

[0016] As a further preferred embodiment of the present invention, the upper and lower parts of the ball joint top support are steel plates of equal thickness, and a cylindrical steel support and a cross-shaped rectangular steel support are provided between the upper and lower steel plates of the ball joint top support. The ball joint top support is bolted to the fireproof cover plate of the jack.

[0017] As a further preferred embodiment of the present invention, the loading connection frame includes, from bottom to top, a loading connection frame base plate, a cross-shaped support, and a loading connection frame thickening plate. The load sensor is fixed below the loading connection frame base plate, and the load sensor achieves real-time monitoring of the load on the component through a soft connection with the jack.

[0018] The present invention has the following beneficial effects: (1) The present invention is equipped with a detachable limiting device, which can constrain the ball joint in different directions. During the axial compression test of the component, it can meet the different constraint requirements of the component under multiple working conditions.

[0019] (2) The circulating water cooling device of the present invention uses circulating water cooling. The circulating water system cools the metal plate and places it on the outer surface of the inner ring of the well-shaped stiffening rib of the jack fireproof cover. The water cavity surrounds and covers a large area of ​​the surface of the cooling metal plate, which can effectively reduce the temperature of the metal plate and the well-shaped stiffening rib, saving water and satisfying the cooling effect.

[0020] (3) The limiting rod in this invention is connected to the vertical limiting rod connecting plate. The limiting rod constrains the jack to apply axial pressure to the component through the vertical limiting ring on the jack. At the same time, the upper and lower limiting rods are detachable. The length of the limiting rod can be adjusted according to the range of the jack. If the limiting rod undergoes large deformation after the test and does not meet the requirements of future tests, it can also be disassembled and replaced.

[0021] (4) The present invention is equipped with a level bubble, which can be used to achieve horizontal calibration of the ball joint support and ensure that the component is not eccentrically compressed. Attached Figure Description

[0022] Figure 1 This is a structural schematic diagram of an adjustable component constraint direction high-temperature environment loading system provided in an embodiment of the present invention; Figure 2 This is a schematic diagram of the structure of the fireproof cover plate for the support provided in an embodiment of the present invention; Figure 3This is a schematic diagram of the overall structure of the ball joint support provided in an embodiment of the present invention; Figure 4 This is a schematic diagram of the overall connection of the ball joint support provided in an embodiment of the present invention; Figure 5 This is a schematic diagram of the structure of the ball joint and the ball joint top support provided in an embodiment of the present invention; Figure 6 This is a cross-sectional schematic diagram of the structure of the ball joint bottom support provided in an embodiment of the present invention; Figure 7 This is a schematic diagram of the structure of the fireproof cover plate for the jack provided in an embodiment of the present invention; Figure 8 This is a schematic diagram of the structure of the circulating water cooling device provided in an embodiment of the present invention; Figure 9 This is a schematic diagram of the structure of the vertical limiting rod provided in an embodiment of the present invention; Figure 10 This is a connection diagram of an adjustable component constraint direction high-temperature environment loading system provided in an embodiment of the present invention.

[0023] Explanation of reference numerals in the attached figures: 1. Loading connecting frame; 2. Vertical limiting rod; 3. Vertical limiting ring; 4. Jack; 5. Circulating water cooling device; 6. Jack fireproof cover; 7. Top support of ball joint; 8. Ball joint; 9. Limiting stiffening rib baffle; 10. Spirit level; 11. Bottom support of ball joint; 12. Support fireproof cover; 13. Load sensor; 14. Ball joint limiting seat; 15. Ball joint pressure bearing seat. Detailed Implementation

[0024] The present invention will now be described in further detail with reference to the accompanying drawings and specific preferred embodiments.

[0025] In the description of this invention, it should be understood that the terms "left side," "right side," "upper part," "lower part," 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 invention 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. "First," "second," etc., do not indicate the importance of the components, and therefore should not be construed as a limitation of this invention. The specific dimensions used in this embodiment are only for illustrating the technical solution and do not limit the scope of protection of this invention.

[0026] like Figure 1As shown, an adjustable component constraint direction high-temperature environment loading system includes a ball joint 8. The lower sphere of the ball joint 8 is located within the spherical cavity of the ball joint bottom support 11. The lower part of the ball joint bottom support 11 is connected to a support fireproof cover plate 12. The upper part of the ball joint bottom support 11 is provided with limiting stiffening ribs 9 on all four sides. The upper cylinder of the ball joint is fixedly connected to the ball joint top support 7. The upper part of the ball joint top support 7 is connected to a jack fireproof cover plate 6. The upper part of the jack fireproof cover plate 6 is connected to a jack 4. The top of the jack 4 is connected to a load sensor fixed on the loading connection frame 1. 13. Flexible connection. The bottom of the loading connection frame 1 is also welded with four vertical limiting rods 2. The jack 4 is provided with four limiting holes for the vertical limiting rods 2 to pass through to ensure axial loading of the jack 4. The jack 4 has four vertical limiting rings 3 in the middle. The four vertical limiting rods 2 are fixed on the bottom plate of the loading connection frame 11 and pass through the round holes of the vertical limiting rings 3 in the middle of the jack 4. The ball joint bottom support 11 is provided with a spirit level 10 at the four corners of the upper part. The jack fireproof cover 6 is provided with a circulating water cooling device 5. The circulating water cooling device 5 is connected to the external water inlet and outlet.

[0027] like Figure 2 As shown, the fireproof cover plate 12 of the support is made of fire-resistant steel and has a well-shaped stiffening rib inside. The thickness of the well-shaped stiffening rib is slightly thicker than the outer edge plate of the fireproof cover plate 12. The central area of ​​the well-shaped stiffening rib is bolted to the support of the test component. The cavity of the fireproof cover plate 12 is filled with fireproof fiber cotton to ensure that the heat in the test furnace will not be transferred upward and damage the support during the high-temperature test. The top of the fireproof cover plate 12 is bolted to the bottom support 11 of the ball hinge.

[0028] like Figure 3-6 As shown, the ball joint bottom support 11 consists of a ball joint pressure bearing seat 15 and a ball joint limiting seat 14; the ball joint pressure bearing seat 15 consists of a bottom circular support fireproof cover plate connecting plate, a middle cylindrical steel pressure bearing seat, and a top limiting seat connecting plate. The support fireproof cover plate connecting plate is bolted to the support fireproof cover plate 12. The steel pressure bearing seat and the limiting seat connecting plate are integrally provided with a ball joint pressure bearing cavity at the center. The surface of the ball joint pressure bearing cavity is covered with a TiN (titanium nitride) bearing coating. The upper part of the connecting thick plate of the seat is provided with an opening for bolt connection with the ball joint limiting seat 14; the edge of the ball joint limiting seat 14 is in contact with the edge of the connecting thick plate of the limiting seat, and its thickness is slightly thinner than that of the connecting thick plate of the limiting seat; the ball joint limiting seat 14 and the limiting stiffening rib baffle 9 are detachably connected by bolts; the spirit level 10 is embedded in the four corners of the upper part of the ball joint limiting seat 14; the center of the ball joint limiting seat 14 is provided with a ball joint fixing cavity with an opening that is narrow at the top and wide at the bottom to prevent the ball joint from falling off.

[0029] The limiting stiffening baffle 9 is composed of a connecting plate, stiffening ribs and limiting plate. The connecting ball joint bearing seat 15 and the ball joint limiting seat 14 are connected by high-strength bolts. The limiting stiffening baffle is made of high-strength fire-resistant steel plate. The connecting plate, stiffening ribs and limiting plate are connected by welds. The contact surface between the limiting plate and the ball joint top support 7 is covered with a TiN (titanium nitride) bearing coating.

[0030] The ball joint 8 is composed of a lower sphere and an upper cylinder as a whole, made of high-strength fire-resistant steel. The lower sphere of the ball joint 8 is placed in the spherical cavity assembled from the various parts of the ball joint bottom support 11. The upper cylinder of the ball joint 8 is welded and fixed to the ball joint top support 7. The upper and lower parts of the ball joint top support 7 are steel plates of equal thickness. A cylindrical steel support and a cross-shaped rectangular steel support are provided between the upper and lower steel plates of the ball joint top support. The ball joint top support 7 is bolted to the jack fireproof cover plate 6.

[0031] like Figure 7-8 As shown, the fireproof cover plate 6 of the jack is made of fire-resistant steel and has well-shaped stiffening ribs inside. The top plate of the fireproof cover plate 6 is bolted to the jack 4. The circulating water cooling device 5 is detachably and tightly connected to the outer wall of the well-shaped stiffening ribs. The inner cavity of the well-shaped stiffening ribs is filled with fireproof fiber cotton. The circulating water cooling device 5 is composed of four aluminum plates with high thermal conductivity and grooves for circulating water channels. It is connected to external cooling water inlet and outlet pipes through inlet and outlet. Except for the grooves for circulating water channels, the inner wall of the aluminum plates of the well-shaped stiffening ribs is covered with a high-temperature resistant water-proof layer. The high-temperature resistant water-proof layer uses silicone resin as the main raw material to prevent circulating water from overflowing from the grooves for circulating water channels. The circulating water cooling device 5 and the fireproof fiber cotton protect the jack 4 from damage due to temperature rise.

[0032] like Figure 9 As shown, the vertical limiting rod 2 is made of high-strength fire-resistant steel. The vertical limiting rod is composed of two cylindrical vertical limiting rods, one above the other. The upper vertical limiting rod is cylindrical and has a threaded hole at the bottom. The top of the upper vertical limiting rod is welded and fixed to the bottom plate of the loading connector. The lower vertical limiting rod passes through the vertical limiting ring 3 and is connected and fixed to the upper vertical limiting rod through the threaded rod at its upper part.

[0033] The loading connection frame 1 consists of a loading connection frame base plate, a cross-shaped support, and a loading connection frame thickened plate from bottom to top. The loading connection frame is made of high-strength fire-resistant steel. The load sensor 13 is fixed below the loading connection frame base plate. The load sensor 13 monitors the load on the component in real time through a soft connection with the jack 4.

[0034] like Figure 10As shown, an adjustable component constraint direction high temperature environment loading system is assembled from bottom to top as follows: support fireproof cover plate 12, ball hinge bottom support 11, limiting stiffening rib baffle 9, spirit level 10, ball hinge 8, ball hinge top support 7, jack fireproof cover plate 6, circulating water cooling device 5, jack 4, vertical limiting ring 3, vertical limiting rod 2 and loading connection frame 1.

[0035] During the axial compression test of the component at high temperature, the test component can be bolted to the support fireproof cover plate 12 and the bottom support 11 of the ball hinge. The cavity of the support fireproof cover plate 12 is filled with fireproof fiber cotton to ensure that the heat in the test furnace will not overflow from the furnace body and thus damage the support during the test. Different working conditions of the test component support constraint can be adjusted by the number and position of the limiting stiffening rib baffles 9 installed on the upper part of the ball hinge limiting seat 14. All components including the ball hinge 8 will not move laterally. The bottom support 11 of the ball hinge and the support fireproof cover plate 12, the limiting stiffening rib baffles 9 and the level 10 connected thereto will rotate to different degrees and directions according to the specific installation of the limiting stiffening rib baffles 9. The circulating water cooling device 5 is connected to the external cooling water inlet and outlet through the water inlet and outlet to protect the jack 4 from damage due to temperature rise. The top of the loading connection frame 1 is fixedly connected to the reaction frame to ensure effective load transfer.

[0036] The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present invention, various equivalent transformations can be made to the technical solutions of the present invention, and these equivalent transformations all fall within the protection scope of the present invention.

Claims

1. A high-temperature environment loading system with adjustable component constraint direction, characterized in that: Includes a loading connection frame (1), a jack (4), a fireproof cover plate for the jack (6), a top support for the ball joint (7), a ball joint (8), a limit stiffening rib baffle (9), a bottom support for the ball joint (11), a fireproof cover plate for the support (12), and a load sensor (13). The load sensor (13) is fixedly connected to the bottom of the loading connection frame (1). The top of the jack (4) is flexibly connected to the load sensor (13). The bottom of the jack (4) is connected to the jack fireproof cover plate (6). The bottom of the jack fireproof cover plate (6) is connected to the top of the ball joint top support (7). The ball joint bottom support (11) is provided with a ball cavity. The ball joint (8) includes an integrally formed upper cylinder and a lower ball. The upper cylinder of the ball joint is fixedly connected to the ball joint top support (7). The lower ball of the ball joint (8) is set in the ball cavity of the ball joint bottom support (11). The limiting stiffening baffle (9) is set on the upper four sides of the ball joint bottom support (11) to constrain and limit the ball joint (8). The support fireproof cover plate (12) is connected to the bottom of the ball joint bottom support (11). The ball joint bottom support (11) includes a ball joint bearing seat (15) and a ball joint limiting seat (14); the ball joint bearing seat (15) includes a bottom circular support fireproof cover plate connecting plate, a middle cylindrical steel bearing seat and a top limiting seat connecting plate, the support fireproof cover plate connecting plate is bolted to the support fireproof cover plate (12), the steel bearing seat and the limiting seat connecting plate are provided with a ball joint bearing cavity at the center, the surface of the ball joint bearing cavity is covered with a material with strong compressive strength and low friction coefficient. The bearing coating is provided. The upper part of the connecting thick plate of the limiting seat is provided with an opening and bolted to the ball joint limiting seat (14). The edge of the ball joint limiting seat (14) is in contact with the edge of the connecting thick plate of the limiting seat, and the thickness is less than the thickness of the connecting thick plate of the limiting seat. The ball joint limiting seat (14) and the limiting stiffening rib baffle (9) are detachably connected by bolts. The center of the ball joint limiting seat (14) is provided with a ball joint fixing cavity with a narrow upper part and a wide lower part to prevent the ball joint (8) from falling off. When conducting the axial compression test of the component at high temperature, the test component is bolted to the support fireproof cover plate (12) and the bottom support of the ball hinge (11). The different working conditions of the support constraint of the test component are adjusted by the number and position of the limit stiffening rib baffle (9) installed on the ball hinge limit seat (14).

2. The adjustable component constraint direction high-temperature environment loading system according to claim 1, characterized in that: The fireproof cover plate (12) of the support is provided with a well-shaped stiffening rib. The thickness of the well-shaped stiffening rib of the fireproof cover plate (12) is greater than the thickness of the outer edge plate of the fireproof cover plate (12). The cavity of the fireproof cover plate (12) is filled with fireproof fiber cotton.

3. The adjustable component constraint direction high-temperature environment loading system according to claim 1, characterized in that: It also includes a circulating water cooling device (5), and the inside of the fireproof cover plate (6) of the jack is provided with a well-shaped stiffening rib. The top plate of the fireproof cover plate (6) of the jack is connected to the jack (4) by bolts. The circulating water cooling device (5) is detachably and tightly connected to the outer wall of the well-shaped stiffening rib of the fireproof cover plate (6). The inner cavity of the well-shaped stiffening rib of the fireproof cover plate (6) of the jack is filled with fireproof fiber cotton.

4. The adjustable component constraint direction high-temperature environment loading system according to claim 3, characterized in that: The circulating water cooling device (5) includes four aluminum plates with grooves for circulating water channels and cooling inlet and outlet water pipes. It is connected to the external cooling inlet and outlet water pipes through the inlet and outlet water ports. The side of the aluminum plate facing the well-shaped stiffening rib of the jack fireproof cover plate (6) is covered with a high-temperature resistant water-proof layer.

5. The adjustable component constraint direction high-temperature environment loading system according to claim 1, characterized in that: It also includes a vertical limiting rod (2) and a vertical limiting ring (3); the vertical limiting ring (3) is evenly distributed on the jack (4), the vertical limiting rod (2) is set at the bottom of the loading connection frame (1), the vertical limiting rod (2) is evenly distributed around the load sensor (13), and the vertical limiting rod (2) passes through the vertical limiting ring (3) for limiting.

6. The adjustable component constraint direction high-temperature environment loading system according to claim 1, characterized in that: It also includes a spirit level (10), which is embedded in the four corners of the ball joint limiting seat (14).

7. The adjustable component constraint direction high-temperature environment loading system according to claim 5, characterized in that: The vertical limiting rod (2) includes an upper vertical limiting rod and a lower vertical limiting rod. The upper vertical limiting rod is cylindrical and has a threaded hole at the bottom. The top of the upper vertical limiting rod is welded and fixed to the bottom plate of the loading connecting frame (1). The lower vertical limiting rod passes through the vertical limiting ring (3) and is connected and fixed to the upper vertical limiting rod through the threaded rod provided at the top of the lower vertical limiting rod.

8. The adjustable component constraint direction high-temperature environment loading system according to claim 1, characterized in that: The upper and lower parts of the ball hinge top support (7) are steel plates of equal thickness. A cylindrical steel support and a cross-shaped rectangular steel support are provided between the upper and lower steel plates of the ball hinge top support (7). The ball hinge top support (7) is bolted to the jack fireproof cover plate (6).

9. The adjustable component constraint direction high-temperature environment loading system according to claim 1, characterized in that: The loading connection frame (1) includes a loading connection frame base plate, a cross-shaped support and a loading connection frame thickening plate from bottom to top. The load sensor (13) is fixed below the loading connection frame base plate. The load sensor (13) monitors the load on the component in real time through a soft connection with the jack (4).

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