A vertically movable steel structure support for equipment

Abstract

This invention discloses a vertically movable steel structure support for equipment, comprising an upper chord plane and a lower chord plane, with an expansion and contraction adjustment space between the upper and lower chord planes. A deformation support structure is provided within this expansion and contraction adjustment space. The upper and lower chord planes and the deformation support structure form a spatial truss structure. The deformation support structure includes multiple truss units arranged in a V-shape. The upper end of each truss unit is hinged to the lower side of the upper chord plane, and the two lower ends of each truss unit are slidably mounted on the lower chord plane. This steel structure support is used to support and fix the lugs of equipment, transferring the equipment load and vertical deformation to the spring support composite beam via the web members. When the vertical equipment expands or contracts due to thermal expansion and contraction, the change in length causes a change in load, which is then transferred from the web members to the spring assembly via the slider. The spring assembly deforms and maintains the load-bearing capacity of the truss through the compression and extension of the springs.

Description

Technical Field

[0001] This invention relates to the field of mechanical devices and building structures, specifically to a vertically movable steel structure support for equipment. Background Technology

[0002] Industrial vertical equipment is often supported on a steel frame using lugs and stern beams. When the equipment operates under conditions with a significant temperature difference from the ambient temperature, its dimensions often change along its length. Taking the secondary combustion chamber of an incineration system as an example, a piece of equipment with a diameter of 4m and a height of about 20m can weigh over 300 tons, and its thermal expansion deformation under working conditions can reach 15cm.

[0003] Such equipment often employs a single-layer lug support, using pre-reserved deformation space to offset adverse effects. However, when the equipment is excessively heavy or tall, this structural arrangement is detrimental to structural load-bearing capacity and overall seismic design. Conversely, when considering a multi-layer lug arrangement, the temperature-induced deformation of the equipment cannot be ignored. If a steel frame is used to forcibly resist deformation, the internal stress of the structure becomes large and complex, making calculations unreliable. Furthermore, the load on a single lug is substantial, and the support space is limited, far exceeding the adjustment capacity of typical spring supports.

[0004] The technical problem to be solved by the present invention is to meet the requirements of specific equipment for the support structure (distributed load arrangement, and response to structural deformation) and to provide an equipment support that can be arranged in layers and has reliable support and deformation recovery capabilities. Summary of the Invention

[0005] The purpose of this invention is to solve the above-mentioned technical problems by providing a vertically movable steel structure support for equipment.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a vertically movable steel structure support for equipment, including an upper chord plane and a lower chord plane, wherein the upper chord plane and the lower chord plane form a telescopic adjustment space, and a deformation support structure is provided in the telescopic adjustment space. The deformation support structure changes the support spacing between the upper chord plane and the lower chord plane through deformation; the upper chord plane, the lower chord plane and the deformation support structure form a spatial truss structure.

[0007] The deformation support structure includes multiple truss units, which are arranged in a figure-eight shape. The upper end of the truss unit is hinged to the lower side of the upper chord plane, and the two lower ends of the truss unit are slidably arranged on the lower chord plane.

[0008] Furthermore, the upper chord plane includes an equipment support beam, and the lower chord plane includes a support rail composed of steel beams; the deformation support structure includes a web member and a spring support combination beam, each truss unit is provided with two web members, which are arranged in a V-shape, the lower end face of the equipment support beam is provided with a double hinge seat, the upper ends of the two web members are respectively hinged to the double hinge seat, the spring support combination beam is arranged in the support rail, the spring support combination beam includes a spring assembly and a slider part, the slider part is slidably connected in the support rail, and the lower end of the web member is hinged to the slider part.

[0009] Furthermore, the spring assembly includes a tension spring and a compression spring, with a tension spring provided between two sliders within a truss unit and a compression spring provided between two close sliders between two adjacent truss units.

[0010] Furthermore, the upper chord plane includes a rectangular frame formed by four equipment support beams, and the lower chord plane includes a rectangular frame formed by four support rails. Multiple truss units are evenly arranged between each corresponding equipment support beam and the rectangular frame to form a spatial truss structure surrounding the vertical equipment.

[0011] Furthermore, the slider part includes a baffle, a support plate, stiffening ribs, a pressure plate, and a pin ear plate. The support plate is provided with multiple evenly spaced components, and the support plate is arranged parallel to the length direction of the support rail. Baffles are fixed at both ends of the support plate, and the shape of the baffles matches the internal track cross-sectional shape of the support rail. Multiple stiffening ribs are horizontally distributed on the side of the support plate in the longitudinal direction, and the stiffening ribs form accommodating chambers. A pressure plate is provided on the upper edge of the support plate extending from the support rail, and a pin ear plate is fixed on the pressure plate. The lower end of the web rod is hinged to the pin ear plate.

[0012] Furthermore, the support rail is formed by two parallel and symmetrically arranged I-beams, with the opposite grooves of the two I-beams forming the support rail, and the two I-beams spaced apart to form upper rail slots. The upper side of the support plate extends from the upper rail slots to form a sliding layer between the pressure plate and the upper rail surface.

[0013] Furthermore, the sliding layer is made of polytetrafluoroethylene sheet or graphite powder, and the sliding layer is formed on the end face of the pressure plate and the upper rail surface that are close to each other.

[0014] Furthermore, the slider section is provided with multiple circulating ball structures, each of which includes a circulating track and a ball body, with the circulating track filled with several ball bodies.

[0015] A design method for a vertically movable steel structure support for equipment includes the following steps:

[0016] S1: Preliminarily determine the component cross-section, determine the load, determine the equipment lug arrangement elevation and number of layers according to the structural layout, calculate the internal forces of the truss members, and preliminarily determine the cross-section selection of each member;

[0017] S2: Deformation calculation: Calculate and determine the vertical deformation design value ΔH of the equipment, and obtain the support spring deformation design value ΔL; based on the initial and final states of the structure, calculate the internal forces of the members after deformation of the support structure, and obtain the horizontal internal force difference ΔF of the spring group. H ,

[0018]

[0019] S3: Determine the model selection based on ΔF H Based on ΔL, determine the spring stiffness coefficient k, and then select the spring type according to the structural layout. Verify the load based on the internal forces of the deformed component, adjust the node details, and finally determine the component's cross-sectional dimensions.

[0020]

[0021] Compared with the prior art, the beneficial effects of the present invention are:

[0022] 1. The steel structure support of this invention is used for supporting and fixing equipment. The equipment load and vertical deformation are transferred to the spring support composite beam through the web members. When the vertical equipment expands or contracts due to thermal expansion and contraction, the change in length causes a change in load, which is then transferred from the web members to the spring assembly via the slider. The spring assembly completes the deformation and maintains the load-bearing capacity of the truss through the compression and extension of the springs.

[0023] 2. The present invention arranges truss units around the outer periphery of the vertical equipment, and the truss units form a deformation support structure and a spatial truss structure with the upper chord plane and the lower chord plane. This not only provides vertical support for the vertical equipment, but also the spatial truss structure has good lateral stability, thus providing good support for the equipment.

[0024] 3. The steel structure support of this invention is used in conjunction with the steel structure frame foundation of the equipment. The steel structure support can be arranged in multiple layers on the steel structure frame to distribute the load on the vertical equipment and optimize the structural layout. When the equipment deforms, the load on the steel structure support at different elevations changes. The lugs of the vertical equipment drive the vertical movement of the steel structure support, while the steel structure support provides support for the vertical equipment. Attached Figure Description

[0025] Figure 1 This is an isometric view of a vertically movable steel structure support for a vertical equipment according to this application;

[0026] Figure 2 This is an exploded view of a vertically movable steel structure support for a vertically movable equipment according to this application;

[0027] Figure 3 This is a side view of a vertically movable steel structure support for equipment according to this application;

[0028] Figure 4 This is a plan view of a vertically movable steel structure support for a vertically movable equipment according to this application;

[0029] Figure 5 This is an isometric view of the slider section in this application;

[0030] Figure 6 This is a side view of the support rail and slider section;

[0031] Figure 7 A three-dimensional view of the support rail and slider section;

[0032] Figure 8 For this application Figure 6 Cross-sectional view of AA;

[0033] Figure 9 This is a simplified calculation model diagram of the steel structure support in this application;

[0034] In the diagram: 1. Steel structure support; 2. Upper chord plane; 3. Lower chord plane; 4. Telescopic adjustment space; 5. Deformation support structure; 6. Space truss structure; 7. Truss unit; 8. Equipment support beam; 9. Support rail; 10. Web member; 11. Spring support composite beam; 12. Double hinged seat; 13. Sliding block; 14. Tension spring; 15. Compression spring; 16. Baffle; 17. Support plate; 18. Stiffening rib; 19. Pressure plate; 20. Pin ear plate; 21. I-beam; 22. Upper rail groove; 23. Sliding layer; 24. Circulating ball structure; 25. Circulating track; 26. Ball body; 27. Diagonal brace; 28. Support plate; 29. ​​Circular hole; 30. Opening angle; 31. Accommodating chamber. Detailed Implementation

[0035] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0036] Example 1:

[0037] A vertically movable steel structure support for equipment, such as Figure 3 As shown, it includes an upper chord plane 2 and a lower chord plane 3, with an adjustment space 4 between the upper chord plane 2 and the lower chord plane 3. Specifically, the upper chord plane 2 includes an equipment support beam 8, and the lower chord plane 3 includes a support rail 9 composed of steel beams; as shown... Figure 2 , 4As shown, four equipment support beams 8 are provided, forming a rectangle to create the upper chord plane 2. Similarly, the lower chord plane 3 is composed of a rectangular structure formed by four support rails 9. In use, the equipment support beams 8 and support rails 9 surround the vertical equipment for support. It can be understood that in actual use, the number of equipment support beams 8 and support rails 9 can be increased or decreased according to the diameter of the vertical equipment. This embodiment takes four rails forming a rectangle as an example. Furthermore, diagonal braces 27 are provided at the corners of the rectangular frame formed by the equipment support beams 8 to form a reinforced fixation. A support layer plate 28 is provided on the upper side of the support beams, and the support layer plate 28 has a circular hole 29 in the middle for the vertical equipment to pass through. Figure 1 As shown, during installation, the vertical equipment passes through the circular hole 29, and the lugs around the vertical equipment are fixed on the support plate 28; the lower chord plane 3 is arranged on the steel structure frame foundation to form a connection and fixation between the vertical equipment and the steel structure frame; a deformation support structure 5 is set in the telescopic adjustment space 4, which utilizes the deformation capacity of the structure and maintains the support force on the vertical equipment during its deformation.

[0038] The deformation support structure 5 changes the support spacing between the upper chord plane 2 and the lower chord plane 3 by deformation; the upper chord plane 2, the lower chord plane 3 and the deformation support structure 5 form a space truss structure 6.

[0039] Specifically, such as Figure 2 , 3 As shown, the deformation support structure 5 includes multiple truss units 7, which are arranged in a figure-eight shape. Multiple truss units 7 are evenly arranged between each corresponding equipment support beam 8 and the rectangular frame to form a spatial truss structure 6 surrounding the vertical equipment.

[0040] The deformation support structure 5 includes web members 10 and spring support combined beams 11. Each truss unit 7 has two web members 10 arranged in a V-shape. In this embodiment, three sets of truss units 7 are provided between the equipment support beam 8 and the support rail 9 on each side. It is understood that those skilled in the art can increase or decrease the number of truss units 7 on each side according to the actual size of the vertical equipment. A double hinge seat 12 is provided on the lower end face of the equipment support beam 8. The double hinge seat 12 has two hinge holes. The upper ends of the two web members 10 are respectively hinged to the double hinge seat 12. The upper end of each web member 10 is hinged to one hinge hole of the double hinge seat 12. The lower ends of the two web members 10 are separated in a V-shape. The opening size of the two web members 10 is called the opening angle 30. The change of the opening angle 30 causes the longitudinal height of the double hinge seat 12 at the top to change accordingly. A slider part 13 is provided at the lower end of each web member 10.

[0041] Specifically, the spring support composite beam 11 is installed inside the support rail 9. The spring support composite beam 11 includes a spring assembly and a slider part 13. The support rail 9 is formed by two parallel and symmetrically arranged I-beams 21. Figure 7 As shown, the grooves of two opposing I-beams 21 form a support rail 9, and the two I-beams 21 are spaced apart to form upper rail slots 22. The slider part 13 is slidably connected and installed inside the support rail 9, and the lower end of the web member 10 is hinged to the slider part 13. In actual use, the lower chord plane 3 formed by the support rail 9 is fixed, while the upper chord plane 2 formed by the equipment support frame can move up and down. Therefore, when the height of the equipment support frame changes, the opening angle 30 of the web member 10 inside the truss unit 7 will be further compressed or released, thereby causing the position of the slider part 13 connected to the lower end of the web member 10 to change, so that it moves along the guide direction of the support rail 9.

[0042] Furthermore, the spring assembly includes a tension spring 14 and a compression spring 15, such as... Figure 3 As shown, a tension spring 14 is provided between two slider parts 13 within the truss unit 7, and a compression spring 15 is provided between two close slider parts 13 between two adjacent truss units 7. When the vertical equipment changes in its length direction due to thermal expansion and contraction, the pressure exerted by the vertical equipment on the upper chord plane 2 changes, thereby causing a change in the height position of the equipment support beam 8. When the equipment support beam 8 rises, the opening angle 30 formed by the web member 10 decreases, thus the tension spring 14 is compressed and the compression spring 15 is released. Conversely, when the support beam is subjected to increased pressure and descends, the opening angle 30 increases, causing the tension spring 14 to be stretched and the compression spring 15 to be compressed. Thus, the vertical equipment is maintained in a stable state under the interaction of the tension spring 14 and the compression spring 15.

[0043] Example 2:

[0044] like Figure 5As shown, the slider part 13 includes a baffle 16, a support plate 17, stiffening ribs 18, a pressure plate 19, and a pin ear plate 20. Multiple support plates 17 are evenly spaced. In this embodiment, the slider part 13 adopts a weight-reducing structure, specifically composed of baffles 16, support plates 17, stiffening ribs 18, and pressure plates 19. The support plates 17 are parallel to the length direction of the support rail 9. Multiple support plates 17 provide good support for the web rod 10 in the longitudinal direction through the pressure plates 19. Baffles 16 are fixedly provided at both ends of the support plates 17. The baffles 16 are used for fixed connection with the tension spring 14 or the compression spring 15, and the shape of the baffles 16 matches the internal track cross-sectional shape of the support rail 9, thereby allowing the entire slider part 13 to maintain stable sliding direction within the support rail 9. Multiple stiffening ribs 18 are horizontally distributed on the side of the support plate 17 in the longitudinal direction. The stiffening ribs 18 are used to increase the overall strength. It can be understood that this slider part... The design of slide block 13 avoids the use of a solid slider structure, thus significantly reducing the overall weight of slide block 13 and consequently the weight of the lower end of the web rod 10. This makes the web rod 10 easier and more responsive to rotation, resulting in faster support for vertical equipment. Furthermore, the reinforcing ribs and support plate 17 around slide block 13 effectively reduce the sliding contact area between slide block 13 and the inner wall of support rail 9, greatly reducing sliding friction. The reinforcing ribs form a cavity 31, which, during actual use, fills with lubricating oil as slide block 13 moves, further reducing friction between contact surfaces and preventing accelerated wear. A pressure plate 19 extends from the upper edge of support plate 17 onto support rail 9, and a pin lug 20 is fixed to the pressure plate 19. The lower end of the web rod 10 is hinged to the pin lug 20, allowing for a hinged connection between the web rod 10 and slide block 13.

[0045] Example 3:

[0046] like Figure 5 , 7 As shown, the upper side of the support plate 17 extends from the upper rail groove 22, so that a sliding layer 23 is provided between the pressure plate 19 and the upper rail surface. The sliding layer 23 can be made of polytetrafluoroethylene plate of a certain thickness or other materials such as graphite powder to reduce the frictional force when the slider is working.

[0047] Example 4:

[0048] like Figure 6 , 8As shown, the slider section 13 is provided with multiple circulating ball structures 24. Each circulating ball structure 24 includes a circulating track 25 and ball bodies 26. The circulating track 25 is filled with several ball bodies 26. In use, the ball bodies 26 of the circulating ball structure 24 roll in contact with the bottom surface formed inside the support rail 9, changing the original sliding contact between the bottom surface of the slider section 13 and the support rail 9 into a rolling contact. This makes the slider section 13 move more flexibly within the support rail 9. Specifically, the circulating track 25 is an open-shaped track provided inside the slider section 13, and the circulating track 25 has a long opening along its length at the bottom. The circulating track 25 is filled with ball bodies 26. When the ball bodies 26 move to the bottom of the circulating track 25, the bottom of the ball bodies 26 is exposed through the long opening, allowing the ball bodies 26 to roll in contact with the bottom wall of the support rail 9. As the slider section 13 moves, the ball bodies 26 in the circulating track 25 are driven to rotate cyclically, thereby reducing the friction during contact.

[0049] In actual work:

[0050] This steel structure support 1 consists of equipment support beams, web members 10, and spring support composite beams 11. This support is arranged on the steel frame and works in conjunction with the frame beams and columns to transfer the equipment load to the foundation. The equipment support beams, web members 10, and spring support composite beams 11 form a spatial truss structure 6. Within the upper chord of the truss, the equipment support beams are connected in pairs to form a stable planar structure for fixing the equipment lugs. This support, in conjunction with the steel frame, can be arranged at different elevations to distribute the equipment load.

[0051] The equipment lugs are fixed to the support plate 28 on the equipment support beam. The load is decomposed and transferred from the truss structure to the steel frame beams and columns, and finally to the foundation. By utilizing the characteristics of the truss structure, the load borne by individual components is reduced, and the load required for individual components to resist equipment deformation is reduced.

[0052] This invention addresses the issue of layered support arrangement by decomposing the vertical deformation caused by equipment temperature through overall truss height deformation. When multiple sets of steel structure supports 1 are arranged at different elevations, the distance between the upper and lower supports increases as the equipment vertically elongates. At this time, the overall height of the upper support truss increases, reducing the load it bears, while the overall height of the lower support truss decreases, increasing the load it bears. The opposite occurs when the equipment vertically shortens.

[0053] This invention provides deformation recovery capability through the spring extension and contraction in the combined spring support beam 11 and the connected slider part 13. The load before and after deformation can be derived from the deformation of the spring assembly, making the force transmission clear, precise, and the calculation reliable.

[0054] When the equipment undergoes vertical deformation, the load at different support positions changes. At this time, the equipment lugs drive the support beam to move up and down, and the deformation is transmitted to the spring assembly by the web rod 10 and the slider 13. The spring assembly converts the vertical deformation of the equipment into the tension and compression of the springs.

[0055] A design method for a vertically movable steel structure support 1 for equipment includes the following steps: Figure 9 As shown,

[0056] S1: Preliminarily determine the component cross-section, determine the load, determine the equipment lug arrangement elevation and number of layers according to the structural layout, calculate the internal forces of the truss members, and preliminarily determine the cross-section selection of each member;

[0057] S2: Deformation calculation, such as a simplified calculation model diagram. Figure 9 As shown, the design value ΔH of the vertical deformation of the equipment is determined based on engineering experience and theoretical calculations, and the design value ΔL of the support spring deformation is obtained. Based on the initial and final states of the structure, the internal forces of the members after deformation of the support structure are calculated, and the difference in horizontal internal forces ΔF of the spring group is obtained. H ,

[0058]

[0059] S3: Determine the model selection based on ΔF H Based on ΔL, determine the spring stiffness coefficient k, and then select the spring type according to the structural layout. Verify the load based on the internal forces of the deformed component, adjust the node details, and finally determine the component's cross-sectional dimensions.

[0060]

[0061] Where: k——spring stiffness coefficient (kN / m);

[0062] ΔF H — Difference in horizontal internal force of the spring assembly (kN);

[0063] ΔL——Design value of support spring deformation (m);

[0064] R – Length of the web member (m).

[0065] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A vertically movable steel structure support for equipment, characterized in that, It includes an upper chord plane (2) and a lower chord plane (3), and the space between the upper chord plane (2) and the lower chord plane (3) is a telescopic adjustment space (4). The telescopic adjustment space (4) is provided with a deformation support structure (5). The deformation support structure (5) changes the support spacing between the upper chord plane (2) and the lower chord plane (3) by deformation. The upper chord plane (2), the lower chord plane (3) and the deformation support structure (5) form a space truss structure (6). The deformation support structure (5) includes multiple truss units (7), which are arranged in a figure-eight shape. The upper end of the truss unit (7) is hinged to the lower side of the upper chord plane (2), and the two lower ends of the truss unit (7) are slidably arranged on the lower chord plane (3). The upper chord plane (2) includes an equipment support beam (8), and the lower chord plane (3) includes a support rail (9) composed of steel beams; the deformation support structure (5) includes web members (10) and spring support combination beam (11). Each truss unit (7) is provided with two web members (10), which are arranged in a figure-eight shape. The lower end face of the equipment support beam (8) is provided with a double hinge seat (12). The upper ends of the two web members (10) are respectively hinged to the double hinge seat (12). The spring support combination beam (11) is set in the support rail (9). The spring support combination beam (11) includes a spring group and a slider part (13). The slider part (13) is slidably connected in the support rail (9). The lower end of the web member (10) is hinged to the slider part (13). The spring assembly includes a tension spring (14) and a compression spring (15). A tension spring (14) is provided between two sliders (13) in the truss unit (7), and a compression spring (15) is provided between two sliders (13) that are close to each other between two adjacent truss units (7). The upper chord plane (2) includes a rectangular frame formed by four equipment support beams (8), and the lower chord plane (3) includes a rectangular frame formed by four support rails (9). Each corresponding equipment support beam (8) is evenly arranged with multiple truss units (7) between it and the rectangular frame, forming a spatial truss structure (6) around the vertical equipment. The slider part (13) includes a baffle (16), a support plate (17), stiffening ribs (18), a pressure plate (19), and a pin ear plate (20). The support plate (17) is provided with multiple evenly spaced components. The support plate (17) is arranged parallel to the length direction of the support rail (9). The two ends of the support plate (17) are fixedly provided with baffles (16). The shape of the baffles (16) matches the shape of the internal track cross section of the support rail (9). The side of the support plate (17) has multiple stiffening ribs (18) horizontally distributed in the longitudinal direction. The stiffening ribs (18) form a receiving chamber (31) between them. The upper edge of the support plate (17) extends out of the support rail (9) and is provided with a pressure plate (19). The pressure plate (19) is fixedly provided with a pin ear plate (20). The lower end of the web rod (10) is hinged to the pin ear plate (20).

2. The vertically movable steel structure support for equipment according to claim 1, characterized in that, The support rail (9) is formed by two parallel and symmetrical I-beams (21). The grooves of the two I-beams (21) form the support rail (9). The two I-beams (21) are spaced apart to form upper rail slots (22). The upper side of the support plate (17) extends out from the upper rail slots (22) to set a sliding layer (23) between the pressure plate (19) and the upper rail surface.

3. A vertically movable steel structure support for equipment according to claim 2, characterized in that, The sliding layer (23) is made of polytetrafluoroethylene sheet or graphite powder, and the sliding layer (23) is formed on the end face of the pressure plate (19) and the upper rail surface that are close to each other.

4. A vertically movable steel structure support for equipment according to claim 2, characterized in that, The slider part (13) is provided with multiple circulating ball structures (24), the circulating ball structure (24) includes a circulating track (25) and a ball body (26), and the circulating track (25) is filled with a number of ball bodies (26).

5. A design method for a vertically movable steel structure support for equipment, characterized in that, The vertically movable steel structure support for equipment as described in claim 1 includes the following steps: S1: Preliminarily determine the component cross-section, determine the load, determine the equipment lug arrangement elevation and number of layers according to the structural layout, calculate the internal forces of the truss members, and preliminarily determine the cross-section selection of each member; S2: Deformation calculation, calculating and determining the design value of the vertical deformation of the equipment. The design value of the support spring deformation is obtained. Based on the initial and final states of the structure, calculate the internal forces of the members after deformation of the support structure, and obtain the difference in horizontal internal forces of the spring assembly. ; ； S3: Determine the selection, based on... and Determine the spring force coefficient The selection of springs was determined based on the structural layout; the load was verified based on the internal forces of the deformed components, and the details of the joints were adjusted to finally determine the cross-sectional dimensions of the components. .

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