Multi-direction adjustable slidable supporting structure and supporting method

Abstract

The invention discloses a multi-direction adjustable slidable supporting structure and a supporting method. The multi-direction adjustable slidable supporting structure comprises an upper hoop connecting part, a middle sliding limiting part and a lower supporting column part which are sequentially connected from top to bottom. The middle sliding limiting part comprises a fixing plate, a fixing plate support, a sliding block, a stainless steel flat plate and a limiting block; a limiting space is defined by the multiple limiting blocks, the fixing plate is contained in the limiting space, and the fixing plate slides in the limiting space in a self-adaptive mode in the horizontal direction; the lower supporting column part comprises a support, a full-thread double-thread screw and a supporting flat plate, and the height of the whole structure is adjusted and fixed by adjusting a nut on the full-thread double-thread screw. Influences of environment, foundation settlement and installation errors on the combined electric appliance can be weakened, product quality is improved, hidden danger of air leakage can be effectively reduced, and the requirement for long-time safe and reliable operation of the combined electric appliance is met.

Description

Technical Field

[0001] This invention relates to the field of electrical equipment technology, and in particular to a multi-directional adjustable sliding support structure and support method. Background Technology

[0002] Gas-insulated metal-enclosed switchgear (GIS) is a type of high-voltage electrical appliance that integrates and seals various high-voltage electrical components, such as circuit breakers, disconnectors, grounding switches, busbars, and instrument transformers, within a grounded metal casing and pressurizes it. Complete sets of switchgear composed of gas as the insulating medium have advantages such as large transmission capacity, small footprint, simple maintenance and long service life. Each assembled combination of electrical appliances is called a bay.

[0003] In traditional GIS equipment installation, rigid connections between busbar bays and between busbar supports and mounting brackets are typically achieved using bolts. If the GIS bay spacing is long, the busbars will experience significant thermal expansion and contraction due to external temperature changes. This immense stress can cause the busbars to deform under pressure, affecting the reliable operation of the equipment and potentially leading to malfunctions. Therefore, supports are needed between the busbar bays. The original supports could only be adjusted vertically during installation using double-ended threaded rods, adjusting the height according to the design. Once fixed, they cannot be adjusted automatically, failing to adapt to changes in direction due to thermal expansion and contraction or foundation settlement. Over time, this can negatively impact the busbar shell, creating a potential for air leakage.

[0004] In summary, the shortcomings of the existing technology are as follows: the existing adjustment function is limited to the initial height calibration during the installation phase. Once the installation is completed and the nuts are tightened, the support structure forms a rigid connection. During the subsequent long-term operation of the equipment, when the busbar drum experiences deformation stress due to factors such as thermal expansion and contraction, uneven foundation settlement, and equipment vibration, the existing rigid support cannot adaptively deform or slide accordingly, thus losing its compensation capability. The long-term accumulated deformation stress can easily cause the busbar drum to be squeezed and deformed, posing a potential risk of air leakage. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a multi-directional adjustable sliding support structure and support method. This invention can reduce the impact of the environment, foundation settlement, and installation errors on the combined electrical appliances, improve product quality, effectively reduce the risk of gas leakage, and meet the requirements for long-term safe and reliable operation of the combined electrical appliances.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: In a first aspect, the present invention provides a multi-directional adjustable sliding support structure, comprising: The components connected from top to bottom are the upper clamp connection part, the middle sliding limit part, and the lower support part; The upper clamp connection part is used to wrap around and connect the GIS busbar cylinder; The middle sliding limiting part includes a fixed plate, a fixed plate support fixed to the upper part of the fixed plate, a slider installed at the bottom of the fixed plate, a stainless steel plate in contact with the slider, and a limiting block set on the stainless steel plate; multiple limiting blocks enclose a limiting space, the fixed plate is accommodated in the limiting space, the fixed plate slides adaptively in the horizontal direction in the limiting space, and the limiting block is used to limit and block the fixed plate when the sliding exceeds the predetermined range. The lower support structure includes a support, a double-ended threaded screw, and a support plate. The height of the entire structure can be adjusted and fixed by adjusting the nut on the double-ended threaded screw.

[0007] As a further technical solution, the upper clamp connection part includes an arc-shaped flat steel clamp, an arc-shaped support, and a support plate, wherein the arc-shaped flat steel clamp is connected to the support plate.

[0008] As a further technical solution, the inner side of the arc-shaped flat steel clamp is provided with a rubber plate to prevent scratching the busbar drum; the support plate is provided with threaded holes, and the arc-shaped flat steel clamp is connected to the support plate through a threaded rod and threaded holes.

[0009] As a further technical solution, the upper part of the arc-shaped support is used to support the GIS busbar, and its lower part is connected to the fixed plate of the middle sliding limit part.

[0010] As a further technical solution, a trapezoidal groove is provided at the bottom of the fixing plate, and the size of the trapezoidal groove is slightly smaller than the size of the slider, so as to ensure that the slider and the fixing plate are interference fit, firmly hold the slider, and prevent the slider from falling out.

[0011] As a further technical solution, the limiting blocks are configured as two, and each limiting block has a cavity. The two limiting blocks are arranged opposite to each other on both sides of the stainless steel plate, and the cavities of the two limiting blocks are opposite to each other and together form a limiting space.

[0012] As a further technical solution, the limiting block, stainless steel plate and support plate are stacked from top to bottom, and through holes are opened on the limiting block, stainless steel plate and support plate. The limiting block, stainless steel plate and support plate are fastened by passing through the through holes with a fully threaded double-ended screw and cooperating with the first nut, the first spring washer and the first flat washer.

[0013] As a further technical solution, the lower end of the fully threaded double-ended screw is fastened with a second nut, a second spring washer, a second flat washer, and the support of the lower support section.

[0014] As a further technical solution, a first adjustment space is reserved between the first nut below the support plate and the second nut above the support, and a second adjustment space is reserved below the second nut at the lowest end of the fully threaded double-ended screw.

[0015] Secondly, the present invention provides a multi-directional adjustable sliding support method, based on a multi-directional adjustable sliding support structure provided in the first aspect, the support method comprising: The upper clamp connection is wrapped around and fixed to the GIS busbar. By adjusting the second nut on the double-ended threaded rod of the lower support section, the height of the entire support structure can be adjusted and locked, completing the rigid positioning installation. When the GIS busbar deforms, the deformation is transmitted through the upper clamp connection to the fixing plate of the middle sliding limit section, driving the fixing plate to slide adaptively in the horizontal direction within the limit space formed by the limit block, and driving the slider at the bottom of the fixing plate to slide on the stainless steel plate.

[0016] One or more technical solutions of the present invention have the following beneficial effects: This invention, through the design of the central sliding limiting section (including a fixed plate, a slider, a stainless steel plate, a limiting block, and a limiting space), allows the support structure to have preset degrees of freedom in the horizontal plane (front-back and left-right directions). When the GIS busbar deforms horizontally due to thermal expansion and contraction, this deformation force can push the upper clamp connection part and the fixed plate connected thereto, causing the fixed plate to slide within the limiting space. Stress is released through the low-friction sliding pair between the slider and the stainless steel plate. This effectively compensates for horizontal deformation, preventing the accumulation of deformation stress at the connection point between the busbar shell and the rigid support, thereby significantly reducing the risk of busbar deformation and air leakage due to thermal stress.

[0017] The limiting space formed by the limiting blocks of this invention allows the fixed plate to slide adaptively while precisely limiting its sliding range. When the sliding amount exceeds the predetermined safe range (such as due to excessive deformation or accidental displacement), the limiting blocks can promptly block the fixed plate, preventing it from sliding off the support surface. This ensures that the support structure does not lose its supporting function for the busbar drum during deformation compensation, guaranteeing the structural stability and operational safety of the equipment under various operating conditions. Attached Figure Description

[0018] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0019] Figure 1 This is an overall structural diagram of the multi-directional adjustable sliding support structure of the present invention; Figure 2 This is a schematic diagram of the middle sliding limiting part of the present invention; Figure 3 This is a schematic diagram of the lower support structure of the present invention; Figure 4 This is a schematic diagram of the left and right sliding of the fixing plate of the present invention; Figure 5 This is a schematic diagram of the sliding motion of the fixing plate of the present invention. Figure 6 This is a schematic diagram showing the overall structure of the invention being adjustable vertically. Figure 7 This is a schematic diagram of the adjustment space of the present invention; Figure 8 This is a schematic diagram of the supporting plate of the present invention; Figure 9 This is a schematic diagram showing the installation of the limiting block, stainless steel plate, and supporting plate of the present invention. Figure 10 This is a schematic diagram of the slider of the present invention after it is installed on the fixing plate; Figure 11 This is a schematic diagram showing the installation of the limiting block, stainless steel plate, and supporting plate of the present invention. Among them, 1 is the lower support column, 2 is the middle sliding limit section, and 3 is the upper clamp connection section; 1-1 is a support, 1-2 is a double-ended threaded screw, 1-3 is a support plate, 2-1 is a fixing plate, 2-2 is a limit block, 2-3 is a slider, 2-4 is a fixing plate support, 2-5 is a stainless steel plate, 2-6 is the first adjustment space, 2-7 is the second adjustment space, and 2-8 is a fastening component. Detailed Implementation

[0020] It should be noted that the following detailed description is illustrative and intended to provide further explanation of the invention. Unless otherwise specified, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0021] Example 1 This embodiment provides a multi-directional adjustable sliding support structure, such as Figure 1 As shown, the overall support structure comprises three main functional modules, namely: The upper clamp connection part 3, the middle sliding limit part 2, and the lower support part 1 are connected sequentially from top to bottom. The support structure of this embodiment is used to support the busbar of the gas-insulated metal-enclosed combined electrical appliance (GIS). It can achieve precise adjustment during installation and adaptively compensate for the multi-directional deformation of the busbar caused by temperature changes and foundation settlement during equipment operation.

[0022] In this embodiment, the upper clamp connection part 3 is used to encircle and connect the GIS busbar cylinder, and it includes an arc-shaped flat steel clamp, an arc-shaped support, and a support plate.

[0023] The curved flat steel clamp is made of flat steel with a thickness of 3mm and a width of 50mm, bent and welded with threaded rods. The inner surface of the curved flat steel clamp is covered with a rubber plate to prevent scratching the shell surface when it wraps around the busbar drum. The flat steel itself has a certain degree of flexibility, which can better fit the curved contour of the busbar drum.

[0024] The support plate has threaded holes, and the arc-shaped flat steel clamp is screwed into the threaded holes through welded threaded rods to connect with the support plate. The upper part of the arc-shaped support is used to support the GIS busbar shell, and its lower part is connected to the fixing plate support 2-4 of the middle sliding limit part 2, so that the top of the entire support structure is connected to the busbar shell.

[0025] like Figure 2 As shown, the central sliding limit part 2 is the core component for achieving adaptive sliding in the horizontal direction. It includes a fixed plate 2-1, a fixed plate support 2-4 fixed to the upper part of the fixed plate, a slider 2-3 installed at the bottom of the fixed plate, a stainless steel plate 2-5 in contact with the slider, and a limit block 2-2 set on the stainless steel plate.

[0026] The bottom of the fixing plate 2-1 has two trapezoidal grooves, the size of which is slightly smaller than that of the slider 2-3. This ensures an interference fit between the slider 2-3 and the fixing plate 2-1, firmly securing the slider 2-3 and preventing it from dislodging. The slider 2-3 is made of a composite material of polytetrafluoroethylene and 0.15% molybdenum disulfide, possessing good plasticity and lubricity. The stainless steel plate 2-5 has a high-gloss surface. After the slider 2-3 is installed in the trapezoidal grooves of the fixing plate 2-1, it contacts the upper surface of the stainless steel plate 2-5.

[0027] The limiting block 2-2 is a key safety limiting component. In this embodiment, two limiting blocks 2-2 are provided. Each limiting block 2-2 is made of Q235 steel and has dimensions of 320mm in length, 115mm in width, and 55mm in height. Two through holes with a diameter of 22mm are drilled on one side, and a cavity with a length of 300mm, a width of 55mm, and a height of 30mm is machined on the other side. The two limiting blocks 2-2 are arranged opposite each other and are located on the upper left and right sides of the stainless steel plate 2-5. Their cavities face each other, together forming a limiting space with internal dimensions of 415mm in length, 300mm in width, and 30mm in height.

[0028] In this embodiment, the base plate of the fixing plate 2-1 has a length of 375mm, a width of 260mm, and a height of 20mm. Its size is smaller than the limiting space. Therefore, there is a 20mm sliding space in the length and width directions and a 10mm sliding space in the height direction between the fixing plate 2-1 and the wall of the limiting space. The limiting block is used to limit and block the fixing plate when the sliding exceeds the predetermined range.

[0029] like Figure 3 As shown, the lower support column 1 is the foundation bearing and height adjustment unit of the structure. It includes a support 1-1, a fully threaded double-ended screw 1-2, and a support plate 1-3.

[0030] Support 1-1 is a pillar made of Q235 steel, and support plate 1-3 is also made of Q235 steel, with dimensions of 535mm in length, 320mm in width, and 20mm in height. Each of the four corners has a through hole with a diameter of 24mm. The fully threaded double-ended screw 1-2 is of M20×260 specification.

[0031] In this embodiment, the limiting block 2-2, the stainless steel plate 2-3, and the supporting plate 1-3-1 are stacked from top to bottom. Since the limiting block, the stainless steel plate, and the supporting plate have through holes, the double-ended threaded screw 1-2 is passed through the corresponding through holes of the three in sequence, and then the fastening assembly 2-8 (first nut, first spring washer, and first flat washer) is used to fasten them above the limiting block 2-2.

[0032] A first nut and a first flat washer are also installed in the middle of the double-ended screw 1-2 to support the support (i.e., the first nut and the first flat washer are installed under the support plate). Then, stainless steel plates and limit blocks are stacked on top of each other in sequence. Finally, the screw is tightened with the first nut, the first spring washer, and the first flat washer to prevent the screw from loosening due to vibration during long-term operation.

[0033] The lower end of the fully threaded double-ended screw is fastened to the support of the lower support column by a second nut, a second spring washer, a second flat washer, and the support itself. A first adjustment space (40mm) is provided between the first nut below the support plate and the second nut above the support. Simultaneously, a second adjustment space (20mm) is provided below the second nut at the lowest end of the fully threaded double-ended screw 2-1. These two adjustment spaces allow for readjustment of the support height during installation and operation by loosening the corresponding nuts, followed by retightening, to compensate for changes in the vertical direction.

[0034] Example 2 This embodiment provides a multi-directional adjustable sliding support method, based on a multi-directional adjustable sliding support structure provided in Embodiment 1. The specific method is as follows: During the installation and positioning phase, firstly, the arc-shaped flat steel clamp of the upper clamp connection part 3 is wrapped around the predetermined support position of the GIS busbar. Next, the nut on the fully threaded double-ended screw of the lower support part 1 is adjusted. Specifically: like Figure 7As shown, loosen the first nut below the support plate and the second nut above the support. Use the first adjustment space (40mm space) between them to adjust the height of the entire support structure to the design elevation. Simultaneously, adjust the second adjustment space (20mm space) below the second nut at the bottom of the double-ended threaded screw 2-1 to meet the precise requirements of the actual installation height. After adjustment, tighten all relevant nuts to complete the rigid positioning and installation of the support structure, ensuring it is firmly supported under the busbar drum.

[0035] During the adaptive operation phase, when the GIS busbar deforms due to changes in ambient temperature (thermal expansion and contraction) or uneven foundation settlement during operation, this method can automatically compensate for the deformation. like Figure 4 and 5 As shown, horizontal deformation compensation (front-back and left-right): The deformation force is transmitted to the fixed plate support and the fixed plate through the upper clamp connection part 3. The deformation force drives the fixed plate to adaptively slide horizontally within the limited space formed by the two limiting blocks, which is 415mm long, 300mm wide, and 30mm high. During the sliding process, the slider at the bottom of the fixed plate slides on the smooth surface of the stainless steel plate. The low friction ensures smooth sliding, thereby effectively releasing the horizontal stress caused by deformation.

[0036] When the sliding amount reaches the limit space boundary (i.e., the reserved 20mm sliding space is used up), the limit block will block and interfere with the fixed plate to prevent it from sliding out of the support surface and losing its support function, thus ensuring the safety of the support.

[0037] like Figure 6 As shown, vertical (up and down) deformation compensation: When the busbar changes vertically due to foundation settlement, maintenance adjustments can be made. The operator loosens the relevant nuts on the lower support section 1 (i.e., the nuts involving the first and second adjustment spaces), and readjusts the height of the support structure using the reserved adjustment space according to the actual settlement. After adjustment, the nuts are tightened again to compensate for vertical deformation.

[0038] Various modifications and variations of this invention will be apparent to those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A multi-directional adjustable sliding support structure, characterized in that, include: The components connected from top to bottom are the upper clamp connection part, the middle sliding limit part, and the lower support part; The upper clamp connection part is used to wrap around and connect the GIS busbar cylinder; The middle sliding limiting part includes a fixed plate, a fixed plate support fixed to the upper part of the fixed plate, a slider installed at the bottom of the fixed plate, a stainless steel plate in contact with the slider, and a limiting block set on the stainless steel plate; multiple limiting blocks enclose a limiting space, the fixed plate is accommodated in the limiting space, the fixed plate slides adaptively in the horizontal direction in the limiting space, and the limiting block is used to limit and block the fixed plate when the sliding exceeds the predetermined range. The lower support structure includes a support, a double-ended threaded screw, and a support plate. The height of the entire structure can be adjusted and fixed by adjusting the nut on the double-ended threaded screw.

2. The multi-directional adjustable sliding support structure as described in claim 1, characterized in that, The upper clamp connection part includes an arc-shaped flat steel clamp, an arc-shaped support, and a support plate, wherein the arc-shaped flat steel clamp is connected to the support plate.

3. The multi-directional adjustable sliding support structure as described in claim 2, characterized in that, The inner side of the arc-shaped flat steel clamp is provided with a rubber plate to prevent scratching the busbar drum; the support plate is provided with threaded holes, and the arc-shaped flat steel clamp is connected to the support plate through a threaded rod and threaded holes.

4. The multi-directional adjustable sliding support structure as described in claim 2, characterized in that, The upper part of the arc-shaped support is used to support the GIS busbar, and its lower part is connected to the fixed plate support of the middle sliding limit part.

5. The multi-directional adjustable sliding support structure as described in claim 1, characterized in that, The bottom of the fixing plate has a trapezoidal groove, and the size of the trapezoidal groove is slightly smaller than the size of the slider. This is to ensure that the slider and the fixing plate are in an interference fit, firmly holding the slider in place and preventing the slider from coming out.

6. The multi-directional adjustable sliding support structure as described in claim 1, characterized in that, The limiting blocks are configured as two, and each limiting block has a cavity. The two limiting blocks are arranged opposite to each other on both sides of the stainless steel plate, and the cavities of the two limiting blocks are opposite to each other and together form a limiting space.

7. The multi-directional adjustable sliding support structure as described in claim 1, characterized in that, The limiting block, stainless steel plate, and support plate are stacked from top to bottom, and through holes are provided on the limiting block, stainless steel plate, and support plate. The limiting block, stainless steel plate, and support plate are fastened by passing through the through holes with a fully threaded double-ended screw and cooperating with a first nut, a first spring washer, and a first flat washer.

8. The multi-directional adjustable sliding support structure as described in claim 1, characterized in that, The lower end of the fully threaded double-ended screw is fastened to the support of the lower support section by a second nut, a second spring washer, a second flat washer, and the support itself.

9. The multi-directional adjustable sliding support structure as described in claim 8, characterized in that, A first adjustment space is reserved between the first nut below the support plate and the second nut above the support, and a second adjustment space is reserved below the second nut at the bottom of the full-thread double-ended screw.

10. A multi-directional adjustable sliding support method, based on the multi-directional adjustable sliding support structure according to any one of claims 1-9, characterized in that, include: The upper clamp connection is wrapped around and fixed to the GIS busbar. By adjusting the second nut on the double-ended threaded rod of the lower support section, the height of the entire support structure can be adjusted and locked, completing the rigid positioning installation. When the GIS busbar deforms, the deformation is transmitted through the upper clamp connection to the fixing plate of the middle sliding limit section, driving the fixing plate to slide adaptively in the horizontal direction within the limit space formed by the limit block, and driving the slider at the bottom of the fixing plate to slide on the stainless steel plate.

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