A multi-directional absorption expansion volume device support structure

Abstract

The utility model discloses a kind of equipment support structures of multidirectional absorption expansion quantity, including base, lower slide and upper slide, the base is fixedly connected with the installation foundation of equipment, upper slide is fixedly connected with equipment, lower slide is arranged between base and upper slide, base and lower slide have the rotation freedom degree that the connecting angle change caused by expansion quantity is matched;Between lower slide and upper slide have the movement freedom degree that the connecting position change caused by expansion quantity is matched, the utility model creatively combines two degrees of freedom of spherical surface rotation and plane sliding.Spherical surface structure can effectively compensate the angular deflection and axial bending of equipment at installation foundation;Plane sliding structure can absorb linear thermal expansion displacement of equipment in any direction in horizontal plane;This composite design realizes three-dimensional multidirectional displacement absorption in true sense, provides stable support for equipment.

Description

Technical Field

[0001] This utility model relates to the field of equipment installation technology, specifically to a multi-directional equipment support structure that absorbs expansion. Background Technology

[0002] Large-sized equipment or steel structures, especially under temperature variations, experience significant and difficult-to-calculate expansion. Components must repeatedly withstand substantial deformation, making them highly susceptible to fatigue, deformation, and sealing failure. Materials must possess sufficient elastic deformation capacity to achieve large compensation amounts; existing metals or composite materials struggle to balance these multiple performance requirements.

[0003] Individual plate supports have low load-bearing capacity, can only rotate and shear displacement with a small range, and have poor flexibility.

[0004] Individual spherical bearings have high precision requirements, high manufacturing costs, and very high installation and maintenance requirements. They are also relatively large and require a certain amount of installation space. Utility Model Content

[0005] Technical objective: To address the shortcomings of existing equipment installation structures, this utility model discloses a multi-directional equipment support structure that absorbs expansion.

[0006] Technical solution: To achieve the above technical objectives, the present invention adopts the following technical solution: A multi-directional expansion-absorbing device support structure includes a base, a lower slide plate, and an upper slide plate. The base is fixedly connected to the device's mounting foundation, the upper slide plate is fixedly connected to the device, and the lower slide plate is disposed between the base and the upper slide plate. The base and the lower slide plate have rotational degrees of freedom that match the changes in the connection angle caused by the expansion. A first limiting mechanism is provided on the surface of the lower slide plate around the upper end of the base to limit the relative position of the base and the lower slide plate. The lower slide plate and the upper slide plate have a degree of movement freedom that matches the changes in the connection position caused by the expansion.

[0007] Preferably, the upper part of the base of this utility model is a columnar structure, and the upper end surface of the columnar structure is a spherical surface. The spherical surface is used to compensate for the circumferential position between the equipment and the base and for axial bending compensation perpendicular to the circumferential direction. The axial direction is the radial direction of the spherical surface.

[0008] Preferably, the first limiting mechanism of this utility model includes an annular limiting block disposed around the upper end of the base, which restricts the upper part of the base within the area of ​​the annular limiting block.

[0009] Preferably, the present invention provides a slider between the surfaces of the lower and upper sliding plates, and provides a second limiting mechanism around the slider's sliding direction to limit the relative movement range of the slider and the lower and upper sliding plates.

[0010] Preferably, the second limiting mechanism of this utility model includes four second limiting blocks disposed in four directions around the slider. Two second limiting blocks symmetrically disposed about the slider are divided into a group, and the two groups of second limiting blocks are disposed on the surfaces of the lower sliding plate and the upper sliding plate, respectively.

[0011] Preferably, the surface of the slider that mates with the upper and lower sliding plates of this invention is made of stainless steel, and the sliding contact surface is formed by the stainless steel surface.

[0012] Preferably, the present invention involves coating the stainless steel veneer surface with a Teflon layer.

[0013] Beneficial effects: The multi-directional expansion absorption equipment support structure disclosed in this utility model has the following beneficial effects: 1. This utility model creatively combines two degrees of freedom: spherical rotation and planar sliding. The spherical structure (between the base and the lower sliding plate) can effectively compensate for the angular deflection and axial bending of the equipment at the mounting foundation; the planar sliding structure (between the lower sliding plate and the upper sliding plate) can absorb the linear thermal expansion displacement of the equipment in any direction in the horizontal plane; this composite design achieves true three-dimensional multi-directional displacement absorption.

[0014] 2. This utility model, by setting up a first limiting mechanism and a second limiting mechanism, limits the range of motion of the base, lower slide plate, and slider while allowing necessary displacement. This prevents structural dislocation or instability caused by excessive displacement, ensuring the support rigidity and safety of the equipment under normal operating conditions.

[0015] 3. This invention employs a combination of stainless steel cladding and Teflon layer on the sliding contact surface, significantly reducing the coefficient of friction between sliding components. This allows the equipment to move smoothly during expansion and contraction, avoiding jamming, while also reducing wear, extending the service life of the support structure, and minimizing maintenance requirements.

[0016] 4. The support structure of this utility model is integrated into several main components such as the base, lower slide plate, and upper slide plate, resulting in a compact structure that does not occupy excessive space. It can be widely used in the support of large equipment (such as steam turbines, pumps, compressors, etc.) in industries such as power, petrochemicals, and metallurgy. Especially in situations where there are strict requirements for thermal displacement compensation, the internal compensation mechanism is achieved through a precision mechanical structure, requiring no external power or complex control. It passively responds to the displacement of the equipment, ensuring reliable operation. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0018] Figure 1 This is a main sectional view of the support structure of this utility model; Figure 2 This utility model is based on Figure 1 Sectional view of AA; Among them, 1-base, 2-lower slide plate, 3-upper slide plate, 4-ring limit block, 5-slider, 6-second limit block, 7-stainless steel veneer. Detailed Implementation

[0019] Reference will now be made in detail to embodiments of the present disclosure, one or more of which are set forth herein. Each embodiment and example is provided by way of explanation of the apparatus, composition, and materials of the present disclosure, and not by way of limitation. Rather, the following description provides convenient illustrations for implementing exemplary embodiments of the present disclosure. Indeed, it will be apparent to those skilled in the art that various modifications and variations can be made to the teachings of the present disclosure without departing from the scope or spirit of the present disclosure.

[0020] like Figure 1 and Figure 2 As shown in the figure, this embodiment provides a multi-directional expansion absorption equipment support structure, mainly including a base 1, a lower sliding plate 2, and an upper sliding plate 3. The base 1 is fixedly connected to the equipment's mounting foundation (such as a concrete foundation) by anchor bolts. The upper sliding plate 3 is fixedly connected to the base of the equipment to be supported (such as a steam turbine, pump set, etc.) by bolts. The lower sliding plate 2 is located between the base 1 and the upper sliding plate 3 and is the core component for transmitting loads and realizing freedom of movement.

[0021] To compensate for changes in connection positions caused by expansion due to temperature differences and to ensure stable support for the equipment, the upper part of the base 1 is designed as a columnar structure, with the top of the columnar structure machined into a spherical surface. Correspondingly, the bottom center of the lower sliding plate 2 is machined with a ball socket (not shown in the figure) that matches the spherical surface, so that the lower sliding plate 2 can be fastened to the ball head of the base 1 to form a spherical revolute joint, wherein the radius of curvature of the ball socket of the lower sliding plate 2 is larger than that of the spherical surface to accommodate axial bending caused by expansion.

[0022] The spherical rotating joint allows the lower slide plate 2 to deflect at a certain angle relative to the base 1 in any direction, thereby compensating for bending perpendicular to the axial direction and torsional deformation that may occur during operation of the equipment.

[0023] To ensure that the rotating joint operates within a safe range, a first limiting mechanism 4 is fixedly installed around the upper end of the base 1. In this embodiment, the first limiting mechanism 4 is a set of annular limiting blocks that together form an area, restricting the ball head portion of the base 1 within this area, preventing excessive horizontal displacement of the sliding plate 2 or its detachment from the base 1, thereby improving the safety of the structure.

[0024] To compensate for linear displacement caused by thermal expansion of the equipment, a slider 5 is provided between the surfaces of the lower slide plate 2 and the upper slide plate 3. The slider 5 forms sliding contact with the upper surface of the lower slide plate 2 and the lower surface of the upper slide plate 3.

[0025] To reduce sliding friction resistance and improve the sensitivity and durability of movement, stainless steel facing 7 is fixed to the surfaces of the slider 5 that mate with the upper sliding plate 3 and the lower sliding plate 2 by welding or inlaying. This prevents the steel from rusting and increasing friction resistance. Simultaneously, a Teflon layer (polytetrafluoroethylene) is added to the contact surface. Utilizing its extremely low coefficient of friction and self-lubricating properties, a highly efficient low-friction sliding interface is formed. Teflon has a coefficient of friction of only 0.02-0.04, one of the lowest among known solid materials, which significantly reduces component wear. Furthermore, Teflon has strong corrosion resistance, greatly increasing the service life of the device.

[0026] To control the movement range of the slider 5 and prevent it from slipping, a second limiting mechanism is provided around the slider 5 in the sliding direction. In this embodiment, the second limiting mechanism includes four second limiting blocks 6. Specifically, two second limiting blocks 6 are arranged symmetrically about the slider 5 as a group. One group (e.g., restricting movement in the horizontal X direction) is fixedly installed on the surface of the lower sliding plate 2, and the other group (e.g., restricting movement in the horizontal Y direction) is fixedly installed on the surface of the upper sliding plate 3. The two groups of limiting blocks together form a closed movement range frame, allowing the slider 5 to move bidirectionally within it to absorb any horizontal expansion while ensuring that it does not exceed the designed stroke. Furthermore, the two groups of second limiting blocks 6 are arranged separately to facilitate structural assembly.

[0027] The work process is as follows: During the startup and heating process of equipment (such as a steam turbine), the equipment body will shift due to thermal expansion: The linear expansion force of the equipment in the horizontal plane (X and Y directions) is transmitted to the slider 5 through the upper slide plate 3. The upper slide plate 3, slider 5, and lower slide plate 2 slide relative to each other along the sliding surface to adjust their support positions. This process absorbs the linear thermal expansion of the equipment.

[0028] Meanwhile, the equipment may experience minor bending or torsional stresses due to uneven thermal expansion. This torque is transmitted to the spherical joint of the base 1 through the support structure, causing the lower slide plate 2 to rotate slightly relative to the spherical surface of the base 1. This process compensates for the angular changes between the equipment and the foundation, avoiding stress concentration.

[0029] When the equipment stops to cool and shrink, the entire support structure, under the action of the reverse force, will cause both slider 5 and the spherical pair to return to their initial positions or new equilibrium positions.

[0030] In summary, this utility model, through a composite design combining "spherical rotation" and "planar sliding," successfully achieves effective absorption and compensation of the multi-directional expansion of the equipment, ensuring its long-term, safe, and stable operation. The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model.

Claims

1. A multi-directional absorption of expansion amount of equipment support structure, characterized in that, The device includes a base (1), a lower slide plate (2), and an upper slide plate (3). The base (1) is fixedly connected to the installation base of the device, the upper slide plate (3) is fixedly connected to the device, and the lower slide plate (2) is disposed between the base (1) and the upper slide plate (3). The base (1) and the lower slide plate (2) have rotational degrees of freedom that match the changes in the connection angle caused by the expansion amount. The lower slide plate (2) has a first limiting mechanism on the upper end of the base around the perimeter to limit the relative position of the base (1) and the lower slide plate (2). The lower slide plate (2) and the upper slide plate (3) have a movement degree of freedom that matches the changes in the connection position caused by the expansion amount.

2. A multi-directional absorbent expansion volume device support structure according to claim 1, wherein, The upper part of the base (1) is a columnar structure, and the upper end surface of the columnar structure is a spherical surface. The spherical surface is used to compensate for the circumferential position between the equipment and the base and for axial bending compensation perpendicular to the circumferential direction. The axial direction is the radial direction of the spherical surface.

3. A multi-directional absorbent expansion volume device support structure according to claim 1, wherein, The first limiting mechanism includes an annular limiting block (4) disposed around the upper end of the base (1) to restrict the upper part of the base (1) within the area of ​​the annular limiting block (4).

4. A multi-directional absorbent expansion volume device support structure according to claim 1, wherein, A slider (5) is provided between the surfaces of the lower slide plate (2) and the upper slide plate (3). A second limiting mechanism is provided around the slider (5) in the sliding direction to limit the relative movement range of the slider (5) with the lower slide plate (2) and the upper slide plate (3).

5. The equipment support structure for multi-directional absorption of expansion according to claim 4, characterized in that, The second limiting mechanism includes four second limiting blocks (6) disposed in four directions around the slider. Two second limiting blocks (6) symmetrically disposed about the slider (5) are divided into a group, and the two groups of second limiting blocks (6) are disposed on the surfaces of the lower sliding plate (2) and the upper sliding plate (3).

6. A multi-directional absorbent expansion volume device support structure according to claim 4, wherein, The surface of the slider (5) that mates with the upper slide plate (3) and the lower slide plate (2) is a stainless steel veneer (7), which forms a sliding contact surface.

7. A multi-directional absorbent expansion volume device support structure according to claim 6, wherein, A Teflon layer is coated onto the stainless steel veneer surface.

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